WO2010051706A1 - 小区物理地址的分配方法和基站 - Google Patents
小区物理地址的分配方法和基站 Download PDFInfo
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- WO2010051706A1 WO2010051706A1 PCT/CN2009/073151 CN2009073151W WO2010051706A1 WO 2010051706 A1 WO2010051706 A1 WO 2010051706A1 CN 2009073151 W CN2009073151 W CN 2009073151W WO 2010051706 A1 WO2010051706 A1 WO 2010051706A1
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- WIPO (PCT)
- Prior art keywords
- cell
- physical address
- base station
- target
- point information
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
Definitions
- the present invention relates to the field of communications, and in particular to a method and a base station for allocating a physical address of a cell.
- LTE Long Term Evolution
- eNBs evolved base stations
- a self-organizing network Self Organizing
- SON Network, the concept of the cylinder called SON). It is a mobile communication network that can automatically install, configure and maintain the eNB. Compared with the previous manual maintenance mode, SON can reduce the workload and further reduce the operation and maintenance cost of the operator.
- the PCI is the basic configuration parameter of the radio cell. When a new eNB is connected to the network, all the cells supported by the eNB need to be assigned a PCI, so as to avoid interference between adjacent cells.
- PCI is allocated by network planning, which is one of the initial configurations of the base station.
- the allocation of PCI should try to ensure that the physical addresses between cells do not conflict within a certain coverage area, and ensure that there is no dry 4 between adjacent cells in the geographical location.
- the centralized method is a specific PCI value of the P eNB by the Operations and Maintenance function (OAM), and the eNB uses the specific PCI value as the PCI of the new cell; the distributed method is the OAM notification.
- eNB - List of available values for PCI After the eNB removes the PCI restriction set from this list, the eNB randomly selects a value in the remaining PCI value list as the PCI of the new cell.
- the PCI restriction set of the eNB includes the following PCI: the UE sends the PCI to the eNB; the neighboring eNB of the eNB sends the PCI to the eNB through the X2 interface; the PCI obtained by other implementation methods, for example, the eNB automatically monitors the obtained PCI.
- the PCI in the restricted set is the PCI that has been used by the surrounding cells of the new cell.
- the eNB since there are only 504 PCIs in the LTE system, and the number of eNBs is often more in the LTE system, when the PCI value is allocated according to the above distributed method, there may be a case where the eNB has no selectable PCI value, for example, If the OAM has a small number of available PCI values in the list for various reasons, and the neighboring eNB reports a large number of PCI limit values through the X2 interface, the eNB may not be able to obtain the required PCI.
- the present invention has been made in view of the problem in the related art that a base station cannot select a PCI for a cell supported by it when a distributed method is used for PCI allocation.
- the main object of the present invention is to provide a method between base stations.
- a method of transmitting center frequency point information between base stations is provided.
- the method for transmitting the central frequency point information between the base stations according to the present invention includes: the source base station and the target base station mutually transmit the central frequency point information of the neighboring cells of the serving cell through the X2 interface message, and the central frequency point information of the neighboring cell of the serving cell Used for the selection of the physical address of the cell.
- a method for allocating a physical address of a cell is provided, where the method is used by a target base station to allocate a physical address of a cell to a target cell belonging to a target base station.
- the method for allocating a physical address of a cell includes: obtaining, by the target base station, a list of available cell physical addresses sent by the operation and maintenance function entity, and obtaining an optional cell from the restricted cell physical address of the target cell in the available cell physical address list a set of the physical address; the X2 interface message of the target base station includes the central frequency point information of the neighboring cell of the serving cell; the target base station acquires the central frequency point information of the neighboring cell of the serving cell by using the X2 interface message, and acquires the first reference cell physics in a predetermined manner.
- a base station is provided.
