WO2014187337A1 - 一种信道质量指示的调整方法及基站 - Google Patents

一种信道质量指示的调整方法及基站 Download PDF

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Publication number
WO2014187337A1
WO2014187337A1 PCT/CN2014/078115 CN2014078115W WO2014187337A1 WO 2014187337 A1 WO2014187337 A1 WO 2014187337A1 CN 2014078115 W CN2014078115 W CN 2014078115W WO 2014187337 A1 WO2014187337 A1 WO 2014187337A1
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WO
WIPO (PCT)
Prior art keywords
cqi
compensation amount
change information
user equipment
state
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PCT/CN2014/078115
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English (en)
French (fr)
Inventor
叶枫
王擘
刘崇利
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2014187337A1 publication Critical patent/WO2014187337A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters
    • H04B17/345Interference values
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the user equipment in the process of the user equipment communicating with the base station, the user equipment usually periodically reports a channel quality indicator (CQI), which indicates that the base station is the downlink of the user equipment.
  • CQI channel quality indicator
  • the CQI reported by the user equipment is mapped based on the average SINR obtained by combining the signal of each subband with the signal to interference plus noise ratio (SINR) measurement.
  • SINR signal to interference plus noise ratio
  • the base station directs the user equipment to schedule and transmit data on the undisturbed spectrum resource according to the CQI reported by the user equipment, the data transmission throughput is low, and the user equipment is scheduled to be scheduled on the interfered shared spectrum resource according to the CQI.
  • the success rate of data transmission will be reduced. Therefore, in the existing network resource sharing system, the CQI reported by the user equipment cannot correctly guide the scheduling and data transmission of the user equipment on the downlink resources (that is, the network resources from the base station to the user equipment).
  • the embodiments of the present invention provide a method for adjusting a channel quality indicator and a base station, so that in a network resource sharing system, the adjusted channel quality indicator can correctly guide the user equipment on the downlink resource. Scheduling and data transfer.
  • a first aspect of the embodiments of the present invention provides a method for adjusting a channel quality indicator, including: determining, on a shared resource of a first communication system and a second communication system, a state change of a first communication system signal interfered by a signal of a second communication system Information, the state change information is a first change information that jumps from an undisturbed state to an interfered state, or a second change information that is jumped from an interfered state to an undisturbed state;
  • the CQI reported by the user equipment is compensated according to the adjusted uplink step or the adjusted step.
  • the step of adjusting the channel quality indicator CQI, the step of adjusting the step size or the step of reducing the step according to the state change information specifically includes:
  • the state change information is the second change information
  • the down step size of the compensation amount of the CQI is raised.
  • the method further includes:
  • the adjusted step-up step is returned to the initial step-up step;
  • the first adjustment-return condition of the step-up step includes: When the transmitted block error rate reaches the target value; or, after the CQI is compensated, when the first negative acknowledgement information for the downlink data fed back by the user equipment is received;
  • the CQI reported by the user equipment is compensated according to the initial step-up step.
  • the method further includes:
  • the adjusted down-step step is returned to the initial down-step step;
  • the second adjustment back-off condition of the down-conversion step specifically includes: when the block error rate of the downlink transmission reaches the target value; or, after the CQI is compensated, receiving the feedback for the downlink data by the user equipment When a positive response message; The CQI reported by the user equipment is compensated according to the initial downward adjustment step.
  • a second aspect of the embodiments of the present invention provides a base station, including:
  • a first determining unit configured to determine state change information of the first communication system signal interfered by the signal of the second communication system on the shared resource of the first communication system and the second communication system, where the state change information is never interfered
  • the state transition is the first change information of the interfered state, or the second change information that is transitioned from the interfered state to the undisturbed state
  • a step adjustment unit configured to adjust an adjustment step or a down step of the compensation amount of the channel quality indicator CQI according to the state change information determined by the first decision unit;
  • the first CQI compensation unit is configured to compensate the CQI reported by the user equipment according to the adjusted step size of the step adjustment unit or the adjusted step size.
  • the step adjustment unit specifically includes:
  • a first step adjustment unit configured to: when the state change information that is determined by the first determining unit is the first change information, increase an upward adjustment step of the compensation amount of the CQI;
  • a second step adjustment unit configured to: when the state change information that is determined by the first determining unit is the second change information, increase a down step of the compensation amount of the CQI.
  • the base station further includes:
  • Adjusting the back-off unit if the first adjusted back-off condition of the step-up step is satisfied, returning the adjusted step-up step to an initial step-up step; and adjusting the first step of the step-up step
  • the retreating condition specifically includes: when the block error rate of the downlink transmission reaches the target value; or, when the CQI is compensated, receiving the first negative response information for the downlink data fed back by the user equipment;
  • the second CQI compensation unit is configured to compensate the CQI reported by the user equipment according to the initial uplink step obtained after the back-off unit is retracted.
  • the adjustment back-off unit is further configured to: if the second adjustment back-off condition of the down-step step is met, return the adjusted down-step step to an initial down-step step;
  • the second adjustment of the fallback condition specifically includes: when the block error rate of the downlink transmission reaches the target value; or, after compensating the CQI, receiving the first acknowledgement of the downlink data that is fed back by the user equipment When responding to information;
  • the second CQI compensation unit is further configured to compensate the CQI reported by the user equipment according to the initial downward adjustment step obtained after the back rollback unit is retracted.
  • the base station adjusts the step-up or down-step of the compensation amount of the CQI according to the state change information of the first communication system signal interfered by the signal of the second communication system on the shared resources of the first communication system and the second communication system. Long, thus adjusting the CQI in one step.
  • the process of CQI adjustment considering the interference of one system signal to another system signal in the network resource sharing system, and quickly adjusting the compensation amount according to the state change information of the signal interference, this can compensate for the signal interference state.
  • the impact of the change on the channel quality, and then the CQI obtained according to the compensation amount is closer to the actual channel quality, and the adjusted channel quality indication can correctly guide the scheduling and data transmission of the user equipment on the downlink resources.
  • a third aspect of the embodiments of the present invention provides a method for adjusting a channel quality indicator, including: determining a state in which a signal of a first communication system is interfered by a signal of a second communication system on a shared resource of the first communication system and the second communication system Change information, the state change information is a first change information that jumps from an undisturbed state to an interfered state, or a second change information that is jumped from an interfered state to an undisturbed state;
  • the state change information is the first change information, respectively determining a first compensation amount of the channel quality indicator CQI on the shared resource and a second of the CQI on the exclusive resource of the first communication system Compensation amount;
  • the second compensation amount includes:
  • the determining, by the channel quality indicator CQI, the first compensation amount on the shared resource and the CQI are respectively
  • the second compensation amount on the exclusive resource of the first communication system specifically includes: acquiring, by the user equipment, the CQIs on the respective sub-bands included in the shared resource and the exclusive resource;
  • the maximum value of C Q I on each sub-band included in the exclusive resource fed back by the user equipment is used as the second compensation amount.
  • a fourth aspect of the embodiments of the present invention provides a base station, including:
  • a second determining unit configured to determine state change information of the first communication system signal interfered by the signal of the second communication system on the shared resource of the first communication system and the second communication system, where the state change information is never received
  • the interference state jumps to the first change information of the interfered state, or the second change information that is jumped from the interfered state to the undisturbed state;
  • a compensation amount obtaining unit configured to determine, when the state change information determined by the second determining unit is the first change information, a first compensation amount of the channel quality indicator CQI on the shared resource and the CQI a second amount of compensation on the exclusive resource of the first communication system;
  • a compensation unit configured to compensate a CQI reported by the user equipment according to the first compensation amount acquired by the compensation amount acquiring unit to obtain a CQI on the shared resource, and compensate the CQI reported by the user equipment according to the second compensation amount to obtain exclusive CQI on resources.
  • the compensation quantity acquiring unit specifically includes:
  • a sub-band CQI acquiring unit configured to separately acquire, from the user equipment, C Q I on each of the shared sub-bands included in the shared resource and the exclusive resource;
  • a first compensation determining unit configured to use, as the first compensation amount, an average value of CQIs on each subband included in the shared resource acquired by the subband CQI acquiring unit, or a weighted average value;
  • a second compensation determining unit configured to use, as the second compensation amount, an average value of the CQIs on the respective sub-bands included in the exclusive resource acquired by the sub-band CQI acquiring unit, or a weighted average value.
  • a first possible implementation manner of the fourth aspect of the embodiments of the present invention is implemented in the present invention.
  • a second possible implementation of the fourth aspect of the example is implemented in the present invention.
  • the first compensation determining unit is further configured to use, as the first compensation amount, a maximum value of CQIs on each subband included in the shared resource that is fed back by the user equipment;
  • the second compensation determining unit is further configured to use, as the second compensation amount, a maximum value of CQIs on each subband included in the exclusive resource fed back by the user equipment.
  • the state change information of the first communication system signal interfered by the signal of the second communication system is the first change information, that is, the transition from the undisturbed state to the In the interfered state
  • the base station determines a first compensation amount of the CQI on the shared resource and a second compensation amount of the CQI on the exclusive resource of the first communication system, and then compensates the user equipment according to the first compensation amount and the second compensation amount.
  • the reported CQI obtains the CQI on the shared resource and the exclusive resource respectively.
  • FIG. 1 is a flow chart of a method for adjusting a channel quality indicator according to Embodiment 1 of the method of the present invention
  • FIG. 2 is a flowchart of another method for adjusting a channel quality indicator according to Embodiment 1 of the present invention.
  • FIG. 3 is a flow chart of a method for adjusting a channel quality indicator according to Embodiment 2 of the method of the present invention.
  • FIG. 4 is a schematic structural diagram of exclusive resources and shared resources described in Embodiment 2 of the method of the present invention
  • 5 is a schematic structural diagram of a base station according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of another base station according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the device of the present invention.
  • FIG. 9 is a schematic structural diagram of another base station according to an embodiment of the apparatus of the present invention.
  • a method for adjusting a channel quality indicator is mainly provided for a system in which a plurality of communication systems can share network resources, such as a network resource sharing system of GSM and LTE, etc.
