WO2012139441A1 - 一种进行干扰协调的方法、系统和设备 - Google Patents

一种进行干扰协调的方法、系统和设备 Download PDF

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Publication number
WO2012139441A1
WO2012139441A1 PCT/CN2012/071789 CN2012071789W WO2012139441A1 WO 2012139441 A1 WO2012139441 A1 WO 2012139441A1 CN 2012071789 W CN2012071789 W CN 2012071789W WO 2012139441 A1 WO2012139441 A1 WO 2012139441A1
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Prior art keywords
network side
side device
value
interference
power
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PCT/CN2012/071789
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English (en)
French (fr)
Inventor
徐婧
潘学明
沈祖康
宋月霞
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电信科学技术研究院
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Publication of WO2012139441A1 publication Critical patent/WO2012139441A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1215Wireless traffic scheduling for collaboration of different radio technologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • 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 present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for performing interference coordination. Background technique
  • the time division duplex (TDD) mode means that the uplink and downlink use the same working frequency band, and the uplink and downlink signals are transmitted at different time intervals.
  • the guard interval (GP ) means that the frequency division duplex ( FDD ) mode means that the uplink and downlink use different working bands, and can perform uplink and downlink on different frequency carriers at the same time.
  • GB guard bandwidth
  • a radio frame has a length of 10 ms, and includes 10 subframes of a special subframe and a regular subframe. Each subframe is Lms.
  • the special sub-frame is divided into three sub-frames: a Downlink Pilot Time Slot (DwPTS) is used to transmit a Primary Synchronization Signal (PSS), a Physical Downlink Control Channel (PDCCH), and a physical downlink control channel (PDCCH).
  • DwPTS Downlink Pilot Time Slot
  • PSS Primary Synchronization Signal
  • PDCCH Physical Downlink Control Channel
  • PDCCH physical downlink control channel
  • Hybrid automatic request redirection indication channel Physical HARQ Indication Channel, PHICH, physical control format indication channel (PCFICH), physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), etc.; GP is used for Uplink Pilot Time Slot (UpPTS) is used to transmit Sounding Reference Signal (SRS) and Physical Random Access Channel (PRACH). )Wait.
  • the regular subframe includes an uplink subframe and a downlink subframe, and is used for transmitting an uplink/downlink control channel and service data. In a radio frame, two special subframes (located in subframes 1 and 6) or a special subframe (located in subframe 1) can be configured.
  • Subframe 0 and subframe 5 and DwPTS subframes in special subframes are always used for downlink transmission.
  • Subframe 2 and UpPTS subframes in special subframes are always used for uplink transmission.
  • Other subframes can be configured as needed. For uplink transmission or downlink transmission.
  • the uplink and downlink transmissions use the same frequency resource, and the uplink/downlink signals are transmitted on different subframes.
  • the division of uplink and downlink subframes is static or semi-static, and the usual practice is in the network.
  • the uplink and downlink subframe ratios are determined and remain unchanged according to the cell type and the approximate service ratio. This is a relatively simple approach in the context of large coverage of macro cells, and is also more effective.
  • a low-power base station such as a home base station (Home NodeB) is deployed to provide local small coverage.
  • Home NodeB home base station
  • the number of users is small, and the user service demand changes greatly, so the ratio of uplink and downlink services of the cell is required.
  • the cross-slots of adjacent cells may be disturbed.
  • the femto cell is used for the uplink signal reception, and then the two cells appear: the base station-base station is interfered, and the femto base station directly receives the downlink signal of the Macro base station, which will be severe A shield that affects the uplink signal of the local UE (Local UE, L-UE) received by the femto base station.
  • L-UE local UE
  • the adjacent cells herein may be geographically adjacent cells (shown in Figure 1B) that use the same TDD carrier, or cells that are geographically overlapping or using neighboring TDD carriers (shown in Figure 1C).
  • the demand ratio of uplink and downlink services is dynamically changed, there is no solution to cross-slot interference.
  • the embodiments of the present invention provide a method, a system, and a device for performing interference coordination, which are used to reduce slot interference in a scenario in which the uplink and downlink traffic ratio requirements are dynamically changed.
  • the first network side device determines the interference coordination information, and the interference coordination information is used to notify the second network side device that is located around the first network side device to perform interference coordination according to the interference coordination information.
  • the first network side device sends the interference coordination information to the second network side device.
  • the second network side device receives the interference coordination information determined by the first network side device, where the second network side device is a network side device that is located around the first network side device;
  • the second network side device adjusts a downlink transmission power value according to the received interference coordination information.
  • An information determining module configured to determine interference coordination information, where the interference coordination information is used to notify the second network side device that is located around the first network side device to perform interference coordination according to the interference coordination information;
  • a sending module configured to send the interference coordination information to the second network side device.
  • a receiving module configured to receive the interference coordination information determined by the first network side device, where the second network side device is a network side device that is located around the first network side device;
  • the processing module is configured to adjust a downlink transmit power value according to the received interference coordination information.
  • a system for performing interference coordination includes: a first network side device, configured to determine interference coordination information, and send interference coordination information to a second network side device that is around the first network side;
  • a second network side device configured to adjust a downlink transmit power value according to the received interference coordination information.
  • the device can notify the second network side device of the interference coordination information for performing the interference coordination, so as to reduce the time slot interference caused by the difference between the uplink and downlink configurations in the scenario that the uplink and downlink service ratios are dynamically changed; System stability and performance.
  • 1A is a schematic diagram of a frame structure of a TD-LTE system
  • FIG. 1B is a schematic diagram of cross-slot interference when using the same TDD carrier
  • 1C is a schematic diagram of cross-slot interference when using adjacent TDD carriers
  • FIG. 2 is a schematic structural diagram of a system for performing interference coordination according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a first network side device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a second network side device according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for performing interference coordination according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a second method for performing interference coordination according to an embodiment of the present invention. detailed description
  • the first network side device sends the interference coordination information to the second network side device that is located around the first network side device, and is configured to notify the second network side device to perform interference coordination according to the interference coordination information.
  • the slot coordination information caused by the difference between the uplink and downlink configurations is reduced in the scenario where the uplink and downlink traffic ratios are dynamically changed in the scenario where the uplink and downlink traffic ratios are dynamically changed.
  • the embodiments of the present invention can be applied to a TDD system (such as a TD-LTE system), and can also be applied to other systems that need to dynamically adjust uplink and downlink configurations of a subframe, such as a TD-SCDMA system and its subsequent evolution system, and a microwave storage. Take the Worldwide Interoperability for Microwave Access (WiMAX) system and its subsequent evolution systems.
  • a TDD system such as a TD-LTE system
  • TD-SCDMA system and its subsequent evolution system such as a TD-SCDMA system and its subsequent evolution system
  • microwave storage Take the Worldwide Interoperability for Microwave Access (WiMAX) system and its subsequent evolution systems.
  • the system for performing interference coordination in the embodiment of the present invention includes: a first network side device 10 and a second network side device 20.
  • the first network side device 10 is configured to send the interference coordination information to the second network side device 20 that is around the first network side 10 (ie, the first network side device 10 is interfered by the second network side device 20) Interference coordination information.
  • the first network side device 10 may determine the interference coordination information in the cell uplink and downlink configuration; and may also determine the interference coordination information after receiving the high layer notification.
  • the second network side device 20 is configured to receive the interference coordination information, and adjust the downlink transmission power value according to the received interference coordination information.
  • the second network side device 20 in the vicinity of the first network side device 10 may be all the network side devices in the vicinity of the first network side device; or may be in the vicinity of the first network side device and on the first network side device 10 A network side device that generates interference.
  • the first network side device 10 may determine the network side device that is interfered by the first network side device in the following manner: The first network side device 10 measures the uplink and downlink configuration information of the surrounding network side device, and further determines that the cross time slot is caused. Interference network side device; or
  • the surrounding network device signals the uplink and downlink configuration information of the network device around the first network side device 10, and further determines the network side device that causes the cross slot to be disturbed; or
  • the first network side device 10 notifies the surrounding network side device of its own uplink and downlink configuration or pre-configuration signaling, and the surrounding network side device determines whether cross-slot interference is formed according to this information, and feeds back whether the information is subject to interference.
  • the embodiment of the present invention is not limited to the foregoing manner, and other embodiments capable of determining the network side device that is interfered by the first network side device are applicable to the embodiment of the present invention.
  • the peripheral base station deployment situation may be measured first, for example, determining the number of effective interference base stations and the respective reference signal receiving powers (Reference Signal Receiving)
  • the power, RSRP) value, and/or the base station configuration information is exchanged with the neighboring base station, where the configuration information includes, but is not limited to, at least one of the following information: transmit power, resource configuration information.
  • the first network side device 10 When the first network side device 10 needs to re-do the uplink and downlink configuration of the local area according to the service demand or the interference effect of other cells or other reasons, this configuration may cause a problem of interference between the base stations, for example, the neighboring cell subframe n is In the downlink subframe, when the first network side device 10 configures the subframe n to be an uplink subframe, the neighboring region may interfere with the reception of the data in the local area. The first network side device 10 needs to consider the interference effect to limit the configuration of this subframe or coordinate the downlink power configuration of the interference neighboring cell.
  • the first network side device 10 can send the interference coordination information to the second network side device 20 in one of an air interface, an X2 interface, an S1 interface, and a terminal forwarding.
  • the terminal forwarding mode may be that the first network side device 10 sends the interference coordination information to the terminal, and the terminal forwards the information to the second network side device 20.
  • the embodiment of the present invention is not limited to the foregoing manner of transmitting interference coordination information, and other methods capable of transmitting interference coordination information are applicable to the embodiments of the present invention.
  • the first network side device 10 configures the uplink and downlink subframes of the cell
  • the detected subframe is received
  • the interference value is higher than the interference value that the first network side device 10 can bear, configuring the subframe as a downlink subframe or not scheduling on the subframe or improving the transmission power of the scheduling user; if the detected subframe is received
  • the interference value is not higher than the interference value that the first network side device 10 can bear, and the subframe is configured as an uplink subframe.
  • the first network side device 10 may monitor some or all of the subframes that need to be configured as uplinks.
  • the second network side device 20 may adjust the downlink of the downlink subframe that generates the interference to the first network side device 10. Transmit power value or adjust the downlink transmit power value of all downlink subframes
  • the interference coordination information may be information that requires the second network side device to make adjustments.
  • the interference coordination information may be one of the following information: a maximum transmit power threshold, a disturbance tolerance threshold, and a power adjustment value. The following is introduced separately.
  • the interference coordination information is the maximum transmit power threshold.
  • the maximum transmit power threshold allows the interference level to be within the capability of the first network side device 10.
  • the maximum transmit power threshold may be used to limit the transmit power of all downlink subframes of the second network side device 20, or may be used only to limit the downlink subframes that the second network side device 20 has influence on other cells.
  • the capability of the first network side device 10 may be determined by the network side device according to actual conditions, or the device factory configuration, or standard convention.
  • the first network side device 10 determines, according to the device information of the first network side device 10 and/or the device information of the second network side device 20, the maximum transmit power threshold value of the second network side device 20, and The maximum transmit power threshold is used as the interference coordination information;
  • the maximum transmit power threshold is used to limit the transmit power of all downlink subframes of the second network side device 20 or the downlink subframes that are interfered with the neighbor cells in the second network side device.
  • the device information of the first network side device 10 includes, but is not limited to, at least one of the following information: spectrum allocation information, resource scheduling information, and interference tolerance value.
  • the device information of the second network side device 20 includes, but is not limited to, at least one of the following information:
  • the first network side device 10 determines the device information of the second network side device 20, such as measurement; signaling.
  • the device information of the first network side device 10 and the device information of the second network side device 20 may be measurement acquisition, or signaling, or standard convention.
  • ACIR bs _ bs ⁇ The interference threshold of the device; ACLR A ACS B , where A LR A is the adjacent channel leakage power radio of the second network side device 20, B is the first The adjacent channel selectivity of the network side device 10; P at ⁇ oss is the path loss value; MCL is the minimum coupling loss value.
  • Ia ⁇ b is the interference threshold of the second network side device 20 that the first network side device 10 can withstand
  • the value may be a protocol agreement, or the device is factory set, or calculated according to actual conditions. Obtain (such as the received power value of the wanted signal and the demodulation threshold, and calculate the acceptable interference threshold).
  • the first network side device 10 determines Ja ⁇ b according to the total interference threshold that the first network side device can bear; wherein, ⁇ is not greater than the total interference power value that the first network side device can bear.
  • the first network side device 10 has a plurality of ways to determine Ja ⁇ b according to the total interference threshold that the first network side device can bear. Several types are listed below.
  • the first network side device 10 multiplies the total interference power value that the first network side device 10 can withstand by the weighting parameter corresponding to each second network side device 20, and obtains the corresponding corresponding to the second network side device 20. -> B.
  • the weighting parameter corresponding to each second network side device 20 may be determined according to the interference condition of the first network side device 10 by the second network side device 20, for example, the larger the interference, the larger the weighting parameter is.
  • the total interference power value that the first network side device 10 can bear is multiplied by the weighting parameter corresponding to each of the second network side devices 20, and each of the second network side devices 20 is correspondingly obtained. That is to say, the corresponding -> B corresponding to each second network side device 20 may be the same or different.
  • the first network side device 10 divides the total interference power value that the first network side device 10 can withstand by the number of the second network side device, and obtains the corresponding corresponding to the second network side device 20. That is to say, the corresponding a -> s of each second network side device 20 is the same in this manner.
  • the interference formed by the second network side device 20 is outside the receiving bandwidth of the first network side device 10, it is 0;
  • the ACLR and the CS are determined according to at least one of the following manners, and the ACIRb " s is determined according to the ACLR and the CS;
  • the way to determine ACLR and CS includes: Determine ACLR and / or CS based on empirical values;
  • the CS is determined by the higher layer through signaling notification
  • selecting a ⁇ CJR from the plurality of ⁇ CJRs according to the frequency band allocation situation or the resource scheduling situation;
  • the correspondence between the band allocation situation and the reference value and/or the correspondence between the resource scheduling situation and the reference value may be preset, and then the band allocation according to the corresponding relationship may be determined.
  • the reference value corresponding to the situation or resource scheduling situation refer to the 3GPP TS 36.101 or 3GPP TS 36.104 protocol.
  • the correspondence between the frequency band allocation and the empirical value and/or the correspondence between the resource scheduling situation and the empirical value may be preset, and then the frequency band may be determined according to the corresponding relationship.
  • the interference coordination information is the threshold of the interference tolerance. Specifically, the first network side device 10 determines Ia ⁇ b , and uses Ia ⁇ b as the interference coordination information; where, Ia ⁇ b is the threshold value of the second network side device interference that the first network side device can bear. .