- the base station includes: a first acquiring module, configured to acquire a cell physical address list sent by the operation and maintenance function entity and a restricted cell physical address of the target cell; and a first processing module, configured to remove the available cell physical address list
- the restricted cell physical address of the target cell is obtained by the set of the selected cell physical address
- the second acquiring module is configured to acquire the first reference cell physical address set in a predetermined manner according to the central frequency point information of the cell obtained through the X2 interface message, The first reference 'J, the cell center frequency point information in the area physical address set is different from the center frequency point information of the target cell
- the second processing module is configured to use the physical address set acquired by the second obtaining module and the available cell physics
- the address set takes the intersection to form a second reference cell physical address set
- the selecting module is configured to select a cell physical address for the target cell
- the calling module is configured to invoke the selecting module
- the selecting module is in the optional cell physical address set of the first processing module Randomly select a cell physical address
- FIG. 1 is a flowchart of a method for allocating a physical address of a cell according to an embodiment of the method of the present invention
- FIG. 2 is a detailed processing flowchart of a method for allocating a physical address of a cell according to an embodiment of the method of the present invention
- 3 is a flowchart of message establishment based on an X2 interface according to an embodiment of the method of the present invention
- FIG. 4 is a flowchart of base station configuration update according to an embodiment of the method of the present invention
- FIG. 5 is a structure of a base station according to an embodiment of the apparatus of the present invention. block diagram.
- PCI multiplexing can be considered in PCI automatic configuration.
- the inter-cell will be severely inter-celled, resulting in the cell being unavailable.
- the neighboring area can be allowed to have the same frequency as the PCI. Since the center frequency of the cell is inconsistent, it will not cause interference, and will not cause physical address conflict between cells. Therefore, the new cell may be allowed to multiplex the PCI of the surrounding inter-frequency cell.
- the present invention provides a method for transmitting central frequency point information between base stations and a cell physical address allocation scheme using the method.
- Method Embodiment 1 a method for transmitting central frequency point information between base stations and a method for allocating a physical address of a cell using the method are provided. It should be noted that, for convenience of description, the technical solutions of the method embodiments of the present invention are shown and described in the following steps, and the steps shown below may be in a computer system such as a set of computer executable instructions. carried out.
- FIG. 1 is a flowchart of a method for allocating a physical address of a cell according to an embodiment of the present invention.
- the target base station allocates a physical address of a cell to a target cell that belongs to the target base station, and includes the following steps (step S102 to step S108).
- step S102 the target base station acquires the available cell physical address list sent by the operation and maintenance function entity, and obtains the optional cell physical address set by removing the restricted cell physical address of the target cell from the available cell physical address list;
- Step S104 The X2 interface message of the target base station includes the central frequency point information of the neighboring cell of the serving cell, and the neighboring cell center frequency point information of the serving cell is used for selecting the physical address of the cell.
- the X2 interface message includes at least one of the following: an X2 setup request message, an X2 setup response message, and a base station configuration update message.
- the target base station obtains the central frequency point information of the neighboring cell of the serving cell by using the X2 interface message, and obtains the first manner in a predetermined manner.
- a reference cell physical address set where the cell center frequency information in the first reference cell physical address set is different from the target cell target frequency information of the target base station;
- Step S106 the target base station sets the available cell physical address list with the first
- the target base station randomly selects one physical address as the physical address of the cell of the target cell, if the set of the physical address of the optional cell is If it is empty, a cell physical address is randomly selected in the second reference cell physical address set as the cell physical address of the target cell.
- the first reference cell physical address set herein refers to a PCI set of surrounding cells that are different from the target cell.
- the target base station may determine the first reference cell physical address set by the following four predetermined manners. Manner 1: The target base station collects, by using the X2 interface, the cell physical address and the central frequency point information of the cell supported by all the base stations that have the X2 connection with the target base station, and the physical address of the cell used by the neighboring cell of the cell supported by the all base stations. The target cell site determines the cell physical address of the one or more cells corresponding to the central frequency point information different from the central frequency point information of the target cell in the collected central frequency point information as the first reference cell physical address set.
- Manner 2 The target base station collects the cell physical address and the center frequency point information used by the neighboring cells of the cell supported by all the base stations that have the X2 connection with the target base station through the X2 port; the target base station collects the central frequency point information and the target cell The cell physical address of the one or more cells corresponding to the different central frequency point information of the central frequency point information is determined as the first reference cell physical address set.
