WO2014012389A1 - 终端的调度方法、装置与系统 - Google Patents

终端的调度方法、装置与系统 Download PDF

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Publication number
WO2014012389A1
WO2014012389A1 PCT/CN2013/074888 CN2013074888W WO2014012389A1 WO 2014012389 A1 WO2014012389 A1 WO 2014012389A1 CN 2013074888 W CN2013074888 W CN 2013074888W WO 2014012389 A1 WO2014012389 A1 WO 2014012389A1
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WO
WIPO (PCT)
Prior art keywords
base station
cell base
terminal
interference
type
Prior art date
Application number
PCT/CN2013/074888
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English (en)
French (fr)
Inventor
冯淑兰
刘劲楠
周晗
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2014012389A1 publication Critical patent/WO2014012389A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/26Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present invention relates to the field of communications, and in particular, to a terminal scheduling method, apparatus, and system. Background technique
  • broadband wireless access systems are working to expand the bandwidth, for example, the maximum bandwidth Third Generation Partnership Project (The 3 rd Generation Partnership Project, 3GPP) system is 20MHz, however, The bandwidth allocated to each operator's operation is generally not too large. Therefore, many broadband wireless access systems are currently single-frequency networks, that is, the frequency range of the working channels of each cell base station is the same. In a single-frequency network, in order to avoid interference between cell base stations, a partial frequency multiplexing method is generally used, that is, a part of the protected frequency resources are allocated to each cell base station, as shown in FIG.
  • 3GPP Third Generation Partnership Project
  • other neighbor cell base stations reduce the transmit power or do not transmit to avoid interference to the protected cell base station, and users at the cell base station edge can use these protected frequency resources for communication, while the cell base station center user Frequency resources within the full working bandwidth can be used.
  • the terminal transmits an uplink signal to a Macro Base Station (mBS) to ensure that the signal arriving at the mBS is cyclically redundant in the mBS.
  • mBS Macro Base Station
  • the terminal needs to transmit signals with respect to the receiving Timing Advance (TA) of the mBS, and 4 sets the downlink transmission of the mBS and the neighbor's Femto Base Station (fBS).
  • TA Timing Advance
  • fBS Femto Base Station
  • the terminal receives the downlink signal transmitted by the mBS at time t1, and obtains the transmission delay of the mBS to the terminal as tdl, in order to ensure the uplink transmission of the terminal.
  • the time to reach the mBS is tO, and the terminal needs to transmit the uplink signal ahead of the transmission time twice its receiving time tdl, that is, the timing advance (TA) is 2tdl.
  • TA timing advance
  • Due to The transmission delay of the terminal to the mBS is different from the transmission delay to the fBS.
  • the transmission delay of the terminal to the fBS is td2, and the downlink timing difference between the signal and the fBS after reaching the fBS is (t 0-t 3).
  • the embodiment of the invention discloses a scheduling method, device and system for a terminal, which solves the problem that the terminal and the neighbor are caused by the signal transmitted by the terminal to the neighboring cell base station exceeding the frequency of the neighboring cell base station in the prior art.
  • an embodiment of the present invention provides a scheduling method for a terminal, where the method includes: determining a type of interference generated by a terminal to a neighboring cell base station, where the neighboring cell base station and the serving cell base station of the terminal are in the same working channel Within the frequency range or the neighboring cell base station and the serving cell base station operating channel have a partial frequency in a same range; according to the type of interference, the terminal is scheduled to be in a working channel of the serving cell base station Within a partial frequency range that does not interfere with the neighbor cell base station.
  • the scheduling method of the terminal may further include: acquiring a reference signal received power RSRP of the neighboring cell base station measured by the terminal a value and a transmission delay difference, where the transmission delay difference is a delay difference between a downlink reference signal sent by the serving cell base station to the terminal and a downlink reference signal sent by the neighbor cell base station to the terminal;
  • the reference signal receiving power RSRP value is used to calculate an interference level value that the terminal generates interference for the neighboring cell base station;
  • the type of the interference generated by the determining terminal to the neighboring cell base station may be implemented by: using the interference level value and The transmission delay difference is used to determine a type of interference generated by the terminal to the neighbor cell base station.
  • the embodiment of the present invention provides a scheduling method for a terminal, where the method includes: receiving, by the terminal, a type of interference generated by the terminal to a neighboring cell base station, where the neighboring cell base station and the serving cell of the terminal The working channel of the base station is in the same frequency range or the neighboring cell base station and the working channel of the serving cell base station have a partial frequency in a same range; according to the type of the interference, the terminal is scheduled in the serving cell Within a partial frequency range within the working channel of the base station that does not interfere with the neighbor cell base station.
  • the terminal is scheduled according to the type of the interference, and the terminal is scheduled to be within a working frequency channel of the serving cell base station, and is not within a part of a frequency range that does not interfere with the neighboring cell base station.
  • the type of the interference is the first interference type, scheduling the terminal in any frequency range within the working channel of the serving cell base station; if the type of the interference is the second interference type, The terminal is scheduled to be in a frequency range outside the protected frequency range of the neighboring cell base station in the working channel of the serving cell base station; if the interference type is the third interference type, the terminal is scheduled in The neighbor cell base station in the working channel of the serving cell base station is within a frequency range outside the protected frequency range and away from the protected frequency range of the neighbor cell base station.
  • the embodiment of the present invention provides a serving cell base station, where the serving cell base station includes: a determining unit, configured to determine a type of interference generated by the terminal to the neighboring cell base station, and send the type of the interference to the scheduling unit.
  • the working channel of the neighboring cell base station and the serving cell base station of the terminal is in the same frequency range, or the neighboring cell base station and the serving cell base station have a part of the working frequency of the working channel
  • the scheduling unit is used for Receiving, by the determining unit, a type of interference generated by the terminal to the neighboring cell base station, and scheduling, according to the type of the interference, the neighboring cell in a working channel of the serving cell base station
  • the base station does not form part of the frequency range of interference.
  • the serving cell base station further includes: a first acquiring unit, configured to acquire a reference signal received power RSRP value and a transmission delay difference of the neighbor cell base station measured by the terminal, and Transmitting the reference signal received power RSRP value to the computing unit, and transmitting the transmission delay difference to the determining unit, where the transmission delay difference is a downlink reference signal sent by the serving cell base station to the terminal a delay difference of the downlink reference signal sent by the neighboring cell base station to the terminal; a calculating unit, configured to receive the reference signal received power RSRP value sent by the first acquiring unit, and calculate the location according to the RSRP value And the determining, by the determining unit, the interference level value, and the determining, by the determining unit, the interference level value, and the Determining, by the first acquisition unit, the transmission delay difference, using the interference level value and the transmission delay difference, determining, by the terminal, the Home cell base station generates interference type.
  • a first acquiring unit configured to acquire a reference signal received power RSRP
  • the serving cell base station further includes: a second acquiring unit, configured to acquire an interference level value and a transmission delay difference generated by the terminal to generate interference to the neighboring cell base station, and Transmitting the interference level value and the transmission delay difference to the determining unit; the determining unit is specifically configured to: receive the interference level value sent by the first acquiring unit, and the transmission delay difference, and use the interference The horizontal value and the transmission delay difference are used to determine a type of carrier interference generated by the terminal to the neighbor cell base station.
  • the embodiment of the present invention provides another serving cell base station, where the serving cell base station includes: a receiving unit, configured to receive, by the terminal, a type of interference generated by the terminal to a neighboring cell base station, and the interference is generated.
  • the type is sent to the scheduling unit, where the working channel of the neighboring cell base station and the serving cell base station of the terminal is in the same frequency range, or the working frequency of the neighboring cell base station and the serving cell base station are in the same range.
  • a scheduling unit configured to receive, by the receiving unit, a type of interference generated by the terminal to the neighboring cell base station, and schedule the terminal to be in a working channel of the serving cell base station according to the type of the interference Within a portion of the frequency range that does not interfere with the neighbor cell base station.
  • the scheduling unit is specifically configured to: if the receiving Receiving, by the receiving unit, the type of the interference is a first interference type, scheduling the terminal in an arbitrary frequency range within a working channel of the serving cell base station; and receiving the type of the interference sent by the receiving unit For the second interference type, scheduling the terminal in a frequency range outside the protected frequency range of the neighbor cell base station in the working channel of the serving cell base station; if receiving the interference sent by the receiving unit If the type is the third interference type, the terminal is scheduled to be outside the protected frequency range of the neighbor cell base station in the working channel of the serving cell base station and away from the protected frequency range of the neighbor d and the base station Within the frequency range.
  • an embodiment of the present invention provides a scheduling system for a terminal, where the system includes a terminal and a serving cell base station, where the terminal is configured to send a reference signal received power RSRP value and a transmission delay difference to the serving cell base station.
  • Interference interference level value using the interference level value and the transmission delay difference, determining that the terminal is small to the neighbor Generating, by the base station, a type of interference, and scheduling, according to the type of the interference, a part of a frequency range within a working channel of the serving cell base station that does not form interference with the neighboring cell base station;
  • the serving cell base station determines, by using the interference level value and the transmission delay difference, the terminal to the neighbor cell base station.
  • Generating a type of interference according to the type of the interference, scheduling the terminal within a part of a frequency range of the working channel of the serving cell base station that does not interfere with the neighboring cell base station.
  • the serving cell base station or the terminal determines the interference type of the terminal to the neighboring cell base station, and the serving cell base station will dispatch the terminal that interferes with the neighboring cell base station to the working channel.
  • the carrier interference between the terminal and the cell base station caused by the signal transmitted by the terminal to the neighbor cell base station is beyond the range acceptable to the neighbor cell base station to some extent. The problem.
  • FIG. 2 is a timing diagram of a terminal and a cell base station in the prior art
  • Figure 4-A is a schematic diagram of a terminal scheduling according to an embodiment of the present invention.
  • Figure 4-C is a schematic diagram of still another terminal scheduling according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a scheduling method of a terminal according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic flowchart of a scheduling method of a terminal according to Embodiment 4 of the present invention.
  • FIG. 8 is a schematic diagram of a base station apparatus for implementing a serving cell according to Embodiment 1 of the present invention.
  • FIG. 10 is a schematic diagram of a serving cell base station apparatus for implementing Embodiment 3 according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a base station apparatus for implementing a serving cell according to Embodiment 4 of the present invention.
  • FIG. 12 is a schematic diagram of a serving cell base station apparatus according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a terminal scheduling system according to Embodiment 5 of the present invention.
  • FIG. 3 is a flowchart of a method for scheduling a terminal according to the first embodiment of the present invention.
  • a host is a serving cell base station.
  • the serving cell base station determines the type of interference generated by the terminal to the neighbor cell base station, where the neighbor cell base station and the working cell base station of the terminal are in the same frequency range or the neighbor cell base station and the The working channel of the serving cell base station of the terminal has a part of the frequency in the same range, and the serving cell base station schedules the terminal to the partial frequency of the neighboring cell base station in the working channel of the serving cell base station according to the determined type of terminal interference.
  • the implementation entity is a serving cell base station:
  • Step 31 Determine a type of interference generated by the terminal to the neighboring cell base station, where the working channel of the neighboring cell base station and the serving cell base station of the terminal is in the same frequency range or the neighboring cell base station and the serving cell base station of the terminal The working channel has some frequencies in the same range;
  • the serving cell base station before the serving cell base station determines the type of interference generated by the terminal to the neighbor cell base station, the serving cell base station further receives related information sent by the terminal, and the serving cell base station uses the phase sent by the terminal. Determining the type of interference generated by the terminal to the neighbor cell base station;
  • the serving cell base station acquires a reference signal received power RSRP value of the neighbor cell base station measured by the terminal, and a transmission delay difference between the neighbor cell base station and the serving cell base station transmitting the downlink reference signal to the terminal,
  • the serving cell base station calculates, according to the RSRP value, an interference level value ISD generated by the terminal to generate interference to the neighbor cell base station, and uses the interference level value ISD and the transmission delay difference to determine the type of interference generated by the terminal to the neighbor cell base station;
  • the serving cell base station may obtain the interference level value ISD generated by the terminal to generate interference to the neighbor cell base station, and when the neighbor cell base station and the serving cell base station send the downlink reference signal transmission delay difference to the terminal, the serving cell base station directly Using the interference level value ISD and the transmission delay difference, determining the type of interference generated by the terminal to the neighbor cell base station;
  • the serving cell base station uses the indirectly calculated interference level value ISD or the directly acquired interference level ISD and the transmission delay difference to determine the type of interference generated by the terminal to the neighbor cell base station;
  • the interference level value is less than the first threshold, setting the type of interference generated by the terminal to the neighboring cell base station is the first interference type
  • the type of interference generated by the terminal to the neighboring cell base station is the third interference type
  • the first threshold is specifically a received bottom noise value of the neighboring cell base station, or a reference sensitivity value of the neighboring cell base station, or a value higher or lower than a reference sensitivity value of the neighboring cell base station; or the neighbor cell base station may The level of interference level tolerated;
  • the second threshold is specifically a cyclic redundancy prefix of a neighbor cell base station (Cyc l ic Pref ix , CP ) Corresponding time.
  • Step 320 According to the type of the interference, scheduling the terminal in a part of a frequency range of the working channel of the serving cell base station that does not form interference with the neighbor cell base station.
  • step 31 if the type of interference is the first interference type, the terminal is scheduled in any frequency range within the working channel of the serving cell base station;
  • the terminal is scheduled to be within a frequency range outside the protected frequency range of the neighbor cell base station in the working channel of the serving cell base station;
  • FIG. 4-A, FIG. 4-B, and FIG. 4-C it is assumed that the serving cell base station of the terminal UE1 is BS1, the neighbor cell base station is BS2, and the working channel of the serving cell base station and the neighbor cell base station are in the same frequency range. .
  • the serving cell base station determines the terminal to the neighbor cell by applying the method provided by the embodiment of the present invention.
  • the type of interference of the base station the serving cell base station will schedule the interference of the neighboring cell base station to the frequency range of the protected frequency range of the neighboring cell base station in the working channel, thereby avoiding the signal exceeding the terminal reaching the neighboring cell base station.