  • the second network side device 20 may determine the downlink transmission power value to be adjusted according to formula 3 or formula 4:
  • P, x ⁇ DL ⁇ UL + A CIR bs . bs + ax(pathlossMCL) Equation 4; where Ptx is the downlink transmit power value to be adjusted; I DL ⁇ UL is the received first network side device 10 The minimum threshold of the interference threshold or the received interference threshold of the plurality of interfered network side device notifications; 1
  • a CLR A A CS B where A CLR A is the adjacent channel leakage power ratio of the second network side device 20, C3 ⁇ 4 is the adjacent channel selectivity value of the first network side device 10 ; ⁇ 7/0SS is the path loss value; Minimum coupling loss value.
  • Ia ⁇ b is the interference threshold of the second network side device 20 that the first network side device 10 can withstand
  • the value may be a protocol agreement, or the device is factory set, or calculated according to actual conditions. Obtain (such as the received power value of the wanted signal and the demodulation threshold, and calculate the acceptable interference threshold).
  • the first network side device 10 determines Ja ⁇ b according to the total interference threshold that the first network side device can bear; wherein, ⁇ is not greater than the total interference power value that the first network side device can bear.
  • the first network side device 10 has a plurality of manners for determining the value of the Ja ⁇ b according to the total interference threshold that the first network side device can bear. For details, refer to the first method, and details are not described herein again.
  • the interference formed by the second network side device 20 is outside the bandwidth received by the first network side device 10
  • a CIR bs-bs is 0;
  • the ACLR and the CS are determined according to at least one of the following manners, and the ACIRb " s is determined according to the ACLR and the CS;
  • the way to determine ACLR and CS includes:
  • this value may be measured, or signaled, or a combination of the two.
  • This value includes factors such as penetration loss, antenna gain, and so on.
  • the MCL can use the empirical value (obtained by simulation), or the factory configuration of the device, or the protocol.
  • the interference coordination information is a power adjustment value.
  • the second network side device 20 that is located around the first network side device 10 is a network side device that generates interference to the first network side device 10.
  • the power adjustment value is greater than 0, it indicates that the power is adjusted upwards; if the power adjustment value is less than 0, it indicates that the power is adjusted downward; if the power adjustment value is equal to 0, it indicates that the power does not need to be adjusted.
  • the second network side device 20 is a network side device that generates interference on the first network side device 10 as an example.
  • the first network side device 10 determines the power adjustment value, and uses the power adjustment value as the interference coordination information c . There are many ways for the first network side device 10 to determine the power adjustment value, and several types are listed below.
  • P A ⁇ l A ⁇ B - RSRP A , 0) Equation 6; where P A is the power reference value; J A ⁇ B is the threshold value of the second network side device interference that the first network side device can withstand RSRP A is a reference signal received power value of the second network measuring device measured by the first network side device; the first network side device 10 determines the power adjustment value according to the power reference value.
  • Ia ⁇ b is the interference threshold of the second network side device 20 that the first network side device 10 can withstand
  • the value may be a protocol agreement, or the device is factory set, or calculated according to actual conditions. Obtain (such as the received power value of the wanted signal and the demodulation threshold, and calculate the acceptable interference threshold).
  • the first network side device 10 determines Ja ⁇ b according to the total interference threshold that the first network side device can bear; wherein, ⁇ 4 ⁇ is not greater than the total interference power value that the first network side device can bear.
  • the first network side device 10 has a plurality of manners for determining the value of the Ja ⁇ b according to the total interference threshold that the first network side device can bear. For details, refer to the first method, and details are not described herein again.
  • the first network side device 10 selects the smallest value from the determined power reference values corresponding to each of the second network side devices 20 as the power reference value for determining the power adjustment value, and determines each according to the power reference value.
  • the first network side device 10 averages the power reference value corresponding to each of the determined second network side devices 20 as a power reference value for determining the power adjustment value, and determines each second network side device 20 according to the power reference value. Corresponding power adjustment value.
  • the first network side device 10 can also determine the power adjustment value in one of the following manners.
  • the first network side device 10 may use the power reference value as a power adjustment value corresponding to each of the second network side devices 20 that generate the interference.
  • the first network side device 10 selects a power adjustment value from the power adjustment value set according to the power reference value. Preferably, if the first network side device 10 can withstand the interference value greater than the measured interference value, select a value from the power adjustment set that is closest to the power reference value and not greater than 0 as the power adjustment value. If the first network side device 10 can withstand the interference value not greater than the measured interference value, a value closest to the power reference value and greater than 0 is selected from the power adjustment set as the power adjustment value.
  • the power adjustment set is p 2 ⁇ l0dBm, 5dBm, ldBm -ldBm ⁇ , assuming that the power reference value is 8, you can select 1 OdBm as the power adjustment value.
  • the values in the power adjustment set can be determined as needed.
  • Mode A3 The first network side device 10 selects a power adjustment step value from the power adjustment step value set according to the power reference value, and uses the selected power adjustment step value as the power adjustment value.
  • the first network side device 10 adjusts the step value in the step value set according to the preset range value and power. Correspondence relationship, determining the step value corresponding to the range to which the power reference value belongs. Correspondingly, the second network side device 20 adjusts only one step size at a time.
  • the values and correspondences in the power adjustment step size set may be determined as needed.
  • the first network side device 10 determines a power reference value according to Equation 7 or Equation 8, and determines a power adjustment value according to the power reference value;
  • PA rnin ⁇ / ⁇ ⁇ 5 - 0) Equation 8; where is the second network side device interference value measured by the first network side device; JA ⁇ B is the second network side that the first network side device can bear The threshold of the device's interference.
  • the first network side device 10 selects the smallest value from the determined power reference values corresponding to each of the second network side devices 20 as the power reference value for determining the power adjustment value, and determines each according to the power reference value.
  • the first network side device 10 averages the power reference value corresponding to each of the determined second network side devices 20 as a power reference value for determining the power adjustment value, and determines each second network side device 20 according to the power reference value. Corresponding power adjustment value.
  • the first network side device 10 can determine the power adjustment value in one of the following manners.
  • the first network side device 10 may use the power reference value as a power adjustment value corresponding to each of the second network side devices 20 that generate the interference.
  • the first network side device 10 selects a power adjustment value from the power adjustment value set according to the power reference value. Preferably, if the first network side device 10 can withstand the interference value greater than the measured interference value, select a value from the power adjustment set that is closest to the power reference value and not greater than 0 as the power adjustment value. If the first network side device 10 can withstand the interference value not greater than the measured interference value, a value closest to the power reference value and greater than 0 is selected from the power adjustment set as the power adjustment value.
  • the power adjustment set is p 2 ⁇ l0dBm, 5dBm, ldBm -ldBm ⁇ , assuming that the power reference value is 8, you can select 1 OdBm as the power adjustment value.
  • the values in the power adjustment set can be determined as needed.
  • Mode B3 The first network side device 10 selects a power adjustment step value from the power adjustment step value set according to the power reference value, and uses the selected power adjustment step value as the power adjustment value.
  • the first network side device 10 determines the step value corresponding to the range to which the power reference value belongs according to the correspondence between the preset range value and the step value in the power adjustment step value set.
  • the values and correspondences in the power adjustment step size set may be determined as needed.
  • the 10-General interference value measured first network device ⁇ obtained with the first network-side device can withstand-General
  • the interference power value is made to be poor, and the power adjustment sum value is determined according to the difference; and the power adjustment value of each of the second network side devices 20 that generate the interference is determined according to the power adjustment sum value.
  • the first network side device 10 may divide the difference by the number of the second network side devices 20 that generate the interference to obtain a power reference value, and determine, according to the power reference value, each of the second network side devices 20 that generate the interference.
  • the power adjustment value; or the first network side device 10 determines the weight of each second network side device 20, and multiplies the difference by the weight of each second network side device 20 to obtain a power reference value, according to the power reference.
  • the value determines the power adjustment value of each of the second network side devices 20 that generate the interference.
  • the first network side device 10 can determine the power adjustment value in one of the following manners.
  • the mode Cl the first network side device 10 uses the power adjustment value as a power adjustment value corresponding to each of the second network side devices that generate the interference.
  • the power reference value is obtained, and the power adjustment value of each of the second network side devices 20 that generate the interference is determined according to the power reference value.
  • the first network side device i 0 takes the power adjustment value as the power adjustment value of each of the second network side devices 20 that generate the interference. That is, the power adjustment values of each of the second network side devices that generate the interference are the same.
  • the power reference value is obtained by multiplying the difference by the weight of each second network side device, and the power adjustment value of each second network side device 20 generating the interference is determined according to the power reference value.
  • a network side device 10 uses the power adjustment value as a power adjustment value corresponding to the second network side device 20 that generates the interference. That is, the power adjustment values of each of the second network side devices that generate the interference are independent.
  • the first network side device 10 selects a power adjustment value from the power adjustment value set according to the power adjustment value.
  • the first network side device 10 can withstand the interference value greater than the measured interference value, select a value from the power adjustment set that is closest to the power reference value and not greater than 0 as the power adjustment value. If the first network side device 10 can withstand the interference value not greater than the measured interference value, a value closest to the power reference value and greater than 0 is selected from the power adjustment set as the power adjustment value.
  • the power adjustment set is p 2 ⁇ l0dBm, 5dBm, ldBm -ldBm ⁇ , assuming that the power reference value is 8, you can select 1 OdBm as the power adjustment value.
  • the first network side device 10 only needs to select one;
  • a network side device 10 needs to be selected once according to the value corresponding to each of the second network side devices 20.
  • the first network side device 10 selects a power adjustment step value from the power adjustment step value set according to the power adjustment value, and uses the selected power adjustment step value as the power adjustment value.
  • the first network side device 10 determines the step value corresponding to the range to which the power reference value belongs according to the correspondence between the preset range value and the step value in the power adjustment step value set.
  • the second network side device 20 adjusts only one step size at a time.
  • the values and correspondences in the power adjustment step size set may be determined as needed.
  • the power reference value is obtained by dividing the difference by the number of the second network side devices 20 that generate the interference, and determining the power adjustment value of each of the second network side devices 20 that generate the interference according to the power reference value, A network side device 10 only needs to select one;
  • the first The network side device 10 needs to select once according to the value corresponding to each of the second network side devices 20.
  • the first network side device 10 can periodically send the interference coordination information according to the set time.
  • the specific time can be set as needed.
  • the network side device in the embodiment of the present invention may be a station (such as a macro base station, a home base station, etc.), an RN (relay) device, or other network side devices.
  • a station such as a macro base station, a home base station, etc.
  • RN relay
  • two network side devices and a method for performing interference coordination are also provided in the embodiments of the present invention. Since the principles of the devices and methods for solving the problem are similar to those for performing interference coordination, the devices and methods are The implementation can be seen in the implementation of the system, and the repetition will not be repeated.
  • the first network side device in the embodiment of the present invention includes: an information determining module 100 and a sending module 110.
  • the information determining module 100 is configured to determine interference coordination information.
  • the sending module 110 is configured to send the interference coordination information determined by the information determining module 100 to the second network side device that is located around the first network side, to notify the second network side device to perform interference coordination according to the interference coordination information.
  • the information determining module 100 determines, according to the device information of the first network side device and/or the device information of the second network side device, the maximum transmit power threshold value of the second network side device, and the maximum transmit power threshold.
  • the limit value is used as the interference coordination information
  • the maximum transmit power threshold is used to limit the transmit power of all downlink subframes of the second network side device or the downlink subframes of the second network side device that are interfered with the neighboring cell.
  • the information determining module 100 determines the maximum transmit power threshold according to the following formula:
  • ⁇ nax_/x 1 A ⁇ B + fiber X hloSS, MCL)
  • max - te the maximum transmit power threshold
  • a LR A is the adjacent channel leakage power ratio of the second network side device
  • is the adjacent channel selectivity value of the first network side device
  • P ATHLOSS is Path loss value
  • the information determining module 100 determines ⁇ 4 - , and uses ⁇ as the interference coordination information;
  • Ia ⁇ b is a threshold value of the second network side device that can be tolerated by the first network side device.
  • the information determining module is specifically configured to:
  • the information determining module 100 determines the difference according to the following formula, and determines the power adjustment value according to the power reference value;
  • P A is the power reference value
  • J A ⁇ B is the second network side that the first network side device can withstand Threshold value of device interference
  • RSRP A is the reference signal received power value of the second network measuring device measured by the first network side device.
  • the information determining module 100 has a power reference value, and determines a power adjustment value according to the power reference value; PA - A ⁇ B ⁇ A measurement; or ⁇ 4 - ⁇ A ⁇ B - IA measurement , ; wherein - is the first The second network side device interference value measured by the network side device; J A ⁇ B is a threshold value of the second network side device interference that the first network side device can bear.
  • the information determining module 100 selects a minimum value from the determined power reference values corresponding to each second network side device as a power reference value for determining the power adjustment value, and determines each second according to the power reference value. a power adjustment value corresponding to the network side device; or averaging from the determined power reference value corresponding to each second network side device as a power reference value for determining the power adjustment value, and determining each second network according to the power reference value The power adjustment value corresponding to the side device.
  • the information determining module 100 compares the measured total interference value with the total interference power value that the first network side device can bear, determines the power adjustment sum value according to the difference, and determines according to the power adjustment total value.
  • the power adjustment value of each of the second network side devices that generate the interference is a predefined value that is less than or not.
  • the information determining module 100 divides the difference by the number of the second network side devices that generate the interference to obtain a power reference value, and determines, according to the power reference value, a power adjustment value of each of the second network side devices that generate the interference; or Determine each second The weight of the network side device is multiplied by the weight of each second network side device to obtain a power reference value, and the power adjustment value of each second network side device that generates the interference is determined according to the power reference value.
  • the information determining module 100 uses the power reference value as a power adjustment value corresponding to each of the second network side devices that generate the interference; or selects the power adjustment value from the power adjustment value set according to the power reference value; or according to the power reference.
  • the value selects the power adjustment step value from the power adjustment step value set, and uses the selected power adjustment step value as the power adjustment value.
  • the transmitting module 110 periodically transmits the interference coordination information.
  • the information determining module 100 determines Ja ⁇ b according to the total interference threshold that the first network side device can bear; wherein, ⁇ is not greater than the total interference power value that the first network side device can bear.
  • the information determining module 100 multiplies the total interference power value that the first network side device can bear by the weighting parameter corresponding to each second network side device, to obtain ->B corresponding to the second network side device; or The total interference power value that the first network side device can withstand is divided by the number of the second network side device to obtain -> ⁇ corresponding to the second network side device.
  • the sending module 110 sends the interference coordination information to the second network side device in one of an air interface, an X2 interface, an S1 interface, and a terminal forwarding.
  • the first network side device of the embodiment of the present invention may further include: a configuration module 120.
