WO2016074558A1 - 用于移动基站的物理小区标识分配的设备和方法 - Google Patents

用于移动基站的物理小区标识分配的设备和方法 Download PDF

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Publication number
WO2016074558A1
WO2016074558A1 PCT/CN2015/092704 CN2015092704W WO2016074558A1 WO 2016074558 A1 WO2016074558 A1 WO 2016074558A1 CN 2015092704 W CN2015092704 W CN 2015092704W WO 2016074558 A1 WO2016074558 A1 WO 2016074558A1
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WIPO (PCT)
Prior art keywords
base station
pci
mobile base
electronic device
neighboring base
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PCT/CN2015/092704
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English (en)
French (fr)
Inventor
孙晨
陈晋辉
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索尼公司
孙晨
陈晋辉
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Publication date
Application filed by 索尼公司, 孙晨, 陈晋辉 filed Critical 索尼公司
Priority to US15/524,924 priority Critical patent/US10057842B2/en
Priority to EP20180621.3A priority patent/EP3737142A1/en
Priority to EP15859791.4A priority patent/EP3220703B1/en
Publication of WO2016074558A1 publication Critical patent/WO2016074558A1/zh
Priority to US16/041,376 priority patent/US10736023B2/en
Priority to US16/910,256 priority patent/US11051241B2/en
Priority to US17/346,296 priority patent/US11689998B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Definitions

  • the present invention relates to an apparatus and method for PCI allocation of a mobile base station, and more particularly to a mobile base station, a network device for allocating and updating PCI for a mobile base station, and a method for allocating and updating a PCI for a mobile base station.
  • a physical cell identity is typically used to identify each cell, for a total of 504 available PCIs.
  • the cells served by all the base stations in the communication system including the macro cell of the macro base station, the small cell of the small base station, and the relay cell of the relay node, allocate available PCI.
  • the IMT-2020 system's demand vision and related technology reports can be found in the IMT-2020 system.
  • UDN ultra dense networks
  • MN mobile networks
  • the introduction of UDN means that small base stations will be deployed on a large scale in IMT-2020-oriented communication systems, so the number of base stations in the system will far exceed that available in Long Term Evolution/Advanced Long Term Evolution (LTE/LTE-A) systems.
  • LTE/LTE-A Long Term Evolution/Advanced Long Term Evolution
  • PCIs ie, 504).
  • MN mobile base station
  • a mobile base station e.g., a mobile small base station
  • MN mobile base station
  • a PCI has been assigned, a problem arises as to how to allocate PCI to the mobile base station.
  • the mobile base station since the mobile base station experiences different network environments during the mobile process, for example, from a sparse cell area (for example, a suburb) to a dense cell area (for example, an urban area), the PCI of the mobile base station needs to be frequently updated to adapt to the new one. Web environment. In this case, a mechanism for updating the PCI of the mobile base station at a certain time interval is required.
  • a sparse cell area for example, a suburb
  • a dense cell area for example, an urban area
  • a self-organizing network provides a practical and effective solution.
  • SON includes self-configuration, self-optimization, and self-healing.
  • Self-configuration of PCI is included in the self-configuration.
  • the present invention proposes a mobile base station, a method for allocating and updating PCI for a mobile base station, and a network device for allocating and updating PCI for the mobile base station, thereby being able to be at the mobile base station. Reduce and avoid PCI conflicts and confusion during the move, and reduce the manual participation of technicians in the base station configuration, reducing the operating costs of mobile operators.
  • an electronic device for managing a mobile base station comprising: an obtaining unit configured to acquire a location and a moving speed of the mobile base station; and a determining unit configured to respond to the obtaining, based on the Determining an effective time interval of the physical cell identity PCI of the mobile base station by at least one of the location and the moving speed.
  • the electronic device for managing the mobile base station further includes an information collecting unit configured to collect, in response to the determining, information related to network configuration within a predetermined range in which the location of the mobile base station is located when the valid time interval elapses.
  • the electronic device for managing the mobile base station further includes a PCI determining unit configured to multiplex the PCI of one of the one or more neighboring base stations within the predetermined range into a mobile according to the network configuration related information Base station PCI.
  • a method of managing a mobile base station comprising: acquiring a location and a moving speed of a mobile base station; and responding to the obtaining, according to at least one of the location and the moving speed Determining the physical cell identifier PCI of the mobile base station Effective time interval.
  • the method for managing a mobile base station further includes: in response to the determining, collecting network configuration information within a predetermined range in which the location of the mobile base station is located when the valid time interval elapses, and information related to the network configuration And multiplexing the PCI of one of the one or more neighboring base stations in the predetermined range into the PCI of the mobile base station.
  • an electronic device for managing a mobile base station comprising one or more processors configured to perform the above-described method of managing a mobile base station.
  • an electronic device on a mobile base station side including: a determining unit configured to determine a location and a moving speed of the mobile base station; and a PCI determining unit configured to pass through the mobile base station
  • a determining unit configured to determine a location and a moving speed of the mobile base station
  • a PCI determining unit configured to pass through the mobile base station
  • the physical cell identifies an effective time interval of the PCI
  • an updated PCI for the mobile base station is determined, wherein the valid time interval is related to at least one of a location of the mobile base station and a moving speed.
  • an electronic device on a mobile base station side comprising: one or more processors configured to determine a location and a moving speed of the mobile base station, in a physical cell passing through the mobile base station In the case of identifying an effective time interval of the PCI, an updated PCI for the mobile base station is determined, wherein the valid time interval is related to at least one of a location of the mobile base station and a moving speed.
  • FIG. 1 is a schematic diagram showing a case where a mobile base station enters a new geographical area
  • FIG. 2 is a schematic flow chart of updating a PCI of a mobile base station according to the present invention
  • FIG. 3 is a flow chart of allocating PCI for a mobile base station in accordance with the present invention.
  • FIG. 4 is a schematic diagram of a configuration of a network management device and a mobile base station according to a first embodiment of the present invention
  • FIG. 5 is a diagram showing configurations of a network management device and a mobile base station according to a second embodiment of the present invention. schematic diagram;
  • FIG. 6 is a schematic diagram of a configuration of a network management device and a mobile base station according to a third embodiment of the present invention.
  • FIG. 7 is a block diagram showing an example configuration of computer hardware.
  • the communication system for IMT-2020 is a fusion of existing communication systems, so the method for allocating and updating the mobile base station for the IMT-2020 proposed by the present invention should be able to support backward compatibility with the LTE/LTE-A system.
  • the invention can be used at least in communication systems where there are currently only 504 available PCIs.
  • the number of available PCIs may also increase, but at the same time, due to the deployment of ultra-dense small cells and mobile base stations, there may still be a problem of insufficient PCI or the need to update PCI in time.
  • the technical solution in the application will still apply.
  • the PCI of the mobile base station needs to be updated frequently so that when it enters the new network environment, a new PCI can be obtained that is compatible with the new network environment.
  • FIG. 1 is a schematic diagram showing a case where a mobile base station enters a new geographical area.
  • the mobile base station 10 enters an area in which a plurality of base stations 20 have been deployed, wherein the plurality of base stations 20 have been assigned respective PCIs.
  • the network management device 30 can communicate with the mobile base station 10 and the various base stations 20 and obtain information related to the network configuration within a predetermined range of the mobile base station 10 (as indicated by the dotted circle R).
  • the base station 20 shown in FIG. 1 is not limited to being a fixed base station, but may also include other mobile base stations that have previously entered the area. Since a large number of base stations 20 are densely deployed in the area, 504 available PCIs are likely to have been allocated. When the mobile base station 10 enters the area, it may need to multiplex the PCIs of other base stations for it.
  • step S210 the location and speed of the mobile base station 10 at time t are acquired, and are acquired by the network management device 30 within a predetermined range from the mobile base station 10 at time t (as indicated by the dotted circle R in FIG. 1). ) Network configuration related information.
  • step S220 a time interval ⁇ t is determined according to at least one of the acquired position and moving speed of the mobile base station 10, and the PCI of the mobile base station 10 at time t is determined according to the acquired information about the network configuration.
  • the position and speed of the mobile base station 10 and the network configuration in the predetermined range are acquired again. interest. Since the mobile base station 10 continuously moves during the time interval ⁇ t, the network environment may change, and the network configuration related information acquired at the time t+ ⁇ t may be different from the information acquired at the time t, thereby being determined at the time t+ ⁇ t.
  • the PCI of the mobile base station 10 may be different from the PCI determined at time t. It should be noted that the present invention does not exclude the case where the PCI determined at time t + ⁇ t is the same as the PCI determined at time t. In this case, the PCI of the mobile base station 10 will not be updated to a new PCI.
  • the time interval ⁇ t is related to the position of the mobile base station 10.
  • the mobile base station 10 can be placed on a traveling bus that travels in an urban area where a large number of base stations (e.g., small base stations) are deployed.
  • the time interval ⁇ t can be Is set to 1 minute. That is, the mobile base station 10 moves 1 minute (1 km) to update the PCI.
  • the time interval ⁇ t can be set to 30 minutes. That is, the mobile base station 10 moves for 30 minutes (100 kilometers) to update the PCI.
  • the time interval ⁇ t is set to be short.
  • the time interval ⁇ t is set longer. It should be noted that the specific values of the time interval ⁇ t given above are merely exemplary, and the present invention is not intended to limit the concept of the present invention.
  • the time interval ⁇ t can be related to the moving speed of the mobile base station 10.
  • the speed of the mobile base station 10 can indirectly reflect the environmental state in which it is located. For example, when the mobile base station 10 moves at a speed of several tens of kilometers per hour or less, it can be considered to be in an urban area, and when the speed is several hundred kilometers per hour, it can be considered to be in a suburb. Therefore, the time interval ⁇ t can also be set in accordance with the moving speed of the mobile base station 10. Specifically, it is assumed that there is one mobile base station 10, and the mobile base station 10 may move to a different geographical area. When the speed of the mobile base station 10 is large, the time interval ⁇ t can be set to be large, and when the moving speed is small, the time interval ⁇ t can be set to be small.
  • the plurality of mobile base stations 10 when there are a plurality of mobile base stations 10 in, for example, a specific geographical area (for example, an urban area), that is, the plurality of mobile base stations 10 are in the same or similar network environment, it is possible to set a comparison for a mobile base station having a higher moving speed.
  • a small time interval ⁇ t is set, and a large time interval ⁇ t is set for the mobile base station with a small moving speed.
  • the high speed of movement means that the mobile base station can Can quickly get out of the current network environment, enter a new network environment and need to redistribute new PCI.
  • the time interval ⁇ t is set large, the PCI cannot be updated in time, and a situation in which the mobile base station collides with the neighboring base station in a new network environment may occur.
  • determining the time interval ⁇ t based on the moving speed is an optional solution, and the present invention is not limited thereto.
