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WO2014169488A1 - 一种异制式系统下的干扰协调方法、装置和设备 - Google Patents

一种异制式系统下的干扰协调方法、装置和设备 Download PDF

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Publication number
WO2014169488A1
WO2014169488A1 PCT/CN2013/074468 CN2013074468W WO2014169488A1 WO 2014169488 A1 WO2014169488 A1 WO 2014169488A1 CN 2013074468 W CN2013074468 W CN 2013074468W WO 2014169488 A1 WO2014169488 A1 WO 2014169488A1
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Prior art keywords
cell
time
information
interference
frequency resource
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PCT/CN2013/074468
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English (en)
French (fr)
Inventor
邓天乐
罗海燕
陈啸
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2013/074468 priority Critical patent/WO2014169488A1/zh
Priority to EP13882434.7A priority patent/EP2981117B1/en
Priority to CN201380002024.4A priority patent/CN104247487B/zh
Publication of WO2014169488A1 publication Critical patent/WO2014169488A1/zh
Priority to US14/885,316 priority patent/US20160044699A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04W72/542Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/54Signalisation aspects of the TPC commands, e.g. frame structure
    • 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
    • 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 communications, and in particular, to a method, device and device for interference coordination in a heterogeneous system.
  • the 900 MHz and 1800 MHz bands are currently mainly used for the GSM network.
  • 3G services are mainly carried in the 2.1GHz frequency band, and the network load of the original GSM900 and GSM1800 simultaneously carrying voice is gradually reduced. Therefore, GSM900 and GSM1800 can gradually reform the spectrum for more advanced and more spectrally efficient UMTS/LTE networks.
  • Spectrum Refarming is a better choice for maintaining network competitiveness, reducing investment, and rapidly deploying LTE networks.
  • the penetration rate of GSM users has remained high for a long time in the development of LTE, and GSM The user's capacity demand changes in a gradual trend.
  • each time division multiple access (TDMA) frame at a frequency point contains 8 time slots (TSO, TS1, TS7, respectively), and each time slot has a length of 0.557. Ms.
  • the frequency point is assumed to be C. CC N , then the TSO of the frequency C Q is mainly used for the broadcast channel and the common control channel, and the TS 1 of the C Q is mainly used for the dedicated control channel, the frequency point C. TS0 ⁇ TS7 and other frequency points TS0 ⁇ TS7 are mainly used for traffic channels.
  • the TS of Co is mainly used for broadcast, public control and dedicated control channels, and the remaining TS1 ⁇ TS7 are used for traffic channels.
  • the granularity of the LTE system scheduling allocation is a physical resource block (PRB) pair, it occupies 1 ms in the time domain and occupies 12 subcarriers in the frequency domain for a total of 180 kHz.
  • PRB physical resource block
  • the base station of the GSM network has a high transmit power.
  • the power of one carrier (200 kHz bandwidth) is 20 W, while the base station of the LTE network has relatively low transmit power.
  • the transmit power of the 10 MHz bandwidth is 40 W
  • the average transmit power per RB (180 kHz) is 0.8W/180kHz, far lower than the transmit power of the base station in GSM network at unit Hertz. Therefore, when the LTE network shares the spectrum deployment with the GSM network, the GSM cell strong power transmission signal will seriously interfere with the LTE cell signal. This shows that how to coordinate the interference between the GSM and LTE cells and ensure the reliability of the system when the different systems share the spectrum will be a major problem of the coexistence spectrum of the different systems.
  • a solution provided by the prior art is: allocate different carrier frequency resources for different networks, even in a spectrum sharing scenario, for example, in a scenario of frequency sharing, for GSM network allocation.
  • the carrier frequency resource is not allocated to the LTE network, thereby avoiding interference of the GSM network to the LTE network.
  • GSM uses the carrier frequency to determine whether LTE can use the frequency band, which not only violates the original intention of frequency sharing, but also seriously limits the scope of GSM usable resources. In other words, the prior art is to some extent sacrificed frequency. In exchange for reducing interference at the cost, it is not conducive to the efficiency of spectrum sharing. Summary of the invention
  • Embodiments of the present invention provide a method, device, and device for interference coordination in a heterogeneous system to improve the utilization efficiency of wireless spectrum resources while eliminating co-channel interference.
  • a first aspect of the embodiments of the present invention provides an interference coordination method in a heterogeneous system, where the method includes: acquiring time-frequency resource information of a first cell and interference relationship information between the first cell and the second cell, The interference relationship information of the first cell and the second cell is used to determine interference of the first cell to the second cell at a time frequency, and the first cell and the second cell have different standards. ;
  • the acquiring the time-frequency resource information of the first cell includes: receiving the first cell sent by the base station of the first cell Frequency resource information.
  • the acquiring the interference relationship information of the first cell and the second cell includes:
  • the time-frequency resource information of the first cell includes at least the first cell Any one of frequency information, power information of the carrier frequency, information of a time slot, and power information on the time slot.
  • the interference relationship information of the first cell and the second cell includes at least Interference information of the first cell to the second cell.
  • the time-frequency resource information and the interference according to the first cell according to any one of the second possible implementation manners of the first aspect, Relationship information, determining time-frequency resource information of the second cell, including:
  • the time-frequency resource information of the second cell is specifically used to indicate that the second cell uses the first carrier of the second cell to perform cross-carrier Scheduling a second carrier of the second cell, where the second carrier includes a time-frequency resource shared by the first cell and the second cell.
  • the method further includes: sending time-frequency resource information of the second cell to a base station of the second cell.
  • a second aspect of the embodiments of the present invention provides an interference coordination apparatus in a heterogeneous system, where the apparatus includes: an acquiring module, configured to acquire time-frequency resource information of a first cell, and the first cell and the second cell Interference relationship information, the interference relationship information of the first cell and the second cell is used for Determining interference of the first cell to the second cell in a time frequency, where the first cell and the second cell have different standards;
  • a determining module configured to determine time-frequency resource information of the second cell according to the time-frequency resource information of the first cell and the interference relationship information, where time-frequency resource information of the second cell is used for the second cell Perform time-frequency resource scheduling.
  • the acquiring module includes: a first receiving unit, configured to receive a time-frequency resource of the first cell that is sent by a base station of the first cell information.
  • the acquiring module includes: a second receiving unit, configured to receive the interference relationship information that is sent by the base station of the second cell.
  • the time-frequency resource information of the first cell includes at least carrier frequency information of the first cell, Any one of the power information of the carrier frequency, the information of the time slot, and the power information on the time slot.
  • the interference relationship information of the first cell and the second cell includes at least interference information of the first cell to the second cell.
  • the first determining module is specifically configured to determine determining an available time frequency of the second cell The strength information of the resource, the unavailable time-frequency resource, or the interference of the time-frequency resource of the second cell.
  • the time-frequency resource information of the second cell is specifically used to indicate that the second cell uses the first carrier of the second cell to perform cross-carrier Scheduling a second carrier of the second cell, where the second carrier includes a time-frequency resource shared by the first cell and the second cell.
  • the device further includes: a sending module, configured to send time-frequency resource information of the second cell to a base station of the second cell.
  • the base station of the second cell is configured according to the time-frequency resource of the first cell.
  • the information and the interference relationship information of the first cell and the second cell determine time-frequency resource information of the second cell used for time-frequency resource scheduling by the second cell. Therefore, compared with the method for allocating different carrier frequency resources for different networks, the method provided by the embodiment of the present invention can eliminate the interference of the GSM system on the LTE system and improve the utilization efficiency of the wireless spectrum resources. And the purpose of rapid deployment of LTE can be achieved through spectrum re-engineering.
  • FIG. 1 is a schematic flowchart of an interference coordination method in a heterogeneous system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of network planning of a second cell of an LTE system and a first cell of a GSM system according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a situation in which a cell in a second cell is occupied by a carrier in the second cell according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an interference coordination device in a heterogeneous system according to an embodiment of the present invention. Schematic diagram of the structure of the interference coordination device under the heterogeneous system provided;
  • FIG. 6 is a schematic structural diagram of an interference coordination device in a heterogeneous system according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an interference coordination apparatus in a heterogeneous system according to another embodiment of the present invention.
  • the executive body may be a central node that jointly manages network services of two different types of cells.
  • a multi-system controller that jointly manages GSM and LTE network services may also be one of two different types of cells, for example, a base station device using a cell of the LTE system.
  • the method of the exemplary embodiment of FIG. 1 mainly includes step S101 and step S102, which are described in detail as follows:
  • S101 Obtain time-frequency resource information of the first cell, and interference relationship information of the first cell and the second cell, where interference relationship information of the first cell and the second cell is used to determine the first
  • the interference of the cell to the second cell in the time-frequency, the first cell and the second cell have different systems.
  • the first cell may be a cell adopting the GSM standard
  • the second cell may be a cell adopting the LTE standard.
  • the time-frequency resource information of the first cell may be passively acquired, that is, the multi-system controller receives the time-frequency of the first cell sent by the base station of the first cell.
  • the resource information may also be: actively acquiring the time-frequency resource information of the first cell, that is, the multi-system controller sends a request message for requesting to report the video resource information of the first cell to the base station of the first cell, and the base station of the first cell After receiving the request message, the time-frequency resource information of the first cell is returned to the multi-system controller.
  • the base station of the second cell may receive the time-frequency resource information of the first cell sent by the base station of the first cell, or the base station of the second cell. Sending a request message for requesting to report the video resource information of the first cell to the base station of the first cell, after receiving the request message, the base station of the first cell returns the time-frequency resource of the first cell to the base station of the second cell. information.
  • the acquisition of the interference relationship information of the first cell and the second cell also includes passive acquisition and active acquisition.
  • the passive acquisition includes: receiving, by the multi-system controller, interference relationship information between the first cell and the second cell sent by the base station of the second cell; the active acquiring includes: sending, by the multi-system controller, the base station of the second cell After requesting to report the interference relationship information of the first cell and the second cell, the base station of the second cell returns the interference relationship between the first cell and the second cell to the multi-system controller after receiving the request message.
  • the interference relationship information of the first cell and the second cell may be completed in two steps by initially determining the interference relationship information and accurately determining the interference relationship information. For initially determining the interference relationship information, it may be obtained by network planning data or drive test data.
  • FIG. 2 it is a network plan diagram of the second cell of the LTE system and the first cell of the GSM system.
  • the coverage area 1 is the cell 1 in the second cell (ie, the cell of the LTE system) and the first cell (ie, the cell in the GSM system).
  • the coverage area of cell 1, the other numbers are represented as the coverage area of the second cell and the first cell.
  • the second cell is also interfered by different strengths of the same frequency first cell.
  • the first cell that generates strong interference has the first cell numbered ⁇ 1 ⁇ , the measured signal strength is [-30 dBm, -70 dBm], and the first cell that generates the second strongest interference has the number ⁇ 4, 7, 10, 13
  • the first cell of 16, 16, 22, 22, the measured signal strength is [-85dBm, -95dBm], and the first cell with weak interference generated is numbered ⁇ 27, 34, 37, 40, 43 , 46, 47 ⁇ ,
  • the measured signal strength is [-lOOdBm, -110dBm].