  • the method in this embodiment is performed by a base station in the first communication system.
  • the method of the first communication system may be an LTE system, and the second communication system may be a GSM system.
  • the flowchart of the method in the embodiment of the present invention is as shown in FIG. 1 , and includes:
  • Step 101 Determine, on a shared resource of the first communication system and the second communication system, that the first communication system signal is interfered with by the second communication system signal, and the state change information may be an uninterrupted state transition to The first change information of the interfered state, or the second change information from the interfered state to the undisturbed state.
  • the state change of the first communication system signal interfered by the signal of the second communication system may be a state in which the first communication system is interfered as a whole, or may be an interference state that the user equipment is subjected to.
  • the base station can determine the interference of the signal received by the second communication system by using an uplink thermal noise uplift (IoT) detection, or an uplink initial error block rate (IBLER) statistics, etc., and specifically determining the interference signal (including The interference of the adjacent channel leakage noise of the second communication system signal appears on which resource blocks (Resource Blocks, BRs), so that the base station can perform corresponding scheduling, and preferentially schedule the user equipments on the resources without interference.
  • IoT uplink thermal noise uplift
  • IBLER uplink initial error block rate
  • Step 102 Adjust channel quality indicator CQI according to the state change information determined in step 101.
  • the up-step step or the down-step size ⁇ of the compensation amount ⁇ specifically, when the state change information is the first change information, the step-up step of increasing the compensation amount of the CQI is performed without changing the step-down step; when the state change information is When the second change information is used, the downward adjustment step size of the compensation amount of the CQI is raised, and the average SINR mapping obtained by combining the CINRs reported by the user equipment according to the SINR measurement values of the sub-bands is changed, and the interference is caused.
  • the corresponding SINR on the resource will be lower than the corresponding SINR value on the undisturbed resource.
  • the average SINR obtained is biased. If the compensation step is adjusted by using the up-step step size without interference, and the CQI obtained according to the adjusted compensation amount is deviated from the actual channel quality, that is, the CQI is required to be offset. Elevation; When on the shared resource, when jumping from the interfered state to the undisturbed state, the average SINR obtained is too high, if the offset step is used to adjust the offset Eventually a certain deviation from the actual CQI channel quality obtained compensation amount adjustment, i.e. high, the amount of compensation required CQI lift decrement step size.
  • Step 103 Perform compensation on the CQI reported by the user equipment according to the adjusted uplink step or the adjusted step, and then the base station may perform scheduling and data transmission on the spectrum resource guided by the compensated CQI.
  • the user equipment has a certain delay in reporting the CQI, such as the CQI from the measurement to the reported delay and the delay from the reporting time to the scheduling time, and the CQI and the actual channel status reported by the user equipment. There is still some error.
  • the base station needs to adjust the CQI reported by the user equipment, and specifically compensates the reported CQI by using an Outer Loop Link Adaptation (OLLA) method, mainly by using the user equipment to correctly transmit the downlink.
  • OLLA Outer Loop Link Adaptation
  • the CQI is adjusted, and the user equipment can feed back the acknowledgement (ACK) information to the base station when receiving the downlink transmission correctly, and can feed the Negative Acknowledgement (NACK) information to the base station when the downlink transmission is not correctly received.
  • ACK acknowledgement
  • NACK Negative Acknowledgement
  • the base station sets a CQI compensation amount ⁇ .
  • the base station receives the ACK fed back by the user equipment, indicating that the actual channel quality is good, the CQI reporting value is too conservative, and the CQI needs to be improved, then the basis of the compensation amount ⁇ An upper adjustment step is added.
  • the base station receives the NACK fed back by the user equipment, indicating that the actual channel quality is degraded, the reported value of the CQI is too high, and the CQI needs to be lowered, and the compensation amount ⁇ is used .
  • the amount of compensation can finally converge the block error ratio (BLER) of the downlink transmission to the target value.
  • BLER block error ratio
  • the step size when the signal interference state changes, the step size can be increased or the step size can be adjusted accordingly. , so that the BLER can converge quickly, making up for the impact on the channel quality when the signal interference state changes.
  • the relationship between the up step size ⁇ and the down step size of the B ⁇ and the target value of the BLER is: , BLE ⁇ , where is the target value of the BLER.
  • the valid CQI finally obtained is: the sum of the reported CQI and the adjusted compensation amount
  • the base station adjusts the compensation amount of the CQI according to the state change information of the first communication system signal interfered by the signal of the second communication system on the shared resources of the first communication system and the second communication system. Adjust the step size or down the step size to adjust the CQI step by step.
  • the compensation amount considering the interference of one system signal to another system signal in the network resource sharing system, and quickly adjusting the compensation amount according to the state change information of the signal interference, this can compensate for the signal interference state.
  • the impact of the change on the channel quality, and then the CQI obtained according to the compensation amount is closer to the actual channel quality, and the adjusted channel quality indication can correctly guide the scheduling and data transmission of the user equipment on the downlink resources.
  • the base station may guide the adjustment of the CQI by the state change information of the first communication system signal interfered by the signal of the second communication system, when the state of the signal interference is from one state to another state.
  • the base station can also perform the following steps. The process is as shown in FIG. 2, and specifically includes:
  • the base station can quickly converge the BLER by increasing the up-step step.
  • the base station can also perform the following step 104a. And 105a:
  • step 104a if the first adjustment back-off condition of the up-step step is satisfied, the adjusted step-up step is returned to the initial step-up step.
  • the first adjustment backoff condition may include, but is not limited to, any one of the following information: when the block error rate of the downlink transmission (ie, the above-mentioned £ ⁇ g) reaches the target value; when the CQI is compensated by the above step 103, when received When the user equipment feeds back the first negative response information for the downlink data, and the like.
  • Step 105a Compensate for the CQI reported by the user equipment according to the initial step-up step.
  • the base station can quickly adjust the BLER by increasing the down-step step.
  • the base station can also To perform the following steps 104b and 105b:
  • step 104b if the second adjustment backoff condition of the down step is satisfied, the adjusted down step is returned to the initial down step.
  • the second adjustment backoff condition may include, but is not limited to, any one of the following information: when the block error rate of the downlink transmission reaches the target value;
  • the first positive response information for the downlink data fed back by the user equipment is received.
  • step 105b the CQI reported by the user equipment is compensated according to the initial step-down step.
  • a method for adjusting a channel quality indicator is mainly provided for a system in which a plurality of communication systems can share network resources, such as a network resource sharing system of GSM and LTE, etc.
  • the method in this embodiment is performed by a base station in the first communication system.
  • the method of the first communication system may be an LTE system, and the second communication system may be a GSM system.
  • the method flowchart of the embodiment of the present invention is as shown in FIG. 3, and includes:
  • Step 201 Determine, on a shared resource of the first communication system and the second communication system, that the first communication system signal is interfered with state change information of the second communication system signal, where the state change information is an undisturbed state transition to The first change information of the interfered state, or the second change information from the interfered state to the undisturbed state.
  • the base station can determine the interference of the signal received by the second communication system by using uplink IoT detection, or uplink IBLER statistics, and specifically determining which resource blocks the interference signal appears on, so that the base station can perform corresponding scheduling and prioritize the user equipment. Scheduled on resources without interference.
  • Step 202 When the state change information is the first change information, respectively convinced that the track quality indicates that the first compensation amount N s of the CQI on the shared resource and the second compensation amount of the CQI on the exclusive resource of the first communication system are N B .
  • the base station may separately obtain the CQIs on the sub-bands included in the shared resource and the exclusive resource to the user equipment. Specifically, the base station may send the information to the user equipment.
  • the sub-band CQIs feedback request the user equipment measures the CQI on each sub-band and feeds back to the base station; then the base station can obtain the first compensation amount and the second compensation amount by, but not limited to, the following methods:
  • X is the weighted value of the CQI on each subband.
  • the average value of the CQIs on the respective sub-bands (for example, sub-band 1 to sub-band 6 shown in FIG. 4) included in the exclusive resource fed back by the user equipment, or the weighted average value as the second compensation amount N B , which is
  • the sub-band carries the weighted value of the CQI.
  • Step 203 Accomplish the CQI reported by the user equipment according to the first compensation amount to obtain the CQI on the shared resource, and compensate the CQI reported by the user equipment according to the second compensation amount to obtain the CQI on the exclusive resource, specifically, the finally obtained sharing.
  • the CQI of the resource is the sum of the CQI reported by the user equipment and the first compensation amount
  • the CQI of the obtained exclusive resource is the sum of the CQI reported by the user equipment and the second compensation amount.
  • the base station considers that when the signal of the first communication system is not interfered by other system signals, the CQI reported by the user equipment can reflect the information of the actual signal quality, and the base station only when the signal of the first communication system is interfered by other system signals, Compensate for the CQI reported by the user equipment.
  • the CQI reported by the user equipment is obtained by merging the average SINRs obtained by combining the SINR measurement values of the sub-bands, and averaging the SINRs of the individual sub-bands on the exclusive resources and the shared resources, if the shared resources are obtained.
  • the obtained SINR will be low, so that the average value of the overall SINR (ie, CQI) is low, and the CQI reported to the user equipment is required.
  • the compensation can only reflect the quality information of the actual channel; and because the channel quality on the exclusive resource and the shared resource is different, the CQI needs to be compensated with different compensation amount.
  • the steps performed when the state change information is the first change information are described, when the state change information is the first change information (ie, jumping from the interfered state to the undisturbed state).
  • the base station may not need to compensate the CQI reported by the user equipment, and directly direct scheduling and data transmission on the downlink spectrum resource according to the reported CQI.
  • the first change information is the first change information, that is, the shared information of the first communication system and the second communication system.
  • the interfered state transitions to the interfered state, and the base station determines the first compensation amount of the CQI on the shared resource and the second compensation amount of the CQI on the exclusive resource of the first communication system, respectively, and then according to the first compensation amount and the first compensation amount
  • the second compensation amount compensates the CQI reported by the user equipment to obtain the CQI on the shared resource and the exclusive resource respectively.
  • this can compensate for the state of signal interference.