  • the mobile base station 10 In addition, in urban areas, a large number of base stations may be deployed in a small geographical area, resulting in the available PCI being exhausted, so that a relatively small range of network configurations may be considered when allocating PCI to mobile base stations. information.
  • the mobile base station 10 When the mobile base station 10 is in the suburbs (the speed of the mobile base station 10 is often large), information about the network configuration in a relatively large range can be obtained. If the range is set too small, the neighboring base stations may not be included. That is to say, the information about the network configuration in which the wide range is acquired may be related to the location or moving speed at which the mobile base station 10 is located.
  • step S220 of FIG. 2 The process of determining the PCI of the mobile base station based on the obtained network configuration related information in step S220 of FIG. 2 will be specifically described below.
  • FIG. 3 shows a flow chart for allocating PCI to mobile base station 10 based on information related to network configuration.
  • the network configuration related information may include a list of one or more neighboring base stations within a predetermined distance from the mobile base station, and an interference state between the mobile base station and each of the neighboring base stations.
  • the list of neighboring base stations may include: PCI of the neighboring base station, an indication of whether the neighboring base station is in a dormant state, a load of the neighboring base station, and the like.
  • the load of the neighboring base station may be represented by at least one of throughput, amount of cached data to be processed, number of users of the service, traffic volume requiring high quality of service (QoS), and the like. The invention is not limited thereto.
  • the interference state between the mobile base station and the neighboring base station may be represented by at least one of a distance between the mobile base station and the neighboring base station, a transmission model, a path loss, an antenna gain, a transmission power, a receiver sensitivity, and the like.
  • interference can be represented simply by distance or path loss, or by a combination of path loss, transmission power, and antenna gain, which is a technical means known in the art, and therefore will not be described herein.
  • step S310 it is determined in step S310 whether there are unused PCIs in, for example, 504 available PCIs, based on the PCI of the neighboring base stations in the neighboring base station list. If there is an unused PCI (YES in step S310), the process proceeds to step S320, and one of the unused PCIs is allocated to the mobile base station 10. If there is only one unused PCI, the PCI is assigned to the mobile base station 10. Then the process ends.
  • step S310 If there is no unused PCI (NO in step S310), it is indicated that all 504 available PCIs have been used by neighboring base stations, and no redundant PCI can be allocated to the mobile base station 10. Therefore, the mobile base station 10 can only multiplex the PCI of a neighboring base station. At this time, it is determined whether there is a neighboring base station in a sleep state according to the sleep state indication in the neighboring base station list (S330). If there is no neighboring base station in the dormant state (NO in step S330), the process proceeds to step S380, which will be described later.
  • step S340 it is further determined whether the PCI of the sleeping neighboring base station multiplexes the PCI of the other base station. If the result of the determination in step S340 is YES, that is, the PCI of the dormant neighboring base station is also obtained by multiplexing the PCIs of the other base stations, the process proceeds to step S380. If the determined result at step S340 is "NO", it is determined whether the number of sleeping neighboring base stations is one or more (step S350).
  • step S360 the PCI of the neighboring base station is multiplexed to the mobile base station 10 (step S360), and then the process ends. If the result of the determination in step S350 is that there are a plurality of neighboring base stations in a dormant state, the PCI of the neighboring base station that selects the shortest time to enter the sleep (in other words, the remaining sleep time is the longest) is allocated to the mobile base station 10 (step S370), and then the process End. Generally, the longer the base station is in the dormant state, the more likely it is to leave the sleep state in a short time and switch to the active state.
  • the PCI of the neighboring base station that may be activated is not selected.
  • an appropriate dormant base station can be selected by other means. For example, according to the obtained network configuration related information, the sleep state of each neighboring base station, such as a sleep period, an expected wake-up time, and the like, can be known, so that the neighboring base stations that are not activated in a short time can be selected according to the information, and Its PCI is allocated for use by the mobile base station 10.
  • step S380 the process proceeds to a step S380.
  • step S380 the interference value between the mobile base station 10 and each of the neighboring base stations is calculated according to the distance, path loss, antenna gain, transmission power, and the like included in the information related to the network configuration.
  • step S390 the load of the current time of each neighboring base station from the list of neighboring base stations.
  • step S400 for each neighboring base station, the PCI multiplexing factor of the neighboring base station is calculated according to the calculated interference value and the obtained load.
  • the size of the PCI multiplexing factor represents a preferred order for multiplexing PCI of neighboring base stations to the mobile base station 10. That is, a neighboring base station having a larger PCI multiplexing factor is preferentially selected to multiplex its PCI to the mobile base station 10.
  • step S400 will obtain a plurality of calculated PCI multiplexing factors, and then sort the calculated plurality of PCI multiplexing factors from large to small in step S410.
  • the PCI of the neighboring base station corresponding to the largest PCI multiplexing factor is multiplexed into the PCI of the mobile base station 10 in step S420, so that the process ends.
  • DM-RS Demodulation Reference Signal
  • SRS Sounding Reference Signal
  • PUSCH Physical Uplink Shared Channel
  • the modulo 3 interference generated between the jth neighboring base station and the kth mobile base station is defined as I_mod3_k,j, where j ⁇ i
  • mod3(PCI_i) mod3(PCI_k(m)) ⁇ , i is a neighboring base station index of.
  • the result of the modulo 3 operation of the PCI value "6" is zero.
  • the PCI value of the neighboring base station which also obtains a value of 0 after performing the modulo 3 operation may include 0, 3, 6, 9, 12, ..., and the neighboring base stations using these PCI values will generate modulo 3 interference with the kth mobile base station.
  • a set of neighboring base stations using these PCI values is represented by j.
  • the modulo 6 interference generated between the neighboring base station and the kth mobile base station is defined as I_mod6_k,j, where j ⁇ i
  • mod6(PCI_i) mod6(PCI_k(m)) ⁇ , j represents modulo 6 interference.
  • the modulo 30 interference generated between the neighboring base station and the kth mobile base station is defined as I_mod30_k,j, where j ⁇ i
  • mod30(PCI_i) mod30(PCI_k(m)) ⁇ , j represents the proximity of the modulo 30 interference.
  • the modulo 3, modulo 6, and modulo 30 interference described above may be calculated based on the distance between the neighboring base station and the kth mobile base station, path loss, antenna gain, transmission power, receiver sensitivity, and the like.
  • the invention is not limited thereto.
  • the load of neighboring base stations After multiplexing the PCI of a neighboring base station to the mobile base station, the mobile base station is bound to cause interference to the neighboring base station. In this case, neighboring base stations that interfere with heavy loads should be avoided as much as possible. Based on this, the load (eg, throughput, etc.) of neighboring base stations is also considered in the PCI multiplexing criteria of the present invention. Specifically, the PCI of the neighboring base station with a smaller load should be preferentially multiplexed, that is, the PCI reuse factor calculated for the neighboring base station with a smaller load should be larger.
  • Equation (1) gives a method of calculating the PCI multiplexing factor P k(m) based on the interference value and the load of the neighboring base station.
  • m is the PCI value to be multiplexed for the kth mobile base station
  • m 0, 1, 2...503.
  • PCI_i the PCI values of the neighboring base stations may be 0, 1, 2...503, which may be among the 504 PCI values. Any one of them is multiplexed to the kth mobile base station.
  • I_mod3_k, j3 is the modulo 3 interference value
  • I_mod6_k, j6 is the modulo 6 interference value
  • I_mod30_k, and j30 is the modulo 30 interference value.
  • Th j3 is the load of the neighboring base station where modulo 3 interference occurs
  • Th j6 is the load of the neighboring base station where modulo 6 interference occurs
  • Th j30 is the load of the neighboring base station where modulo 30 interference occurs.
  • Equation (1) when m takes a specific value of 0-503, that is, assuming that the specific value is used as the PCI of the mobile base station, it can be obtained in the PCI of 504 neighboring base stations.
  • the modulo 3, modulo 6 or modulo 30 of the value results in the same PCI value and one or more neighboring base stations using these PCI values.
  • the modulo 3 component For example, for the set j3 of neighboring base stations having the same modulo 3 operation result, the reciprocal of the product of the load of each neighboring base station in the set and the interference value is added, and one of the cases considering the modulo 3 interference is obtained.
  • the modulo 3 component the modulo 3 component.
  • the second and third terms of equation (1) show the modulo 6 component and the modulo 30 component, respectively.
  • the weights a3, a6, and a30 may be set for the modulo 3 component, the modulo 6 component, and the modulo 30 component, respectively, depending on the degree of tolerance of the base station to the modulo 3, modulo 6, and modulo 30 interference. Then, the modulo 3 component, the modulo 6 component, and the modulo 30 component are weighted and added, thereby obtaining that when a certain specific value of 0-503 is allocated to the kth mobile base station as PCI (ie, m takes a specific value) PCI reuse factor. It should be noted that the present invention is not limited to the equation (1), and the modification of the equation (1) can be made. For example, the PCI multiplexing factor can be calculated considering only one or both of the modulo 3 component, the modulo 6 component, and the modulo 30 component.
  • the values of a3, a6 and a30 may be in the range of 0-1. If the modulo 3 interference has the most serious impact on the base station and should be avoided as much as possible, the weight a3 can be set to 1. If the influence of the modulo 30 interference is not large, the weight a30 can be set to 0.1. It should be noted that although the value range and the specific value of the weight are given herein, the present invention is not limited thereto, and those skilled in the art may arbitrarily set the weight according to actual needs.
  • the PCI multiplexing factor is inversely proportional to the interference value between the base stations and inversely proportional to the load of the neighboring base stations. Therefore, when a neighboring base station has a large interference to the mobile base station and/or a load of the neighboring base station is large, the calculated PCI multiplexing factor for the neighboring base station is small. Since the PCI of the neighboring base station corresponding to the larger PCI multiplexing factor is preferentially multiplexed to the mobile base station, the PCI of the neighboring base station with larger interference and/or larger load will not be multiplexed to the mobile base station, thereby reducing The adverse effects of PCI multiplexing on mobile base stations and neighboring base stations.
  • the network management device 410 includes an acquisition unit 4110, a time interval determination unit 4120, a network configuration information collection unit 4130, a communication unit 4140, and a PCI determination unit 4150.
  • the obtaining unit 4110 acquires the location of the mobile base station 510, and optionally, the moving speed of the mobile base station 510.
  • the manner of obtaining the location and/or the moving speed of the mobile base station 510 may be, for example, requesting the mobile base station 510 to report by the acquiring unit 4110, or the obtaining unit 4110 may calculate the mobile based on the distance between the two reported locations and the time difference between the two reports.
  • the speed of base station 510 may be, for example, requesting the mobile base station 510 to report by the acquiring unit 4110, or the obtaining unit 4110 may calculate the mobile based on the distance between the two reported locations and the time difference between the two reports. The speed of base station 510.