  • the serving cell base station acquires the reference signal received power RSRP value and the transmission delay difference of the neighboring cell base station, and uses the obtained information to determine the type of interference generated by the terminal to the neighbor cell base station, where the neighbor cell
  • the base station is in the same frequency range as the working channel of the serving cell base station of the terminal, and the serving cell base station schedules the terminal within a frequency range in which the terminal does not interfere with the neighbor cell base station according to the determined type of terminal interference.
  • the implementation entity is a serving cell base station:
  • Step 510 The serving cell base station acquires, by the terminal, the reference signal received power RSRP value and the transmission delay difference of the neighbor cell base station.
  • the terminal measures a reference signal received power (RSRP) of the neighboring cell base station, and obtains a reference signal received power RSRP value; the terminal sends the obtained reference signal received power RSRP value to the serving cell base station. ;
  • RSRP reference signal received power
  • the terminal receives the downlink reference signal of the serving cell base station, and acquires the first transmission timing; the terminal receives the downlink reference signal of the neighboring cell base station, and acquires the second transmission timing; the difference between the first transmission timing and the second transmission timing is For the transmission delay difference between the neighbor cell base station and the serving cell base station to the UE, the terminal sends the transmission delay difference to the serving cell base station;
  • Step 520 The serving cell base station calculates, according to the RSRP value, an interference level value that the terminal generates interference to the neighbor cell base station;
  • the serving cell base station After acquiring the RSRP value sent by the terminal, the serving cell base station further acquires a common reference power value (CRS-EPRE) of each resource unit of the common reference signal sent by the neighboring cell base station, and the serving cell
  • the base station can be from the neighbor cell Obtaining, by the base station, the CRS-EPRE value of the neighboring cell base station, and calculating the interference level value ISD generated by the terminal to the neighboring cell base station according to the received reference signal received power RSRP value and the CRS_EPRE value of the neighbor cell base station;
  • the transmit power (P-UE) or the transmit power spectral density (PSD_UE) of the terminal is calculated by the terminal to be sent to the serving cell base station; or the serving cell base station reports the PHR estimate according to the power headroom reported by the terminal.
  • P_UE P_UE_MAX-PHR, where P_UE_MAX is the maximum transmit power of the terminal; or the value set by the serving cell base station according to the distance of the terminal from the base station of the serving cell, to estimate the interference level of the base station of the neighbor neighbor cell, for example, if the terminal is away from the service If the cell base station is relatively close, the terminal transmit power P-UE is given a small value. If the terminal is far away from the serving cell base station, the terminal transmit power P-UE is given a larger value.
  • Step 530 The serving cell base station determines the type of interference generated by the terminal to the neighboring cell base station. Specifically, according to the description of step 520, the serving cell base station obtains the PRRP value sent by the terminal, and calculates the interference generated by the terminal to the neighbor cell base station according to the RSRP value.
  • the interference level value ISD is used to determine the type of interference generated by the terminal to the neighbor cell base station by using the calculated interference level value ISD and the obtained transmission delay difference;
  • the serving cell base station sets the type of interference generated by the terminal to the neighboring cell base station as the first interference type, and the first interference type is the terminal to the neighbor cell base. The station does not cause interference;
  • the serving cell base station sets the type of interference generated by the terminal to the neighboring cell base station as the second interference type, and the second interference type is the terminal
  • the neighboring cell base station generates interference, but does not cause interference to the neighbor cell base station. As long as the terminal is scheduled to be outside the protected frequency range of the neighbor cell base station, no interference will be generated to the neighbor cell base station;
  • the serving cell base station sets the type of interference generated by the terminal to the neighbor cell base station to the second interference type, and at this time, the terminal will The neighbor cell base station generates interference, but does not base on the neighbor cell.
  • the station generates carrier interference, and as long as the terminal is scheduled outside the protected frequency range of the neighbor cell base station, no interference will be generated to the neighbor cell base station;
  • the serving cell base station sets the terminal to the neighbor cell base station.
  • the type of the generated interference is set to the third interference type.
  • the terminal may cause interference to the neighboring cell base station, and even if the terminal is scheduled to be in the protected frequency range of the neighboring cell base station, there may be interference due to different timings;
  • the interference level value is not less than the first threshold, and the transmission delay difference is less than zero, the absolute value of the value of the transmission delay difference and the neighbor cell base station symbol time length value is smaller than the neighbor cell base station symbol time length value and the The difference between the two thresholds, the serving cell base station bases the neighbor base cell
  • the type of interference generated by the station is set to the third interference type.
  • the terminal may cause interference to the neighboring cell base station, and even if the terminal is scheduled to be in the protected frequency range of the neighboring cell base station, there may be interference due to different timings. ;
  • the serving cell base station sets the interference generated by the terminal to the neighbor cell base station to the second interference type.
  • the terminal may generate interference to the neighbor cell base station, but does not generate carrier interference to the neighbor cell base station, as long as When the terminal is scheduled to be outside the protected frequency range of the neighbor cell base station, no interference will be generated to the neighbor cell base station;
  • the first threshold is specifically a received bottom noise value of the neighboring cell base station, or a reference sensitivity value of the neighboring cell base station, or a value higher or lower than a reference sensitivity value of the neighboring cell base station; or the neighbor cell base station may The level of interference level tolerated;
  • the second threshold is specifically the time corresponding to the cyclic prefix CP of the neighboring cell base station; the time length value of the neighboring cell base station symbol is specifically: the length of time occupied by each symbol in the slot subframe of the neighboring cell base station.
  • the serving cell base station uses the indirectly calculated interference level value ISD and the transmission time difference to identify the type of interference generated by the terminal to the neighboring cell base station, and then, according to the type of the interference, schedules the terminal in the neighboring cell base station.
  • ISD indirectly calculated interference level value
  • the serving cell base station uses the indirectly calculated interference level value ISD and the transmission time difference to identify the type of interference generated by the terminal to the neighboring cell base station, and then, according to the type of the interference, schedules the terminal in the neighboring cell base station.
  • the serving cell base station schedules the terminal within the working channel range of the serving cell base station and within any frequency range;
  • the serving cell base station schedules the terminal within the working channel range of the serving cell base station and the frequency range outside the protected frequency range of the neighboring cell base station; If the type of interference is the third interference type described in step 530, the serving cell base station schedules the terminal within the working channel range of the serving cell base station, the neighboring cell base station is outside the protected frequency range, and is far away from the neighbor.
  • the frequency range of the protected frequency is as follows: the scheduling of the terminal in the protected frequency range of the neighboring cell base station is specifically: the distance between the protected frequency range of the neighboring cell base station and the terminal scheduling frequency range is greater than a preset
  • the fixed distance threshold is such that the terminal does not cause interference to neighbor cells.
  • the serving cell base station receives the RSRP value sent by the terminal, calculates the interference level value ISD generated by the terminal to the neighboring cell base station, and uses the calculated interference level value ISD and the terminal to send.
  • the transmission delay difference sets the type of interference generated by the terminal to the neighboring cell base station, and the terminal that causes interference to the neighbor cell base station is scheduled to be in a different frequency range away from the neighbor cell base station, thereby avoiding that the signal of the neighboring cell base station exceeds the neighbor due to the terminal reaching the neighbor cell base station.
  • the problem that the cell base station can accept the carrier interference between the terminal and the cell base station.
  • the serving cell base station acquires the interference level value ISD and the transmission delay difference generated by the terminal to the neighboring cell base station, and uses the obtained information to determine the type of interference generated by the terminal to the neighbor cell base station, and the neighbor cell base station and The working channel of the serving cell base station of the terminal is in the same frequency range, and the serving cell base station schedules the terminal within a frequency range in which the terminal does not interfere with the neighbor cell base station according to the determined type of carrier interference of the terminal.
  • the implementation entity is a serving cell base station:
  • Step 610 The serving cell base station acquires an interference level value and a transmission delay difference generated by the terminal to generate interference to the neighbor cell base station.
  • the terminal After the terminal further acquires the reference signal receiving power RSRP value, the terminal also acquires the neighbor small
  • the common reference signal (CRS-EPRE) of the common reference signal transmitted by the base station is calculated according to the received reference signal received power RSRP value and the CRS_EPRE value of the neighbor cell base station.
  • the terminal receives the downlink reference signal of the serving cell base station, and acquires the first transmission timing; the terminal receives the downlink reference signal of the neighboring cell base station, and acquires the second transmission timing; the difference between the first transmission timing and the second transmission timing is The transmission delay difference between the neighbor cell base station and the serving cell base station to itself;
  • the terminal sends the calculated interference level value ISD and the transmission delay difference to the serving cell base station, and the serving cell base station receives the interference level value ISD and the transmission delay difference sent by the terminal, and is used to determine the type of interference generated by the terminal to the neighbor cell base station. ;
  • the distance of the serving cell base station is a value set for estimating the interference level of the terminal neighbor cell base station. For example, if the terminal is closer to the serving cell base station, the terminal transmit power P-UE is given a smaller value if the terminal is away from the service. If the cell base station is far away, the terminal transmit power P-UE is given a larger value.
  • Step 620 The serving cell base station determines the type of interference generated by the terminal to the neighboring cell base station. Specifically, according to the description of step 610, the serving cell base station acquires the interference level value ISD and the transmission delay difference sent by the terminal, and uses the interference level value I SD And the transmission delay difference, determining the type of interference generated by the terminal to the neighbor cell base station; The serving cell base station uses the interference level value I SD and the transmission delay difference to determine that the type of interference generated by the terminal to the neighbor cell base station is specifically:
  • the serving cell base station sets the type of interference generated by the terminal to the neighboring cell base station as the second interference type, and the second interference type is the terminal
  • the neighboring cell base station generates interference, but does not generate carrier interference to the neighbor cell base station. As long as the terminal is scheduled to be outside the protected frequency range of the neighbor cell base station, no interference will be generated to the neighbor cell base station;
  • the serving cell base station sets the type of interference generated by the terminal to the neighboring cell base station to the second interference type; if the interference level value is not less than the first Threshold, and the transmission delay difference is greater than or equal to zero, when transmitting Differential operation modulo value with the neighboring cell base station symbol time length than the second threshold value, the serving cell sites will generate interference to the terminal type of the neighbor cell base station to a third type of interference;
  • the serving cell base station sets the type of interference generated by the terminal to the neighboring cell base station to the third interference type; If the interference level value is not less than the first threshold, and the transmission delay difference is less than zero, the absolute value of the value of the transmission delay difference and the neighbor cell base station symbol time length value is greater than the neighbor cell base station symbol time length value and the The difference between the two thresholds, the serving cell base station sets the type of interference generated by the terminal to the neighboring cell base station to the second interference type;
  • the first threshold is specifically a received bottom noise value of the neighboring cell base station, or a reference sensitivity value of the neighboring cell base station, or a signal higher or lower than a reference sensitivity value of the neighboring cell base station; or a neighbor cell The interference level value that the base station can tolerate;
  • the second threshold is specifically a time corresponding to a cyclic prefix (Cyc l ic Pref ix, CP ) of the neighbor cell base station;
  • Step 630 The serving cell base station schedules, according to the type of the interference, the terminal within a working channel range of the serving cell base station and within a frequency range that does not form interference to the neighbor cell base station.
  • the serving cell base station uses the indirectly calculated interference level value ISD and the transmission time difference to identify the type of interference generated by the terminal to the neighboring cell base station, and then, according to the type of the interference, schedule the terminal in the neighboring cell base station.
  • ISD indirectly calculated interference level value
  • the serving cell base station uses the indirectly calculated interference level value ISD and the transmission time difference to identify the type of interference generated by the terminal to the neighboring cell base station, and then, according to the type of the interference, schedule the terminal in the neighboring cell base station.
  • the serving cell base station schedules the terminal within the working channel range of the serving cell base station and within any frequency range;
  • the serving cell base station schedules the terminal within the working channel range of the serving cell base station and the frequency range outside the protected frequency range of the neighboring cell base station;
  • the serving cell base station schedules the terminal within the working channel range of the serving cell base station, the neighboring cell base station is outside the protected frequency range, and is away from the neighbor.
  • the frequency range of the protected frequency; the scheduling of the terminal in the protected frequency range of the base station away from the neighboring cell specifically refers to: the protected frequency of the neighboring cell base station.
  • the distance between the range and the terminal scheduling frequency range should be greater than a preset distance threshold, so that the terminal does not cause interference to neighbor cells.
  • the serving cell base station receives the interference level value ISD and the transmission delay difference sent by the terminal, and uses the interference level value ISD and the transmission delay difference to determine the type of interference generated by the terminal to the neighbor cell base station.
  • the terminal that will cause interference to the neighbor cell base station is scheduled to be in a different frequency range away from the neighbor cell base station, and the terminal and the cell base station are avoided between the terminal and the cell base station because the signal of the terminal reaching the neighbor cell base station exceeds the range acceptable to the neighbor cell base station.
  • the problem of carrier interference is described in a different frequency range away from the neighbor cell base station, and the terminal and the cell base station are avoided between the terminal and the cell base station because the signal of the terminal reaching the neighbor cell base station exceeds the range acceptable to the neighbor cell base station.
  • FIG. 7 is a flowchart of a method for scheduling a terminal according to Embodiment 4 of the present invention.
  • the terminal identifies its own type of interference generated by the neighboring cell base station, and sends the identified type of interference to the serving cell base station.
  • the serving cell base station receives the type of interference identified by the terminal itself, according to the interference.
  • the type determining the scheduling of the terminal, and the following method is required to implement the scheduling method of the terminal.
  • the implementation entity is the serving cell base station:
  • Step 710 The type of the interference generated by the terminal sent by the terminal to the neighboring cell base station, where the neighbor cell base station and the working cell base station of the terminal are in the same frequency range or the neighbor cell base station and the terminal
  • the working channel of the serving cell base station has a part of the frequency in the same range
  • the terminal measures a reference signal received power (RSRP) of the neighboring cell base station, and obtains a reference signal received power RSRP value;
  • RSRP reference signal received power
  • the terminal further acquires a common reference value (CRS-EPRE) of each resource unit of the common reference signal sent by the neighboring cell base station, according to the Common Reference S ignal Energy Per Resource E lement (CRS-EPRE), according to Obtaining a reference signal received power RSRP value and a CRS_EPRE value of the neighbor cell base station, and calculating an interference level value ISD generated by the terminal to generate interference to the neighbor cell base station;
  • CRS-EPRE Common Reference S ignal Energy Per Resource E lement
  • the terminal first calculates the neighboring cell base station to its own path by using the CRS_EPRE power value and the RSRP value.