- Manner 3 The target base station collects the physical address of the cell and the center frequency point information used by the neighboring cells of the cell supported by all the base stations that have the X2 connection with the target base station through the X2 port; the target base station will collect the collected central frequency point information from the target cell.
- the physical address of the cell of one or more cells corresponding to different central frequency point information of the central frequency point information is removed from the physical address of the cell of all cells different from the central frequency point information of the target cell on the user equipment.
- One or more cell physical addresses are determined as a first reference cell physical address set.
- Manner 4 The target base station collects the physical address of the cell and the center frequency point information of the surrounding cells on the user equipment, and collects the physical address and central frequency point information of the cell supported by all the base stations that have the X2 connection with the target base station through the X2 port.
- the physical address of the cell of the one or more cells corresponding to the central frequency point information different from the central frequency point information of the target cell in the information is determined as the first reference cell physical address set.
- the target base station sends a first response message to the OAM, notifying the OAM target cell that the selected cell physical address in the selectable cell physical address set fails; after the OAM obtains the response message, determining the target Whether the base station selects a physical address of the cell for the target cell in the second reference cell physical address set, and sends a determination result to the target base station. If the target base station fails to allocate the cell physical address to the target cell in the second reference cell physical address set, the target base station sends a second response message to the OAM, notifying the OAM target cell in the first reference and the zone physical address set. Select 'J, zone physical address failed.
- the technical solution provided by the embodiment of the present invention can improve the PCI of the target cell by using the PCI of the cell different from the central frequency point information of the target cell in the distributed method.
- the success rate avoids PCI conflicts between cells and interference between cells, thereby improving network operation performance and reducing network operation and maintenance costs.
- the instance newly joins an eNB in the system, and needs to implement automatic physical configuration to implement physical address allocation of the cell under the new eNB, so that the cell starts normal work.
- 2 is a flowchart of automatically allocating a PCI for a cell supported by an eNB according to the present invention. For clarity of description, the following is an implementation of the present invention by using the eNB as a PCI for the cell 1 (ie, the target cell described above).
- the example is explained and includes the following processing.
- the SI and the OAM send the available PCI set to the eNB.
- the OAM delivers a list of available PCI values for the e NB according to the planning principle of the PCI and according to the requirements of the operator.
- the eNB acquires the used PCI set by the neighboring cell of the cell 1 by means of the UE reporting, the X2 interface reporting, and the base station self-monitoring, and the e NB is configured to enable the cell 1 not to use the same PCI as the surrounding cell of the cell 1.
- the PCI set used by the surrounding cells is used as a PCI restricted set, and the eNB obtains a PCI selectable set after culling the PCI restricted set in the available PCI set (ie, as described above)
- the optional cell physical address set) (corresponding to step S102 above), that is, the PCI in the PCI selectable set can be selected for the cell 1, and the PCI selected by the cell 1 in the PCI selectable set is not surrounded by the PCI.
- the PCI used by the cell is repeated.
- the eNB collects PCI and center frequency point information of a cell supported by all base stations that have an X2 connection with the eNB through an X2 interface, and PCI and center frequency point information used by neighboring cells of the cell supported by the all base stations,
- the eNB selects a PCI of a cell different from the center frequency point information of the cell 1 among all the obtained cells, and determines a PCI set of a cell different from the center frequency point information of the cell 1 (ie, the first reference cell described above) a physical address set) (corresponding to step S104 above), and the PCI set is intersected with the available PCI set sent by the OAM to obtain a PCI multiplex set (ie, the second reference cell physical address set described above) (corresponding to In the foregoing step S106), the PCI in the PCI multiplexing set is selectable for the cell 1, and the PCI value selected by the cell 1 in the PCI multiplexing set is the same as the PCI value of the inter-frequency cell around the cell 1.
- the interface message of the X2 needs to transmit the serving cell in addition to the PCI of the neighboring cell of the service and the area.
- the center frequency information of the neighboring cell See the X2 setup request message in the X2 setup message flow, the X2 setup response message, and the ENB configuration update message in the ENB configuration update procedure.