  • the impact of the change on the channel quality, and then the CQI obtained according to the compensation amount is closer to the actual channel quality, and the adjusted channel quality indicator can correctly guide the scheduling and data transmission of the user equipment on the downlink resources.
  • the method according to the first embodiment of the present invention performs the adjustment of the channel quality indication, and the structure thereof is as shown in FIG. 5, including: a first determining unit 10, configured to determine shared resources in the first communication system and the second communication system.
  • the state change information of the first communication system signal is interfered by the signal of the second communication system, and the state change information is the first change information that jumps from the undisturbed state to the interfered state, or jumps from the interfered state to The second change information of the undisturbed state; the first determining unit 10 may determine the interference received by the signal of the second communication system by using uplink IoT detection, or uplink IBLER statistics.
  • the step adjustment unit 11 is configured to adjust an increase step or a down step of the compensation amount of the channel quality indicator CQI according to the state change information determined by the first decision unit 10.
  • the first CQI compensation unit 12 is configured to compensate the CQI reported by the user equipment according to the adjusted step size or the adjusted down step size of the step adjustment unit 11.
  • the first CQI compensation unit 12 may add an upward adjustment step to the compensation amount ⁇ when receiving the ACK fed back by the user equipment. (If the step adjustment unit 11 adjusts the upward adjustment step, the adjusted up adjustment is performed here. Step size), and then the obtained compensation amount is added to the CQI reported by the user equipment to compensate; the first CQI compensation unit 12 can also subtract the compensation amount ⁇ on the basis of receiving the NACK fed back by the user equipment.
  • a down step of 8 ⁇ " (if the step adjustment unit 11 adjusts the down step, here is the adjusted down step), and then the obtained compensation amount is compared with the CQI reported by the user equipment. Make compensation.
  • the step adjustment unit 11 may be based on the state change information of the first communication system signal interfered by the signal of the second communication system on the shared resources of the first communication system and the second communication system.
  • the up-step step or the down-step size of the compensation amount of the CQI is adjusted, so that the CQI is adjusted one step by the first CQI compensation unit 12.
  • this can compensate for the signal interference state.
  • the impact of the change on the channel quality, and then the CQI obtained according to the compensation amount is closer to the actual channel quality, and the adjusted channel quality indication can correctly guide the scheduling and data transmission of the user equipment on the downlink resources.
  • the base station may further include an adjustment backoff unit 13 and a second CQI compensation unit 14 in addition to the structure shown in FIG. 5, and the step adjustment unit therein 11 is specifically implemented by the first step length adjusting unit 110 and the second step adjusting unit 111, wherein:
  • the first length adjustment unit 110 is configured to: when the state change information that is determined by the first determining unit 10 is the first change information, increase an upward adjustment step of the compensation amount of the CQI without changing the compensation amount. Step down;
  • a second step adjustment unit 111 configured to: when the state change information that is determined by the first determining unit 10 is the second change information, increase a step size of the compensation amount of the CQI without changing the compensation amount. Increase the step size.
  • the first adjustment back-off condition of the step-up step specifically includes: when the block error rate of the downlink transmission reaches the target value; or, after the CQI is compensated, receiving the first information for the downlink data that is fed back by the user equipment When negating the response message.
  • the second CQI compensation unit 14 is configured to compensate the CQI reported by the user equipment according to the initial step-up step obtained after the back-off unit 13 is rolled back.
  • the adjustment and retreat unit 13 can also be used to return the adjusted down-step step if the second adjustment retreat condition of the step-down step adjusted by the step adjustment unit 11 is satisfied.
  • the second adjustment back-off condition of the down-step step includes: when the block error rate of the downlink transmission reaches the target value; or, after the CQI is compensated, the When the user equipment feeds back the first positive response information for the downlink data, the second CQI compensation unit 14 will report the CQI reported to the user equipment according to the initial downward adjustment step obtained by the back rollback unit 13 after the rollback unit 13 is rolled back. Make compensation.
  • the method according to the second embodiment of the present invention performs the adjustment of the channel quality indication.
  • the schematic diagram of the structure is as shown in FIG. 7.
  • the memory 20, the processor 21, the input device 23 and the output device 24 are respectively connected to the bus, where:
  • the memory 20 is used to store data input from the input device 23, and may also store information such as necessary files for processing the data by the processor 21.
  • the input device 23 and the output device 24 are ports through which the base station communicates with other devices, and may also include external base stations. Devices such as monitors, keyboards, mice, and printers.
  • the processor 21 in this embodiment is configured to determine state change information of the first communication system signal interfered by the signal of the second communication system on the shared resource of the first communication system and the second communication system, where the state change information is The first change information of the undisturbed state is jumped to the interfered state, or the second change information of the undisturbed state is jumped from the interfered state; and the compensation amount of the channel quality indicator CQI is adjusted according to the state change information Step up or down the step size; then adjust the CQI reported by the user equipment according to the adjusted step size or the adjusted step size.
  • the processor 21 increases the step size of the compensation amount of the CQI without changing the down step of the compensation amount, in this case,
  • the processor 21 may add an adjusted step-up step to the compensation amount ⁇ when the input device 23 receives the ACK fed back by the user equipment, and then the obtained compensation amount and the user equipment.
  • the reported CQI is added to compensate; when the input device 23 receives the NACK fed back by the user equipment, the previous down step is subtracted from the compensation amount ⁇ , and then the obtained compensation amount is reported by the user equipment. CQI is added to compensate.
  • the processor 21 is further configured to: if the first adjusted back-off condition of the step-up step is met, return the adjusted step-up step to an initial step-up step;
  • the long first adjustment back-off condition specifically includes: when the block error rate of the downlink transmission reaches the target value; or, after the CQI is compensated, receiving the first negative response to the downlink data fed back by the user equipment Information time; and according to the initial step-up step obtained after the rollback to the user equipment The reported CQI is compensated.
  • the processor 21 may add an upward adjustment step to the compensation amount ⁇ when the input device 23 receives the ACK fed back by the user equipment, and then obtain the compensation amount. Compensating with the CQI reported by the user equipment to perform compensation; when the input device 23 receives the NACK fed back by the user equipment, the subtracted step size of the last adjusted step is subtracted from the compensation amount ⁇ , and then The obtained compensation amount is added to the CQI reported by the user equipment to compensate.
  • the processor 21 is further configured to: if the second adjusted back-off condition of the down-step step is met, return the adjusted down-step step to an initial down-step step; and the second adjustment of the down-step step
  • the fallback condition specifically includes: when the block error rate of the downlink transmission reaches the target value; or, when the CQI is compensated, when receiving the first acknowledgement information for the downlink data fed back by the user equipment; The CQI reported by the user equipment is compensated according to the initial downward adjustment step obtained after the backoff.
  • the method of the third embodiment of the present invention performs the adjustment of the channel quality indicator, and the structure thereof is as shown in FIG. 8.
  • the second determining unit 20 is configured to determine shared resources in the first communication system and the second communication system.
  • the state change information of the first communication system signal is interfered by the signal of the second communication system, and the state change information is the first change information that jumps from the undisturbed state to the interfered state, or jumps from the interfered state
  • the second change information is the undisturbed state.
  • the compensation amount obtaining unit 21 is configured to determine, when the state change information determined by the second determining unit 20 is the first change information, a first compensation amount of the channel quality indicator CQI on the shared resource and the CQI a second amount of compensation on the exclusive resource of the first communication system;
  • the compensation unit 22 is configured to compensate the CQI reported by the user equipment according to the first compensation amount acquired by the compensation amount acquiring unit 21 to obtain the CQI on the shared resource, and compensate according to the second compensation amount acquired by the compensation amount acquiring unit 21
  • the CQI reported by the user obtains the CQI on the exclusive resource
  • the CQI on the shared resource finally obtained by the compensation unit 22 is the sum of the CQI reported by the user equipment and the first compensation amount
  • the compensation unit 22 finally obtains the exclusive resource.
  • the CQI is the sum of the CQI reported by the user equipment and the second compensation amount.
  • the base station may further include a CQI processing unit, configured to: after the compensation unit obtains the compensated CQI, may perform scheduling and data transmission on the downlink spectrum resource according to the compensated CQI; The second change information, the compensation unit 22 does not compensate the CQI reported by the user equipment, and the CQI processing unit directly guides the downlink resource configuration and the downlink transmission of the user equipment according to the CQI reported by the user equipment.
  • a CQI processing unit configured to: after the compensation unit obtains the compensated CQI, may perform scheduling and data transmission on the downlink spectrum resource according to the compensated CQI; The second change information, the compensation unit 22 does not compensate the CQI reported by the user equipment, and the CQI processing unit directly guides the downlink resource configuration and the downlink transmission of the user equipment according to the CQI reported by the user equipment.
  • the state change information of the first communication system signal interfered by the signal of the second communication system is the first The change information, that is, the undisturbed state transitions to the interfered state
  • the compensation amount obtaining unit 312 determines the first compensation amount of the CQI on the shared resource and the second compensation of the CQI on the exclusive resource of the first communication system, respectively.
  • the compensation unit 32 then compensates the CQI reported by the user equipment according to the first compensation amount and the second compensation amount to obtain the CQI on the shared resource and the exclusive resource respectively.
  • the base station may include a structure as shown in FIG. 8, wherein the compensation amount acquiring unit 31 may further pass the sub-band CQI acquiring unit 311, the first compensation determining unit 310, and The second compensation determining unit 312 is implemented, wherein:
  • the sub-band CQI obtaining unit 311 is configured to separately acquire CQIs on the respective sub-bands included in the shared resource and the exclusive resource to the user equipment.
  • the sub-band CQI acquiring unit 311 may send sub-band CQIs to the user equipment.
  • the feedback request then receives the CQI on each subband of the user equipment feedback.
  • the first compensation determining unit 310 is configured to use, as the first compensation amount, an average value of the CQIs on the respective sub-bands included in the shared resource acquired by the sub-band CQI acquiring unit 311, or a weighted average value. .
  • the second compensation determining unit 312 is configured to use, as the second compensation, an average value of the CQIs on the respective sub-bands included in the exclusive resource acquired by the sub-band CQI acquiring unit 311, or a weighted average value. the amount.