  • the configuration module is configured to monitor the interference that needs to be configured for the uplink subframe after the interference coordination information is sent, and configure the subframe according to the monitoring result to reduce the interference received by the configured subframe.
  • the configuration module 120 configures the subframe as a downlink subframe or does not schedule or improve the subframe. Scheduling the transmission power of the user; if the monitored subframe receives a interference value that is not higher than the interference value that the first network side device can withstand, the configuration module
  • the subframe is configured as an uplink subframe.
  • the configuration module 120 monitors some or all of the subframes that need to be configured as uplinks.
  • the second network side device of the embodiment of the present invention includes: a receiving module 200 and a processing module 210.
  • the receiving module 200 is configured to receive the interference coordination information determined by the first network side device, where the second network side device is a network side device that is located around the first network side device;
  • the processing module 210 is configured to adjust the downlink transmit power value according to the interference coordination information received by the receiving module 200 or discard the interference coordination information received by the receiving module 200.
  • the processing module 210 adjusts the downlink transmit power value of the downlink subframe generated by the first network side device or adjusts the downlink transmit power value of all the downlink subframes when adjusting the downlink transmit power value.
  • the processing module 210 transmits the power value in the whole downlink, and the interference coordination information is the interference threshold
  • the maximum transmit power threshold is determined according to the received interference coordination information, according to the maximum transmit power threshold. value. Adjust the downlink transmission power value.
  • P I DL ⁇ UL + max(pathloss, MCL) .
  • P tx I DL ⁇ UL + ACIR bs _ bs + max(pathloss, MCL) .
  • I DL ⁇ UL is The received threshold value of the second network side device that can be tolerated by the first network side device or the smallest of the received interference thresholds of the plurality of interfered network side devices
  • the first type of network side device ie, the network side device of FIG. 3
  • the second network side device ie, the network side device in FIG. 4
  • the device and the module of the second network side device are in one entity, and the function of the first network side device or the second network side device is selected as needed.
  • the first method for performing interference coordination in the embodiment of the present invention includes the following steps:
  • Step 501 The first network side device determines the interference coordination information.
  • Step 502 The first network side device sends the interference coordination information to the second network side device that is located around the first network side, and is configured to notify the second network side device to perform interference coordination according to the interference coordination information.
  • the second network side device 20 in the vicinity of the first network side device 10 may be all the network side devices in the vicinity of the first network side device; or may be in the vicinity of the first network side device and on the first network side device 10 A network side device that generates interference.
  • the first network side device may first measure the deployment situation of the neighboring base station, for example, determine the number of effective keen base stations and the respective RSRPs, and/or exchange base station configuration information with the neighboring base stations, where the configuration information includes but not Limited to at least one of the following information: transmit power, resource configuration information.
  • the first network side device When the first network side device needs to perform the uplink and downlink configuration of the local area according to the service demand or the interference effect of other cells or other reasons, this configuration may cause a problem of interference between the base stations, for example, the neighboring cell subframe n is the downlink.
  • the neighboring area In the subframe, when the first network side device configures the subframe n to be an uplink subframe, the neighboring area may interfere with the local area to receive data. The first network side device needs to consider the interference effect to limit the configuration of this subframe or coordinate the downlink power configuration of the interference neighboring cell.
  • the first network side device may send the interference coordination information to the second network side device by using one of an air interface, an X2 interface, an S1 interface, and a terminal forwarding.
  • the terminal forwarding mode may be that the first network side device sends the interference coordination information to the terminal, and the terminal forwards the information to the second terminal.
  • Network side device may be that the first network side device sends the interference coordination information to the terminal, and the terminal forwards the information to the second terminal.
  • the embodiment of the present invention is not limited to the foregoing manner of transmitting interference coordination information, and other methods capable of transmitting interference coordination information are applicable to the embodiments of the present invention.
  • the method further includes:
  • Step 503 The first network side device monitors the interference that needs to be configured in the uplink subframe, and configures the subframe according to the monitoring result to reduce the interference received by the configured subframe.
  • step 503 when the first network side device configures the uplink and downlink subframes of the cell, if the detected subframe receives a higher interference value than the first network side device can withstand, the sub-interference value
  • the frame is configured as a downlink subframe or is not scheduled on the subframe or improves the transmission power of the scheduled user. If the detected subframe receives a interference value that is not higher than the interference value that the first network side device can bear, the subframe is used.
  • the frame is configured as an uplink subframe.
  • the first network side device may monitor some or all of the subframes that need to be configured as uplink.
  • the interference coordination information may be information that requires the second network side device to make adjustments.
  • the interference coordination information may be one of the following information: a maximum transmit power threshold, a disturbance tolerance threshold, and a power adjustment value. The following is introduced separately.
  • the interference coordination information is the maximum transmit power threshold.
  • the maximum transmit power threshold allows the interference level to be within the capacity of the first network side device.
  • the maximum transmit power threshold may be used to limit the transmit power of all downlink subframes of the second network side device, or may be used only to limit the downlink subframes that the second network side device has influence on other cells.
  • the capability of the first network side device may be determined by the network side device according to actual conditions, or the device factory configuration, or a standard convention.
  • the first network side device determines, according to device information of the first network side device and/or device information of the second network side device, a maximum transmit power threshold value that allows the second network side device, and The maximum transmit power threshold is used as the interference coordination information;
  • the maximum transmit power threshold is used to limit the transmit power of all downlink subframes of the second network side device or the downlink subframes of the second network side device that are interfered with the neighboring cell.
  • the device information of the first network side device includes, but is not limited to, at least one of the following information: spectrum allocation information, resource scheduling information, and interference tolerance value.
  • the device information of the second network side device includes but is not limited to at least one of the following information:
  • a path loss value, a reference signal received power value, spectrum allocation information, and resource scheduling information between the second network side device and the first network side device is not limited.
  • the device information of the first network side device and the device information of the second network side device may be measurement acquisition, or signaling notification, or a standard convention.
  • the first network side device may determine a maximum transmit power threshold according to Equation 1 or Equation 2.
  • Ia ⁇ b is the interference threshold of the second network side device that the first network side device can bear.
  • the value can be the protocol convention, or the factory setting of the device, or calculated according to the actual situation (such as the received power value of the useful signal and the demodulation threshold, and the acceptable interference threshold is calculated).
  • the first network side device determines ⁇ 4 ⁇ i? according to the total interference threshold that the first network side device can bear; wherein, Ia ⁇ B is not greater than the total interference power value that the first network side device can bear. .
  • the first network side device has a plurality of ways to determine Ja ⁇ B according to the total interference threshold that the first network side device can bear. Several types are listed below.
  • the first network side device multiplies the total interference power value that the first network side device can bear by the weighting parameter corresponding to each second network side device to obtain ->B corresponding to the second network side device.
  • the weighting parameter corresponding to each second network side device may be determined according to the interference condition of the second network side device by the second network side device, for example, the larger the interference, the larger the weighting parameter is.
  • the total interference power value that the first network side device can bear is multiplied by the weighting parameter corresponding to each second network side device, respectively, and the corresponding -> B corresponding to each second network side device is obtained. That is to say, the corresponding ⁇ 8 of each second network side device may be the same or different.
  • the first network side device divides the total interference power value that the first network side device can withstand by the number of the second network side device, and obtains >B corresponding to the second network side device. That is to say, the corresponding >B of each second network side device is the same in this manner.
  • the interference formed by the second network side device is outside the receiving bandwidth of the first network side device
  • the ACLR and the CS are determined according to at least one of the following manners, and the ACIRb " s is determined according to the ACLR and the CS;
  • the way to determine ACLR and CS includes:
  • this value may be measured, or signaled, or a combination of the two.
  • This value includes factors such as penetration loss, antenna gain, and so on.
  • the MCL can use the empirical value (obtained by simulation), or the factory configuration of the device, or the protocol.
  • Method 2 The interference coordination information is the threshold of the interference tolerance.
  • the first network side device determines ⁇ , and uses Ia ⁇ b as the interference coordination information; where, Ia ⁇ b is the second network side device that the first network side device can bear. Threshold.
  • the value may be a protocol agreement, or a device factory setting, or calculated according to actual conditions (such as useful The received power value of the signal and the demodulation threshold are calculated to calculate the acceptable interference threshold).
  • the first network side device determines ⁇ 4 ⁇ i? according to the total interference threshold that the first network side device can bear; wherein, Ia ⁇ B is not greater than the total interference power value that the first network side device can bear. .
  • the first network side device has a plurality of ways to determine the value of the Ja ⁇ B according to the total interference threshold that the first network side device can bear. For details, refer to the method 1 and no further details are provided herein.
  • the A CIR bs is
  • the ACLR and the CS are determined according to at least one of the following manners, and the ACIRb " s is determined according to the ACLR and the CS;
  • the way to determine ACLR and CS includes:
  • selecting a ⁇ CJR from the plurality of ⁇ CJRs according to the frequency band allocation situation or the resource scheduling situation;
  • one of the plurality of ⁇ CSs is selected according to the frequency band allocation condition or the resource scheduling situation, and may be obtained by measurement, or signaling interaction, or a combination of the two. This value includes factors such as penetration loss, antenna gain, and so on.
  • the MCL can use the empirical value (obtained by simulation), or the factory configuration of the device, or the protocol.
  • the interference coordination information is a power reference value.
  • the second network side device that is in the vicinity of the first network side device is a network side device that generates interference to the first network side device.
  • the power adjustment value is greater than 0, it indicates that the power is adjusted upwards; if the power adjustment value is less than 0, it indicates that the power is adjusted downward; if the power adjustment value is equal to 0, it indicates that the power does not need to be adjusted.
  • the second network side device is a network side device that generates interference on the first network side device.
  • the first network side device determines a power adjustment value, and uses the power adjustment value as the interference coordination information.
  • the first network side device determines the power adjustment value, and several are listed below.
  • the first network side device determines the power reference value according to Equation 5 or Equation 6, and determines the power adjustment value according to the power reference value.
  • the first network side device is preferred, and the first network side device corresponds to each determined second network side device. Selecting a minimum value among the power reference values as a power reference value for determining the power adjustment value, and determining a power adjustment value corresponding to each second network side device according to the power reference value; or
  • the first network side device averages the power reference value corresponding to each determined second network side device as a power reference value for determining the power adjustment value, and determines, corresponding to each second network side device 20, according to the power reference value. Power adjustment value.
  • the first network side device can determine the power adjustment value in one of the following manners.
  • the first network side device may use the power reference value as a power adjustment value corresponding to each of the second network side devices that generate the interference.
  • the first network side device selects a power adjustment value from the power adjustment value set according to the power reference value.
  • the first network side device can withstand the interference value greater than the measured interference value, select a value from the power adjustment set that is closest to the power reference value and not greater than 0 as the power adjustment value, if If the interference value that the network side device can bear is not greater than the measured interference value, a value closest to the power reference value and greater than 0 is selected from the power adjustment set as the power adjustment value.
  • the values in the power adjustment set can be determined as needed.
  • Mode A3 The first network side device selects a power adjustment step value from the power adjustment step value set according to the power reference value, and uses the selected power adjustment step value as the power adjustment value.
  • the first network side device determines the step value corresponding to the range to which the power reference value belongs according to the corresponding relationship between the preset range value and the step value in the power adjustment step value set.
  • the second network side device adjusts only one step size at a time.
  • the value in the power adjustment step set can be determined as needed.
  • the first network side device determines the power reference value according to Equation 7 or Equation 8, and determines the power adjustment value according to the power reference value.
  • the first network side device can determine the power adjustment value in one of the following manners.
  • the first network side device may use the power reference value as a power adjustment value corresponding to each of the second network side devices that generate the interference.
  • Mode B2 The first network side device selects a power adjustment value from the power adjustment value set according to the power reference value. Preferably, if the first network side device can withstand the interference value greater than the measured interference value, select a value from the power adjustment set that is closest to the power reference value and not greater than 0 as the power adjustment value, if If the interference value that the network side device can bear is not greater than the measured interference value, a value closest to the power reference value and greater than 0 is selected from the power adjustment set as the power adjustment value.
  • the values in the power adjustment set can be determined as needed.
  • the first network side device selects a power adjustment step value from the power adjustment step value set according to the power reference value, and uses the selected power adjustment step value as the power adjustment value.
  • the first network side device determines the step value corresponding to the range to which the power reference value belongs according to the correspondence between the preset range value and the step value in the power adjustment step value set.
  • the value in the power adjustment step set can be determined as needed.
  • the first network side device compares the measured total interference value with the total interference power value that the first network side device can bear, and determines the power adjustment sum value according to the difference; according to the power adjustment total value, A power adjustment value of each of the second network side devices that generate the interference is determined.
  • the first network side device may divide the difference value by the number of the second network side devices that generate the interference to obtain a power reference value, and determine, according to the power reference value, the power adjustment value of each second network side device that generates the interference. ; or
  • the first network side device determines the weight of each second network side device, and multiplies the difference by the weight of each second network side device to obtain a power reference value, and determines each of the generated interference according to the power reference value.
  • the power adjustment value of the second network side device is the power adjustment value of the second network side device.
  • the first network side device can determine the power adjustment value in one of the following manners.
  • the first network side device uses the power adjustment value as a power adjustment value corresponding to each of the second network side devices that generate the interference.
  • the first network side device 10 selects a power adjustment value from the power adjustment value set according to the power adjustment value.
  • the first network side device can withstand the interference value greater than the measured interference value, select a value from the power adjustment set that is closest to the power reference value and not greater than 0 as the power adjustment value, if If the interference value that the network side device can bear is not greater than the measured interference value, a value closest to the power reference value and greater than 0 is selected from the power adjustment set as the power adjustment value.
  • the first network side device selects a power adjustment step value from the power adjustment step value set according to the power adjustment value, and uses the selected power adjustment step value as the power adjustment value.
  • the first network side device when the first network side device can withstand the interference value that is greater than the measured interference value, the first network side device selects a value that is not greater than 0 as the power adjustment value from the power adjustment step set.
  • a value greater than 0 is selected from the power adjustment step set as the power adjustment value.
  • the first network side device may send the interference coordination information according to the set time.
  • the specific time can be set as needed.
  • the second method for performing interference coordination in the embodiment of the present invention includes the following steps:
  • Step 601 The second network side device receives the interference coordination information determined by the first network side device, where the second network side device is a network side device that is located around the first network side device.
  • Step 602 The second network side device adjusts the downlink sending power value according to the received interference coordination information.
  • the second network side device may adjust the downlink transmission power value of the downlink subframe that generates the interference to the first network side device. Or adjust the downlink transmit power value of all downlink subframes.
  • the interference coordination information is a interference threshold
  • the second network side device adjusts the downlink transmission power value according to the received interference coordination information, the second network side device according to the received interference coordination information. , determine the maximum transmit power threshold, based on the maximum transmit power threshold. Adjust the downlink transmit power value.
