WO2012000382A1 - 一种控制用户设备驻留小区的方法和装置 - Google Patents

一种控制用户设备驻留小区的方法和装置 Download PDF

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Publication number
WO2012000382A1
WO2012000382A1 PCT/CN2011/075671 CN2011075671W WO2012000382A1 WO 2012000382 A1 WO2012000382 A1 WO 2012000382A1 CN 2011075671 W CN2011075671 W CN 2011075671W WO 2012000382 A1 WO2012000382 A1 WO 2012000382A1
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WO
WIPO (PCT)
Prior art keywords
cell
base station
frequency
user equipment
channel information
Prior art date
Application number
PCT/CN2011/075671
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English (en)
French (fr)
Inventor
邓明毅
田煦
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020137001373A priority Critical patent/KR101429630B1/ko
Publication of WO2012000382A1 publication Critical patent/WO2012000382A1/zh
Priority to US13/729,683 priority patent/US8600389B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • 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
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events

Definitions

  • the present invention claims to be submitted to the Chinese Patent Office on June 30, 2010, and the application number is 201010218681.
  • the invention name is "a method and device for controlling a user equipment resident cell" Priority of the Chinese Patent Application, the entire contents of which is incorporated herein by reference.
  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for controlling a user equipment to camp on a cell.
  • BACKGROUND OF THE INVENTION The third generation mobile communication system has been commercialized on a global scale. As the number of users continues to increase, the amount of traffic continues to expand, and users have higher requirements for the quality of service provided by the third generation mobile communication network. Due to the loss of signals in the existing mobile services due to obstacles such as indoor walls, the user equipment (User's Equipment) has poor signal quality indoors and reduces the communication quality of the users.
  • a femtocel l base station technology is introduced, and the Femtocel l base station is placed in the user's home, which saves operating costs such as equipment room, power supply, air conditioning, and circuit maintenance; so that indoor coverage is good, Femtocel l base station coverage radius Small, connected terminals will reduce their transmit power, save batteries, and reduce radiation to the human body.
  • the introduction of a large number of Femtocel base stations also brings new problems to the existing macro cell: Femtocel l base station interference signal to macro cell interference problem, and macro cell and Femtocel l base station cell handover problem.
  • the networking solutions recommend Femtocel l and the macro network.
  • the inter-frequency network can cause user equipment in the area where the macro cell signal is better. Unable to re-select to Femtocel l. If the user equipment is forced to search for the inter-frequency neighboring area, the user equipment will be introduced to consume too much power. Moreover, in order to realize the reselection of the macro cell to Femtocel, it needs to be configured in each macro cell.
  • the cell generated by the different Femtocel l base station transmission signals is its neighboring area, which has become a major bottleneck for the large-scale deployment of Femtocel l base stations.
  • the pseudo pilot technology can be used to guide the user equipment to switch from the macro cell to the Femt 0C el l.
  • the A base station is a macro cell base station
  • the B base station is a Femtocel l base station
  • the mobile phone roams under the A base station, and uses carrier frequency F 2 communication.
  • the B base station only provides service by the carrier frequency.
  • the signal of the A base station F 2 received by the mobile phone is getting weaker and weaker, and the signal of the B base station is gradually enhanced.
  • the B base station transmits the pseudo pilot on the carrier frequency F 2 , and the pseudo pilot has only energy and does not have the service channel. Maybe, that is, it cannot be parsed.
  • the mobile phone When the mobile phone is under the service of the A base station of the carrier frequency, when moving from the A base station to the B base station, the mobile phone continuously detects the nearby base. The pilot signal strength of the station.
  • T_ADD pilot join threshold
  • the mobile phone When the pilot join threshold (T_ADD) parameter value exceeds the threshold, the mobile phone will actively send a pilot strength measurement message (PSMM, Pilot Sthength Measuring Message). 0 After the base station receives the message, it queries the neighbor.
  • PSMM pilot Sthength Measuring Message
  • the A base station sends an Extended Hand-Off Direction Message (EHDM) to the mobile phone, notifying the mobile phone to switch to the carrier frequency, and transmitting the handover parameter to the mobile phone.
  • EHDM Extended Hand-Off Direction Message
  • the mobile phone immediately switches to the carrier frequency of the A base station, and then switches from the carrier frequency of the A base station to the carrier frequency of the B base station according to the soft handover manner, thereby ensuring smooth handover.
  • the inventors of the present invention have found that in the method of reselecting a cell according to a pseudo pilot, a cell that is transmitted by a B base station and includes a pseudo pilot signal to form a coverage area of the A base station is The same frequency interference effect, the signal transmitting the pseudo pilot is very strong, and the pseudo pilot does not have the ability to provide services, and only carries a very large noise signal, prompting the user equipment to initiate the inter-frequency measurement, therefore,
  • the same-frequency interference is increased, and the communication environment of the cell is deteriorated, which affects users who normally perform services in the cell.
  • the amount of power consumed by the user equipment to generate the inter-frequency measurement increases, and the radiation of the user equipment to the human body is increased.
  • the user equipment further needs to configure, in the base station A in the macro cell, a plurality of information about a Femtocell (such as the B base station as exemplified above) adjacent to the macro cell, such as: a pseudo pilot signal transmitted by an adjacent Femtocel base station, and adjacent
  • a Femtocell such as the B base station as exemplified above
  • the Femtocel l can provide pilot information of the service, etc., and the base station configuration burden in the macro cell is emphasized, which is not conducive to the management of the macro cell base station equipment.
  • the embodiments of the present invention provide a method and a device for controlling a user equipment to camp on a cell, so as to control the user equipment to camp on the target cell, and the same-frequency interference caused by the source cell is small, and a large number of base station devices in the source cell are also avoided. Configuration.
  • a method for controlling a camping cell of a user equipment, using a communication system including a source cell, a virtual cell, and a destination cell includes:
  • the base station of the virtual cell transmits a first signal including the first common channel information at the first frequency point, where the first frequency point is the same as the frequency of the signal transmitted by the source cell base station, and the first frequency point and the destination
  • the frequency of the signal transmitted by the cell base station is different, and the scrambling code of the first signal is different from the scrambling code of the signal sent by the base station of the source cell;
  • the first common channel information includes: a pilot, a location area number, and an inter-frequency reselection threshold; causing the user equipment to perform co-frequency reselection cell operation and reselection according to the pilot in the first common channel information. To the virtual cell; And causing the user equipment to determine, if the location area number is the same as the location area number of the source cell and the target cell, performing inter-frequency reselection according to the different frequency reselection threshold in the first common channel information. The cell operates and reselects to the target cell.