  • Diameter loss (PL), ie PL (in dB) CRS_EPRE (in dBm) - RSRP (in dBm); Then, using its own transmit power (P-UE) or transmit power spectral density (PSD_UE), and the above calculation
  • the terminal receives the downlink reference signal of the serving cell base station, and acquires the first transmission timing; the terminal receives the downlink reference signal of the neighboring cell base station, and acquires the second transmission timing; the difference between the first transmission timing and the second transmission timing is a transmission delay difference between the neighbor cell base station and the serving cell base station;
  • the terminal uses the calculated interference level value ISD and the transmission delay difference to determine the type of interference generated by the neighbor base cell base station;
  • the terminal sets its own interference type to the neighbor cell base station as the first interference type, that is, the terminal itself does not interfere with the neighbor cell base station;
  • the terminal sets its own interference type to the neighbor cell base station as the third interference type, that is, the terminal may interfere with the neighbor cell base station, and even if The terminal scheduling is outside the protected frequency range of the neighbor cell base station, and there may be interference due to different timings.
  • the above is to compare the transmission delay difference with the second threshold to determine the interference caused by the terminal to the neighboring cell base station, and further, by further identifying the transmission delay difference, thereby determining the interference caused by the terminal to the neighboring cell. If the interference level value is not less than the first threshold, and the transmission delay difference is greater than or equal to zero, and the value of the transmission delay difference and the neighbor cell base station symbol time length value is less than the second threshold, the terminal sets its own to the neighbor cell base station.
  • Interference type is the second interference Types of;
  • the absolute value of the value of the transmission delay difference and the neighbor cell base station symbol length is greater than the neighbor cell base station symbol time length value and the second threshold.
  • the difference between the terminal sets the interference type of the neighboring cell base station to the third interference type
  • the first threshold is specifically a received bottom noise value of the neighboring cell base station, or a reference sensitivity value of the neighboring cell base station, or a signal higher or lower than a reference sensitivity value of the neighboring cell base station; or a neighbor cell The interference level value that the base station can tolerate;
  • the second threshold is specifically a time corresponding to a cyclic redundancy prefix (Cyc l ic Pref ix , CP ) of the neighboring cell base station.
  • the neighbor cell base station symbol time length value is specifically: a length of time occupied by each symbol in a slot subframe of the neighbor cell base station.
  • the transmit power (P-UE) of the terminal is an estimated value of the transmit power of the terminal, for example, a statistical average of the transmit power of the terminal in the near future, such as a statistical average of the transmit power of the last 10 times. Or the statistical average of the terminal transmit power in the last 100 ms; or divide the transmit power of the terminal into multiple levels, and determine the transmit power level of the terminal according to the near and far situation of the base station and the serving cell base station, and each transmit power level corresponds to a certain transmit power, using the transmit power value corresponding to the transmit power level for interference estimation, for example, a terminal with a near distance from the serving cell base station has a low transmit power, and a lower transmit power level is used for interference estimation; The terminal with a long distance has a high transmit power, and a higher transmit power level is used for interference estimation; or according to the power headroom report (PHR) of the terminal, the PHR has a lower terminal transmit power, PHR The smaller terminal has a higher transmission power, and accordingly sets
  • the serving cell base station receives the type of interference that the terminal sends to the neighbor cell base station by the terminal, and schedules the terminal in a frequency range that does not form carrier interference to the neighbor cell base station according to the type of the interference;
  • the serving cell base station schedules the terminal within the working channel range of the serving cell base station and within any frequency range;
  • the serving cell base station schedules the terminal within a working channel range of the serving cell base station and a frequency range outside the protected frequency range of the neighboring cell base station;
  • the serving cell base station schedules the terminal within the working channel range of the serving cell base station, the neighboring cell base station is outside the protected frequency range, and is far away from the The frequency range of the neighbor-protected frequency is the same; the distance between the protected frequency range of the neighboring cell base station and the terminal scheduling frequency range of the neighboring cell base station is greater than The set distance threshold is such that the terminal does not cause interference to neighbor cells.
  • the scheduling of the terminal by the serving cell base station needs to consider the interference type of the terminal to one or more neighbor cell base stations;
  • the serving cell base station is scheduled to be protected from the neighboring cell base station by the terminal that causes the sub-interference of the neighboring cell base station according to different interference types.
  • the terminal that causes the sub-interference of the neighboring cell base station according to different interference types.
  • the embodiment of the present invention further provides a serving cell base station, which is used to implement the scheduling method of the terminal in the first embodiment, as shown in the following figure.
  • the serving cell base station includes: a determining unit 810 and a scheduling unit 820.
  • the determining unit 810 is configured to determine a type of interference generated by the terminal to the neighboring cell base station, and send the type of the interference to the scheduling unit, where the working channel of the neighboring cell base station and the serving cell base station of the terminal are in the same frequency range. Or the neighboring cell base station and the working cell base station of the terminal have a working frequency of a part of the same frequency range;
  • the scheduling unit 820 is configured to receive, by the determining unit, a type of interference generated by the terminal to the neighboring cell base station, and schedule the terminal to be in a working channel of the serving cell base station according to the type of the interference Within a portion of the frequency range that does not interfere with the neighbor cell base station.
  • the determining unit 810 is specifically configured to: if the interference level value is less than the first threshold, set the type of interference generated by the terminal to the neighboring cell base station as a first interference type, and send the first interference type to a scheduling unit ;
  • interference level value is not less than the first threshold, and the transmission delay difference is not greater than the second threshold, setting the type of interference generated by the terminal to the neighboring cell base station as the second interference type, Two interference types are sent to the scheduling unit;
  • the type of interference generated by the terminal to the neighboring cell base station is a third interference type, and the third The interference type is sent to the scheduling unit.
  • the determining unit determines the interference type of the terminal to the neighboring cell base station, and the scheduling unit schedules the terminal that causes interference to the neighboring cell base station to be protected from the neighboring cell base station in the working channel.
  • the frequency range of the frequency range the problem of carrier interference between the terminal and the cell base station caused by the terminal reaching the range of the neighbor cell base station exceeding the acceptable range of the neighbor cell base station is avoided.
  • the embodiment of the present invention further provides a serving cell base station, which is used to implement the scheduling method of the terminal in the second embodiment.
  • the serving cell base station includes: a first acquiring unit 910, a calculating unit 920.
  • the determining unit 810 and the scheduling unit 820 are included in the serving cell base station.
  • the calculating unit 920 is configured to receive the reference signal received power RSRP value sent by the first acquiring unit, and calculate, according to the RSRP value, an interference level value that the terminal generates interference to the neighbor cell base station, and Transmitting the interference level value to the determining unit
  • the determining unit 810 is specifically configured to: receive the interference level value sent by the calculating unit, and the transmission delay difference sent by the first acquiring unit, and use the interference level value and the transmission delay difference to determine The terminal generates a type of interference to the neighbor cell base station.
  • the first acquiring unit receives the RSRP value sent by the terminal, and the calculating unit calculates the interference level value ISD generated by the terminal to the neighboring cell base station, and the determining unit uses the calculated interference level value.
  • the transmission delay difference sent by the ISD and the terminal determines the type of interference generated by the terminal to the neighboring cell base station, and the scheduling unit will cause interference to the neighbor cell base station.
  • the terminal is scheduled to be in a different frequency range away from the neighboring cell base station, and avoids the problem of carrier interference between the terminal and the cell base station due to the fact that the signal of the neighboring cell base station exceeds the range acceptable to the neighbor cell base station.
  • the embodiment of the present invention further provides a serving cell base station, which is used to implement the scheduling method of the terminal in the third embodiment.
  • the serving cell base station includes: a second acquiring unit 1010, a determining unit 810 and scheduling unit 820.
  • the second acquiring unit 1010 is configured to acquire an interference level value and a transmission delay difference that the terminal generates interference to the neighboring cell base station, and send the interference level value and the transmission delay difference to the determining unit ;
  • the determining unit 820 is specifically configured to: receive an interference level value sent by the first acquiring unit, and the transmission delay difference, and determine, by using the interference level value and the transmission delay difference, the terminal to The neighbor cell base station generates a type of carrier interference.
  • the second acquiring unit receives the interference level value ISD and the transmission delay difference sent by the terminal, and the determining unit determines the terminal to the neighbor cell base station by using the interference level value ISD and the transmission delay difference.
  • the type of the interference is generated, and the scheduling unit will schedule the terminal that interferes with the neighboring cell base station to be in a different frequency range away from the neighboring cell base station, thereby avoiding that the signal that the terminal reaches the neighboring cell base station exceeds the range acceptable to the neighboring cell base station, thereby causing Carrier interference between the terminal and the cell site.
  • the embodiment of the present invention further provides a serving cell base station, which is used to implement the scheduling method of the terminal in the fourth embodiment.
  • the serving cell base station includes: a receiving unit 1110 and a scheduling unit 1120.
  • the receiving unit 1110 is configured to receive, by the terminal, a type of interference generated by the terminal to the neighboring cell base station, and send the type of the interference to the scheduling unit, where the neighboring cell base station and the serving cell base station of the terminal work channel Within the same frequency range or the neighboring cell base station and the working cell base station of the terminal have a partial frequency in a same range;
  • the scheduling unit 1120 is specifically configured to: if the type of the interference sent by the receiving unit is the first interference type, scheduling the terminal in any frequency range within a working channel of the serving cell base station;
  • the type of the interference sent by the receiving unit is the second interference type, scheduling the terminal to be within a frequency range outside the protected frequency range of the neighboring cell base station in the working channel of the serving cell base station Inside;
  • the type of the interference sent by the receiving unit is a third interference type, scheduling the terminal to be outside the protected frequency range of the neighboring cell base station in the working channel of the serving cell base station and away from the The neighboring cell base station is within the frequency range of the protected frequency range.
  • the receiving unit receives the type of interference that the terminal determines by itself, and the scheduling unit schedules the terminal that causes the sub-interference to the neighboring cell base station to be protected from the neighboring cell base station according to different interference types.
  • the problem of carrier interference between the terminal and the cell base station caused by the terminal reaching the range of the neighbor cell base station beyond the acceptable range of the neighbor cell base station is avoided.
  • a serving cell base station provided by the embodiment of the present invention may also be implemented as follows to implement a scheduling method of a terminal in the method embodiment.
  • the serving cell base station includes: a processor 1210, The memory 1220 and the receiver 1230.
  • the processor 1210 is configured to determine a type of interference generated by the terminal to the neighboring cell base station, where the neighbor cell base station and the working cell base station of the terminal are in the same frequency range or the neighbor cell base station and the service
  • the working channel of the cell base station has a part of the frequency in the same range; according to the type of the interference, the terminal is scheduled to be within a frequency range of the working cell base station that does not interfere with the neighbor cell base station in the working channel of the serving cell base station .
  • the processor 1210 is further configured to: calculate, according to the reference signal received by the receiver, a power RSRP value, and calculate an interference level value that the terminal generates interference to the neighboring cell base station; the processor 1210 is further specifically used to: And determining, by using the interference level value and the transmission delay difference, a type of interference generated by the terminal to the neighbor cell base station.
  • the receiver 1230 is configured to: acquire an interference level value and a transmission delay difference generated by the terminal to generate interference to the neighbor cell base station, and obtain the acquired interference level value and transmission delay. The difference is transmitted to the processor;
  • the processor 1210 is further configured to: determine, by using the interference level value and the transmission delay difference transmitted by the receiver, a type of interference generated by the terminal to the neighbor cell base station.
  • the step of the processor 1210 determining the interference type may be implemented as follows: if the interference level value is less than the first threshold, setting the type of interference generated by the terminal to the neighboring cell base station as the first interference Types of;
  • the interference level value is not less than the first threshold, and the transmission delay difference is not greater than the second threshold, setting a type of interference generated by the terminal to the neighboring cell base station as a second interference type; If the horizontal value is not less than the first threshold, and the transmission delay difference is greater than the second threshold, setting the type of interference generated by the terminal to the neighboring cell base station is a third interference type.
  • processor 1210 is configured to:
  • the type of the interference is the first interference type, scheduling the terminal in any frequency range within the working channel of the serving cell base station;
  • the neighbor cell base station in the working channel of the area base station is within a frequency range outside the protected frequency range;
  • the type of the interference is a third interference type, scheduling the terminal to be outside the protected frequency range of the neighboring cell base station in the working channel of the serving cell base station and away from the protected frequency of the neighboring cell base station Within the frequency range of the range.
  • another serving cell base station provided by the embodiment of the present invention may also be implemented as follows to implement a scheduling method of a terminal in the method embodiment.
  • the serving cell base station includes: The device 1 31 0, the memory 1 320, and the receiver 1 330.
  • the receiver 1 330 is configured to receive, by the terminal, a type of interference generated by the terminal to a neighboring cell base station, where the neighbor cell base station and the working cell base station of the terminal are in the same frequency range or the neighbor
  • the cell base station and the serving cell base station have a partial frequency in a same range, and transmit the received type of interference generated by the terminal to the neighbor cell base station to the processor; the receiver 1 330 can be implemented as one or Multiple base station antennas.
  • the processor 1 310 is configured to receive, by the receiver, a type of interference generated by the terminal to the neighboring cell base station, and schedule the terminal to be in a working channel of the serving cell base station according to the type of the interference. Within a partial frequency range that does not interfere with the neighbor cell base station.
  • the processor 1 310 is further configured to: if the type of the interference is a first interference type, scheduling the terminal in any frequency range within a working channel of the serving cell base station;
  • the type of the interference is the second interference type, scheduling the terminal in a frequency range outside the protected frequency range of the neighboring cell base station in the working channel of the serving cell base station;
  • the type of the interference is a third interference type, scheduling the terminal to be outside the protected frequency range of the neighboring cell base station in the working channel of the serving cell base station and away from the protected frequency of the neighboring cell base station Within the frequency range of the range.
