WO2015018374A1 - 终端选择方法、网络设备、终端及系统 - Google Patents

终端选择方法、网络设备、终端及系统 Download PDF

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Publication number
WO2015018374A1
WO2015018374A1 PCT/CN2014/084078 CN2014084078W WO2015018374A1 WO 2015018374 A1 WO2015018374 A1 WO 2015018374A1 CN 2014084078 W CN2014084078 W CN 2014084078W WO 2015018374 A1 WO2015018374 A1 WO 2015018374A1
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Prior art keywords
terminal
coordinated
cell
transmission comp
reference signal
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PCT/CN2014/084078
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English (en)
French (fr)
Inventor
高秀娟
李海朝
张盼
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华为技术有限公司
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Publication of WO2015018374A1 publication Critical patent/WO2015018374A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters

Definitions

  • Terminal selection method, network device, terminal and system This application claims priority to Chinese patent application submitted to China Patent Office on August 09, 2013, application number 201310347945.6, and the invention titled "terminal selection method, network equipment, terminal and system” The entire contents of which are incorporated herein by reference.
  • the present invention relates to the field of wireless communications, and in particular, to a terminal selection method, a network device, a terminal, and a system.
  • COMP Coordinated Multiple Points
  • the largest set of cells that can cooperate with each other can be referred to as a COMP coordinated cell set, and one coordinated cell set includes at least two cells.
  • the terminal that accepts the COMP service of the coordinated cell set is a cooperative terminal.
  • one cell in the coordinated cell is a serving cell, which is used to send data and control commands to the terminal, and the remaining cells are used as assistance cells, and only used for the coordinated cell. Send data to the terminal.
  • TD-LTE Time Division Long Term Evolution
  • all cells in a coordinated cell set estimate the uplink SRS (Sounding Reference Signal) channel information of the same terminal, and based on the estimated uplink.
  • the SRS channel information provides a COMP service to the collaborative terminal.
  • An existing method for selecting a cooperative terminal, for a terminal first determining whether the terminal can obtain an increase in the transmission rate from the COMP service; if yes, further determining that the cell currently serving the terminal is in addition to the serving cell of the terminal Whether there are other cells, and if so, the terminal is selected as the cooperative terminal.
  • the prior art has at least the following problems:
  • the COMP function needs to obtain the channel information of the user, and the availability and accuracy of the channel information directly affects the performance of the COMP.
  • the SRS period should be as short as possible, and the SINR (Signal to Interference plus Noise Ratio) of the SRS channel is high, which may cause SRS resources to be affected.
  • the method provided by the prior art selects all the terminals that can obtain the gain from the COMP service as the cooperative terminal, and provides the COMP service for all the selected cooperative terminals through the limited SRS resources, which seriously affects the system performance.
  • the embodiment of the present invention provides A terminal selection method, a network device, a terminal, and a system.
  • the technical solution is as follows:
  • the first aspect provides a terminal selection method, which is used in a network device, where the network device is used to maintain a coordinated multi-point transmission of a cell in a COMP coordinated cell set, and the method includes:
  • the terminal is a terminal currently served by a cell corresponding to the network device
  • the signal parameter includes at least a signal strength received by the terminal, a reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal.
  • the reference signal received power RSRP corresponding to the terminal includes a downlink reference signal received power RSRP corresponding to the terminal or an uplink reference signal received power RSRP corresponding to the terminal;
  • the acquiring the signal parameters of the terminal includes:
  • a signal strength received by the terminal and corresponding to the terminal At least one of a row reference signal received power RSRP or a signal quality indicator CQI of the terminal;
  • the uplink reference signal received power RSRP corresponding to the terminal is obtained by filtering.
  • the received signal strength of the terminal includes: the coordinated multi-point transmission of each cell in the COMP coordinated cell set The signal strength of the terminal and the signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal; when the signal parameter includes the signal strength received by the terminal, Detecting whether the terminal meets the selection condition according to the obtained signal parameter includes:
  • the first predetermined condition includes:
  • the ratio is not less than the first threshold
  • the difference between the sums of the signal intensities is not less than the second threshold.
  • the received signal strength of the terminal includes: the coordinated multi-point transmission COMP coordinated cell set arrives at each cell The signal strength of the terminal and the signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal; when the signal parameter includes the signal strength received by the terminal, Detecting whether the terminal meets the selection condition according to the obtained signal parameter includes:
  • the ratio is not less than the third threshold, determining that the terminal satisfies a selection condition; If the ratio is smaller than the third threshold, further determining, by the signal strength sequence, a sum of signal strengths of the first n+1 bits and the cell other than the cell in the cooperative multi-point transmission COMP cooperation cell group Whether the ratio of the sum of the signal strengths of all the cells reaching the terminal is not less than the third threshold;
  • the number of cells in the coordinated multi-point transmission COMP coordinated cell set is m, K n ⁇ m-1.
  • the reference signal received power RSRP corresponding to the terminal includes: the coordinated multi-point transmission, each cell in the COMP coordinated cell set Reference signal received power RSRP and reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set;
  • whether the terminal meets the selection condition according to the acquired signal parameter includes: detecting whether the second predetermined condition is met;
  • the second predetermined condition includes:
  • a sum of a reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and a reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set The ratio is not less than the fourth threshold;
  • the reference signal receiving power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and the reference signal receiving of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set The difference between the sum of the power RSRPs is not less than a fifth threshold; and/or, the reference signal received power RSRP of the cell corresponding to the network device and the reference of any other neighboring cell in the coordinated multi-point transmission COMP coordinated cell set The difference between the signal received power RSRP is not greater than the sixth threshold.
  • the signal parameter when the signal parameter includes a signal quality indicator CQI of the terminal, the signal parameter detects whether the terminal meets the selection condition, and includes:
  • the third predetermined condition includes: The signal quality indicator CQI of the terminal is not less than a seventh threshold.
  • the first possible implementation of the first aspect, the second possible implementation of the first aspect, the third possible implementation of the first aspect, the fourth possible implementation of the first aspect, or the A fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, after the terminal is added to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device, Includes:
  • the predetermined strategy includes:
  • the sum of the reference signal received power RSRP of each of the cells other than the serving cell of the terminal in the coordinated multi-point transmission COMP coordinated cell set is more cooperative with the foregoing
  • the ratio of the sum of the reference signal received powers RSRP of all cells except the cells in the point-to-point transmission COMP coordinated cell is sorted in descending order; or, according to the respective terminals, the coordinated multi-point transmission COMP coordinated cell is expected to be accepted. After the coordinated multi-point transmission service of each cell is concentrated, the signal and interference and noise ratio SINR are sorted in descending order.
  • the adding the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device also includes:
  • the determining, by using the first N terminals in the terminal sequence, a terminal that accepts a coordinated multi-point transmission COMP service also includes:
  • the determining, by the first N terminals in the terminal sequence, the terminal that accepts the coordinated multi-point transmission COMP service also includes:
  • the detection result is an unreliable sounding reference signal.
  • the terminal corresponding to the SRS channel is collectively deleted from the cooperative multi-point transmission COMP cooperative terminal, or zero-processing is performed on the sounding reference signal SRS channel whose detection result is unreliable.
  • the second aspect provides a terminal selection method, which is used in a terminal, where the method includes: acquiring a signal parameter of the terminal;
  • the cell corresponding to the network device is a cell in a coordinated multi-point transmission COMP coordinated cell set, and is a serving cell of the terminal.
  • the signal parameter includes a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal. At least one.
  • the received signal strength of the terminal includes: the coordinated multi-point transmission of each cell in the COMP coordinated cell set The signal strength of the terminal and the signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal.
  • the downlink reference signal received power RSRP corresponding to the terminal includes: the coordinated multi-point transmission COMP coordinated cell set The downlink reference signal received power RSRP of the cell and the downlink reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set.
  • a network device configured to support a coordinated multi-point transmission of a cell in a COMP coordinated cell set, where the network device includes: a first parameter obtaining module, configured to acquire a signal parameter of the terminal, where the terminal is a terminal currently served by the cell corresponding to the network device;
  • a detecting module configured to detect, according to the signal parameter acquired by the first parameter acquiring module, whether the terminal meets a selection condition
  • a adding module configured to add the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device, if the detection result of the detection module is that the terminal satisfies the selection condition.
  • the first parameter acquiring module includes: a receiving unit, configured to receive, by the terminal, a signal strength received by the terminal, and a downlink corresponding to the terminal At least one of a reference signal received power RSRP or a signal quality indicator CQI of the terminal;
  • An acquiring unit configured to acquire, by using filtering, an uplink reference signal receiving power corresponding to the terminal
  • the signal parameter includes at least one of a signal strength received by the terminal, a reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal;
  • the power RSRP includes a downlink reference signal received power RSRP corresponding to the terminal or an uplink reference signal received power RSRP corresponding to the terminal.
  • the detecting module includes:
  • a first detecting unit configured to detect whether the first predetermined condition is established when the signal parameter includes a signal strength received by the terminal
  • a first determining unit configured to determine that the terminal meets the selection condition if the detection result of the first detecting unit is that the first predetermined condition is met
  • the first predetermined condition includes:
  • the ratio is not less than the first threshold
  • the sum of the signal strengths of the respective cells in the coordinated multi-point transmission COMP coordinated cell group reaching the terminal and all the cells except the cell in the coordinated multi-point transmission COMP coordinated cell group arrive at the terminal
  • the difference between the sum of the signal strengths is not less than the second threshold;
  • the signal strength received by the terminal includes: a signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell group reaching the terminal, and all but the cell in the coordinated multi-point transmission COMP coordinated cell set. The signal strength of the cell arriving at the terminal.
  • the detecting module includes:
  • a sorting unit configured to: when the signal parameter includes a signal strength received by the terminal, perform signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal according to a strong to weak sequence Sort, obtain a sequence of signal strengths;
  • a determining unit configured to determine a sum of signal strengths of the first n bits in the signal strength sequence and a signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell group to reach the terminal Whether the ratio is not less than the third threshold;
  • a second determining unit configured to determine that the terminal meets the selection condition if the ratio is not less than the third threshold
  • the determining unit is configured to further determine, when the ratio is smaller than the third threshold, a sum of signal strengths of the first n+1 bits in the signal strength sequence and the cooperation of the cooperative multipoint transmission COMP Whether the ratio of the sum of the signal strengths of all the cells except the cell in the cell set to the terminal is not less than the third threshold;
  • the number of cells in the coordinated multi-point transmission COMP coordinated cell set is m, K n ⁇ m-1; wherein the signal strength received by the terminal includes: the coordinated multi-point transmission COMP coordinated cell set arrives at each cell The signal strength of the terminal and the signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal.
  • the detecting module includes:
  • a second detecting unit configured to detect whether a second predetermined condition is established when the signal parameter includes a reference signal receiving power RSRP corresponding to the terminal;
  • a third determining unit configured to determine that the terminal meets the selection condition if the detection result of the second detecting unit is that the second predetermined condition is established
  • the second predetermined condition includes:
  • a sum of a reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and a reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set The ratio is not less than the fourth threshold; And/or, the reference signal receiving power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and the reference signal receiving of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set
  • the difference between the sum of the power RSRPs is not less than a fifth threshold; and/or, the reference signal received power RSRP of the cell corresponding to the network device and the reference of any other neighboring cell in the coordinated multi-point transmission COMP coordinated cell set
  • the difference between the signal receiving power RSRP is not greater than the sixth threshold;
  • the reference signal received power RSRP corresponding to the terminal includes: a reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set, and the cell in the coordinated multi-point transmission COMP coordinated cell set The reference signals of all the cells outside receive the power RSRP.
  • the detecting module includes:
  • a third detecting unit configured to detect whether a third predetermined condition is established when the signal parameter includes a signal quality indicator CQI of the terminal;
  • a fourth determining unit configured to determine that the terminal meets the selection condition if the detection result of the third detecting unit is that the third predetermined condition is met
  • the third predetermined condition includes:
  • the signal quality indicator CQI of the terminal is not less than a seventh threshold.
  • the network device further includes:
  • a sorting module configured to sort each terminal in the coordinated multi-point transmission COMP cooperative terminal set according to a predetermined policy, to obtain a terminal sequence
  • a determining module configured to determine, by the first N terminals in the terminal sequence, a terminal that preferentially accepts a coordinated multi-point transmission COMP service, where N is a predetermined positive integer;
  • the predetermined strategy includes:
  • a sum of reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set corresponding to each cell except the cell in the coordinated multi-point transmission COMP coordinated cell set corresponding to each terminal Sorting the ratio of the sum of the reference signal received powers RSRP from large to small; Or, according to the respective terminals, the sum of the reference signal received power RSRP of each of the cells other than the serving cell of the terminal in the coordinated multi-point transmission COMP coordinated cell set is more cooperative with the foregoing
  • the ratio of the sum of the reference signal received powers RSRP of all cells except the cells in the point-to-point transmission COMP coordinated cell is sorted in descending order; or, according to the respective terminals, the coordinated multi-point transmission COMP coordinated cell is expected to be accepted. After the coordinated multi-point transmission service of each cell is concentrated, the signal and interference and noise ratio SINR are sorted in descending order.
  • the network device further includes:
  • the network device further includes:
  • a resource allocation module configured to allocate a sounding reference signal SRS resource to the N terminals determined by the determining module
  • a first deleting module configured to delete, by the coordinated multi-point transmission COMP cooperative terminal, the terminal that fails to allocate the sounding reference signal SRS resource.
  • the network device further includes:
  • a channel detecting module configured to detect whether the sounding reference signal SRS channel of each terminal in the coordinated multi-point transmission COMP cooperative terminal is reliable
  • a second deleting module configured to remove, from the cooperative multipoint transmission COMP cooperative terminal, the terminal corresponding to the SRS channel, where the detection result is unreliable
  • a zero-adding module is used to add zero processing to the sounding reference signal SRS channel whose detection result is unreliable.
  • a fourth aspect provides a terminal, where the terminal includes:
  • a second parameter obtaining module configured to acquire a signal parameter of the terminal
  • a parameter sending module configured to send the signal parameter to a network device, so that the network device adds the terminal to a cell corresponding to the network device after detecting that the terminal meets a selection condition according to the signal parameter Collaborative multipoint transmission of COMP collaborative terminal sets;
  • the cell corresponding to the network device is a coordinated multi-point transmission of a cell in a COMP coordinated cell set, and is a serving cell of the terminal.
  • the signal parameter includes a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal. At least one.
  • the signal strength received by the terminal includes: the coordinated multi-point transmission of each cell in the COMP coordinated cell set The signal strength of the terminal and the signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal.
  • the downlink reference signal received power RSRP corresponding to the terminal includes: the coordinated multi-point transmission COMP coordinated cell set The downlink reference signal received power RSRP of the cell and the downlink reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set.
  • a system for selecting a terminal comprising:
  • the beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:
  • FIG. 1 is a flowchart of a method for selecting a terminal according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for selecting a terminal according to another embodiment of the present invention
  • 3 is a flowchart of a method for selecting a terminal according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for selecting a terminal according to another embodiment of the present invention
  • FIG. 6 is a device configuration diagram of a network device according to another embodiment of the present invention.
  • FIG. 7 is a device configuration diagram of a network device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • FIG. 9 is a device configuration diagram of a terminal according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of a device of a terminal according to another embodiment of the present invention.
  • FIG. 11 is a device configuration diagram of a terminal according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a device according to another embodiment of the present invention.
  • FIG. 13 is a system configuration diagram of a terminal selection system according to another embodiment of the present invention.
  • the largest set of cells that can cooperate with each other is called a coordinated multi-point transmission COMP coordinated cell set, wherein one coordinated cell set includes at least two cells.