  • the time interval determining unit 4120 is configured to determine a time interval ⁇ t for updating the PCI of the mobile base station 510 according to at least one of the acquired location and speed of the mobile base station 510. Since the PCI of the mobile base station 510 is updated when the time interval ⁇ t elapses, that is, the effective time of the PCI currently used by the mobile base station 510 is equal to the time interval ⁇ t, the time interval ⁇ t is also referred to as the effective time of the PCI. interval.
  • the network configuration information collecting unit 4130 collects information about the network configuration within a predetermined distance from the mobile base station 510, and the acquisition unit 4110 acquires the location and/or speed of the mobile base station 510 again.
  • the time interval determining unit 4120 determines the next time interval ⁇ t based on the position and/or speed acquired again.
  • the PCI determining unit 4150 is configured to multiplex the PCI of the appropriate neighboring base station into the PCI of the mobile base station 510 according to the collected information about the network configuration.
  • the PCI determining unit 4150 further includes a PCI multiplexing factor calculating unit 4151, a sorting unit 4152, and a multiplexing unit 4153.
  • the PCI multiplexing factor is calculated to obtain a plurality of PCI multiplexing factors.
  • the sorting unit 4152 sorts the obtained plurality of PCI multiplexing factors in descending order.
  • the multiplexing unit 4153 multiplexes the PCI of the neighboring base station corresponding to the largest PCI multiplexing factor to the mobile base station 510, and notifies the mobile base station 510 of the new PCI via the communication unit 4140.
  • the determining unit 5110 of the mobile base station 510 may determine its own position and/or speed by itself and via the communication unit 5120. Reported to the network management device 410.
  • the time interval determining unit 4120 of the network management device 410 determines the effective time interval ⁇ t based on the position and/or speed, and transmits the time interval ⁇ t to the mobile base station 510.
  • the mobile base station 510 reports its current position and/or speed again via the communication unit 5120. In particular, the mobile base station 510 does not have to report the location and/or according to the time interval ⁇ t.
  • the mobile base station 510 can immediately report the changed speed to the network management device 410. Without considering the time interval ⁇ t. In other words, the reporting trigger of the location/speed information by the mobile base station 510 can be period based or event based.
  • FIG. 5 shows a configuration of a network management device 420 and a mobile base station 520 according to a second embodiment of the present invention.
  • the network management device 420 includes an acquisition unit 4210, a time interval determination unit 4220, a network configuration information collection unit 4230, a communication unit 4240, and a network configuration information notification unit 4250.
  • the mobile base station 520 includes a determining unit 5210, a communication unit 5220, and a PCI determining unit 5230.
  • the determining unit 5210 of the mobile base station 520 is configured to determine the location and/or the moving speed of the mobile base station 520, and transmit the determined location and/or moving speed to the acquiring unit 4210 of the network management device 420 via the communication unit 5220.
  • the time interval determining unit 4220 of the network management device 420 determines an effective time interval ⁇ t for updating the PCI of the mobile base station 520 according to the received position and/or speed, and transmits the time interval ⁇ t to the mobile via the communication unit 4240.
  • Base station 520 Base station 520.
  • the network configuration information collecting unit 4230 of the network management device 420 collects information about the network configuration within a predetermined range from the mobile base station 520, and configures the network by the network configuration information notifying unit 4250. The relevant information is notified to the mobile base station 520. Furthermore, when the time interval ⁇ t elapses, the mobile base station 520 again reports its current position or speed.
  • the mobile base station 520 includes a PCI determining unit 5230 for determining which neighboring base station's PCI is multiplexed based on the received network configuration related information.
  • the PCI determining unit 5230 includes a PCI multiplexing factor calculating unit 5231, a sorting unit 5232, and a multiplexing unit 5233.
  • the function of the PCI multiplexing factor calculation unit 5231 is substantially the same as that of the PCI multiplexing factor calculation unit 4151 of the network management device 410 in the first embodiment, that is, is scheduled for the mobile base station 520 according to the information about the received network configuration.
  • the PCI multiplexing factor is calculated from the PCI of each neighboring base station within the distance, thereby obtaining a plurality of PCI multiplexing factors. Then, the sorted units 5232 sort the obtained PCI multiplexing factors from large to small, and the multiplexing unit 5233 multiplexes the PCIs of the neighboring base stations corresponding to the largest PCI multiplexing factor into the PCI of the mobile base station 520, and The new PCI is notified to the network management device 420 via the communication unit 5220.
  • FIG. 6 shows a configuration of a network management device 430 mobile base station 530 according to a third embodiment of the present invention.
  • the network management device 430 includes an obtaining unit 4310, and a time interval.
  • the determining unit 4320, the network configuration information collecting unit 4330, the communication unit 4340, and the network configuration information notifying unit 4350 are the same as those of the corresponding components shown in FIG. 5, and thus are not described herein again.
  • the mobile base station 530 includes a determining unit 5310 and a communication unit 5320, and these components have the same functions as those of the corresponding components shown in FIG. 5, and will not be described again.
  • the differences between the third embodiment and the second embodiment will be mainly described below.
  • the mobile base station 530 includes a PCI determining unit 5330.
  • the PCI determining unit 5330 includes a PCI multiplexing factor calculating unit 5331, a sorting unit 5332, and a PCI candidate list generating unit 5333.
  • the PCI multiplexing factor calculation unit 5331 calculates a PCI multiplexing factor for the PCI of each neighboring base station based on the network configuration information received by the communication unit 5320 from the network management device 430, thereby obtaining a plurality of PCI multiplexing factors.
  • the sorting unit 5332 sorts the obtained PCI multiplexing factors in descending order.
  • the PCI candidate list generating unit 5333 generates a PCI candidate list based on a plurality of PCI multiplexing factors arranged in descending order, the PCI candidate list including PCIs of a plurality of neighboring base stations corresponding to a plurality of PCI multiplexing factors arranged in descending order.
  • the PCI of the neighboring base station corresponding to the larger PCI multiplexing factor is preferentially selected for multiplexing. Therefore, in the PCI candidate list, the PCI of the neighboring base station whose position is earlier is more likely to be multiplexed to the mobile base station 530. Then, the generated PCI candidate list is transmitted to the network management device 430 via the communication unit 5320.
  • the PCI multiplexing unit 4360 in the network management device 430 multiplexes the PCI of the neighboring base station at the foremost position in the PCI candidate list to the mobile base station 530, and notifies the mobile station to the mobile base station via the communication unit 4340. 530.
  • this article assumes that there is more than one mobile base station entering a new network environment and the need to multiplex the PCI of the neighboring base station.
  • the PCI candidate lists they generate are likely to be the same.
  • the network management device 430 allocates the PCI of the neighboring base station corresponding to the larger PCI multiplexing factor to the mobile base station in which the moving speed is small, and will associate with the smaller PCI multiplexing factor.
  • the PCI of the base station is allocated to the mobile base station with a large moving speed.
  • a mobile base station that moves slowly may stay in the network environment for a long time, and its interference effect on neighboring base stations is relatively long, so that a better PCI is allocated to it (ie, to neighboring base stations). Less interference, or affecting neighboring base stations with smaller loads).
  • a mobile base station that moves faster may leave the network environment very quickly, and the generated interference duration is relatively short, so that a poor PCI is allocated to it.
  • the network management device determines the effective time interval ⁇ t for updating the PCI according to at least one of the location and the speed of the mobile base station, but the function of determining the time interval may also be performed by the mobile base station. To be done.
  • the mobile base station determines its own position and/or moving speed, determines the time interval ⁇ t based on the position and/or speed, and transmits the determined time interval ⁇ t to the network management device through the communication unit, so that the network
  • the management device can acquire information about the network configuration after the time interval ⁇ t.
  • the PCI of the mobile base station may be updated by the network management device or by the mobile base station based on the network configuration related information.
  • the mobile base station again determines the next time interval ⁇ t according to its position and/or speed after the time interval ⁇ t has elapsed.
  • the present invention provides a method for managing a PCI of a mobile base station, including determining a PCI effective time interval according to at least one of a location and a moving speed of the mobile base station, and collecting a predetermined range in the vicinity of the mobile base station when the PCI effective time interval is passed
  • the network configuration is related information, and according to the information about the network configuration, the PCI of one of the neighboring base stations within the predetermined range is multiplexed into the PCI of the mobile base station.
  • the present invention also provides an electronic device for managing PCI of a mobile base station, comprising one or more processors for performing the above method.
  • the present invention provides an electronic device on a mobile base station side, comprising: one or more processors configured to perform: determining a location and a moving speed of the mobile base station, and determining when passing the PCI valid time interval An updated PCI of the mobile base station, wherein the effective time interval is related to at least one of a location of the mobile base station and a moving speed.
  • each device or component described herein is only in a logical sense and does not strictly correspond to a physical device or component.
  • the functionality of each component described herein may be implemented by multiple physical entities, or the functionality of the various components described herein may be implemented by a single physical entity.
  • each device or component in the above embodiments may be implemented by software, hardware, or a combination of software and hardware.
  • the program included in the software may be stored in advance in, for example, a storage medium provided inside or outside each device or component.
  • these programs are written to random access memory (RAM) and executed by a processor (eg, a CPU).
  • FIG. 7 is a block diagram showing an example configuration of computer hardware that executes the above-described series of processes in accordance with a program.
  • a central processing unit (CPU) 701 a read only memory (ROM) 702 And random access memories (RAM) 703 are connected to each other through a bus 704.
  • CPU central processing unit
  • ROM read only memory
  • RAM random access memories
  • Input/output interface 705 is further coupled to bus 704.
  • the input/output interface 705 is connected to an input unit 706 formed by a keyboard, a mouse, a microphone, or the like; an output unit 707 formed of a display, a speaker, or the like; a storage unit 708 formed of a hard disk, a nonvolatile memory, or the like;
  • a communication unit 709 formed of a network interface card (such as a local area network (LAN) card, a modem, etc.); and a drive 710 that drives the removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
  • LAN local area network
  • the CPU 701 loads the program stored in the storage unit 708 into the RAM 703 via the input/output interface 705 and the bus 704, and executes the program to execute the series of processes described above.
  • a program to be executed by a computer (CPU 701) may be recorded on a removable medium 711 as a package medium such as a magnetic disk (including a floppy disk), an optical disk (including a compact disk-read only memory (CD-ROM)), A digital versatile disc (DVD) or the like, a magneto-optical disc, or a semiconductor memory is formed. Further, a program to be executed by a computer (CPU 701) can also be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.
  • a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.
  • the program can be installed in the storage unit 708 via the input/output interface 705.
  • the program can be received by the communication unit 709 via a wired or wireless transmission medium, and the program is installed in the storage unit 708.
  • the program may be pre-installed in the ROM 702 or the storage unit 708.
  • the program to be executed by the computer may be a program that performs processing in accordance with the order described in this specification, or may be a program that executes processing in parallel or performs processing when needed, such as when called.
  • the present invention can also be configured as follows.
  • An electronic device for managing a mobile base station comprising:
  • An acquisition unit configured to obtain a location and a moving speed of the mobile base station
  • a determining unit configured to determine an effective time interval of the physical cell identity PCI of the mobile base station based on at least one of the location and the moving speed in response to the obtaining.