  • the base station of the virtual cell transmits a second signal including the second common channel information at the second frequency point, where the second frequency point is the same as the frequency of the signal transmitted by the source cell base station, and the second frequency point and the destination
  • the frequency of the signal transmitted by the cell base station is different, and the scrambling code of the second signal is different from the scrambling code of the signal sent by the source cell base station;
  • the second common channel information includes: a pilot and a location area number; causing the user equipment to perform a co-frequency reselection cell operation according to the pilot in the second common channel information, and reselecting to the virtual cell; Determining, by the user equipment, that the location area number is different from the location area number of the source cell, and sending a first radio resource control connection request to the base station of the virtual cell;
  • the base station of the virtual cell Receiving, by the base station of the virtual cell, the first radio resource control connection request sent by the user equipment; sending, according to the pre-configured reject radio resource control connection information, a response rejecting establishing a radio resource control connection with the user equipment, where The response further includes: information of the target cell, where the information of the target cell is used to indicate that the location of the user equipment is updated to the target cell.
  • a device for controlling a cell of a user equipment includes: a first transmitting unit, configured to transmit, at a first frequency point, a first signal including the first common channel information, where The first frequency point is the same as the frequency of the signal transmitted by the source cell base station, the first frequency point is different from the frequency of the signal transmitted by the target cell base station, and the scrambling code of the first signal and the base station of the source cell
  • the first common channel information includes: a pilot, a location area number, and an inter-frequency reselection threshold; the user equipment is caused to perform the same according to the pilot in the first common channel information.
  • Reselecting a cell operation reselecting a cell formed by the area covered by the first signal sent by the apparatus; and further causing the user equipment to determine, if the location area number and the location of the source cell and the target cell If the area numbers are the same, the inter-frequency reselection cell operation is performed according to the inter-frequency reselection threshold in the first common channel information, and the cell is reselected to the target cell.
  • a device for controlling a camping cell of a user equipment which uses a communication system including a source cell and a destination cell, and includes:
  • a second transmitting unit configured to transmit, at a second frequency point, a second signal including second common channel information, where the second frequency point is the same as a frequency of a signal transmitted by the source cell base station; The point is different from the frequency of the signal transmitted by the target cell base station, and the scrambling code of the second signal is different from the scrambling code of the signal sent by the source cell base station;
  • the second common channel information includes: a pilot and a location area number; causing the user equipment to perform a co-frequency reselection cell operation according to the pilot in the second common channel information, and reselecting to the device to send a cell formed by the area covered by the second signal; the user equipment further determining, if the location area number is different from the location area number of the source cell, sending a first radio resource control connection request to the apparatus;
  • a first receiving unit configured to receive a first RRC connection request sent by the user equipment, where the first sending unit sends a refusal to establish a RRC connection with the user equipment according to the pre-configured refusal of the RRC connection information
  • the response further includes: information of the target cell, where the information of the target cell is used to indicate that the location of the user equipment is updated to the target cell.
  • the base station of the virtual cell transmits a signal including the common channel information, where the frequency of the signal of the virtual cell is the same as the frequency of the signal transmitted by the source cell base station, and the common channel information includes the pilot, the location area number, and The inter-frequency reselection threshold or the common channel information includes a pilot and a location area number, and the common channel information includes content for directing the user equipment to camp on the target cell by reselection or camping to the destination cell by the location update operation.
  • the embodiment of the present invention adopts a signal including the common channel information
  • the signal is a broadcast signal, unlike the pseudo pilot
  • the same-frequency interference caused by the source cell is small, and the interference to the normal service of the source cell is reduced.
  • the base station of the source cell is prevented from performing a large number of configurations.
  • FIG. 1 is a flowchart of a method for controlling a camped cell of a user equipment according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for controlling a camping cell of a user equipment according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of cell coverage when a user equipment moves from a macro cell to a Femtocel l;
  • FIG. 4 is a schematic diagram of an apparatus for controlling a camped cell of a user equipment according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of another apparatus for controlling a camping cell of a user equipment according to an embodiment of the present invention.
  • the embodiment of the invention provides a method for controlling a user equipment to camp on a user equipment, which is described in detail below.
  • FIG. 1 is a flowchart of a method for controlling a camped cell of a user equipment according to an embodiment of the present invention.
  • the method utilizes a communication system including a source cell, a virtual cell, and a destination cell.
  • the base station of the virtual cell transmits a first signal including the first common channel information at the first frequency point, where the first frequency point is the same as the frequency used by the signal transmitted by the source cell base station, and the first signal is used.
  • the scrambling code is different from the scrambling code of the signal transmitted by the base station of the source cell.
  • the user equipment After receiving the first signal, the user equipment enables the user equipment to identify the virtual cell.
  • the virtual cell cannot provide services for the user equipment, and the base station of the virtual cell and the base station of the target cell may be the same base station or different base stations. If they are different base stations, the two base stations can be co-sites.
  • co-site address as used herein may refer to two base stations having the same center position or similar center positions.
  • the transmission signals of the base station of the virtual cell and the base station of the destination cell may be different.
  • the frequency of the signal transmitted by the base station of the target cell is different from the frequency used by the signal transmitted by the source cell base station, and the base station of the target cell can provide services for the user equipment entering the cell.
  • the source cell of the user equipment enters the virtual cell, since the virtual cell and the target cell are co-sites, the coverage of the entering virtual cell is likely to enter the coverage of the target cell, because the coverage of the virtual cell and the target cell The range may be coincident.
  • the user equipment may perform the same-frequency measurement, reselect the virtual cell, and perform the inter-frequency reselection of the cell according to the signal transmitted by the virtual cell base station, so that the user equipment reselects the camped cell as the target cell.
  • the source cell described above can be understood as a macro cell
  • the target cell can be understood as Femtocel l
  • the user equipment enters the destination cell from the source cell, which can be understood as entering from the macro cell to Femtocel lo. The method is specifically described.
  • the method includes: Step S1: The base station of the virtual cell transmits a first signal including the first common channel information at the first frequency point, where the first frequency point and the signal transmitted by the source cell base station The frequency of the first frequency point is different from the frequency of the signal transmitted by the base station of the target cell, and the scrambling code of the signal sent by the base station of the source cell is different; the first common channel information includes at least: And the location area number and the inter-frequency reselection threshold; the user equipment performs the intra-frequency reselection cell operation according to the pilot in the first common channel information, and reselects to the virtual cell; and further causes the user equipment to determine, if the location area number and the source cell And the location area number of the target cell is the same, and the inter-frequency reselection is performed according to the different frequency reselection threshold in the first common channel information.
  • the base station of the virtual cell does not provide services for the user equipment entering the virtual cell.
  • the base station of the virtual cell transmits the first common channel information included in the first signal, and specifically includes: a Common Pilot Channel (CPICH), and a Subordinate Common Control Physic Channel (SCCPCH). Master Common Control Physical Channel (PCCPCH, Principal Common Control Physical Channel), Synchronous Channel (SCH), Packet Randem Access Channel (PRACH), and Acquisition Indication Channel (AICH).
  • the first signal transmitted by the base station of the virtual cell is a broadcast signal, and the user equipment entering the virtual cell can receive the first signal.
  • the user equipment And receiving, by the user equipment, the scrambling code of the signal transmitted by the source cell base station according to the scrambling code of the first signal, so that the user equipment identifies the virtual cell.
  • the user equipment measures, according to the pilot of the first common channel information in the first signal, the pilot in the received first common channel information, and performs the operation of the intra-frequency reselection cell according to the preset intra-frequency reselection rule.