  • the terminal that accepts the COMP service of the coordinated cell set is a cooperative terminal.
  • one cell in the coordinated cell is a serving cell, which is used to send data and control commands to the terminal, and the remaining cells are used as assistance cells, and only used for the coordinated cell. Send data to the terminal.
  • FIG. 1 a flow chart of a method for selecting a terminal provided by an embodiment of the present invention is shown.
  • the terminal selection method may be applied to a network device, where the network device is used to maintain a coordinated multi-point transmission of a cell in a COMP coordinated cell set.
  • the terminal selection method may include: Step 102: Acquire a signal parameter of the terminal, where the terminal is a terminal currently served by a cell corresponding to the network device;
  • Step 104 Detect whether the terminal meets the selection condition according to the obtained signal parameter.
  • Step 106 If the detection result is that the terminal meets the selection condition, add the terminal to the coordinated multi-point transmission COMP collaboration of the cell corresponding to the network device. Terminal set.
  • the terminal selection method acquires a signal of the terminal.
  • the parameter determines whether the terminal satisfies the selection condition according to the signal parameter, and adds the terminal that meets the selection condition to the coordinated multi-point transmission COMP cooperative terminal set, and solves the problem that all the devices can be obtained from the COMP in the case that the SRS resource is limited in the prior art.
  • Terminals that gain gain in service are selected as terminals that accept COMP services, which seriously affects system performance and achieves the goal of improving system performance.
  • FIG. 2 is a flowchart of a method for selecting a terminal according to another embodiment of the present invention.
  • the terminal selection method may be applied to a network device, where the network device may be implemented as a base station or a part of a base station, where the network device is configured to correspondingly maintain a coordinated multi-point transmission of a cell in a COMP coordinated cell set.
  • the terminal selection method may include:
  • Step 202 The network device acquires a signal parameter of the terminal, where the terminal is a terminal currently served by the cell corresponding to the network device;
  • the signal parameter includes at least one of a signal strength received by the terminal, an RSRP (Reference Signal Received Power) corresponding to the terminal, or a CQI (Channel Quality Indication) of the terminal.
  • the reference signal received power RSRP corresponding to the terminal includes the downlink reference signal received power RSRP corresponding to the terminal or the uplink reference signal received power RSRP corresponding to the terminal;
  • the network device may receive, by the terminal, at least one of a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal.
  • the network device can also obtain the uplink reference signal receiving power RSRP corresponding to the terminal.
  • the terminal may directly measure the downlink reference signal received power RSRP of all cells that can receive the signal and send the signal to the network. device.
  • the network device may obtain the terminal by performing long-term filtering on the SRS channel of the terminal or by uplink demodulation pilot filtering of the terminal.
  • the uplink RSRP of the current cell corresponding to the network device, and the network device further obtains uplinks of the other cell corresponding to the cell from other cells (including the intra-collection cell and the co-location set cell) that the terminal can receive the signal. RSRP.
  • the network device may obtain the uplink RSRP of the current serving cell (that is, the current corresponding cell of the network device) by using the long-term filtering of the SRS channel of the terminal or by uplink demodulation pilot filtering of the terminal, and receiving
  • the terminal estimates the uplink RSRP of the other cell that can receive the signal to the uplink RSRP of the current serving cell.
  • Step 204 The network device detects, according to the acquired signal parameter, whether the terminal meets the selection condition.
  • the network device can detect whether the terminal satisfies the selection condition by the cooperative in-set interference and the cooperative out-of-band interference ratio.
  • the signal strength received by the terminal includes: the signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell group reaching the terminal, and all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set arrive at the The signal strength of the terminal; when the signal parameter includes the signal strength received by the terminal, the network device detects whether the first predetermined condition is met; if the first predetermined condition is met, determining that the terminal meets the selection condition; wherein, the first The booking conditions include:
  • the ratio of the sum of the signal strengths of the cells in the coordinated multi-point transmission COMP coordinated cell to the terminal and the sum of the signal strengths of all the cells except the cell in the coordinated multi-point transmission COMP coordinated cell group is not less than a first threshold; and/or, the sum of the signal strengths of the cells in the coordinated multi-point transmission COMP coordinated cell reaching the terminal and all cells except the cell in the coordinated multi-point transmission COMP coordinated cell group arrive at the terminal
  • the difference between the sum of the signal strengths is not less than the second threshold.
  • the network device may also detect whether the terminal satisfies the selection condition by the cooperative intra-cell interference and the coordinated out-of-cell interference ratio. Specifically, when the signal parameter includes the signal strength received by the terminal, the network device sorts the signal strengths of the cells in the coordinated multi-point transmission COMP coordinated cell to the terminal according to the order from strong to weak, and obtains a signal.
  • the ratio of the sum of the signal strengths of the first n bits in the signal strength sequence to the sum of the signal strengths of all the cells except the cell in the coordinated multi-point transmission COMP coordinated cell group is not less than a third threshold; if the ratio is not less than the third threshold, determining that the terminal satisfies the selection condition; if the ratio is less than the third threshold, further determining the first n+1 bits in the signal strength sequence Whether the ratio of the sum of the signal strengths and the sum of the signal strengths of all the ds and the regions other than the cells in the coordinated multi-point transmission COMP coordinated cell set to the terminal is not less than the third threshold; wherein, the cooperation is large
  • the number of cells in the point transmission COMP coordinated cell set is m, 1 n ml.
  • the network device first selects one of the strongest signals from the coordinated cell in the coordinated cell set to the user, for example, selecting the downlink RSRP or the uplink SRS channel signal of each cell in the coordinated cell set reported by the user.
  • the network device calculates whether the proportion of the strongest signal in the total signal received by the terminal is greater than a predetermined value. If so, the terminal is satisfied with the selection condition.
  • the network device selects a second strong signal from the coordinated cell in the coordinated cell set to the user's signal, and calculates whether the proportion of the strongest signal and the second strong signal in the total signal received by the terminal is greater than the predetermined The value, and so on, until all cells in the coordinated cell set are calculated.
  • the network device may also detect whether the terminal meets the selection condition by using RSRP corresponding to the terminal.
  • the reference signal received power RSRP corresponding to the terminal includes: a reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set, and all except the cell in the coordinated multi-point transmission COMP coordinated cell set.
  • the reference signal of the cell receives the power RSRP; when the signal parameter includes the reference signal received power RSRP corresponding to the terminal, the network device detects whether the second predetermined condition is met; if the second predetermined condition is met, determining that the terminal satisfies the selection condition;
  • the second predetermined condition comprises:
  • the ratio of the sum of the reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set to the sum of the reference signal received powers RSRP of all the cells except the cell in the coordinated multi-point transmission COMP coordinated cell set is not And less than a fourth threshold; and/or, the sum of reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and all cells except the cell in the cooperative multi-point transmission COMP cooperative cell set
  • the difference between the sum of the reference signal received powers RSRP is not less than a fifth threshold; and/or the reference signal received power RSRP of the cell corresponding to the network device and any other neighboring cells in the coordinated multi-point transmission COMP coordinated cell set
  • the difference between the reference signal received power RSRP is not greater than the sixth threshold.
  • the network device may also detect whether the terminal meets the selection condition by using the CQI corresponding to the terminal. Specifically, when the signal parameter includes the signal quality indicator CQI of the terminal, the network device detects whether the third predetermined condition is met; if the third predetermined condition is met, determining the end End satisfying the selection condition; wherein the third predetermined condition comprises: a signal quality indicator of the terminal
  • the CQI is not less than the seventh threshold.
  • Step 206 If the detection result is that the terminal meets the selection condition, the network device adds the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device;
  • the terminal is added to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device, to obtain an initial set of coordinated terminals.
  • the network device may also determine that each terminal in the initial coordinated terminal set accepts the COMP service.
  • the priority is to provide COMP services only for a predetermined number of terminals in the initial set of coordinated terminals.
  • the network device may first sort the terminals of the coordinated multi-point transmission COMP cooperative terminal according to a predetermined policy to obtain a terminal sequence; and determine the first N terminals in the terminal sequence to accept the coordinated multi-point transmission COMP service.
  • Terminal, N is a predetermined positive integer; wherein the predetermined policy includes:
  • the ratio of the sum of the power RSRPs is sorted in descending order; or, according to the reference signals received by the respective terminals in the coordinated multi-point transmission COMP coordinated cell set except for the serving cell of the terminal And summing the ratio of the sum of the power RSRPs to the sum of the reference signal received powers RSRP of all the cells except the cell in the coordinated multi-point transmission COMP coordinated cell set; or, according to the expected acceptance of each terminal
  • the signal and interference and noise ratio SINR are sequentially updated in descending order.
  • Step 208 The network device acquires a coordinated multi-point transmission COMP cooperative terminal set of the coordinated multi-point transmission COMP coordinated cell set other than the cell corresponding to the network device, and the network device acquires the COMP cooperative terminal of other cells in the COMP coordinated cell set. Set to cooperate to send data to terminals currently served by other cells.
  • Step 210 The network device updates the coordinated multi-point transmission COMP cooperative terminal of the corresponding cell.
  • the network device can also update the COMP collaborative terminal set. Specifically, the network device may allocate the sounding reference signal SRS resource to the determined N terminals; and delete the terminal that fails to allocate the sounding reference signal SRS resource from the coordinated multi-point transmission COMP cooperative terminal.
  • the network device may detect whether the sounding reference signal SRS channel of each terminal in the COMP cooperative terminal set is reliable; and the terminal corresponding to the unreliable sounding reference signal SRS channel is deleted from the coordinated multipoint transmission COMP cooperative terminal. .
  • the network device may not delete the terminal corresponding to the unreliable sounding reference signal SRS channel from the coordinated multi-point transmission COMP cooperative terminal, but only the sounding reference signal SRS channel whose detection result is unreliable. Do zero processing.
  • the terminal selection method provided by the embodiment of the present invention acquires a signal parameter of the terminal, detects whether the terminal satisfies the selection condition according to the signal parameter, and adds the terminal that meets the selection condition to the coordinated multi-point transmission COMP cooperative terminal set.
  • the invention solves the problem that in the prior art, all the terminals that can obtain the gain from the COMP service are selected as the terminals that accept the COMP service when the SRS resources are limited, thereby seriously affecting the performance of the system and achieving the purpose of improving the system performance;
  • the terminal selection method provided by the embodiment of the present invention determines the priority of each terminal in the initial coordinated terminal set to accept the COMP service, so as to provide COMP service only for a predetermined number of terminals in the initial coordinated terminal set, and reduce the COMP service.
  • the number of the terminals is used to further improve the system performance, and the system complexity is simplified.
  • the terminal selection method provided by the embodiment of the present invention further improves the system performance by updating the terminals in the initial coordinated terminal set.
  • FIG. 3 a flow chart of a method for selecting a terminal provided by an embodiment of the present invention is shown.
  • the terminal selection method can be applied to the terminal.
  • the terminal selection method may include: Step 302: Acquire a signal parameter of the terminal;
  • Step 304 Send the signal parameter to the network device, so that the network device adds the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device after detecting that the terminal meets the selection condition according to the signal parameter;
  • the cell corresponding to the network device is a coordinated multi-point transmission of one cell in the COMP coordinated cell set, and is a serving cell of the terminal.
  • the terminal selection method provided by the embodiment of the present invention obtains the signal parameter of the terminal and sends it to the network device, so that the network device can detect whether the terminal is added to the cell corresponding to the network device according to the signal parameter.
  • the multi-point transmission COMP cooperative terminal set solves the problem that in the prior art, all the terminals that can obtain the gain from the COMP service are selected as the terminals that accept the COMP service when the SRS resources are limited, thereby seriously affecting the system performance. Achieve the purpose of improving system performance.
  • FIG. 3 For a more preferred solution of the terminal selection method shown in FIG. 3, please refer to FIG.
  • the terminal selection method can be applied to a terminal, such as a mobile communication terminal.
  • the terminal selection method may include: Step 402: The terminal acquires a signal parameter of the terminal;
  • Step 404 The terminal sends the signal parameter to the network device, so that the network device adds the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device after detecting that the terminal meets the selection condition according to the signal parameter. ;
  • the cell corresponding to the network device is a coordinated multi-point transmission cell in a COMP coordinated cell set, and is a serving cell of the terminal.
  • the signal parameter includes at least one of a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal.
  • the signal strength received by the terminal includes: a signal strength of the coordinated multi-point transmission of each cell in the COMP coordinated cell group to the terminal, and a signal of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell group reaching the terminal strength.
  • the downlink reference signal received power RSRP corresponding to the terminal includes: a downlink reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set, and all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set
  • the downlink reference signal receives power RSRP.
  • the terminal selection method obtained by the embodiment of the present invention obtains the signal parameter of the terminal and sends it to the network device, so that the network device can detect whether the terminal is added to the cell corresponding to the network device according to the signal parameter.
  • the multi-point transmission COMP cooperative terminal set solves the problem that in the prior art, all the terminals that can obtain the gain from the COMP service are selected as the terminals that accept the COMP service when the SRS resources are limited, thereby seriously affecting the system performance. Achieve the purpose of improving system performance.
  • FIG. 5 shows a device configuration diagram of a network device according to an embodiment of the present invention.
  • the network device can be implemented as part of a base station or base station.
  • the network device is configured to support a coordinated multi-point transmission of a cell in a COMP coordinated cell set, where the network device may include: a first parameter obtaining module 501, configured to acquire a signal parameter of the terminal, where the terminal is a network device corresponding to the network device The terminal currently served by the cell;
  • the detecting module 502 is configured to detect, according to the signal parameter acquired by the first parameter acquiring module 502, whether the terminal meets a selection condition;
  • the adding module 503 is configured to add the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device, if the detection result of the detecting module 502 is that the terminal meets the selection condition.
  • the network device detects the signal condition of the terminal, detects whether the terminal meets the selection condition according to the signal parameter, and adds the terminal that meets the selection condition to the coordinated multi-point transmission COMP cooperative terminal set.
  • the invention solves the problem that all the terminals that can obtain the gain from the COMP service are selected as the terminals that accept the COMP service in the case where the SRS resources are limited, thereby seriously affecting the performance of the system and achieving the purpose of improving the system performance.
  • FIG. 6 shows a device configuration diagram of a network device according to another embodiment of the present invention.
  • the network device can be implemented as part of a base station or base station.
  • the network device is configured to support a coordinated multi-point transmission of a cell in the COMP coordinated cell set, and the network device may include:
  • the first parameter obtaining module 601 is configured to acquire a signal parameter of the terminal, where the terminal is a terminal currently served by the cell corresponding to the network device;
  • the detecting module 602 is configured to detect, according to the signal parameter acquired by the first parameter acquiring module 602, whether the terminal meets a selection condition;
  • the adding module 603 is configured to add the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device, if the detection result of the detecting module 602 is that the terminal satisfies the selection condition.
  • the first parameter obtaining module 601 includes:
  • the receiving unit 601a is configured to receive, by the terminal, a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality of the terminal At least one of a quantity indicator CQI;
  • the obtaining unit 601b is configured to acquire an uplink reference signal received power RSRP corresponding to the terminal;
  • the signal parameter includes at least one of a signal strength received by the terminal, a reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal;
  • the power RSRP includes a downlink reference signal received power RSRP corresponding to the terminal or an uplink reference signal received power RSRP corresponding to the terminal.