  • the electronic device of (1) further comprising an information collecting unit configured to, in response to the determining, collect a network configuration within a predetermined range in which the location of the mobile base station is located when the valid time interval elapses Relevant information for determining the PCI of the mobile base station.
  • the electronic device further comprising a network configuration notifying unit configured to transmit information related to a network configuration within a predetermined range in which the location of the mobile base station is located to the mobile base station.
  • the network configuration related information comprises: a PCI of one or more neighboring base stations within a predetermined distance from the mobile base station, and at least One: an interference state between the mobile base station and each neighboring base station and a load of the one or more neighboring base stations.
  • the electronic device of (5) further comprising a PCI determining unit configured to determine a PCI for the mobile base station based on information about a network configuration within a predetermined range in which the location of the mobile base station is located.
  • the PCI determining unit is further configured to multiplex the PCI of one of the one or more neighboring base stations into one according to the information about the network configuration The PCI of the mobile base station.
  • a PCI multiplexing factor calculation unit configured to calculate a PCI multiplexing factor for a PCI of each neighboring base station according to an interference state between the mobile base station and each neighboring base station and a load of the neighboring base station;
  • a multiplexing unit configured to multiplex the PCI of the neighboring base station corresponding to the largest PCI multiplexing factor into the PCI of the mobile base station.
  • the electronic device of (7) wherein, when there are at least two mobile base stations that are in close proximity to each other to be allocated a PCI, the multiplexing unit will correspond to a larger PCI multiplexing factor
  • the PCI multiplex of the neighboring base station is a PCI of the mobile base station with a smaller moving speed among the at least two mobile base stations, and the PCI of the neighboring base station corresponding to the smaller PCI multiplex factor is multiplexed into a moving speed.
  • the PCI of the mobile base station is a PCI of the mobile base station with a smaller moving speed among the at least two mobile base stations.
  • a method of managing a mobile base station comprising:
  • the network configuration related information comprises: a physical cell identifier PCI of one or more neighboring base stations within a predetermined distance from the mobile base station, the mobile base station and each Interference status between neighboring base stations, and the one or more neighbors The load of the base station.
  • the multiplexing step comprises: a PCI for each neighboring base station according to an interference state between the mobile base station and each neighboring base station and a load of the neighboring base station
  • the PCI multiplexing factor is calculated, and the calculated one or more PCI multiplexing factors are arranged in descending order, and the PCI of the neighboring base station corresponding to the largest PCI multiplexing factor is multiplexed into the PCI of the mobile base station.
  • An electronic device for managing a mobile base station comprising: one or more processors configured to acquire a location and a moving speed of the mobile base station; and responsive to the obtaining, according to the location and the moving speed And determining at least one of the effective time intervals of the physical cell identifier PCI of the mobile base station.
  • the electronic device of (23), the one or more processors are further configured to, in response to the determining, collect a predetermined range in which the location of the mobile base station is located when the valid time interval elapses
  • the information about the network configuration within the network configuration, and the PCI of one of the neighboring base stations in the predetermined range is multiplexed into the PCI of the mobile base station according to the information about the network configuration.
  • An electronic device on a mobile base station side comprising:
  • a determining unit configured to determine a location and a moving speed of the mobile base station
  • a PCI determining unit configured to determine an updated PCI for the mobile base station if an effective time interval of the physical cell identifier PCI of the mobile base station is passed
  • the effective time interval is related to at least one of a location of the mobile base station and a moving speed.
  • a communication unit configured to, when the valid time interval elapses, transmit the determined location of the mobile base station to a network management device, and receive, within the predetermined range in which the location of the mobile base station is located, from the network management device Information about network configuration,
  • the PCI determining unit determines the updated PCI based on the network configuration related information.
  • a PCI multiplexing factor calculation unit configured to calculate, according to the received information about the network configuration, a physical cell identifier PCI of each neighboring base station in a one or more neighboring base stations within a predetermined distance from the mobile base station PCI reuse factor;