  • the first compensation determining unit 310 may further use, as the first compensation amount, a maximum value of CQIs on each subband included in the shared resource that is fed back by the user equipment;
  • the second compensation determining unit 312 may further use, as the second compensation amount, a maximum value of CQIs on each sub-band included in the exclusive resource that is fed back by the user equipment.
  • the method of the fourth embodiment of the present invention performs channel quality indication adjustment, and the structure diagram thereof is similar to the structure of the base station in the second embodiment of the apparatus of the present invention, including a memory, a processor, an input device, and an output device respectively connected to the bus. , among them:
  • the memory is used to store data input from the input device, and may also store information such as necessary files processed by the processor; the input device and the output device are ports through which the base station communicates with other devices, and may also include devices externally connected to the base station, such as a display. Keyboard, mouse, printer, etc.
  • the processor in this embodiment is configured to determine state change information of the first communication system signal interfered by the signal of the second communication system on the shared resource of the first communication system and the second communication system, where the state change information is The first change information of the undisturbed state is jumped to the interfered state, or the second change information is changed from the interfered state to the undisturbed state; when the state change information is the first change information, respectively Determining a first compensation amount of the CQI on the shared resource and a second compensation amount of the CQI on the exclusive resource of the first communication system; and then compensating the user equipment according to the first compensation amount
  • the CQI obtains the CQI on the shared resource, and compensates the CQI reported by the user equipment according to the second compensation amount to obtain the CQI on the exclusive resource.
  • the CQI of the shared resource finally obtained by the processor is reported by the user equipment.
  • the sum of the CQI and the first compensation amount, and the CQI obtained on the exclusive resource is the sum of the CQI reported by the user equipment and the second compensation amount.
  • the processor does not compensate the CQI reported by the user equipment, and directly guides the downlink resource configuration and the downlink transmission of the user equipment according to the CQI reported by the user equipment.
  • the processor may acquire, by the processor, the CQIs on the respective subbands included in the shared resource and the exclusive resource, where the processor can obtain the first compensation amount and the second compensation amount.
  • the processor may control The output device sends a sub-band CQIs feedback request to the user equipment, and the input device receives the CQI on each sub-band fed back by the user equipment; then the processor may obtain the first compensation amount according to the following methods: Two compensation amount:
  • the processor uses the average value of the CQIs on the respective sub-bands included in the shared resource acquired by the sub-band CQI acquiring unit 311, or the weighted average value as the first compensation amount. Will The average value of the CQIs on the respective sub-bands included in the exclusive resource acquired by the CQI acquisition unit 311, or the weighted average value is used as the second compensation amount.
  • the processor may further use, as the first compensation amount, a maximum value of CQIs on each subband included in the shared resource that is fed back by the user equipment, and use the exclusive feedback that is sent by the user equipment.
  • the maximum value of the CQI on each subband included in the resource is taken as the second compensation amount.
  • the program can be stored in a computer readable storage medium.
  • the storage medium can include: Read only memory (ROM), random access memory (RAM), magnetic or optical disk, and the like.

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Abstract

本发明实施例公开了信道质量指示的调整方法及基站,应用于通信技术领域。基站会根据在第一通信系统和第二通信系统的共享资源上,第一通信系统信号受第二通信系统信号干扰的状态变化信息,来调整CQI的补偿量的上调步长或下调步长,从而进行一步地调整CQI;或当所述状态变化信息中为第一变化信息,即从未受干扰状态跳转为受干扰状态,基站会分别确定CQI在共享资源上的第一补偿量和CQI在第一通信系统的独享资源上的第二补偿量,然后根据第一补偿量和第二补偿量补偿用户设备上报的CQI分别得到在所述共享资源上和独享资源上的CQI,调整后的信道质量指示能正确指导用户设备在下行资源上的调度和数据传输。

Description

一种信道质量指示的调整方法及基站 本申请要求 2013 年 05 月 22 日提交中国专利局、 申请号为 201310193459. 3 , 发明名称为 《一种信道质量指示的调整方法及基站》 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 本发明涉及通信技术领域, 特别涉及信道质量指示的调整方法及基站。