  • the memory in the embodiment of the present invention may be a USB flash drive, a mobile hard disk, or a read only memory.
  • a variety of media that can store program code such as memory, random access memory, disk, or optical disk.
  • the serving cell base station When the serving cell base station receives the reference signal received power RSRP value and the transmission delay difference sent by the terminal, the serving cell base station calculates a power RSRP value according to the reference signal, and calculates the terminal pair Determining an interference level value of the neighboring cell base station, and determining, by using the interference level value and the transmission delay difference, a type of interference generated by the terminal to the neighboring cell base station, and according to the type of the interference, The terminal scheduling is within a partial frequency range in the working channel of the serving cell base station that does not interfere with the neighbor cell base station;
  • the serving cell base station When the serving cell base station receives the interference level value and the transmission delay difference sent by the terminal, the serving cell base station determines the terminal pair by using the interference level value and the transmission delay difference.
  • the neighboring cell base station generates a type of interference, and according to the type of the interference, the terminal is scheduled to be within a part of a frequency range of the working channel of the serving cell base station that does not interfere with the neighboring cell base station.
  • the fifth embodiment of the present invention further provides a scheduling system for a terminal, which is used to implement the scheduling method of the terminal in the foregoing embodiment, and a corresponding device.
  • the system includes a terminal and a serving cell base station.
  • the terminal is configured to send, to the serving cell, an interference type generated by the terminal to a neighboring cell base station, where the serving cell base station is configured to receive, by the terminal, a type of interference generated by the terminal to a neighboring cell base station, according to The type of the interference, the terminal is scheduled to be within a part of a frequency range within the working channel of the serving cell base station that does not interfere with the neighboring cell base station.
  • the various embodiments in the specification are described in a progressive manner, and the same or similar parts of the various embodiments may be referred to each other, and each embodiment focuses on differences from other embodiments.
  • the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, ie may be located One place, or it can be distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM, Random Acces s Memory), a magnetic disk, or an optical disk, and the like, which can store program codes. medium.

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Abstract

本发明实施例涉及一种终端的调度方法、装置与系统。所述方法包括:判断终端对邻居小区基站生成干扰的类型,所述邻居小区基站与所述终端的服务小区基站的工作信道在同一频率范围内或者所述邻居小区基站与所述终端的服务小区基站的工作信道有部分频率在同一范围内;根据所述干扰的类型,将所述终端调度在所述服务小区基站的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。

Description

说 明 书 终端的调度方法、 装置与系统 技术领域
本发明涉及通讯领域, 尤其涉及一种终端的调度方法、 装置与系统。 背景技术
目前, 为了能提高终端的速率, 普遍的方法是宽带无线接入系统均将工 作带宽扩大, 例如, 第三代伙伴计划 (The 3rd Generation Partnership Project, 3GPP) 系统的最大带宽为 20MHz, 但是, 分配给每个运营商运营的 带宽一般也不会太大, 因此, 目前很多的宽带无线接入系统均是单频网, 即 每个小区基站的工作信道的频率范围都相同。 在单频网中, 为了避免小区基 站间干扰, 一般釆用部分频率复用的方法, 即为每个小区基站都分配一部分 受保护的频率资源, 如图 1 所示, 在各个小区基站的受保护的频率资源内, 其他邻居小区基站都降低发射功率或者不发射以避免对受保护小区基站的干 扰, 小区基站边缘的用户可以使用这些受保护的频率资源进行通信, 而小区 基站中心的用户则可以使用全部的工作带宽内的频率资源。
在正交频分复用 ( Orthogonal Frequency DivisionMultiplexing, OFDM ) 系统中, 如图 1 所示, 终端传输上行信号至宏基站(Macro Base Station, mBS) , 为了保证到达 mBS的信号在 mBS的循环冗余前缀(Cyclic Prefix, CP )范围内,终端要相对其接收 mBS的下行定时时间提前量( Timing Advance, TA)传输信号, 4叚设 mBS和邻居的家庭基站(Femto Base Station, fBS ) 的 下行传输定时同步, 即 mBS和 fBS都在 tO时刻传输下行信号, 如图 2所示, 终端在 tl时刻收到 mBS传输的下行信号,得到 mBS到终端的传输时延为 tdl, 为了保证终端的上行传输时间到达 mBS的时间为 tO, 终端需要提前于其接收 时间 tdl两倍的传输时间传输上行信号, 即时间提前量(TA)为 2tdl。 由于 终端到 mBS的传输时延与到 fBS的传输时延不同, 设终端到 fBS的传输时延 为 td2 , 则这个信号到达 fBS后与 fBS的下行定时差为(t 0-t 3)。如果(t 0-t 3) 小于等于 fBS的 CP , 则终端的载波扩展落入到 fBS后, 通过积分后可以消除, 即不存在干扰; 但如果(t 0-t 3)大于 fBS的 CP , 则终端的载波扩展落入到 fBS 后, 无法消除, 会对 fBS造成干扰。 发明内容
本发明实施例公开了一种终端的调度方法、 装置与系统, 以一定程度上 解决现有技术中由于终端向邻居小区基站发送的信号超出邻居小区基站频率 可以接受的范围, 而导致终端与邻居小区基站间载波干扰的问题。
第一方面, 本发明实施例提供了一种终端的调度方法, 该方法包括: 判 断终端对邻居小区基站生成干扰的类型, 所述邻居小区基站与所述终端的服 务小区基站的工作信道在同一频率范围内或者所述邻居小区基站与所述服务 小区基站的工作信道有部分频率在同一范围内; 根据所述干扰的类型, 将所 述终端调度在在所述服务小区基站的工作信道内的对所述邻居小区基站不形 成干扰的部分频率范围内。
在第一种可能的实现方式中, 该终端的调度方法在判断终端对邻居小区 基站生成干扰的类型的步骤之前还可以包括: 获取所述终端测量的所述邻居 小区基站的参考信号接收功率 RSRP值和传输时延差, 所述传输时延差为所述 服务小区基站向所述终端发送的下行参考信号与所述邻居小区基站向所述终 端发送的下行参考信号的时延差; 根据所述参考信号接收功率 RSRP值, 计算 所述终端对所述邻居小区基站生成干扰的干扰水平值; 所述判断终端对邻居 小区基站生成干扰的类型, 具体可以实现为: 利用所述干扰水平值和所述传 输时延差, 判断所述终端对所述邻居小区基站生成干扰的类型。
在第二种可能的实现方式中, 该终端的调度方法在判断终端对邻居小区 基站生成干扰的类型的步骤之前还可以包括: 获取所述终端对所述邻居小区 基站生成干扰的干扰水平值和传输时延差; 所述判断终端对邻居小区基站生 成干扰的类型, 具体可以实现为: 利用所述干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区基站生成干扰的类型。
第二方面, 本发明实施例提供了一种终端的调度方法, 所述方法包括: 接收终端发送的所述终端对邻居小区基站生成干扰的类型, 所述邻居小 区基站与所述终端的服务小区基站的工作信道在同一频率范围内或者所述邻 居小区基站与所述服务小区基站的工作信道有部分频率在同一范围内; 根据 所述干扰的类型, 将所述终端调度在在所述服务小区基站的工作信道内的对 所述邻居小区基站不形成干扰的部分频率范围内。
在第一种可能的实现方式中, 所述根据所述干扰的类型, 将所述终端调 度在所述服务小区基站的工作信道内的对所述邻居小区基站不形成干扰的部 分频率范围内具体为: 如果所述干扰的类型为第一干扰类型, 则将所述终端 调度在所述服务小区基站的工作信道内的任意频率范围内; 如果所述干扰的 类型为第二干扰类型, 则将所述终端调度在所述服务小区基站的工作信道内 的所述邻居小区基站受保护频率范围之外的频率范围内; 如果所述干扰的类 型为第三干扰类型, 则将所述终端调度在所述服务小区基站的工作信道内的 所述邻居小区基站受保护频率范围之外且远离所述邻居小区基站受保护频率 范围的频率范围内。
第三方面, 本发明实施例提供了一种服务小区基站, 所述服务小区基站 包括: 判断单元, 用于判断终端对邻居小区基站生成干扰的类型, 并将所述 干扰的类型发送给调度单元, 所述邻居小区基站与所述终端的服务小区基站 的工作信道在同一频率范围内或者所述邻居小区基站与所述服务小区基站的 工作信道有部分频率在同一范围内; 调度单元, 用于接收所述判断单元发送 的所述终端对所述邻居小区基站生成干扰的类型, 根据所述干扰的类型, 将 所述终端调度在在所述服务小区基站的工作信道内的对所述邻居小区基站不 形成干扰的部分频率范围内。 在第一种可能的实现方式中, 所述服务小区基站还包括: 第一获取单元, 用于获取所述终端测量的所述邻居小区基站的参考信号接收功率 RSRP值和传 输时延差, 并将所述参考信号接收功率 RSRP值发送给计算单元, 将所述传输 时延差发送给所述判断单元, 所述传输时延差为所述服务小区基站向所述终 端发送的下行参考信号与所述邻居小区基站向所述终端发送的下行参考信号 的时延差; 计算单元, 用于接收所述第一获取单元发送的所述参考信号接收 功率 RSRP值, 根据所述 RSRP值, 计算所述终端对所述邻居小区基站生成干 扰的干扰水平值, 并将所述干扰水平值发送给所述判断单元; 所述判断单元 具体用于: 接收所述计算单元发送干扰水平值, 和所述第一获取单元发送的 所述传输时延差, 利用所述干扰水平值和所述传输时延差, 判断所述终端对 所述邻居小区基站生成干扰的类型。
在第二种可能的实现方式中, 所述服务小区基站还包括: 第二获取单元, 用于获取所述终端对所述邻居小区基站生成干扰的干扰水平值和传输时延 差, 并将所述干扰水平值和所述传输时延差发送给所述判断单元; 所述判断 单元具体用于: 接收所述第一获取单元发送的干扰水平值和所述传输时延差, 利用所述干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区基站 生成载波干扰的类型。
第四方面, 本发明实施例提供了另一种服务小区基站, 所述服务小区基 站包括: 接收单元, 用于接收终端发送的所述终端对邻居小区基站生成干扰 的类型, 并将所述干扰的类型发送给调度单元, 所述邻居小区基站与所述终 端的服务小区基站的工作信道在同一频率范围内或者所述邻居小区基站与所 述服务小区基站的工作信道有部分频率在同一范围内; 调度单元, 用于接收 所述接收单元发送的所述终端对所述邻居小区基站生成干扰的类型, 根据所 述干扰的类型, 将所述终端调度在在所述服务小区基站的工作信道内的对所 述邻居小区基站不形成干扰的部分频率范围内。