  • a multiplexing unit configured to multiplex the PCI of the neighboring base station corresponding to the largest PCI multiplexing factor into the updated PCI for the mobile base station.
  • a PCI multiplexing factor calculation unit configured to calculate, according to the received information about the network configuration, a physical cell identifier PCI of each neighboring base station in a one or more neighboring base stations within a predetermined distance from the mobile base station PCI reuse factor;
  • a PCI candidate list generating unit configured to generate a PCI candidate list based on the calculated one or more PCI multiplexing factors arranged in descending order, the PCI candidate list including one or more PCI multiplexing factors corresponding to the descending order PCI of one or more neighboring base stations,
  • the communication unit sends the PCI candidate list to the network management device to request allocation of a PCI
  • the PCI determining unit uses the PCI allocated by the network management device as an updated PCI for the mobile base station.
  • the electronic device of (26), wherein the network configuration related information comprises: a PCI of the one or more neighboring base stations, and at least one of: the mobile base station and each of the neighboring base stations The interference state between the two and the load of the one or more neighboring base stations.
  • An electronic device on a mobile base station side comprising:
  • One or more processors configured to:
  • the effective time interval is related to at least one of a location of the mobile base station and a moving speed.

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Abstract

公开了一种用于移动基站的物理小区标识PCI分配的设备和方法。该设备包括：获取单元，配置为获取移动基站的位置和移动速度；确定单元，配置为基于所述位置和所述移动速度中的至少一个来确定所述移动基站的PCI的有效时间间隔；信息收集单元，配置为在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息；以及PCI确定单元，被配置为基于所述移动基站的位置所在的预定范围内的网络配置有关的信息为所述移动基站确定PCI。

Description

用于移动基站的物理小区标识分配的设备和方法 技术领域
本发明涉及一种用于移动基站的PCI分配的设备和方法，更具体地，涉及一种移动基站，为移动基站分配和更新PCI的网络设备，以及为移动基站分配和更新PCI的方法。
背景技术
在LTE/LTE-A系统中，通常采用物理小区标识(PCI)来标识各个小区，总共有504个可用的PCI。根据一定的准则，对通信系统中所有的基站服务的小区，包括宏基站的宏小区、小基站的小小区(small cell)以及中继节点的中继小区，来分配可用的PCI。
目前，根据国际电信联盟(ITU)和构建2020年信息社会的无线移动通信关键技术(METIS)关于IMT-2020系统的需求愿景以及相关技术的报告可以得知，在IMT-2020系统中，引入了超密集网络(UDN)以及移动网络(MN)的概念。UDN的引入意味着在面向IMT-2020的通信系统中将会大规模部署小基站，因此系统中基站的数量将会远远超过长期演进/高级长期演进(LTE/LTE-A)系统中可用的PCI数量(即，504个)。另一方面，小基站的部署一般不是经过事先规划的，其部署的数量以及部署位置往往是随机的，这就导致IMT-2020通信系统的网络状况随着地理位置的不同将会发生很大的变化。MN的引入意味着在基站固定不动的传统通信系统中出现了移动基站(例如移动的小基站)，当移动基站移动进入新的地理区域，并且在该地理区域中已经存在一个或多个基站(已被分配有PCI)时，将产生如何为该移动基站分配PCI的问题。
由于面向IMT-2020的通信系统的网络状况随地理位置而变化以及移动基站在移动过程中所处网络环境不断变化，如果对于移动基站的PCI分配不当，将会在该移动基站所处位置附近的地理区域内出现PCI的冲突和混淆。
现有的PCI分配技术通常针对位置固定的基站，而没有考虑移动基站穿过一片密集小区区域的情况。在密集小区区域中，由于大量基站的存 在，504个可用的PCI往往是不够的。因此在对进入该区域的移动基站分配PCI时往往不可避免地需要复用邻近基站的PCI，而PCI复用会导致使用相同PCI的两个小区之间产生干扰。对具有高负载的小区和具有低负载的小区产生干扰对于网络整体性能的影响是不同的。因此，需要一种有效的为移动基站分配PCI的方法，使得将因复用PCI而产生的干扰的影响减到最小。
另一方面，由于移动基站在移动过程中会经历不同的网络环境，例如从稀疏小区区域(例如郊区)进入密集小区区域(例如城区)，因此移动基站的PCI需要被经常更新，以适应新的网络环境。在此情况下，需要一种以一定时间间隔来更新移动基站的PCI的机制。
发明内容
为了有效地管理数量众多以及随机部署的小基站，自组织网络(SON)提供了一种切实有效的解决方案。SON包括自配置、自优化和自治愈。自配置中包括了PCI的自配置。为了SON自配置中PCI自配置过程的增强和完善，本发明提出了一种移动基站、为移动基站分配和更新PCI的方法以及为移动基站分配和更新PCI的网络设备，由此可以在移动基站移动的过程中减少和避免PCI的冲突和混淆，以及减少技术人员对于基站配置的人工参与，降低了移动运营商的运营成本。
根据本发明的一个方面，提供了一种用于管理移动基站的电子设备，包括：获取单元，配置为获取移动基站的位置和移动速度；以及确定单元，配置为响应于所述获取，基于所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有效时间间隔。
用于管理移动基站的电子设备还包括信息收集单元，配置为响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息。
用于管理移动基站的电子设备还包括PCI确定单元，被配置为根据所述网络配置有关的信息，将所述预定范围内的一个或多个邻近基站中的一个邻近基站的PCI复用为移动基站的PCI。
根据本发明的另一方面，提供了一种管理移动基站的方法，包括：获取移动基站的位置和移动速度；以及响应于所述获取，根据所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有 效时间间隔。
管理移动基站的方法还包括：响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息，以及根据所述网络配置有关的信息，将所述预定范围内的一个或多个邻近基站中的一个邻近基站的PCI复用为移动基站的PCI。
根据本发明的另一方面，提供了一种用于管理移动基站的电子设备，包括配置为执行上述管理移动基站的方法的一个或多个处理器。
根据本发明的又一方面，提供了一种移动基站侧的电子设备，包括：确定单元，配置为确定所述移动基站的位置和移动速度；PCI确定单元，配置为在经过所述移动基站的物理小区标识PCI的有效时间间隔的情况下，确定用于所述移动基站的更新的PCI，其中，所述有效时间间隔与所述移动基站的位置以及移动速度中至少之一相关。
根据本发明的又一方面，提供了一种移动基站侧的电子设备，包括：一个或多个处理器，配置为确定所述移动基站的位置和移动速度，在经过所述移动基站的物理小区标识PCI的有效时间间隔的情况下，确定用于所述移动基站的更新的PCI，其中，所述有效时间间隔与所述移动基站的位置以及移动速度中至少之一相关。
附图说明
可以通过参考下文中结合附图所给出的描述来更好地理解本发明，其中在所有附图中使用了相同或相似的附图标记来表示相同或者相似的部件。附图连同下面的详细说明一起包含在本说明书中并且形成本说明书的一部分，而且用来进一步说明本发明的优选实施例和解释本发明的原理和优点。在附图中：
图1是示出了移动基站进入新的地理区域中的情况的示意图；
图2是根据本发明的更新移动基站的PCI的流程示意图；
图3是根据本发明的为移动基站分配PCI的流程图；
图4是根据本发明第一实施例的网络管理设备和移动基站的配置的示意图；
图5是根据本发明第二实施例的网络管理设备和移动基站的配置的 示意图；
图6是根据本发明第三实施例的网络管理设备和移动基站的配置的示意图；以及
图7是示出了计算机硬件的示例配置的框图。
具体实施方式
面向IMT-2020的通信系统是对现有通信系统的融合，所以本发明提出的面向IMT-2020的移动基站的PCI分配和更新方法应能够支持对LTE/LTE-A系统的后向兼容，因此本发明至少可以用于当前仅有可用PCI的数目为504个的通信系统中。此外，随着通信技术的演进，可用PCI的数目也可能会增长，但与此同时由于超密集小小区以及移动基站的部署，仍然会存在PCI不足或者需要及时更新PCI的问题，届时，本发明中的技术方案仍将适用。
由于移动基站的移动性，其可能进入不同的地理区域，从而经历不同的网络环境。因此移动基站的PCI需要经常更新，以便当其进入新的网络环境时，能够获得与新的网络环境相适应的新的PCI。
图1是示出了移动基站进入新的地理区域中的情况的示意图。如图1所示，移动基站10进入已经部署了多个基站20的区域，其中该多个基站20已被分配了各自的PCI。网络管理设备30可以与移动基站10以及各个基站20通信，并且获得距移动基站10预定范围内(如虚线圈R所示)的网络配置相关的信息。需要说明的是，图1所示的基站20不限于是固定基站，而是也可以包括先前进入该区域的其它移动基站。由于在该区域中密集地部署了大量基站20，因此504个可用的PCI很可能已被分配完。当移动基站10进入该区域时，可能需要为其复用其他基站的PCI。
图2示出了根据本发明的以一定时间间隔更新移动基站的PCI的流程图。如图2所示，在步骤S210，获取移动基站10在时刻t的位置和速度，并且由网络管理设备30获取在时刻t距移动基站10预定范围内(如图1中的虚线圈R所示)的网络配置有关的信息。然后在步骤S220，根据所获取的移动基站10的位置和移动速度中的至少一个来确定时间间隔△t，以及根据所获取的网络配置有关的信息来确定移动基站10在t时刻的PCI。然后，在经过所确定的时间间隔△t之后，即，在时刻t+△t，再次获取移动基站10的位置和速度以及预定范围内的网络配置有关的信 息。由于移动基站10在时间间隔△t期间持续移动，因此网络环境可能发生变化，在时刻t+△t获取的网络配置有关的信息可能不同于在时刻t获取的信息，从而在时刻t+△t确定的移动基站10的PCI可能不同于在时刻t确定的PCI。需要说明的是，本发明不排除在时刻t+△t确定的PCI与在时刻t确定的PCI相同的情况。在这种情况下，移动基站10的PCI将不被更新为新的PCI。
以下将描述确定时间间隔△t的准则。首先，时间间隔△t与移动基站10的位置有关。例如，移动基站10可以被设置在行驶的公共汽车上，公共汽车在周围部署有大量基站(例如，小基站)的城区中行驶，假定行驶速度为60千米/小时，则时间间隔△t可以被设置为1分钟。也就是说，移动基站10移动1分钟(1千米)更新一次PCI。假设移动基站10被设置在高速列车上，列车在郊区行驶，行驶速度可高达200千米/小时，此时可以将时间间隔△t设置为30分钟。也就是说，移动基站10移动30分钟(100千米)更新一次PCI。