  • the interference relationship information between the first cell and the second cell may be initially determined based on the geographic location information. Specifically, the multi-system controller obtains the geography of the second cell and each first cell according to the network planning data.
  • the location information for example, the cell 1 in the first cell and the cell 1 in the second cell have the same geographical location, and the cell 1 in the first cell is considered to be the strong interferer cell of the second cell, and the number in the first cell is 4, 7, 10, 13, 16, 19, 22, the distance between the cell and the second cell is the same or similar, for example, 500m, then the first 'J, the number in the zone is 4, 7 , 10, 13 , 16, 19
  • the cell of 22 is the second strongest interferer cell of the second cell, and the cells of the first cell numbered 27, 34, 37, 40, 43, 46, 47 are the same or similar to the second cell, for example, 1000 m.
  • the cells numbered 27, 34, 37, 40, 43, 46, 47 in the first 'area are the weak interference source cells of the second cell.
  • the qualitative analysis result of the above strong interference, the second strong interference or the weak interference may be used as the interference information of the first cell to the second cell.
  • the foregoing determining the interference relationship information between the first cell and the second cell may also be that the second cell is measured by the terminal (may be different system inter-frequency measurement, or may be the same system same frequency measurement, specifically see the first Obtaining whether the frequency used by the cell and the second cell are the same.
  • the base station of the second cell sends the acquired interference relationship information of the first cell and the second cell to the multi-system controller, so that the multi-system controller obtains the second The interference relationship from the first cell perceived by the cell.
  • the second cell measurement obtains that the cell 1 in the second cell is interfered by the same frequency of the first cell in addition to the interference of the same frequency second cell, and the first cell that generates strong interference has the number ⁇ 1 ⁇ .
  • the measured signal strength is [-30 dBm, -70 dBm]
  • the first cell that produces the second strongest interference has the first 'area numbered ⁇ 4, 7, 10, 13, 16, 19, 22 ⁇ , measured
  • the signal strength is [-85dBm, -95dBm]
  • the first cell with weak interference is numbered ⁇ 2 7 , 34, 37, 40, 43 , 46, 47 ⁇
  • the measured signal strength is [-lOOdBm, - 110dBm].
  • S102 Determine, according to the time-frequency resource information of the first cell and the interference relationship information, The time-frequency resource information of the second cell, and the time-frequency resource information of the second cell is used by the second cell for time-frequency resource scheduling.
  • the time-frequency resource information of the first cell includes at least one of carrier frequency information of the first cell, power information of the carrier frequency, information of a time slot, and power information on the time slot.
  • the base station of the first cell may increase/decrease the GSM service carrier correspondingly, or adjust the carrier power size, and the base station of the first cell may use the carrier frequency information of the first cell and/or the The power information of the carrier frequency is transmitted to the base station of the second cell or the multi-system controller.
  • the base station of the first cell may also use the information of the time slot and the power information on the time slot as the first cell.
  • the time-frequency resource information is sent to the base station of the second cell or a multi-system controller.
  • the acquisition of the interference relationship information of the first cell and the second cell includes preliminary determining the interference relationship information and accurately determining the interference relationship information.
  • the interference relationship information is initially determined, for example, only the strongest interference source cell and the secondary strong interference source cell are considered, or only the interference source cell whose measured signal strength is greater than a certain threshold is considered. Take only the strongest interference source cell and the second strong interference source cell as examples.
  • the multi-system controller obtains the situation that each cell in the second cell occupies the carrier as shown in FIG.
  • the interference relationship information between the first cell and the second cell is accurately determined.
  • the method 1 is based on the path loss coefficient obtained by the geographic location of the first cell and the second cell, and combines the carrier frequency information of the first cell and/or the power of the carrier frequency. Information, obtaining interference relationship information between the first cell and the second cell. Specifically, assuming that the distances of the GSM cells ⁇ , . , . , LTE and LTE cells are dl and dN respectively, and the transmit powers are pi and N, respectively, the interference strength that LTE may be subjected to on / i can be expressed by the following formula:
  • I(f i ) ⁇ A j (f i ) Pj L j ( 1 )
  • the cell of 19, 22 is the second strong interference source cell, and the interference strength of the second cell at / 1 , , / 3 and / 4 is
  • I(fi) Pi + p 4 L 4 + p w L w + p n L n + p l6 L l6 + p 22 L 22
  • the interference strength received by the second cell on each carrier can be finally determined.
  • the interference relationship information of the first cell and the second cell is accurately determined, and the method 2 is based on the path loss coefficient obtained by the geographic location of the first cell and the second cell, and combines the carrier frequency information of the first cell and/or the power of the carrier frequency.
  • the weighting coefficient of the cell numbered 1 in the first cell is 0.3, and the weighting coefficients of the numbers in the first cell are 4, 7, 10, 13, 16, 19, and 22 are respectively 0.1 (of course, according to the actual situation, the coefficient may be Different), the interference strength that the second cell may be subjected to on / i can be expressed by the following formula: Where / is the weighting coefficient of the cell Q of 08 ⁇ 1, and finally the interference strength received by the second cell on each carrier can be determined.
  • the third method for accurately determining the interference relationship between the first cell and the second cell is based on the path loss coefficient obtained by the geographic location of the first cell and the second cell, combining the information of the time slot of the first cell and/or the power on the time slot.
  • I ⁇ f i ,slot k ) j A ] ⁇ f i ,k)p ] ⁇ i,k)L ] (3)
  • /( , ⁇ 3 ⁇ 4) indicates that the second cell is in the carrier frequency / i time slot /
  • Equation (4) calculates that the second cell is subjected to interference strength from the first cell on time-frequency resources (specific carrier frequencies, specific time slots).
  • the second cell may be subjected to the interference strength from the first cell on the time-frequency resource (specific time slot) by the following formula (5).
  • I(slot k ) f j C j (k)p j (k)L j (5)
  • C() l indicates that the cell occupies a slot ⁇ otherwise the cell does not occupy a slot.
  • t t) is the transmit power of the cell numbered in the first cell on the time slot, that is, the transmit power of the first cell j on all carrier frequencies is the same by default.
  • the second cell may also be calculated according to the following formula (6).
  • the second cell may be calculated by the following formula (8)
  • the time-frequency resource (specific time slot) is subject to interference strength from the first cell.
  • the multi-system controller can determine the first
  • the time-frequency resource information of the second cell specifically includes determining the available time-frequency resources of the second cell, the unavailable time-frequency resources, or the strength information of the interference of the time-frequency resources of the second cell. For example, when the second cell corresponding to the RB that is subject to interference is obtained according to the carrier frequency that generates the interference, the available time-frequency resources of the second cell, that is, the RBs that are not interfered, may be determined accordingly.
  • the multi-system controller may send the time-frequency resource information of the second cell to the base station of the second cell for the second cell to perform time-frequency resource scheduling. For example, avoiding interfered RBs or reduced order scheduling during scheduling.
  • the time-frequency resource information of the second cell is sent, the time-frequency resource of the second cell and the strength information of the interference received by the second cell may be sent to the base station of the second cell, where the intensity information of the interference may be according to the above formula.
  • the second cell is strongly interfered with the resource blocks numbered RB4, RB5, and RB29 and the corresponding time slots SFN0 SFSFN40, and the second cells are numbered RB30, RB14, and RB46.
  • the resource block and the corresponding time slots SFN12 to SFN54 are subjected to the second strong interference, and the multi-system controller may be ⁇ SFN0-SFN40, RB4, RB5, RB29, strong interference ⁇ and ⁇ SFN12 ⁇ SFN54, RB30, RB14, RB46, times.
  • the form of strong interference ⁇ transmits the time-frequency resource information of the second cell to the base station of the second cell.
  • the time-frequency resource information of the second cell is used for time-frequency resource scheduling in the second cell, and the time-frequency resource information of the second cell is specifically used to indicate that the second cell uses the second cell.
  • the second carrier of the second cell is configured by using a carrier, and the second carrier includes a time-frequency resource shared by the first cell and the second cell.
  • the base station of the second cell determines, according to the time-frequency resource information of the first cell and the interference relationship information between the first cell and the second cell.
  • the time-frequency resource information of the second cell used for the time-frequency resource scheduling of the second cell. Therefore, compared with the method for allocating different carrier frequency resources for different networks provided by the prior art, the method provided by the embodiment of the present invention can eliminate the interference of the same-frequency GSM system to the LTE system, and improve the utilization efficiency of the wireless spectrum resources. And the purpose of rapid deployment of LTE can be achieved through spectrum re-engineering.
  • FIG. 4 it is a schematic structural diagram of an interference coordination apparatus under a heterogeneous system according to an embodiment of the present invention.
  • the interference coordination device in the heterogeneous system illustrated in FIG. 4 may be a multi-system controller or a network side device of a cell of the LTE system, for example, a base station, etc., or may be a function module in the multi-system controller or the base station. It includes an obtaining module 401 and a determining module 402, wherein:
  • the obtaining module 401 is configured to acquire time-frequency resource information of the first cell and interference relationship information of the first cell and the second cell, where interference relationship information of the first cell and the second cell is used for determining The first cell has interference with the second cell at a time frequency, and the first cell and the second cell have different standards;
  • the determining module 402 is configured to determine time-frequency resource information of the second cell according to the time-frequency resource information of the first cell and the interference relationship information, where the time-frequency resource information of the second cell is used for the second The cell performs time-frequency resource scheduling.
  • each functional module is merely an example, and the actual application may be according to requirements, such as corresponding hardware configuration requirements or software.
  • the above-mentioned function allocation is completed by different functional modules, that is, the internal structure of the interference coordination device under the heterogeneous system is divided into different functional modules to complete all or part of the functions described above.
  • the corresponding function module in this embodiment may be implemented by corresponding hardware, or may be performed by corresponding hardware to execute corresponding software.
  • the foregoing acquiring module may be configured to perform the foregoing acquisition.
  • the processor may be a general processor or other hardware device capable of executing a corresponding computer program to perform the foregoing functions.
  • the determining module may further include performing the foregoing time-frequency resource information according to the first cell and the Interference relationship information, hardware for determining the time-frequency resource information function of the second cell, such as a determiner, may also be a general processor or other hardware device capable of executing a corresponding computer program to perform the foregoing functions (the implementations provided in this specification) The above described principles can be applied to the examples).
  • the first cell may be a cell adopting the GSM standard
  • the second cell may be a cell adopting the LTE standard.
  • time-frequency resource information of the first cell may be passively acquired. That is, the acquisition module 401 illustrated in FIG. 4 may further include a first receiving unit 501, such as the interference coordination device in the heterogeneous system provided by another embodiment of the present invention as shown in FIG.
  • the first receiving unit 501 receives the time-frequency resource information of the first cell sent by the base station of the first cell.