在第一种可能的实现方式中, 所述调度单元具体用于: 如果接收所述接 收单元发送的所述干扰的类型为第一干扰类型, 则将所述终端调度在所述服 务小区基站的工作信道内的任意频率范围内; 如果接收所述接收单元发送的 所述干扰的类型为第二干扰类型, 则将所述终端调度在所述服务小区基站的 工作信道内的所述邻居小区基站受保护频率范围之外的频率范围内; 如果接 收所述接收单元发送的所述干扰的类型为第三干扰类型, 则将所述终端调度 在所述服务小区基站的工作信道内的所述邻居小区基站受保护频率范围之外 且远离所述邻居 d、区基站受保护频率范围的频率范围内。
第五方面, 本发明实施例提供了一种终端的调度系统, 所述系统包括终 端和服务小区基站, 所述终端用于向所述服务小区基站发送参考信号接收功 率 RSRP值和传输时延差, 或者干扰水平值和传输时延差, 所述传输时延差为 所述服务小区基站向所述终端发送的下行参考信号与所述邻居小区基站向所 述终端发送的下行参考信号的时延差; 所述服务小区基站用于接收所述终端 发送的所述参考信号接收功率 RSRP值和所述传输时延差, 或者所述干扰水平 值和所述传输时延差; 当所述服务小区基站接收所述终端发送的所述参考信 号接收功率 RSRP值和所述传输时延差时, 所述服务小区基站根据所述参考信 号接收功率 RSRP值, 计算所述终端对所述邻居小区基站生成干扰的干扰水平 值, 利用所述干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区 基站生成干扰的类型, 并根据所述干扰的类型, 将所述终端调度在所述服务 小区基站的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围 内; 当所述服务小区基站接收所述终端发送的所述干扰水平值和所述传输时 延差时, 所述服务小区基站利用所述干扰水平值和所述传输时延差, 判断所 述终端对所述邻居小区基站生成干扰的类型, 根据所述干扰的类型, 将所述 终端调度在所述服务小区基站的工作信道内的对所述邻居小区基站不形成干 扰的部分频率范围内。
第六方面, 本发明实施例提供了另一种终端的调度系统, 所述系统包括 终端和服务小区基站, 所述终端用于将所述终端对邻居小区基站生成的干扰 类型发送至所述服务小区; 所述服务小区基站用于接收所述终端发送的所述 终端对邻居小区基站生成干扰的类型, 根据所述干扰的类型, 将所述终端调 度在在所述服务小区基站的工作信道内的对所述邻居小区基站不形成干扰的 部分频率范围内。
通过应用本发明实施例公开的终端的调度方法、 装置与系统, 服务小区 基站或终端判断终端对邻居小区基站的干扰类型, 服务小区基站将会对邻居 小区基站造成干扰的终端调度到在工作信道内远离邻居小区基站的受保护频 率范围的频率范围内, 从而一定程度上避免了由于终端发送给邻居小区基站 的信号超出邻居小区基站可以接受的范围, 而造成的终端与小区基站间的载 波干扰的问题。 附图说明
图 1为现有技术中终端与小区基站位置示意图;
图 2为现有技术中终端与小区基站定时关系图;
图 3为本发明实施例一提供的终端的调度方法流程示意图;
图 4-A为本发明实施例提供的一终端调度示意图;
图 4-B为本发明实施例提供的另一终端调度示意图;
图 4-C为本发明实施例提供的再一终端调度示意图;
图 5为本发明实施例二提供的终端的调度方法流程示意图;
图 6为本发明实施例三提供的终端的调度方法流程示意图;
图 7为本发明实施例四提供的终端的调度方法流程示意图;
图 8为本发明实施例提供的用于实现实施例一的服务小区基站装置示意 图;
图 9为本发明实施例提供的用于实现实施例二的服务小区基站装置示意 图;
图 10为本发明实施例提供的用于实现实施例三的服务小区基站装置示意 图;
图 11为本发明实施例提供的用于实现实施例四的服务小区基站装置示意 图;
图 12为本发明实施例提供的一服务小区基站装置示意图;
图 1 3为本发明实施例提供的另一服务小区基站装置示意图;
图 14为本发明实施例五提供的终端调度系统示意图;
图 15为本发明实施例六提供的终端调度系统示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面结合附图对本发明 具体实施例作进一步的详细描述。
下面以图 3为例详细说明本发明实施例提供的终端的调度方法, 图 3为 本发明实施例一提供的终端的调度方法流程图, 在本发明实施例中实施主体 为服务小区基站。
如图 3 所示, 服务小区基站判断终端对邻居小区基站生成干扰的类型, 所述邻居小区基站与所述终端的服务小区基站的工作信道在同一频率范围内 或者所述邻居小区基站与所述终端的服务小区基站的工作信道有部分频率在 同一范围内, 服务小区基站根据判断出的终端干扰的类型, 将终端调度在服 务小区基站的工作信道内的对邻居小区基站不形成干扰的部分频率范围内。 具体实现终端的调度方法需以下步骤, 在本发明实施例中实施主体为服务小 区基站:
步骤 31 0、判断终端对邻居小区基站生成干扰的类型, 所述邻居小区基站 与所述终端的服务小区基站的工作信道在同一频率范围内或者所述邻居小区 基站与所述终端的服务小区基站的工作信道有部分频率在同一范围内;
具体地, 在服务小区基站判断终端对邻居小区基站生成干扰的类型之前, 服务小区基站还接收终端发送的相关信息, 服务小区基站利用终端发送的相 关信息判断终端对邻居小区基站生成干扰的类型;
进一步地, 在一种实现方式下, 首先服务小区基站获取终端测量的所述 邻居小区基站的参考信号接收功率 RSRP值和邻居小区基站与服务小区基站向 终端发送下行参考信号的传输时延差, 然后服务小区基站根据该 RSRP值, 计 算终端对邻居小区基站生成干扰的干扰水平值 ISD,利用干扰水平值 ISD和传 输时延差, 判断终端对邻居小区基站生成干扰的类型;
在另一种实现方式下, 服务小区基站可以获取终端对邻居小区基站生成 干扰的干扰水平值 ISD和邻居小区基站与服务小区基站向终端发送下行参考 信号的传输时延差时, 服务小区基站直接利用干扰水平值 ISD和传输时延差, 判断终端对邻居小区基站生成干扰的类型;
需要说明的是, 所述传输时延差具体为: 终端接收服务小区基站的下行 参考信号, 获取第一传输定时; 终端接收邻居小区基站的下行参考信号, 获 取第二传输定时; 所述第一传输定时和所述第二传输定时之间的差即为服务 小区基站和邻居小区基站到自身的传输时延差;
服务小区基站利用间接计算出的干扰水平值 ISD或者直接获取的干扰水 平值 ISD以及传输时延差判断终端对邻居小区基站生成干扰的类型;
如果干扰水平值小于第一阈值, 则设置终端对邻居小区基站生成干扰的 类型为第一干扰类型;
如果干扰水平值不小于第一阈值, 且传输时延差不大于第二阈值, 则设 置终端对邻居小区基站生成干扰的类型为第二干扰类型;
如果干扰水平值不小于第一阈值, 且传输时延差大于第二阈值, 则设置 终端对邻居小区基站生成干扰的类型为第三干扰类型;
需要说明的是, 所述第一阈值具体为邻居小区基站的接收底噪值, 或者 邻居小区基站的参考灵敏度值, 或者比邻居小区基站的参考灵敏度值高或者 低的值; 或者邻居小区基站可以容忍的干扰水平值;
所述第二阈值具体为邻居小区基站的循环冗余前缀(Cyc l ic Pref ix , CP ) 对应的时间。
步骤 320、根据所述干扰的类型, 将所述终端调度在所述服务小区基站的 工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。
具体地, 根据步骤 31 0 的描述, 如果干扰的类型为第一干扰类型, 则将 终端调度在服务小区基站的工作信道内的任意频率范围内;
如果干扰的类型为第二干扰类型, 则将终端调度在服务小区基站的工作 信道内的邻居小区基站受保护频率范围之外的频率范围内;
如果干扰类型为第三干扰类型, 则将终端调度在服务小区基站的工作信 道内的邻居小区基站受保护频率范围之外且远离邻居小区基站受保护频率范 围的频率范围内; 所述将终端调度在远离邻居小区基站受保护频率范围具体 是指: 所述邻居小区基站受保护频率范围与所述终端调度频率范围之间的距 离应大于预先设定的距离阈值, 以使得终端不会对邻居小区造成干扰。
需要说明的是, 所述服务小区基站与所述邻居小区基站可以是宏蜂窝基 站、 微蜂窝基站, 或者是中继站, 或者是射频远端传输点等。
以图 4-A、 图 4-B和图 4-C为例, 假设终端 UE1的服务小区基站为 BS 1 , 邻居小区基站为 BS2 ,服务小区基站和邻居小区基站的工作信道在同一频率范 围内。 如果终端 UE1对邻居小区基站 BS2的干扰类型为第一干扰类型, 则终 端 UE1可以调度在服务小区基站工作信道内的任意频率范围内;如果终端 UE1 对邻居小区基站 BS2的干扰类型为第二干扰类型, 则终端 UE1可以调度在服 务小区基站工作信道内的 BS2 受保护频率范围之外的任意频率范围内; 如果 终端 UE1对邻居小区基站 BS2的干扰类型为第三干扰类型, 则终端 UE1可以 调度在服务小区基站工作信道内的 BS2受保护频率范围之外且远离 BS2的受 保护频率范围的任意频率范围内, 例如, 可以考虑在 BS2 的受保护频率范围 外划分一定的频率范围作为避免 BS 2受子干扰的保护带,终端 UE1调度在 BS2 受保护频率范围之外且在 BS2子干扰保护带之外的频率范围内。
通过应用本发明实施例提供的方法, 服务小区基站判断终端对邻居小区 基站的干扰类型, 服务小区基站将会对邻居小区基站造成干扰的终端调度到 在工作信道内远离邻居小区基站的受保护频率范围的频率范围内, 从而避免 了由于终端达到邻居小区基站的信号超出邻居小区基站可以接受的范围, 而 造成的终端与小区基站间的载波干扰的问题。 本发明实施例二提供的终端的调度方法流程图,
如图 5 所示, 服务小区基站获取终端测量所述邻居小区基站的参考信号 接收功率 RSRP值和传输时延差, 利用获取的信息, 判断终端对邻居小区基站 生成干扰的类型, 所述邻居小区基站与所述终端的服务小区基站的工作信道 在同一频率范围内, 服务小区基站根据判断出的终端干扰的类型, 将终端调 度在所述终端对邻居小区基站不形成干扰的频率范围内。 具体实现终端的调 度方法需以下步骤, 在本发明实施例中实施主体为服务小区基站:
步骤 510、服务小区基站获取所述终端测量所述邻居小区基站的参考信号 接收功率 RSRP值和传输时延差;
具体地,终端测量邻居小区基站的参考信号接收功率(Reference S i gna l Rece ived Power , RSRP ) , 获取参考信号接收功率 RSRP值; 终端将获取的参 考信号接收功率 RSRP值发送至服务小区基站中;
终端接收服务小区基站的下行参考信号, 获取第一传输定时; 终端接收 邻居小区基站的下行参考信号, 获取第二传输定时; 所述第一传输定时和所 述第二传输定时之间的差即为邻居小区基站和服务小区基站到自身的传输时 延差, 终端将传输时延差发送至服务小区基站中;
步骤 520、 服务小区基站根据所述 RSRP值, 计算所述终端对所述邻居小 区基站生成干扰的干扰水平值;
服务小区基站获取终端发送的 RSRP值后, 进一步地, 获取邻居小区基站 发送的公共参考信号每个资源单元的传输功率值(Common Reference S igna l Energy Per Resource E lement , CRS—EPRE ) , 服务小区基站可以从邻居小区 基站处获取邻居小区基站的 CRS-EPRE值,根据获取的参考信号接收功率 RSRP 值和邻居小区基站的 CRS_EPRE值, 计算终端对邻居小区基站生成干扰的干扰 水平值 ISD;
服务小区基站首先利用 CRS_EPRE的功率值和 RSRP值计算邻居小区基站 到终端的路径损耗 ( PL ) , 即 PL (in dB) =CRS_EPRE (in dBm) - RSRP (in dBm); 然后, 利用终端上报的发射功率 (P-UE )或者发射功率谱密度(PSD_UE ) , 和上述计算得到的邻居小区基站到终端的路径损耗(PL )计算终端对邻居小 区基站生成载波干扰的干扰水平值 ISD, 即 ISD=P_UE - PL, 或者 ISD=PSD_UE - PL; 服务小区基站利用自行计算得出的干扰水平值 ISD和获取的传输时延 差, 判断终端对邻居小区基站生成干扰的类型;
需要说明的是, 所述终端的发射功率 (P-UE ) 或者发射功率谱密度 ( PSD_UE ) 为终端自行计算出发送至服务小区基站中; 或者服务小区基站根 据终端上报的功率余量报告 PHR估算得到,P_UE=P_UE_MAX-PHR,其中 P_UE_MAX 为终端最大发射功率; 或者服务小区基站根据终端距离服务小区基站的距离, 为估算终端邻居小区基站的干扰水平而设定的值, 例如, 如果终端距离服务 小区基站较近, 则为终端发射功率 P-UE赋予较小的值, 如果终端距离服务小 区基站较远, 则为终端的发射功率 P-UE赋予较大的值。
步骤 530、 服务小区基站判断终端对邻居小区基站生成干扰的类型; 具体地,根据步骤 520的描述,服务小区基站获取终端发送的 PRRP值后, 根据 RSRP值, 计算终端对邻居小区基站生成干扰的干扰水平值 ISD, 利用计 算出的干扰水平值 ISD和获取的传输时延差, 判断终端对邻居小区基站生成 干扰的类型;
服务小区基站利用所述干扰水平值 ISD和所述传输时延差, 判断终端对 邻居小区基站生成干扰的类型具体为:
如果干扰水平值小于第一阈值, 则服务小区基站设置终端对邻居小区基 站生成干扰的类型为第一干扰类型, 所述第一干扰类型为终端对邻居小区基 站不产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差不大于第二阈值, 则服 务小区基站设置终端对邻居小区基站生成干扰的类型为第二干扰类型, 所述 第二干扰类型为终端会对邻居小区基站产生干扰, 但不会对邻居小区基站造 成干扰, 只要将终端调度到邻居小区基站的受保护频率范围之外, 就不会对 邻居小区基站产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差大于第二阈值, 则服务 小区基站设置终端对邻居小区基站生成干扰的类型为第三干扰类型, 即第三 干扰类型为终端会对邻居小区基站产生干扰, 且即使是终端调度在邻居小区 基站的受保护频段范围外, 也会有由于定时不同, 而产生干扰; 上述为将传 输时延差与第二阈值进行比较后判断终端对邻居小区基站造成的干扰情况, 进一步地, 还可通过对传输时延差的进一步识别, 进而判断终端对邻居小区 造成的干扰情况, 如果干扰水平值不小于第一阈值, 且传输时延差大于等于 零, 传输时延差与邻居小区基站符号时间长度值进行模运算的值小于第二阈 值, 则服务小区基站将终端对邻居小区基站生成干扰的类型设置为第二干扰 类型, 此时, 终端会对邻居小区基站产生干扰, 但不会对邻居小区基站产生 载波干扰, 只要将终端调度到邻居小区基站的受保护频率范围之外, 就不会 对邻居小区基站产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差大于等于零, 传输时延 差与邻居小区基站符号时间长度值进行模运算的值大于第二阈值, 则服务小 区基站将终端对邻居小区基站生成干扰的类型设置为第三干扰类型, 此时, 终端会对邻居小区基站产生干扰, 且即使是终端调度在邻居小区基站的受保 护频段范围外, 也会有由于定时不同, 而产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差小于零, 传输时延差与 所述邻居小区基站符号时间长度值进行模运算的值的绝对值小于邻居小区基 站符号时间长度值与第二阈值的差值, 则服务小区基站将终端对邻居小区基 站生成干扰的类型设置为第三干扰类型, 此时, 终端会对邻居小区基站产生 干扰, 且即使是终端调度在邻居小区基站的受保护频段范围外, 也会有由于 定时不同, 而产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差小于零, 传输时延差与 所述邻居小区基站符号时间长度值进行模运算的值的绝对值大于邻居小区基 站符号时间长度值与第二阈值的差值, 则服务小区基站将终端对邻居小区基 站生成干扰设置为第二干扰类型, 此时, 终端会对邻居小区基站产生干扰, 但不会对邻居小区基站产生载波干扰, 只要将终端调度到邻居小区基站的受 保护频率范围之外, 就不会对邻居小区基站产生干扰;