  • the operation of the reselected cell in the user equipment may be: the user equipment performs the same-frequency cell measurement.
  • the user equipment sets the virtual cell as the serving cell, and completes the operation of reselecting to the virtual cell after the setting is completed.
  • the user equipment When the user equipment has service processing, the user equipment establishes a connection with the virtual cell. The user equipment further determines, according to the location area number included in the first common channel information in the first signal, whether it is the same as the location area number of the source cell and the destination cell, and determines the location area number of the source cell, the virtual cell, and the destination cell. Similarly, since the location area numbers are the same, the camping to the destination cell operation is actually completed as long as the user equipment completes the reselection to the destination cell operation. Specifically, the user equipment may perform the inter-frequency reselection cell operation according to the inter-frequency reselection threshold in the first common channel information.
  • the user equipment sets the target cell as the serving cell, and completes the reselection to the target cell operation, that is, Complete the operation of camping to the destination cell.
  • the specific operation of determining whether to perform the inter-frequency cell reselection according to the reselection threshold may be: the user equipment determines whether the received signal strength is less than a reselection threshold, and if the reselection threshold is less than the reselection threshold, performs inter-frequency cell reselection.
  • the virtual cell is configured as a neighboring cell of the source cell in the source cell base station.
  • Step S2 The base station of the target cell transmits a third signal including the third common channel information at the third frequency point, where the third frequency point is different from the frequency used by the source cell. This step is only for the convenience of understanding the technical solutions of the embodiments of the present invention, and is not a necessary step for solving the technical problems of the embodiments of the present invention.
  • the base station of the target cell transmits the third signal including the third common channel information at the third frequency point, so that the cell formed by the range covered by the third signal can provide services for the user equipment entering the range.
  • the first signal and the third signal described above are both broadcast signals, and can be received by user equipments within the coverage of the target cell base station.
  • the base station of the target cell and the base station of the virtual cell may be the same base station or different base stations.
  • the virtual cell and the destination cell can be co-sited.
  • the base station of the virtual cell or the base station of the target cell is a femtocell base station or a home base station; the source cell may be a macro cell.
  • the user equipment performs the same-frequency measurement according to the pilot in the first signal, and selects the virtual cell as the serving cell according to the frequency point and the scrambling code information of the neighboring area included in the neighbor information in the source cell, and the user equipment receives the Obtaining the location area number and the inter-frequency reselection threshold in the first signal, determining whether to perform the inter-frequency measurement reselection cell, and when the user equipment determines that the location area number in the first signal is the same as the location area number of the source cell and the destination cell,
  • the inter-frequency reselection threshold is performed in the first common channel information, and the inter-frequency reselection cell operation is performed, and the user equipment selects a range that is covered by the third signal transmitted by the target cell base station to form a service-providing cell, which is a user equipment resident cell.
  • the base station needs to be configured with the same-frequency measurement threshold. After the user equipment receives the intra-frequency measurement threshold sent by the base station in the source cell, the user equipment selects whether the network-side measurement result is used by the user equipment. It is also understood that the same frequency measurement reselection cell is performed, and usually the user equipment performs the same frequency measurement in real time.
  • the base station of the virtual cell needs to configure an inter-frequency measurement threshold, and the purpose is to select whether the user equipment receives the inter-frequency measurement threshold sent by the base station in the virtual cell, according to the location area number and the measurement result of the user equipment on the network side. Perform inter-frequency measurement to reselect the cell.
  • the base station in each cell is configured with the same frequency measurement threshold, and the inter-frequency measurement threshold is also configured.
  • the user equipment selects the performed measurement according to the measurement result on the network side.
  • the user equipment may perform the same-frequency measurement reselection cell in the source cell in real time. After the user equipment reselects to the virtual cell, the user equipment may perform the inter-frequency measurement according to the location area number and the inter-frequency measurement threshold. Selected to the destination cell.
  • the base station of the virtual cell and the base station of the target cell may be the same, that is, both are Femtocel l base stations.
  • the base station of the virtual cell transmits a signal including the common channel information, where the frequency of the signal of the virtual cell is the same as the frequency of the signal transmitted by the source cell base station, and the common channel information includes the pilot and the location area number.
  • the inter-frequency reselection threshold the content of the common channel information is used to guide the user equipment to perform camping by reselection to the target cell.
  • the embodiment of the present invention uses a signal including common channel information, since the signal is a broadcast signal, unlike the pseudo pilot, the same-frequency interference caused to the source cell is small, and the interference to the normal service of the source cell is reduced. At the same time, a large number of configurations are performed on the source cell base station.
  • the configurations of different virtual cells may be the same.
  • the frequency and scrambling code of signals transmitted by different virtual cells may be the same, and the frequency is the same as the frequency of the signal transmitted by the source cell base station.
  • the configurations of the common channel information in the signals transmitted by the different virtual cells are different, and the specific difference may be that the inter-frequency neighboring cell information of the virtual cell included in the common channel information is different, and the inter-frequency neighboring cell of each virtual cell is different.
  • the information corresponds to different destination cells.
  • the user equipment entering the virtual cell is reselected into the corresponding destination cell according to the inter-frequency neighbor information included in the common channel information of the virtual cell.
  • Step A1 The base station of the virtual cell transmits a second signal including the second common channel information at the second frequency point, where the second frequency point is the same as the frequency of the signal transmitted by the source cell base station.
  • the second frequency point is different from the frequency of the signal transmitted by the target cell base station, and the scrambling code of the second signal is different from the scrambling code of the signal sent by the source cell base station;
  • the second common channel information includes at least: pilot and a location area number;
  • the user equipment is configured to measure the strength of the pilot in the second common channel information according to the pilot in the second common channel information, according to a preset co-frequency reselection rule And performing the same-frequency reselection cell operation, reselecting to the virtual cell; and further causing the user equipment to determine, if the location area number and the location area number of the source cell are different, sending the first radio resource control connection to the base station of the virtual cell.
  • the RRC initiates the virtual cell base station (RRC, Radio Resource Control) connection.
  • RRC Radio Resource Control
  • Step A2 The base station of the virtual cell receives a first radio resource control (RRC, Radio Resource Control) connection request sent by the user equipment according to the second common channel information.
  • Step A3 The base station of the virtual cell controls the connection information according to the pre-configured reject radio resource.
  • the response further includes: information about the target cell, where the information of the target cell is used to indicate a user equipment location update (LAU, Locat ion Aera Update) to the target cell.
  • LAU user equipment location update
  • the user equipment When the user equipment enters the virtual cell from the source cell, the user equipment performs co-frequency measurement reselection into the virtual cell.
  • the user equipment may learn the location area number (LAC) of the virtual cell from the second common channel information according to the second common channel information included in the received second signal, and determine the virtual cell. Different from the LAC of the source cell of the user equipment, the LAC initiates an RRC connection to the virtual cell, that is, sends an RRC connection request. In the method shown in FIG.
  • the LAC and the user equipment in the first common channel information delivered by the base station of the virtual cell The LAC of the source cell is the same, and therefore, the user equipment does not initiate an RRC connection.