背景技术 现有的通信系统中, 在用户设备与基站通信的过程中, 用户设备通常 会周期性地上报宽带信道质量指示(Channel Quality Indicator, CQI ),该 CQI 主要指示基站为该用户设备的下行传输指配调制编码方式等。
用户设备上报的 CQI是根据各子带的信号与干扰加噪声比 (Signal to Interference plus Noise Ratio , SINR )测量值进行合并得到的平均 SINR映射 而来的。 在全球移动通信系统 ( Global System for Mobile communication, GSM )与长期演进( Long Term Evolution, LTE ) 网络资源共享系统中, 由 于在共享频谱上 LTE系统会受到 GSM的窄带干扰, 则共享频谱上的信道质 量与未受干扰的频谱上的信道质量存在一定差异。 如果基站根据用户设备 上报的 CQI指导用户设备在未受干扰的频谱资源上调度和数据传输,会使得 数据传输的吞吐量偏低,而根据该 CQI指导用户设备在受干扰的共享频谱资 源上调度和数据传输, 则会使得数据传输的成功率下降。 因此, 现有的网 络资源共享系统中,用户设备上报的 CQI不能正确指导用户设备在下行资源 (即从基站到用户设备的网络资源 )上的调度和数据传输。
发明内容 本发明实施例提供信道质量指示的调整方法及基站, 使得在网络资源 共享的系统中, 调整后的信道质量指示能正确指导用户设备在下行资源上 的调度和数据传输。
本发明实施例第一方面提供一种信道质量指示的调整方法, 包括: 判决在第一通信系统和第二通信系统的共享资源上, 第一通信系统信 号受第二通信系统信号干扰的状态变化信息, 所述状态变化信息为从未受 干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态跳转为未受 干扰状态的第二变化信息;
根据所述状态变化信息,调整信道质量指示 CQI的补偿量的上调步长或 下调步长;
根据所述调整后的上调步长或调整后的下调步长, 对用户设备上报的 CQI进行补偿。
本发明实施例第一方面的第一种可能实现方式中, 所述根据所述状态 变化信息, 调整信道质量指示 CQI的补偿量的上调步长或下调步长, 具体包 括:
当所述状态变化信息为所述第一变化信息,则提升所述 CQI的补偿量的 上调步长;
当所述状态变化信息为所述第二变化信息,则提升所述 CQI的补偿量的 下调步长。
结合本发明实施例第一方面, 或第一方面的第一种可能实现方式, 在 本发明实施例第一方面的第二种可能实现方式中, 所述方法还包括:
如果满足所述上调步长的第一调整回退条件, 则将所述调整后的上调 步长退回到初始的上调步长; 所述上调步长的第一调整回退条件具体包括: 当下行传输的块误码率达到目标值时; 或, 当补偿所述 CQI后, 接收到所述 用户设备反馈的对于下行数据的第一个否定应答信息时;
根据所述初始的上调步长, 对用户设备上报的 CQI进行补偿。
结合本发明实施例第一方面, 或第一方面的第一种可能实现方式, 在 本发明实施例第一方面的第三种可能实现方式中, 所述方法还包括:
如果满足所述下调步长的第二调整回退条件, 则将所述调整后的下调 步长退回到初始的下调步长;
所述下调步长的第二调整回退条件具体包括: 当下行传输的块误码率 达到目标值时; 或, 当补偿所述 CQI后, 接收到所述用户设备反馈的对于下 行数据的第一个肯定应答信息时; 根据所述初始的下调步长, 对用户设备上报的 CQI进行补偿。
本发明实施例第二方面提供一种基站, 包括:
第一判决单元, 用于判决在第一通信系统和第二通信系统的共享资源 上, 第一通信系统信号受第二通信系统信号干扰的状态变化信息, 所述状 态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从受 干扰状态跳转为未受干扰状态的第二变化信息;
步长调整单元, 用于根据所述第一判决单元判决的状态变化信息, 调 整信道质量指示 CQI的补偿量的上调步长或下调步长;
第一 CQI补偿单元 ,用于根据所述步长调整单元调整后的上调步长或调 整后的下调步长, 对用户设备上报的 CQI进行补偿。
在本发明实施例第二方面的第一种可能实现方式中, 所述步长调整单 元具体包括:
第一步长调整单元, 用于当所述第一判决单元判决的状态变化信息为 所述第一变化信息, 则提升所述 CQI的补偿量的上调步长;
第二步长调整单元, 用于当所述第一判决单元判决的状态变化信息为 所述第二变化信息, 则提升所述 CQI的补偿量的下调步长。
结合本发明实施例第二方面, 或第二方面的第一种可能实现方式, 在 本发明实施例第二方面的第二种可能实现方式中, 基站还包括:
调整回退单元, 用于如果满足所述上调步长的第一调整回退条件, 则 将所述调整后的上调步长退回到初始的上调步长; 所述上调步长的第一调 整回退条件具体包括: 当下行传输的块误码率达到目标值时; 或, 当补偿 所述 CQI后,接收到所述用户设备反馈的对于下行数据的第一个否定应答信 息时;
第二 CQI补偿单元,用于根据所述调整回退单元回退后得到的初始的上 调步长, 对用户设备上报的 CQI进行补偿。
结合本发明实施例第二方面的第二种可能实现方式, 在本发明实施例 第二方面的第三种可能实现方式中:
所述调整回退单元, 还用于如果满足所述下调步长的第二调整回退条 件, 则将所述调整后的下调步长退回到初始的下调步长; 所述下调步长的 第二调整回退条件具体包括: 当下行传输的块误码率达到目标值时; 或, 当补偿所述 CQI后,接收到所述用户设备反馈的对于下行数据的第一个肯定 应答信息时;
所述第二 CQI补偿单元,还用于根据所述调整回退单元回退后得到的初 始的下调步长, 对用户设备上报的 CQI进行补偿。
可见, 基站会根据在第一通信系统和第二通信系统的共享资源上, 第 一通信系统信号受第二通信系统信号干扰的状态变化信息,来调整 CQI的补 偿量的上调步长或下调步长, 从而进行一步地调整 CQI。 使得在 CQI调整的 过程中, 考虑到在网络资源共享的系统中, 一个系统信号对另一系统信号 的干扰, 并根据信号干扰的状态变化信息迅速地调整补偿量, 这样可以弥 补由于信号干扰状态的变化造成的对信道质量的影响, 进而根据补偿量得 到的 CQI更接近实际信道质量,则调整后的信道质量指示能正确指导用户设 备在下行资源上的调度和数据传输。
本发明实施例第三方面提供一种信道质量指示的调整方法, 包括: 判决在第一通信系统和第二通信系统的共享资源上, 第一通信系统信 号受第二通信系统信号的干扰的状态变化信息, 所述状态变化信息为从未 受干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态跳转为未 受干扰状态的第二变化信息;
当所述状态变化信息为所述第一变化信息,分别确定信道质量指示 CQI 在所述共享资源上的第一补偿量和所述 CQI在所述第一通信系统的独享资 源上的第二补偿量;
根据所述第一补偿量补偿用户设备上报的 CQI得到在所述共享资源上 的 CQI, 并根据第二补偿量补偿用户设备上报的 CQI得到在独享资源上的 CQI。
本发明实施例第三方面的第一种可能实现方式中, 所述分别确定信道 质量指示 CQI在所述共享资源上的第一补偿量和所述 CQI在所述第一通信 系统的独享资源上的第二补偿量, 具体包括:
向所述用户设备分别获取所述共享资源和独享资源所包括的各个子带 上的 CQI;
将所述用户设备反馈的所述共享资源所包括的各个子带上的 C Q I的平 均值, 或加权后的平均值作为所述第一补偿量;
将所述用户设备反馈的所述独享资源所包括的各个子带上的 C Q I的平 均值, 或加权后的平均值作为所述第二补偿量。 结合本发明实施例第三方面, 在本发明实施例第三方面的第二种可能 实现方式中,所述分别确定信道质量指示 CQI在所述共享资源上的第一补偿 量和所述 CQI在所述第一通信系统的独享资源上的第二补偿量, 具体包括: 向所述用户设备分别获取所述共享资源和独享资源所包括的各个子带 上的 CQI;
将所述用户设备反馈的所述共享资源所包括的各个子带上的 C Q I的最 大值作为所述第一补偿量;
将所述用户设备反馈的所述独享资源所包括的各个子带上的 C Q I的最 大值作为所述第二补偿量。
本发明实施例第四方面提供一种基站, 包括:
第二判决单元, 用于判决在第一通信系统和第二通信系统的共享资源 上, 第一通信系统信号受第二通信系统信号的干扰的状态变化信息, 所述 状态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从 受干扰状态跳转为未受干扰状态的第二变化信息;
补偿量获取单元, 用于当所述第二判决单元判决的状态变化信息为所 述第一变化信息,分别确定信道质量指示 CQI在所述共享资源上的第一补偿 量和所述 CQI在所述第一通信系统的独享资源上的第二补偿量;
补偿单元, 用于根据所述补偿量获取单元获取的第一补偿量补偿用户 设备上报的 CQI得到在所述共享资源上的 CQI, 并根据第二补偿量补偿用户 设备上报的 CQI得到在独享资源上的 CQI。
本发明实施例第四方面的第一种可能实现方式中, 所述补偿量获取单 元具体包括:
子带 CQI获取单元,用于向所述用户设备分别获取所述共享资源和独享 资源所包括的各个子带上的 C Q I;
第一补偿确定单元,用于将所述子带 CQI获取单元获取的所述共享资源 所包括的各个子带上的 CQI的平均值,或加权后的平均值作为所述第一补偿 量;
第二补偿确定单元,用于将所述子带 CQI获取单元获取的所述独享资源 所包括的各个子带上的 CQI的平均值,或加权后的平均值作为所述第二补偿 量。
结合本发明实施例第四方面的第一种可能的实现方式, 在本发明实施 例第四方面的第二种可能实现方式中:
所述第一补偿确定单元, 还用于将所述用户设备反馈的所述共享资源 所包括的各个子带上的 CQI的最大值作为所述第一补偿量;
所述第二补偿确定单元, 还用于将所述用户设备反馈的所述独享资源 所包括的各个子带上的 CQI的最大值作为所述第二补偿量。
可见, 当在第一通信系统和第二通信系统的共享资源上, 第一通信系 统信号受第二通信系统信号干扰的状态变化信息中为第一变化信息, 即从 未受干扰状态跳转为受干扰状态,基站会分别确定 CQI在共享资源上的第一 补偿量和 CQI在第一通信系统的独享资源上的第二补偿量,然后根据第一补 偿量和第二补偿量补偿用户设备上报的 CQI分别得到在所述共享资源上和 独享资源上的 CQI。 使得在 CQI调整的过程中, 考虑到在网络资源共享的系 统中, 一个系统信号对另一系统信号的干扰, 并在有干扰的时候补偿用户 设备上报的 CQI,这样可以弥补由于信号干扰状态的变化造成的对信道质量 的影响, 进而才艮据补偿量得到的 CQI更接近实际信道质量, 则调整后的信道 质量指示能正确指导用户设备在下行资源上的调度和数据传输。
附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对 实施例或现有技术描述中所需要使用的附图作简单地介绍, 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性的前提下, 还可以根据这些附图获得其他的 附图。