需要说明的是, 所述第一阈值具体为邻居小区基站的接收底噪值, 或者 邻居小区基站的参考灵敏度值, 或者比邻居小区基站的参考灵敏度值高或者 低的值; 或者邻居小区基站可以容忍的干扰水平值;
所述第二阈值具体为邻居小区基站的循环前缀 CP对应的时间; 所述邻居小区基站符号时间长度值具体为: 在邻居小区基站的时隙子帧 中每个符号所占据的时间长度。
步骤 540、服务小区基站根据所述干扰的类型, 将所述终端调度在所述服 务小区基站的工作信道范围内、 对所述邻居小区基站不形成干扰的频率范围 内。
具体地, 根据步骤 530 的描述, 服务小区基站利用间接计算出的干扰水 平值 ISD和传输时间差识别终端对邻居小区基站生成干扰的类型后, 根据干 扰的类型, 将终端调度在对邻居小区基站不形成干扰的频率范围内;
如果干扰的类型为步骤 530 中描述的第一干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 任意频率范围内;
如果干扰的类型为步骤 530 中描述的第二干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 所述邻居小区基站受保护 频率范围之外的频率范围内; 如果干扰的类型为步骤 530 中描述的第三干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 所述邻居小区基站受保护 频率范围之外且远离所述邻居受保护频率的频率范围内; 所述将终端调度在 远离邻居小区基站受保护频率范围具体是指: 所述邻居小区基站受保护频率 范围与所述终端调度频率范围之间的距离应大于预先设定的距离阈值, 以使 得终端不会对邻居小区造成干扰。
通过应用本发明实施例提供的终端的调度方法, 服务小区基站接收终端 发送的 RSRP值, 计算终端对所述邻居小区基站生成干扰的干扰水平值 ISD, 利用计算出的干扰水平值 ISD和终端发送的传输时延差设置终端对邻居小区 基站生成干扰的类型, 将会对邻居小区基站造成干扰的终端调度到远离邻居 小区基站的不同频率范围内, 避免了由于终端达到邻居小区基站的信号超出 邻居小区基站可以接受的范围, 而造成的终端与小区基站间的载波干扰的问 题。
下面以图 6为例详细说明本发明实施例提供的终端的调度方法, 图 6为 本发明实施例三提供的终端的调度方法流程图;
如图 6 所示, 服务小区基站获取终端对邻居小区基站生成干扰的干扰水 平值 ISD和传输时延差, 利用获取的信息, 判断终端对邻居小区基站生成干 扰的类型, 所述邻居小区基站与所述终端的服务小区基站的工作信道在同一 频率范围内, 服务小区基站根据判断出的终端的载波干扰的类型, 将终端调 度在所述终端对邻居小区基站不形成干扰的频率范围内。 具体实现终端的调 度方法需以下步骤, 在本发明实施例中实施主体为服务小区基站:
步骤 610、服务小区基站获取所述终端对所述邻居小区基站生成干扰的干 扰水平值和传输时延差;
具体地,终端测量邻居小区基站的参考信号接收功率(Reference S i gna l Rece ived Power , RSRP ) , 获取参考信号接收功率 RSRP值;
进一步地, 终端还获取参考信号接收功率 RSRP值后, 终端还获取邻居小 区基站发送的公共参考信号每个资源单元的传输功率值 (Common Reference S igna l Energy Per Resource E lement , CRS-EPRE ) , 根据获取的参考信号 接收功率 RSRP值和邻居小区基站的 CRS_EPRE值, 计算终端对邻居小区基站 生成干扰的干扰水平值 ISD;
终端首先利用 CRS_EPRE的功率值和 RSRP值计算邻居小区基站到终端的 路径损耗 ( PL ) , 即 PL (in dB) =CRS_EPRE (in dBm) - RSRP (in dBm); 然后, 利用自身的发射功率 (P-UE )或者发射功率谱密度(PSD_UE ) , 和上述计算 得到的邻居小区基站到终端的路径损耗(PL )计算终端对邻居小区基站生成 载波干扰的干扰水平值 I SD, 即 ISD=P_UE - PL, 或者 I SD=PSD_UE - PL;
终端接收服务小区基站的下行参考信号, 获取第一传输定时; 终端接收 邻居小区基站的下行参考信号, 获取第二传输定时; 所述第一传输定时和所 述第二传输定时之间的差即为邻居小区基站和服务小区基站到自身的传输时 延差;
终端将计算得出的干扰水平值 ISD和传输时延差发送至服务小区基站, 服务小区基站接收终端发送的干扰水平值 ISD和传输时延差, 用于判断终端 对邻居小区基站生成干扰的类型;
需要说明的是, 所述终端的发射功率 (P-UE ) 或者发射功率谱密度 ( PSD_UE )为终端自行计算; P_UE=P_UE_MAX-PHR, 其中 P_UE_MAX为终端最 大发射功率; 或者服务小区基站根据终端距离服务小区基站的距离, 为估算 终端邻居小区基站的干扰水平而设定的值, 例如, 如果终端距离服务小区基 站较近, 则为终端发射功率 P-UE赋予较小的值, 如果终端距离服务小区基站 较远, 则为终端的发射功率 P-UE赋予较大的值。
步骤 620、 服务小区基站判断终端对邻居小区基站生成干扰的类型; 具体地, 根据步骤 610 的描述, 服务小区基站获取终端发送的干扰水平 值 ISD和传输时延差后, 利用干扰水平值 I SD和传输时延差, 判断终端对邻 居小区基站生成干扰的类型; 服务小区基站利用所述干扰水平值 I SD和所述传输时延差, 判断终端对 邻居小区基站生成干扰的类型具体为:
如果干扰水平值小于第一阈值, 则服务小区基站设置终端对邻居小区基 站生成干扰的类型为第一干扰类型, 所述第一干扰类型为终端对邻居小区基 站不产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差不大于第二阈值, 则服 务小区基站设置终端对邻居小区基站生成干扰的类型为第二干扰类型, 所述 第二干扰类型为终端会对邻居小区基站产生干扰, 但不会对邻居小区基站产 生载波干扰, 只要将终端调度到邻居小区基站的受保护频率范围之外, 就不 会对邻居小区基站产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差大于第二阈值, 则服务 小区基站设置终端对邻居小区基站生成干扰的类型为第三干扰类型, 即第三 干扰类型为终端会对邻居小区基站产生干扰, 且即使是终端调度在邻居小区 基站的受保护频段范围外, 也会有由于定时不同, 而产生干扰; 上述为将传 输时延差与第二阈值进行比较后判断终端对邻居小区基站造成的干扰情况, 进一步地, 还可通过对传输时延差的进一步识别, 进而判断终端对邻居小区 造成的干扰情况, 如果干扰水平值不小于第一阈值, 且传输时延差大于等于 零, 传输时延差与邻居小区基站符号长度进行模运算的值小于第二阈值, 则 服务小区基站将终端对邻居小区基站生成干扰的类型设置为第二干扰类型; 如果干扰水平值不小于第一阈值, 且传输时延差大于等于零, 传输时延 差与邻居小区基站符号时间长度值进行模运算的值大于第二阈值, 则服务小 区基站将终端对邻居小区基站生成干扰的类型设置为第三干扰类型;
如果干扰水平值不小于第一阈值, 且传输时延差小于零, 传输时延差与 所述邻居小区基站符号时间长度值进行模运算的值的绝对值小于邻居小区基 站符号时间长度值与第二阈值的差值, 则服务小区基站将终端对邻居小区基 站生成干扰的类型设置为第三干扰类型; 如果干扰水平值不小于第一阈值, 且传输时延差小于零, 传输时延差与 所述邻居小区基站符号时间长度值进行模运算的值的绝对值大于邻居小区基 站符号时间长度值与第二阈值的差值, 则服务小区基站将终端对邻居小区基 站生成干扰的类型设置为第二干扰类型;
需要说明的是, 所述第一阈值具体为邻居小区基站的接收底噪值, 或者 邻居小区基站的参考灵敏度值, 或者比邻居小区基站的参考灵敏度值高或者 低一定值的信号; 或者邻居小区基站可以容忍的干扰水平值;
所述第二阈值具体为邻居小区基站的循环前缀(Cyc l ic Pref ix, CP )对 对应的时间;
所述邻居小区基站符号时间长度值具体为: 在邻居小区基站的时隙子帧 中每个符号所占据的时间长度。
步骤 630、服务小区基站根据所述干扰的类型, 将所述终端调度在所述服 务小区基站的工作信道范围内、 对所述邻居小区基站不形成干扰的频率范围 内。
具体地, 根据步骤 620 的描述, 服务小区基站利用间接计算出的干扰水 平值 ISD和传输时间差识别终端对邻居小区基站生成干扰的类型后, 根据干 扰的类型, 将终端调度在对邻居小区基站不形成干扰的频率范围内;
如果干扰的类型为步骤 620 中描述的第一干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 任意频率范围内;
如果干扰的类型为步骤 620 中描述的第二干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 所述邻居小区基站受保护 频率范围之外的频率范围内;
如果干扰的类型为步骤 620 中描述的第三干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 所述邻居小区基站受保护 频率范围之外且远离所述邻居受保护频率的频率范围内; 所述将终端调度在 远离邻居小区基站受保护频率范围具体是指: 所述邻居小区基站受保护频率 范围与所述终端调度频率范围之间的距离应大于预先设定的距离阈值, 以使 得终端不会对邻居小区造成干扰。
通过应用本发明实施例提供的终端的调度方法, 服务小区基站接收终端 发送的干扰水平值 ISD和传输时延差, 利用干扰水平值 ISD和传输时延差判 断终端对邻居小区基站生成干扰的类型, 将会对邻居小区基站造成干扰的终 端调度到远离邻居小区基站的不同频率范围内, 避免了由于终端达到邻居小 区基站的信号超出邻居小区基站可以接受的范围, 而造成的终端与小区基站 间的载波干扰的问题。
下面以图 7为例详细说明本发明实施例提供的终端的调度方法, 图 7为 本发明实施例四提供的终端的调度方法流程图;
如图 7 所示, 终端自行识别出自身对邻居小区基站生成干扰的类型, 并 将识别出的干扰的类型发送至服务小区基站, 服务小区基站接收由终端自行 识别的干扰的类型, 根据干扰的类型确定终端的调度情况, 具体实现终端的 调度方法需以下步骤, 在本发明实施例中实施主体为服务小区基站:
步骤 710、接收终端发送的所述终端对邻居小区基站生成干扰的类型,所 述邻居小区基站与所述终端的服务小区基站的工作信道在同一频率范围内或 者所述邻居小区基站与所述终端的服务小区基站的工作信道有部分频率在同 一范围内;
具体地,终端测量邻居小区基站的参考信号接收功率(Reference S i gna l Rece ived Power , RSRP ) , 获取参考信号接收功率 RSRP值;
进一步地, 终端还获取参考信号接收功率 RSRP值后, 终端还获取邻居小 区基站发送的公共参考信号每个资源单元的功率值 (Common Reference S igna l Energy Per Resource E lement , CRS-EPRE ) , 根据获取的参考信号 接收功率 RSRP值和邻居小区基站的 CRS_EPRE值, 计算终端对邻居小区基站 生成干扰的干扰水平值 ISD;
终端首先利用 CRS_EPRE功率值和 RSRP值计算邻居小区基站到自身的路 径损耗 ( PL ) , 即 PL (in dB) =CRS_EPRE (in dBm) - RSRP (in dBm); 然后, 利 用自身的发射功率 (P-UE )或者发射功率谱密度(PSD_UE ) , 和上述计算得 到的邻居小区基站到终端的路径损耗(PL )计算对邻居小区基站的干扰水平 值 ISD, 即 ISD=P_UE - PL, 或者 ISD=PSD_UE - PL;
终端接收服务小区基站的下行参考信号, 获取第一传输定时; 终端接收 邻居小区基站的下行参考信号, 获取第二传输定时; 所述第一传输定时和所 述第二传输定时之间的差即为邻居小区基站和服务小区基站之间的传输时延 差;
终端利用计算出的干扰水平值 ISD和传输时延差, 判断自身对邻居小区 基站生成干扰的类型;
如果干扰水平值小于第一阈值, 则终端设置自身对邻居小区基站的干扰 类型为第一干扰类型, 即终端自身不会对邻居小区基站产生干扰;
如果干扰水平值不小于第一阈值, 且传输时延差不大于第二阈值, 则终 端设置自身对邻居小区基站的干扰类型为第二干扰类型, 即终端自身会对邻 居小区基站产生干扰, 但不会对邻居小区基站产生载波干扰, 即只要终端没 有调度到在邻居小区基站的受保护频率范围内, 就不会对邻居小区基站产生 干扰;
如果干扰水平值不小于第一阈值, 且传输时延差大于第二阈值, 则终端 设置自身对邻居小区基站的干扰类型为第三干扰类型, 即终端会对邻居小区 基站产生干扰, 且即使是终端调度在邻居小区基站的受保护频段范围外, 也 会有由于定时不同而产生干扰。
上述为将传输时延差与第二阈值进行比较后判断终端对邻居小区基站造 成的干扰情况, 进一步地, 还可通过对传输时延差的进一步识别, 进而判断 终端对邻居小区造成的干扰情况, 如果干扰水平值不小于第一阈值, 且传输 时延差大于等于零, 传输时延差与邻居小区基站符号时间长度值进行模运算 的值小于第二阈值, 则终端设置自身对邻居小区基站的干扰类型为第二干扰 类型;
如果干扰水平值不小于第一阈值, 且传输时延差大于等于零, 传输时延 差与邻居小区基站符号时间长度值进行模运算的值大于第二阈值, 则终端设 置自身对邻居小区基站的干扰类型为第三干扰类型;
如果干扰水平值不小于第一阈值, 且传输时延差小于零, 传输时延差与 所述邻居小区基站符号时间长度值进行模运算的值的绝对值小于邻居小区基 站符号时间长度值与第二阈值的差值, 则终端设置自身对邻居小区基站的干 扰类型为第三干扰类型;
如果干扰水平值不小于第一阈值, 且传输时延差小于零, 传输时延差与 所述邻居小区基站符号长度进行模运算的值的绝对值大于邻居小区基站符号 时间长度值与第二阈值的差值, 则终端设置自身对邻居小区基站的干扰类型 为第三干扰类型;