  • the detecting module 602 includes:
  • the first detecting unit 602a is configured to detect, when the signal parameter includes the signal strength received by the terminal, whether the first predetermined condition is met;
  • the first determining unit 602b is configured to determine that the terminal meets the selection condition if the detection result of the first detecting unit 602a is that the first predetermined condition is met;
  • the first predetermined condition includes:
  • the ratio is not less than the first threshold
  • the difference between the sum of the signal strengths is not less than the second threshold
  • the signal strength received by the terminal includes: a signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell group reaching the terminal, and all but the cell in the coordinated multi-point transmission COMP coordinated cell set. The signal strength of the cell arriving at the terminal.
  • the detecting module 602 includes:
  • the sorting unit 602c is configured to, when the signal parameter includes the signal strength received by the terminal, transmit the signal strength of each cell in the coordinated multi-point transmission COMP to the terminal according to the order from strong to weak. Sorting to obtain a sequence of signal strengths;
  • the determining unit 602d is configured to determine a sum of signal strengths of the first n bits in the signal strength sequence and a signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell group to reach the terminal Whether the ratio of the sum is not less than the third threshold;
  • a second determining unit 602e configured to determine, if the ratio is not less than the third threshold Said terminal satisfies the selection condition
  • the determining unit 602d is configured to further determine, when the ratio is smaller than the third threshold, a sum of signal strengths of the first n+1 bits in the signal strength sequence and the cooperative multipoint transmission COMP Whether the ratio of the sum of the signal strengths of all the cells outside the cell in the coordinated cell to the terminal is not less than the third threshold;
  • the number of cells in the coordinated multi-point transmission COMP coordinated cell set is m, K n ⁇ m-1; wherein the signal strength received by the terminal includes: the coordinated multi-point transmission COMP coordinated cell set arrives at each cell The signal strength of the terminal and the signal strength of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal.
  • the detecting module 602 includes:
  • the second detecting unit 602f is configured to detect, when the signal parameter includes the reference signal receiving power RSRP corresponding to the terminal, whether the second predetermined condition is met;
  • the third determining unit 602g is configured to determine that the terminal satisfies the selection condition if the detection result of the second detecting unit 602f is that the second predetermined condition is met;
  • the second predetermined condition includes:
  • a sum of a reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and a reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set The ratio is not less than the fourth threshold;
  • the reference signal receiving power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and the reference signal receiving of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set The difference between the sum of the power RSRPs is not less than a fifth threshold; and/or, the reference signal received power RSRP of the cell corresponding to the network device and the reference of any other neighboring cell in the coordinated multi-point transmission COMP coordinated cell set The difference between the signal receiving power RSRP is not greater than the sixth threshold;
  • the reference signal received power RSRP corresponding to the terminal includes: a reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set, and the cell in the coordinated multi-point transmission COMP coordinated cell set The reference signals of all the cells outside receive the power RSRP.
  • the detecting module 602 includes:
  • the third detecting unit 602h is configured to detect, when the signal parameter includes the signal quality indicator CQI of the terminal, whether the third predetermined condition is met;
  • the fourth determining unit 602i is configured to determine that the terminal meets the selection condition if the detection result of the third detecting unit 602h is that the third predetermined condition is met;
  • the third predetermined condition includes:
  • the signal quality indicator CQI of the terminal is not less than a seventh threshold.
  • the network device further includes:
  • a sorting module 604 configured to sort each terminal in the coordinated multi-point transmission COMP collaboration terminal according to a predetermined policy, to obtain a terminal sequence
  • the determining module 605 is configured to determine, by the first N terminals in the terminal sequence, a terminal that preferentially accepts the coordinated multi-point transmission COMP service, where N is a predetermined positive integer;
  • the predetermined strategy includes:
  • the sum of the reference signal received power RSRP of each of the cells other than the serving cell of the terminal in the coordinated multi-point transmission COMP coordinated cell set is more cooperative with the foregoing
  • the ratio of the sum of the reference signal received powers RSRP of all cells except the cells in the point-to-point transmission COMP coordinated cell is sorted in descending order; or, according to the respective terminals, the coordinated multi-point transmission COMP coordinated cell is expected to be accepted. After the coordinated multi-point transmission service of each cell is concentrated, the signal and interference and noise ratio SINR are sorted in descending order.
  • the network device further includes:
  • the terminal set obtaining module 606 is configured to acquire a coordinated multi-point transmission COMP cooperative terminal set of the cell other than the cell corresponding to the network device in the coordinated multi-point transmission COMP coordinated cell set.
  • the network device further includes:
  • a resource allocation module 607 configured to allocate a detection reference signal SRS resource to the N terminals determined by the determining module 605;
  • the first deleting module 608 is configured to delete the terminal that fails to allocate the sounding reference signal SRS resource from the coordinated multi-point transmission COMP cooperative terminal.
  • the network device further includes:
  • the channel detecting module 609 is configured to detect whether the sounding reference signal SRS channel of each terminal in the coordinated multi-point transmission COMP cooperative terminal set is reliable;
  • a second deleting module 610 configured to remove the terminal corresponding to the SRS channel, where the detection result is unreliable, from the coordinated multi-point transmission COMP cooperative terminal;
  • the zero-adding module 611 is configured to perform zero-adding on the SRS channel of the sounding reference signal whose detection result is unreliable.
  • the network device acquires a signal parameter of the terminal, detects whether the terminal satisfies the selection condition according to the signal parameter, and adds the terminal that meets the selection condition to the coordinated multi-point transmission COMP cooperative terminal set to solve the problem.
  • the network device provided by the embodiment of the present invention determines the priority of each terminal in the initial coordinated terminal set to accept the COMP service, so as to provide the COMP service only for the predetermined number of terminals in the initial coordinated terminal set, and reduce the terminal that accepts the COMP service.
  • the number of the system can be used to further improve the system performance, and the system complexity is simplified.
  • the network device provided by the embodiment of the present invention achieves the purpose of further improving system performance by updating the terminal in the initial coordinated terminal set. Referring to FIG.
  • the network device can be implemented as part of a base station or base station.
  • the network device is configured to correspond to a cell in a coordinated multi-point transmission COMP coordinated cell set, and the network device may include: a processor 701, a receiver 702, and a transmitter 703;
  • the processor 701 is configured to acquire, by using the receiver 702 and the transmitter 703, a signal parameter of the terminal, where the terminal is a terminal currently served by the cell corresponding to the network device;
  • the processor 701 is configured to detect, according to the obtained signal parameter, whether the terminal meets a selection condition
  • the processor 701 is configured to add, if the terminal meets the selection condition, the terminal to a coordinated multi-point transmission COMP cooperative terminal set of a cell corresponding to the network device.
  • the network device detects the signal condition of the terminal, detects whether the terminal meets the selection condition according to the signal parameter, and adds the terminal that meets the selection condition to the coordinated multi-point transmission COMP cooperative terminal set.
  • the network device can be implemented as part of a base station or base station.
  • the network device is configured to support a coordinated multi-point transmission of a cell in a COMP coordinated cell set, and the network device may include: a processor 801, a receiver 802, and a transmitter 803;
  • the processor 801 is configured to control the receiver 802 and the transmitter 803 to acquire a signal parameter of the terminal, where the terminal is a terminal currently served by the cell corresponding to the network device;
  • the processor 801 is configured to detect, according to the obtained signal parameter, whether the terminal meets a selection condition
  • the processor 801 is configured to: if the detection result is that the terminal meets the selection condition, add the terminal to the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device.
  • the processor 801 is configured to control the receiver 802 and the transmitter 803 to receive, by the terminal, a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality indicator of the terminal. At least one of CQI;
  • the processor 801 is configured to acquire an uplink reference signal received power RSRP corresponding to the terminal, where the signal parameter includes a signal strength received by the terminal, a reference signal received power RSRP corresponding to the terminal, or the terminal At least one of the signal quality indicator CQI; the reference signal received power RSRP corresponding to the terminal includes a downlink reference signal received power RSRP corresponding to the terminal or an uplink reference signal received power RSRP corresponding to the terminal.
  • the processor 801 is configured to: when the signal parameter includes the signal strength received by the terminal, detect whether the first predetermined condition is met; if the first predetermined condition is met, determine that the terminal meets the selection condition;
  • the first predetermined conditions include:
  • the ratio is not less than the first threshold
  • the coordinated multi-point transmission of the sum of the signal strengths of the cells in the COMP coordinated cell set to the terminal and the cells in the coordinated multi-point transmission COMP cooperation cell group The difference between the sum of the signal strengths of all the cells reaching the terminal is not less than the second threshold;
  • the signal strength received by the terminal includes: a signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell group reaching the terminal, and all but the cell in the coordinated multi-point transmission COMP coordinated cell set. The signal strength of the cell arriving at the terminal.
  • the processor 801 is configured to, when the signal parameter includes the signal strength received by the terminal, transmit the signal strength of each cell in the coordinated multi-point transmission COMP to the terminal according to the order from strong to weak. Performing sorting to obtain a signal strength sequence; determining a sum of signal strengths of the first n bits in the signal strength sequence and signals of all cells except the cell in the coordinated multipoint transmission COMP coordinated cell group reaching the terminal Whether the ratio of the sum of the intensities is not less than the third threshold; if the ratio is not less than the third threshold, determining that the terminal satisfies the selection condition; if the ratio is less than the third threshold, further determining Whether the ratio of the sum of the signal strengths of the first n+1 bits in the sequence of signal strengths to the sum of the signal strengths of all the cells other than the cells in the coordinated multipoint transmission COMP cooperating cell group arrives at the terminal is not Less than the third threshold; the number of cells in the coordinated multi-point transmission COMP coordinated cell set is m, K n ⁇ ml;
  • the signal strength received by the terminal includes: a signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell set reaching the terminal, and all but the cell in the coordinated multi-point transmission COMP coordinated cell set. The signal strength of the cell arriving at the terminal.
  • the processor 801 is configured to: when the signal parameter includes the reference signal received power RSRP corresponding to the terminal, detecting whether the second predetermined condition is met; if the detection result is that the second predetermined condition is met, determining that the terminal is satisfied Selecting conditions; the second predetermined condition includes:
  • a sum of a reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and a reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set The ratio is not less than the fourth threshold;
  • the reference signal receiving power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set and the reference signal receiving of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set The difference between the sum of the power RSRPs is not less than a fifth threshold; and/or, the reference signal received power RSRP of the cell corresponding to the network device and the reference of any other neighboring cell in the coordinated multi-point transmission COMP coordinated cell set The difference between the signal receiving power RSRP is not greater than the sixth threshold;
  • the reference signal received power RSRP corresponding to the terminal includes: the coordinated multipoint And transmitting reference signal received power RSRP of each cell in the COMP coordinated cell set and reference signal received power RSRP of all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set.
  • the processor 801 is configured to: when the signal parameter includes the signal quality indicator CQI of the terminal, detect whether the third predetermined condition is met; if the third predetermined condition is met, determine that the terminal meets the selection condition;
  • the third predetermined condition includes:
  • the signal quality indicator CQI of the terminal is not less than a seventh threshold.
  • the processor 801 is further configured to: sort, according to a predetermined policy, each terminal in the coordinated multi-point transmission COMP cooperative terminal set to obtain a terminal sequence; and determine, in the terminal sequence, the first N terminals to preferentially receive coordinated multi-point transmission
  • N is a predetermined positive integer; the predetermined policy includes:
  • the sum of the reference signal received power RSRP of each of the cells other than the serving cell of the terminal in the coordinated multi-point transmission COMP coordinated cell set is more cooperative with the foregoing
  • the ratio of the sum of the reference signal received powers RSRP of all cells except the cells in the point-to-point transmission COMP coordinated cell is sorted in descending order; or, according to the respective terminals, the coordinated multi-point transmission COMP coordinated cell is expected to be accepted. After the coordinated multi-point transmission service of each cell is concentrated, the signal and interference and noise ratio SINR are sorted in descending order.
  • the processor 801 is configured to control the receiver 802 and the transmitter 803 to obtain a coordinated multi-point transmission COMP cooperative terminal set of the coordinated multi-point transmission COMP coordinated cell set other than the cell corresponding to the network device.
  • the processor 801 is configured to allocate the sounding reference signal SRS resource to the N terminals determined by the determining module 605, and delete the terminal that fails to allocate the sounding reference signal SRS resource from the coordinated multipoint transmission COMP cooperative terminal.
  • the processor 801 is further configured to detect whether the sounding reference signal SRS channel of each terminal in the coordinated multi-point transmission COMP cooperative terminal set is reliable; and the terminal corresponding to the unreliable sounding reference signal SRS channel is detected from the cooperation Point transmission COMP collaboration terminal centralized deletion Save
  • the processor 801 is further configured to perform a zero-adding process on the sounding reference signal SRS channel whose detection result is unreliable.
  • the network device acquires a signal parameter of the terminal, detects whether the terminal satisfies the selection condition according to the signal parameter, and adds the terminal that meets the selection condition to the coordinated multi-point transmission COMP cooperative terminal set to solve the problem.
  • the network device provided by the embodiment of the present invention determines the priority of each terminal in the initial coordinated terminal set to accept the COMP service, so as to provide the COMP service only for the predetermined number of terminals in the initial coordinated terminal set, and reduce the terminal that accepts the COMP service.
  • the number of the system can be used to further improve the system performance, and the system complexity is simplified.
  • the network device provided by the embodiment of the present invention achieves the purpose of further improving system performance by updating the terminal in the initial coordinated terminal set.
  • FIG. 9 a device configuration diagram of a terminal according to an embodiment of the present invention is shown.
  • the terminal can include:
  • a second parameter obtaining module 901 configured to acquire signal parameters of the terminal
  • the parameter sending module 902 is configured to send the signal parameter to the network device, so that the network device adds the terminal to the cell corresponding to the network device after detecting that the terminal meets the selection condition according to the signal parameter.
  • the cell corresponding to the network device is a cell in a coordinated multi-point transmission COMP coordinated cell set, and is a serving cell of the terminal.
  • the terminal obtained by the embodiment of the present invention obtains the signal parameter of the terminal and sends it to the network device, so that the network device can detect whether the terminal is added to the coordinated multi-point of the cell corresponding to the network device according to the signal parameter.
  • the transmission of the COMP cooperative terminal set solves the problem that in the prior art, all the terminals that can obtain the gain from the COMP service are selected as the terminals that accept the COMP service when the SRS resources are limited, thereby seriously affecting the system performance problem and improving The purpose of system performance.
  • FIG. 10 shows A device configuration diagram of a terminal according to another embodiment of the present invention.
  • the terminal can include:
  • the second parameter obtaining module 1001 is configured to acquire a signal parameter of the terminal.
  • the parameter sending module 1002 is configured to send the signal parameter to the network device, so that the network device adds the terminal to the cell corresponding to the network device after detecting that the terminal meets the selection condition according to the signal parameter.
  • the cell corresponding to the network device is a cell in a coordinated multi-point transmission COMP coordinated cell set, and is a serving cell of the terminal.
  • the signal parameter includes at least one of a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal.
  • the signal strength received by the terminal includes: a signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal, and all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set arrive The signal strength of the terminal.
  • the downlink reference signal received power RSRP corresponding to the terminal includes: a downlink reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set, and the cell in the coordinated multi-point transmission COMP coordinated cell set
  • the downlink reference signal of all the cells outside receives the power RSRP.
  • the terminal obtained by the embodiment of the present invention obtains the signal parameter of the terminal and sends it to the network device, so that the network device can detect whether the terminal is added to the coordinated multi-point of the cell corresponding to the network device according to the signal parameter.
  • the transmission of the COMP cooperative terminal set solves the problem that in the prior art, all the terminals that can obtain the gain from the COMP service are selected as the terminals that accept the COMP service when the SRS resources are limited, thereby seriously affecting the system performance problem and improving The purpose of system performance.