  • the LAC parameters configured for the virtual cell in the two methods shown in FIG. 1 and FIG. 2 are different.
  • the base station of the virtual cell After receiving the first RRC connection request, the base station of the virtual cell refuses to establish an RRC connection with the user equipment, and sends a response rejecting the establishment of an RRC connection with the user equipment. Therefore, the user equipment fails to establish an RRC connection with the virtual cell.
  • the user equipment sends the RRC connection request to the target cell, where the user equipment sends the RRC connection request to the target cell according to the information of the target cell that is included in the response to the RRC connection with the user equipment.
  • the base station of the target cell may be the same base station as the base station of the virtual cell, or may be different. If it is a different base station, the two base stations may also be co-sited. Usually, the coverage of the two base stations is overlapping.
  • the method may further include: Step A4: The base station of the target cell transmits a fourth signal including the fourth common channel information at the fourth frequency point, where the fourth frequency point is different from the frequency used by the source cell; Step A5: The base station of the target cell receives the second RRC connection request sent by the user equipment, performs an operation of establishing an RRC, and sends an RRC connection complete message to the user equipment.
  • the user equipment sends a first radio resource control connection request, which is used to initiate a radio resource control connection between the user equipment and the virtual cell, and the user equipment sends a second radio resource control connection request, which is used to initiate establishment of the user equipment.
  • a radio resource control connection with the destination cell is to initiate a radio resource control connection with the destination cell.
  • the second RRC connection request is sent to the target cell according to the information of the target cell sent by the base station of the virtual cell, and an RRC connection is established with the target cell.
  • the virtual cell and the target cell may be implemented by the same base station, and may be implemented by a Femtocel base station.
  • the user equipment establishes an RRC connection with the target cell, and the user equipment updates the location to the target cell, and the user equipment is camped on the target cell.
  • the method transmits a signal including common channel information by a base station of a virtual cell, and a frequency of a signal of the virtual cell is transmitted by a source cell base station.
  • the frequency of the signal is the same.
  • the common channel information includes the common channel information including the pilot and the location area number, and the common channel information includes content for guiding the user equipment to camp on the target cell by performing the location update operation.
  • the embodiment of the present invention adopts a signal including the common channel information, since the signal is a broadcast signal, unlike the pseudo pilot, the same-frequency interference caused by the source cell is small, and the interference to the normal service of the source cell is reduced. At the same time, the base station of the source cell is prevented from performing a large number of configurations.
  • the source base station is a macro base station
  • the virtual cell base station and the target cell are in the In this example, the same base station is a Femtocel l base station
  • the method may be: as shown in FIG. 3, the user equipment moves from the macro cell to the Femtocell, and the Femtocel base station may be a home base station.
  • a signal including the common channel information is transmitted on the f2, wherein the frequency point f2 is the same as the frequency used by the macro cell, the home base station cannot provide the service for the user equipment at the frequency point, and the home base station can be used differently from the macro cell.
  • Another frequency point of the frequency point for example, provides services for user equipment.
  • the virtual cell formed by the Femtocel l base station in the area covered by the signal transmitted on the same frequency point f2 as the frequency used by the macro cell controls the user equipment to perform the same frequency measurement and reselect the cell to be reselected to the virtual cell, the Femtocel The base station controls the user equipment to perform inter-frequency reselection or sends an RRC connection request to the Femtocel l base station, so that the user equipment reselects to the target cell or the location is updated to the target cell, where the target cell is covered by a signal transmitted by the Femtocel base station at the frequency point.
  • the cell formed by the area is controlled by the area.
  • FIG. 4 is a schematic diagram of an apparatus for controlling a camping cell of a user equipment according to an embodiment of the present invention.
  • the apparatus uses a communication system including a source cell and a destination cell, where the apparatus includes: a first transmitting unit 401, where a transmitting unit 401, configured to transmit, at a first frequency point, a first signal that includes first common channel information, where the first frequency point is the same as a frequency of a signal transmitted by the source cell base station, and the first frequency point and the target cell
  • the frequency of the signal transmitted by the base station is different, and the scrambling code of the first signal is different from the scrambling code of the signal sent by the base station of the source cell
  • the first common channel information includes at least: a pilot, a location area number, and an inter-frequency reselection threshold;
  • the user equipment performs a co-frequency reselection cell operation according to the pilot in the first common channel information, and reselects a cell formed by the area covered by the first signal sent by the apparatus; and further causes the user equipment to determine If the location area number is the same as the location area number of the source cell and
  • the device transmits the signal including the common channel information, and the frequency of the signal of the virtual cell is the same as the frequency of the signal transmitted by the source cell base station, and the common channel information includes the pilot, the location area number, and the different The frequency reselection threshold, the content of the common channel information is used to direct the user equipment to camp on the target cell by reselection.
  • the embodiment of the present invention adopts a signal including the common channel information, since the signal is a broadcast signal, unlike the pseudo pilot, the same-frequency interference caused by the source cell is small, and the interference to the normal service of the source cell is reduced. At the same time, the source cell base station is prevented from performing a large number of configurations.
  • the device is a femtocell base station or a home base station, and the base station of the device and the target cell may be the same base station or different base stations. Further, the device is a femtocell base station or a home base station, and the device and the base station of the target cell are co-sited. Further, the apparatus may further include: a third transmitting unit 402, configured to transmit, at a third frequency point, a third signal including third common channel information, where the third frequency point is different from a frequency used by the source cell. By adding the third transmitting unit 402, the base station of the virtual cell can also implement the function of the target cell base station. Therefore, the third transmitting unit 402 is only a preferred embodiment and is not a necessary technical feature for solving the technical problem of the present invention.
  • FIG. 5 is a schematic diagram of an apparatus for controlling a camping cell of a user equipment according to an embodiment of the present invention.
  • the apparatus may be specifically a home base station, where the apparatus includes: a second transmitting unit 501, a first receiving unit 503, and a a transmitting unit 504, where the second transmitting unit 501 is configured to transmit, at a second frequency point, a second signal that includes the first common channel information, where the second frequency point is the same as the frequency used by the source cell;
  • the second frequency point is different from the frequency of the signal transmitted by the target cell base station, and the scrambling code of the second signal is different from the scrambling code of the signal sent by the source cell base station;
  • the second common channel information includes at least: pilot and a location area number; causing the user equipment to perform a co-frequency reselection cell operation according to the pilot in the second common channel information, and reselecting a cell
  • the response further includes: information about the target cell, where the information of the target cell is used to indicate that the location of the user equipment is updated to the target cell.
  • the device transmits the signal including the common channel information, and the frequency of the signal of the virtual cell is the same as the frequency of the signal transmitted by the source cell base station, and the common channel information includes the pilot, the location area number, and the different
  • the frequency reselection threshold or the common channel information includes a pilot and a location area number, and the content of the common channel information is used to direct the user equipment to camp on the target cell through the location update operation.