需要说明的是, 所述第一阈值具体为邻居小区基站的接收底噪值, 或者 邻居小区基站的参考灵敏度值, 或者比邻居小区基站的参考灵敏度值高或者 低一定值的信号; 或者邻居小区基站可以容忍的干扰水平值;
所述第二阈值具体为邻居小区基站的循环冗余前缀(Cyc l ic Pref ix , CP ) 对应的时间
所述邻居小区基站符号时间长度值具体为: 在邻居小区基站的时隙子帧 中每个符号所占据的时间长度。
需要说明的是, 所述终端的发射功率 (P-UE ) , 为终端发射功率的估计 值, 例如, 终端在近期内发射功率的统计平均值, 如在最近 10次终端发射功 率的统计平均值, 或者在最近 100ms 内的终端发射功率的统计平均值; 或者 是将终端的发射功率分为多个等级, 根据终端与服务小区基站的远近情况, 确定终端发射功率等级, 每个发射功率等级对应一定的发射功率, 用发射功 率等级所对应的发射功率值来进行干扰估计, 例如, 与服务小区基站距离近 的终端发射功率低, 给予较低的发射功率等级用于干扰估计; 与服务小区基 站距离远的终端发射功率高, 给予较高的发射功率等级用于干扰估计; 或者 根据终端的功率余量报告(Power Headroom Repor t , PHR )来判断, PHR较大 的终端发射功率低, PHR较小的终端发射功率高,据此来设定用于干扰轨迹的 终端发射功率 P-UE。
步骤 720、服务小区基站根据所述载波干扰的类型,将所述终端调度在对 所述邻居小区基站不形成载波干扰的频率范围内。
具体地, 服务小区基站接收终端发送的所述终端对邻居小区基站的干扰 的类型, 根据干扰的类型, 将终端调度在对邻居小区基站不形成载波干扰的 频率范围内;
如果干扰的类型为步骤 710 中描述的第一干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 任意频率范围内;
如果干扰的类型为步骤 710 中描述的第二干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 所述邻居小区基站受保护 频率范围之外的频率范围内;
如果干扰的类型为步骤 71 0中描述的第三干扰类型, 则服务小区基站将 终端调度在所述服务小区基站的工作信道范围内、 所述邻居小区基站受保护 频率范围之外且远离所述邻居受保护频率的频率范围内; 所述将终端调度在 远离邻居小区基站受保护频率范围具体是指: 所述邻居小区基站受保护频率 范围与所述终端调度频率范围之间的距离应大于预先设定的距离阈值, 以使 得终端不会对邻居小区造成干扰。
需要说明的是, 服务小区基站对终端的调度需要考虑终端对一个或者多 个邻居小区基站的干扰类型;
通过应用本发明实施例提供的终端的调度方法, 服务小区基站根据终端 自行判断的干扰的类型, 根据干扰类型不同, 将会对邻居小区基站造成子干 扰的终端调度到远离邻居小区基站的受保护频率的频率范围内, 从而避免了 由于终端达到邻居小区基站的信号超出邻居小区基站可以接受的范围, 而造 成的终端与小区基站间的载波干扰问题。
上述多个实施例描述的方法均可实现服务小区基站对终端的调度, 相应 地, 本发明实施例还提供了一种服务小区基站, 用以实现实施例一中的终端 的调度方法, 如图 8所示, 所述服务小区基站包括: 判断单元 810和调度单 元 820。
判断单元 810, 用于判断终端对邻居小区基站生成干扰的类型, 并将所述 干扰的类型发送给调度单元, 所述邻居小区基站与所述终端的服务小区基站 的工作信道在同一频率范围内或者所述邻居小区基站与所述终端的服务小区 基站的工作信道有部分频率在同一范围内;
调度单元 820,用于接收所述判断单元发送的所述终端对所述邻居小区基 站生成干扰的类型, 根据所述干扰的类型, 将所述终端调度在在所述服务小 区基站的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。
判断单元 810具体用于: 如果所述干扰水平值小于第一阈值, 则设置所 述终端对所述邻居小区基站生成干扰的类型为第一干扰类型, 将所述第一干 扰类型发送给调度单元;
如果所述干扰水平值不小于第一阈值, 且所述传输时延差不大于第二阈 值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第二干扰类型, 将所述第二干扰类型发送给调度单元;
如果所述干扰水平值不小于第一阈值,且所述传输时延差大于第二阈值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第三干扰类型, 将所 述第三干扰类型发送给调度单元。
调度单元 820具体用于: 如果接收所述判断单元发送的第一干扰类型, 则将所述终端调度在所述服务小区基站的工作信道内的任意频率范围内; 如果接收所述判断单元发送的第二干扰类型, 则将所述终端调度在所述 服务小区基站的工作信道内的所述邻居小区基站受保护频率范围之外的频率 范围内; 如果接收所述判断单元发送的第三干扰类型, 则将所述终端调度在所述 服务小区基站的工作信道内的所述邻居小区基站受保护频率范围之外且远离 所述邻居小区基站受保护频率范围的频率范围内。
通过应用本发明实施例提供的服务小区基站, 由判断单元判断终端对邻 居小区基站的干扰类型, 调度单元将会对邻居小区基站造成干扰的终端调度 到在工作信道内远离邻居小区基站的受保护频率范围的频率范围内, 从而避 免了由于终端达到邻居小区基站的信号超出邻居小区基站可以接受的范围, 而造成的终端与小区基站间的载波干扰的问题。
相应地, 本发明实施例还提供了一种服务小区基站, 用以实现实施例二 中的终端的调度方法, 如图 9 所示, 所述服务小区基站包括: 第一获取单元 910、 计算单元 920、 判断单元 810和调度单元 820。
第一获取单元 910 ,用于获取所述终端测量的所述邻居小区基站的参考信 号接收功率 RSRP值和传输时延差, 并将所述参考信号接收功率 RSRP值发送 给计算单元, 将所述传输时延差发送给所述判断单元, 所述传输时延差为所 述服务小区基站向所述终端发送的下行参考信号与所述邻居小区基站向所述 终端发送的下行参考信号的时延差;
计算单元 920,用于接收所述第一获取单元发送的所述参考信号接收功率 RSRP值,根据所述 RSRP值, 计算所述终端对所述邻居小区基站生成干扰的干 扰水平值, 并将所述干扰水平值发送给所述判断单元
所述判断单元 810具体用于: 接收所述计算单元发送干扰水平值, 和所 述第一获取单元发送的所述传输时延差, 利用所述干扰水平值和所述传输时 延差, 判断所述终端对所述邻居小区基站生成干扰的类型。
通过应用本发明实施例提供的服务小区基站, 第一获取单元接收终端发 送的 RSRP值, 计算单元计算终端对所述邻居小区基站生成干扰的干扰水平值 ISD, 判断单元利用计算出的干扰水平值 ISD和终端发送的传输时延差判断终 端对邻居小区基站生成干扰的类型, 调度单元将会对邻居小区基站造成干扰 的终端调度到远离邻居小区基站的不同频率范围内, 避免了由于终端达到邻 居小区基站的信号超出邻居小区基站可以接受的范围, 而造成的终端与小区 基站间的载波干扰的问题。
相应地, 本发明实施例还提供了一种服务小区基站, 用以实现实施例三 中的终端的调度方法, 如图 10所示, 所述服务小区基站包括: 第二获取单元 1010、 判断单元 810和调度单元 820。
第二获取单元 1010, 用于获取所述终端对所述邻居小区基站生成干扰的 干扰水平值和传输时延差, 并将所述干扰水平值和所述传输时延差发送给所 述判断单元;
所述判断单元 820具体用于: 接收所述第一获取单元发送的干扰水平值 和所述传输时延差, 利用所述干扰水平值和所述传输时延差, 判断所述终端 对所述邻居小区基站生成载波干扰的类型。
通过应用本发明实施例提供的终端的服务小区基站, 第二获取单元接收 终端发送的干扰水平值 ISD和传输时延差, 判断单元利用干扰水平值 ISD和 传输时延差判断终端对邻居小区基站生成干扰的类型, 调度单元将会对邻居 小区基站造成干扰的终端调度到远离邻居小区基站的不同频率范围内, 避免 了由于终端达到邻居小区基站的信号超出邻居小区基站可以接受的范围, 而 造成的终端与小区基站间的载波干扰的问题。
相应地, 本发明实施例还提供了一种服务小区基站, 用以实现实施例四 中的终端的调度方法, 如图 11所示, 所述服务小区基站包括: 接收单元 1110 和调度单元 1120。
接收单元 1110, 用于接收终端发送的所述终端对邻居小区基站生成干扰 的类型, 并将所述干扰的类型发送给调度单元, 所述邻居小区基站与所述终 端的服务小区基站的工作信道在同一频率范围内或者所述邻居小区基站与所 述终端的服务小区基站的工作信道有部分频率在同一范围内;
调度单元 1120, 用于接收所述接收单元发送的所述终端对所述邻居小区 基站生成干扰的类型, 根据所述干扰的类型, 将所述终端调度在在所述服务 小区基站的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围 内。
所述调度单元 1120具体用于: 如果接收所述接收单元发送的所述干扰的 类型为第一干扰类型, 则将所述终端调度在所述服务小区基站的工作信道内 的任意频率范围内;
如果接收所述接收单元发送的所述干扰的类型为第二干扰类型, 则将所 述终端调度在所述服务小区基站的工作信道内的所述邻居小区基站受保护频 率范围之外的频率范围内;
如果接收所述接收单元发送的所述干扰的类型为第三干扰类型, 则将所 述终端调度在所述服务小区基站的工作信道内的所述邻居小区基站受保护频 率范围之外且远离所述邻居小区基站受保护频率范围的频率范围内。
通过应用本发明实施例提供的服务小区基站, 接收单元接收终端自行判 断的干扰的类型, 调度单元根据干扰类型不同, 将会对邻居小区基站造成子 干扰的终端调度到远离邻居小区基站的受保护频率的频率范围内, 从而避免 了由于终端达到邻居小区基站的信号超出邻居小区基站可以接受的范围, 而 造成的终端与小区基站间的载波干扰问题。
另外, 本发明实施例提供的一服务小区基站还可以釆用实现方式如下, 用以实现方法实施例中的终端的调度方法, 如图 12所示, 所述服务小区基站 包括: 处理器 1210、 存储器 1220、 接收器 1230。
所述处理器 1210 , 用于判断终端对邻居小区基站生成干扰的类型, 所述 邻居小区基站与所述终端的服务小区基站的工作信道在同一频率范围内或者 所述邻居小区基站与所述服务小区基站的工作信道有部分频率在同一范围 内; 根据所述干扰的类型, 将所述终端调度在所述服务小区基站的工作信道 内的对所述邻居小区基站不形成干扰的部分频率范围内。
存储器 1220 , 用于存储处理器 1210的执行流程。 在一种具体实现方式下, 接收器 1230 , 用于获取所述终端测量的所述邻 居小区基站的参考信号接收功率 RSRP值和传输时延差, 所述传输时延差为所 述服务小区基站向所述终端发送的下行参考信号与所述邻居小区基站向所述 终端发送的下行参考信号的时延差, 并将获取的所述参考信号接收功率 RSRP 值和传输时延差传输至处理器中; 该接收器 1 330可以实现为一个或多个基站 天线。
所述处理器 1210进一步具体用于:根据接收器传输的所述参考信号接收 功率 RSRP值, 计算所述终端对所述邻居小区基站生成干扰的干扰水平值; 所述处理器 1210进一步具体用于: 利用所述干扰水平值和所述传输时延 差, 判断所述终端对所述邻居小区基站生成干扰的类型。
在另一种具体实现方式下, 接收器 1230用于: 获取所述终端对所述邻居 小区基站生成干扰的干扰水平值和传输时延差, 并将获取的所述干扰水平值 和传输时延差传输至处理器中;
所述处理器 1210进一步具体用于: 利用接收器传输的所述干扰水平值和 所述传输时延差, 判断所述终端对所述邻居小区基站生成干扰的类型。
无论以上哪种实现方式,处理器 1210判断干扰类型的步骤可以实现为: : 如果所述干扰水平值小于第一阈值, 则设置所述终端对所述邻居小区基 站生成干扰的类型为第一干扰类型;
如果所述干扰水平值不小于第一阈值, 且所述传输时延差不大于第二阈 值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第二干扰类型; 如果所述干扰水平值不小于第一阈值,且所述传输时延差大于第二阈值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第三干扰类型。
更进一步地, 处理器 1210用于:
如果所述干扰的类型为第一干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的任意频率范围内;
如果所述干扰的类型为第二干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外的频率范围 内;
如果所述干扰的类型为第三干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外且远离所述邻 居小区基站受保护频率范围的频率范围内。
相应地, 本发明实施例提供的另一服务小区基站也可以釆用实现方式如 下, 用以实现方法实施例中的终端的调度方法, 如图 1 3所示, 所述服务小区 基站包括: 处理器 1 31 0、 存储器 1 320、 接收器 1 330。
所述接收器 1 330 , 用于接收终端发送的所述终端对邻居小区基站生成干 扰的类型, 所述邻居小区基站与所述终端的服务小区基站的工作信道在同一 频率范围内或者所述邻居小区基站与所述服务小区基站的工作信道有部分频 率在同一范围内, 并将接收的所述终端对邻居小区基站生成干扰的类型传输 至处理器中; 该接收器 1 330可以实现为一个或多个基站天线。
处理器 1 310 , 用于接收接收器传输的所述终端对所述邻居小区基站生成 干扰的类型, 根据所述干扰的类型, 将所述终端调度在在所述服务小区基站 的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。
存储器 1 320 , 用于存储处理器的执行流程。
处理器 1 310进一步具体用于: 如果所述干扰的类型为第一干扰类型, 则 将所述终端调度在所述服务小区基站的工作信道内的任意频率范围内;
如果所述干扰的类型为第二干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外的频率范围 内;
如果所述干扰的类型为第三干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外且远离所述邻 居小区基站受保护频率范围的频率范围内。
需说明的是, 本发明实施例所述的存储器可以为 U盘、 移动硬盘、 只读 存储器、 随机存取存储器、 磁碟或者光盘等各种可以存储程序代码的介质。 需说明的是, 以上实施例中与前述实施例相同或相似的步骤可以互相借 鉴, 例如第一干扰类型、 第二干扰类型的意义等, 在此不再赘述。
本发明实施例五还提供了一种终端的调度系统, 用以实现上述实施例中 的终端的调度方法及相应的装置, 如图 14所示, 该系统包括终端和服务小区 基站, 所述终端用于向所述服务小区基站发送参考信号接收功率 RSRP值和传 输时延差, 或者干扰水平值和传输时延差, 所述传输时延差为所述服务小区 基站向所述终端发送的下行参考信号与所述邻居小区基站向所述终端发送的 下行参考信号的时延差;