  • the obtaining module 401 may also be configured to actively acquire time-frequency resource information of the first cell, that is, the multi-system controller sends a request message for requesting reporting of video resource information of the first cell to the base station of the first cell, where the base station of the first cell After receiving the request message, the time-frequency resource information of the first cell is returned to the multi-system controller.
  • the base station of the cell of the second cell may receive the time-frequency resource information of the first cell sent by the base station of the first cell, or The base station of the second cell sends a request message for requesting to report the video resource information of the first cell to the base station of the first cell, and the base station of the first cell returns the first message to the base station of the second cell after receiving the request message.
  • Time-frequency resource information of the cell may be received from the base station of the second cell, that is, the LTE system.
  • the acquisition of the interference relationship information of the first cell and the second cell also includes passive acquisition and active acquisition, that is, the acquisition module 401 illustrated in FIG. 4 may further include a second receiving unit 601, as shown in FIG.
  • the second receiving unit 601 receives the interference relationship information of the first cell and the second cell that are sent by the base station of the second cell.
  • the active acquisition includes: the multi-system controller sends a request to the base station of the second cell to request to report the first cell and The request message of the interference relationship information of the second cell, after receiving the request message, the base station of the second cell returns the interference relationship information of the first cell and the second cell to the multi-system controller.
  • the first cell and the The interference relationship information of the second cell may be completed by the obtaining module 401 initially determining the interference relationship information and accurately determining the interference relationship information.
  • the acquisition module 401 can obtain the network planning data or the road test data.
  • FIG. 2 it is a network planning diagram of the second cell of the LTE system and the first cell of the GSM system.
  • the coverage area 1 is the coverage area of the cell 1 in the second cell (ie, the cell of the LTE system) and the cell 1 in the first cell (ie, the cell in the GSM system), and other numbers are represented as the coverage of the second cell and the first cell.
  • the second cell is also interfered by different strengths of the same frequency first cell.
  • the first cell that generates strong interference has the first cell numbered ⁇ 1 ⁇ , the measured signal strength is [-30dBm, -70dBm], and the first cell that generates the second strongest interference has the number ⁇ 4, 7 , 10, 13 , 16, 19, 22 ⁇ , the first cell, the measured signal strength is [-85dBm, -95dBm], and the first cell with weak interference generated is numbered ⁇ 27, 34, 37, 40, 43 , 46, 47 ⁇ ,
  • the measured signal strength is [-lOOdBm, -110dBm].
  • the interference relationship information between the first cell and the second cell may be initially determined based on the geographic location information.
  • the obtaining module 401 obtains the geographic location of the second cell and each first cell according to the network planning data. For example, if the cell 1 in the first cell and the cell 1 in the second cell have the same geographical location, the cell 1 in the first cell is considered to be the strong interferer cell of the second cell, and the number in the first cell is 4
  • the distance between the cell of the 7, 10, 13, 16, 19, 22 and the second cell is the same or similar, for example, 500m, and the number in the first 'area is 4, 7, 10, 13, 16, 19, 22
  • the cell is the second strongest interferer cell of the second cell, and the cells of the first cell numbered 27, 34, 37, 40, 43, 46, 47 are the same or similar to the second cell, for example, 1000 m,
  • the cells numbered 27, 34, 37, 40, 43, 46, 47 in a cell are weak interferer cells of the second cell.
  • the foregoing determining the interference relationship information between the first cell and the second cell may also be that the second cell is measured by the terminal (may be different system inter-frequency measurement, or may be the same system same frequency measurement, specifically see the first Obtaining whether the frequency used by the cell and the second cell are the same.
  • the base station of the second cell sends the acquired interference relationship information of the first cell and the second cell to the multi-system controller, so that the multi-system controller obtains the second The interference relationship from the first cell perceived by the cell.
  • the second cell measurement obtains that the cell 1 in the second cell is interfered by the same frequency of the first cell in addition to the interference of the same frequency second cell, and the first cell that generates strong interference has the number ⁇ 1 ⁇ .
  • the signal strength is [-30dBm, -70dBm]
  • the first cell that produces the second strongest interference has the first 'area numbered ⁇ 4, 7, 10, 13, 16, 19, 22 ⁇ , and the measured signal strength is [ -85dBm, -95dBm]
  • the first cell with weak interference generated is numbered ⁇ 2 7 , 34, 37, 40, 43 , 46, 47 ⁇
  • the measured signal strength is [-lOOdBm, -110dBm].
  • the time-frequency resource information of the first cell includes at least carrier frequency information of the first cell, power information of the carrier frequency, and time slot. Any one of information and power information on the time slot.
  • the base station of the first cell may increase/decrease the GSM service carrier correspondingly, or adjust the carrier power size, and the base station of the first cell may use the carrier frequency information of the first cell and/or the The power information of the carrier frequency is transmitted to the base station of the second cell or the multi-system controller.
  • the base station of the first cell may also use the information of the time slot and the power information on the time slot as the first cell.
  • the time-frequency resource information is sent to the base station of the second cell or a multi-system controller.
  • the acquisition of the interference relationship information of the first cell and the second cell includes preliminary determining the interference relationship information and accurately determining the interference relationship information.
  • the interference relationship information is initially determined, for example, only the strongest interference source cell and the secondary strong interference source cell are considered, or only the interference source cell whose measured signal strength is greater than a certain threshold is considered. Take only the strongest interference source cell and the second strong interference source cell as examples.
  • the multi-system controller obtains the situation that each cell in the second cell occupies the carrier as shown in FIG.
  • the determining module 402 accurately determines the interference relationship information of the first cell and the second cell, and the method 1 combines the path loss information obtained by the first cell and the second cell with the carrier frequency information of the first cell and/or the carrier frequency.
  • the power information obtains interference relationship information between the first cell and the second cell. Specifically, the distance between the GSM cell ⁇ , . , .
  • means the first 'J
  • Lj d
  • the path loss coefficient is the path loss coefficient
  • the range is between -2 and -4.
  • I(fi) Pi + p 4 L 4 + p w L w + p n L n + p l6 L l6 + p 22 L 22
  • the determining module 402 accurately determines the interference relationship information of the first cell and the second cell, and the method 2 is the path loss coefficient obtained by the geographic location of the first cell and the second cell, combined with the carrier frequency information of the first cell and/or the carrier frequency.
  • the power information sets weighting coefficients for the interference source cells of different interference strengths. When only the strong interference source and the secondary strong interference source cell are considered, the strong interference source and the secondary strong interference source are given different weights.
  • the weighting coefficient of the cell numbered 1 in the first cell is 0.3, and the weighting coefficients of the numbers in the first cell are 4, 7, 10, 13, 16, 19, and 22 are respectively 0.1 (of course, according to the actual situation, the coefficient may be Different), the interference intensity that may be received on the second cell ⁇ /i can be expressed by the following formula:
  • I(f i ) J A j ⁇ f i )p j j ( 2 ) where / ⁇ is the weighting coefficient of the GSM cell j, and finally the interference strength received by the second cell on each carrier can be determined.
  • the determining module 402 accurately determines the interference relationship information of the first cell and the second cell, and the method 3: the path loss coefficient obtained by the geographic location of the first cell and the second cell, combined with the information of the time slot of the first cell and/or the time
  • the determining module 402 may calculate the interference strength of the second cell from the first cell on the time-frequency resource (specific carrier frequency, specific time slot) by the following formula (4).
  • the determining module 402 may calculate, according to the following formula (5), the interference strength of the second cell from the first cell on the time-frequency resource (specific time slot).
  • I(slot k ) f j C j (k)p j (k)L j (5)
  • c() l indicates that the cell occupies a slot ⁇ otherwise the cell does not occupy a slot.
  • t t) is the transmit power of the cell numbered in the first cell on the time slot, that is, the transmit power of the first cell j on all carrier frequencies is the same by default.
  • the determining module 402 may also calculate the second method by using the following formula (6).
  • the acquired time-frequency resource of the first cell is the information of the time slot
  • the interference relationship information is the path loss information obtained according to the geographical location information
  • the time-frequency resource is the information of the time slot, and the interference relationship information is the base area.
  • the determining module 402 may calculate the interference strength of the second cell from the first cell on the time-frequency resource (specific time slot) by the following formula (8).
  • the multi-system controller can determine the first
  • the time-frequency resource information of the second cell specifically includes determining the available time-frequency resources of the second cell, the unavailable time-frequency resources, or the strength information of the interference of the time-frequency resources of the second cell. For example, when the second cell corresponding to the RB that is subject to interference is obtained according to the carrier frequency that generates the interference, the available time-frequency resources of the second cell, that is, the RBs that are not interfered, may be determined accordingly.
  • the multi-system controller may send time-frequency resource information of the second cell to the base station of the second cell for time-frequency resource scheduling of the second cell, that is, as shown in FIG. 7 according to another embodiment of the present invention.
  • the interference coordination device in the system of the system, the interference coordination device in the heterogeneous system illustrated in FIG. 4 may further include a sending module 701, where the sending module 701 is configured to send the time-frequency resource information of the second cell to the second The base station of the cell.
  • the time-frequency resource information of the second cell is used for the second cell to perform time-frequency resource scheduling, for example, may be avoiding the interfered RB or the reduced-order scheduling during scheduling.
  • the sending module 701 sends the time-frequency resource information of the second cell
  • the time-frequency resource of the second cell and the received strength information of the second cell may be sent to the base station of the second cell, where the strength information of the received interference may be
  • the quantitative information obtained by the above formula can also be calculated according to the above formula, and the qualitative information obtained according to the comparison with the threshold value, for example, strong interference, sub-strong interference, and the like.
  • the second cell is in the resource blocks numbered RB4, RB5, and RB29 and the corresponding time slot.
  • the SFN0 to SFN40 are subjected to strong interference
  • the second cell is subjected to the second strong interference on the resource blocks numbered RB30, RB14, and RB46 and the corresponding time slots SFN12 to SFN54
  • the transmission module 701 in the multi-system controller may be ⁇ SFN0.
  • -SFN40, RB4, RB5, RB29, strong interference ⁇ and ⁇ SFN 12 ⁇ SFN54, RB30, RB14, RB46, secondary strong interference ⁇ transmit the time-frequency resource information of the second cell to the base station of the second cell.
  • the time-frequency resource information of the second cell is used for time-frequency resource scheduling in the second cell, and the time-frequency resource information of the second cell is specifically used to indicate that the second cell uses the second cell.
  • the second carrier of the second cell is configured by using a carrier, and the second carrier includes a time-frequency resource shared by the first cell and the second cell.
  • the embodiment of the present invention further provides a multi-system controller or a base station, for example, a base station adopting an LTE system, where the multi-system controller or base station includes a memory, and one or more programs, where one or more programs are stored in The memory, and configured to execute, by the one or more processors, the one or more programs include instructions for: acquiring time-frequency resource information of the first cell and the first cell and the second The interference relationship information of the cell, the interference relationship information of the first cell and the second cell is used to determine interference of the first cell to the second cell at a time frequency, the first cell and the The second cell has a different system; the time-frequency resource information of the second cell is determined according to the time-frequency resource information of the first cell and the interference relationship information, and the time-frequency resource information of the second cell is used for The second cell performs time-frequency resource scheduling.