  • the second network side device can determine the downlink transmit power value to be adjusted according to Equation 3 or Equation 4.
  • the interference formed by the second network side device is outside the receiving bandwidth of the first network side device, it is 0;
  • the ACLR and the CS are determined according to at least one of the following manners, and the ACIRb " s is determined according to the ACLR and the CS;
  • the way to determine ACLR and CS includes:
  • the higher level is signaled to ⁇ CS by the higher level
  • step 501 and step 502 are performed first, then step 601 and step 602 are performed; step 503 and step 601 and step 602 are not necessary.
  • the timing relationship only needs to be guaranteed after step 502.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory include instructions.
  • the manufacturing device, the instruction device implements the functions specified in one or more blocks of a flow or a flow and/or a block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the device can notify the second network side device of the interference coordination information for performing the interference coordination, so as to reduce the time slot interference caused by the difference between the uplink and downlink configurations in the scenario that the uplink and downlink service ratios are dynamically changed; System stability and performance.

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Description

一种进行千扰协调的方法、 系统和设备 本申请要求在 2011年 4月 14日提交中国专利局、 申请号为 201110093696.3、 发明名称 为"一种进行千扰协调的方法、 系统和设备"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技术领域, 特别涉及一种进行千扰协调的方法、 系统和设备。 背景技术
对于蜂窝系统釆用的基本的双工方式, 时分双工 (Time division duplex, TDD )模式 是指上下行链路使用同一个工作频带, 在不同的时间间隔上进行上下行信号的传输, 上下 行之间有保护间隔 ( Guard Period, GP ); 频分双工 ( Frequency division duplex, FDD )模 式则指上下行链路使用不同的工作频带, 可以在同一个时刻在不同的频率载波上进行上下 行信号的传输, 上下行之间有保护带宽 (Guard Band, GB )。
长期演进(Long Term Evolution, LTE ) TDD系统的帧结构稍复杂一些,如图 1A所示, 一个无线帧长度为 10ms, 包含特殊子帧和常规子帧两类共 10个子帧, 每个子帧为 lms。 特殊子帧分为 3个子帧: 下行导频子帧 (Downlink Pilot Time Slot, DwPTS )用于传输主 同步信号 (Primary Synchronization Signal, PSS )、 物理下行控制信道( Physical Downlink Control Channel, PDCCH )、 物理混合自动请求重传指示信道(Physical HARQ Indication Channel, PHICH )、 物理控制格式指示信道(Physical Control Format Indication Channel, PCFICH )、 物理下行链路共享信道(Physical Downlink Shared Channel, PDSCH )等; GP 用于下行和上行之间的保护间隔); 上行导频子帧( Uplink Pilot Time Slot, UpPTS )用于传 输探测用参考信号( Sounding Reference Signal, SRS )、物理随机接入信道( Physical Random Access Channel, PRACH )等。 常规子帧包括上行子帧和下行子帧, 用于传输上行 /下行控 制信道和业务数据等。 其中在一个无线帧中, 可以配置两个特殊子帧 (位于子帧 1和 6), 也 可以配置一个特殊子帧 (位于子帧 1)。 子帧 0和子帧 5以及特殊子帧中的 DwPTS子帧总是 用作下行传输,子帧 2以及特殊子帧中的 UpPTS子帧总是用于上行传输,其他子帧可以依 据需要配置为用作上行传输或者下行传输。
TDD 系统中上行和下行传输使用相同的频率资源, 在不同的子帧上传输上行 /下行信 号。 在常见的 TDD系统中, 包括 3G的 TD-SCDMA (时分同步码分多址) 系统和 4G的 TD-LTE 系统, 上行和下行子帧的划分是静态或半静态的, 通常的做法是在网络规划过程 中根据小区类型和大致的业务比例确定上下行子帧比例划分并保持不变。 这在宏小区大覆 盖的背景下是较为筒单的做法,并且也较为有效。而随着技术发展,越来越多的微小区( Pico cell ), 家庭基站( Home NodeB )等低功率基站被部署用于提供局部的小覆盖, 在这类小区 中, 用户数量较少, 且用户业务需求变化较大, 因此小区的上下行业务比例需求存在动态 改变的情况。
在实际系统中, 不同的小区如果设置了不同的上下行子帧配置, 则会造成相邻小区的 交叉时隙千扰。 宏小区在发送下行信号的时隙上, 毫微微小区 ( femto cell )用于上行信号 接收, 则两小区之间出现: 基站 -基站千扰, femto基站直接接收到 Macro基站的下行信号, 将严重影响 femto基站接收本地 UE ( Local UE, L-UE )上行信号的盾量。 这里的相邻小 区可以是地理上相邻的使用同样 TDD载波的小区(图 1B所示), 或者是地理上重叠或使用 相邻 TDD载波的小区 (图 1C所示)。 但是目前对于上下行业务比例需求进行动态改变的 场景下, 还没有解决交叉时隙千扰的方案。
综上所述, 目前对于上下行业务比例需求进行动态改变的场景下, 还没有解决时隙千 扰的方案。 发明内容
本发明实施例提供一种进行千扰协调的方法、 系统和设备, 用以对于上下行业务比例 需求进行动态改变的场景下, 降低时隙千扰。
本发明实施例提供的一种进行千扰协调的方法, 包括:
第一网络侧设备确定千扰协调信息, 所述千扰协调信息用于通知处于第一网络侧设备 周围的第二网络侧设备根据所述千扰协调信息进行千扰协调;
所述第一网络侧设备向所述第二网络侧设备发送所述千扰协调信息。
本发明实施例提供的另一种进行千扰协调的方法, 包括:
第二网络侧设备接收第一网络侧设备确定的千扰协调信息, 其中第二网络侧设备是处 于第一网络侧设备周围的网络侧设备;
所述第二网络侧设备根据收到的千扰协调信息调整下行发送功率值。
本发明实施例提供的一种进行千扰协调的第一网络侧设备, 包括:
信息确定模块, 用于确定千扰协调信息, 所述千扰协调信息用于通知处于第一网络侧 设备周围的第二网络侧设备根据所述千扰协调信息进行千扰协调;
发送模块, 用于向所述第二网络侧设备发送所述千扰协调信息。
本发明实施例提供的一种进行千扰协调的第二网络侧设备, 包括:
接收模块, 用于接收第一网络侧设备确定的千扰协调信息, 其中第二网络侧设备是处 于第一网络侧设备周围的网络侧设备;
处理模块, 用于根据收到的千扰协调信息调整下行发送功率值。
本发明实施例提供的一种进行千扰协调的系统, 包括: 第一网络侧设备, 用于确定千扰协调信息, 向处于第一网络侧周围的第二网络侧设备 发送千扰协调信息;
第二网络侧设备, 用于根据收到的千扰协调信息调整下行发送功率值。
由于能够向第二网络侧设备通知用于进行千扰协调的千扰协调信息, 从而在上下行业 务比例需求进行动态改变的场景下, 降低上下行配置不同导致的时隙千扰; 进一步提高了 系统稳定性和性能。 附图说明
图 1A为 TD-LTE系统帧结构示意图;
图 1B为使用相同 TDD载波时交叉时隙千扰示意图;
图 1C为使用相邻 TDD载波时交叉时隙千扰示意图;
图 2为本发明实施例进行千扰协调的系统结构示意图;
图 3为本发明实施例第一网络侧设备结构示意图;
图 4为本发明实施例第二网络侧设备结构示意图;
图 5为本发明实施例第一种进行千扰协调的方法流程示意图;
图 6为本发明实施例第二种进行千扰协调的方法流程示意图。 具体实施方式
本发明实施例第一网络侧设备向处于第一网络侧设备周围的第二网络侧设备发送千 扰协调信息, 用于通知第二网络侧设备根据千扰协调信息进行千扰协调。 由于能够向第二 网络侧设备通知用于进行千扰协调的千扰协调信息, 从而在上下行业务比例需求进行动态 改变的场景下, 降低上下行配置不同导致的时隙千扰。
其中, 本发明实施例能够应用于 TDD系统中 (比如 TD-LTE系统), 也可以应用于其 他需要动态调整子帧上下行配置的系统中, 例如 TD-SCDMA系统及其后续演进系统, 微 波存取全球互通(Worldwide Interoperability for Microwave Access, WiMAX ) 系统及其后 续演进系统等。
下面结合附图对本发明的具体实施方式进行说明。
在下面的说明过程中, 先从两个网络侧设备的配合实施进行说明, 最后分别从两个网 络侧设备的实施进行说明, 但这并不意味着二者必须配合实施, 实际上, 当两个网络侧设 备分开实施时, 也解决了分别在两个网络侧设备所存在的问题, 只是二者结合使用时, 会 获得更好的技术效果。
如图 2所示, 本发明实施例进行千扰协调的系统包括: 第一网络侧设备 10和第二网 络侧设备 20。 第一网络侧设备 10, 用于确定千扰协调信息, 向处于第一网络侧 10周围的第二网络 侧设备 20 (即第一网络侧设备 10受到第二网络侧设备 20的千扰)发送千扰协调信息。
比如第一网络侧设备 10可以在进行小区上下行配置中确定扰协调信息; 还可以在收 到高层的通知后确定扰协调信息。
第二网络侧设备 20, 用于接收千扰协调信息, 根据收到的千扰协调信息调整下行发送 功率值。
其中, 处于第一网络侧设备 10周围的第二网络侧设备 20可以是处于第一网络侧设备 周围的所有网络侧设备; 也可以是处于第一网络侧设备周围且对第一网络侧设备 10产生 千扰的网络侧设备。
第一网络侧设备 10可以釆用下列方式确定被第一网络侧设备千扰的网络侧设备: 第一网络侧设备 10 测量获得周围网络侧设备的上下行配置信息, 进而判定会造成交 叉时隙千扰的网络侧设备; 或
周围网络设备信令通知第一网络侧设备 10 周围网络设备的上下行配置信息, 进而判 定会造成交叉时隙千扰的网络侧设备; 或
第一网络侧设备 10将自己的上下行配置或预配置信令通知周围网络侧设备, 周围网 络侧设备根据这个信息判定是否会形成交叉时隙千扰, 并反馈是否受嘎千扰的信息。
需要说明的是, 本发明实施例并不局限于上述方式, 其他能够确定被第一网络侧设备 千扰的网络侧设备的方式都适用本发明实施例。
较佳的, 第一网络侧设备 10向第二网络侧设备 20发送千扰协调信息之前, 可以先测 量周边基站部署情况, 比如确定有效千扰基站数目及各自的参考信号接收功率( Reference Signal Receiving Power, RSRP )值, 和 /或与周边基站交互基站配置信息, 其中配置信息 包括但不限于下列信息中的至少一种: 发射功率、 资源配置信息。
其中, 第一网络侧设备 10根据业务需求或其它小区的千扰影响或其它原因需要重新 进行本区的上下行配置时,这个配置可能带来基站间千扰问题,如邻区子帧 n为下行子帧, 第一网络侧设备 10配置子帧 n为上行子帧时, 邻区会千扰本区接收数据。 第一网络侧设 备 10需要考虑千扰影响限制这个子帧的配置或者协调千扰邻区的下行功率配置。
较佳的, 第一网络侧设备 10可以通过空中接口、 X2接口、 S1接口和终端转发中的一 种方式向第二网络侧设备 20发送千扰协调信息。
终端转发方式可以是第一网络侧设备 10将千扰协调信息发送给终端, 由终端转发给 第二网络侧设备 20。
需要说明的是, 本发明实施例并不局限于上述发送千扰协调信息的方式, 其他能够发 送千扰协调信息的方式都适用本发明实施例。
较佳的, 第一网络侧设备 10对小区上下行子帧进行配置时, 如果检测的子帧受到的 千扰值高于第一网络侧设备 10 能够承受的千扰值, 将该子帧配置为下行子帧或不在该子 帧上进行调度或提高调度用户的发送功率; 如果检测的子帧受到的千扰值不高于第一网络 侧设备 10能够承受的千扰值, 将该子帧配置为上行子帧。
在实施中, 第一网络侧设备 10可以监测部分或全部需要配置为上行的子帧。
较佳的, 如果第二网络侧设备 20根据收到的千扰协调信息调整下行发送功率值, 则 第二网络侧设备 20可以调整对第一网络侧设备 10产生千扰的下行子帧的下行发送功率值 或调整全部下行子帧的下行发送功率值