所述服务小区基站用于接收所述终端发送的所述参考信号接收功率 RSRP 值和所述传输时延差, 或者所述干扰水平值和所述传输时延差;
当所述服务小区基站接收所述终端发送的所述参考信号接收功率 RSRP值 和所述传输时延差时,所述服务小区基站根据所述参考信号接收功率 RSRP值, 计算所述终端对所述邻居小区基站生成干扰的干扰水平值, 利用所述干扰水 平值和所述传输时延差, 判断所述终端对所述邻居小区基站生成干扰的类型, 并根据所述干扰的类型, 将所述终端调度在所述服务小区基站的工作信道内 的对所述邻居小区基站不形成干扰的部分频率范围内;
当所述服务小区基站接收所述终端发送的所述干扰水平值和所述传输时 延差时, 所述服务小区基站利用所述干扰水平值和所述传输时延差, 判断所 述终端对所述邻居小区基站生成干扰的类型, 根据所述干扰的类型, 将所述 终端调度在所述服务小区基站的工作信道内的对所述邻居小区基站不形成干 扰的部分频率范围内。
通过应用本发明实施例提供的系统, 服务小区基站利用终端发送的不同 信息判断终端对邻居小区基站的干扰类型, 服务小区基站将会对邻居小区基 站造成干扰的终端调度到在工作信道内远离邻居小区基站的受保护频率范围 的频率范围内, 从而避免了由于终端达到邻居小区基站的信号超出邻居小区 基站可以接受的范围, 而造成的终端与小区基站间的载波干扰的问题。
相应地, 本发明实施例五还提供了一种终端的调度系统, 用以实现上述 实施例中的终端的调度方法及相应的装置, 如图 15所示, 该系统包括终端和 服务小区基站, 所述终端用于将所述终端对邻居小区基站生成的干扰类型发 送至所述服务小区; 所述服务小区基站用于接收所述终端发送的所述终端对 邻居小区基站生成干扰的类型, 根据所述干扰的类型, 将所述终端调度在在 所述服务小区基站的工作信道内的对所述邻居小区基站不形成干扰的部分频 率范围内。
通过应用本发明实施例提供的终端的调度系统, 服务小区基站接收终端 自行判断的干扰的类型, 根据干扰类型不同, 将会对邻居小区基站造成子干 扰的终端调度到远离邻居小区基站的受保护频率的频率范围内, 从而避免了 由于终端达到邻居小区基站的信号超出邻居小区基站可以接受的范围, 而造 成的终端与小区基站间的载波干扰问题。
本说明书中的各个实施例均釆用递进的方式描述, 各个实施例之间相同 相似的部分互相参见即可, 每个实施例重点说明的都是与其他实施例的不同 之处。 尤其, 对于装置及系统实施例而言, 由于其基本相似于方法实施例, 所以描述得比较简单, 相关之处参见方法实施例的部分说明即可。 以上所描 述的装置实施例仅仅是示意性的, 其中所述作为分离部件说明的单元可以是 或者也可以不是物理上分开的, 作为单元显示的部件可以是或者也可以不是 物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以 根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。 本领域普通技术人员在不付出创造性劳动的情况下, 即可以理解并实施。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用 时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的 技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可 以以软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者 网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前述的 存储介质包括: U盘、 移动硬盘、 只读存储器(ROM, Read-Only Memory ) 、 随机存取存储器(RAM, Random Acces s Memory ) 、 磁碟或者光盘等各种可以 存储程序代码的介质。
以上所述的具体实施方式, 对本发明的目的、 技术方案和有益效果进行 了进一步详细说明, 所应理解的是, 以上所述仅为本发明的具体实施方式而 已, 并不用于限定本发明的保护范围, 凡在本发明的精神和原则之内, 所做 的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书 CP12223P
1、 一种终端的调度方法, 其特征在于, 所述方法包括:
判断终端对邻居小区基站生成干扰的类型, 所述邻居小区基站与所述终 端的服务小区基站的工作信道在同一频率范围内或者所述邻居小区基站与所 述服务小区基站的工作信道有部分频率在同一范围内;
根据所述干扰的类型, 将所述终端调度在所述服务小区基站的工作信道 内的对所述邻居小区基站不形成干扰的部分频率范围内。
2、 根据权利要求 1所述的终端的调度方法, 其特征在于, 在所述判断终 端对邻居小区基站生成干扰的类型之前, 所述方法还包括:
获取所述终端测量的所述邻居小区基站的参考信号接收功率 RSRP值和传 输时延差, 所述传输时延差为所述服务小区基站向所述终端发送的下行参考 信号与所述邻居小区基站向所述终端发送的下行参考信号的时延差;
根据所述参考信号接收功率 RSRP值, 计算所述终端对所述邻居小区基站 生成干扰的干扰水平值;
所述判断终端对邻居小区基站生成干扰的类型, 具体包括:
利用所述干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区 基站生成干扰的类型。
3、 根据权利要求 1所述的终端的调度方法, 其特征在于, 在所述判断终 端对邻居小区基站生成干扰的类型之前, 所述方法还包括:
获取所述终端对所述邻居小区基站生成干扰的干扰水平值和传输时延 差;
所述判断终端对邻居小区基站生成干扰的类型, 具体包括:
利用所述干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区 基站生成干扰的类型。
4、 根据权利要求 2或 3所述的终端的调度方法, 其特征在于, 所述利用 所述干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区基站生成 干扰的类型具体为:
如果所述干扰水平值小于第一阈值, 则设置所述终端对所述邻居小区基 站生成干扰的类型为第一干扰类型;
如果所述干扰水平值不小于第一阈值, 且所述传输时延差不大于第二阈 值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第二干扰类型; 如果所述干扰水平值不小于第一阈值, 且所述传输时延差大于第二阈值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第三干扰类型。
5、 根据权利要求 1所述的终端的调度方法, 其特征在于, 所述根据所述 干扰的类型, 将所述终端调度在在所述服务小区基站的工作信道内的对所述 邻居小区基站不形成干扰的部分频率范围内具体为:
如果所述干扰的类型为第一干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的任意频率范围内;
如果所述干扰的类型为第二干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外的频率范围 内;
如果所述干扰的类型为第三干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外且远离所述邻 居小区基站受保护频率范围的频率范围内。
6、 一种终端的调度方法, 其特征在于, 所述方法包括:
接收终端发送的所述终端对邻居小区基站生成干扰的类型, 所述邻居小 区基站与所述终端的服务小区基站的工作信道在同一频率范围内或者所述邻 居小区基站与所述服务小区基站的工作信道有部分频率在同一范围内;
根据所述干扰的类型, 将所述终端调度在在所述服务小区基站的工作信 道内的对所述邻居小区基站不形成干扰的部分频率范围内。
7、 根据权利要求 6所述的终端的调度方法, 其特征在于, 所述根据所述 干扰的类型, 将所述终端调度在在所述服务小区基站的工作信道内的对所述 邻居小区基站不形成干扰的部分频率范围内具体为:
如果所述干扰的类型为第一干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的任意频率范围内;
如果所述干扰的类型为第二干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外的频率范围 内;
如果所述干扰的类型为第三干扰类型, 则将所述终端调度在所述服务小 区基站的工作信道内的所述邻居小区基站受保护频率范围之外且远离所述邻 居小区基站受保护频率范围的频率范围内。
8、 一种服务小区基站, 其特征在于, 所述服务小区基站包括: 判断单元, 用于判断终端对邻居小区基站生成干扰的类型, 并将所述干 扰的类型发送给调度单元, 所述邻居小区基站与所述终端的服务小区基站的 工作信道在同一频率范围内或者所述邻居小区基站与所述服务小区基站的工 作信道有部分频率在同一范围内;
调度单元, 用于接收所述判断单元发送的所述终端对所述邻居小区基站 生成干扰的类型, 根据所述干扰的类型, 将所述终端调度在所述服务小区基 站的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。
9、 根据权利要求 8所述的服务小区基站, 其特征在于, 所述服务小区基 站还包括:
第一获取单元, 用于获取所述终端测量的所述邻居小区基站的参考信号 接收功率 RSRP值和传输时延差, 并将所述参考信号接收功率 RSRP值发送给 计算单元, 将所述传输时延差发送给所述判断单元, 所述传输时延差为所述 服务小区基站向所述终端发送的下行参考信号与所述邻居小区基站向所述终 端发送的下行参考信号的时延差;
计算单元, 用于接收所述第一获取单元发送的所述参考信号接收功率 RSRP值,根据所述 RSRP值, 计算所述终端对所述邻居小区基站生成干扰的干 扰水平值, 并将所述干扰水平值发送给所述判断单元;
所述判断单元具体用于:
接收所述计算单元发送干扰水平值, 和所述第一获取单元发送的所述传 输时延差, 利用所述干扰水平值和所述传输时延差, 判断所述终端对所述邻 居小区基站生成干扰的类型。
10、 根据权利要求 8 所述的服务小区基站, 其特征在于, 所述服务小区 基站还包括:
第二获取单元, 用于获取所述终端对所述邻居小区基站生成干扰的干扰 水平值和传输时延差, 并将所述干扰水平值和所述传输时延差发送给所述判 断单元;
所述判断单元具体用于:
接收所述第一获取单元发送的干扰水平值和所述传输时延差, 利用所述 干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区基站生成载波 干扰的类型。
11、 根据权利要求 8 所述的服务小区基站, 其特征在于, 所述判断单元 进一步具体用于:
如果所述干扰水平值小于第一阈值, 则设置所述终端对所述邻居小区基 站生成干扰的类型为第一干扰类型, 将所述第一干扰类型发送给调度单元; 如果所述干扰水平值不小于第一阈值, 且所述传输时延差不大于第二阈 值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第二干扰类型, 将所述第二干扰类型发送给调度单元;
如果所述干扰水平值不小于第一阈值, 且所述传输时延差大于第二阈值, 则设置所述终端对所述邻居小区基站生成干扰的类型为第三干扰类型, 将所 述第三干扰类型发送给调度单元。
12、 根据权利要求 8 所述的服务小区基站, 其特征在于, 所述调度单元 具体用于: 如果接收所述判断单元发送的第一干扰类型, 则将所述终端调度在所述 服务小区基站的工作信道内的任意频率范围内;
如果接收所述判断单元发送的第二干扰类型, 则将所述终端调度在所述 服务小区基站的工作信道内的所述邻居小区基站受保护频率范围之外的频率 范围内;
如果接收所述判断单元发送的第三干扰类型, 则将所述终端调度在所述 服务小区基站的工作信道内的所述邻居小区基站受保护频率范围之外且远离 所述邻居小区基站受保护频率范围的频率范围内。
1 3、 一种服务小区基站, 其特征在于, 所述服务小区基站包括: 接收单元, 用于接收终端发送的所述终端对邻居小区基站生成干扰的类 型, 并将所述干扰的类型发送给调度单元, 所述邻居小区基站与所述终端的 服务小区基站的工作信道在同一频率范围内或者所述邻居小区基站与所述服 务小区基站的工作信道有部分频率在同一范围内;
调度单元, 用于接收所述接收单元发送的所述终端对所述邻居小区基站 生成干扰的类型, 根据所述干扰的类型, 将所述终端调度在在所述服务小区 基站的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。
14、 根据权利要求 1 3所述的服务小区基站, 其特征在于, 所述调度单元 具体用于:
如果接收所述接收单元发送的所述干扰的类型为第一干扰类型, 则将所 述终端调度在所述服务小区基站的工作信道内的任意频率范围内;
如果接收所述接收单元发送的所述干扰的类型为第二干扰类型, 则将所 述终端调度在所述服务小区基站的工作信道内的所述邻居小区基站受保护频 率范围之外的频率范围内;
如果接收所述接收单元发送的所述干扰的类型为第三干扰类型, 则将所 述终端调度在所述服务小区基站的工作信道内的所述邻居小区基站受保护频 率范围之外且远离所述邻居小区基站受保护频率范围的频率范围内。
15、 一种终端的调度系统, 其特征在于, 所述系统包括终端和服务小区 基站,
所述终端用于: 向所述服务小区基站发送参考信号接收功率 RSRP值和传 输时延差, 或者干扰水平值和传输时延差, 所述传输时延差为所述服务小区 基站向所述终端发送的下行参考信号与所述邻居小区基站向所述终端发送的 下行参考信号的时延差;
所述服务小区基站用于: 接收所述终端发送的所述参考信号接收功率 RSRP值和所述传输时延差, 或者所述干扰水平值和所述传输时延差; 当所述 服务小区基站接收所述终端发送的所述参考信号接收功率 RSRP值和所述传输 时延差时, 所述服务小区基站根据所述参考信号接收功率 RSRP值, 计算所述 终端对所述邻居小区基站生成干扰的干扰水平值, 利用所述干扰水平值和所 述传输时延差, 判断所述终端对所述邻居小区基站生成干扰的类型, 并根据 所述干扰的类型, 将所述终端调度在所述服务小区基站的工作信道内的对所 述邻居小区基站不形成干扰的部分频率范围内; 当所述服务小区基站接收所 述终端发送的所述干扰水平值和所述传输时延差时, 所述服务小区基站利用 所述干扰水平值和所述传输时延差, 判断所述终端对所述邻居小区基站生成 干扰的类型, 根据所述干扰的类型, 将所述终端调度在所述服务小区基站的 工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。
16、 一种终端的调度系统, 其特征在于, 所述系统包括终端和服务小区 基站,
所述终端用于:将所述终端对邻居小区基站生成的干扰类型发送至所述 服务小区;
所述服务小区基站用于:接收所述终端发送的所述终端对邻居小区基站 生成干扰的类型, 根据所述干扰的类型, 将所述终端调度在在所述服务小区 基站的工作信道内的对所述邻居小区基站不形成干扰的部分频率范围内。
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