  • the memory of the multi-system controller or the base station is further included for An instruction to: receive time-frequency resource information of the first cell sent by a base station of the first cell.
  • the memory of the multi-system controller or the base station is further included for An instruction to: receive the interference relationship information sent by a base station of the second cell.
  • the time-frequency resource information of the first cell includes at least carrier frequency information of the first cell, where Any one of power information of the carrier frequency, information of the time slot, and power information on the time slot.
  • the interference relationship information of the first cell and the second cell includes at least the first cell The interference information of the second cell is described.
  • the memory of the multi-system controller or the base station further includes an instruction for performing the following operations: Determining the strength information of the available time-frequency resources, the unavailable time-frequency resources of the second cell, or the time-frequency resources of the second cell.
  • the time-frequency resource information of the second cell is specifically used to indicate the second
  • the cell uses the first carrier of the second cell to perform the cross-carrier scheduling of the second carrier of the second cell, where the second carrier includes a time-frequency resource shared by the first cell and the second cell.
  • the memory of the multi-system controller or the base station further includes an instruction for: performing the second cell: The time-frequency resource information is sent to the base station of the second cell.
  • Still another embodiment of the present invention provides a computer readable storage medium, which may be a computer readable storage medium included in the memory in the above embodiment; There is a computer readable storage medium that is not assembled into the terminal.
  • the computer readable storage medium stores one or more programs, the one or more programs being used by one or more processors to perform an interference coordination method in a heterogeneous system, the method comprising:
  • the acquiring time-frequency resource information of the first cell includes: receiving Time-frequency resource information of the first cell sent by the base station of the first cell.
  • the relationship information includes: receiving the interference relationship information sent by the base station of the second cell.
  • the time-frequency resource information of the first cell includes at least carrier frequency information of the first cell, Any one of power information of the carrier frequency, information of the time slot, and power information on the time slot.
  • the interference relationship information of the first cell and the second cell includes at least the first cell Interference information for the second cell.
  • the determining, according to the time-frequency resource information of the first cell and the interference relationship information, The time-frequency resource information of the second cell includes: determining the available time-frequency resources of the second cell, the unavailable time-frequency resources, or the strength information of the interference of the time-frequency resources of the second cell.
  • the time-frequency resource information of the second cell is specifically used to indicate that the second cell uses the second cell.
  • the second carrier of the second cell is configured by using a carrier, and the second carrier includes a time-frequency resource shared by the first cell and the second cell.
  • the method further includes: using the time-frequency resource of the second cell Information is sent to the base station of the second cell.
  • the storage medium may include: a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

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Abstract

本发明实施例提供一种异制式系统下的干扰协调方法、装置和设备,以消除同频干扰的同时提高无线频谱资源的利用效率。所述方法包括:获取第一小区的时频资源信息以及所述第一小区与所述第二小区的干扰关系信息,所述第一小区与所述第二小区的干扰关系信息用于确定所述第一小区在时频上对所述第二小区的干扰,所述第一小区与所述第二小区具有不同制式;根据所述第一小区的时频资源信息和所述干扰关系信息,确定所述第二小区的时频资源信息,所述第二小区的时频资源信息用于第二小区进行时频资源调度。本发明实施例提供的方法可以消除同频GSM系统对LTE系统的干扰,提高无线频谱资源的利用效率,并且能够通过频谱重整实现LTE快速部署的目的。

Description

一种异制式系统下的干扰协调方法、 装置和设备 技术领域
本发明涉及通信领域, 尤其涉及一种异制式系统下的干扰协调方法、装置 和设备。
背景技术
随着数据业务的迅猛发展, 用户对无线频谱资源的需求不断增长, 无线频 谱资源的有限性日趋严重, 无线频谱资源的稀缺性变得日益明显。 因此, 如何 合理地合理规划和有效使用无线频谱资源成为一个至关重要的问题。
根据 3GPP标准对无线电通信频段的定义, 900MHz和 1800MHz频段目前主 要用于 GSM网络。 随着 3G业务的逐步普及和用户的迁移, 3G业务主要承载在 2.1GHz频段, 原来的 GSM900和 GSM1800同时承载语音的网络负荷逐渐减轻。 因此, GSM900和 GSM1800可以逐步将频谱重整出来, 以用于更先进且频谱效 率更高的 UMTS/LTE网络。 频谱重整(Spectrum Refarming )是保持网络竟争 力、 降低投资以及快速部署 LTE网络的较佳选择, 然而由于 GSM用户的渗透率 在 LTE的发展过程中很长一段时间内维持较高,并且 GSM用户的容量需求变化 呈一个逐渐变化的趋势,频谱重整涉及较大的网络动作,例如必要的重新规划、 小区重启等, 导致频繁的频谱重整代价^ ί艮高, 如此, 在一定的时间范围内, GSM网络和 UMTS/LTE网络( GU/GL)之间的动态频谱共享作为频谱重整之前 的过渡过程, 具有很好的价值。 然而, 频语共享这一解决方案存在一个关键问 题, 即, 频谱共享情形下如何解决 GSM网络和 UMTS/LTE网络之间的同频 /邻 频干扰。 为了说明问题, 以下先以 GSM和 LTE网络共享频谱为例, 说明频谱共 享情形下 GSM网络和 UMTS/LTE网络之间的同频 /邻频干扰。