图 1是本发明方法实施例一提供的一种信道质量指示的调整方法的流 程图;
图 2是本发明方法实施例一提供的另一种信道质量指示的调整方法的 流程图;
图 3是本发明方法实施例二提供的一种信道质量指示的调整方法的流 程图;
图 4是本发明方法实施例二中所述的独享资源和共享资源的结构示意 图; 图 5是本发明设备实施例 提供的一种基站的结构示意图; 图 6是本发明设备实施例 提供的另一种基站的结构示意图;
图 7是本发明设备实施例 .提供的一种基站的结构示意图;
图 8是本发明设备实施例 提供的一种基站的结构示意图;
图 9是本发明设备实施例 提供的另一种基站的结构示意图。
具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的 范围。
本发明方法实施例一
提供一种信道质量指示的调整方法, 主要是针对多种通信系统能共享 网络资源的系统, 比如 GSM与 LTE的网络资源共享系统等, 本实施例的方 法是第一通信系统中的基站所执行的方法, 其中第一通信系统可以是 LTE 系统, 第二通信系统可以是 GSM系统等, 本发明实施例的方法流程图如图 1 所示, 包括:
步骤 101 , 判决在第一通信系统和第二通信系统的共享资源上, 第一通 信系统信号受第二通信系统信号干扰的状态变化信息, 该状态变化信息可 以为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态 跳转为未受干扰状态的第二变化信息。 其中, 第一通信系统信号受第二通 信系统信号干扰的状态变可以是第一通信系统整体受到干扰的状态, 也可 以是指用户设备各自受到的干扰状态。
可以理解, 基站可以通过上行的热噪声抬升(IoT )检测, 或上行初传 误块率(IBLER )统计等方法对受到第二通信系统信号的干扰进行判决, 具 体可以确定干扰信号(包括由于第二通信系统信号的邻频泄露噪声的干扰) 出现在哪些资源块(Resource Block, BR )上, 从而基站可以进行相应的调 度, 将用户设备优先调度在没有干扰的资源上。
步骤 102,根据步骤 101中判决的状态变化信息, 调整信道质量指示 CQI 的补偿量 ^的上调步长 或下调步长 Δ , 具体地, 当状态变化信息为第 一变化信息时, 提升 CQI的补偿量的上调步长, 而不改变下调步长; 当状态 变化信息为第二变化信息时, 则提升 CQI的补偿量的下调步长, 而不改变上 由于用户设备上报的 CQI根据各子带的 SINR测量值进行合并得到的平 均 SINR映射而来的, 而在受干扰的资源上对应的 SINR会比未受干扰的资源 上对应的 SINR的值要低, 因此, 当在共享资源上, 当从未受干扰状态跳转 为受干扰状态时, 得到的平均 SINR要偏低, 如果使用未受干扰时的上调步 长来调整补偿量 ,最终根据调整的补偿量得到的 CQI与实际的信道质量出现 一定偏差即偏低, 则需要将该 CQI的补偿量的上调步长提升; 当在共享资源 上, 当从受干扰状态跳转为未受干扰状态时, 得到的平均 SINR要偏高, 如 果使用受干扰时的下调步长来调整补偿量, 最终根据调整的补偿量得到的 CQI与实际的信道质量出现一定偏差即偏高, 需要将该 CQI的补偿量的下调 步长提升。
步骤 103 , 根据调整后上调步长或调整后下调步长, 对用户设备上报的 CQI进行补偿, 然后基站就可以根据补偿后的 CQI指导的频谱资源上的调度 和数据传输。
可以理解, 在实际应用中, 用户设备对 CQI的上报是存在一定时延的, 比如 CQI从测量到上报的时延及上报时间到调度时刻的时延,则用户设备上 报的 CQI与实际信道状况还是存在一定误差的。基站就需要对用户设备上报 的 CQI进行调整, 具体可以通过外环链路自适应 ( Outer Loop Link Adaptation, OLLA )的方法对上报的 CQI进行补偿, 主要是利用用户设备对 下行传输正确与否来指导 CQI的调整,而用户设备在正确接收下行传输时可 以向基站反馈肯定应答(Acknowledgement, ACK )信息, 在未正确接收下 行传输时可以向基站反馈否定应答( Negative Acknowledgement , NACK ) 信息。 则具体地:
基站会设置一个 CQI的补偿量^^, 当基站接收到用户设备反馈的 ACK 时, 说明实际信道质量较好, 则 CQI的上报值太保守, 需要提升 CQI, 则在 该补偿量^^的基础上加上一个上调步长 ;当基站接收到用户设备反馈的 NACK时, 说明实际信道质量下降, 则 CQI的上报值会偏高, 需要降低 CQI, 则在该补偿量 Δ。的基础上减去上一个下调步长八^" , 这样动态调整 CQI的 补偿量, 最终能使下行传输的块误码率(Block Error Ratio, BLER )收敛到 目标值, 本实施例中, 才信号干扰状态发生变化时, 可以相应地通过提升 上调步长或下调步长, 使得 BLER能迅速收敛, 弥补了信号干扰状态变化时 对信道质量造成的影响。 一般来讲, 上调步长^ 、 下调步长八 ^"与 BLER 的目标值之间的关系为: , BLE^ , 其中, 是 BLER的目 标值。
该若用户设备上报的 CQI为 e2 ^ , 则最终得到的有效 CQI为: 上报的 CQI与调整后补偿量之和,
Figure imgf000011_0001
可见, 本发明实施例中, 基站会根据在第一通信系统和第二通信系统 的共享资源上, 第一通信系统信号受第二通信系统信号干扰的状态变化信 息,来调整 CQI的补偿量的上调步长或下调步长,从而进行一步地调整 CQI。 使得在 CQI调整的过程中, 考虑到在网络资源共享的系统中, 一个系统信号 对另一系统信号的干扰, 并根据信号干扰的状态变化信息迅速地调整补偿 量, 这样可以弥补由于信号干扰状态的变化造成的对信道质量的影响, 进 而根据补偿量得到的 CQI更接近实际信道质量,则调整后的信道质量指示能 正确指导用户设备在下行资源上的调度和数据传输。
需要说明的是, 通过上述步骤 101到 103 , 基站可以通过第一通信系统 信号受第二通信系统信号干扰的状态变化信息来指导 CQI的调整,当信号干 扰的状态从一个状态到另一个状态后, 基站还可以执行如下步骤, 流程如 图 2所示, 具体包括:
( 1 ) 当信号干扰从未受干扰状态跳转为受干扰状态, 基站可以通过提 升了上调步长来使得 BLER能迅速收敛, 当在一个状态稳定后, 则基站还可 以执行下述的步骤 104a和 105a:
步骤 104a, 如果满足上调步长的第一调整回退条件, 则将调整后的上 调步长退回到初始的上调步长。 其中第一调整回退条件可以包括但不限于 如下任一个信息: 当下行传输的块误码率 (即上述的 £ ^g ) 达到目标值 时; 当通过上述步骤 103补偿 CQI后, 当接收到用户设备反馈的对于下行数 据的第一个否定应答信息时等。
步骤 105a, 根据初始的上调步长, 对用户设备上报的 CQI进行补偿。
( 2 ) 当信号干扰从受干扰状态跳转为未受干扰状态, 基站可以通过提 升了下调步长来使得 BLER能迅速收敛, 当在一个状态稳定后, 则基站还可 以执行下述的步骤 104b和 105b:
步骤 104b, 如果满足下调步长的第二调整回退条件, 则将调整后的下 调步长退回到初始的下调步长。 其中第二调整回退条件可以包括但不限于 如下任一个信息: 当下行传输的块误码率达到目标值时; 当通过上述步骤
103补偿 CQI后, 当接收到用户设备反馈的对于下行数据的第一个肯定应答 信息时等。
步骤 105b, 根据初始的下调步长, 对用户设备上报的 CQI进行补偿。 本发明方法实施例二
提供一种信道质量指示的调整方法, 主要是针对多种通信系统能共享 网络资源的系统, 比如 GSM与 LTE的网络资源共享系统等, 本实施例的方 法是第一通信系统中的基站所执行的方法, 其中第一通信系统可以是 LTE 系统, 第二通信系统可以是 GSM系统等, 本发明实施例的方法流程图如图 3 所示, 包括:
步骤 201 , 判决在第一通信系统和第二通信系统的共享资源上, 第一通 信系统信号受第二通信系统信号的干扰的状态变化信息, 其中状态变化信 息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态 跳转为未受干扰状态的第二变化信息。
基站可以通过上行的 IoT检测, 或上行 IBLER统计等方法对受到第二通 信系统信号的干扰进行判决, 具体可以确定干扰信号出现在哪些资源块上, 从而基站可以进行相应的调度, 将用户设备优先调度在没有干扰的资源上。
步骤 202,当状态变化信息为第一变化信息,分别确信道质量指示定 CQI 在共享资源上的第一补偿量 Ns和 CQI在第一通信系统的独享资源上的第二 补偿量 NB
在执行本步骤, 当状态变化信息为第一变化信息时, 基站可以先向用 户设备分别获取共享资源和独享资源所包括的各个子带上的 CQI, 具体地, 基站可以向用户设备下发子带 CQIs的反馈请求, 则用户设备会测量各个子 带上的 CQI并反馈给基站;然后基站可以通过但不限于如下几种方式来得到 第一补偿量和第二补偿量:
( 1 )将用户设备反馈的共享资源所包括的各个子带 (例如图 4中所示 的子带 7到子带 10 )上的 CQI的平均值, 或加权后的平均值作为第一补偿量 Ns, 即^ _
Figure imgf000013_0001
,其中 J是共享资源所包括的子带个数,
X 为各个子带上 CQI的加权值。
将用户设备反馈的独享资源所包括的各个子带(例如图 4中所示的子带 1到子带 6 )上的 CQI的平均值, 或加权后的平均值作为第二补偿量 NB, 即
NB 其中 I是独享资源所包括的子带个数, 1 为各
Figure imgf000013_0002
个子带上 CQI的加权值。
( 2 )将用户设备反馈的共享资源所包括的各个子带 (例如图 4中所示 的子带 7到子带 10 )上的 CQI的最大值作为第一补偿量; 将用户设备反馈的 独享资源所包括的各个子带 (例如图 4中所示的子带 1到子带 6 )上的 CQI的 最大值作为第二补偿量。
步骤 203 , 根据第一补偿量补偿用户设备上报的 CQI得到在共享资源上 的 CQI, 并根据第二补偿量补偿用户设备上报的 CQI得到在独享资源上的 CQI, 具体地, 最终得到的共享资源上的 CQI为用户设备上报的 CQI与第一 补偿量之和, 最终得到的独享资源上的 CQI为用户设备上报的 CQI与第二补 偿量之和。
本实施例中, 基站认为在第一通信系统信号未受其它系统信号干扰时, 用户设备上报的 CQI能反映实际信号质量的信息,则基站只在第一通信系统 信号受到其它系统信号干扰时, 对用户设备上报的 CQI进行补偿。 又由于用 户设备上报的 CQI是根据各子带的 SINR测量值进行合并得到的平均 SINR映 射而来的, 即将独享资源和共享资源上各个子带的 SINR进行平均得到的, 其中如果在共享资源上, 如果有一个通信系统信号对另一个通信系统信号 进行干扰,则得到的 SINR会偏低,这样会使得整体得到的 SINR的平均值(即 CQI )较低, 则需要对用户设备上报的 CQI进行补偿, 才能反映实际信道的 质量信息; 且由于独享资源和共享资源上的信道质量不同, 需要用不同的 补偿量对 CQI进行补偿。