千扰协调信息可以是要求第二网络侧设备如何进行调整的信息。 较佳的, 千扰协调信 息可以是下列信息中的一种: 最大发射功率门限值、 千扰承受能力门限值和功率调整值。 下面分别进行介绍。
方式一、 千扰协调信息是最大发射功率门限值。 最大发射功率门限值使千扰水平在第 一网络侧设备 10承受能力范围内。 最大发射功率门限值可以用于限制第二网络侧设备 20 所有下行子帧的发射功率, 也可以仅用于限制第二网络侧设备 20对其它小区有影响的下 行子帧。
第一网络侧设备 10 的承受能力可以是网络侧设备根据实际情况确定的, 或设备出厂 配置, 或标准约定等。
具体的, 第一网络侧设备 10根据第一网络侧设备 10的设备信息和 /或第二网络侧设 备 20的设备信息, 确定允许第二网络侧设备 20的最大发射功率门限值 , 并将最大发射功 率门限值作为千扰协调信息;
其中, 最大发射功率门限值用于限制第二网络侧设备 20 的所有下行子帧的发射功率 或第二网络侧设备中对邻小区有千扰的下行子帧。
实施中, 第一网络侧设备 10的设备信息包括但不限于下列信息中的至少一种: 频谱分配信息、 资源调度信息和千扰承受能力值。
第二网络侧设备 20的设备信息包括但不限于下列信息中的至少一种:
第二网络侧设备 20和第一网络侧设备 10之间的路径损耗值、 参考信号接收功率值、 频谱分配信息和资源调度信息。
其中, 第一网络侧设备 10确定第二网络侧设备 20的设备信息的方式有很多, 比如测 量; 信令通知。
第一网络侧设备 10的设备信息和第二网络侧设备 20的设备信息可以是测量获得, 或 信令通知, 或标准约定。
较佳的, 第一网络侧设备 10可以根据公式一或公式二确定最大发射功率门限值: 尸丽 tx = →B + ACIRbsbs + max(pathloss, MCL) 八 Λ. . ?丽 = IA→B + max(pathloss, MCL) 公式二; 其中, maxte是最大发射功率门限值; 是第一网络侧设备可承受的第二网络侧
ACIRbs_bs = ~~― 设备的千扰门限值; ACLRA ACSB , 其中 A LRA是第二网络侧设 备 20的邻道泄漏功率比值( adjacent channel leakage power radio ), B是第一网络侧 设备 10的邻道选择性值( adjacent channel selectivity ); Pat^oss是路径损耗值; MCL 是最小耦合损耗值。 较佳的, 如果 Ia→b是第一网络侧设备 10可承受的第二网络侧设备 20千扰的千扰门 限值, 这个值可以是协议约定, 或设备出厂设置, 或根据实际情况计算获得(比如有用信 号的接收功率值和解调门限值, 计算出可承受的千扰门限值)。
较佳的, 第一网络侧设备 10根据第一网络侧设备可承受的总千扰门限, 确定 Jab; 其中, Λ→Β不大于第一网络侧设备可承受的总千扰功率值。
其中, 第一网络侧设备 10根据第一网络侧设备可承受的总千扰门限, 确定 Ja→b的方 式有很多种, 下面列举几种。
( 1 )、 第一网络侧设备 10将第一网络侧设备 10可承受的总千扰功率值分别乘以每个 第二网络侧设备 20对应的加权参数 , 得到第二网络侧设备 20对应的 - >B
比如可以根据第二网络侧设备 20对第一网络侧设备 10的千扰状况, 确定每个第二网 络侧设备 20对应的加权参数, 例如千扰越大加权参数越大;
然后将第一网络侧设备 10可承受的总千扰功率值分别乘以每个第二网络侧设备 20对 应的加权参数 , 分别得到每个第二网络侧设备 20对应的 。 即这种方式每个第二网络 侧设备 20对应的 - >B有可能相同也有可能不同。
( 2 )、 第一网络侧设备 10将第一网络侧设备 10可承受的总千扰功率值除以第二网络 侧设备的数量, 得到第二网络侧设备 20对应的 。 即这种方式每个第二网络侧设备 20 对应的 a->s都相同。
较佳的, 当第二网络侧设备 20 形成的千扰在第一网络侧设备 10 接收带宽外时, 为 0;
当第二网络侧设备 20形成的千扰在第一网络侧设备 10接收带宽外时, 根据下列方式 中的至少一种确定 ACLR和 CS , 并根据 ACLR和 CS确定 ACIRb"s
其中, 确定 ACLR和 CS的方式包括: 根据经验值确定 ACLR和 /或 CS;
根据参考值确定 ACLR和 /或 CS;
确定 ^CJR和 /或^: S ;
由高层通过信令的通知确定 CS;
根据自身配置确定 ACLR。
比如可以釆用其中一种方式确定 ^CS , 釆用另一种方式确定 ^CJR。
较佳的, 在确定多个 ^CJR时, 根据频段分配情况或资源调度情况, 从多个 ^CJR中 选择一个 ^CJR ;
在确定多个 ^CS时, 根据频段分配情况或资源调度情况, 从多个 ^CS中选择一个 ACS。
如果根据参考值确定 ^CJR和 /或 ^CS , 可以预先设定频段分配情况和参考值的对应 关系和 /或资源调度情况和参考值的对应关系, 然后根据对应关系就可以确定自身的频段 分配情况或资源调度情况对应的参考值。 其中, 频段分配情况和参考值的对应关系和 /或 资源调度情况和参考值的对应关系可以参见 3GPP TS 36.101或 3GPP TS 36.104协议。
如果根据经验值确定 ^CJR和 /或 ^CS , 还可以预先设定频段分配情况和经验值的对 应关系和 /或资源调度情况和经验值的对应关系, 然后根据对应关系就可以确定自身的频 段分配情况或资源调度情况对应的参考值。
较佳的, 可以是测量得到, 或信令交互, 或两者结合获得。 这个值包括了 穿透损耗, 天线增益等因素。 可以釆用经验值(仿真获得), 或设备出厂配置, 或协议约定的。 方式二、 千扰协调信息是千扰承受能力门限值。 具体的, 第一网络侧设备 10确定 Iab , 并将 Iab作为千扰协调信息; 其中, Ia→b是第一网络侧设备可承受的第二网络侧设备千扰的门限值。
如果第二网络侧设备 20根据收到的千扰协调信息调整下行发送功率值, 则第二网络 侧设备可以根据公式三或公式四确定需要调整的下行发送功率值:
P 二 IDL→UL +max(pathloss,MCL) 公式三;
P,x = ^DL→UL + ACIRbs.bs + ax(pathlossMCL) 公式四; 其中, Ptx是需要调整的下行发送功率值; I DL→UL是收到的第一网络侧设备 10的千 扰门限值或收到的多个被千扰的网络侧设备通知的千扰门限值中最小的千扰门限值; 1
ACIRbs_bs =― χ
A CLRA A CSB , 其中 A CLRA是第二网络侧设备 20的邻道泄漏功率比值, C¾是第一网络侧设备 10的邻道选择性值; ^ 7/0SS是路径损耗值; 是最小 耦合损耗值。 较佳的, 如果 Ia→b是第一网络侧设备 10可承受的第二网络侧设备 20千扰的千扰门 限值, 这个值可以是协议约定, 或设备出厂设置, 或根据实际情况计算获得(比如有用信 号的接收功率值和解调门限值, 计算出可承受的千扰门限值)。
较佳的, 第一网络侧设备 10根据第一网络侧设备可承受的总千扰门限, 确定 Ja→b; 其中, Λ→Β不大于第一网络侧设备可承受的总千扰功率值。
其中, 第一网络侧设备 10根据第一网络侧设备可承受的总千扰门限, 确定 Ja→b的方 式有很多种, 具体可以参见方式一, 在此不再赘述。
较佳的, 当第二网络侧设备 20 形成的千扰在第一网络侧设备 10 接收带宽外时,
A CIRbs-bs为 0;
当第二网络侧设备 20形成的千扰在第一网络侧设备 10接收带宽外时, 根据下列方式 中的至少一种确定 ACLR和 CS , 并根据 ACLR和 CS确定 ACIRb"s
其中, 确定 ACLR和 CS的方式包括:
根据频段分配情况或资源调度情况确定 ^CJR和 /或 ACS ;
由高层通过信令通知 ^CS;
根据自身配置获得 CJR。
较佳的, 可以是测量得到, 或信令交互, 或两者结合获得。 这个值包括了 穿透损耗, 天线增益等因素。
MCL可以釆用经验值(仿真获得), 或设备出厂配置, 或协议约定的。
方式三、 千扰协调信息是功率调整值。 对于方式三, 较佳的, 处于第一网络侧设备 10 周围的第二网络侧设备 20是对第一网络侧设备 10产生千扰的网络侧设备。
如果功率调整值大于 0, 则表示功率向上调整; 如果功率调整值小于 0, 则表示功率 向下调整; 如果功率调整值等于 0, 则表示功率无需调整。
下面以第二网络侧设备 20是对第一网络侧设备 10产生千扰的网络侧设备为例进行说 明
具体的, 第一网络侧设备 10确定功率调整值 , 并将功率调整值作为千扰协调信息 c 其中, 第一网络侧设备 10确定功率调整值的方式有很多, 下面列举几种。
( 1 )、 第一网络侧设备 10根据公式五或公式六确定功率调整值: PA = →B - RSRPA 公式五;
PA = {lA→B - RSRPA,0) 公式六; 其中, PA是功率参考值; JA→B是第一网络侧设备可承受的第二网络侧设备千扰的 门限值; RSRPA是第一网络侧设备测量得到的第二网络测设备的参考信号接收功率值; 第一网络侧设备 10根据功率参考值确定功率调整值。
较佳的, 如果 Ia→b是第一网络侧设备 10可承受的第二网络侧设备 20千扰的千扰门 限值, 这个值可以是协议约定, 或设备出厂设置, 或根据实际情况计算获得(比如有用信 号的接收功率值和解调门限值, 计算出可承受的千扰门限值)。
较佳的, 第一网络侧设备 10根据第一网络侧设备可承受的总千扰门限, 确定 Ja→b; 其中, ^4— 不大于第一网络侧设备可承受的总千扰功率值。
其中, 第一网络侧设备 10根据第一网络侧设备可承受的总千扰门限, 确定 Ja→b的方 式有很多种, 具体可以参见方式一, 在此不再赘述。
较佳的, 第一网络侧设备 10从确定的每个第二网络侧设备 20对应的功率参考值中选 择最小的值作为用于确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络 侧设备 20对应的功率调整值; 或
第一网络侧设备 10从确定的每个第二网络侧设备 20对应的功率参考值取平均作为用 于确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络侧设备 20对应的 功率调整值。
较佳的, 第一网络侧设备 10还可以通过下列方式中的一种确定功率调整值。
方式 Al、 第一网络侧设备 10可以将功率参考值作为对应每个产生千扰的第二网络侧 设备 20的功率调整值。
方式 A2、 第一网络侧设备 10根据功率参考值从功率调整值集合中选择功率调整值。 较佳的, 如果第一网络侧设备 10可承受的千扰值大于测量得到的千扰值, 则从功率 调整集合中选择一个最接近功率参考值且不大于 0的数值作为功率调整值, 如果第一网络 侧设备 10可承受的千扰值不大于测量得到的千扰值, 则从功率调整集合中选择一个最接 近功率参考值且大于 0的数值作为功率调整值。
假设功率调整集合是 p 二 {l0dBm,5dBm,ldBm -ldBm} , 假设功率参考值是 8 , 则可以选择 1 OdBm作为功率调整值。
具体可以根据需要确定功率调整集合中的值。
方式 A3、 第一网络侧设备 10根据功率参考值从功率调整步长值集合中选择功率调整 步长值 , 并将选择的功率调整步长值作为功率调整值。
较佳的, 第一网络侧设备 10根据预先设定的范围值和功率调整步长值集合中步长值 的对应关系, 确定功率参考值所属的范围对应的步长值。 相应的, 第二网络侧设备 20每 次只调整一个步长大小。
具体可以根据需要确定功率调整步长集合中的值和对应关系。
( 2 )、 第一网络侧设备 10根据公式七或公式八确定功率参考值, 并根据功率参考值 确定功率调整值;
PA ^A→B ^ A measurement 公式七;
PA = rnin ^/^→5 - 0) 公式八; 其中, 是第一网络侧设备测量得到的第二网络侧设备千扰值; JA→B是 第一网络侧设备可承受的第二网络侧设备千扰的门限值。
较佳的, 第一网络侧设备 10从确定的每个第二网络侧设备 20对应的功率参考值中选 择最小的值作为用于确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络 侧设备 20对应的功率调整值; 或
第一网络侧设备 10从确定的每个第二网络侧设备 20对应的功率参考值取平均作为用 于确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络侧设备 20对应的 功率调整值。
较佳的, 第一网络侧设备 10可以通过下列方式中的一种确定功率调整值。
方式 Bl、 第一网络侧设备 10可以将功率参考值作为对应每个产生千扰的第二网络侧 设备 20的功率调整值。
方式 B2、 第一网络侧设备 10根据功率参考值从功率调整值集合中选择功率调整值。 较佳的, 如果第一网络侧设备 10可承受的千扰值大于测量得到的千扰值, 则从功率 调整集合中选择一个最接近功率参考值且不大于 0的数值作为功率调整值, 如果第一网络 侧设备 10可承受的千扰值不大于测量得到的千扰值, 则从功率调整集合中选择一个最接 近功率参考值且大于 0的数值作为功率调整值。
假设功率调整集合是 p 二 {l0dBm,5dBm,ldBm -ldBm} , 假设功率参考值是 8 , 则可以选择 1 OdBm作为功率调整值。
具体可以根据需要确定功率调整集合中的值。
方式 B3、 第一网络侧设备 10根据功率参考值从功率调整步长值集合中选择功率调整 步长值 , 并将选择的功率调整步长值作为功率调整值。
较佳的, 第一网络侧设备 10根据预先设定的范围值和功率调整步长值集合中步长值 的对应关系, 确定功率参考值所属的范围对应的步长值。
具体可以根据需要确定功率调整步长集合中的值和对应关系。
( 3 )、 第一网络侧设备 10将测量得到的总千扰值 与第一网络侧设备可承受的总千 扰功率值 ^ 做差, 根据差值确定功率调整总和值; 根据功率调整总和值, 确定每个产 生千扰的第二网络侧设备 20的功率调整值。
较佳的, 第一网络侧设备 10可以将差值除以产生千扰的第二网络侧设备 20数量得到 功率参考值, 根据功率参考值确定每个产生千扰的第二网络侧设备 20的功率调整值; 或 第一网络侧设备 10确定每个第二网络侧设备 20的权值 , 并将差值分别乘以每个第二 网络侧设备 20 的权值得到功率参考值, 根据功率参考值确定每个产生千扰的第二网络侧 设备 20的功率调整值。
较佳的, 第一网络侧设备 10可以通过下列方式中的一种确定功率调整值。