  • the embodiment of the present invention adopts a public The signal of the co-channel information, because the signal is a broadcast signal, is different from the pseudo-pilot, and the co-channel interference caused by the source cell is small, and the interference to the normal service of the source cell is reduced. At the same time, the source cell is prevented from performing a large number of configurations.
  • the base station of the device and the target cell are both a femtocell base station or a home base station; and the source cell is a macro cell.
  • the base station of the device and the target cell may be the same base station, or may be different base stations. Further, the device and the base station of the target cell share a site.
  • the apparatus may further include: a fourth transmitting unit 502, a second receiving unit 505, an executing unit 506, and a second transmitting unit 507.
  • a fourth transmitting unit 502 configured to transmit, at a fourth frequency point, a fourth signal that includes fourth common channel information, where the fourth frequency point is different from a frequency used by the source cell; and the second receiving unit 505 is configured to receive An RRC connection request sent by the user equipment according to the information of the target cell; an executing unit 506, configured to perform an operation of establishing an RRC; and a second sending unit 507, configured to send an RRC connection complete message to the user equipment.
  • the apparatus can also implement the function of the target cell base station, and therefore the fourth transmitting unit 502, the second receiving unit 505, the executing unit 506, and the second transmitting unit 507 are only preferred embodiments, and are not to solve the present invention.
  • the necessary technical features of technical issues. Further description of the apparatus provided with respect to FIG. 5 can be made with reference to the description in the method provided in FIG. 2.
  • a person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • ROM read-only memory
  • RAM random access memory

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Description

种控制用户设备驻留小区的方法和装置 本申请要求于 2010年 6月 30日提交中国专利局、 申请号为 201010218681. 0、发明 名称为 "一种控制用户设备驻留小区的方法和装置"的中国专利申请的优先权， 其全部 内容通过引用结合在本申请中。 技术领域 本发明涉及通信技术领域， 具体涉及一种控制用户设备驻留小区的方法和装置。 背景技术 第三代移动通信系统已经在全球规模商业， 随着用户数量不断增多， 业务量也不断 扩大， 且用户对第三代移动通信网络所提供的服务质量有更高的要求。 由于现有的移动 服务中， 由于室内墙壁等障碍物对信号的损耗， 使得用户设备 （用户设备， User ' s Equipment ) 在室内的信号质量较差， 降低用户的通信质量。
为了解决上述问题， 引入了毫微微蜂窝（Femtocel l )基站技术， Femtocel l基站放 置在用户家中， 节省了机房、 电源、 空调和电路维护等运行成本； 使得室内覆盖性好， Femtocel l基站覆盖半径小， 接入的终端会降低其发射功率， 节省电池， 减少对人体的 辐射。但是，大量的 Femtocel l基站的引入也给现有的宏小区带来新的问题： Femtocel l 基站发射信号对宏小区干扰问题， 及宏小区与 Femtocel l基站所在小区的切换问题。 为 减少 Femtocel l 基站发射信号对宏小区的干扰， 目前大多数的组网方案都推荐 Femtocel l与宏网异频组网； 而异频组网可导致在宏小区信号较好的区域内用户设备无 法向 Femtocel l重选，若强迫用户设备搜索异频邻区又会引入用户设备耗电过多的问题； 而且， 为实现宏小区向 Femtocel l 重选还需要在每一个宏小区内配置由多个不同 Femtocel l基站发射信号产生的小区为其邻区， 这些都成为 Femtocel l基站大量部署的 重大瓶颈。