由于城区中基站密集，网络环境在较小的地理尺度上即可能发生较大的改变，因此需要较频繁地更新移动基站10的PCI，以便适应于快速改变的网络环境。相应地，时间间隔△t被设置得较短。而郊区中部署的基站较少，且主要是覆盖范围较大的宏基站，因此网络环境在较大的地理尺度上才发生改变，因此不必频繁地更新移动基站10的PCI，相应地，时间间隔△t被设置得较长。需要说明的是，以上给出的时间间隔△t的具体取值仅是示例性的，为了说明本发明的概念，并不意图限制本发明。
其次，时间间隔△t可以与移动基站10的移动速度有关。对于单个移动基站10来说，移动基站10的速度快慢可以间接反映其所处的环境状态。例如，当移动基站10的移动速度为几十千米/小时或更低时，可以认为其处于城区，当速度为几百千米/小时时，可以认为其处于郊区。因此，也可以根据移动基站10的移动速度来设定时间间隔△t。具体地，假设存在一个移动基站10，并且该移动基站10可能移动至不同的地理区域。当移动基站10的速度较大时，时间间隔△t可被设置为较大，当移动速度较小时，时间间隔△t可被设置为较小。
另一方面，当在例如特定地理区域(例如城区)中存在多个移动基站10，即该多个移动基站10处于相同或类似的网络环境中时，可以为移动速度较大的移动基站设置较小的时间间隔△t，而为移动速度较小的移动基站设置较大的时间间隔△t。这是因为移动速度大意味着该移动基站可 能较快地脱离当前的网络环境，进入新的网络环境并且需要重新分配新的PCI。在此情况下，如果时间间隔△t被设置地较大，PCI不能被及时更新，可能会发生该移动基站在新的网络环境中与邻近基站发生PCI冲突的情况。
需要说明的是，基于移动速度来确定时间间隔△t是一种可选的方案，本发明不限于此。
此外，在城区中，可能在很小的地理区域中就部署了大量的基站，从而导致可用的PCI被用尽，所以在为移动基站分配PCI时可以考虑相对较小范围内的网络配置有关的信息。而当移动基站10处于郊区时(此时移动基站10的速度往往较大)，可以获取相对较大范围内的网络配置有关的信息，此时如果范围设置得太小，可能无法包括邻近基站。也就是说，获取多大范围内的网络配置有关的信息可以与移动基站10所处的位置或者移动速度有关。
以下将具体描述图2的步骤S220中根据所获得的网络配置有关信息来确定移动基站的PCI的过程。
图3示出了根据网络配置有关的信息来为移动基站10分配PCI的流程图。网络配置有关的信息可以包括：距移动基站预定距离以内的一个或多个邻近基站的列表，以及移动基站与各个邻近基站之间的干扰状态。
邻近基站的列表可以包括：邻近基站的PCI，邻近基站是否处于休眠状态的指示，邻近基站的负载等等。其中，邻近基站的负载可以由以下中的至少一个来表示：吞吐量，待处理的缓存数据量、服务的用户数目、服务质量(QoS)要求高的业务量等等。本发明不限于此。
移动基站与邻近基站之间的干扰状态可以由以下中的至少一个来表示：移动基站与邻近基站之间的距离、传输模型、路径损耗、天线增益、传输功率、接收机灵敏度等等。例如，可以简单地以距离或路径损耗，或者以路径损耗、传输功率和天线增益的组合来表示干扰，这是本领域已知的技术手段，故在此不再赘述。
首先，在步骤S310根据邻近基站列表中的邻近基站的PCI来确定在例如504个可用的PCI中是否存在未被使用的PCI。如果存在未被使用的PCI(步骤S310“是”)，则过程进行至步骤S320，将未被使用的PCI中的一个PCI分配给移动基站10。如果仅有一个未被使用的PCI，则将该PCI分配给移动基站10。然后过程结束。
如果不存在未被使用的PCI(步骤S310“否”)，说明所有504个可用的PCI都已被邻近基站使用，没有多余的PCI可以分配给移动基站10。因此，移动基站10只能复用某一邻近基站的PCI。此时，根据邻近基站列表中的休眠状态指示来确定是否存在处于休眠状态的邻近基站(S330)。如果不存在处于休眠状态的邻近基站(步骤S330“否”)，过程将进行至步骤S380，稍后将对其进行描述。如果存在处于休眠状态的邻近基站(步骤S330“是”)，则进一步确定休眠的邻近基站的PCI是否复用了其它基站的PCI(步骤S340)。如果步骤S340的确定结果为“是”，即，该休眠的邻近基站的PCI也是通过复用其它基站的PCI而获得，则过程进行至步骤S380。如果步骤S340的确定结果为“否”，则确定休眠的邻近基站的数目是一个还是多个(步骤S350)。如果仅存在一个处于休眠状态的邻近基站，则将该邻近基站的PCI复用给移动基站10(步骤S360)，然后过程结束。如果步骤S350的确定结果是存在多个处于休眠状态的邻近基站，则选择进入休眠的时间最短(换言之，剩余休眠时间最长)的邻近基站的PCI分配给移动基站10(步骤S370)，然后过程结束。通常来说，基站处于休眠状态的时间越长，越有可能在短时间内脱离休眠状态，转为激活状态，因此，为了减少干扰，不选择复用有可能即将激活的邻近基站的PCI。替代地，也可以通过其它方式来选择适当的休眠基站。例如，根据获取的网络配置有关的信息可以得知各个邻近基站的休眠状态，如休眠周期，预计的醒来时间等，因此可以根据这些信息来选择短时间内不会激活的邻近基站，并将其PCI分配给移动基站10使用。
在步骤S330的结果为“否”以及步骤S340的结果为“是”的情况下，过程进行至步骤S380。这意味着移动基站10必须要复用激活的邻近基站的PCI。在步骤S380，根据网络配置有关的信息中包括的距离、路径损耗、天线增益、传输功率等来计算移动基站10与各个邻近基站之间的干扰值。然后过程进行至步骤S390，从邻近基站的列表中获得每个邻近基站当前时刻的负载。然后，在步骤S400，针对每个邻近基站，根据所计算的干扰值和所获得的负载来计算该邻近基站的PCI复用因子。PCI复用因子的大小表示了将邻近基站的PCI复用给移动基站10的优选顺序。也就是说，优先选择具有较大的PCI复用因子的邻近基站，以将其PCI复用给移动基站10。在存在多个邻近基站的情况下，步骤S400将得到多个计算的PCI复用因子，然后在步骤S410对所计算的多个PCI复用因子由大到小进行排序。在步骤S420将与最大的PCI复用因子相对应的邻近基站的PCI复用为移动基站10的PCI，从而过程结束。
以下具体描述PCI复用因子的计算方法。
当在504个可用的PCI中选择两个不同的PCI作为两个基站的PCI时，如果这两个不同的PCI分别进行模运算后产生的数值相同，那么这两个基站就会彼此产生干扰。根据不同模运算产生不同的干扰。在LTE网络中，如果两个不同的PCI分别进行模3运算后产生的值相同，那么就会造成主同步信号(P-SS)的干扰；如果进行模6运算后产生的值相同，会造成下行链路参考信号(RS)的干扰。此外，在物理上行链路共享信道(PUSCH)中携带了解调参考信号(DM-RS)和探测参考信号(SRS)的信息，这两个参考信号对于解调和信道估计非常重要。如果两个不同的PCI进行模30运算后产生的值相同，那么会造成DM-RS和SRS的干扰。因此，在对移动基站10复用现有邻近基站的PCI时，如果移动基站10选用的PCI与邻近基站的PCI分别进行模3、模6或模30运算后产生相同的数值，那么在移动基站10与该邻近基站之间会产生干扰。
本发明提出了基于以上模3、模6或模30干扰以及邻近小区的负载来计算PCI复用因子的方法。具体来说，为了不失一般性，假设有不止一个移动基站进入新的网络环境，并且在该网络环境内，不存在未被使用的PCI(意味着例如504个可用的PCI已被用尽)，也不存在可供复用的休眠基站的PCI。以第k个移动基站为例，以PCI_k(m)来表示要对其分配的PCI值，其中m＝0,1,2…503，这意味着504个可用的PCI都是潜在可复用的PCI。此外，定义第j个邻近基站与该第k个移动基站之间产生的模3干扰为I_mod3_k,j，其中jε{i|mod3(PCI_i)＝mod3(PCI_k(m))}，i是邻近基站的索引。
假设要对第k个移动基站复用PCI值“6”(即PCI_k(6))，那么PCI值“6”进行模3运算后的结果是0。进行模3运算后也得到0值的邻近基站的PCI值可以包括0,3,6,9,12……，使用这些PCI值的邻近基站将与第k个移动基站产生模3干扰。由j来表示使用这些PCI值的邻近基站的集合。
类似地，定义邻近基站与第k个移动基站之间产生的模6干扰为I_mod6_k,j,其中jε{i|mod6(PCI_i)＝mod6(PCI_k(m))}，j表示产生模6干扰的邻近基站的集合。此外，定义邻近基站与第k个移动基站之间产生的模30干扰为I_mod30_k,j,其中jε{i|mod30(PCI_i)＝mod30(PCI_k(m))}，j表示产生模30干扰的邻近基站的集合。
以上所述的模3、模6以及模30干扰可以基于邻近基站与第k个移动基站之间的距离、路径损耗、天线增益、传输功率以及接收机灵敏度等等来计算。本发明不限于此。
另一方面，考虑邻近基站的负载。在对移动基站复用某一邻近基站的PCI后，移动基站势必会对该邻近基站产生干扰。在此情况下，应尽量避免干扰负载重的邻近基站。基于此，本发明的PCI复用准则中也考虑了邻近基站的负载(例如，吞吐量等)。具体来说，应当优先复用负载较小的邻近基站的PCI，也就是说，对于负载较小的邻近基站计算的PCI复用因子应当较大。
以下等式(1)给出了根据干扰值和邻近基站的负载来计算PCI复用因子Pk(m)的方法。
Figure PCTCN2015092704-appb-000001
其中m是将要为第k个移动基站复用的PCI值，m＝0,1,2…503。如上所述，假设在网络环境中504个可用的PCI都已被使用，也就是说，邻近基站的PCI值(PCI_i)可以为0,1,2…503，可以将该504个PCI值中的任一个复用给第k个移动基站。j3∈{i|mod3(PCI_i)＝mod3(PCI_k(m))}表示与第k个移动基站发生模3干扰的邻近基站的集合，j6∈{i|mod6(PCI_i)＝mod6(PCI_k(m))}表示与第k个移动基站发生模6干扰的邻近基站的集合，j30∈{i|mod30(PCI_i)＝mod30(PCI_k(m))}表示与第k个移动基站发生模30干扰的邻近基站的集合。I_mod3_k,j3是模3干扰值，I_mod6_k,j6是模6干扰值，I_mod30_k,j30是模30干扰值。Thj3是发生模3干扰的邻近基站的负载，Thj6是发生模6干扰的邻近基站的负载，Thj30是发生模30干扰的邻近基站的负载。
由等式(1)可以看出，当m取0-503中的一个特定值时，即，假设将该特定值作为移动基站的PCI时，可以在504个邻近基站的PCI中得到与该特定值的模3、模6或模30运算结果相同的PCI值，以及使用这 些PCI值的一个或多个邻近基站。例如，对于模3运算结果相同的邻近基站的集合j3来说，将集合内每个邻近基站的负载与干扰值的乘积的倒数相加，得到在考虑模3干扰的情况下的一项
Figure PCTCN2015092704-appb-000002
以下称之为模3分量。类似地，等式(1)的第二、三项分别示出了模6分量和模30分量。
根据基站对于模3、模6以及模30干扰的容忍程度，可以对于模3分量、模6分量以及模30分量分别设置权值a3，a6以及a30。然后，对模3分量、模6分量以及模30分量进行加权相加，从而得到在对第k个移动基站分配了0-503中的某一特定值作为PCI(即，m取特定值)时的PCI复用因子。需要说明的是，本发明不限于等式(1)，可以对等式(1)进行修改。例如，可以仅考虑模3分量、模6分量以及模30分量中的任意一个或两个来计算PCI复用因子。
此外，a3，a6和a30的值可以在0-1的范围内。如果模3干扰对于基站的影响最严重，应该尽量避免，则可以将权值a3设置为1。如果模30干扰带来的影响不大，则可将权值a30设置为0.1。需要说明的是，虽然此处给出了权值的取值范围以及具体取值，但本发明不限于此，本领域技术人员可以根据实际需求来任意设置权值。
如上所述，等式(1)已经给出了在m取特定值时计算PCI复用因子的方法。由于m＝0,1,2…503，因此依次计算在m的每种取值情况下的PCI复用因子，从而可以得到504个PCI复用因子。然后将得到的PCI复用因子从大到小进行降序排列，选择与最大的PCI复用因子相对应的m值作为移动基站的PCI，也就是说，将与最大的PCI复用因子相对应的邻近基站的PCI复用为第k个移动基站的PCI。
由以上等式(1)可以看出，PCI复用因子与基站之间的干扰值成反比，并且与邻近基站的负载成反比。因此，当某一邻近基站对移动基站的干扰较大，和/或该邻近基站的负载较大时，针对该邻近基站所计算的PCI复用因子较小。由于优先选择与较大PCI复用因子相对应的邻近基站的PCI复用给移动基站，所以干扰较大和/或负载较大的邻近基站的PCI将不会被复用给移动基站，从而减小了PCI的复用给移动基站和邻近基站带来的不利影响。
以下将结合图4来描述根据本发明的第一实施例的网络管理设备410 和移动基站510的配置。如图4所示,网络管理设备410包括获取单元4110、时间间隔确定单元4120、网络配置信息收集单元4130、通信单元4140以及PCI确定单元4150。
获取单元4110获取移动基站510的位置，并且可选地，也可以获取移动基站510的移动速度。获取移动基站510的位置和/或移动速度的方式例如可以是由获取单元4110请求移动基站510报告，或者获取单元4110根据两次报告的位置之间的距离以及两次报告的时间差来计算出移动基站510的速度。