GSM频点之间间隔为 200kHz, —个频点上每个时分多址(Time Division Multiple Access, TDMA )帧包含 8个时隙(分别为 TSO, TSl , TS7 ) , 每 个时隙长度为 0.557ms。当 GSM网络占用大于 1个频点时,假设频点为 C。,C CN, 则频点 CQ的 TSO主要用于广播信道和公共控制信道, CQ的 TS1主要用于专 用控制信道, 频点 C。的 TS2〜TS7以及其他频点的 TS0〜TS7主要用于业务信道。 当 GSM网络仅占用 1个频点时, Co的 TS0主要用于广播、 公共控制和专用控制 信道, 剩余 TS1〜TS7用于业务信道。 当 LTE系统调度分配的粒度为物理资源块 ( Physical Resource Block, PRB )对, 在时域上占用 1ms, 在频域上占用 12个 子载波共计 180kHz。 GSM网络的基站发射功率很高, 一个载波(带宽 200kHz ) 的功率为 20W, 而 LTE网络的基站发射功率相对较低, 例如, 10MHz带宽发射 功率为 40W, 平均每个 RB ( 180kHz )发射功率为 0.8W/180kHz, 远远低于 GSM 网络的基站在单位赫兹上的发射功率。 因此, 当 LTE网络与 GSM网络共享频谱 部署时, GSM小区强功率发射信号将严重干扰 LTE小区信号。 这就说明, 如何 协调 GSM与 LTE小区之间的干扰,保证异系统共享频谱时系统的可靠性将是异 系统共存频谱的重大问题。
针对上述技术问题, 现有技术提供的一种解决方案是: 对于不同的网络, 分配不同的载频资源, 即使频谱共享场景下亦如此, 例如, 在频语共享的场景 下, 为 GSM网络分配的载频资源, 不分配给 LTE网络使用, 从而避免 GSM网 络对 LTE网络的干扰。
上述现有技术虽然一定程度上解决了同频 /邻频干扰问题, 但若仅仅根据
GSM是否使用该载频来决定 LTE能否使用该频段,这不仅违背了频语共享的初 衷, 而且严重约束了 GSM可使用资源的范围, 换言之, 现有技术在一定程度 上是以牺牲频语为代价来换取减少干扰, 无益于频谱共享使用效率的提高。 发明内容
本发明实施例提供一种异制式系统下的干扰协调方法、装置和设备, 以消 除同频干扰的同时提高无线频谱资源的利用效率。
本发明实施例第一方面提供一种异制式系统下的干扰协调方法,所述方法 包括:获取第一小区的时频资源信息以及所述第一小区与所述第二小区的干扰 关系信息,所述第一小区与所述第二小区的干扰关系信息用于确定所述第一小 区在时频上对所述第二小区的干扰,所述第一小区与所述第二小区具有不同制 式;
根据所述第一小区的时频资源信息和所述干扰关系信息,确定所述第二小 区的时频资源信息,所述第二小区的时频资源信息用于第二小区进行时频资源 调度。
基于第一方面,在第一方面的第一种可能实现方式中, 所述获取所述第一 小区的时频资源信息包括:接收所述第一小区的基站发送的所述第一小区的时 频资源信息。
基于第一方面,在第一方面的第二种可能实现方式中, 所述获取所述第一 小区与所述第二小区的干扰关系信息包括:
接收所述第二小区的基站发送的所述干扰关系信息。
基于第一方面至第一方面的第二种可能实现方式的任意一种,在第一方面 的第三种可能实现方式中,所述第一小区的时频资源信息至少包括第一小区的 载频信息、所述载频的功率信息、 时隙的信息和所述时隙上的功率信息中的任 意一种。
基于第一方面至第一方面的第二种可能实现方式的任意一种,在第一方面 的第四种可能实现方式中,所述第一小区与所述第二小区的干扰关系信息至少 包括所述第一小区对所述第二小区的干扰信息。
基于第一方面至第一方面的第二种可能实现方式的任意一种,在第一方面 的第五种可能实现方式中,所述根据所述第一小区的时频资源信息和所述干扰 关系信息, 确定所述第二小区的时频资源信息, 包括:
确定所述第二小区的可用时频资源、不可用时频资源或者所述第二小区的 时频资源所受干扰的强度信息。
基于第一方面,在第一方面的第六种可能实现方式中, 所述第二小区的时 频资源信息具体用于指示所述第二小区使用所述第二小区的第一载波进行跨 载波调度所述第二小区的第二载波, 其中, 所述第二载波包括所述第一小区和 所述第二小区共享的时频资源。
基于第一方面, 在第一方面的第七种可能实现方式中, 所述方法还包括: 将所述第二小区的时频资源信息发送至所述第二小区的基站。
本发明实施例的第二方面,提供异制式系统下的干扰协调装置, 所述装置 包括: 获取模块, 用于获取第一小区的时频资源信息以及所述第一小区与所述 第二小区的干扰关系信息,所述第一小区与所述第二小区的干扰关系信息用于 确定所述第一小区在时频上对所述第二小区的干扰,所述第一小区与所述第二 小区具有不同制式;
确定模块, 用于根据所述第一小区的时频资源信息和所述干扰关系信息 , 确定所述第二小区的时频资源信息,所述第二小区的时频资源信息用于第二小 区进行时频资源调度。
基于第二方面,在第二方面的第一种可能实现方式中,所述获取模块包括: 第一接收单元,用于接收所述第一小区的基站发送的所述第一小区的时频 资源信息。
基于第二方面,在第二方面的第二种可能实现方式中,所述获取模块包括: 第二接收单元, 用于接收所述第二小区的基站发送的所述干扰关系信息。 基于第二方面至第二方面的第二种可能实现方式中,在第二方面的第三种 可能实现方式中, 所述第一小区的时频资源信息至少包括第一小区的载频信 息、所述载频的功率信息、时隙的信息和所述时隙上的功率信息中的任意一种。
基于第二方面至第二方面的第二种可能实现方式中,在第二方面的第四种 可能实现方式中,
所述第一小区与所述第二小区的干扰关系信息至少包括所述第一小区对 所述第二小区的干扰信息。
基于第二方面至第二方面的第二种可能实现方式中,在第二方面的第五种 可能实现方式中,所述第一确定模块具体用于确定确定所述第二小区的可用时 频资源、 不可用时频资源或者所述第二小区的时频资源所受干扰的强度信息。
基于第二方面,在第二方面的第六种可能实现方式中, 所述第二小区的时 频资源信息具体用于指示所述第二小区使用所述第二小区的第一载波进行跨 载波调度所述第二小区的第二载波, 其中, 所述第二载波包括所述第一小区和 所述第二小区共享的时频资源。
基于第二方面, 在第二方面的第七种可能实现方式中, 所述装置还包括: 发送模块,用于将所述第二小区的时频资源信息发送至所述第二小区的基 站。
从上述本发明实施例可知,由于第二小区的基站根据第一小区的时频资源 信息和第一小区与所述第二小区的干扰关系信息,确定用于用于第二小区进行 时频资源调度的第二小区的时频资源信息。 因此, 与现有技术提供的对于不同 的网络, 分配不同的载频资源方法相比, 本发明实施例提供的方法可以消除同 频 GSM系统对 LTE系统的干扰, 提高无线频谱资源的利用效率, 并且能够通过 频谱重整实现 LTE快速部署的目的。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对现有技术或实施例 描述中所需要使用的附图作简单地介绍,显而易见地, 下面描述中的附图仅仅 是本发明的一些实施例,对于本领域技术人员来讲,还可以如这些附图获得其 他的附图。
图 1是本发明实施例提供的异制式系统下的干扰协调方法流程示意图; 图 2是本发明实施例提供的 LTE制式的第二小区和 GSM制式的第一小区的 网络规划示意图;
图 3是本发明实施例提供的第二小区中各个小区占用载波的情况示意图; 图 4是本发明实施例提供的异制式系统下的干扰协调装置结构示意图; 图 5是本发明另一实施例提供的异制式系统下的干扰协调装置结构示意 图;
图 6是本发明另一实施例提供的异制式系统下的干扰协调装置结构示意 图;
图 7是本发明另一实施例提供的异制式系统下的干扰协调装置结构示意 图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域技术人员所获得的所有其他实 施例, 都属于本发明保护的范围。
请参阅附图 1 , 是本发明实施例提供的异制式系统下的干扰协调方法流程 示意图, 其执行主体可以是联合管理两种不同制式小区网络业务的中央节点, 例如, 联合管理 GSM和 LTE网络业务的多系统控制器, 也可以是两种不同制式 小区中的其中一种基站设备, 例如, 采用 LTE制式的小区的基站设备。 附图 1 示例的方法主要包括步骤 S 101和步骤 S 102 , 详细说明如下:
S101 ,获取第一小区的时频资源信息以及所述第一小区与所述第二小区的 干扰关系信息,所述第一小区与所述第二小区的干扰关系信息用于确定所述第 一小区在时频上对所述第二小区的干扰,所述第一小区与所述第二小区具有不 同制式。
在本发明实施例中, 第一小区可以是采用 GSM制式的小区, 第二小区可 以是采用 LTE制式的小区。 作为获取第一小区的时频资源信息的一个实施例, 可以被动获取第一小区的时频资源信息,即多系统控制器接收所述第一小区的 基站发送的所述第一小区的时频资源信息,也可以是主动获取第一小区的时频 资源信息, 即, 多系统控制器向第一小区的基站发送用于请求上报第一小区的 视频资源信息的请求消息, 第一小区的基站接收到该请求消息后, 向所述多系 统控制器返回第一小区的时频资源信息。作为获取第一小区的时频资源信息的 另一实施例,也可以是第二小区的基站接收第一小区的基站发送的所述第一小 区的时频资源信息, 或者, 第二小区的基站向第一小区的基站发送用于请求上 报第一小区的视频资源信息的请求消息, 第一小区的基站接收到该请求消息 后, 向所述第二小区的基站返回第一小区的时频资源信息。
类似地,对于第一小区与第二小区的干扰关系信息的获取,也包括被动获 取和主动获取。 其中, 被动获取包括: 多系统控制器接收所述第二小区的基站 发送的第一小区与所述第二小区的干扰关系信息; 主动获取包括: 多系统控制 器向第二小区的基站发送用于请求上报第一小区与第二小区的干扰关系信息 的请求消息, 第二小区的基站接收到该请求消息后, 向所述多系统控制器返回 第一小区与所述第二小区的干扰关系信息。第一小区与第二小区的干扰关系信 息可以由初步确定干扰关系信息和精确确定干扰关系信息两步完成。对于初步 确定干扰关系信息, 可以是由网络规划数据或路测数据获得, 如附图 2所示, 是 LTE制式的第二小区和 GSM制式的第一小区的网络规划图。 覆盖区域 1为第 二小区 (即 LTE制式的小区) 中的小区 1与第一小区 (即 GSM制式的小区) 中 的小区 1的覆盖区, 其他数字表示为第二小区和第一小区的覆盖区。 第二小区 除了受同频第二小区干扰,还受到同频第一小区不同强度的干扰。产生强干扰 的第一小区有编号为 {1 }的第一小区, 测量的信号强度为 [-30dBm, -70dBm] , 产生次强干扰的第一小区有编号为 {4, 7, 10, 13 , 16, 19, 22}的第一小区, 测量的信号强度为 [-85dBm, -95dBm] ,产生的弱干扰的第一小区有编号为 { 27, 34, 37 , 40, 43 , 46, 47 } , 测量的信号强度为 [-lOOdBm, -110dBm]。 也可以 基于地理位置信息初步确定第一小区与第二小区的干扰关系信息, 具体地, 仍 然以附图 2为例, 多系统控制器根据网络规划数据获取第二小区和各个第一小 区的地理位置信息, 例如, 第一小区中的小区 1和第二小区中的小区 1的地理位 置相同, 则认为第一小区中的小区 1为第二小区的强干扰源小区, 第一小区中 编号为 4, 7, 10, 13 , 16, 19, 22的小区和第二小区的距离相同或相近例如为 500m, 则认为第一' J、区中编号为 4, 7 , 10, 13 , 16, 19, 22的小区为第二小 区的次强干扰源小区, 而第一小区中编号为 27, 34, 37, 40, 43 , 46, 47的小 区和第二小区的距离相同或相近例如为 1000m , 则认为第一' 区中编号为 27 , 34, 37 , 40, 43 , 46, 47的小区为第二小区的弱干扰源小区。 上述强干扰、 次 强干扰或弱干扰的定性分析结果可以作为第一小区对第二小区的干扰信息。