现有技术中具体可以采用伪导频技术引导用户设备从宏小区切换到 Femt0Cel l。 具 体包括： 比如 A基站是宏小区基站， B基站是 Femtocel l基站， 手机漫游在 A基站下， 使用载频 F2通信。当手机逐渐远离 A基站，靠近 B基站， B基站却只有载频 提供服务。 手机收到的 A基站 F2的信号越来越弱， 而 B基站 信号逐渐增强； 同时 B基站在载频 F2上发射伪导频， 该伪导频仅有能量， 不具备提供业务信道的可能， 即不能被解析。 当 手机处于载频 的 A基站服务之下， 从 A基站移动到 B基站时， 手机会不断检测附近基 站的导频信号强度。 当导频加入门限 （T— ADD ) 参数值超过门限值时， 手机会主动向 A 基站发送导频强度测量消息 （PSMM， Pi lot Sthength Measuring Message) 0 A基站收到 消息后， 查询相邻基站的配置信息， 发现 B基站的 F2的导频信号实际上是伪导频信号， 该伪导频信号不能被解析， 仅是干扰信号， 但 B基站的 可以提供服务信道。 A基站向 手机发送增强型切换定向消息 （EHDM， Extended Hand-off Direction Message ) ， 通 知手机切换到载频 ， 同时将切换参数发送给手机。 手机立刻先切换到 A基站的载频 下， 然后按照软切换的方式从 A基站的载频 切换到 B基站的载频 ， 从而保证的切换 顺利进行。
在对现有技术的研究和实践过程中， 本发明的发明人发现， 根据伪导频重选小区的 方法中， B基站发射的包括有伪导频的信号对 A基站覆盖范围形成的小区就是起同频干 扰作用， 发射伪导频的信号的强度非常大， 而伪导频上不具有提供业务的能力， 仅仅承 载的是能量非常大的噪声信号， 促使用户设备发起异频测量， 因此， 现有技术中同频干 扰增大， 恶化该小区的通信环境， 影响到该小区正常做业务的用户。 同时， 用户设备发 起异频测量所消耗的电量增大， 增大了用户设备对人体的辐射。
用户设备进一步，宏小区内的基站 A中需要配置许多与宏小区相邻的 Femtocell (如 上述举例的 B基站） 的信息， 如： 相邻的 Femtocel l基站发射的伪导频信号， 和相邻的 Femtocel l能够提供业务的导频信息等， 加重宏小区内的基站配置负担， 不利于对宏小 区基站设备的管理。 发明内容
本发明实施例提供一种控制用户设备驻留小区的方法和装置， 实现控制用户设备驻 留到目的小区中， 对于源小区造成的同频干扰小， 同时也避免源小区中的基站设备中大 量的配置。
一种控制用户设备驻留小区的方法， 运用包含源小区、 虚拟小区、 目的小区的通信 系统中， 包括：
虚拟小区的基站在第一频点发射包括有第一公共信道信息的第一信号， 其中， 所述 第一频点与源小区基站发射的信号的频点相同，所述第一频点与目的小区基站发射的信 号的频点不同， 所述第一信号的扰码和源小区的基站发送的信号的扰码不同；
所述第一公共信道信息至少包括： 导频、 位置区号码和异频重选门限； 使得所述用 户设备根据所述第一公共信道信息中导频， 进行同频重选小区操作,重选到虚拟小区； 还使得所述用户设备判断如果所述位置区号码与所述源小区以及所述目的小区的位置 区号码相同， 则根据所述第一公共信道信息中异频重选门限， 进行异频重选小区操作， 重选到目的小区。
一种控制用户设备驻留小区的方法， 运用包含源小区、 虚拟小区、 目的小区的通信 系统中； 包括：
虚拟小区的基站在第二频点发射包括有第二公共信道信息的第二信号， 其中， 所述 第二频点与源小区基站发射的信号的频点相同，所述第二频点与目的小区基站发射的信 号的频点不同， 所述第二信号的扰码与源小区基站发送的信号的扰码不同；
所述第二公共信道信息至少包括： 导频和位置区号码； 使得所述用户设备根据所述 第二公共信道信息中导频， 进行同频重选小区操作， 重选到虚拟小区； 还使得所述用户 设备判断如果所述位置区号码与源小区的位置区号码不相同， 向虚拟小区的基站发送第 一无线资源控制连接请求；
所述虚拟小区的基站接收所述用户设备发送的第一无线资源控制连接请求； 根据预先配置的拒绝无线资源控制连接信息，发送拒绝与所述用户设备建立无线资 源控制连接的响应， 其中， 该响应中还包括： 目的小区的信息， 所述目的小区的信息用 于指示所述用户设备位置更新到所述目的小区。
一种控制用户设备驻留小区的装置，运用包含源小区、目的小区的通信系统中包括: 第一发射单元， 用于在第一频点发射包括有第一公共信道信息的第一信号， 其中， 所述第一频点与源小区基站发射的信号的频点相同，所述第一频点与目的小区基站发射 的信号的频点不同， 所述第一信号的扰码和源小区的基站发送的信号的扰码不同； 所述第一公共信道信息至少包括： 导频、 位置区号码和异频重选门限； 使得所述用 户设备根据所述第一公共信道信息中导频， 进行同频重选小区操作,重选到所述装置发 送的第一信号覆盖的区域所形成的小区； 还使得所述用户设备判断如果所述位置区号码 与所述源小区以及所述目的小区的位置区号码相同， 则根据所述第一公共信道信息中异 频重选门限， 进行异频重选小区操作， 重选到目的小区。
一种控制用户设备驻留小区的装置， 运用包含源小区、 目的小区的通信系统中， 包 括：
第二发射单元， 用于在第二频点发射包括有第二公共信道信息的第二信号， 其中， 所述第二频点与源小区基站发射的信号的频点相同； 所述第二频点与目的小区基站发射 的信号的频点不同， 所述第二信号的扰码与源小区基站发送的信号的扰码不同； 所述第二公共信道信息至少包括： 导频和位置区号码； 使得所述用户设备根据所述 第二公共信道信息中导频， 进行同频重选小区操作， 重选到所述装置发送的第二信号覆 盖的区域所形成的小区； 还使得所述用户设备判断如果所述位置区号码与源小区的位置 区号码不相同， 向所述装置发送第一无线资源控制连接请求；
第一接收单元， 用于接收所述用户设备发送的第一无线资源控制连接请求； 第一发送单元， 根据预先配置拒绝无线资源控制连接信息， 发送拒绝与所述用户设 备建立无线资源控制连接的响应， 其中， 该响应中还包括： 目的小区的信息， 所述目的 小区的信息用于指示所述用户设备位置更新到所述目的小区。
本发明实施例中通过虚拟小区的基站发射包括有公共信道信息的信号，虚拟小区的 信号的频点与源小区基站发射的信号的频点相同， 公共信道信息中包括导频、 位置区号 码和异频重选门限或者公共信道信息中包括导频和位置区号码， 公共信道信息包括的内 容用于指引用户设备进行通过重选驻留到目的小区或者通过位置更新操作驻留到目的 小区。而且由于本发明实施例采用包括有公共信道信息的信号，由于该信号是广播信号， 不同于伪导频， 对于源小区造成的同频干扰小， 降低对源小区正常的业务的干扰。 同时 也避免了源小区的基站进行大量的配置。 附图说明 为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例描述中所需要使用 的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明的一些实施例， 对 于本领域普通技术人员来讲， 在不付出创造性劳动性的前提下， 还可以根据这些附图获 得其他的附图。
图 1是本发明实施例提供的一种控制用户设备驻留小区的方法流程图；
图 2是本发明实施例提供的另一种控制用户设备驻留小区的方法流程图； 图 3是用户设备从宏小区移动到 Femtocel l时的小区覆盖示意图；
图 4是本发明实施例提供的一种控制用户设备驻留小区的装置示意图；