- the neighboring cell information of the serving cell is extended in the three messages, and the existing neighbor cell information is included.
- the global PCI of the cell, the global ID of the cell, and the information of the center frequency of the new cell is called EARFCN).
- the specific information structure is shown in the center of the neighboring cell of the serving cell in Table 1. Frequency point information structure chart. Table 1
- FIG. 3 is a flow chart of message establishment based on an X2 interface according to an embodiment of the present invention.
- an eNB is a newly established base station
- eNB 1 is a neighboring base station of the eNB
- an eNB is to the eNB 1
- the eNB 1 includes three cells a, b, c, and the neighboring cell of cell a is d
- the neighboring cell of cell b is e
- cell c has no neighboring cell
- e NB 1 The PCI and center frequency information of the cells a, b, c, d, e will be sent to the eNB through the X2 setup response.
- the PCI set of ⁇ a, b, c, d, e ⁇ is ⁇ 0, P, Q, R, S ⁇ , and the cells c, d, e and the cell 1 are different frequency.
- the PCI set ⁇ Q, R, S ⁇ is the first reference cell physical address set described above, and the eNB crosses the PCI set ⁇ Q, R, S ⁇ with the available PCI set sent by the OAM, and sets the obtained intersection. Is ⁇ Q, S ⁇ , then the PCI multiplex set (ie, the second reference cell physical address set described above) is ⁇ Q, S ⁇ .
- the eNB first selects a PCI value for the cell 1 in the PCI selectable set, that is, a PCI value randomly selected in the PCI selectable set as the PCI of the cell 1. If the PCI is randomly selected in the PCI selectable set, Then, the randomly selected PCI value is configured as the PCI of the cell 1 and is transferred to the S6; if the PCI value is randomly selected in the PCI selectable set, the B' J is transferred to the S5.
- the eNB selects a PCI value for the cell 1 in the PCI multiplexing set (corresponding to the foregoing step S108), that is, a PCI value randomly selected in the PCI multiplexing set is used as the PCI of the cell 1, and the PCI value is used. Configure the PCI for cell 1 and go to step 6.
- the PCI value of cell 1 is passed to OAM.
- OAM Various preferred embodiments of the embodiments of the present invention are described below.
- the eNB obtains all the information obtained by the eNB.
- the method generates: e NB acquires a PCI set of a neighboring cell that is different from the cell of the cell to which the PCI is to be allocated through all the cells of the neighboring base stations on the X2 interface, and then removes the current and current methods obtained by the UE reporting and other methods.
- a PCI set (ie, the first reference cell physical address set described above) is obtained, and then the PCI set is intersected with the available PCI set sent by the OAM to obtain a PCI multiplex set.
- the PCI in the PCI multiplexing set is selected for the cell 1 and the PCI value selected by the cell 2 in the PCI multiplexing set is overlapped with the PCI value of the surrounding inter-frequency cell, but the PCI value of the neighboring cell adjacent to the inter-frequency
- the probability of repetition is greatly reduced, thereby reducing the probability of confusion of PCI values between cells.
- the inter-frequency cell that may become the neighboring cell may also multiplex the same PCI, and the restricted set collected by the eNB and the current PCI to be allocated.
- the PCI set of all cells of the cell 1 inter-frequency ie, the first reference cell physical address set described above
- the intersection of the PCI set and the available PCI set given by the OAM thus generating a complex Use a larger range of PCI multiplex sets.
- FIG. 5 is a structural block diagram of a base station according to an embodiment of the present invention.
- the base station includes a first acquiring module 10, a first processing module 20, a first acquiring module 20, a second processing module 40, and selecting Module 50 and calling module 60, the above structure will be described below.
- the first obtaining module 10 is configured to obtain a cell physical address list sent by the OAM and a restricted cell physical address of the target cell.
- the first processing module 20 is connected to the first acquiring module 10, and is configured to remove the target cell from the cell physical address list.