方式 Cl、 第一网络侧设备 10将功率调整值作为对应每个产生千扰的第二网络侧设备 的功率调整值。
比如釆用将差值除以产生千扰的第二网络侧设备 20数量, 得到功率参考值, 根据功 率参考值确定每个产生千扰的第二网络侧设备 20 的功率调整值的方式, 则第一网络侧设 备 i 0将功率调整值作为每个产生千扰的第二网络侧设备 20的功率调整值。 即每个产生千 扰的第二网络侧设备的功率调整值都是同一个。
比如釆用将差值分别乘以每个第二网络侧设备的权值得到功率参考值, 根据功率参考 值确定每个产生千扰的第二网络侧设备 20的功率调整值的方式, 则第一网络侧设备 10将 功率调整值作为对应产生千扰的第二网络侧设备 20 的功率调整值。 即每个产生千扰的第 二网络侧设备的功率调整值是独立的。
方式 C2、 第一网络侧设备 10根据功率调整值从功率调整值集合中选择功率调整值。 较佳的, 如果第一网络侧设备 10可承受的千扰值大于测量得到的千扰值, 则从功率 调整集合中选择一个最接近功率参考值且不大于 0的数值作为功率调整值, 如果第一网络 侧设备 10可承受的千扰值不大于测量得到的千扰值, 则从功率调整集合中选择一个最接 近功率参考值且大于 0的数值作为功率调整值。
假设功率调整集合是 p 二 {l0dBm,5dBm,ldBm -ldBm} , 假设功率参考值是 8 , 则可以选择 1 OdBm作为功率调整值。
如果釆用将差值除以产生千扰的第二网络侧设备 20数量, 得到功率参考值, 根据功 率参考值确定每个产生千扰的第二网络侧设备 20 的功率调整值的方式, 则第一网络侧设 备 10只需要选择一个;
如果釆用将差值分别乘以每个第二网络侧设备的权值, 得到功率参考值, 根据功率参 考值确定每个产生千扰的第二网络侧设备的功率调整值的方式, 则第一网络侧设备 10 需 要根据每一个第二网络侧设备 20对应的值选择一次。
方式 C3、 第一网络侧设备 10根据功率调整值从功率调整步长值集合中选择功率调整 步长值 , 并将选择的功率调整步长值作为功率调整值。 较佳的, 第一网络侧设备 10根据预先设定的范围值和功率调整步长值集合中步长值 的对应关系, 确定功率参考值所属的范围对应的步长值。 相应的, 第二网络侧设备 20每 次只调整一个步长大小。
具体可以根据需要确定功率调整步长集合中的值和对应关系。
如果釆用将差值除以产生千扰的第二网络侧设备 20数量得到功率参考值, 根据功率 参考值确定每个产生千扰的第二网络侧设备 20 的功率调整值的方式, 则第一网络侧设备 10只需要选择一个;
如果釆用将差值分别乘以每个第二网络侧设备的权值得到功率参考值, 根据功率参考 值确定每个产生千扰的第二网络侧设备的功率调整值的方式, 则第一网络侧设备 10 需要 根据每一个第二网络侧设备 20对应的值选择一次。
较佳的, 对于方式三, 第一网络侧设备 10可以根据设定的时间, 周期发送千扰协调 信息。 具体时间可以根据需要进行设定。
在实施中, 第二网络侧设备 20可以有多个, 如果有多个第二网络侧设备 20, 第一网 络侧设备 10按照上述方式中的一种分别确定每个第二网络侧设备 20的千扰协调信息, 并 发送给对应的第二网络侧设备 20。
其中, 本发明实施例的网络侧设备可以^ &站(比如宏基站、 家庭基站等), 也可以 是 RN (中继)设备, 还可以是其它网络侧设备。
基于同一发明构思, 本发明实施例中还提供了两种网络侧设备、 以及进行千扰协调的 方法, 由于这些设备和方法解决问题的原理与进行千扰协调的系统相似, 因此这些设备和 方法的实施可以参见系统的实施, 重复之处不再赘述。
如图 3所示, 本发明实施例第一网络侧设备包括: 信息确定模块 100和发送模块 110。 信息确定模块 100 , 用于确定千扰协调信息。
发送模块 110, 用于向处于第一网络侧周围的第二网络侧设备发送信息确定模块 100 确定的千扰协调信息, 用于通知第二网络侧设备根据千扰协调信息进行千扰协调。
较佳的, 信息确定模块 100根据第一网络侧设备的设备信息和 /或第二网络侧设备的 设备信息, 确定允许第二网络侧设备的最大发射功率门限值 , 并将最大发射功率门限值作 为千扰协调信息;
其中, 最大发射功率门限值用于限制第二网络侧设备的所有下行子帧的发射功率或第 二网络侧设备中对邻小区有千扰的下行子帧。
较佳的, 信息确定模块 100根据下列公式确定最大发射功率门限值:
尸丽— fx = →B + ACIRbs_bs + max(pathloss, MCL) 或
^nax_/x = 1A→B +纖 X hloSS, MCL) 其中, maxte是最大发射功率门限值; 是第一网络侧设备可承受的第二网络侧
AC1R =■ 1
- + - 设备的千扰门限值; ACLRA ACSB , 其中 A LRA是第二网络侧设备的邻 道泄漏功率比值, ^是第一网络侧设备的邻道选择性值; PATHLOSS是路径损耗值;
MC 是最小耦合损耗值。 较佳的, 信息确定模块 100确定 ^4— , 并将^ 作为千扰协调信息;
其中, Ia→b是第一网络侧设备可承受的第二网络侧设备千扰的门限值。
较佳的, 信息确定模块具体用于:
确定功率调整值, 并将功率调整值作为千扰协调信息。
较佳的, 信息确定模块 100根据下列公式确定差值, 并根据功率参考值确定功率调整 值;
PA = →B - RSRPA; 或^ = m {lA→B― RSRPA,Q、■ 其中, PA是功率参考值; JA→B是第一网络侧设备可承受的第二网络侧设备千扰的 门限值; RSRPA是第一网络侧设备测量得到的第二网络测设备的参考信号接收功率值。
较佳的, 信息确定模块 100功率参考值, 并根据功率参考值确定功率调整值; PA― A→B ^ A measurement; 或^ 4 — ^ A→B - I A measurement , ; 其中, — 是第一网络侧设备测量得到的第二网络侧设备千扰值; JA→B是 第一网络侧设备可承受的第二网络侧设备千扰的门限值。
较佳的, 信息确定模块 100从确定的每个第二网络侧设备对应的功率参考值中选择最 小的值作为用于确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络侧设 备对应的功率调整值; 或从确定的每个第二网络侧设备对应的功率参考值取平均作为用于 确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络侧设备对应的功率调 整值。
较佳的, 信息确定模块 100将测量得到的总千扰值 与第一网络侧设备可承受的总 千扰功率值 ^ 做差, 根据差值确定功率调整总和值; 根据功率调整总和值, 确定每个 产生千扰的第二网络侧设备的功率调整值。
较佳的, 信息确定模块 100将差值除以产生千扰的第二网络侧设备数量得到功率参考 值, 根据功率参考值确定每个产生千扰的第二网络侧设备的功率调整值; 或确定每个第二 网络侧设备的权值 , 并将差值分别乘以每个第二网络侧设备的权值得到功率参考值, 根据 功率参考值确定每个产生千扰的第二网络侧设备的功率调整值。
较佳的, 信息确定模块 100将功率参考值作为对应每个产生千扰的第二网络侧设备的 功率调整值; 或根据功率参考值从功率调整值集合中选择功率调整值; 或根据功率参考值 从功率调整步长值集合中选择功率调整步长值, 并将选择的功率调整步长值作为功率调整 值。
较佳的, 发送模块 110周期发送千扰协调信息。
较佳的, 信息确定模块 100根据第一网络侧设备可承受的总千扰门限, 确定 Ja→b; 其中, Λ→Β不大于第一网络侧设备可承受的总千扰功率值。
较佳的, 信息确定模块 100将第一网络侧设备可承受的总千扰功率值分别乘以每个第 二网络侧设备对应的加权参数,得到第二网络侧设备对应的 ->B; 或将第一网络侧设备可 承受的总千扰功率值除以第二网络侧设备的数量, 得到第二网络侧设备对应的 ->Β
较佳的, 发送模块 110通过空中接口、 X2接口、 S1接口和终端转发中的一种方式向 第二网络侧设备发送千扰协调信息。
较佳的, 本发明实施例的第一网络侧设备还可以进一步包括: 配置模块 120。
配置模块, 用于在发送千扰协调信息之后, 监测需要配置为上行的子帧受到的千扰, 根据监测结果对子帧进行配置 , 以减少配置后子帧受到的千扰。
较佳的, 如果监测的子帧受到的千扰值高于第一网络侧设备能够承受的千扰值 , 配置 模块 120将该子帧配置为下行子帧或不在该子帧上进行调度或提高调度用户的发送功率; 如果监测的子帧受到的千扰值不高于第一网络侧设备能够承受的千扰值, 配置模块
120将该子帧配置为上行子帧。
较佳的, 配置模块 120监测部分或全部需要配置为上行的子帧。
如图 4所示, 本发明实施例第二网络侧设备包括: 接收模块 200和处理模块 210。 接收模块 200 , 用于接收第一网络侧设备确定的千扰协调信息, 其中第二网络侧设备 是处于第一网络侧设备周围的网络侧设备;
处理模块 210 , 用于根据接收模块 200收到的千扰协调信息调整下行发送功率值或者 丢弃接收模块 200收到的千扰协调信息。
较佳的, 处理模块 210在调整下行发送功率值时, 调整对第一网络侧设备产生千扰的 下行子帧的下行发送功率值或调整全部下行子帧的下行发送功率值。
较佳的, 处理模块 210在整下行发送功率值, 且千扰协调信息是千扰门限值时, 根据 收到的千扰协调信息, 确定最大发射功率门限值, 根据最大发射功率门限值。 调整下行发 送功率值。
较佳的, 处理模块 210根据下列公式确定最大发射功率门限值: P = IDL→UL + max(pathloss, MCL) . 或 Ptx = I DL→UL + ACIRbs_bs + max(pathloss,MCL) . 其中, 是最大发射功率门限值; I DL→UL是收到的第一网络侧设备可承受的第二 网络侧设备千扰的门限值或收到的多个被千扰的网络侧设备通知的千扰门限值中最小的
1
ACIRbs_bs = -
- + - 千扰门限值; 1^ Α , 其中 是第二网络侧设备的邻道泄漏 功率比值, ^是第一网络侧设备的邻道选择性值; ^^^^^ ^是路径损耗值; MCL 是最小耦合损耗值。 在实施中, 第一种网络侧设备 (即图 3的网络侧设备)也可能产生千扰。 第二种网络 侧设备(即图 4的网络侧设备)也可能受到千扰, 所以第一种网络侧设备和第二种网络侧 设备的功能可以合在一个实体中 (即第一种网络侧设备和第二种网络侧设备的模块在一个 实体中) , 根据需要选择使用第一种网络侧设备的功能或第二种网络侧设备的功能。
如图 5所示, 本发明实施例第一种进行千扰协调的方法包括下列步骤:
步骤 501、 第一网络侧设备确定千扰协调信息。
步骤 502、 第一网络侧设备向处于第一网络侧周围的第二网络侧设备发送千扰协调信 息, 用于通知第二网络侧设备根据千扰协调信息进行千扰协调。
其中, 处于第一网络侧设备 10周围的第二网络侧设备 20可以是处于第一网络侧设备 周围的所有网络侧设备; 也可以是处于第一网络侧设备周围且对第一网络侧设备 10产生 千扰的网络侧设备。
较佳的, 步骤 502之前, 第一网络侧设备可以先测量周边基站部署情况, 比如确定有 效千扰基站数目及各自的 RSRP, 和 /或与周边基站交互基站配置信息, 其中配置信息包括 但不限于下列信息中的至少一种: 发射功率、 资源配置信息。
其中, 第一网络侧设备根据业务需求或其它小区的千扰影响或其它原因需要重新进行 本区的上下行配置时, 这个配置可能带来基站间千扰问题, 如邻区子帧 n为下行子帧, 第 一网络侧设备配置子帧 n为上行子帧时, 邻区会千扰本区接收数据。 第一网络侧设备需要 考虑千扰影响限制这个子帧的配置或者协调千扰邻区的下行功率配置。
较佳的, 步骤 502中, 第一网络侧设备可以通过空中接口、 X2接口、 S1接口和终端 转发中的一种方式向第二网络侧设备发送千扰协调信息。
终端转发方式可以是第一网络侧设备将千扰协调信息发送给终端, 由终端转发给第二 网络侧设备。
需要说明的是, 本发明实施例并不局限于上述发送千扰协调信息的方式, 其他能够发 送千扰协调信息的方式都适用本发明实施例。
较佳的, 步骤 502之后还可以进一步包括:
步骤 503、 第一网络侧设备监测需要配置为上行的子帧受到的千扰, 根据监测结果对 子帧进行配置, 以减少配置后子帧受到的千扰。
较佳的, 步骤 503中, 第一网络侧设备对小区上下行子帧进行配置时, 如果检测的子 帧受到的千扰值高于第一网络侧设备能够承受的千扰值 , 将该子帧配置为下行子帧或不在 该子帧上进行调度或提高调度用户的发送功率; 如果检测的子帧受到的千扰值不高于第一 网络侧设备能够承受的千扰值, 将该子帧配置为上行子帧。
步骤 503中, 第一网络侧设备可以监测部分或全部需要配置为上行的子帧。
千扰协调信息可以是要求第二网络侧设备如何进行调整的信息。 较佳的, 千扰协调信 息可以是下列信息中的一种: 最大发射功率门限值、 千扰承受能力门限值和功率调整值。 下面分别进行介绍。
方式一、 千扰协调信息是最大发射功率门限值。 最大发射功率门限值使千扰水平在第 一网络侧设备承受能力范围内。 最大发射功率门限值可以用于限制第二网络侧设备所有下 行子帧的发射功率, 也可以仅用于限制第二网络侧设备对其它小区有影响的下行子帧。
第一网络侧设备的承受能力可以是网络侧设备根据实际情况确定的, 或设备出厂配 置, 或标准约定等。
具体的, 步骤 501中, 第一网络侧设备根据第一网络侧设备的设备信息和 /或第二网 络侧设备的设备信息, 确定允许第二网络侧设备的最大发射功率门限值 , 并将最大发射功 率门限值作为千扰协调信息;
其中, 最大发射功率门限值用于限制第二网络侧设备的所有下行子帧的发射功率或第 二网络侧设备中对邻小区有千扰的下行子帧。
实施中, 实施中, 第一网络侧设备的设备信息包括但不限于下列信息中的至少一种: 频谱分配信息、 资源调度信息和千扰承受能力值。
第二网络侧设备的设备信息包括但不限于下列信息中的至少一种:
第二网络侧设备和第一网络侧设备之间的路径损耗值、 参考信号接收功率值、 频谱分 配信息和资源调度信息。
第一网络侧设备的设备信息和第二网络侧设备的设备信息可以是测量获得 , 或信令通 知, 或标准约定。
较佳的, 第一网络侧设备可以根据公式一或公式二确定最大发射功率门限值。
较佳的, 如果 Ia→b是第一网络侧设备可承受的第二网络侧设备的千扰门限值 , 这个 值可以是协议约定, 或设备出厂设置, 或根据实际情况计算获得(比如有用信号的接收功 率值和解调门限值, 计算出可承受的千扰门限值)。