  • FIG. 11 a device configuration diagram of a terminal according to an embodiment of the present invention is shown.
  • the terminal may include: a processor 1101, a receiver 1102, and a transmitter 1103;
  • the processor 1101 is configured to control the receiver 1102 and the transmitter 1103 to obtain a signal parameter of the terminal.
  • the transmitter 1103 is configured to send the signal parameter to the network device, so that the network device adds the terminal to the cell corresponding to the network device after detecting that the terminal meets the selection condition according to the signal parameter.
  • Collaborative multipoint transmission of COMP collaborative terminal sets The cell corresponding to the network device is a coordinated multi-point transmission of a cell in a COMP coordinated cell set, and is a serving cell of the terminal.
  • the terminal obtained by the embodiment of the present invention obtains the signal parameter of the terminal and sends it to the network device, so that the network device can detect whether the terminal is added to the coordinated multi-point of the cell corresponding to the network device according to the signal parameter.
  • the transmission of the COMP cooperative terminal set solves the problem that in the prior art, all the terminals that can obtain the gain from the COMP service are selected as the terminals that accept the COMP service when the SRS resources are limited, thereby seriously affecting the system performance problem and improving The purpose of system performance.
  • FIG. 12 shows a device configuration diagram of a terminal according to another embodiment of the present invention.
  • the terminal may include: a processor 1201, a receiver 1202, and a transmitter 1203;
  • the processor 1201 is configured to control the receiver 1202 and the transmitter 1203 to acquire signal parameters of the terminal.
  • the transmitter 1203 is configured to send the signal parameter to the network device, so that the network device adds the terminal to the cell corresponding to the network device after detecting that the terminal meets the selection condition according to the signal parameter Collaborative multipoint transmission of COMP collaborative terminal sets;
  • the cell corresponding to the network device is a cell in a coordinated multi-point transmission COMP coordinated cell set, and is a serving cell of the terminal.
  • the signal parameter includes at least one of a signal strength received by the terminal, a downlink reference signal received power RSRP corresponding to the terminal, or a signal quality indicator CQI of the terminal.
  • the signal strength received by the terminal includes: a signal strength of each cell in the coordinated multi-point transmission COMP coordinated cell set to the terminal, and all cells except the cell in the coordinated multi-point transmission COMP coordinated cell set arrive The signal strength of the terminal.
  • the downlink reference signal received power RSRP corresponding to the terminal includes: a downlink reference signal received power RSRP of each cell in the coordinated multi-point transmission COMP coordinated cell set, and the cell in the coordinated multi-point transmission COMP coordinated cell set
  • the downlink reference signal of all the cells outside receives the power RSRP.
  • the terminal provided by the embodiment of the present invention obtains the signal parameter of the terminal and sends it to the network device, so that the network device can detect whether to add the terminal according to the signal parameter.
  • the coordinated multi-point transmission COMP cooperative terminal set of the cell corresponding to the network device solves the problem that the terminal that can obtain the gain from the COMP service is selected as the terminal that accepts the COMP service in the prior art when the SRS resource is limited. Therefore, the problem of system performance is seriously affected, and the purpose of improving system performance is achieved.
  • FIG. 13 a system configuration diagram of a terminal selection system according to an embodiment of the present invention is shown.
  • the terminal selection system may include the network device 001 as shown in any of the above-described FIGS. 5 to 8 and the terminal 002 as shown in any of the above-described FIGS. 9 to 12.
  • the network device acquires the signal parameter of the terminal, detects whether the terminal satisfies the selection condition according to the signal parameter, and adds the terminal that meets the selection condition to the coordinated multi-point transmission COMP cooperative terminal.
  • the solution solves the problem that the terminal that can obtain the gain from the COMP service is selected as the terminal that accepts the COMP service under the condition that the SRS resource is limited, thereby seriously affecting the performance of the system and achieving the purpose of improving the system performance.
  • the network device determines the priority of each terminal in the initial coordinated terminal set to accept the COMP service, so as to provide the COMP service only for a predetermined number of terminals in the initial coordinated terminal set.
  • the network device updates the terminal in the initial coordinated terminal set, Reach further mention The purpose of system performance.
  • the network device and the terminal provided by the foregoing embodiment perform the terminal selection, only the division of the foregoing functional modules is illustrated. In actual applications, the foregoing functions may be allocated by different functional modules according to requirements.
  • the internal structure of the device is divided into different functional modules to perform all or part of the functions described above.
  • the network device and the terminal provided by the foregoing embodiments are in the same concept as the method for selecting a terminal. For the specific implementation process, refer to the method embodiment, and details are not described herein again.

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Abstract

本发明公开了一种终端选择方法、网络设备、终端及系统，属于无线通信领域。所述方法包括：获取终端的信号参数，所述终端为所述网络设备对应的小区当前服务的终端；根据获取到的所述信号参数检测所述终端是否满足选择条件；若检测结果为所述终端满足选择条件，则将所述终端添加入所述网络设备对应的小区的协作多点传输COMP协作终端集。本发明通过获取终端的信号参数，根据信号参数将满足选择条件的终端添加入协作多点传输COMP协作终端集，解决了现有技术中在SRS资源受限的情况下将所有能够从COMP服务中获得增益的终端都选择为接受COMP服务的终端，从而严重影响系统性能的问题，达到提高系统性能的目的。

Description

终端选择方法、 网络设备、 终端及系统 本申请要求 2013 年 08 月 09 日提交中国专利局、 申请号为 201310347945.6, 发明名称为 《终端选择方法、 网络设备、 终端及系统》的 中国专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及无线通信领域， 特别涉及一种终端选择方法、 网络设备、 终端及系统。
背景技术
COMP ( Coordinated Multiple Points, 协作多点传输）是一种通过小区 间、 基站间、 基站与中继节点之间的相互协作来提升小区平均吞吐量性能 和小区边缘用户吞吐量的传输技术。
在 COMP技术中， 可以相互协作的最大小区集合可以称为一个 COMP 协作小区集， 一个协作小区集中至少包括两个小区。 接受该协作小区集的 COMP服务的终端为协作终端， 对于一个协作终端来说， 协作小区集中一 个小区为服务小区， 用于向该终端发送数据和控制指令， 其余小区为协助 小区，仅用于向该终端协助发送数据。在 TD-LTE ( Time Division Long Term Evolution, 分时长期演进） 系统中， 一个协作小区集中的所有小区估算同 一终端的上行 SRS ( Sounding Reference Signal, 探测参考信号）信道信息， 并基于估算出的上行 SRS信道信息向该协作终端提供 COMP服务。
由于受到用户位置、 终端性能以及信道干扰等方面的影响， 并不是所 有终端都适合使用 COMP服务， 某些终端并不能从 COMP服务中获益， 因 此， 为了节约系统资源， 有必要对协作终端进行选择。
现有的选择协作终端的方法， 对于某一终端， 首先判断该终端是否可 以从 COMP服务中获得传输速率的提升； 若是， 则进一步判断当前为该终 端服务的小区除了该终端的服务小区之外， 是否还有其他小区， 若是， 则 将该终端选择为协作终端。 在实现本发明的过程中， 发明人发现现有技术至少存在以下问题：
COMP 功能需要获取用户的信道信息， 并且信道信息的可用性与准确 性， 直接影响着 COMP性能。 为了保证 SRS信道信息的可用性和可靠性， SRS的周期就要尽可能的短， SRS信道的 SINR ( Signal to Interference plus Noise Ratio, 信号与干扰加噪声比）要高， 这就可能出现 SRS资源受限的 情况。 而现有技术提供的方法， 将所有能够从 COMP服务中获得增益的终 端都选择为协作终端， 通过有限的 SRS资源为所有选择出的协作终端提供 COMP服务， 会严重影响系统性能。
发明内容 为了解决现有技术中在 SRS资源受限的情况下将所有能够从 COMP服 务中获得增益的终端都选择为接受 COMP服务的终端， 从而严重影响系统 性能的问题， 本发明实施例提供了一种终端选择方法、 网络设备、 终端及 系统。 所述技术方案如下：
第一方面， 提供了一种终端选择方法， 用于网络设备中， 所述网络设 备用于对应维护协作多点传输 COMP协作小区集中的一个小区， 所述方法 包括：
获取终端的信号参数， 所述终端为所述网络设备对应的小区当前服务 的终端；
根据获取到的所述信号参数检测所述终端是否满足选择条件； 若检测结果为所述终端满足选择条件， 则将所述终端添加入所述网络 设备对应的小区的协作多点传输 COMP协作终端集。
在第一方面的第一种可能实现方式中， 所述信号参数包括所述终端接 收到的信号强度、 所述终端对应的参考信号接收功率 RSRP或者所述终端 的信号质量指示符 CQI中的至少一种； 所述终端对应的参考信号接收功率 RSRP包括所述终端对应的下行参考信号接收功率 RSRP或者所述终端对应 的上行参考信号接收功率 RSRP;
所述获取终端的信号参数， 包括：
接收所述终端发送的所述终端接收到的信号强度、 所述终端对应的下 行参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少 一种；
或者，
通过滤波获取所述终端对应的上行参考信号接收功率 RSRP。
结合第一方面的第一种可能实现方式， 在第一方面的第二种可能实现 方式中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协作 小区集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度； 当所述信号参数包括所述终端接收到的信号强度时， 所述根据获取到 的所述信号参数检测所述终端是否满足选择条件， 包括：
检测第一预定条件是否成立；
若所述第一预定条件成立， 则确定所述终端满足选择条件；