时间间隔确定单元4120用于根据所获取的移动基站510的位置和速度中的至少一个来确定用于更新移动基站510的PCI的时间间隔△t。由于在经过时间间隔△t时更新移动基站510的PCI，也就是说，移动基站510当前使用的PCI的有效时间等于该时间间隔△t，因此该时间间隔△t也被称为PCI的有效时间间隔。当经过所确定的有效时间间隔△t时，网络配置信息收集单元4130收集距移动基站510预定距离内的网络配置有关的信息，并且同时获取单元4110再次获取移动基站510的位置和/或速度，以便时间间隔确定单元4120根据再次获取的位置和/或速度来确定下一时间间隔△t。
PCI确定单元4150用于根据所收集的网络配置有关的信息，将适当的邻近基站的PCI复用为移动基站510的PCI。PCI确定单元4150进一步包括PCI复用因子计算单元4151、排序单元4152和复用单元4153。PCI复用因子计算单元4151根据移动基站510与邻近基站之间的干扰值以及邻近基站的负载，针对每个邻近基站的PCI(即，如上所述的m＝0,1,2…503)分别计算PCI复用因子，从而得到多个PCI复用因子。排序单元4152将得到的多个PCI复用因子按照从大到小的顺序进行排序。复用单元4153将与最大的PCI复用因子相对应的邻近基站的PCI复用给移动基站510，并经由通信单元4140将该新的PCI通知给移动基站510。
可选地，替代于由网络管理设备410的获取单元4110获取移动基站510的位置和/或速度，可以由移动基站510的确定单元5110自行确定自身的位置和/或速度，并经由通信单元5120报告给网络管理设备410。网络管理设备410的时间间隔确定单元4120根据该位置和/或速度来确定有效时间间隔△t，并将该时间间隔△t发送给移动基站510。当经过该时间间隔△t时，移动基站510经由通信单元5120再次报告它当时的位置和/或速度。特别地，移动基站510并不必须按照时间间隔△t来报告位置和/ 或速度。当发生特定事件时，例如当移动基站510的确定单元5110确定自身的移动速度发生明显变化时(例如，速度变化超过预定阈值时)，移动基站510可立即将变化的速度报告给网络管理设备410，而无需考虑时间间隔△t。换言之，移动基站510对位置/速度信息的上报触发可以是基于周期的或者基于事件的。
图5示出了根据本发明的第二实施例的网络管理设备420和移动基站520的配置。如图4所示,网络管理设备420包括获取单元4210、时间间隔确定单元4220、网络配置信息收集单元4230、通信单元4240以及网络配置信息通知单元4250。移动基站520包括确定单元5210，通信单元5220，以及PCI确定单元5230。
移动基站520的确定单元5210用于确定移动基站520的位置和/或移动速度，并且经由通信单元5220将所确定的位置和/或移动速度发送给网络管理设备420的获取单元4210。网络管理设备420的时间间隔确定单元4220根据接收到的位置和/或速度来确定用于更新移动基站520的PCI的有效时间间隔△t，并且经由通信单元4240将该时间间隔△t发送给移动基站520。当经过所确定的有效时间间隔△t时，网络管理设备420的网络配置信息收集单元4230收集距移动基站520预定范围内的网络配置有关的信息，并且由网络配置信息通知单元4250将该网络配置有关的信息通知给移动基站520。此外，在经过该时间间隔△t时，移动基站520也再次报告自身当时的位置或速度。
与第一实施例不同，根据第二实施例的移动基站520包括PCI确定单元5230，其用于基于所接收到的网络配置有关的信息来确定复用哪个邻近基站的PCI。具体来说，PCI确定单元5230包括PCI复用因子计算单元5231、排序单元5232以及复用单元5233。PCI复用因子计算单元5231的功能与第一实施例中网络管理设备410的PCI复用因子计算单元4151的功能基本相同，即，根据接收到的网络配置有关的信息，针对距移动基站520预定距离以内的每个邻近基站的PCI来计算PCI复用因子，从而得到多个PCI复用因子。然后由排序单元5232对所得到的PCI复用因子从大到小进行排序，由复用单元5233将与最大的PCI复用因子相对应的邻近基站的PCI复用为移动基站520的PCI，并经由通信单元5220将该新的PCI通知给网络管理设备420。
图6示出了根据本发明第三实施例的网络管理设备430移动基站530的配置。如图6所示，网络管理设备430包括获取单元4310、时间间隔 确定单元4320、网络配置信息收集单元4330、通信单元4340以及网络配置信息通知单元4350，这些组件与图5所示的相应组件的功能相同，故在此不再赘述。移动基站530包括确定单元5310和通信单元5320，这些组件与图5所示的相应组件的功能相同，也不再赘述。以下将主要描述第三实施例与第二实施例的区别之处。
如图6所示，移动基站530包括PCI确定单元5330。PCI确定单元5330包括PCI复用因子计算单元5331，排序单元5332以及PCI候选列表生成单元5333。
PCI复用因子计算单元5331根据由通信单元5320从网络管理设备430接收到的网络配置有关的信息，针对每个邻近基站的PCI来计算PCI复用因子，从而得到多个PCI复用因子。排序单元5332对所得到的PCI复用因子进行降序排列。PCI候选列表生成单元5333基于降序排列的多个PCI复用因子来生成PCI候选列表，该PCI候选列表包括与降序排列的多个PCI复用因子相对应的多个邻近基站的PCI。如上所述，优先选择与较大PCI复用因子对应的邻近基站的PCI来进行复用，因此，在PCI候选列表中，位置越前的邻近基站的PCI越有可能被复用给移动基站530。然后，经由通信单元5320将所生成的PCI候选列表发送给网络管理设备430。网络管理设备430中的PCI复用单元4360将优先选择该PCI候选列表中处于最前位置处的邻近基站的PCI来复用给移动基站530，并通过通信单元4340将该新的PCI通知给移动基站530。
如上所述，本文假设了有不止一个移动基站进入新的网络环境，并且需要复用邻近基站的PCI的情况。当存在至少两个彼此位置接近的移动基站需要复用PCI时，它们所生成的PCI候选列表很有可能相同。在此情况下，网络管理设备430将与较大的PCI复用因子相对应的邻近基站的PCI分配给其中移动速度较小的移动基站，并且将与较小的PCI复用因子相对应的邻近基站的PCI分配给移动速度较大的移动基站。这是因为移动较慢的移动基站有可能较长时间地停留在该网络环境中，其对于邻近基站的干扰影响持续时间相对较长，因此对其分配较优的PCI(即，对邻近基站的干扰较小，或是影响负载较小的邻近基站)。而移动较快的移动基站有可能很快离开该网络环境，产生的干扰持续时间相对较短，因此对其分配较差的PCI。
以上已经通过具体实施例描述了本发明，但应理解的是，本发明并不限于以上实施例。可以通过各个实施例中的组件或步骤的替换或组合来对 实施例进行修改。例如，以上第一至第三实施例中描述了由网络管理设备根据移动基站的位置和速度中的至少一个来确定更新PCI的有效时间间隔△t，但该确定时间间隔的功能也可由移动基站来完成。也就是说，移动基站确定自身的位置和/或移动速度，基于该位置和/或速度来确定时间间隔△t，并通过通信单元将所确定的时间间隔△t发送至网络管理设备，使得网络管理设备能够在经过时间间隔△t之后获取网络配置有关的信息。此后，如第一至第三实施例所描述的，可以由网络管理设备或者由移动基站根据该网络配置有关的信息来更新移动基站的PCI。另一方面，移动基站在经过该时间间隔△t之后也再次根据自身的位置和/或速度来确定下一个时间间隔△t。
本发明提供了一种管理移动基站的PCI的方法，包括根据移动基站的位置和移动速度中的至少一个来确定PCI有效时间间隔，在经过该PCI有效时间间隔时收集移动基站附近预定范围内的网络配置有关的信息，并且根据该网络配置有关的信息，将预定范围内的邻近基站之一的PCI复用为移动基站的PCI。此外，本发明还提供了用于管理移动基站的PCI的电子设备，其包括用于执行上述方法的一个或多个处理器。
另一方面，本发明提供了一种移动基站侧的电子设备，包括配置为执行以下处理的一个或多个处理器：确定移动基站的位置和移动速度，以及在经过PCI有效时间间隔时确定用于该移动基站的更新的PCI，其中，该有效时间间隔与移动基站的位置以及移动速度中至少之一相关。
需要说明的是，本文中所描述的各个设备或组件仅是逻辑意义上的，并不严格对应于物理设备或组件。例如，本文所描述的每个组件的功能可能由多个物理实体来实现，或者，本文所描述的多个组件的功能可能由单个物理实体来实现。
在上述实施例中由每个设备或组件执行的一系列处理可以由软件、硬件或者软件和硬件的组合来实现。包括在软件中的程序可以事先存储在例如每个设备或组件的内部或外部所设置的存储介质中。作为一个示例，在执行期间，这些程序被写入随机存取存储器(RAM)并且由处理器(例如CPU)来执行。
图7是示出了根据程序执行上述系列处理的计算机硬件的示例配置框图。
在计算机中，中央处理单元(CPU)701、只读存储器(ROM)702 以及随机存取存储器(RAM)703通过总线704彼此连接。
输入/输出接口705进一步与总线704连接。输入/输出接口705连接有以下组件：以键盘、鼠标、麦克风等形成的输入单元706；以显示器、扬声器等形成的输出单元707；以硬盘、非易失性存储器等形成的存储单元708；以网络接口卡(诸如局域网(LAN)卡、调制解调器等)形成的通信单元709；以及驱动移动介质711的驱动器710，该移动介质711诸如是磁盘、光盘、磁光盘或半导体存储器。
在具有上述结构的计算机中，CPU 701将存储在存储单元708中的程序经由输入/输出接口705和总线704加载到RAM 703中，并且执行该程序，以便执行上述系列处理。
要由计算机(CPU 701)执行的程序可以被记录在作为封装介质的移动介质711上，该封装介质以例如磁盘(包括软盘)、光盘(包括压缩光盘-只读存储器(CD-ROM))、数字多功能光盘(DVD)等)、磁光盘、或半导体存储器来形成。此外，要由计算机(CPU 701)执行的程序也可以经由诸如局域网、因特网、或数字卫星广播的有线或无线传输介质来提供。
当移动介质711安装在驱动器710中时，可以将程序经由输入/输出接口705安装在存储单元708中。另外，可以经由有线或无线传输介质由通信单元709来接收程序，并且将程序安装在存储单元708中。可替选地，可以将程序预先安装在ROM 702或存储单元708中。
要由计算机执行的程序可以是根据本说明书中描述的顺序来执行处理的程序，或者可以是并行地执行处理或当需要时(诸如，当调用时)执行处理的程序。
以上已经结合附图详细描述了本发明的实施例以及技术效果，但是本发明的范围不限于此。本领域普通技术人员应该理解的是，取决于设计要求和其他因素，在不偏离本发明的原理和精神的情况下，可以对本文中所讨论的实施方式进行各种修改或变化。本发明的范围由所附权利要求或其等同方案来限定。
此外，本发明也可以被配置如下。
(1)一种用于管理移动基站的电子设备，包括：
获取单元，配置为获取移动基站的位置和移动速度；以及
确定单元，配置为响应于所述获取，基于所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有效时间间隔。
(2)根据(1)所述的电子设备，还包括信息收集单元，配置为响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息，以用于确定所述移动基站的PCI。
(3)根据(2)所述的电子设备，还包括网络配置通知单元，配置为将所述移动基站的位置所在的预定范围内的网络配置有关的信息发送至所述移动基站。
(4)根据(1)所述的电子设备，其中，所述获取单元进一步配置为在经过所述有效时间间隔时再次获取所述移动基站的位置和移动速度。
(5)根据(2)或(3)所述的电子设备，其中，所述网络配置有关的信息包括：距所述移动基站预定距离以内的一个或多个邻近基站的PCI，以及以下至少之一：所述移动基站与各个邻近基站之间的干扰状态以及所述一个或多个邻近基站的负载。
(6)根据(5)所述的电子设备，还包括PCI确定单元，被配置为基于所述移动基站的位置所在的预定范围内的网络配置有关的信息为所述移动基站确定PCI。
(7)根据(6)所述的电子设备，所述PCI确定单元还被配置为根据所述网络配置有关的信息，将所述一个或多个邻近基站中的一个邻近基站的PCI复用为所述移动基站的PCI。
(8)根据(7)所述的电子设备，其中，所述PCI确定单元包括：
PCI复用因子计算单元，配置为根据所述移动基站与各个邻近基站之间的干扰状态以及所述邻近基站的负载，针对每个邻近基站的PCI计算PCI复用因子；以及
复用单元，配置为将与最大的PCI复用因子相对应的邻近基站的PCI复用为所述移动基站的PCI。
(9)根据(7)所述的电子设备，其中，所述一个或多个邻近基站之中与所述移动基站的干扰较小的特定邻近基站的PCI对应于较大的PCI复用因子。
(10)根据(7)所述的电子设备，其中，所述一个或多个邻近基站之中负载较小的特定邻近基站的PCI对应于较大的PCI复用因子。
(11)根据(7)所述的电子设备，其中，当存在至少两个彼此位置接近的移动基站待分配PCI的情况下，所述复用单元将与较大的PCI复用因子相对应的邻近基站的PCI复用为所述至少两个移动基站当中移动速度较小的移动基站的PCI，并且将与较小的PCI复用因子相对应的邻近基站的PCI复用为移动速度较大的移动基站的PCI。