- the second obtaining module 20 configured to determine, according to the central frequency point information of the cell obtained by the interface message of the X2, the first reference cell physical address set, where The first reference module 'J, the cell center frequency point information in the area physical address set is different from the center frequency point information of the target cell;
- the second processing module 40 is connected to the first obtaining module 10 and the second obtaining module 20, for The intersection of the cell physical address list and the first reference cell physical address set is determined as the second reference cell physical address set;
- the selecting module 50 is connected to the first processing module 20 and the second processing module 40, and is configured to select the cell physics for the target cell.
- call module 60 connected to the selection module 50, used to tune With the selection module 50, the selection module 50 selects a cell physical address for the target cell as the cell physical address of the target cell in the available cell physical address set of the first processing module 20, and if the available cell physical address set is empty, A cell physical address is selected as the cell physical address of the target cell in the second reference cell physical address set of the second processing module 40.
- the base station provided by the embodiment of the present invention can improve the PCI configuration of the target cell by using the PCI of the cell different from the central frequency point information of the target cell in the distributed method as the PCI of the target cell. The rate avoids PCI collisions between cells and interference between cells, thereby improving network operation performance and reducing network operation and maintenance costs.
- the method for allocating the physical address of the cell and/or the base station provided by the present invention can implement automatic configuration of the PCI of the base station by the e NB, especially when the PCI value is insufficient.
- To allocate the PCI value for the new cell avoid the collision of the physical address of the J and the interval, avoid the inter-cell interference, and improve the success rate of the automatic configuration of the PCI by the distributed method of the e NB in the network dense coverage area, thereby improving the network operation performance. , reduce network operation and maintenance costs.
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09824361.1A EP2320693A4 (en) | 2008-11-07 | 2009-08-07 | METHOD FOR ALLOCATING PHYSICAL CELL ID AND BASE STATION |
US13/122,534 US8660570B2 (en) | 2008-11-07 | 2009-08-07 | Physical cell ID allocation method and base station |
JP2011530353A JP5444359B2 (ja) | 2008-11-07 | 2009-08-07 | 物理セルidの割当方法と基地局 |
BRPI0921405-4A BRPI0921405A2 (pt) | 2008-11-07 | 2009-08-07 | método de alocação de identificação de células físicas e estação base |
KR1020117009624A KR101197847B1 (ko) | 2008-11-07 | 2009-08-07 | 물리계층 셀 식별자의 할당 방법과 기지국 |
MX2011004837A MX2011004837A (es) | 2008-11-07 | 2009-08-07 | Metodo de asignacion de identidad fisica a celula, y estacion de base. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN2008101760567A CN101742484B (zh) | 2008-11-07 | 2008-11-07 | 小区物理地址的分配方法和基站 |
CN200810176056.7 | 2008-11-07 |
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WO2010051706A1 true WO2010051706A1 (zh) | 2010-05-14 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/CN2009/073151 WO2010051706A1 (zh) | 2008-11-07 | 2009-08-07 | 小区物理地址的分配方法和基站 |
Country Status (8)
Country | Link |
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US (1) | US8660570B2 (zh) |
EP (1) | EP2320693A4 (zh) |
JP (1) | JP5444359B2 (zh) |
KR (1) | KR101197847B1 (zh) |
CN (1) | CN101742484B (zh) |
BR (1) | BRPI0921405A2 (zh) |
MX (1) | MX2011004837A (zh) |
WO (1) | WO2010051706A1 (zh) |
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CN113630797B (zh) * | 2014-11-14 | 2024-04-12 | 索尼公司 | 管理移动基站的设备和方法 |
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CN101742484A (zh) | 2010-06-16 |
JP5444359B2 (ja) | 2014-03-19 |
MX2011004837A (es) | 2011-06-06 |
EP2320693A1 (en) | 2011-05-11 |
JP2012504921A (ja) | 2012-02-23 |
KR20110063571A (ko) | 2011-06-10 |
CN101742484B (zh) | 2013-01-16 |
US8660570B2 (en) | 2014-02-25 |
EP2320693A4 (en) | 2014-07-09 |
BRPI0921405A2 (pt) | 2020-10-27 |
KR101197847B1 (ko) | 2012-11-05 |
US20110201345A1 (en) | 2011-08-18 |
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