其中， 所述第一预定条件包括：
所述协作多点传输 COMP协作小区集中的各个小区到达所述终端的信 号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外的所有 小区到达所述终端的信号强度之和的比值不小于第一阔值；
和 /或，所述协作多点传输 COMP协作小区集中的各个小区到达所述终 端的信号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度之和的差不小于第二阔值。
结合第一方面的第一种可能实现方式， 在第一方面的第三种可能实现 方式中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协作 小区集内各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度； 当所述信号参数包括所述终端接收到的信号强度时， 所述根据获取到 的所述信号参数检测所述终端是否满足选择条件， 包括：
将所述协作多点传输 COMP协作小区集内各个小区到达所述终端的信 号强度按照从强到弱的顺序进行排序， 获得信号强度序列；
判断所述信号强度序列中前 n位的信号强度之和与所述除所述协作多 点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强 度之和的比值是否不小于第三阔值；
若所述比值不小于所述第三阔值， 则确定所述终端满足选择条件； 若所述比值小于所述第三阔值， 则进一步判断所述信号强度序列中前 n+1位的信号强度之和与所述除所述协作多点传输 COMP协作小区集中的 小区之外的所有小区到达所述终端的信号强度之和的比值是否不小于所述 第三阔值；
其中， 所述协作多点传输 COMP协作小区集中的小区数为 m, K n < m-1。
结合第一方面的第一种可能实现方式， 在第一方面的第四种可能实现 方式中， 所述终端对应的参考信号接收功率 RSRP 包括： 所述协作多点传 输 COMP协作小区集内各个小区的参考信号接收功率 RSRP以及所述除所 述协作多点传输 COMP协作小区集中的小区之外的所有小区的参考信号接 收功率 RSRP;
当所述信号参数包括所述终端对应的参考信号接收功率 RSRP 时， 所 述根据获取到的所述信号参数检测所述终端是否满足选择条件， 包括： 检测第二预定条件是否成立；
若所述第二预定条件成立， 则确定所述终端满足选择条件；
其中， 所述第二预定条件包括：
所述协作多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值不小于第四阔值；
和 /或，所述协作多点传输 COMP协作小区集内各个小区的参考信号接 收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区 之外的所有小区的参考信号接收功率 RSRP之和的差不小于第五阔值； 和 /或， 所述网络设备对应的小区的参考信号接收功率 RSRP与所述协 作多点传输 COMP 协作小区集内其它任一相邻小区的参考信号接收功率 RSRP的差不大于第六阔值。
结合第一方面的第一种可能实现方式， 在第一方面的第五种可能实现 方式中， 当所述信号参数包括所述终端的信号质量指示符 CQI时， 所述根 据获取到的所述信号参数检测所述终端是否满足选择条件， 包括：
检测第三预定条件是否成立；
若所述第三预定条件成立， 则确定所述终端满足选择条件；
其中， 所述第三预定条件包括： 所述终端的信号质量指示符 CQI不小于第七阔值。
结合第一方面、 第一方面的第一种可能实现方式、 第一方面的第二种 可能实现方式、 第一方面的第三种可能实现方式、 第一方面的第四种可能 实现方式或者第一方面的第五种可能实现方式， 在第一方面的第六种可能 实现方式中， 所述将所述终端添加入所述网络设备对应的小区的协作多点 传输 COMP协作终端集之后， 还包括：
按照预定策略对所述协作多点传输 COMP协作终端集中的各个终端进 行排序， 获得终端序列；
将所述终端序列中的前 N个终端确定为接受协作多点传输 COMP服务 的终端， N为预先确定的正整数；
所述预定策略包括：
按照所述各个终端对应的、 所述协作多点传输 COMP协作小区集内各 个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的参考信号接收功率 RSRP之和的比 值从大到小的顺序进行排序；
或者， 按照所述各个终端对应的、 所述协作多点传输 COMP协作小区 集内除所述终端的服务小区之外的其它各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值从大到小的顺序进行排序； 或者， 按照所述各个终端预计接受所述协作多点传输 COMP协作小区 集中各小区的协作多点传输服务之后、信号与干扰和噪声比 SINR的提升量 从大到小的顺序进行排序。
结合第一方面的第六种可能实现方式， 在第一方面的第七种可能实现 方式中， 所述将所述终端添加入所述网络设备对应的小区的协作多点传输 COMP协作终端集之后， 还包括：
获取所述协作多点传输 COMP协作小区集中除所述网络设备对应的小 区之外的其它小区的协作多点传输 COMP协作终端集。
结合第一方面的第六种可能实现方式， 在第一方面的第八种可能实现 方式中， 所述将所述终端序列中的前 N个终端确定为接受协作多点传输 COMP服务的终端之后， 还包括：
为确定的所述 N个终端分配探测参考信号 SRS资源； 将分配所述探测参考信号 SRS 资源失败的终端从所述协作多点传输 COMP协作终端集中删除。
结合第一方面的第六种可能实现方式， 在第一方面的第九种可能实现 方式中， 所述将所述终端序列中的前 N个终端确定为接受协作多点传输 COMP服务的终端之后， 还包括：
检测所述协作多点传输 COMP协作终端集中各个终端的探测参考信号 SRS信道是否可靠；
将检测结果为不可靠的探测参考信号 SRS信道所对应的终端从所述协 作多点传输 COMP协作终端集中删除， 或者， 对检测结果为不可靠的探测 参考信号 SRS信道做添零处理。
第二方面， 提供了一种终端选择方法， 用于终端中， 所述方法包括： 获取所述终端的信号参数；
将所述信号参数发送给网络设备， 以便所述网络设备在根据所述信号 参数检测所述终端满足选择条件后， 将所述终端添加入所述网络设备对应 的小区的协作多点传输 COMP协作终端集；
其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
在第二方面的第一种可能实现方式中， 所述信号参数包括所述终端接 收到的信号强度、 所述终端对应的下行参考信号接收功率 RSRP或者所述 终端的信号质量指示符 CQI中的至少一种。
结合第二方面的第一种可能实现方式， 在第二方面的第二种可能实现 方式中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协作 小区集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
结合第二方面的第一种可能实现方式， 在第二方面的第三种可能实现 方式中， 所述终端对应的下行参考信号接收功率 RSRP 包括： 所述协作多 点传输 COMP协作小区集内各个小区的下行参考信号接收功率 RSRP以及 所述除所述协作多点传输 COMP协作小区集中的小区之外的所有小区的下 行参考信号接收功率 RSRP。
第三方面， 提供了一种网络设备， 所述网络设备用于对应维护协作多 点传输 COMP协作小区集中的一个小区， 所述网络设备包括： 第一参数获取模块， 用于获取终端的信号参数， 所述终端为所述网络 设备对应的小区当前服务的终端；
检测模块， 用于根据所述第一参数获取模块获取到的所述信号参数检 测所述终端是否满足选择条件；
添加模块， 用于若所述检测模块的检测结果为所述终端满足选择条件， 则将所述终端添加入所述网络设备对应的小区的协作多点传输 COMP协作 终端集。
在第三方面的第一种可能实现方式中， 所述第一参数获取模块， 包括： 接收单元， 用于接收所述终端发送的、 所述终端接收到的信号强度、 所述终端对应的下行参考信号接收功率 RSRP或者所述终端的信号质量指 示符 CQI中的至少一种；
获取单元， 用于通过滤波获取所述终端对应的上行参考信号接收功率
RSRP;
其中， 所述信号参数包括所述终端接收到的信号强度、 所述终端对应 的参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少 一种； 所述终端对应的参考信号接收功率 RSRP 包括所述终端对应的下行 参考信号接收功率 RSRP 或者所述终端对应的上行参考信号接收功率 RSRP。
结合第三方面的第一种可能实现方式， 在第三方面的第二种可能实现 方式中， 所述检测模块， 包括：
第一检测单元， 用于当所述信号参数包括所述终端接收到的信号强度 时， 检测第一预定条件是否成立；
第一确定单元， 用于若所述第一检测单元的检测结果为所述第一预定 条件成立， 则确定所述终端满足选择条件；
所述第一预定条件包括：
所述协作多点传输 COMP协作小区集中的各个小区到达所述终端的信 号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外的所有 小区到达所述终端的信号强度之和的比值不小于第一阔值；
和 /或，所述协作多点传输 COMP协作小区集中的各个小区到达所述终 端的信号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度之和的差不小于第二阔值； 其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
结合第三方面的第一种可能实现方式， 在第三方面的第三种可能实现 方式中， 所述检测模块， 包括：
排序单元， 用于当所述信号参数包括所述终端接收到的信号强度时， 将所述协作多点传输 COMP协作小区集内各个小区到达所述终端的信号强 度按照从强到弱的顺序进行排序， 获得信号强度序列；
判断单元， 用于判断所述信号强度序列中前 n位的信号强度之和与所 述除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所 述终端的信号强度之和的比值是否不小于第三阔值；
第二确定单元， 用于若所述比值不小于所述第三阔值， 则确定所述终 端满足选择条件；
所述判断单元， 用于若所述比值小于所述第三阔值， 则进一步判断所 述信号强度序列中前 n+1 位的信号强度之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度之和 的比值是否不小于所述第三阔值；
所述协作多点传输 COMP协作小区集中的小区数为 m, K n < m-1 ; 其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集内各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
结合第三方面的第一种可能实现方式， 在第三方面的第四种可能实现 方式中， 所述检测模块， 包括：
第二检测单元， 用于当所述信号参数包括所述终端对应的参考信号接 收功率 RSRP时， 检测第二预定条件是否成立；
第三确定单元， 用于若所述第二检测单元的检测结果为所述第二预定 条件成立， 则确定所述终端满足选择条件；
所述第二预定条件包括：
所述协作多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值不小于第四阔值； 和 /或，所述协作多点传输 COMP协作小区集内各个小区的参考信号接 收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区 之外的所有小区的参考信号接收功率 RSRP之和的差不小于第五阔值； 和 /或， 所述网络设备对应的小区的参考信号接收功率 RSRP与所述协 作多点传输 COMP 协作小区集内其它任一相邻小区的参考信号接收功率 RSRP的差不大于第六阔值；
其中， 所述终端对应的参考信号接收功率 RSRP 包括： 所述协作多点 传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP以及所述除 所述协作多点传输 COMP协作小区集中的小区之外的所有小区的参考信号 接收功率 RSRP。
结合第三方面的第一种可能实现方式， 在第三方面的第五种可能实现 方式中， 所述检测模块， 包括：
第三检测单元， 用于当所述信号参数包括所述终端的信号质量指示符 CQI时， 检测第三预定条件是否成立；
第四确定单元， 用于若所述第三检测单元的检测结果为所述第三预定 条件成立， 则确定所述终端满足选择条件；
所述第三预定条件包括：
所述终端的信号质量指示符 CQI不小于第七阔值。
结合第三方面、 第三方面的第一种可能实现方式、 第三方面的第二种 可能实现方式、 第三方面的第三种可能实现方式、 第三方面的第四种可能 实现方式或者第三方面的第五种可能实现方式， 在第三方面的第六种可能 实现方式中， 所述网络设备还包括：
排序模块， 用于按照预定策略对所述协作多点传输 COMP协作终端集 中的各个终端进行排序， 获得终端序列；
确定模块， 用于将所述终端序列中的前 N个终端确定为优先接受协作 多点传输 COMP服务的终端， N为预先确定的正整数；
所述预定策略包括：
按照所述各个终端对应的、 所述协作多点传输 COMP协作小区集内各 个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的参考信号接收功率 RSRP之和的比 值从大到小的顺序进行排序； 或者， 按照所述各个终端对应的、 所述协作多点传输 COMP协作小区 集内除所述终端的服务小区之外的其它各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值从大到小的顺序进行排序； 或者， 按照所述各个终端预计接受所述协作多点传输 COMP协作小区 集中各小区的协作多点传输服务之后、信号与干扰和噪声比 SINR的提升量 从大到小的顺序进行排序。
结合第三方面的第六种可能实现方式， 在第三方面的第七种可能实现 方式中， 所述网络设备还包括：
终端集获取模块， 用于获取所述协作多点传输 COMP协作小区集中除 所述网络设备对应的小区之外的其它小区的协作多点传输 COMP协作终端 结合第三方面的第六种可能实现方式， 在第三方面的第八种可能实现 方式中， 所述网络设备还包括：
资源分配模块， 用于为所述确定模块确定的 N个终端分配探测参考信 号 SRS资源；
第一删除模块， 用于将分配所述探测参考信号 SRS资源失败的终端从 所述协作多点传输 COMP协作终端集中删除。
结合第三方面的第六种可能实现方式， 在第三方面的第九种可能实现 方式中， 所述网络设备还包括：
信道检测模块， 用于检测所述协作多点传输 COMP协作终端集中各个 终端的探测参考信号 SRS信道是否可靠；
第二删除模块， 用于将检测结果为不可靠的探测参考信号 SRS信道所 对应的终端从所述协作多点传输 COMP协作终端集中删除；
添零模块， 用于对检测结果为不可靠的探测参考信号 SRS信道做添零 处理。
第四方面， 提供了一种终端， 所述终端包括：
第二参数获取模块， 用于获取所述终端的信号参数；
参数发送模块， 用于将所述信号参数发送给网络设备， 以便所述网络 设备在根据所述信号参数检测所述终端满足选择条件后， 将所述终端添加 入所述网络设备对应的小区的协作多点传输 COMP协作终端集； 其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
在第四方面的第一种可能实现方式中， 所述信号参数包括所述终端接 收到的信号强度、 所述终端对应的下行参考信号接收功率 RSRP或者所述 终端的信号质量指示符 CQI中的至少一种。
结合第四方面的第一种可能实现方式， 在第四方面的第二种可能实现 方式中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协作 小区集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
结合第四方面的第一种可能实现方式， 在第四方面的第三种可能实现 方式中， 所述终端对应的下行参考信号接收功率 RSRP 包括： 所述协作多 点传输 COMP协作小区集内各个小区的下行参考信号接收功率 RSRP以及 所述除所述协作多点传输 COMP协作小区集中的小区之外的所有小区的下 行参考信号接收功率 RSRP。
第五方面， 提供了一种选择终端的系统， 所述系统包括：
如上述第三方面所述的网络设备以及如上述第四方面所述的终端。 本发明实施例提供的技术方案带来的有益效果是：
通过获取终端的信号参数， 根据信号参数检测该终端是否满足选择条 件， 并将满足选择条件的终端添加入协作多点传输 COMP协作终端集， 解 决了现有技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得 增益的终端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问 题， 达到提高系统性能的目的。
附图说明 为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例描述 中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅 是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性 劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明一个实施例提供的终端选择方法的方法流程图； 图 2是本发明另一实施例提供的终端选择方法的方法流程图； 图 3是本发明一个实施例提供的终端选择方法的方法流程图； 图 4是本发明另一实施例提供的终端选择方法的方法流程图； 图 5是本发明一个实施例提供的网络设备的设备构成图；
图 6是本发明另一实施例提供的网络设备的设备构成图；
图 7是本发明一个实施例提供的网络设备的设备构成图；
图 8是本发明另一实施例提供的网络设备的设备构成图；
图 9是本发明一个实施例提供的终端的设备构成图；
图 10是本发明另一实施例提供的终端的设备构成图；
图 11是本发明一个实施例提供的终端的设备构成图；
图 12是本发明另一实施例提供的终端的设备构成图；
图 13是本发明另一实施例提供的终端选择系统的系统构成图。
具体实施方式 为使本发明的目的、 技术方案和优点更加清楚， 下面将结合附图对本 发明实施方式作进一步地详细描述。
在 COMP协作小区集为 COMP技术中，可以相互协作的最大小区集合 称为一个协作多点传输 COMP协作小区集， 其中， 一个协作小区集中至少 包括两个小区。 接受该协作小区集的 COMP服务的终端为协作终端， 对于 一个协作终端来说， 协作小区集中一个小区为服务小区， 用于向该终端发 送数据和控制指令， 其余小区为协助小区， 仅用于向该终端协助发送数据。 请参考图 1 ,其示出了本发明一个实施例提供的终端选择方法的方法流 程图。 该终端选择方法可以应用与网络设备中， 该网络设备用于对应维护 协作多点传输 COMP协作小区集中的一个小区，该终端选择方法可以包括： 步骤 102, 获取终端的信号参数， 该终端为该网络设备对应的小区当前 服务的终端；