需要说明的是,上述初步确定第一小区与第二小区的干扰关系信息也可以 是第二小区通过终端测量(可能是异系统异频测量,也可能是异系统同频测量, 具体看第一小区和第二小区使用的频点是否相同)获取, 第二小区的基站再将 这些获取的第一小区与第二小区的干扰关系信息发送给多系统控制器,从而多 系统控制器获得第二小区感受到的来自第一小区的干扰关系。例如, 第二小区 终端测量获得第二小区中的小区 1除了受同频第二小区干扰, 还受到同频第一 小区不同强度的干扰, 产生强干扰的第一小区有编号为 {1 }的第一小区, 测量 的信号强度为 [-30dBm, -70dBm] , 产生次强干扰的第一小区有编号为 {4, 7, 10, 13 , 16, 19, 22}的第一' 区, 测量的信号强度为 [-85dBm, -95dBm] , 产 生的弱干扰的第一小区有编号为 { 27, 34, 37, 40, 43 , 46, 47 } , 测量的信 号强度为 [-lOOdBm, -110dBm]。
S102,根据所述第一小区的时频资源信息和所述干扰关系信息,确定所述 第二小区的时频资源信息,所述第二小区的时频资源信息用于第二小区进行时 频资源调度。
在本发明实施例中,第一小区的时频资源信息至少包括第一小区的载频信 息、所述载频的功率信息、时隙的信息和所述时隙上的功率信息中的任意一种。 例如, 根据 G-only用户业务的变化, 第一小区的基站会相应增加 /减少 GSM业 务载波, 或者调整载波功率大小, 第一小区的基站可以将第一小区的载频信息 和 /或所述载频的功率信息发送给第二小区的基站或者多系统控制器。 在因业 务变化导致第一小区的时隙分配信息以及所述时隙上的功率发生变化时,第一 小区的基站也可以将时隙的信息和所述时隙上的功率信息作为第一小区的时 频资源信息发送给第二小区的基站或者多系统控制器。
如前所述,第一小区与第二小区的干扰关系信息的获取包括初步确定这些 干扰关系信息和精确确定这些干扰关系信息。在初步确定了干扰关系信息, 例 如, 只考虑最强干扰源小区和次强干扰源小区, 或者只考虑测量的信号强度大 于一定门限的干扰源小区。 以只考虑最强干扰源小区和次强干扰源小区为例。 经过总结, 多系统控制器获得如图 3所示的第二小区中各个小区占用载波的情 况。
精确确定第一小区与第二小区的干扰关系信息,方法一是基于第一小区与 第二小区地理位置得到的路损系数, 结合第一小区的载频信息和 /或所述载频 的功率信息, 获得第一小区与第二小区的干扰关系信息。 具体地, 假设 GSM 小区 Ι,. , .,Ν和 LTE小区的距离分别为 dl , dN, 同时发射功率分别为 pi , N, 则 LTE在/ i上可能受到的干扰强度可以用以下公式表示:
I(fi) =∑Aj(fi)PjLj ( 1 ) 其中, 表示第一小区中编号为 _/的小区占用载频/ i的情况。 如果第一 小区 占用载频/ i, 则 4CQ = 1 ; 反之则 4CQ = 0。 ^则表示第一' J、区中编号为 到第二小区的路损, 该路损可以用两者之间的距离大致估算, 例如, = , 其中《是路损系数, 范围在 -2〜- 4之间。 根据上述描述, 如果只考虑第一小区中 编号为 1的小区即强干扰源小区和只考虑第一小区中编号为 4, 7, 10, 13 , 16, 19, 22的小区即次强干扰源小区, 第二小区在/ 1 , , /3和 /4上受到的干扰强度 分别为
I(fi) = Pi + p4L4 + pwLw + pnLn + pl6Ll6 + p22L22 I(fi) = Pi + p7L7 + p10L10 + pl9Ll9 d = P4L4 + ½ 1。 + Pli i + Pl9Ll9 + ½ 22
ΪΛ) = Pik + pl6Ll6 + pl9Ll9。 按照上述举例方法, 最终可以确定第二小区在各个载波上受到的干扰强 度。
精确确定第一小区与第二小区的干扰关系信息,方法二是基于第一小区与 第二小区地理位置得到的路损系数, 结合第一小区的载频信息和 /或所述载频 的功率信息,给不同干扰强度的干扰源小区设置加权系数。 当只考虑强干扰源 和次强干扰源小区时, 给强干扰源和次强干扰源以不同的权重。 例如, 第一小 区中编号为 1的小区的加权系数为 0.3 , 第一小区中编号为 4, 7, 10, 13 , 16, 19和 22的加权系数分别为 0.1 (当然根据实际情况, 系数可以不同), 则第二小 区在/ i上可能受到的干扰强度可以用以下公式表示:
Figure imgf000011_0001
其中, /;为08^1小区 j的加权系数, 最终可以确定第二小区在各个载波上 受到的干扰强度。
上述方法一和方法二中,当只收到第一小区的载频信息时,可以将公式( 1 ) 和公式(2 )进行简化:
Figure imgf000011_0002
精确确 第一小区与第二小区的干扰关系 方法三是基于第一小区与 第二小区地理位置得到的路损系数, 结合第一小区的时隙的信息和 /或所述时 隙上的功率信息, 以下述公式(3 )计算第二小区在时频资源 (特定载频, 特 定时隙)上受到来自第一小区的干扰强度:
I{fi,slotk) = jA]{fi,k)p]{i,k)L] (3) 其中, /( ,^ ¾)表示第二小区在载频/ i时隙/ LL受到的来自第一小区的干扰 强度。 ( )为小区·在载频 时隙 上的发射功率, 4< W = 1则表示小区·占用 载频时隙 k, 反之则表示未占用。
当获取的第一小区的时频资源为第一小区的载频信息、所述载频的功率信 息和时隙的信息, 且干扰关系信息为根据终端测量获得的接收信号强度信息 时, 可以下述公式(4)计算第二小区在时频资源 (特定载频, 特定时隙)上 受到来自第一小区的干扰强度。 Ii slot,) = jAj{fi,k)Pj{i,k)lj ( 4 ) 当获取的第一小区的时频资源信息为时隙的信息以及发射功率信息,且干 扰关系信息为根据地理位置信息获得的路损信息时, 可以下述公式(5)计算 第二小区在时频资源 (特定时隙)上受到来自第一小区的干扰强度。
I(slotk) = fjCj(k)pj(k)Lj (5) 其中, C() = l表示小区 占用时隙 ^ 反之则表示小区 不占用时隙 。 其中 ^ t)为第一小区中编号为 的小区在时隙 上的发射功率,即默认第一小 区 j在所有载频上的发射功率相同。
当获取的第一小区的时频资源为时隙的信息以及发射功率信息,且干扰关 系信息为根据终端测量获得的接收信号强度信息时, 也可以下述公式(6)计 算第二小区在时频资源 (特定时隙)上受到来自第一小区的干扰强度:
I{slotk) = jCj{k)Pj{k)lj (6) 当获取的第一小区的时频资源为时隙的信息, 且干扰关系信息为根据地理 位置信息获得的路损信息时,可以下述公式 ( 7 )计算第二小区在时频资源 (特 定时隙)上受到来自第一小区的干扰强度: = ¾ C ( 7 ) 当获取的第一小区的时频资源为时隙的信息,且干扰关系信息为根据地 UE 测量获得的接收信号强度信息时, 可以下述公式(8 )计算第二小区在时频资 源 (特定时隙)上受到来自第一小区的干扰强度。 i{siotk ) = icj{k lj ( 8 )
当根据上k方法将干扰关系信息计算出来后,由于第一小区的载频与第二 小区的资源块( Resource Block, RB )有一定的对应关系, 因此, 多系统控制 器可以据此确定第二小区的时频资源信息,具体包括确定所述第二小区的可用 时频资源、 不可用时频资源或者所述第二小区的时频资源所受干扰的强度信 息。 例如, 当根据产生干扰的载频获得第二小区对应会受到干扰的 RB时, 可 以据此确定第二小区的可用时频资源即不会受到干扰的 RB。 多系统控制器可 以将第二小区的时频资源信息发送至第二小区的基站,以用于第二小区进行时 频资源调度。 例如, 调度时避开受到干扰的 RB或者减阶调度。 发送第二小区 的时频资源信息时,可以是将第二小区的时频资源及其所受干扰的强度信息发 送给第二小区的基站, 其中, 所受干扰的强度信息可以是根据上述公式计算获 得的定量信息,也可以根据上述公式计算出一个定量信息后,根据与阈值的比 较得到的定性信息, 例如, 强干扰, 次强干扰等等。 作为上述实施例对应的一 个实施例,假设第二小区在编号为 RB4、 RB5和 RB29的资源块以及对应的时隙 SFN0〜SFN40上受到强干扰, 以及第二小区在编号为 RB30、 RB14和 RB46资源 块以及对应的时隙 SFN12〜SFN54上受到次强干扰, 则多系统控制器可以以 {SFN0-SFN40, RB4、 RB5、 RB29,强干扰 }以及 { SFN12〜SFN54, RB30、 RB14、 RB46, 次强干扰}的形式将第二小区的时频资源信息发送给第二小区的基站。
特别地, 对于第二小区的时频资源信息用于第二小区进行时频资源调度, 可以是第二小区的时频资源信息具体用于指示所述第二小区使用所述第二小 区的第一载波进行跨载波调度所述第二小区的第二载波, 其中, 所述第二载波 包括所述第一小区和所述第二小区共享的时频资源。 现有技术未考虑到 GSM频谱本身是在各邻区中按一定的复用距离复用 的, 而复用本身造成了某个载频在不同小区使用对 LTE的干扰是差异巨大的。 从上述本发明实施例提供的异制式系统下的干扰协调方法可知,由于第二小区 的基站根据第一小区的时频资源信息和第一小区与所述第二小区的干扰关系 信息, 确定用于用于第二小区进行时频资源调度的第二小区的时频资源信息。 因此, 与现有技术提供的对于不同的网络, 分配不同的载频资源方法相比, 本 发明实施例提供的方法可以消除同频 GSM系统对 LTE系统的干扰,提高无线频 谱资源的利用效率, 并且能够通过频谱重整实现 LTE快速部署的目的。
请参阅附图 4, 是本发明实施例提供的异制式系统下的干扰协调装置结构 示意图。 为了便于说明, 仅仅示出了与本发明实施例相关的部分。 附图 4示例 的异制式系统下的干扰协调装置可以是多系统控制器或者是 LTE制式的小区 的网络侧设备, 例如, 基站等, 也可以是上述多系统控制器或基站中的功能模 块, 其包括获取模块 401和确定模块 402, 其中:
获取模块 401, 用于获取第一小区的时频资源信息以及所述第一小区与所 述第二小区的干扰关系信息,所述第一小区与所述第二小区的干扰关系信息用 于确定所述第一小区在时频上对所述第二小区的干扰,所述第一小区与所述第 二小区具有不同制式;
确定模块 402, 用于根据所述第一小区的时频资源信息和所述干扰关系信 息,确定所述第二小区的时频资源信息, 所述第二小区的时频资源信息用于第 二小区进行时频资源调度。
需要说明的是, 以上附图 4示例的异制式系统下的干扰协调装置的实施方 式中, 各功能模块的划分仅是举例说明, 实际应用中可以根据需要, 例如相应 硬件的配置要求或者软件的实现的便利考虑,而将上述功能分配由不同的功能 模块完成,即将所述异制式系统下的干扰协调装置的内部结构划分成不同的功 能模块, 以完成以上描述的全部或者部分功能。 而且, 实际应用中, 本实施例 中的相应的功能模块可以是由相应的硬件实现,也可以由相应的硬件执行相应 的软件完成, 例如, 前述的获取模块, 可以是具有执行前述获取第一小区的时 频资源信息以及所述第一小区与所述第二小区的干扰关系信息的硬件,例如获 取器,也可以是能够执行相应计算机程序从而完成前述功能的一般处理器或者 其他硬件设备; 再如前述的确定模块, 可以是具有执行前述根据所述第一小区 的时频资源信息和所述干扰关系信息,确定所述第二小区的时频资源信息功能 的硬件, 例如确定器,也可以是能够执行相应计算机程序从而完成前述功能的 一般处理器或者其他硬件设备(本说明书提供的各个实施例都可应用上述描述 原则)。