(12)根据(7)所述的电子设备，其中，当所述一个或多个邻近基站包括处于休眠的一个或多个邻近基站时，所述PCI复用单元将休眠时间最短的邻近基站的PCI复用为所述移动基站的PCI。
(13)根据(1)所述的电子设备，其中，当所述移动基站的移动速度较大时，确定的所述时间间隔较小。
(14)根据(1)所述的电子设备，其中，当所述移动基站附近存在较多数量的邻近基站时，确定的所述时间间隔较小。
(15)根据(5)所述的电子设备，其中，当所述移动基站的移动速度较大时，所述预定距离较大。
(16)根据(5)所述的电子设备，其中，当所述移动基站附近存在较多数量的邻近基站时，所述预定距离较小。
(17)一种管理移动基站的方法，包括：
获取移动基站的位置和移动速度；以及
响应于所述获取，根据所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有效时间间隔。
(18)根据(17)所述的方法，还包括：
响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息，以及
根据所述网络配置有关的信息，将所述预定范围内的一个或多个邻近基站中的一个邻近基站的PCI复用为移动基站的PCI。
(19)根据(17)所述的方法，还包括：在经过所述时间间隔时再次获取所述移动基站的当前位置和移动速度。
(20)根据(18)所述的方法，其中，所述网络配置有关的信息包括：距所述移动基站预定距离以内的一个或多个邻近基站的物理小区标识PCI，所述移动基站与各个邻近基站之间的干扰状态，以及所述一个或多个邻近 基站的负载。
(21)根据(18)所述的方法，还包括：根据所述网络配置有关的信息，将所述一个或多个邻近基站中的一个邻近基站的PCI复用为所述移动基站的PCI。
(22)根据(21)所述的方法，其中，所述复用步骤包括：根据所述移动基站与各个邻近基站之间的干扰状态以及所述邻近基站的负载，针对每个邻近基站的PCI计算PCI复用因子，以降序排列所计算的一个或多个PCI复用因子，将与最大的PCI复用因子相对应的邻近基站的PCI复用为所述移动基站的PCI。
(23)一种用于管理移动基站的电子设备，包括：一个或多个处理器，配置为获取移动基站的位置和移动速度；以及响应于所述获取，根据所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有效时间间隔。
(24)根据(23)所述的电子设备，所述一个或多个处理器还配置为：响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息，以及根据所述网络配置有关的信息，将所述预定范围内的一个或多个邻近基站中的一个邻近基站的PCI复用为所述移动基站的PCI。
(25)一种移动基站侧的电子设备，包括：
确定单元，配置为确定所述移动基站的位置和移动速度；
PCI确定单元，配置为在经过所述移动基站的物理小区标识PCI的有效时间间隔的情况下，确定用于所述移动基站的更新的PCI，
其中，所述有效时间间隔与所述移动基站的位置以及移动速度中至少之一相关。
(26)根据(25)所述的电子设备，还包括：
通信单元，配置为在经过所述有效时间间隔时，将所确定的所述移动基站的位置发送到网络管理设备，并且从所述网络管理设备接收所述移动基站的位置所在的预定范围内的网络配置有关的信息，
其中，所述PCI确定单元基于所述网络配置有关的信息确定所述更新的PCI。
(27)根据(26)所述的电子设备，其中，所述PCI确定单元包括：
PCI复用因子计算单元，配置为根据接收到的所述网络配置有关的信息，针对距所述移动基站预定距离以内的一个或多个邻近基站中的每个邻近基站的物理小区标识PCI来计算PCI复用因子；以及，
复用单元，配置为将与最大的PCI复用因子相对应的邻近基站的PCI复用为用于所述移动基站的更新的PCI。
(28)根据(26)所述的电子设备，其中，所述PCI确定单元包括：
PCI复用因子计算单元，配置为根据接收到的所述网络配置有关的信息，针对距所述移动基站预定距离以内的一个或多个邻近基站中的每个邻近基站的物理小区标识PCI来计算PCI复用因子；以及
PCI候选列表生成单元，配置为基于降序排列的所计算的一个或多个PCI复用因子，来生成PCI候选列表，所述PCI候选列表包括与降序排列的一个或多个PCI复用因子相对应的一个或多个邻近基站的PCI,
其中，所述通信单元将所述PCI候选列表发送到所述网络管理设备，以请求分配PCI，
其中，所述PCI确定单元将所述网络管理设备分配的PCI作为用于所述移动基站的更新的PCI。
(29)根据(26)所述的电子设备，其中，所述网络配置有关的信息包括：所述一个或多个邻近基站的PCI，以及以下至少之一：所述移动基站与各个邻近基站之间的干扰状态以及所述一个或多个邻近基站的负载。
(30)一种移动基站侧的电子设备，包括：
一个或多个处理器，配置为：
确定所述移动基站的位置和移动速度；
在经过所述移动基站的物理小区标识PCI的有效时间间隔的情况下，确定用于所述移动基站的更新的PCI，
其中，所述有效时间间隔与所述移动基站的位置以及移动速度中至少之一相关。

Claims (26)

  1. 一种用于管理移动基站的电子设备，包括：
    获取单元，配置为获取移动基站的位置和移动速度；以及
    确定单元，配置为响应于所述获取，基于所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有效时间间隔。
  2. 根据权利要求1所述的电子设备，还包括信息收集单元，配置为响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息，以用于确定所述移动基站的PCI。
  3. 根据权利要求2所述的电子设备，还包括网络配置通知单元，配置为将所述移动基站的位置所在的预定范围内的网络配置有关的信息发送至所述移动基站。
  4. 根据权利要求1所述的电子设备，其中，所述获取单元进一步配置为在经过所述有效时间间隔时再次获取所述移动基站的位置和移动速度。
  5. 根据权利要求2或3所述的电子设备，其中，所述网络配置有关的信息包括：距所述移动基站预定距离以内的一个或多个邻近基站的PCI，以及以下至少之一：所述移动基站与各个邻近基站之间的干扰状态以及所述一个或多个邻近基站的负载。
  6. 根据权利要求5所述的电子设备，还包括PCI确定单元，被配置为基于所述移动基站的位置所在的预定范围内的网络配置有关的信息为所述移动基站确定PCI。
  7. 根据权利要求6所述的电子设备，所述PCI确定单元还被配置为根据所述网络配置有关的信息，将所述一个或多个邻近基站中的一个邻近基站的PCI复用为所述移动基站的PCI。
  8. 根据权利要求7所述的电子设备，其中，所述PCI确定单元包括：
    PCI复用因子计算单元，配置为根据所述移动基站与各个邻近基站之 间的干扰状态以及所述邻近基站的负载，针对每个邻近基站的PCI计算PCI复用因子；以及
    复用单元，配置为将与最大的PCI复用因子相对应的邻近基站的PCI复用为所述移动基站的PCI。
  9. 根据权利要求7所述的电子设备，其中，所述一个或多个邻近基站之中与所述移动基站的干扰较小的特定邻近基站的PCI对应于较大的PCI复用因子。
  10. 根据权利要求7所述的电子设备，其中，所述一个或多个邻近基站之中负载较小的特定邻近基站的PCI对应于较大的PCI复用因子。
  11. 根据权利要求7所述的电子设备，其中，当存在至少两个彼此位置接近的移动基站待分配PCI的情况下，所述复用单元将与较大的PCI复用因子相对应的邻近基站的PCI复用为所述至少两个移动基站当中移动速度较小的移动基站的PCI，并且将与较小的PCI复用因子相对应的邻近基站的PCI复用为移动速度较大的移动基站的PCI。
  12. 根据权利要求7所述的电子设备，其中，当所述一个或多个邻近基站包括处于休眠的一个或多个邻近基站时，所述PCI复用单元将休眠时间最短的邻近基站的PCI复用为所述移动基站的PCI。
  13. 根据权利要求1所述的电子设备，其中，当所述移动基站的移动速度较大时，确定的所述时间间隔较小。
  14. 根据权利要求1所述的电子设备，其中，当所述移动基站附近存在较多数量的邻近基站时，确定的所述时间间隔较小。
  15. 根据权利要求5所述的电子设备，其中，当所述移动基站的移动速度较大时，所述预定距离较大。
  16. 根据权利要求5所述的电子设备，其中，当所述移动基站附近存在较多数量的邻近基站时，所述预定距离较小。
  17. 一种管理移动基站的方法，包括：
    获取移动基站的位置和移动速度；以及
    响应于所述获取，根据所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有效时间间隔。
  18. 根据权利要求17所述的方法，还包括：
    响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息，以及
    根据所述网络配置有关的信息，将所述预定范围内的一个或多个邻近基站中的一个邻近基站的PCI复用为移动基站的PCI。
  19. 一种用于管理移动基站的电子设备，包括：
    一个或多个处理器，配置为
    获取移动基站的位置和移动速度；以及
    响应于所述获取，根据所述位置和所述移动速度中的至少一个来确定所述移动基站的物理小区标识PCI的有效时间间隔。
  20. 根据权利要求19所述的电子设备，所述一个或多个处理器还配置为：
    响应于所述确定，在经过所述有效时间间隔时收集所述移动基站的位置所在的预定范围内的网络配置有关的信息，以及
    根据所述网络配置有关的信息，将所述预定范围内的一个或多个邻近基站中的一个邻近基站的PCI复用为所述移动基站的PCI。
  21. 一种移动基站侧的电子设备，包括：
    确定单元，配置为确定所述移动基站的位置和移动速度；
    PCI确定单元，配置为在经过所述移动基站的物理小区标识PCI的有效时间间隔的情况下，确定用于所述移动基站的更新的PCI，
    其中，所述有效时间间隔与所述移动基站的位置以及移动速度中至少之一相关。
  22. 根据权利要求21所述的电子设备，还包括：
    通信单元，配置为在经过所述有效时间间隔时，将所确定的所述移动基站的位置发送到网络管理设备，并且从所述网络管理设备接收所述移动基站的位置所在的预定范围内的网络配置有关的信息，
    其中，所述PCI确定单元基于所述网络配置有关的信息确定所述更新的PCI。
  23. 根据权利要求22所述的电子设备，其中，所述PCI确定单元包括：
    PCI复用因子计算单元，配置为根据接收到的所述网络配置有关的信息，针对距所述移动基站预定距离以内的一个或多个邻近基站中的每个邻近基站的物理小区标识PCI来计算PCI复用因子；以及，
    复用单元，配置为将与最大的PCI复用因子相对应的邻近基站的PCI复用为用于所述移动基站的更新的PCI。
  24. 根据权利要求22所述的电子设备，其中，所述PCI确定单元包括：
    PCI复用因子计算单元，配置为根据接收到的所述网络配置有关的信息，针对距所述移动基站预定距离以内的一个或多个邻近基站中的每个邻近基站的物理小区标识PCI来计算PCI复用因子；以及
    PCI候选列表生成单元，配置为基于降序排列的所计算的一个或多个PCI复用因子，来生成PCI候选列表，所述PCI候选列表包括与降序排列的一个或多个PCI复用因子相对应的一个或多个邻近基站的PCI,
    其中，所述通信单元将所述PCI候选列表发送到所述网络管理设备，以请求分配PCI，
    其中，所述PCI确定单元将所述网络管理设备分配的PCI作为用于所述移动基站的更新的PCI。
  25. 根据权利要求22所述的电子设备，其中，所述网络配置有关的信息包括：所述一个或多个邻近基站的PCI，以及以下至少之一：所述移动基站与各个邻近基站之间的干扰状态以及所述一个或多个邻近基站的负载。
  26. 一种移动基站侧的电子设备，包括：
    一个或多个处理器，配置为：
    确定所述移动基站的位置和移动速度；
    在经过所述移动基站的物理小区标识PCI的有效时间间隔的情况下，确定用于所述移动基站的更新的PCI，
    其中，所述有效时间间隔与所述移动基站的位置以及移动速度中至少之一相关。
PCT/CN2015/092704 2014-11-14 2015-10-23 用于移动基站的物理小区标识分配的设备和方法 WO2016074558A1 (zh)

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US10736023B2 (en) 2020-08-04
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US10057842B2 (en) 2018-08-21
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US11689998B2 (en) 2023-06-27
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