步骤 104, 根据获取到的该信号参数检测该终端是否满足选择条件； 步骤 106, 若检测结果为该终端满足选择条件， 则将该终端添加入该网 络设备对应的小区的协作多点传输 COMP协作终端集。
综上所述， 本发明实施例提供的终端选择方法， 通过获取终端的信号 参数， 根据信号参数检测该终端是否满足选择条件， 并将满足选择条件的 终端添加入协作多点传输 COMP协作终端集，解决了现有技术中在 SRS资 源受限的情况下将所有能够从 COMP服务中获得增益的终端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问题， 达到提高系统性能的 目的。 基于上述图 1所示的终端选择方法的更为优选的方案，请参见图 2, 其 示出了本发明另一实施例提供的终端选择方法的方法流程图。 该终端选择 方法可以应用与网络设备中， 该网络设备可以实现为基站或者基站的一部 分， 该网络设备用于对应维护协作多点传输 COMP协作小区集中的一个小 区。 该终端选择方法可以包括：
步骤 202, 网络设备获取终端的信号参数， 该终端为该网络设备对应的 小区当前服务的终端；
其中， 该信号参数包括该终端接收到的信号强度、 该终端对应的 RSRP ( Reference Signal Received Power, 参考信号接收功率 )或者该终端的 CQI ( Channel Quality Indication,信道质量指示符）中的至少一种； 该终端对应 的参考信号接收功率 RSRP包括该终端对应的下行参考信号接收功率 RSRP 或者该终端对应的上行参考信号接收功率 RSRP;
具体的， 网络设备可以接收该终端测量并发送的该终端接收到的信号 强度、 该终端对应的下行参考信号接收功率 RSRP或者该终端的信号质量 指示符 CQI中的至少一种。
或者，
网络设备也可以获取该终端对应的上行参考信号接收功率 RSRP。
需要说明的是， 当终端对应的参考信号接收功率 RSRP 包括该终端对 应的下行参考信号接收功率 RSRP 时， 该终端可以直接测量能够接收到信 号的所有小区的下行参考信号接收功率 RSRP并发送给网络设备。
当终端对应的参考信号接收功率 RSRP 包括该终端对应的上行参考信 号接收功率 RSRP时， 网络设备可以通过对该终端的 SRS信道进行长期滤 波或者通过对该终端的上行解调导频滤波获得该终端对该网络设备当前对 应小区的上行 RSRP, 同时， 网络设备还从该终端能够接收到信号的其它小 区 （包括协作集内小区和协作集外小区）获取该终端对应其它小区的上行 RSRP。
或者， 网络设备也可以通过对该终端的 SRS信道进行长期滤波或者通 过对该终端的上行解调导频滤波获得该终端对当前服务小区 （即该网络设 备当前对应小区）的上行 RSRP, 并接收该终端发送的、 该终端当前服务小 区 （即该网络设备对应的小区） 与该终端能够接收到信号的其它小区的下 行 RSRP的差， 并将该下行 RSRP的差作为上行 RSRP的差， 结合该终端对 当前服务小区的上行 RSRP估算该终端对能够接收到信号的其它小区的上 行 RSRP。
步骤 204,网络设备根据获取到的该信号参数检测该终端是否满足选择 条件；
网络设备可以通过协作集内干扰和协作集外干扰比检测该终端是否满 足选择条件。 具体的， 该终端接收到的信号强度包括： 该协作多点传输 COMP协作小区集中的各个小区到达该终端的信号强度以及除该协作多点 传输 COMP协作小区集中的小区之外的所有小区到达该终端的信号强度； 当该信号参数包括该终端接收到的信号强度时， 网络设备检测第一预定条 件是否成立； 若该第一预定条件成立， 则确定该终端满足选择条件； 其中， 该第一预定条件包括：
该协作多点传输 COMP协作小区集中的各个小区到达该终端的信号强 度之和与除该协作多点传输 COMP协作小区集中的小区之外的所有小区到 达该终端的信号强度之和的比值不小于第一阔值； 和 /或， 该协作多点传输 COMP协作小区集中的各个小区到达该终端的信号强度之和与除该协作多 点传输 COMP协作小区集中的小区之外的所有小区到达该终端的信号强度 之和的差不小于第二阔值。
网络设备也可以通过协作小区内干扰和协作小区外干扰比来检测该终 端是否满足选择条件。 具体的， 当该信号参数包括该终端接收到的信号强 度时， 网络设备将该协作多点传输 COMP协作小区集内各个小区到达该终 端的信号强度按照从强到弱的顺序进行排序， 获得信号强度序列； 并判断 该信号强度序列中前 n位的信号强度之和与该除该协作多点传输 COMP协 作小区集中的小区之外的所有小区到达该终端的信号强度之和的比值是否 不小于第三阔值； 若该比值不小于该第三阔值， 则确定该终端满足选择条 件； 若该比值小于该第三阔值， 则进一步判断该信号强度序列中前 n+1位 的信号强度之和与该除该协作多点传输 COMP协作小区集中的小区之外的 所有 d、区到达该终端的信号强度之和的比值是否不小于该第三阔值； 其中， 该协作多点传输 COMP协作小区集中的小区数为 m, 1 n m-l。
具体比如， 网络设备首先从协作小区集内的协作小区到达用户的信号 中选择一个最强的信号， 比如， 选择用户上报的、 协作小区集内各小区的 下行 RSRP或者上行 SRS信道信号中最强的一个所对应的小区的信号， 或 者，接^:终端通过 IMR ( Interference Measurement Resource,干扰测量单元 ) 测得的、 协作小区集内各小区到达终端的信号中最强的一个。 然后， 网络 设备计算这个最强信号在终端接收到的总信号中所占比重是否大于某一预 定数值。 若是， 则将该终端满足选择条件。 否则， 网络设备再从协作小区 集内的协作小区到达用户的信号中选择一个次强的信号， 并计算该最强信 号和次强信号在终端接收到的总信号中所占比重是否大于该预定数值， 以 此类推， 直至协作小区集内的所有小区都计算完毕。
或者， 网络设备也可以通过终端对应的 RSRP来检测该终端是否满足 选择条件。 具体的， 该终端对应的参考信号接收功率 RSRP 包括： 该协作 多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP以及该 除该协作多点传输 COMP协作小区集中的小区之外的所有小区的参考信号 接收功率 RSRP; 当该信号参数包括该终端对应的参考信号接收功率 RSRP 时， 网络设备检测第二预定条件是否成立； 若该第二预定条件成立， 则确 定该终端满足选择条件； 其中， 该第二预定条件包括：
该协作多点传输 COMP 协作小区集内各个小区的参考信号接收功率 RSRP之和与该除该协作多点传输 COMP协作小区集中的小区之外的所有 小区的参考信号接收功率 RSRP之和的比值不小于第四阔值； 和 /或， 该协 作多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP之和 与该除该协作多点传输 COMP协作小区集中的小区之外的所有小区的参考 信号接收功率 RSRP之和的差不小于第五阔值； 和 /或， 该网络设备对应的 小区的参考信号接收功率 RSRP与该协作多点传输 COMP协作小区集内其 它任一相邻小区的参考信号接收功率 RSRP的差不大于第六阔值。
或者， 网络设备也可以通过终端对应的 CQI来检测该终端是否满足选 择条件。 具体的， 当该信号参数包括该终端的信号质量指示符 CQI时， 网 络设备检测第三预定条件是否成立； 若该第三预定条件成立， 则确定该终 端满足选择条件； 其中， 该第三预定条件包括： 该终端的信号质量指示符
CQI不小于第七阔值。
需要说明的是， 上述方法可以单独使用， 也可以任意多种结合使用来 检测该终端是否满足选择条件。
步骤 206, 若检测结果为该终端满足选择条件， 则网络设备将该终端添 加入该网络设备对应的小区的协作多点传输 COMP协作终端集；
具体的， 若该终端满足预定条件， 则将该终端添加到该网络设备对应 的小区的协作多点传输 COMP协作终端集中， 获得初始的协作终端集合。
优选的， 由于 COMP协作小区集中的 SRS资源有限， 因此， 有可能无 法为初始的协作终端集合中所有终端同时提供 COMP服务， 因此， 网络设 备还可以确定初始的协作终端集合中各终端接受 COMP服务的优先级， 以 便只为初始的协作终端集合中预定个数的终端提供 COMP服务。具体比如， 网络设备首先可以按照预定策略对该协作多点传输 COMP协作终端集中的 各个终端进行排序， 获得终端序列； 再将该终端序列中的前 N个终端确定 为接受协作多点传输 COMP服务的终端， N为预先确定的正整数； 其中， 该预定策略包括：
按照该各个终端对应的、 该协作多点传输 COMP协作小区集内各个小 区的参考信号接收功率 RSRP之和与该除该协作多点传输 COMP协作小区 集中的小区之外的所有小区的参考信号接收功率 RSRP之和的比值从大到 小的顺序进行排序； 或者，按照该各个终端对应的、该协作多点传输 COMP 协作小区集内除该终端的服务小区之外的其它各个小区的参考信号接收功 率 RSRP之和与该除该协作多点传输 COMP协作小区集中的小区之外的所 有小区的参考信号接收功率 RSRP之和的比值从大到小的顺序进行排序； 或者， 按照该各个终端预计接受该协作多点传输 COMP协作小区集中各小 区的协作多点传输服务之后、信号与干扰和噪声比 SINR的提升量从大到小 的顺序进行排序。
步骤 208, 网络设备获取该协作多点传输 COMP协作小区集中除该网 络设备对应的小区之外的其它小区的协作多点传输 COMP协作终端集； 网络设备获取 COMP协作小区集中其他小区的 COMP协作终端集，以 便协作向其他小区当前服务的终端发送数据。
步骤 210, 网络设备更新对应的小区的协作多点传输 COMP协作终端 为了进一步提升 C0MP服务性能， 网络设备还可以对 COMP协作终端 集进行更新。 具体的， 网络设备可以为确定的该 N个终端分配探测参考信 号 SRS资源； 并将分配该探测参考信号 SRS资源失败的终端从该协作多点 传输 COMP协作终端集中删除。
或者， 网络设备可以检测该 COMP协作终端集中各个终端的探测参考 信号 SRS信道是否可靠； 并将检测结果为不可靠的探测参考信号 SRS信道 所对应的终端从该协作多点传输 COMP协作终端集中删除。
优选的， 网络设备也可以不将检测结果为不可靠的探测参考信号 SRS 信道所对应的终端从该协作多点传输 COMP协作终端集中删除， 而只对检 测结果为不可靠的探测参考信号 SRS信道做添零处理。
综上所述， 本发明实施例提供的终端选择方法， 获取终端的信号参数， 根据信号参数检测该终端是否满足选择条件， 并将满足选择条件的终端添 加入协作多点传输 COMP协作终端集，解决了现有技术中在 SRS资源受限 的情况下将所有能够从 COMP服务中获得增益的终端都选择为接受 COMP 服务的终端， 从而严重影响系统性能的问题， 达到提高系统性能的目的； 其次， 本发明实施例提供的终端选择方法， 通过确定初始的协作终端集合 中各终端接受 COMP服务的优先级， 以便只为初始的协作终端集合中预定 个数的终端提供 COMP服务， 减少接受 COMP服务的终端的个数， 达到进 一步提高系统性能的同时， 简化系统复杂度； 最后， 本发明实施例提供的 终端选择方法， 通过对初始的协作终端集合中的终端进行更新， 达到进一 步提高系统性能的目的。 请参见图 3 ,其示出了本发明一个实施例提供的终端选择方法的方法流 程图。 该终端选择方法可以应用于终端中。 该终端选择方法可以包括： 步骤 302, 获取该终端的信号参数；
步骤 304, 将该信号参数发送给网络设备， 以便该网络设备在根据该信 号参数检测该终端满足选择条件后， 将该终端添加入该网络设备对应的小 区的协作多点传输 COMP协作终端集；
其中， 该网络设备对应的小区为协作多点传输 COMP协作小区集中的 一个小区， 且为该终端的服务小区。 综上所述， 本发明实施例提供的终端选择方法， 通过获取终端的信号 参数并发送给网络设备， 以便网络设备可以根据该信号参数检测是否将该 终端添加入该网络设备对应的小区的协作多点传输 COMP协作终端集， 解 决了现有技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得 增益的终端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问 题， 达到提高系统性能的目的。 基于上述图 3所示的终端选择方法的更为优选的方案，请参见图 4, 其 示出了本发明另一实施例提供的终端选择方法的方法流程图。 该终端选择 方法可以应用于终端， 比如移动通信终端中。 该终端选择方法可以包括： 步骤 402, 终端获取该终端的信号参数；
步骤 404, 终端将该信号参数发送给网络设备， 以便该网络设备在根据 该信号参数检测该终端满足选择条件后， 将该终端添加入该网络设备对应 的小区的协作多点传输 COMP协作终端集；
其中， 该网络设备对应的小区为协作多点传输 COMP协作小区集中的 一个小区， 且为该终端的服务小区。
该信号参数包括该终端接收到的信号强度、 该终端对应的下行参考信 号接收功率 RSRP或者该终端的信号质量指示符 CQI中的至少一种。
该终端接收到的信号强度包括： 该协作多点传输 COMP协作小区集中 的各个小区到达该终端的信号强度以及除该协作多点传输 COMP协作小区 集中的小区之外的所有小区到达该终端的信号强度。
该终端对应的下行参考信号接收功率 RSRP 包括： 该协作多点传输 COMP协作小区集内各个小区的下行参考信号接收功率 RSRP 以及该除该 协作多点传输 COMP协作小区集中的小区之外的所有小区的下行参考信号 接收功率 RSRP。
综上所述， 本发明实施例提供的终端选择方法， 通过获取终端的信号 参数并发送给网络设备， 以便网络设备可以根据该信号参数检测是否将该 终端添加入该网络设备对应的小区的协作多点传输 COMP协作终端集， 解 决了现有技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得 增益的终端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问 题， 达到提高系统性能的目的。 请参见图 5 , 其示出了本发明一个实施例提供的网络设备的设备构成 图。 该网络设备可以实现为基站或者基站的一部分。 该网络设备用于对应 维护协作多点传输 COMP协作小区集中的一个小区，该网络设备可以包括： 第一参数获取模块 501 , 用于获取终端的信号参数， 所述终端为所述网 络设备对应的小区当前服务的终端；
检测模块 502 ,用于根据所述第一参数获取模块 502获取到的所述信号 参数检测所述终端是否满足选择条件；
添加模块 503 ,用于若所述检测模块 502的检测结果为所述终端满足选 择条件， 则将所述终端添加入所述网络设备对应的小区的协作多点传输 COMP协作终端集。
综上所述， 本发明实施例提供的网络设备， 通过获取终端的信号参数， 根据信号参数检测该终端是否满足选择条件， 并将满足选择条件的终端添 加入协作多点传输 COMP协作终端集，解决了现有技术中在 SRS资源受限 的情况下将所有能够从 COMP服务中获得增益的终端都选择为接受 COMP 服务的终端， 从而严重影响系统性能的问题， 达到提高系统性能的目的。 基于上述图 5所示的网络设备的更为优选的方案， 请参见图 6, 其示出 了本发明另一实施例提供的网络设备的设备构成图。 该网络设备可以实现 为基站或者基站的一部分。 该网络设备用于对应维护协作多点传输 COMP 协作小区集中的一个小区， 该网络设备可以包括：
第一参数获取模块 601 , 用于获取终端的信号参数， 所述终端为所述网 络设备对应的小区当前服务的终端；
检测模块 602 ,用于根据所述第一参数获取模块 602获取到的所述信号 参数检测所述终端是否满足选择条件；
添加模块 603 ,用于若所述检测模块 602的检测结果为所述终端满足选 择条件， 则将所述终端添加入所述网络设备对应的小区的协作多点传输 COMP协作终端集。
所述第一参数获取模块 601 , 包括：
接收单元 601a, 用于接收所述终端发送的、 所述终端接收到的信号强 度、 所述终端对应的下行参考信号接收功率 RSRP或者所述终端的信号质 量指示符 CQI中的至少一种；
获取单元 601b , 用于获取所述终端对应的上行参考信号接收功率 RSRP;
其中， 所述信号参数包括所述终端接收到的信号强度、 所述终端对应 的参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少 一种； 所述终端对应的参考信号接收功率 RSRP 包括所述终端对应的下行 参考信号接收功率 RSRP 或者所述终端对应的上行参考信号接收功率 RSRP。
所述检测模块 602, 包括：
第一检测单元 602a, 用于当所述信号参数包括所述终端接收到的信号 强度时， 检测第一预定条件是否成立；
第一确定单元 602b,用于若所述第一检测单元 602a的检测结果为所述 第一预定条件成立， 则确定所述终端满足选择条件；
所述第一预定条件包括：
所述协作多点传输 COMP协作小区集中的各个小区到达所述终端的信 号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外的所有 小区到达所述终端的信号强度之和的比值不小于第一阔值；
和 /或，所述协作多点传输 COMP协作小区集中的各个小区到达所述终 端的信号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度之和的差不小于第二阔值；
其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
所述检测模块 602, 包括：
排序单元 602c, 用于当所述信号参数包括所述终端接收到的信号强度 时， 将所述协作多点传输 COMP协作小区集内各个小区到达所述终端的信 号强度按照从强到弱的顺序进行排序， 获得信号强度序列；
判断单元 602d, 用于判断所述信号强度序列中前 n位的信号强度之和 与所述除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到 达所述终端的信号强度之和的比值是否不小于第三阔值；
第二确定单元 602e, 用于若所述比值不小于所述第三阔值， 则确定所 述终端满足选择条件；
所述判断单元 602d, 用于若所述比值小于所述第三阔值， 则进一步判 断所述信号强度序列中前 n+1位的信号强度之和与所述除所述协作多点传 输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度之 和的比值是否不小于所述第三阔值；
所述协作多点传输 COMP协作小区集中的小区数为 m, K n < m-1 ; 其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集内各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
所述检测模块 602, 包括：
第二检测单元 602f, 用于当所述信号参数包括所述终端对应的参考信 号接收功率 RSRP时， 检测第二预定条件是否成立；
第三确定单元 602g, 用于若所述第二检测单元 602f的检测结果为所述 第二预定条件成立， 则确定所述终端满足选择条件；
所述第二预定条件包括：
所述协作多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值不小于第四阔值；