在附图 4示例的异制式系统下的干扰协调装置中, 第一小区可以是采用 GSM制式的小区, 第二小区可以是采用 LTE制式的小区。 作为获取第一小区的 时频资源信息的一个实施例, 可以被动获取第一小区的时频资源信息。 即附图 4示例的获取模块 401还可以包括第一接收单元 501 ,如附图 5所示本发明另一实 施例提供的异制式系统下的干扰协调装置。 第一接收单元 501接收所述第一小 区的基站发送的所述第一小区的时频资源信息。 获取模块 401也可以是主动获 取第一小区的时频资源信息, 即, 多系统控制器向第一小区的基站发送用于请 求上报第一小区的视频资源信息的请求消息,第一小区的基站接收到该请求消 息后, 向所述多系统控制器返回第一小区的时频资源信息。作为获取第一小区 的时频资源信息的另一实施例, 也可以是第二小区即 LTE制式的小区的基站接 收第一小区的基站发送的所述第一小区的时频资源信息, 或者, 第二小区的基 站向第一小区的基站发送用于请求上报第一小区的视频资源信息的请求消息, 第一小区的基站接收到该请求消息后,向所述第二小区的基站返回第一小区的 时频资源信息。
类似地,对于第一小区与第二小区的干扰关系信息的获取,也包括被动获 取和主动获取, 即附图 4示例的获取模块 401还可以包括第二接收单元 601 , 如 附图 6所示本发明另一实施例提供的异制式系统下的干扰协调装置。 第二接收 单元 601接收第二小区的基站发送的第一小区与所述第二小区的干扰关系信 息; 主动获取包括: 多系统控制器向第二小区的基站发送用于请求上报第一小 区与第二小区的干扰关系信息的请求消息,第二小区的基站接收到该请求消息 后, 向所述多系统控制器返回第一小区与所述第二小区的干扰关系信息。
在上述附图 4至附图 6示例的异制式系统下的干扰协调装置中,第一小区与 第二小区的干扰关系信息可以由获取模块 401初步确定干扰关系信息和精确确 定干扰关系信息两步完成。对于初步确定干扰关系信息,可以是由获取模块 401 通过网络规划数据或路测数据获得, 如附图 2所示, 是 LTE制式的第二小区和 GSM制式的第一小区的网络规划图。 覆盖区域 1为第二小区 (即 LTE制式的小 区) 中的小区 1与第一小区 (即 GSM制式的小区) 中的小区 1的覆盖区, 其他 数字表示为第二小区和第一小区的覆盖区。 第二小区除了受同频第二小区干 扰,还受到同频第一小区不同强度的干扰。产生强干扰的第一小区有编号为 {1 } 的第一小区, 测量的信号强度为 [-30dBm, -70dBm] , 产生次强干扰的第一小 区有编号为 {4, 7 , 10, 13 , 16, 19, 22}的第一小区,测量的信号强度为 [-85dBm, -95dBm] , 产生的弱干扰的第一小区有编号为 { 27, 34, 37, 40, 43 , 46, 47 } , 测量的信号强度为 [-lOOdBm, -110dBm]。 也可以基于地理位置信息初步确定 第一小区与第二小区的干扰关系信息, 具体地, 仍然以附图 2为例, 获取模块 401根据网络规划数据获取第二小区和各个第一小区的地理位置信息, 例如, 第一小区中的小区 1和第二小区中的小区 1的地理位置相同,则认为第一小区中 的小区 1为第二小区的强干扰源小区, 第一小区中编号为 4, 7, 10, 13 , 16, 19, 22的小区和第二小区的距离相同或相近例如为 500m, 则认为第一' 区中 编号为 4, 7, 10, 13 , 16, 19, 22的小区为第二小区的次强干扰源小区, 而第 一小区中编号为 27, 34, 37, 40, 43 , 46, 47的小区和第二小区的距离相同或 相近例如为 1000m, 则认为第一小区中编号为 27, 34, 37, 40, 43 , 46, 47的 小区为第二小区的弱干扰源小区。上述强干扰、 次强干扰或弱干扰的定性分析 结果可以作为第一小区对第二小区的干扰信息。
需要说明的是,上述初步确定第一小区与第二小区的干扰关系信息也可以 是第二小区通过终端测量(可能是异系统异频测量,也可能是异系统同频测量, 具体看第一小区和第二小区使用的频点是否相同)获取, 第二小区的基站再将 这些获取的第一小区与第二小区的干扰关系信息发送给多系统控制器,从而多 系统控制器获得第二小区感受到的来自第一小区的干扰关系。例如, 第二小区 终端测量获得第二小区中的小区 1除了受同频第二小区干扰, 还受到同频第一 小区不同强度的干扰, 产生强干扰的第一小区有编号为 {1 }的第一小区, 测量 的信号强度为 [-30dBm, -70dBm], 产生次强干扰的第一小区有编号为 {4, 7, 10, 13 , 16, 19, 22}的第一' 区, 测量的信号强度为 [-85dBm, -95dBm] , 产 生的弱干扰的第一小区有编号为 { 27, 34, 37, 40, 43 , 46, 47 } , 测量的信 号强度为 [-lOOdBm, -110dBm]。
在上述附图 4至附图 6示例的异制式系统下的干扰协调装置中,第一小区的 时频资源信息至少包括第一小区的载频信息、所述载频的功率信息、 时隙的信 息和所述时隙上的功率信息中的任意一种。例如,根据 G-only用户业务的变化, 第一小区的基站会相应增加 /减少 GSM业务载波, 或者调整载波功率大小, 第 一小区的基站可以将第一小区的载频信息和 /或所述载频的功率信息发送给第 二小区的基站或者多系统控制器。在因业务变化导致第一小区的时隙分配信息 以及所述时隙上的功率发生变化时,第一小区的基站也可以将时隙的信息和所 述时隙上的功率信息作为第一小区的时频资源信息发送给第二小区的基站或 者多系统控制器。
如前所述,第一小区与第二小区的干扰关系信息的获取包括初步确定这些 干扰关系信息和精确确定这些干扰关系信息。在初步确定了干扰关系信息, 例 如, 只考虑最强干扰源小区和次强干扰源小区, 或者只考虑测量的信号强度大 于一定门限的干扰源小区。 以只考虑最强干扰源小区和次强干扰源小区为例。 经过总结, 多系统控制器获得如图 3所示的第二小区中各个小区占用载波的情 况。
确定模块 402精确确定第一小区与第二小区的干扰关系信息, 方法一 于第一小区与第二小区地理位置得到的路损系数,结合第一小区的载频信息和 /或所述载频的功率信息, 获得第一小区与第二小区的干扰关系信息。 具体地, 4叚设 GSM小区 Ι,. , .,Ν和 LTE小区的距离分别为 dl , dN, 同时发射功率分别 为 pi , ... , pN, 则 LTE在/ i上可能受到的干扰强度可以用以下公式表示: l(fi) =∑Aj(fi)PjLj ( 1 ) 其中, 表示第一小区中编号为 _/的小区占用载频/ i的情况。 如果第一 小区 占用载频/ i, 则 4CQ = 1 ; 反之则 4CQ = 0。 ^则表示第一' J、区中编号为 到第二小区的路损, 该路损可以用两者之间的距离大致估算, 例如, Lj = d 其中《是路损系数, 范围在 -2〜- 4之间。 根据上述描述, 如果只考虑第一小区中 编号为 1的小区即强干扰源小区和只考虑第一小区中编号为 4, 7, 10, 13 , 16, 19, 22的小区即次强干扰源小区, 第二小区在/ 1 , , /3和 /4上受到的干扰强度 分别为
I(fi) = Pi + p4L4 + pwLw + pnLn + pl6Ll6 + p22L22
I(fi) = Pi + p7L7 + p10L10 + pl9Ll9 /A) = Pik + pl6Ll6 + pl9Ll9。 按照上述举例方法, 最终可以确定第二小区在各个载波上受到的干扰强 度。
确定模块 402精确确定第一小区与第二小区的干扰关系信息, 方法二 于第一小区与第二小区地理位置得到的路损系数,结合第一小区的载频信息和 /或所述载频的功率信息, 给不同干扰强度的干扰源小区设置加权系数。 当只 考虑强干扰源和次强干扰源小区时, 给强干扰源和次强干扰源以不同的权重。 例如, 第一小区中编号为 1的小区的加权系数为 0.3 , 第一小区中编号为 4, 7, 10, 13 , 16, 19和 22的加权系数分别为 0.1 (当然根据实际情况, 系数可以不 同), 则第二小区^ /i上可能受到的干扰强度可以用以下公式表示:
I(fi) = JAj{fi)pj j ( 2 ) 其中, /^为 GSM小区 j的加权系数, 最终可以确定第二小区在各个载波上 受到的干扰强度。
上述方法一和方法二中,当只收到第一小区的载频信息时,可以将公式( 1 ) 和公式(2 )进行简化:
I(fi) =∑Aj(fi)PjLj > I(fi) =∑Aj(fi)Lj Ι(/{) = JAj{fi)Pjlj > / = jAj{fi lj。 确定模块 402精确确定第一小区与第二小区的干扰关系信息, 方法三 于第一小区与第二小区地理位置得到的路损系数,结合第一小区的时隙的信息 和 /或所述时隙上的功率信息, 以下述公式(3)计算第二小区在时频资源(特 定载频, 特定时隙)上受到来自第一小区的干扰强度: /(^, slotk ) = , k)Pj (i, K)Lj ( 3 ) 其中, /( ,^ ¾)表示第二小区在载频/ i时隙/ LL受到的来自第一小区的干扰 强度。 ( )为小区·在载频 时隙 上的发射功率, 4< W = 1则表示小区·占用 载频时隙 k, 反之则表示未占用。
当获取的第一小区的时频资源为第一小区的载频信息、所述载频的功率信 息和时隙的信息, 且干扰关系信息为根据终端测量获得的接收信号强度信息 时, 确定模块 402可以下述公式(4)计算第二小区在时频资源(特定载频, 特 定时隙)上受到来自第一小区的干扰强度。
I{fi,slotk) = jAj{fi,k)Pj{i,k)lj (4) 当获取的第一小区的时频资源信息为时隙的信息以及发射功率信息,且干 扰关系信息为根据地理位置信息获得的路损信息时,确定模块 402可以下述公 式(5)计算第二小区在时频资源 (特定时隙)上受到来自第一小区的干扰强 度。
I(slotk) = fjCj(k)pj(k)Lj (5) 其中, c() = l表示小区 占用时隙 ^ 反之则表示小区 不占用时隙 。 其中 ^ t)为第一小区中编号为 的小区在时隙 上的发射功率,即默认第一小 区 j在所有载频上的发射功率相同。
当获取的第一小区的时频资源为时隙的信息以及发射功率信息,且干扰关 系信息为根据终端测量获得的接收信号强度信息时,确定模块 402也可以下述 公式(6)计算第二小区在时频资源 (特定时隙)上受到来自第一小区的干扰 强度: I{slotk) = jCj{k)Pj {k)lj ( 6 ) 当获取的第一小区的时频资源为时隙的信息,且干扰关系信息为根据地理 位置信息获得的路损信息时, 确定模块 402可以下述公式(7 )计算第二小区 在时频资源 (特定时隙)上受到来自第一小区的干扰强度: /( ) = fc . ( 7 ) 当获取的第一小区的时频资源为时隙的信息, 且干扰关系信息为根据地
UE测量获得的接收信号强度信息时, 确定模块 402可以下述公式 ( 8 )计算第 二小区在时频资源 (特定时隙)上受到来自第一小区的干扰强度。
i{siotk ) = jcj{k lj ( 8 )