图 5是本发明实施例提供的另一种控制用户设备驻留小区的装置示意图。 具体实肺式 本发明实施例提供一种控制用户设备驻留小区的方法用户设备， 以下分别进行详细 说明。 图 1所示为本发明实施例提供的一种控制用户设备驻留小区的方法流程图。 该方法 运用包含源小区、 虚拟小区、 目的小区的通信系统中。 在该方法中虚拟小区的基站在第 一频点发射包括有第一公共信道信息的第一信号， 该第一频点是与源小区基站发射的信 号使用的频点相同， 该第一信号的扰码和源小区的基站发射的信号的扰码不同。 用户设 备接收到该第一信号后， 使得用户设备可以识别出虚拟小区。 但是， 该虚拟小区不能为 用户设备提供业务， 该虚拟小区的基站和目的小区的基站可以是同一个基站， 或者是不 同的基站。 如果是不同的基站， 则这两个基站可以是共站址。 这里所说的共站址可以是 指所覆盖的小区的中心位置相同或者中心位置相近的两个基站。虚拟小区的基站和目的 小区的基站的发射信号可以是不相同的。 目的小区的基站发射的信号所采用的频点与源 小区基站发射的信号所使用的频点不同， 目的小区的基站可以为进入该小区的用户设备 提供业务。 当用户设备从的源小区进入到虚拟小区， 由于虚拟小区和目的小区是共站址 的， 则进入虚拟小区的覆盖范围也很可能进入到目的小区的覆盖范围， 因为虚拟小区和 目的小区的覆盖范围是可以是重合的，用户设备可以首先进行同频测量，重选虚拟小区， 再根据虚拟小区基站发射的信号进行异频重选小区， 使得用户设备重选驻留的小区为目 的小区。 其中， 为了便于理解， 上述说明的源小区可以理解为宏小区， 目的小区可以理 解为 Femtocel l , 用户设备从源小区进入到目的小区， 可以理解为从宏小区进入到 Femtocel l o 下面对图 1提供的方法做具体说明， 该方法包括： 步骤 S 1 : 虚拟小区的基站在第一频点发射包括有第一公共信道信息的第一信号， 其 中， 第一频点与源小区基站发射的信号的频点相同， 第一频点与目的小区基站发射的信 号的频点不同， 第一信号的扰码和源小区的基站发送的信号的扰码不同； 第一公共信道 信息至少包括： 导频、 位置区号码和异频重选门限； 使得用户设备根据第一公共信道信 息中导频， 进行同频重选小区操作,重选到虚拟小区； 还使得用户设备判断如果位置区 号码与源小区以及目的小区的位置区号码相同， 则根据第一公共信道信息中异频重选门 限， 进行异频重选小区操作， 重选到目的小区。 在步骤 S 1中， 该虚拟小区的基站不为进入该虚拟小区的用户设备提供业务。 虚拟小 区的基站发射第一信号中包括的第一公共信道信息， 具体可以包括： 公共导频信道 ( CPICH, Common Pi lot Channel )， 次公共控制物理信道（SCCPCH, Subordinate Common Control Phys ical Channel )，主公共控制物理信道 ( PCCPCH, Principal Common Control Physical Channel ) ,同步信道（SCH， Synchronous Channel )，分组随机接入信道（PRACH， Packet Randem Access Channel ) ， 捕获指不信道 (AICH， Acquisition Indication Channel ) 等信息。 虚拟小区的基站发射的第一信号是广播信号，进入虚拟小区的用户设备都可以接收 到该第一信号。且接收到的用户设备根据第一信号的扰码不同与源小区基站发射的信号 的扰码， 使得用户设备识别出虚拟小区。 用户设备根据第一信号中第一公共信道信息的 导频， 测量出该接收到第一公共信道信息中导频， 根据预置的同频重选规则， 进行同频 重选小区的操作。 用户设备中的重选小区的操作可以是： 用户设备进行同频小区测量， 在本实施例中用户设备中设置虚拟小区为服务小区， 设置完成就完成重选到虚拟小区的 操作。 当用户设备有业务处理时， 用户设备才与虚拟小区建立连接。 用户设备还根据第一信号中第一公共信道信息包含的位置区号码，判断是否与源小 区及所述目的小区的位置区号码相同， 当判断源小区、 虚拟小区、 及目的小区的位置区 号码相同， 由于位置区号相同， 所以只要用户设备完成重选到目的小区操作则实际上就 完成了驻留到目的小区操作。具体可以为用户设备根据第一公共信道信息中异频重选门 限， 进行异频重选小区操作， 在本实施例中用户设备设置目的小区为服务小区， 完成重 选到目的小区操作， 也即完成驻留到目的小区的操作。 其中， 根据重选门限判断是否进行异频小区重选的具体操作可以是， 用户设备判断 接收到的信号强度是否小于重选门限， 如果小于该重选门限， 则进行异频小区重选。 还需要说明的是， 在源小区基站将该虚拟小区配置为该源小区的邻区。 当用户设备 进行重选测量时， 如果发现虚拟小区的信号更好时， 可以重选到该虚拟小区。 进一步， 该方法还可以包括： 步骤 S2: 目的小区的基站在第三频点发射包括有第三公共信道信息的第三信号， 其 中， 第三频点与源小区所用的频点不同。 该步骤只是为了方便理解本发明实施例技术方 案而进行的描述， 并非是解决本发明实施例技术问题的必要步骤。 其中， 目的小区的基站在第三频点发射包括有第三公共信道信息的第三信号， 使得 该第三信号覆盖的范围所形成的小区能够为进入该范围的用户设备提供业务。 上述说明的第一信号和第三信号都为广播信号，在目的小区基站覆盖范围内的用户 设备都可以接收到。 目的小区的基站和虚拟小区的基站可以是同一个基站， 也可以是不 同的基站。 虚拟小区和目的小区可以共站址。 上述虚拟小区的基站， 或者目的小区的基站为毫微微蜂窝基站或者家庭基站； 上述 源小区可以为宏小区。 当用户设备从源小区进入到虚拟小区， 其中， 目的小区与虚拟小区有部分重叠， 或 者完全重叠， 所以用户设备也很可能同时进入到了目的小区。 用户设备根据第一信号中 的导频， 进行同频测量， 根据源小区中预先配置邻居信息中包括的邻区的频点和扰码信 息， 选择该虚拟小区为服务小区， 用户设备从接收到的第一信号中获取位置区号码和异 频重选门限判断是否进行异频测量重选小区， 当用户设备判断第一信号中位置区号码与 源小区以及目的小区的位置区号码相同， 则根据所述第一公共信道信息中异频重选门 限， 进行异频重选小区操作， 用户设备选择目的小区基站发射的第三信号所覆盖的范围 形成的能够提供业务的小区为用户设备驻留小区。 还需要说明的是， 在源小区中基站还需要配置同频测量门限， 用途是当用户设备接 收到源小区中基站发送的同频测量门限后， 根据用户设备对网络侧的测量结果， 选择是 否进行同频测量重选小区， 还需要理解的是， 通常用户设备是实时在执行同频测量的。 而且， 在虚拟小区的基站还需要配置异频测量门限， 用途是当用户设备接收到虚拟小区 中基站发送的异频测量门限后， 根据位置区号码和用户设备对网络侧的测量结果， 选择 是否进行异频测量重选小区。 当然通常每个小区中基站即配置同频测量门限， 也配置异 频测量门限， 用户设备根据对网络侧的测量结果选择所执行的测量。 在本实施例中用户 设备在源小区中可以是实时的执行同频测量重选小区， 当用户设备重选到虚拟小区后， 可以根据位置区号码和异频测量门限， 进行异频测量， 重选到目的小区。 其中， 虚拟小 区的基站和目的小区的基站可以是相同的， 即都为 Femtocel l基站。 本发明实施例中通过虚拟小区的基站发射包括有公共信道信息的信号，虚拟小区的 信号的频点与源小区基站发射的信号的频点相同的， 公共信道信息中包括导频、 位置区 号码和异频重选门限， 公共信道信息包括的内容用于指引用户设备进行通过重选驻留到 目的小区。 而且由于本发明实施例采用包括有公共信道信息的信号， 由于该信号是广播 信号，不同于伪导频，对于源小区造成的同频干扰小， 降低对源小区正常的业务的干扰。 同时也避免了对源小区基站进行大量的配置。 进一步， 不同的虚拟小区的配置可以是相同的， 例如： 不同的虚拟小区发射的信号 的频点和扰码都可以是相同的， 该频点是与源小区基站发射的信号的频点相同的。 不同 的虚拟小区发射的信号中关于公共信道信息的配置是不同， 具体不同可以体现在， 公共 信道信息中包括的虚拟小区的异频邻区信息是不同的，每个虚拟小区的异频邻区信息都 对应不同的目的小区。