和 /或，所述协作多点传输 COMP协作小区集内各个小区的参考信号接 收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区 之外的所有小区的参考信号接收功率 RSRP之和的差不小于第五阔值； 和 /或， 所述网络设备对应的小区的参考信号接收功率 RSRP与所述协 作多点传输 COMP 协作小区集内其它任一相邻小区的参考信号接收功率 RSRP的差不大于第六阔值；
其中， 所述终端对应的参考信号接收功率 RSRP 包括： 所述协作多点 传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP以及所述除 所述协作多点传输 COMP协作小区集中的小区之外的所有小区的参考信号 接收功率 RSRP。
所述检测模块 602, 包括：
第三检测单元 602h, 用于当所述信号参数包括所述终端的信号质量指 示符 CQI时， 检测第三预定条件是否成立； 第四确定单元 602i, 用于若所述第三检测单元 602h的检测结果为所述 第三预定条件成立， 则确定所述终端满足选择条件；
所述第三预定条件包括：
所述终端的信号质量指示符 CQI不小于第七阔值。
所述网络设备还包括：
排序模块 604, 用于按照预定策略对所述协作多点传输 COMP协作终 端集中的各个终端进行排序， 获得终端序列；
确定模块 605, 用于将所述终端序列中的前 N个终端确定为优先接受 协作多点传输 COMP服务的终端， N为预先确定的正整数；
所述预定策略包括：
按照所述各个终端对应的、 所述协作多点传输 COMP协作小区集内各 个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的参考信号接收功率 RSRP之和的比 值从大到小的顺序进行排序；
或者， 按照所述各个终端对应的、 所述协作多点传输 COMP协作小区 集内除所述终端的服务小区之外的其它各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值从大到小的顺序进行排序； 或者， 按照所述各个终端预计接受所述协作多点传输 COMP协作小区 集中各小区的协作多点传输服务之后、信号与干扰和噪声比 SINR的提升量 从大到小的顺序进行排序。
所述网络设备还包括：
终端集获取模块 606, 用于获取所述协作多点传输 COMP协作小区集 中除所述网络设备对应的小区之外的其它小区的协作多点传输 COMP协作 终端集。
所述网络设备还包括：
资源分配模块 607, 用于为所述确定模块 605确定的 N个终端分配探 测参考信号 SRS资源；
第一删除模块 608, 用于将分配所述探测参考信号 SRS资源失败的终 端从所述协作多点传输 COMP协作终端集中删除。
所述网络设备还包括： 信道检测模块 609, 用于检测所述协作多点传输 COMP协作终端集中 各个终端的探测参考信号 SRS信道是否可靠；
第二删除模块 610, 用于将检测结果为不可靠的探测参考信号 SRS信 道所对应的终端从所述协作多点传输 COMP协作终端集中删除；
添零模块 611 , 用于对检测结果为不可靠的探测参考信号 SRS信道做 添零处理。
综上所述， 本发明实施例提供的网络设备， 获取终端的信号参数， 根 据信号参数检测该终端是否满足选择条件， 并将满足选择条件的终端添加 入协作多点传输 COMP协作终端集，解决了现有技术中在 SRS资源受限的 情况下将所有能够从 COMP服务中获得增益的终端都选择为接受 COMP服 务的终端， 从而严重影响系统性能的问题， 达到提高系统性能的目的； 其 次， 本发明实施例提供的网络设备， 通过确定初始的协作终端集合中各终 端接受 COMP服务的优先级， 以便只为初始的协作终端集合中预定个数的 终端提供 COMP服务， 减少接受 COMP服务的终端的个数， 达到进一步提 高系统性能的同时， 简化系统复杂度； 最后， 本发明实施例提供的网络设 备， 通过对初始的协作终端集合中的终端进行更新， 达到进一步提高系统 性能的目的。 请参见图 7 , 其示出了本发明一个实施例提供的网络设备的设备构成 图。 该网络设备可以实现为基站或者基站的一部分。 该网络设备用于对应 维护协作多点传输 COMP协作小区集中的一个小区，该网络设备可以包括： 处理器 701、 接收机 702和发射机 703；
处理器 701 , 用于通过接收机 702和发射机 703获取终端的信号参数， 所述终端为所述网络设备对应的小区当前服务的终端；
处理器 701 ,用于根据获取到的所述信号参数检测所述终端是否满足选 择条件；
处理器 701 , 用于若所述终端满足选择条件， 则将所述终端添加入所述 网络设备对应的小区的协作多点传输 COMP协作终端集。
综上所述， 本发明实施例提供的网络设备， 通过获取终端的信号参数， 根据信号参数检测该终端是否满足选择条件， 并将满足选择条件的终端添 加入协作多点传输 COMP协作终端集，解决了现有技术中在 SRS资源受限 的情况下将所有能够从 COMP服务中获得增益的终端都选择为接受 COMP 服务的终端， 从而严重影响系统性能的问题， 达到提高系统性能的目的。 基于上述图 7所示的网络设备的更为优选的方案， 请参见图 8, 其示出 了本发明另一实施例提供的网络设备的设备构成图。 该网络设备可以实现 为基站或者基站的一部分。 该网络设备用于对应维护协作多点传输 COMP 协作小区集中的一个小区， 该网络设备可以包括： 处理器 801、 接收机 802 和发射机 803;
处理器 801 , 用于控制接收机 802和发射机 803获取终端的信号参数， 所述终端为所述网络设备对应的小区当前服务的终端；
处理器 801 ,用于根据获取到的所述信号参数检测所述终端是否满足选 择条件；
处理器 801 , 用于若检测结果为所述终端满足选择条件， 则将所述终端 添加入所述网络设备对应的小区的协作多点传输 COMP协作终端集。
处理器 801 , 用于控制接收机 802和发射机 803接收所述终端发送的、 所述终端接收到的信号强度、所述终端对应的下行参考信号接收功率 RSRP 或者所述终端的信号质量指示符 CQI中的至少一种；
处理器 801 , 用于获取所述终端对应的上行参考信号接收功率 RSRP; 其中， 所述信号参数包括所述终端接收到的信号强度、 所述终端对应 的参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少 一种； 所述终端对应的参考信号接收功率 RSRP 包括所述终端对应的下行 参考信号接收功率 RSRP 或者所述终端对应的上行参考信号接收功率 RSRP。
处理器 801 , 用于当所述信号参数包括所述终端接收到的信号强度时， 检测第一预定条件是否成立； 若所述第一预定条件成立， 则确定所述终端 满足选择条件； 所述第一预定条件包括：
所述协作多点传输 COMP协作小区集中的各个小区到达所述终端的信 号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外的所有 小区到达所述终端的信号强度之和的比值不小于第一阔值；
和 /或，所述协作多点传输 COMP协作小区集中的各个小区到达所述终 端的信号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度之和的差不小于第二阔值；
其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
处理器 801 , 用于当所述信号参数包括所述终端接收到的信号强度时， 将所述协作多点传输 COMP协作小区集内各个小区到达所述终端的信号强 度按照从强到弱的顺序进行排序， 获得信号强度序列； 判断所述信号强度 序列中前 n位的信号强度之和与所述除所述协作多点传输 COMP协作小区 集中的小区之外的所有小区到达所述终端的信号强度之和的比值是否不小 于第三阔值； 若所述比值不小于所述第三阔值， 则确定所述终端满足选择 条件； 若所述比值小于所述第三阔值， 则进一步判断所述信号强度序列中 前 n+1位的信号强度之和与所述除所述协作多点传输 COMP协作小区集中 的小区之外的所有小区到达所述终端的信号强度之和的比值是否不小于所 述第三阔值； 所述协作多点传输 COMP协作小区集中的小区数为 m, K n < m-l ;
其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集内各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
处理器 801 ,用于当所述信号参数包括所述终端对应的参考信号接收功 率 RSRP 时， 检测第二预定条件是否成立； 若检测结果为所述第二预定条 件成立， 则确定所述终端满足选择条件； 所述第二预定条件包括：
所述协作多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值不小于第四阔值；
和 /或，所述协作多点传输 COMP协作小区集内各个小区的参考信号接 收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区 之外的所有小区的参考信号接收功率 RSRP之和的差不小于第五阔值； 和 /或， 所述网络设备对应的小区的参考信号接收功率 RSRP与所述协 作多点传输 COMP 协作小区集内其它任一相邻小区的参考信号接收功率 RSRP的差不大于第六阔值；
其中， 所述终端对应的参考信号接收功率 RSRP 包括： 所述协作多点 传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP以及所述除 所述协作多点传输 COMP协作小区集中的小区之外的所有小区的参考信号 接收功率 RSRP。
处理器 801 ,用于当所述信号参数包括所述终端的信号质量指示符 CQI 时， 检测第三预定条件是否成立； 若所述第三预定条件成立， 则确定所述 终端满足选择条件； 所述第三预定条件包括：
所述终端的信号质量指示符 CQI不小于第七阔值。
处理器 801 , 还用于按照预定策略对所述协作多点传输 COMP协作终 端集中的各个终端进行排序， 获得终端序列； 将所述终端序列中的前 N个 终端确定为优先接受协作多点传输 COMP服务的终端， N为预先确定的正 整数； 所述预定策略包括：
按照所述各个终端对应的、 所述协作多点传输 COMP协作小区集内各 个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的参考信号接收功率 RSRP之和的比 值从大到小的顺序进行排序；
或者， 按照所述各个终端对应的、 所述协作多点传输 COMP协作小区 集内除所述终端的服务小区之外的其它各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值从大到小的顺序进行排序； 或者， 按照所述各个终端预计接受所述协作多点传输 COMP协作小区 集中各小区的协作多点传输服务之后、信号与干扰和噪声比 SINR的提升量 从大到小的顺序进行排序。
处理器 801 ,用于控制接收机 802和发射机 803获取所述协作多点传输 COMP协作小区集中除所述网络设备对应的小区之外的其它小区的协作多 点传输 COMP协作终端集。
处理器 801 , 用于为所述确定模块 605确定的 N个终端分配探测参考 信号 SRS资源； 将分配所述探测参考信号 SRS资源失败的终端从所述协作 多点传输 COMP协作终端集中删除。
处理器 801 , 还用于检测所述协作多点传输 COMP协作终端集中各个 终端的探测参考信号 SRS信道是否可靠； 将检测结果为不可靠的探测参考 信号 SRS信道所对应的终端从所述协作多点传输 COMP协作终端集中删 除；
处理器 801 , 还用于对检测结果为不可靠的探测参考信号 SRS信道做 添零处理。
综上所述， 本发明实施例提供的网络设备， 获取终端的信号参数， 根 据信号参数检测该终端是否满足选择条件， 并将满足选择条件的终端添加 入协作多点传输 COMP协作终端集，解决了现有技术中在 SRS资源受限的 情况下将所有能够从 COMP服务中获得增益的终端都选择为接受 COMP服 务的终端， 从而严重影响系统性能的问题， 达到提高系统性能的目的； 其 次， 本发明实施例提供的网络设备， 通过确定初始的协作终端集合中各终 端接受 COMP服务的优先级， 以便只为初始的协作终端集合中预定个数的 终端提供 COMP服务， 减少接受 COMP服务的终端的个数， 达到进一步提 高系统性能的同时， 简化系统复杂度； 最后， 本发明实施例提供的网络设 备， 通过对初始的协作终端集合中的终端进行更新， 达到进一步提高系统 性能的目的。 请参见图 9, 其示出了本发明一个实施例提供的终端的设备构成图。 该 终端可以包括：
第二参数获取模块 901 , 用于获取所述终端的信号参数；
参数发送模块 902, 用于将所述信号参数发送给网络设备， 以便所述网 络设备在根据所述信号参数检测所述终端满足选择条件后， 将所述终端添 加入所述网络设备对应的小区的协作多点传输 COMP协作终端集；
其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
综上所述， 本发明实施例提供的终端， 通过获取终端的信号参数并发 送给网络设备， 以便网络设备可以根据该信号参数检测是否将该终端添加 入该网络设备对应的小区的协作多点传输 COMP协作终端集， 解决了现有 技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得增益的终 端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问题， 达到 提高系统性能的目的。 基于上述图 9所示的终端的更为优选的方案， 请参见图 10, 其示出了 本发明另一实施例提供的终端的设备构成图。 该终端可以包括：
第二参数获取模块 1001 , 用于获取所述终端的信号参数；
参数发送模块 1002, 用于将所述信号参数发送给网络设备， 以便所述 网络设备在根据所述信号参数检测所述终端满足选择条件后， 将所述终端 添加入所述网络设备对应的小区的协作多点传输 COMP协作终端集；
其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
所述信号参数包括所述终端接收到的信号强度、 所述终端对应的下行 参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少一 种。
所述终端接收到的信号强度包括： 所述协作多点传输 COMP协作小区 集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区到达所述终端的信号强度。
所述终端对应的下行参考信号接收功率 RSRP 包括： 所述协作多点传 输 COMP协作小区集内各个小区的下行参考信号接收功率 RSRP以及所述 除所述协作多点传输 COMP协作小区集中的小区之外的所有小区的下行参 考信号接收功率 RSRP。
综上所述， 本发明实施例提供的终端， 通过获取终端的信号参数并发 送给网络设备， 以便网络设备可以根据该信号参数检测是否将该终端添加 入该网络设备对应的小区的协作多点传输 COMP协作终端集， 解决了现有 技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得增益的终 端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问题， 达到 提高系统性能的目的。 请参见图 11 , 其示出了本发明一个实施例提供的终端的设备构成图。 该终端可以包括： 处理器 1101、 接收机 1102和发射机 1103;
处理器 1101 , 用于控制接收机 1102和发射机 1103获取所述终端的信 号参数；
发射机 1103 , 用于将所述信号参数发送给网络设备， 以便所述网络设 备在根据所述信号参数检测所述终端满足选择条件后 , 将所述终端添加入 所述网络设备对应的小区的协作多点传输 COMP协作终端集； 其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
综上所述， 本发明实施例提供的终端， 通过获取终端的信号参数并发 送给网络设备， 以便网络设备可以根据该信号参数检测是否将该终端添加 入该网络设备对应的小区的协作多点传输 COMP协作终端集， 解决了现有 技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得增益的终 端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问题， 达到 提高系统性能的目的。 基于上述图 11所示的终端的更为优选的方案， 请参见图 12, 其示出了 本发明另一实施例提供的终端的设备构成图。 该终端可以包括： 处理器 1201、 接收机 1202和发射机 1203;
处理器 1201 , 用于控制接收机 1202和发射机 1203获取所述终端的信 号参数；
发射机 1203 , 用于将所述信号参数发送给网络设备， 以便所述网络设 备在根据所述信号参数检测所述终端满足选择条件后 , 将所述终端添加入 所述网络设备对应的小区的协作多点传输 COMP协作终端集；
其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
所述信号参数包括所述终端接收到的信号强度、 所述终端对应的下行 参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少一 种。
所述终端接收到的信号强度包括： 所述协作多点传输 COMP协作小区 集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区到达所述终端的信号强度。
所述终端对应的下行参考信号接收功率 RSRP 包括： 所述协作多点传 输 COMP协作小区集内各个小区的下行参考信号接收功率 RSRP以及所述 除所述协作多点传输 COMP协作小区集中的小区之外的所有小区的下行参 考信号接收功率 RSRP。
综上所述， 本发明实施例提供的终端， 通过获取终端的信号参数并发 送给网络设备， 以便网络设备可以根据该信号参数检测是否将该终端添加 入该网络设备对应的小区的协作多点传输 COMP协作终端集， 解决了现有 技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得增益的终 端都选择为接受 COMP服务的终端， 从而严重影响系统性能的问题， 达到 提高系统性能的目的。 请参见图 13 , 其示出了本发明一个实施例提供的终端选择系统的系统 构成图。 该终端选择系统可以包括如上述图 5至图 8任一所示的网络设备 001以及如上述图 9至图 12任一所示的终端 002。
综上所述， 本发明实施例提供的终端选择系统， 网络设备获取终端的 信号参数， 根据信号参数检测该终端是否满足选择条件， 并将满足选择条 件的终端添加入协作多点传输 COMP 协作终端集， 解决了现有技术中在 SRS资源受限的情况下将所有能够从 COMP服务中获得增益的终端都选择 为接受 COMP服务的终端， 从而严重影响系统性能的问题， 达到提高系统 性能的目的； 其次， 本发明实施例提供的终端选择系统， 网络设备通过确 定初始的协作终端集合中各终端接受 COMP服务的优先级， 以便只为初始 的协作终端集合中预定个数的终端提供 COMP服务，减少接受 COMP服务 的终端的个数， 达到进一步提高系统性能的同时， 简化系统复杂度； 最后， 本发明实施例提供的终端选择系统， 网络设备通过对初始的协作终端集合 中的终端进行更新， 达到进一步提高系统性能的目的。 需要说明的是： 上述实施例提供的网络设备和终端在进行终端的选择 时， 仅以上述各功能模块的划分进行举例说明， 实际应用中， 可以根据需 要而将上述功能分配由不同的功能模块完成， 即将设备的内部结构划分成 不同的功能模块， 以完成以上描述的全部或者部分功能。 另外， 上述实施 例提供的网络设备和终端与终端选择方法实施例属于同一构思， 其具体实 现过程详见方法实施例， 这里不再赘述。