较佳的, 第一网络侧设备根据第一网络侧设备可承受的总千扰门限, 确定^ 4→i? ; 其 中, Ia→B不大于第一网络侧设备可承受的总千扰功率值。
其中, 第一网络侧设备根据第一网络侧设备可承受的总千扰门限, 确定 Ja→B的方式 有很多种, 下面列举几种。
( 1 )、 第一网络侧设备将第一网络侧设备可承受的总千扰功率值分别乘以每个第二网 络侧设备对应的加权参数 , 得到第二网络侧设备对应的 - >B。
比如可以根据第二网络侧设备对第一网络侧设备的千扰状况, 确定每个第二网络侧设 备对应的加权参数, 例如千扰越大加权参数越大;
然后将第一网络侧设备可承受的总千扰功率值分别乘以每个第二网络侧设备对应的 加权参数 ,分别得到每个第二网络侧设备对应的 ->B。 即这种方式每个第二网络侧设备对 应的 →8有可能相同也有可能不同。
( 2 )、 第一网络侧设备将第一网络侧设备可承受的总千扰功率值除以第二网络侧设备 的数量,得到第二网络侧设备对应的 >B。即这种方式每个第二网络侧设备对应的 >B都 相同。
较佳的, 当第二网络侧设备形成的千扰在第一网络侧设备接收带宽外时, 为
0;
当第二网络侧设备形成的千扰在第一网络侧设备接收带宽外时, 根据下列方式中的至 少一种确定 ACLR和 CS , 并根据 ACLR和 CS确定 ACIRb"s
其中, 确定 ACLR和 CS的方式包括:
根据频段分配情况或资源调度情况确定 ^CJR和 /或 ACS ;
由高层通过信令通知 ^CS;
根据自身配置获得 CJR。
较佳的, 可以是测量得到, 或信令交互, 或两者结合获得。 这个值包括了 穿透损耗, 天线增益等因素。
MCL可以釆用经验值(仿真获得), 或设备出厂配置, 或协议约定的。
方式二、 千扰协调信息是千扰承受能力门限值。
具体的, 步骤 501中, 第一网络侧设备确定 Ια→β , 并将 Ia→b作为千扰协调信息; 其中, Ia→b是第一网络侧设备可承受的第二网络侧设备千扰的门限值。
较佳的, 如果 Ia→b是第一网络侧设备可承受的第二网络侧设备的千扰门限值 , 这个 值可以是协议约定, 或设备出厂设置, 或根据实际情况计算获得(比如有用信号的接收功 率值和解调门限值, 计算出可承受的千扰门限值)。 较佳的, 第一网络侧设备根据第一网络侧设备可承受的总千扰门限, 确定^ 4→i? ; 其 中, Ia→B不大于第一网络侧设备可承受的总千扰功率值。
其中, 第一网络侧设备根据第一网络侧设备可承受的总千扰门限, 确定 Ja→B的方式 有很多种, 具体可以参见方式一, 在此不再赘述。
较佳的, 当第二网络侧设备形成的千扰在第一网络侧设备接收带宽外时, A CIRb s为
0;
当第二网络侧设备形成的千扰在第一网络侧设备接收带宽外时, 根据下列方式中的至 少一种确定 ACLR和 CS , 并根据 ACLR和 CS确定 ACIRb"s
其中, 确定 ACLR和 CS的方式包括:
根据经验值确定 ^CJR和 /或 CS;
根据参考值确定 ACLR和 /或 CS;
确定 ^CJR和 /或^: S ;
由根据高层通过信令的通知确定 CS;
根据自身配置确定 CJR。
比如可以釆用其中一种方式确定 ^CS , 釆用另一种方式确定 CJR。
较佳的, 在确定多个 ^CJR时, 根据频段分配情况或资源调度情况, 从多个 ^CJR中 选择一个 ^CJR ;
在确定多个 ^CS时, 根据频段分配情况或资源调度情况, 从多个 ^CS中选择一个 较佳的, 可以是测量得到, 或信令交互, 或两者结合获得。 这个值包括了 穿透损耗, 天线增益等因素。
MCL可以釆用经验值(仿真获得), 或设备出厂配置, 或协议约定的。
方式三、 千扰协调信息是功率参考值。 对于方式三, 较佳的, 处于第一网络侧设备周 围的第二网络侧设备是对第一网络侧设备产生千扰的网络侧设备。
如果功率调整值大于 0 , 则表示功率向上调整; 如果功率调整值小于 0 , 则表示功率 向下调整; 如果功率调整值等于 0 , 则表示功率无需调整。
下面以第二网络侧设备是对第一网络侧设备产生千扰的网络侧设备为例进行说明。 具体的, 步骤 501中, 第一网络侧设备确定功率调整值 , 并将功率调整值作为千扰协 调信息。
其中, 第一网络侧设备确定功率调整值的方式有很多, 下面列举几种。
( 1 )、 第一网络侧设备根据公式五或公式六确定功率参考值值, 并根据功率参考值确 定功率调整值。
较佳的, 第一网络侧设备较佳的, 第一网络侧设备从确定的每个第二网络侧设备对应 的功率参考值中选择最小的值作为用于确定功率调整值的功率参考值, 并根据功率参考值 确定每个第二网络侧设备对应的功率调整值; 或
第一网络侧设备从确定的每个第二网络侧设备对应的功率参考值取平均作为用于确 定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络侧设备 20对应的功率 调整值。
较佳的, 第一网络侧设备可以通过下列方式中的一种确定功率调整值。
方式 A1、第一网络侧设备可以将功率参考值作为对应每个产生千扰的第二网络侧设备 的功率调整值。
方式 A2、 第一网络侧设备根据功率参考值从功率调整值集合中选择功率调整值。 较佳的, 如果第一网络侧设备可承受的千扰值大于测量得到的千扰值, 则从功率调整 集合中选择一个最接近功率参考值且不大于 0的数值作为功率调整值, 如果第一网络侧设 备可承受的千扰值不大于测量得到的千扰值 , 则从功率调整集合中选择一个最接近功率参 考值且大于 0的数值作为功率调整值。
具体可以根据需要确定功率调整集合中的值。
方式 A3、第一网络侧设备根据功率参考值从功率调整步长值集合中选择功率调整步长 值, 并将选择的功率调整步长值作为功率调整值。
较佳的, 第一网络侧设备根据预先设定的范围值和功率调整步长值集合中步长值的对 应关系, 确定功率参考值所属的范围对应的步长值。 相应的, 第二网络侧设备每次只调整 一个步长大小。
具体可以根据需要确定功率调整步长集合中的值。
( 2 )、 第一网络侧设备根据公式七或公式八确定功率参考值, 并根据功率参考值确定 功率调整值。
较佳的, 第一网络侧设备可以通过下列方式中的一种确定功率调整值。
方式 B1、第一网络侧设备可以将功率参考值作为对应每个产生千扰的第二网络侧设备 的功率调整值。
方式 B2、 第一网络侧设备根据功率参考值从功率调整值集合中选择功率调整值。 较佳的, 如果第一网络侧设备可承受的千扰值大于测量得到的千扰值, 则从功率调整 集合中选择一个最接近功率参考值且不大于 0的数值作为功率调整值, 如果第一网络侧设 备可承受的千扰值不大于测量得到的千扰值 , 则从功率调整集合中选择一个最接近功率参 考值且大于 0的数值作为功率调整值。
具体可以根据需要确定功率调整集合中的值。
方式 B3、第一网络侧设备根据功率参考值从功率调整步长值集合中选择功率调整步长 值, 并将选择的功率调整步长值作为功率调整值。 较佳的, 第一网络侧设备根据预先设定的范围值和功率调整步长值集合中步长值的对 应关系, 确定功率参考值所属的范围对应的步长值。
具体可以根据需要确定功率调整步长集合中的值。
( 3 )、 第一网络侧设备将测量得到的总千扰值 与第一网络侧设备可承受的总千扰 功率值 ^ 做差, 根据差值确定功率调整总和值; 根据功率调整总和值, 确定每个产生 千扰的第二网络侧设备的功率调整值。
较佳的, 第一网络侧设备可以将差值除以产生千扰的第二网络侧设备数量得到功率参 考值, 根据功率参考值确定每个产生千扰的第二网络侧设备的功率调整值; 或
第一网络侧设备确定每个第二网络侧设备的权值 , 并将差值分别乘以每个第二网络侧 设备的权值得到功率参考值, 根据功率参考值确定每个产生千扰的第二网络侧设备的功率 调整值。
较佳的, 第一网络侧设备可以通过下列方式中的一种确定功率调整值。
方式 C1、第一网络侧设备将功率调整值作为对应每个产生千扰的第二网络侧设备的功 率调整值。
方式 C2、 第一网络侧设备 10根据功率调整值从功率调整值集合中选择功率调整值。 较佳的, 如果第一网络侧设备可承受的千扰值大于测量得到的千扰值, 则从功率调整 集合中选择一个最接近功率参考值且不大于 0的数值作为功率调整值, 如果第一网络侧设 备可承受的千扰值不大于测量得到的千扰值 , 则从功率调整集合中选择一个最接近功率参 考值且大于 0的数值作为功率调整值。
方式 C3、第一网络侧设备根据功率调整值从功率调整步长值集合中选择功率调整步长 值, 并将选择的功率调整步长值作为功率调整值。
较佳的, 第一网络侧设备在第一网络侧设备可承受的千扰值大于测量得到的千扰值 时, 从功率调整步长集合中选择一个不大于 0的数值作为功率调整值, 在第一网络侧设备 可承受的千扰值不大于测量得到的千扰值时, 从功率调整步长集合中选择一个大于 0的数 值作为功率调整值。
较佳的, 对于方式三, 步骤 502中, 第一网络侧设备可以根据设定的时间, 周期发送 千扰协调信息。 具体时间可以根据需要进行设定。
在实施中, 第二网络侧设备可以有多个, 如果有多个第二网络侧设备, 第一网络侧设 备按照上述方式中的一种分别确定每个第二网络侧设备的千扰协调信息, 并发送给对应的 第二网络侧设备。
如图 6所示, 本发明实施例第二种进行千扰协调的方法包括下列步骤:
步骤 601、 第二网络侧设备接收第一网络侧设备确定的千扰协调信息, 其中, 第二网 络侧设备是处于第一网络侧设备周围的网络侧设备。 步骤 602、 第二网络侧设备根据收到的千扰协调信息调整下行发送功率值。
较佳的, 如果第二网络侧设备根据收到的千扰协调信息调整下行发送功率值, 则第二 网络侧设备可以调整对第一网络侧设备产生千扰的下行子帧的下行发送功率值或调整全 部下行子帧的下行发送功率值
较佳的, 如果千扰协调信息是千扰门限值, 且第二网络侧设备根据收到的千扰协调信 息调整下行发送功率值, 则第二网络侧设备根据收到的千扰协调信息, 确定最大发射功率 门限值, 根据最大发射功率门限值。 调整下行发送功率值。
较佳的, 第二网络侧设备可以根据公式三或公式四确定需要调整的下行发送功率值。 较佳的, 当第二网络侧设备形成的千扰在第一网络侧设备接收带宽外时, 为 0;
当第二网络侧设备形成的千扰在第一网络侧设备接收带宽外时, 根据下列方式中的至 少一种确定 ACLR和 CS , 并根据 ACLR和 CS确定 ACIRb"s
其中, 确定 ACLR和 CS的方式包括:
根据频段分配情况或资源调度情况确定 ^CJR和 /或 ACS ;
由高层通过信令通知 ^CS ;
根据自身配置获得 CJR。
其中, 图 5和图 6可以合成一个流程, 形成新的进行千扰协调的方法, 即先执行步骤 501和步骤 502, 然后执行步骤 601和步骤 602; 步骤 503与步骤 601和步骤 602没有必然 的时序关系, 只需要保证在步骤 502之后即可。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
由于能够向第二网络侧设备通知用于进行千扰协调的千扰协调信息, 从而在上下行业 务比例需求进行动态改变的场景下, 降低上下行配置不同导致的时隙千扰; 进一步提高了 系统稳定性和性能。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种进行千扰协调的方法, 其特征在于, 该方法包括:
第一网络侧设备确定千扰协调信息, 所述千扰协调信息用于通知处于第一网络侧设备 周围的第二网络侧设备根据所述千扰协调信息进行千扰协调;
所述第一网络侧设备向所述第二网络侧设备发送所述千扰协调信息。
2、 如权利要求 1 所述的方法, 其特征在于, 所述第一网络侧设备确定千扰协调信息 包括:
所述第一网络侧设备根据第一网络侧设备的设备信息和 /或第二网络侧设备的设备 信息, 确定允许第二网络侧设备的最大发射功率门限值 , 并将所述最大发射功率门限值作 为千扰协调信息;
其中, 最大发射功率门限值用于限制第二网络侧设备的所有下行子帧的发射功率或第 二网络侧设备中对邻小区有千扰的下行子帧的发射功率。
3、 如权利要求 2 所述的方法, 其特征在于, 所述第二网络侧设备的设备信息包括下 列信息中的至少一种:
第二网络侧设备和第一网络侧设备之间的路径损耗值、 参考信号接收功率值、 频谱分 配信息和资源调度信息;
所述第一网络侧设备的设备信息包括下列信息中的至少一种:
频谱分配信息、 资源调度信息和千扰承受能力值。
4、 如权利要求 2 所述的方法, 其特征在于, 所述第一网络侧设备根据下列公式确定 最大发射功率门限值: 尸丽— fx = →B + ACIRbs_bs + max(pathloss, MCL) 或
^nax_/x = 1A→B +纖 X hloSS, MCL) 其中, maxte是最大发射功率门限值; 是第一网络侧设备可承受的第二网络侧
ACIRbs_bs = ~~―
设备的千扰门限值; ACLRA ACSB , 其中 A LRA是第二网络侧设备的邻 道泄漏功率比值, ^是第一网络侧设备的邻道选择性值; ^^^^^ ^是路径损耗值; MC 是最小耦合损耗值。
5、 如权利要求 4 所述的方法, 其特征在于, 当所述第二网络侧设备形成的千扰在所 述第一网络侧设备接收带宽内时, 为 0;
当所述第二网络侧设备形成的千扰在所述第一网络侧设备接收带宽外时, 根据下列方 式中的至少一种确定 ACLR和 CS , 并根据 ACLR和 CS确定 ACIRb"s
其中, 确定 ^CJR和 CS的方式包括:
根据经验值确定 ACLR和 /或 CS;
根据参考值确定 ACLR和 /或 CS;
确定 ^CJR和 /或^: S ;
由高层信令确定^: S ;
根据自身配置确定 ACLR。
6、 如权利要求 5所述的方法, 其特征在于, 在确定多个 ^CJR时, 根据频段分配情况 或资源调度情况, 从多个 ACLR中选择一个 ACLR;
在确定多个 ^CS时, 根据频段分配情况或资源调度情况, 从多个 ^CS中选择一个 7、 如权利要求 1 所述的方法, 其特征在于, 所述第一网络侧设备确定千扰协调信息 包括: 所述第一网络侧设备确定 Ιαβ , 并将 Iab作为千扰协调信息; 其中, Ia→b是第一网络侧设备能够承受的第二网络侧设备千扰的门限值。
8、 如权利要求 1 所述的方法, 其特征在于, 所述第一网络侧设备确定千扰协调信息 包括:
所述第一网络侧设备确定功率调整值 , 并将功率调整值作为千扰协调信息。
9、 如权利要求 8 所述的方法, 其特征在于, 所述第一网络侧设备根据下列公式确定 功率参考值, 并根据功率参考值确定功率调整值:
PA =
Figure imgf000026_0001