需要说明的是, 上述步骤 202和 203中说明了当状态变化信息为第一变 化信息时执行的步骤, 当状态变化信息为第一变化信息 (即从受干扰状态 跳转为未受干扰状态), 基站可以不需要对用户设备上报的 CQI进行补偿, 直接根据上报的 CQI指导下行频谱资源上的调度和数据传输。 可见, 本发明实施例中, 当在第一通信系统和第二通信系统的共享资 源上, 第一通信系统信号受第二通信系统信号干扰的状态变化信息中为第 一变化信息, 即从未受干扰状态跳转为受干扰状态, 基站会分别确定 CQI 在共享资源上的第一补偿量和 CQI在第一通信系统的独享资源上的第二补 偿量,然后根据第一补偿量和第二补偿量补偿用户设备上报的 CQI分别得到 在所述共享资源上和独享资源上的 CQI。 使得在 CQI调整的过程中, 考虑到 在网络资源共享的系统中, 一个系统信号对另一系统信号的干扰, 并在有 干扰的时候补偿用户设备上报的 CQI,这样可以弥补由于信号干扰状态的变 化造成的对信道质量的影响,进而根据补偿量得到的 CQI更接近实际信道质 量, 则调整后的信道质量指示能正确指导用户设备在下行资源上的调度和 数据传输。 本发明设备实施例一 所述的方法进行信道质量指示的调整, 其结构示意图如图 5所示, 包括: 第一判决单元 10 , 用于判决在第一通信系统和第二通信系统的共享资 源上, 第一通信系统信号受第二通信系统信号干扰的状态变化信息, 所述 状态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从 受干扰状态跳转为未受干扰状态的第二变化信息; 第一判决单元 10可以通 过上行的 IoT检测, 或上行 IBLER统计等方法对受到第二通信系统信号的干 扰进行判决。
步长调整单元 11 , 用于根据所述第一判决单元 10判决的状态变化信息, 调整信道质量指示 CQI的补偿量的上调步长或下调步长。
第一 CQI补偿单元 12,用于根据所述步长调整单元 11调整后的上调步长 或调整后的下调步长, 对用户设备上报的 CQI进行补偿。 第一 CQI补偿单元 12可以在接收到用户设备反馈的 ACK时,在补偿量 ^的基础上加上一个上 调步长 (如果步长调整单元 11调整了上调步长, 则这里为调整后的上调 步长), 然后将得到的补偿量与用户设备上报的 CQI相加以进行补偿; 第一 CQI补偿单元 12还可以在接收到用户设备反馈的 NACK时, 在补偿量^^的 基础上减去上一个下调步长八^ " (如果步长调整单元 11调整了下调步长,则 这里为调整后的下调步长), 然后将得到的补偿量与用户设备上报的 CQI相 加以进行补偿。
可见, 本发明实施例的基站中, 步长调整单元 11会根据在第一通信系 统和第二通信系统的共享资源上, 第一通信系统信号受第二通信系统信号 干扰的状态变化信息, 来调整 CQI的补偿量的上调步长或下调步长, 从而由 第一 CQI补偿单元 12进行一步地调整 CQI。 使得在 CQI调整的过程中, 考虑 到在网络资源共享的系统中, 一个系统信号对另一系统信号的干扰, 并根 据信号干扰的状态变化信息迅速地调整补偿量, 这样可以弥补由于信号干 扰状态的变化造成的对信道质量的影响 ,进而根据补偿量得到的 CQI更接近 实际信道质量, 则调整后的信道质量指示能正确指导用户设备在下行资源 上的调度和数据传输。
参考图 6所示, 在一个具体的实施例中, 基站除了可以包括如图 5所示 的结构外, 还可以包括调整回退单元 13和第二 CQI补偿单元 14, 且其中的步 长调整单元 11具体通过第一步长调整单元 110和第二步长调整单元 111来实 现, 其中:
第一步长调整单元 110, 用于当所述第一判决单元 10判决的状态变化信 息为所述第一变化信息, 则提升所述 CQI的补偿量的上调步长, 而不改变补 偿量的下调步长;
第二步长调整单元 111 , 用于当所述第一判决单元 10判决的状态变化信 息为所述第二变化信息, 则提升所述 CQI的补偿量的下调步长, 而不改变补 偿量的上调步长。
调整回退单元 13 , 用于如果满足所述步长调整单元 11调整后的上调步 长的第一调整回退条件, 则将所述调整后的上调步长退回到初始的上调步 长; 所述上调步长的第一调整回退条件具体包括: 当下行传输的块误码率 达到目标值时; 或, 当补偿所述 CQI后, 接收到所述用户设备反馈的对于下 行数据的第一个否定应答信息时等。
第二 CQI补偿单元 14,用于根据所述调整回退单元 13回退后得到的初始 的上调步长, 对用户设备上报的 CQI进行补偿。
在本实施例中, 调整回退单元 13 , 还可以用于如果满足所述步长调整 单元 11调整后的下调步长的第二调整回退条件, 则将所述调整后的下调步 长退回到初始的下调步长; 所述下调步长的第二调整回退条件具体包括: 当下行传输的块误码率达到目标值时; 或, 当补偿所述 CQI后, 接收到所述 用户设备反馈的对于下行数据的第一个肯定应答信息时;则第二 CQI补偿单 元 14就会根据所述调整回退单元 13回退后得到的初始的下调步长, 对用户 设备上报的 CQI进行补偿。 本发明设备实施例二 所述的方法进行信道质量指示的调整, 其结构示意图如图 7所示, 包括分别 连接到总线上的存储器 20、 处理器 21、 输入装置 23和输出装置 24, 其中: 存储器 20中用来储存从输入装置 23输入的数据, 且还可以储存处理器 21处理数据的必要文件等信息; 输入装置 23和输出装置 24是基站与其他设 备通信的端口, 还可以包括基站外接的设备比如显示器、 键盘、 鼠标和打 印机等。
本实施例中的处理器 21 , 用于判决在第一通信系统和第二通信系统的 共享资源上, 第一通信系统信号受第二通信系统信号干扰的状态变化信息, 所述状态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态跳转为未受干扰状态的第二变化信息; 并根据状态变化信 息, 调整信道质量指示 CQI的补偿量的上调步长或下调步长; 然后才艮据调整 后上调步长或调整后下调步长, 对用户设备上报的 CQI进行补偿。
( 1 ) 当处理器 21判决的状态变化信息为所述第一变化信息时: 处理器 21会提升 CQI的补偿量的上调步长, 而不改变补偿量的下调步 长, 这种情况下, 处理器 21在对 CQI进行补偿时, 可以在输入装置 23接收到 用户设备反馈的 ACK时,在补偿量 ^的基础上加上一个调整后的上调步长 , 然后将得到的补偿量与用户设备上报的 CQI相加以进行补偿; 还可以 在输入装置 23接收到用户设备反馈的 NACK时, 在补偿量^^的基础上减去 上一个下调步长 ,然后将得到的补偿量与用户设备上报的 CQI相加以进 行补偿。
进一步地, 在这种情况下, 处理器 21还用于如果满足上调步长的第一 调整回退条件, 则将所述调整后的上调步长退回到初始的上调步长; 所述 上调步长的第一调整回退条件具体包括: 当下行传输的块误码率达到目标 值时; 或, 当补偿所述 CQI后, 接收到所述用户设备反馈的对于下行数据的 第一个否定应答信息时; 并根据回退后得到的初始的上调步长对用户设备 上报的 CQI进行补偿。
( 2 ) 当处理器 21判决的状态变化信息为所述第二变化信息, 则提升所 述 CQI的补偿量的下调步长, 而不改变补偿量的上调步长。 这种情况下, 处 理器 21在对 CQI进行补偿时,可以在输入装置 23接收到用户设备反馈的 ACK 时,在补偿量^^的基础上加上一个上调步长 , 然后将得到的补偿量与用 户设备上报的 CQI相加以进行补偿;还可以在输入装置 23接收到用户设备反 馈的 NACK时, 在补偿量^^的基础上减去上一个调整后的下调步长八^" , 然后将得到的补偿量与用户设备上报的 CQI相加以进行补偿。
进一步地, 处理器 21还可以用于如果满足下调步长的第二调整回退条 件, 则将所述调整后的下调步长退回到初始的下调步长; 所述下调步长的 第二调整回退条件具体包括: 当下行传输的块误码率达到目标值时; 或, 当补偿所述 CQI后,接收到所述用户设备反馈的对于下行数据的第一个肯定 应答信息时等; 并根据所述回退后得到的初始的下调步长, 对用户设备上 报的 CQI进行补偿。 本发明设备实施例三 所述的方法进行信道质量指示的调整, 其结构示意图如图 8所示, 包括: 第二判决单元 20 , 用于判决在第一通信系统和第二通信系统的共享资 源上, 第一通信系统信号受第二通信系统信号的干扰的状态变化信息, 所 述状态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或 从受干扰状态跳转为未受干扰状态的第二变化信息。
补偿量获取单元 21, 用于当所述第二判决单元 20判决的状态变化信息 为所述第一变化信息,分别确定信道质量指示 CQI在所述共享资源上的第一 补偿量和所述 CQI在所述第一通信系统的独享资源上的第二补偿量;
补偿单元 22, 用于根据所述补偿量获取单元 21获取的第一补偿量补偿 用户设备上报的 CQI得到在所述共享资源上的 CQI, 并根据补偿量获取单元 21获取的第二补偿量补偿用户上报的 CQI得到在独享资源上的 CQI, 则补偿 单元 22最终得到的共享资源上的 CQI为用户设备上报的 CQI与第一补偿量 之和, 补偿单元 22最终得到的独享资源上的 CQI为用户设备上报的 CQI与第 二补偿量之和。 需要说明的是,基站中还可以包括 CQI处理单元, 用于当补偿单元得到 补偿后的 CQI后, 可以根据补偿后的 CQI指导下行频谱资源上的调度和数据 传输; 当状态变化信息中为第二变化信息, 上述补偿单元 22不会对用户设 备上报的 CQI进行补偿, 而由 CQI处理单元直接根据用户设备上报的 CQI指 导用户设备的下行资源配置和下行传输。
本发明实施例的基站中, 当第二判决单元 30判决在第一通信系统和第 二通信系统的共享资源上, 第一通信系统信号受第二通信系统信号干扰的 状态变化信息中为第一变化信息, 即从未受干扰状态跳转为受干扰状态, 补偿量获取单元 312会分别确定 CQI在共享资源上的第一补偿量和 CQI在第 一通信系统的独享资源上的第二补偿量, 然后补偿单元 32根据第一补偿量 和第二补偿量补偿用户设备上报的 CQI分别得到在所述共享资源上和独享 资源上的 CQI。使得在 CQI调整的过程中,考虑到在网络资源共享的系统中, 一个系统信号对另一系统信号的干扰, 并在有干扰的时候补偿用户设备上 报的 CQI, 这样可以弥补由于信号干扰状态的变化造成的对信道质量的影 响, 进而才艮据补偿量得到的 CQI更接近实际信道质量, 则调整后的信道质量 指示能正确指导用户设备在下行资源上的调度和数据传输。
参考图 9所示, 在一个具体的实施例中, 基站除了可以包括如图 8所示 的结构外, 其中补偿量获取单元 31还可以通过子带 CQI获取单元 311、 第一 补偿确定单元 310和第二补偿确定单元 312来实现, 其中:
子带 CQI获取单元 311 , 用于向所述用户设备分别获取所述共享资源和 独享资源所包括的各个子带上的 CQI; 该子带 CQI获取单元 311可以向用户 设备下发子带 CQIs的反馈请求, 则并接收用户设备反馈的各个子带上的 CQI。
第一补偿确定单元 310,用于将所述子带 CQI获取单元 311获取的所述共 享资源所包括的各个子带上的 CQI的平均值,或加权后的平均值作为所述第 一补偿量。