上述本发明实施例序号仅仅为了描述， 不代表实施例的优劣。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以 通过硬件来完成， 也可以通过程序来指令相关的硬件完成， 所述的程序可 以存储于一种计算机可读存储介质中， 上述提到的存储介质可以是只读存 储器， 磁盘或光盘等。 以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发 明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在 本发明的保护范围之内。

Claims

权利要求
1、 一种终端选择方法， 用于网络设备中， 所述网络设备用于对应维护 协作多点传输 COMP协作小区集中的一个小区， 其特征在于， 所述方法包 括：
获取终端的信号参数， 所述终端为所述网络设备对应的小区当前服务 的终端；
根据获取到的所述信号参数检测所述终端是否满足选择条件； 若检测结果为所述终端满足选择条件， 则将所述终端添加入所述网络 设备对应的小区的协作多点传输 COMP协作终端集。
2、 根据权利要求 1所述的方法， 其特征在于， 所述信号参数包括所述 终端接收到的信号强度、 所述终端对应的参考信号接收功率 RSRP或者所 述终端的信号质量指示符 CQI中的至少一种； 所述终端对应的参考信号接 收功率 RSRP包括所述终端对应的下行参考信号接收功率 RSRP或者所述终 端对应的上行参考信号接收功率 RSRP;
所述获取终端的信号参数， 包括：
接收所述终端发送的所述终端接收到的信号强度、 所述终端对应的下 行参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少 一种；
或者,
获取所述终端对应的上行参考信号接收功率 RSRP。
3、 根据权利要求 2所述的方法， 其特征在于， 所述终端接收到的信号 强度包括： 所述协作多点传输 COMP协作小区集中的各个小区到达所述终 端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区到达所述终端的信号强度；
当所述信号参数包括所述终端接收到的信号强度时， 所述根据获取到 的所述信号参数检测所述终端是否满足选择条件， 包括：
检测第一预定条件是否成立； 若所述第一预定条件成立， 则确定所述终端满足选择条件；
其中， 所述第一预定条件包括：
所述协作多点传输 COMP协作小区集中的各个小区到达所述终端的信 号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外的所有 小区到达所述终端的信号强度之和的比值不小于第一阔值；
和 /或，所述协作多点传输 COMP协作小区集中的各个小区到达所述终 端的信号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度之和的差不小于第二阔值。
4、 根据权利要求 2所述的方法， 其特征在于， 所述终端接收到的信号 强度包括： 所述协作多点传输 COMP协作小区集内各个小区到达所述终端 的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所 有小区到达所述终端的信号强度；
当所述信号参数包括所述终端接收到的信号强度时， 所述根据获取到 的所述信号参数检测所述终端是否满足选择条件， 包括：
将所述协作多点传输 COMP协作小区集内各个小区到达所述终端的信 号强度按照从强到弱的顺序进行排序， 获得信号强度序列；
判断所述信号强度序列中前 n位的信号强度之和与所述除所述协作多 点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强 度之和的比值是否不小于第三阔值；
若所述比值不小于所述第三阔值， 则确定所述终端满足选择条件； 若所述比值小于所述第三阔值， 则进一步判断所述信号强度序列中前 n+1位的信号强度之和与所述除所述协作多点传输 COMP协作小区集中的 小区之外的所有小区到达所述终端的信号强度之和的比值是否不小于所述 第三阔值；
其中， 所述协作多点传输 COMP协作小区集中的小区数为 m, K n < m-1。
5、 根据权利要求 2所述的方法， 其特征在于， 所述终端对应的参考信 号接收功率 RSRP包括： 所述协作多点传输 COMP协作小区集内各个小区 的参考信号接收功率 RSRP以及所述除所述协作多点传输 COMP协作小区 集中的小区之外的所有小区的参考信号接收功率 RSRP;
当所述信号参数包括所述终端对应的参考信号接收功率 RSRP 时， 所 述根据获取到的所述信号参数检测所述终端是否满足选择条件， 包括： 检测第二预定条件是否成立；
若所述第二预定条件成立， 则确定所述终端满足选择条件；
其中， 所述第二预定条件包括：
所述协作多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值不小于第四阔值；
和 /或，所述协作多点传输 COMP协作小区集内各个小区的参考信号接 收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区 之外的所有小区的参考信号接收功率 RSRP之和的差不小于第五阔值； 和 /或， 所述网络设备对应的小区的参考信号接收功率 RSRP与所述协 作多点传输 COMP 协作小区集内其它任一相邻小区的参考信号接收功率 RSRP的差不大于第六阔值。
6、 根据权利要求 2所述的方法， 其特征在于， 当所述信号参数包括所 述终端的信号质量指示符 CQI时， 所述根据获取到的所述信号参数检测所 述终端是否满足选择条件， 包括：
检测第三预定条件是否成立；
若所述第三预定条件成立， 则确定所述终端满足选择条件；
其中， 所述第三预定条件包括：
所述终端的信号质量指示符 CQI不小于第七阔值。
7、 根据权利要求 1至 6任一所述的方法， 其特征在于， 所述将所述终 端添加入所述网络设备对应的小区的协作多点传输 COMP 协作终端集之 后， 还包括：
按照预定策略对所述协作多点传输 COMP协作终端集中的各个终端进 行排序， 获得终端序列；
将所述终端序列中的前 N个终端确定为接受协作多点传输 COMP服务 的终端， N为预先确定的正整数； 所述预定策略包括：
按照所述各个终端对应的、 所述协作多点传输 COMP协作小区集内各 个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的参考信号接收功率 RSRP之和的比 值从大到小的顺序进行排序；
或者， 按照所述各个终端对应的、 所述协作多点传输 COMP协作小区 集内除所述终端的服务小区之外的其它各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值从大到小的顺序进行排序； 或者， 按照所述各个终端预计接受所述协作多点传输 COMP协作小区 集中各小区的协作多点传输服务之后、信号与干扰和噪声比 SINR的提升量 从大到小的顺序进行排序。
8、 根据权利要求 7所述的方法， 其特征在于， 所述将所述终端添加入 所述网络设备对应的小区的协作多点传输 COMP协作终端集之后，还包括： 获取所述协作多点传输 COMP协作小区集中除所述网络设备对应的小 区之外的其它小区的协作多点传输 COMP协作终端集。
9、 根据权利要求 7所述的方法， 其特征在于， 所述将所述终端序列中 的前 N个终端确定为接受协作多点传输 COMP服务的终端之后， 还包括： 为确定的所述 N个终端分配探测参考信号 SRS资源；
将分配所述探测参考信号 SRS 资源失败的终端从所述协作多点传输 COMP协作终端集中删除。
10、 根据权利要求 7 所述的方法， 其特征在于， 所述将所述终端序列 中的前 N个终端确定为接受协作多点传输 COMP服务的终端之后，还包括： 检测所述协作多点传输 COMP协作终端集中各个终端的探测参考信号 SRS信道是否可靠；
将检测结果为不可靠的探测参考信号 SRS信道所对应的终端从所述协 作多点传输 COMP协作终端集中删除， 或者， 对检测结果为不可靠的探测 参考信号 SRS信道做添零处理。
11、 一种终端选择方法， 用于终端中， 其特征在于， 所述方法包括： 获取所述终端的信号参数；
将所述信号参数发送给网络设备， 以便所述网络设备在根据所述信号 参数检测所述终端满足选择条件后， 将所述终端添加入所述网络设备对应 的小区的协作多点传输 COMP协作终端集；
其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
12、 根据权利要求 11所述的方法， 其特征在于， 所述信号参数包括所 述终端接收到的信号强度、 所述终端对应的下行参考信号接收功率 RSRP 或者所述终端的信号质量指示符 CQI中的至少一种。
13、 根据权利要求 12所述的方法， 其特征在于， 所述终端接收到的信 号强度包括： 所述协作多点传输 COMP协作小区集中的各个小区到达所述 终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度。
14、 根据权利要求 12所述的方法， 其特征在于， 所述终端对应的下行 参考信号接收功率 RSRP包括： 所述协作多点传输 COMP协作小区集内各 个小区的下行参考信号接收功率 RSRP 以及所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的下行参考信号接收功率 RSRP。
15、 一种网络设备， 所述网络设备用于对应维护协作多点传输 COMP 协作小区集中的一个小区， 其特征在于， 所述网络设备包括：
第一参数获取模块， 用于获取终端的信号参数， 所述终端为所述网络 设备对应的小区当前服务的终端；
检测模块， 用于根据所述第一参数获取模块获取到的所述信号参数检 测所述终端是否满足选择条件；
添加模块， 用于若所述检测模块的检测结果为所述终端满足选择条件， 则将所述终端添加入所述网络设备对应的小区的协作多点传输 COMP协作 终端集。
16、 根据权利要求 15所述的网络设备， 其特征在于， 所述第一参数获 取模块， 包括：
接收单元， 用于接收所述终端发送的、 所述终端接收到的信号强度、 所述终端对应的下行参考信号接收功率 RSRP或者所述终端的信号质量指 示符 CQI中的至少一种；
获取单元， 用于获取所述终端对应的上行参考信号接收功率 RSRP; 其中， 所述信号参数包括所述终端接收到的信号强度、 所述终端对应 的参考信号接收功率 RSRP或者所述终端的信号质量指示符 CQI中的至少 一种； 所述终端对应的参考信号接收功率 RSRP 包括所述终端对应的下行 参考信号接收功率 RSRP 或者所述终端对应的上行参考信号接收功率 RSRP。
17、 根据权利要求 16所述的网络设备， 其特征在于， 所述检测模块， 包括：
第一检测单元， 用于当所述信号参数包括所述终端接收到的信号强度 时， 检测第一预定条件是否成立；
第一确定单元， 用于若所述第一检测单元的检测结果为所述第一预定 条件成立， 则确定所述终端满足选择条件；
所述第一预定条件包括：
所述协作多点传输 COMP协作小区集中的各个小区到达所述终端的信 号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外的所有 小区到达所述终端的信号强度之和的比值不小于第一阔值；
和 /或，所述协作多点传输 COMP协作小区集中的各个小区到达所述终 端的信号强度之和与除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度之和的差不小于第二阔值；
其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集中的各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
18、 根据权利要求 16所述的网络设备， 其特征在于， 所述检测模块， 包括：
排序单元， 用于当所述信号参数包括所述终端接收到的信号强度时， 将所述协作多点传输 COMP协作小区集内各个小区到达所述终端的信号强 度按照从强到弱的顺序进行排序， 获得信号强度序列；
判断单元， 用于判断所述信号强度序列中前 n位的信号强度之和与所 述除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所 述终端的信号强度之和的比值是否不小于第三阔值；
第二确定单元， 用于若所述比值不小于所述第三阔值， 则确定所述终 端满足选择条件；
所述判断单元， 用于若所述比值小于所述第三阔值， 则进一步判断所 述信号强度序列中前 n+1 位的信号强度之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度之和 的比值是否不小于所述第三阔值；
所述协作多点传输 COMP协作小区集中的小区数为 m, K n < m-1 ; 其中， 所述终端接收到的信号强度包括： 所述协作多点传输 COMP协 作小区集内各个小区到达所述终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外的所有小区到达所述终端的信号强度。
19、 根据权利要求 16所述的网络设备， 其特征在于， 所述检测模块， 包括：
第二检测单元， 用于当所述信号参数包括所述终端对应的参考信号接 收功率 RSRP时， 检测第二预定条件是否成立；
第三确定单元， 用于若所述第二检测单元的检测结果为所述第二预定 条件成立， 则确定所述终端满足选择条件；
所述第二预定条件包括：
所述协作多点传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值不小于第四阔值；
和 /或，所述协作多点传输 COMP协作小区集内各个小区的参考信号接 收功率 RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区 之外的所有小区的参考信号接收功率 RSRP之和的差不小于第五阔值； 和 /或， 所述网络设备对应的小区的参考信号接收功率 RSRP与所述协 作多点传输 COMP 协作小区集内其它任一相邻小区的参考信号接收功率 RSRP的差不大于第六阔值；
其中， 所述终端对应的参考信号接收功率 RSRP 包括： 所述协作多点 传输 COMP协作小区集内各个小区的参考信号接收功率 RSRP以及所述除 所述协作多点传输 COMP协作小区集中的小区之外的所有小区的参考信号 接收功率 RSRP。
20、 根据权利要求 16所述的网络设备， 其特征在于， 所述检测模块， 包括：
第三检测单元， 用于当所述信号参数包括所述终端的信号质量指示符 CQI时， 检测第三预定条件是否成立；
第四确定单元， 用于若所述第三检测单元的检测结果为所述第三预定 条件成立， 则确定所述终端满足选择条件；
所述第三预定条件包括：
所述终端的信号质量指示符 CQI不小于第七阔值。
21、 根据权利要求 15至 20任一所述的网络设备， 其特征在于， 所述 网络设备还包括：
排序模块， 用于按照预定策略对所述协作多点传输 COMP协作终端集 中的各个终端进行排序， 获得终端序列；
确定模块， 用于将所述终端序列中的前 N个终端确定为优先接受协作 多点传输 COMP服务的终端， N为预先确定的正整数；
所述预定策略包括：
按照所述各个终端对应的、 所述协作多点传输 COMP协作小区集内各 个小区的参考信号接收功率 RSRP之和与所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的参考信号接收功率 RSRP之和的比 值从大到小的顺序进行排序；
或者， 按照所述各个终端对应的、 所述协作多点传输 COMP协作小区 集内除所述终端的服务小区之外的其它各个小区的参考信号接收功率
RSRP之和与所述除所述协作多点传输 COMP协作小区集中的小区之外的 所有小区的参考信号接收功率 RSRP之和的比值从大到小的顺序进行排序； 或者， 按照所述各个终端预计接受所述协作多点传输 COMP协作小区 集中各小区的协作多点传输服务之后、信号与干扰和噪声比 SINR的提升量 从大到小的顺序进行排序。
22、 根据权利要求 21所述的网络设备， 其特征在于， 所述网络设备还 包括：
终端集获取模块， 用于获取所述协作多点传输 COMP协作小区集中除 所述网络设备对应的小区之外的其它小区的协作多点传输 COMP协作终端
23、 根据权利要求 21所述的网络设备， 其特征在于， 所述网络设备还 包括：
资源分配模块， 用于为所述确定模块确定的 N个终端分配探测参考信 号 SRS资源；
第一删除模块， 用于将分配所述探测参考信号 SRS资源失败的终端从 所述协作多点传输 COMP协作终端集中删除。
24、 根据权利要求 21所述的网络设备， 其特征在于， 所述网络设备还 包括：
信道检测模块， 用于检测所述协作多点传输 COMP协作终端集中各个 终端的探测参考信号 SRS信道是否可靠；
第二删除模块， 用于将检测结果为不可靠的探测参考信号 SRS信道所 对应的终端从所述协作多点传输 COMP协作终端集中删除；
添零模块， 用于对检测结果为不可靠的探测参考信号 SRS信道做添零 处理。
25、 一种终端， 其特征在于， 所述终端包括：
第二参数获取模块， 用于获取所述终端的信号参数； 参数发送模块， 用于将所述信号参数发送给网络设备， 以便所述网络 设备在根据所述信号参数检测所述终端满足选择条件后， 将所述终端添加 入所述网络设备对应的小区的协作多点传输 COMP协作终端集；
其中， 所述网络设备对应的小区为协作多点传输 COMP协作小区集中 的一个小区， 且为所述终端的服务小区。
26、 根据权利要求 25所述的终端， 其特征在于， 所述信号参数包括所 述终端接收到的信号强度、 所述终端对应的下行参考信号接收功率 RSRP 或者所述终端的信号质量指示符 CQI中的至少一种。
27、 根据权利要求 26所述的终端， 其特征在于， 所述终端接收到的信 号强度包括： 所述协作多点传输 COMP协作小区集中的各个小区到达所述 终端的信号强度以及除所述协作多点传输 COMP协作小区集中的小区之外 的所有小区到达所述终端的信号强度。
28、 根据权利要求 26所述的终端， 其特征在于， 所述终端对应的下行 参考信号接收功率 RSRP包括： 所述协作多点传输 COMP协作小区集内各 个小区的下行参考信号接收功率 RSRP 以及所述除所述协作多点传输 COMP 协作小区集中的小区之外的所有小区的下行参考信号接收功率 RSRP。
29、 一种选择终端的系统， 其特征在于， 所述系统包括：
如权利要求 15-24任一所述的网络设备以及如权利要求 25-28任一所述 的终端。
PCT/CN2014/084078 2013-08-09 2014-08-11 终端选择方法、网络设备、终端及系统 WO2015018374A1 (zh)

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