当根据上k方法将干扰关系信息计算出来后,由于第一小区的载频与第二 小区的资源块( Resource Block, RB )有一定的对应关系, 因此, 多系统控制 器可以据此确定第二小区的时频资源信息,具体包括确定所述第二小区的可用 时频资源、 不可用时频资源或者所述第二小区的时频资源所受干扰的强度信 息。 例如, 当根据产生干扰的载频获得第二小区对应会受到干扰的 RB时, 可 以据此确定第二小区的可用时频资源即不会受到干扰的 RB。 多系统控制器可 以将第二小区的时频资源信息发送至第二小区的基站以用于第二小区进行时 频资源调度, 即, 如附图 7所示本发明另一实施例提供的异制式系统下的干扰 协调装置, 附图 4示例的异制式系统下的干扰协调装置还可以包括发送模块 701 ,发送模块 701用于将所述第二小区的时频资源信息发送至所述第二小区的 基站。第二小区的时频资源信息用于第二小区进行时频资源调度例如可以是调 度时避开受到干扰的 RB或者减阶调度。发送模块 701发送第二小区的时频资源 信息时,可以是将第二小区的时频资源及其所受干扰的强度信息发送给第二小 区的基站, 其中, 所受干扰的强度信息可以是根据上述公式计算获得的定量信 息,也可以根据上述公式计算出一个定量信息后,根据与阈值的比较得到的定 性信息, 例如, 强干扰, 次强干扰等等。 作为上述实施例对应的一个实施例, 假设第二小区在编号为 RB4、 RB5和 RB29的资源块以及对应的时隙 SFN0〜SFN40上受到强干扰, 以及第二小区在编号为 RB30、 RB14和 RB46资源 块以及对应的时隙 SFN12〜SFN54上受到次强干扰, 则多系统控制器中的发送 模块 701可以以 { SFN0-SFN40 , RB4、 RB5、 RB29 ,强干扰 }以及 { SFN 12〜SFN54 , RB30、 RB14、 RB46, 次强干扰}的形式将第二小区的时频资源信息发送给第 二小区的基站。
特别地, 对于第二小区的时频资源信息用于第二小区进行时频资源调度, 可以是第二小区的时频资源信息具体用于指示所述第二小区使用所述第二小 区的第一载波进行跨载波调度所述第二小区的第二载波, 其中, 所述第二载波 包括所述第一小区和所述第二小区共享的时频资源。
本发明实施例还提供一种多系统控制器或者基站, 例如, 采用 LTE制式的 基站,该多系统控制器或者基站包括有存储器,以及一个或者一个以上的程序, 其中一个或者一个以上程序存储于存储器中,且经配置以由一个或者一个以上 处理器执行述一个或者一个以上程序包含用于进行以下操作的指令:获取第一 小区的时频资源信息以及所述第一小区与所述第二小区的干扰关系信息,所述 第一小区与所述第二小区的干扰关系信息用于确定所述第一小区在时频上对 所述第二小区的干扰, 所述第一小区与所述第二小区具有不同制式; 根据所述 第一小区的时频资源信息和所述干扰关系信息,确定所述第二小区的时频资源 信息, 所述第二小区的时频资源信息用于第二小区进行时频资源调度。
假设上述为第一种可能的实施方式,则在第一种可能的实施方式作为基础 而提供的第二种可能的实施方式中, 所述多系统控制器或者基站的存储器中, 还包含用于执行以下操作的指令:接收所述第一小区的基站发送的所述第一小 区的时频资源信息。
假设上述为第一种可能的实施方式,则在第一种可能的实施方式作为基础 而提供的第三种可能的实施方式中, 所述多系统控制器或者基站的存储器中, 还包含用于执行以下操作的指令:接收所述第二小区的基站发送的所述干扰关 系信息。
在第一、第二或者第三种可能的实施方式作为基础而提供的第四种可能的 实施方式中, 所述第一小区的时频资源信息至少包括第一小区的载频信息、 所 述载频的功率信息、 时隙的信息和所述时隙上的功率信息中的任意一种。 在第一、第二或者第三种可能的实施方式作为基础而提供的第五种可能的 实施方式中,第一小区与所述第二小区的干扰关系信息至少包括所述第一小区 对所述第二小区的干扰信息。
在第一、第二或者第三种可能的实施方式作为基础而提供的第四种可能的 实施方式中, 所述多系统控制器或者基站的存储器中,还包含用于执行以下操 作的指令: 确定所述第二小区的可用时频资源、 不可用时频资源或者所述第二 小区的时频资源所受干尤的强度信息。
假设上述为第一种可能的实施方式,则在第一种可能的实施方式作为基础 而提供的第六种可能的实施方式中,第二小区的时频资源信息具体用于指示所 述第二小区使用所述第二小区的第一载波进行跨载波调度所述第二小区的第 二载波, 其中, 所述第二载波包括所述第一小区和所述第二小区共享的时频资 源。
在第一种可能的实施方式作为基础而提供的第七种可能的实施方式中,所 述多系统控制器或者基站的存储器中,还包含用于执行以下操作的指令: 将所 述第二小区的时频资源信息发送至所述第二小区的基站。
作为另一方面, 本发明再一实施例还提供了一种计算机可读存储介质, 该 计算机可读存储介质可以是上述实施例中的存储器中所包含的计算机可读存 储介质; 也可以是单独存在, 未装配入终端中的计算机可读存储介质。 所述计 算机可读存储介质存储有一个或者一个以上程序,所述一个或者一个以上程序 被一个或者一个以上的处理器用来执行一个异制式系统下的干扰协调方法方 法, 所述方法包括:
获取第一小区的时频资源信息以及所述第一小区与所述第二小区的干扰 关系信息,所述第一小区与所述第二小区的干扰关系信息用于确定所述第一小 区在时频上对所述第二小区的干扰,所述第一小区与所述第二小区具有不同制 式; 根据所述第一小区的时频资源信息和所述干扰关系信息,确定所述第二小 区的时频资源信息,所述第二小区的时频资源信息用于第二小区进行时频资源 调度。 假设上述为第一种可能的实施方式,则在第一种可能的实施方式作为基础 而提供的第二种可能的实施方式中,所述获取所述第一小区的时频资源信息包 括: 接收所述第一小区的基站发送的所述第一小区的时频资源信息。
假设上述为第一种可能的实施方式,则在第一种可能的实施方式作为基础 而提供的第三种可能的实施方式中,所述获取所述第一小区与所述第二小区的 干扰关系信息包括: 接收所述第二小区的基站发送的所述干扰关系信息。
在第一、第二或者第三种可能的实施方式作为基础而提供的第四种可能的 实施方式中, 所述第一小区的时频资源信息至少包括第一小区的载频信息、 所 述载频的功率信息、 时隙的信息和所述时隙上的功率信息中的任意一种。
在第一、第二或者第三种可能的实施方式作为基础而提供的第五种可能的 实施方式中,所述第一小区与所述第二小区的干扰关系信息至少包括所述第一 小区对所述第二小区的干扰信息。
在第一、第二或者第三种可能的实施方式作为基础而提供的第六种可能的 实施方式中, 所述根据所述第一小区的时频资源信息和所述干扰关系信息, 确 定所述第二小区的时频资源信息, 包括: 确定所述第二小区的可用时频资源、 不可用时频资源或者所述第二小区的时频资源所受干扰的强度信息。
在第一种可能的实施方式作为基石出而提供的第七种可能的实施方式中,所 述第二小区的时频资源信息具体用于指示所述第二小区使用所述第二小区的 第一载波进行跨载波调度所述第二小区的第二载波, 其中, 所述第二载波包括 所述第一小区和所述第二小区共享的时频资源。
假设上述为第一种可能的实施方式,则在第一种可能的实施方式作为基础 而提供的第八种可能的实施方式中, 所述方法还包括: 将所述第二小区的时频 资源信息发送至所述第二小区的基站。
需要说明的是, 上述装置各模块 /单元之间的信息交互、 执行过程等内容, 由于与本发明方法实施例基于同一构思,其带来的技术效果与本发明方法实施 例相同, 具体内容可参见本发明方法实施例中的叙述, 此处不再赘述。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步 骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读 存储介质中, 存储介质可以包括: 只读存储器(ROM, Read Only Memory ) 、 随机存取存储器(RAM, Random Access Memory ) 、 磁盘或光盘等。
以上对本发明实施例提供的一种异制式系统下的干扰协调方法、装置和设 阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时, 对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围 上均会有改变之处, 综上所述, 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种异制式系统下的干扰协调方法, 其特征在于, 所述方法包括: 获取第一小区的时频资源信息以及所述第一小区与所述第二小区的干扰 关系信息,所述第一小区与所述第二小区的干扰关系信息用于确定所述第一小 区对所述第二小区的干扰, 所述第一小区与所述第二小区具有不同制式; 根据所述第一小区的时频资源信息和所述干扰关系信息,确定所述第二小 区的时频资源信息,所述第二小区的时频资源信息用于第二小区进行时频资源 调度。
2、 如权利要求 1所述的方法, 其特征在于, 所述获取所述第一小区的时频 资源信息包括: 接收所述第一小区的基站发送的所述第一小区的时频资源信 息。
3、 如权利要求 1所述的方法, 其特征在于, 所述获取所述第一小区与所述 第二小区的干扰关系信息包括:
接收所述第二小区的基站发送的所述干扰关系信息。
4、 如权利要求 1至 3任意一项所述的方法, 其特征在于, 所述第一小区的 时频资源信息至少包括第一小区的载频信息、所述载频的功率信息、 时隙的信 息和所述时隙上的功率信息中的任意一种。
5、 如权利要求 1至 3任意一项所述的方法, 其特征在于, 所述第一小区与 所述第二小区的干扰关系信息至少包括所述第一小区对所述第二小区的干扰 信息。
6、 如权利要求 1至 3任意一项所述的方法, 其特征在于, 所述根据所述第 一小区的时频资源信息和所述干扰关系信息,确定所述第二小区的时频资源信 息, 包括:
确定所述第二小区的可用时频资源、不可用时频资源或者所述第二小区的 时频资源所受干扰的强度信息。
7、 如权利要求 1所述的方法, 其特征在于, 所述第二小区的时频资源信息 具体用于指示所述第二小区使用所述第二小区的第一载波进行跨载波调度所 述第二小区的第二载波, 其中, 所述第二载波包括所述第一小区和所述第二小 区共享的时频资源。
8、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括:
将所述第二小区的时频资源信息发送至所述第二小区的基站。
9、 一种异制式系统下的干扰协调装置, 其特征在于, 所述装置包括: 获取模块,用于获取第一小区的时频资源信息以及所述第一小区与所述第 二小区的干扰关系信息,所述第一小区与所述第二小区的干扰关系信息用于确 定所述第一小区对所述第二小区的干扰,所述第一小区与所述第二小区具有不 同制式;
确定模块, 用于根据所述第一小区的时频资源信息和所述干扰关系信息 , 确定所述第二小区的时频资源信息,所述第二小区的时频资源信息用于第二小 区进行时频资源调度。
10、 如权利要求 9所述的装置, 其特征在于, 所述获取模块包括: 第一接收单元,用于接收所述第一小区的基站发送的所述第一小区的时频 资源信息。
11、 如权利要求 9所述的装置, 其特征在于, 所述获取模块包括: 第二接收单元, 用于接收所述第二小区的基站发送的所述干扰关系信息。
12、 如权利要求 9至 11任意一项所述的装置, 其特征在于, 所述第一小区 的时频资源信息至少包括第一小区的载频信息、所述载频的功率信息、 时隙的 信息和所述时隙上的功率信息中的任意一种。
13、 如权利要求 9至 11任意一项所述的装置, 其特征在于, 所述第一小区 与所述第二小区的干扰关系信息至少包括所述第一小区对所述第二小区的干 扰信息。
14、 如权利要求 9至 11任意一项所述的装置, 其特征在于, 所述第一确定 模块具体用于确定确定所述第二小区的可用时频资源、不可用时频资源或者所 述第二小区的时频资源所受干扰的强度信息。
15、 如权利要求 9所述的装置, 其特征在于, 所述第二小区的时频资源信 息具体用于指示所述第二小区使用所述第二小区的第一载波进行跨载波调度 所述第二小区的第二载波, 其中, 所述第二载波包括所述第一小区和所述第二 小区共享的时频资源。
16、 如权利要求 9所述的装置, 其特征在于, 所述装置还包括: 发送模块,用于将所述第二小区的时频资源信息发送至所述第二小区的基 站。
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