第二补偿确定单元 312,用于将所述子带 CQI获取单元 311获取的所述独 享资源所包括的各个子带上的 CQI的平均值,或加权后的平均值作为所述第 二补偿量。
在本实施例中, 第一补偿确定单元 310还可以将所述用户设备反馈的所 述共享资源所包括的各个子带上的 CQI的最大值作为所述第一补偿量;而第 二补偿确定单元 312还可以将所述用户设备反馈的所述独享资源所包括的 各个子带上的 CQI的最大值作为所述第二补偿量。 本发明设备实施例四 所述的方法进行信道质量指示的调整, 其结构示意图与本发明设备实施例 二中基站的结构类似, 包括分别连接到总线上的存储器、 处理器、 输入装 置和输出装置, 其中:
存储器中用来储存从输入装置输入的数据, 且还可以储存处理器处理 数据的必要文件等信息; 输入装置和输出装置是基站与其他设备通信的端 口, 还可以包括基站外接的设备比如显示器、 键盘、 鼠标和打印机等。
本实施例中的处理器, 用于判决在第一通信系统和第二通信系统的共 享资源上, 第一通信系统信号受第二通信系统信号的干扰的状态变化信息, 所述状态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态跳转为未受干扰状态的第二变化信息; 当所述状态变化信 息为所述第一变化信息,分别确定信道质量指示 CQI在所述共享资源上的第 一补偿量和所述 CQI在所述第一通信系统的独享资源上的第二补偿量;然后 根据所述第一补偿量补偿用户设备上报的 CQI得到在所述共享资源上的 CQI,并根据第二补偿量补偿用户设备上报的 CQI得到在独享资源上的 CQI, 具体地, 处理器最终得到的共享资源上的 CQI为用户设备上报的 CQI与第一 补偿量之和, 最终得到的独享资源上的 CQI为用户设备上报的 CQI与第二补 偿量之和。 进一步地, 当状态变化信息中为第二变化信息, 则处理器不会 对用户设备上报的 CQI进行补偿, 而直接根据用户设备上报的 CQI指导用户 设备的下行资源配置和下行传输。
其中, 处理器在获取第一补偿量和第二补偿量时, 可以向所述用户设 备分别获取所述共享资源和独享资源所包括的各个子带上的 CQI, 具体地, 处理器可以控制输出装置向用户设备下发子带 CQIs的反馈请求, 则由输入 装置接收用户设备反馈的各个子带上的 CQI;然后处理器可以按照但不限于 如下几种方式来得到第一补偿量和第二补偿量:
( 1 )处理器将所述子带 CQI获取单元 311获取的所述共享资源所包括的 各个子带上的 CQI的平均值, 或加权后的平均值作为所述第一补偿量。 将所 述子带 CQI获取单元 311获取的所述独享资源所包括的各个子带上的 CQI的 平均值, 或加权后的平均值作为所述第二补偿量。
( 2 )处理器还可以将所述用户设备反馈的所述共享资源所包括的各个 子带上的 CQI的最大值作为所述第一补偿量;而将所述用户设备反馈的所述 独享资源所包括的各个子带上的 CQI的最大值作为所述第二补偿量。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分 步骤是可以通过程序来指令相关的硬件来完成, 该程序可以存储于一计算 机可读存储介质中, 存储介质可以包括: 只读存储器(ROM )、 随机存取存 储器(RAM )、 磁盘或光盘等。
以上对本发明实施例所提供的信道质量指示的调整方法及基站进行了 以上实施例的说明只是用于帮助理解本发明的方法及其核心思想; 同时, 对于本领域的一般技术人员, 依据本发明的思想, 在具体实施方式及应用 范围上均会有改变之处, 综上所述, 本说明书内容不应理解为对本发明的 限制。

Claims

权利要求
1、 一种信道质量指示的调整方法, 其特征在于, 包括:
判决在第一通信系统和第二通信系统的共享资源上, 第一通信系统信 号受第二通信系统信号干扰的状态变化信息, 所述状态变化信息为从未受 干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态跳转为未受 干扰状态的第二变化信息;
根据所述状态变化信息,调整信道质量指示 CQI的补偿量的上调步长或 下调步长;
根据所述调整后的上调步长或调整后的下调步长, 对用户设备上报的 CQI进行补偿。
2、 如权利要求 1所述的方法, 其特征在于, 所述根据所述状态变化信 息, 调整信道质量指示 CQI的补偿量的上调步长或下调步长, 具体包括: 当所述状态变化信息为所述第一变化信息,则提升所述 CQI的补偿量的 上调步长;
当所述状态变化信息为所述第二变化信息,则提升所述 CQI的补偿量的 下调步长。
3、 如权利要求 1或 2所述的方法, 其特征在于, 所述方法还包括: 如果满足所述上调步长的第一调整回退条件, 则将所述调整后的上调 步长退回到初始的上调步长;
所述上调步长的第一调整回退条件具体包括: 当下行传输的块误码率 达到目标值时; 或, 当补偿所述 CQI后, 接收到所述用户设备反馈的对于下 行数据的第一个否定应答信息时;
根据所述初始的上调步长, 对用户设备上报的 CQI进行补偿。
4、 如权利要求 1或 2所述的方法, 其特征在于, 所述方法还包括: 如果满足所述下调步长的第二调整回退条件, 则将所述调整后的下调 步长退回到初始的下调步长;
所述下调步长的第二调整回退条件具体包括: 当下行传输的块误码率 达到目标值时; 或, 当补偿所述 CQI后, 接收到所述用户设备反馈的对于下 行数据的第一个肯定应答信息时; 根据所述初始的下调步长, 对用户设备上报的 CQI进行补偿。
5、 一种信道质量指示的调整方法, 其特征在于, 包括:
判决在第一通信系统和第二通信系统的共享资源上, 第一通信系统信 号受第二通信系统信号的干扰的状态变化信息, 所述状态变化信息为从未 受干扰状态跳转为受干扰状态的第一变化信息, 或从受干扰状态跳转为未 受干扰状态的第二变化信息;
当所述状态变化信息为所述第一变化信息,分别确定信道质量指示 CQI 在所述共享资源上的第一补偿量和所述 CQI在所述第一通信系统的独享资 源上的第二补偿量;
根据所述第一补偿量补偿用户设备上报的 CQI得到在所述共享资源上 的 CQI, 并根据所述第二补偿量补偿用户设备上报的 CQI得到在所述独享资 源上的 CQI。
6、 如权利要求 5所述的方法, 其特征在于, 所述分别确定信道质量指 示 CQI在所述共享资源上的第一补偿量和所述 CQI在所述第一通信系统的 独享资源上的第二补偿量, 具体包括:
向所述用户设备分别获取所述共享资源和所述独享资源所包括的各个 子带上的 CQI;
将所述用户设备反馈的所述共享资源所包括的各个子带上的 C Q I的平 均值, 或加权后的平均值作为所述第一补偿量;
将所述用户设备反馈的所述独享资源所包括的各个子带上的 C Q I的平 均值, 或加权后的平均值作为所述第二补偿量。
7、 如权利要求 5所述的方法, 其特征在于, 所述分别确定信道质量指 示 CQI在所述共享资源上的第一补偿量和所述 CQI在所述第一通信系统的 独享资源上的第二补偿量, 具体包括:
向所述用户设备分别获取所述共享资源和所述独享资源所包括的各个 子带上的 CQI;
将所述用户设备反馈的所述共享资源所包括的各个子带上的 C Q I的最 大值作为所述第一补偿量;
将所述用户设备反馈的所述独享资源所包括的各个子带上的 C Q I的最 大值作为所述第二补偿量。
8、 一种基站, 其特征在于, 包括: 第一判决单元, 用于判决在第一通信系统和第二通信系统的共享资源 上, 第一通信系统信号受第二通信系统信号干扰的状态变化信息, 所述状 态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从受 干扰状态跳转为未受干扰状态的第二变化信息;
步长调整单元, 用于根据所述第一判决单元判决的状态变化信息, 调 整信道质量指示 CQI的补偿量的上调步长或下调步长;
第一 CQI补偿单元,用于根据所述步长调整单元调整后上的调步长或调 整后的下调步长, 对用户设备上报的 CQI进行补偿。
9、 如权利要求 8所述的基站, 其特征在于, 所述步长调整单元具体包 括:
第一步长调整单元, 用于当所述第一判决单元判决的状态变化信息为 所述第一变化信息, 则提升所述 CQI的补偿量的上调步长;
第二步长调整单元, 用于当所述第一判决单元判决的状态变化信息为 所述第二变化信息, 则提升所述 CQI的补偿量的下调步长。
10、 如权利要求 8或 9所述的基站, 其特征在于, 还包括:
调整回退单元, 用于如果满足所述上调步长的第一调整回退条件, 则 将所述调整后的上调步长退回到初始的上调步长; 所述上调步长的第一调 整回退条件具体包括: 当下行传输的块误码率达到目标值时; 或, 当补偿 所述 CQI后,接收到所述用户设备反馈的对于下行数据的第一个否定应答信 息时;
第二 CQI补偿单元,用于根据所述调整回退单元回退后得到的初始的上 调步长, 对用户设备上报的 CQI进行补偿。
11、 如权利要求 10所述的基站, 其特征在于,
所述调整回退单元, 还用于如果满足所述下调步长的第二调整回退条 件, 则将所述调整后的下调步长退回到初始的下调步长; 所述下调步长的 第二调整回退条件具体包括: 当下行传输的块误码率达到目标值时; 或, 当补偿所述 CQI后,接收到所述用户设备反馈的对于下行数据的第一个肯定 应答信息时;
所述第二 CQI补偿单元,还用于根据所述调整回退单元回退后得到的初 始的下调步长, 对用户设备上报的 CQI进行补偿。
12、 一种基站, 其特征在于, 包括: 第二判决单元, 用于判决在第一通信系统和第二通信系统的共享资源 上, 第一通信系统信号受第二通信系统信号的干扰的状态变化信息, 所述 状态变化信息为从未受干扰状态跳转为受干扰状态的第一变化信息, 或从 受干扰状态跳转为未受干扰状态的第二变化信息;
补偿量获取单元, 用于当所述第二判决单元判决的状态变化信息为所 述第一变化信息,分别确定信道质量指示 CQI在所述共享资源上的第一补偿 量和所述 CQI在所述第一通信系统的独享资源上的第二补偿量;
补偿单元, 用于根据所述补偿量获取单元获取的第一补偿量补偿用户 设备上报的 CQI得到在所述共享资源上的 CQI, 并根据所述补偿量获取单元 获取的第二补偿量补偿用户设备上报的 CQI得到在独享资源上的 CQI。
13、 如权利要求 12所述的基站, 其特征在于, 所述补偿量获取单元具 体包括:
子带 CQI获取单元,用于向所述用户设备分别获取所述共享资源和独享 资源所包括的各个子带上的 C Q I;
第一补偿确定单元,用于将所述子带 CQI获取单元获取的所述共享资源 所包括的各个子带上的 CQI的平均值,或加权后的平均值作为所述第一补偿 量;
第二补偿确定单元,用于将所述子带 CQI获取单元获取的所述独享资源 所包括的各个子带上的 CQI的平均值,或加权后的平均值作为所述第二补偿 量。
14、 如权利要求 13所述的基站, 其特征在于,
所述第一补偿确定单元, 还用于将所述用户设备反馈的所述共享资源 所包括的各个子带上的 CQI的最大值作为所述第一补偿量;
所述第二补偿确定单元, 还用于将所述用户设备反馈的所述独享资源 所包括的各个子带上的 CQI的最大值作为所述第二补偿量。
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