- RSRPA; 或^ = mm(lA→B―寶 Α,(ή; 其中, 是功率参考值; ^4 是第一网络侧设备能够承受的第二网络侧设备千扰 的门限值; RSRPA是第一网络侧设备测量得到的第二网络测设备的参考信号接收功率值。
10、 如权利要求 8所述的方法, 其特征在于, 所述第一网络侧设备根据下列公式确定 功率参考值, 并根据功率参考值确定功率调整值; p — J ― J . P — m ( I ― I θ -
A A^B A measurement , ^ A ~ 111111 1 A→B A measurement , J , 其中, — 是第一网络侧设备测量得到的第二网络侧设备千扰值; JA→B是 第一网络侧设备能够承受的第二网络侧设备千扰的门限值。
11、如权利要求 9或 10所述的方法, 其特征在于, 所述第一网络侧设备确定功率调 整值包括:
所述第一网络侧设备从确定的每个第二网络侧设备对应的功率参考值中选择最小的 值作为用于确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络侧设备对 应的功率调整值; 或
所述第一网络侧设备从确定的每个第二网络侧设备对应的功率参考值取平均作为用 于确定功率调整值的功率参考值, 并根据功率参考值确定每个第二网络侧设备对应的功率 调整值。
12、 如权利要求 7所述的方法, 其特征在于, 所述第一网络侧设备确定功率调整值包 括: 所述第一网络侧设备将测量得到的总千扰值 /与所述第一网络侧设备可承受的总千 扰功率值 ^ 做差, 根据差值确定功率调整总和值;
所述第一网络侧设备根据功率调整总和值, 确定每个产生千扰的第二网络侧设备的功 率调整值。
13、 如权利要求 12 所述的方法, 其特征在于, 所述第一网络侧设备确定每个产生千 扰的第二网络侧设备的功率调整值包括:
所述第一网络侧设备将差值除以产生千扰的第二网络侧设备数量得到功率参考值, 根 据功率参考值确定每个产生千扰的第二网络侧设备的功率调整值; 或
所述第一网络侧设备确定每个第二网络侧设备的权值 , 并将差值分别乘以每个第二网 络侧设备的权值得到功率参考值, 根据功率参考值确定每个产生千扰的第二网络侧设备的 功率调整值。
14、 如权利要求 9 ~ 11、 13任一所述的方法, 其特征在于, 所述第一网络侧设备确定 每个产生千扰的第二网络侧设备的功率调整值包括:
所述第一网络侧设备将功率参考值作为对应每个产生千扰的第二网络侧设备的功率 调整值; 或
所述第一网络侧设备根据功率参考值从功率调整值集合中选择功率调整值; 或 所述第一网络侧设备根据功率参考值从功率调整步长值集合中选择功率调整步长值, 并将选择的功率调整步长值作为功率调整值。
15、 如权利要求 8~13 任一所述的方法, 其特征在于, 所述第一网络侧设备发送千扰 协调信息包括:
所述第一网络侧设备周期发送千扰协调信息。
16、 如权利要求 4、 7、 9和 10任一所述的方法, 其特征在于, 所述第一网络侧设备 才艮据下列步骤确定 Ia→b: 所述第一网络侧设备根据第一网络侧设备能够承受的总千扰门限, 确定 Jab; 其中, Λ→Β不大于第一网络侧设备能够承受的总千扰功率值。
17、 如权利要求 16所述的方法, 其特征在于, 所述第一网络侧设备确定^ 4→ 包括: 所述第一网络侧设备将第一网络侧设备能够承受的总千扰功率值分别乘以每个第二 网络侧设备对应的加权参数 , 得到第二网络侧设备对应的 >Β; 或
所述第一网络侧设备将第一网络侧设备能够承受的总千扰功率值除以第二网络侧设 备的数量, 得到第二网络侧设备对应的 ->B。
18、 如权利要求 1 ~ 13任一所述的方法, 其特征在于, 所述第一网络侧设备发送千扰 协调信息包括:
所述第一网络侧设备通过空中接口、 X2接口、 S1接口和终端转发中的一种方式向第 二网络侧设备发送千扰协调信息。
19、 如权利要求 1所述的方法, 其特征在于, 所述第一网络侧设备发送千扰协调信息 之后还包括:
所述第一网络侧设备监测需要配置为上行的子帧受到的千扰, 根据监测结果对子帧进 行配置, 以减少配置后子帧受到的千扰。
20、 如权利要求 19 所述的方法, 其特征在于, 所述第一网络侧设备对小区上下行子 帧进行配置包括:
如果监测的子帧受到的千扰值高于第一网络侧设备能够承受的千扰值 , 将该子帧配置 为下行子帧或不在该子帧上进行调度或提高调度用户的发送功率;
如果监测的子帧受到的千扰值不高于第一网络侧设备能够承受的千扰值 , 将该子帧配 置为上行子帧。
21、 如权利要求 19或 20所述的方法, 其特征在于, 所述第一网络侧设备监测部分或 全部需要配置为上行的子帧。
22、 一种进行千扰协调的方法, 其特征在于, 该方法包括:
第二网络侧设备接收第一网络侧设备确定的千扰协调信息, 其中第二网络侧设备是处 于第一网络侧设备周围的网络侧设备;
所述第二网络侧设备根据收到的千扰协调信息调整下行发送功率值。
23、 如权利要求 22 所述的方法, 其特征在于, 所述第二网络侧设备调整下行发送功 率值包括:
所述第二网络侧设备调整对第一网络侧设备产生千扰的下行子帧的下行发送功率值 或调整全部下行子帧的下行发送功率值。
24、如权利要求 22或 23所述的方法, 其特征在于, 所述千扰协调信息是千扰门限值; 所述第二网络侧设备调整下行发送功率值包括:
所述第二网络侧设备根据收到的千扰协调信息, 确定最大发射功率门限值; 所述第二网络侧设备根据最大发射功率门限值 , 调整下行发送功率值。
25、 如权利要求 24 所述的方法, 其特征在于, 所述第二网络侧设备根据下列公式确 定最大发射功率门限值:
P = IDL→UL + max(pathloss, MCL) . 或 Ptx = I DL→UL + ACIRbs_bs + max(pathloss,MCL) . 其中, 是最大发射功率门限值; 1 DL→UL是收到的第一网络侧设备能够承受的第 二网络侧设备千扰的门限值或收到的多个被千扰的网络侧设备通知的千扰门限值中最小
1
ACIRbs_bs = -
- + - 的千扰门限值; ACLRA ACSB , 其中 ^是第二网络侧设备的邻道泄 漏功率比值, ^是第一网络侧设备的邻道选择性值; ^是路径损耗值;
MC 是最小耦合损耗值。
26、 如权利要求 25 所述的方法, 其特征在于, 当所述第二网络侧设备形成的千扰在 所述第一网络侧设备接收带宽外时, A CIRbs-bS为 0;
当所述第二网络侧设备形成的千扰在所述第一网络侧设备接收带宽外时, 当所述第二 网络侧设备形成的千扰在所述第一网络侧设备接收带宽外时, 根据下列方式中的至少一种 确定 ACLR和 CS , 并根据 ACLR和 CS确定 ACIRb"s
其中, 确定 ACLR和 CS的方式包括:
根据频段分配情况或资源调度情况确定 ^CJR和 /或 ACS ;
由高层通过信令通知 ^CS;
根据自身配置获得 ^CJR。
27、 一种进行千扰协调的第一网络侧设备, 其特征在于, 该设备包括:
信息确定模块, 用于确定千扰协调信息, 所述千扰协调信息用于通知处于第一网络侧 设备周围的第二网络侧设备根据所述千扰协调信息进行千扰协调;
发送模块, 用于向所述第二网络侧设备发送所述千扰协调信息。
28、 如权利要求 27所述的设备, 其特征在于, 所述信息确定模块具体用于: 根据第一网络侧设备的设备信息和 /或第二网络侧设备的设备信息 , 确定允许第二网 络侧设备的最大发射功率门限值 , 并将所述最大发射功率门限值作为千扰协调信息; 其中, 最大发射功率门限值用于限制第二网络侧设备的所有下行子帧的发射功率或第 二网络侧设备中对邻小区有千扰的下行子帧的发射功率。
29、 如权利要求 28 所述的设备, 其特征在于, 所述信息确定模块根据下列公式确定 最大发射功率门限值: 尸丽— fx = →B + ACIRbs_bs + max(pathloss, MCL) 或
^nax_/x = 1A→B +纖 X hloSS, MCL) 其中, maxte是最大发射功率门限值; 是第一网络侧设备能够承受的第二网络
ACIRbs_bs = ~~― 侧设备的千扰门限值; ACLRA , 其中 ^是第二网络侧设备的 邻道泄漏功率比值, ^5^是第一网络侧设备的邻道选择性值; PatWoss是路径损耗 值; MC 是最小耦合损耗值。
30、 如权利要求 27所述的设备, 其特征在于, 所述信息确定模块具体用于: 确定 Ια→β , 并将 Ia→b作为千扰协调信息; 其中, 是第一网络侧设备能够承受的第二网络侧设备千扰的门限值。
31、 如权利要求 27所述的设备, 其特征在于, 所述信息确定模块具体用于: 确定功率调整值, 并将功率调整值作为千扰协调信息。
32、 如权利要求 31所述的设备, 其特征在于, 所述信息确定模块具体用于: 根据下列公式确定功率参考值, 并根据功率参考值确定功率调整值; PA =
Figure imgf000031_0001
- RSRPA; 或^ = mm(lA→B―寶 Α,(ή; 其中, PA是功率参考值; JA→B是第一网络侧设备能够承受的第二网络侧设备千扰 的门限值; RSRPA是第一网络侧设备测量得到的第二网络测设备的参考信号接收功率值。
33、 如权利要求 31 所述的设备, 其特征在于, 所述信息确定模块具体用于: 功率参 考值, 并根据功率参考值确定功率调整值; PA― A→B ^ A measurement; 或^ 4 — ^ A→B - I A measurement , ; 其中, — 是第一网络侧设备测量得到的第二网络侧设备千扰值; JA→B是 第一网络侧设备能够承受的第二网络侧设备千扰的门限值。
34、 如权利要求 32或 33所述的设备, 其特征在于, 所述信息确定模块具体用于: 从确定的每个第二网络侧设备对应的功率参考值中选择最小的值作为每个第二网络 侧设备对应的功率调整值; 或从确定的每个第二网络侧设备对应的功率参考值取平均作为 每个第二网络侧设备对应的功率调整值。
35、 如权利要求 31所述的设备, 其特征在于, 所述信息确定模块具体用于: 将测量得到的总千扰值 /与所述第一网络侧设备能够承受的总千扰功率值 I ACCEPT做 差, 根据差值确定功率调整总和值; 根据功率调整总和值, 确定每个产生千扰的第二网络 侧设备的功率调整值。
36、 如权利要求 35所述的设备, 其特征在于, 所述信息确定模块具体用于: 将差值除以产生千扰的第二网络侧设备数量得到功率参考值, 根据功率参考值确定每 个产生千扰的第二网络侧设备的功率调整值; 或
确定每个第二网络侧设备的权值 , 并将差值分别乘以每个第二网络侧设备的权值得到 功率参考值, 根据功率参考值确定每个产生千扰的第二网络侧设备的功率调整值。
37、 如权利要求 32 ~ 34、 36任一所述的设备, 其特征在于, 所述信息确定模块具体 用于:
将功率参考值作为对应每个产生千扰的第二网络侧设备的功率调整值; 或
根据功率参考值从功率调整值集合中选择功率调整值; 或 根据功率参考值从功率调整步长值集合中选择功率调整步长值, 并将选择的功率调整 步长值作为功率调整值。
38、 如权利要求 31~36任一所述的设备, 其特征在于, 所述发送模块具体用于: 周期 发送千扰协调信息。
39、 如权利要求 29、 30、 32或 33所述的设备, 其特征在于, 所述信息确定模块具体 用于: 根据第一网络侧设备可承受的总千扰门限, 确定 Ja→b; 其中, Λ→Β不大于第一网络侧设备能够承受的总千扰功率值。
40、 如权利要求 38所述的设备, 其特征在于, 所述信息确定模块具体用于: 将第一网络侧设备能够承受的总千扰功率值分别乘以每个第二网络侧设备对应的加 权参数 ,得到第二网络侧设备对应的 ->Β; 或将第一网络侧设备能够承受的总千扰功率值 除以第二网络侧设备的数量, 得到第二网络侧设备对应的 ->B。
41、 如权利要求 27 ~ 36任一所述的设备, 其特征在于, 所述发送模块具体用于: 通过空中接口、 X2接口、 S1接口和终端转发中的一种方式向第二网络侧设备发送千 扰协调信息。
42、 如权利要求 27所述的设备, 其特征在于, 所述第一网络侧设备还包括: 配置模块, 用于在发送千扰协调信息之后, 监测需要配置为上行的子帧受到的千扰, 根据监测结果对子帧进行配置 , 以减少配置后子帧受到的千扰。
43、 如权利要求 42所述的设备, 其特征在于, 所述配置模块具体用于:
如果监测的子帧受到的千扰值高于第一网络侧设备能够承受的千扰值 , 将该子帧配置 为下行子帧或不在该子帧上进行调度或提高调度用户的发送功率;
如果监测的子帧受到的千扰值不高于第一网络侧设备能够承受的千扰值 , 将该子帧配 置为上行子帧。
44、 如权利要求 42或 43所述的设备, 其特征在于, 所述配置模块监测部分或全部需 要配置为上行的子帧。
45、 一种进行千扰协调的第二网络侧设备, 其特征在于, 该设备包括:
接收模块, 用于接收第一网络侧设备确定的千扰协调信息, 其中第二网络侧设备是处 于第一网络侧设备周围的网络侧设备;
处理模块, 用于根据收到的千扰协调信息调整下行发送功率值。
46、 如权利要求 45所述的设备, 其特征在于, 所述处理模块具体用于: 在调整下行发送功率值时, 调整对第一网络侧设备产生千扰的下行子帧的下行发送功 率值或调整全部下行子帧的下行发送功率值。
47、 如权利要求 45或 46所述的设备, 其特征在于, 所述处理模块具体用于: 在整下行发送功率值, 且所述千扰协调信息是千扰门限值时, 根据收到的千扰协调信 息, 确定最大发射功率门限值, 根据最大发射功率门限值, 调整下行发送功率值。
48、 如权利要求 47 所述的设备, 其特征在于, 所述处理模块根据下列公式确定最大 发射功率门限值:
P = IDL→UL + max(pathloss, MCL) . 或 Ptx = I DL→UL + ACIRbs_bs + max(pathloss,MCL) . 其中, 是最大发射功率门限值; 1 DL→UL是收到的第一网络侧设备能够承受的第 二网络侧设备千扰的门限值或收到的多个被千扰的网络侧设备通知的千扰门限值中最小
1
ACIRbs_bs = -
- + - 的千扰门限值; ACLRA ACSB , 其中 ^是第二网络侧设备的邻道泄 漏功率比值, ^是第一网络侧设备的邻道选择性值; ^是路径损耗值;
MC 是最小耦合损耗值。
49、 一种进行千扰协调的系统, 其特征在于, 该系统包括:
第一网络侧设备, 用于确定千扰协调信息, 向处于第一网络侧周围的第二网络侧设备 发送千扰协调信息;
第二网络侧设备, 用于根据收到的千扰协调信息调整下行发送功率值。
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