进入虚拟小区的用户设备根据虚拟小区的公共信道信息中包括的 异频邻区信息重选到对应的目的小区中。 图 2所示为本发明实施例提供的一种控制用户设备驻留小区的方法流程图。 该方法 包括： 步骤 A1 : 虚拟小区的基站在第二频点发射包括有第二公共信道信息的第二信号， 其 中， 所述第二频点与源小区基站发射的信号的频点相同， 所述第二频点与目的小区基站 发射的信号的频点不同， 所述第二信号的扰码与源小区基站发送的信号的扰码不同； 所 述第二公共信道信息至少包括： 导频和位置区号码； 使得所述用户设备根据所述第二公 共信道信息中导频， 具体的可以是测量出该接收到第二公共信道信息中导频的强度， 根 据预置的同频重选规则， 进行同频重选小区操作， 重选到虚拟小区； 还使得所述用户设 备判断如果所述位置区号码与源小区的位置区号码不相同， 向虚拟小区的基站发送第一 无线资源控制连接请求； 其中， 在步骤 A1中第二公共信道信息中的位置区号码与源小区的位置区号码不同， 使得用户设备在判断出如果虚拟小区和源小区的位置区号码不同，发起与虚拟小区基站 的无线资源控制 ( RRC , Radio Resource Control ) 连接。 步骤 A2 : 虚拟小区的基站接收用户设备根据第二公共信道信息发送的第一无线资源 控制 （RRC， Radio Resource Control ) 连接请求； 步骤 A3 : 虚拟小区的基站根据预先配置的拒绝无线资源控制连接信息， 发送拒绝与 该用户设备建立 RRC连接的响应， 其中， 该响应中还包括： 目的小区的信息， 该目的小 区的信息用来指示用户设备位置更新 ( LAU， Locat ion Aera Update ) 到该目的小区。 当用户设备从源小区进入到虚拟小区中时，用户设备进行同频测量重选到虚拟小区 中。 用户设备根据接收到的第二信号中包括的第二公共信道信息， 可以从第二公共信道 信息中得知该虚拟小区的位置区号码 （LAC， Locat ion Aera Code ) ， 判断出该虚拟小 区的 LAC与该用户设备的源小区的 LAC不同， 就发起到虚拟小区的 RRC连接， 即发送 RRC连 接请求。 图 1所示的方法中， 虚拟小区的基站下发的第一公共信道信息中 LAC与用户设备 的源小区的 LAC是相同的， 因此， 不会导致用户设备发起 RRC连接， 换句话说， 图 1、 图 2 所示的两种方法中对虚拟小区配置的 LAC参数是不同。虚拟小区的基站， 接收到第一 RRC 连接请求后， 拒绝与该用户设备建立 RRC连接， 发送拒绝与该用户设备建立 RRC连接的响 应， 因此， 用户设备与虚拟小区建立 RRC连接失败。 用户设备根据拒绝与该用户设备建 立 RRC连接的响应中包括的目的小区的信息， 该目的小区的信息用来指示用户设备位置 更新到该目的小区， 用户设备发送 RRC连接请求到目的小区， 其中， 目的小区的基站可 以与虚拟小区的基站是相同的基站， 也可以是不同， 如果是不同的基站， 两个基站也可 以是共站址的。 通常， 两个基站覆盖范围是有重叠的。 进一步， 该方法还优选的可以包括： 步骤 A4: 目的小区的基站在第四频点发射包括有第四公共信道信息的第四信号， 其 中， 第四频点与源小区所用的频点不同； 步骤 A5: 目的小区的基站接收用户设备发送的第二 RRC连接请求， 执行建立 RRC的操 作， 发送建立 RRC连接完成消息给用户设备。 需要说明的是， 用户设备发送第一无线资源控制连接请求， 用于发起建立用户设备 与虚拟小区之间的无线资源控制连接； 用户设备发送第二无线资源控制连接请求， 用于 发起建立用户设备与目的小区之间的无线资源控制连接。 当用户设备与虚拟小区建立 RRC连接失败后， 根据虚拟小区的基站发送的目的小区 的信息， 向目的小区发送第二 RRC连接请求， 且与该目的小区建立了 RRC连接。 其中， 该 虚拟小区和目的小区可以是由相同的基站实现的， 具体可以都是由 Femtocel l基站实现 的。 该用户设备通过与目的小区建立 RRC连接， 用户设备将位置更新到目的小区， 则完 成了用户设备驻留到该目的小区中。 通过上述对图 2所示的一种控制用户设备驻留小区的方法的说明， 该方法通过虚拟 小区的基站发射包括有公共信道信息的信号，虚拟小区的信号的频点与源小区基站发射 的信号的频点相同的， 公共信道信息中包括公共信道信息中包括导频和位置区号码， 公 共信道信息包括的内容用于指引用户设备通过执行位置更新操作驻留到目的小区。而且 由于本发明实施例采用包括有公共信道信息的信号， 由于该信号是广播信号， 不同于伪 导频， 对于源小区造成的同频干扰小， 降低对源小区正常的业务的干扰。 同时也避免了 源小区的基站进行大量的配置。 通过上述对图 1、 图 2所示的一种控制用户设备驻留小区的方法的说明， 当用户设备 从源小区移动目的小区过程中， 例如源基站为宏基站， 虚拟小区基站和目的小区在本举 例中为相同的基站， 都为 Femtocel l基站时， 该方法具体可以是： 如图 3所示， 用户设备 从宏小区移动到 Femtocell过程中， Femtocel l基站， 可以是家庭基站， 在频点 f2上发射 包括有公共信道信息的信号， 其中频点 f2与宏小区使用的频点相同， 该家庭基站在该频 点上不能提供为用户设备提供业务， 而家庭基站可以在不同于宏小区使用的频点的另一 频点比如 上为用户设备提供业务。 Femtocel l基站在与宏小区使用的频点相同的频点 f2上发射的信号覆盖的区域所形成的虚拟小区，控制用户设备进行同频测量重选小区使 得重选到该虚拟小区， 该 Femtocel l基站控制用户设备进行异频重选或者向 Femtocel l基 站发送 RRC连接请求从而使得用户设备重选到目的小区或位置更新到目的小区， 该目的 小区为 Femtocel l基站在频点 上发射的信号覆盖的区域所形成的小区。 其中， 虚拟小 区对重选到虚拟小区的用户设备的引导操作可以不限于上述图 1、 图 2中的说明， 还可以 是其它。 此处不应该理解为穷举。 图 4所示为本发明实施例提供的一种控制用户设备驻留小区的装置的示意图， 该装 置运用包含源小区、 目的小区的通信系统中， 该装置包括： 第一发射单元 401 其中， 第一发射单元 401， 用于在第一频点发射包括有第一公共信道信息的第一信 号， 其中， 第一频点与源小区基站发射的信号的频点相同， 第一频点与目的小区基站发 射的信号的频点不同， 第一信号的扰码和源小区的基站发送的信号的扰码不同； 第一公 共信道信息至少包括： 导频、 位置区号码和异频重选门限； 使得所述用户设备根据所述 第一公共信道信息中导频， 进行同频重选小区操作,重选到所述装置发送的第一信号覆 盖的区域所形成的小区； 还使得所述用户设备判断如果所述位置区号码与所述源小区以 及所述目的小区的位置区号码相同， 则根据所述第一公共信道信息中异频重选门限， 进 行异频重选小区操作， 重选到目的小区。 本发明实施例中该装置通过发射包括有公共信道信息的信号，虚拟小区的信号的频 点与源小区基站发射的信号的频点相同的， 公共信道信息中包括导频、 位置区号码和异 频重选门限， 公共信道信息包括的内容用于指引用户设备进行通过重选驻留到目的小 区。 而且由于本发明实施例采用包括有公共信道信息的信号， 由于该信号是广播信号， 不同于伪导频， 对于源小区造成的同频干扰小， 降低对源小区正常的业务的干扰。 同时 也避免了源小区基站进行大量的配置。 进一步， 该装置为毫微微蜂窝基站或者家庭基站， 该装置和目的小区的基站可以是 同一个基站， 也可以是不同的基站。 进一步，该装置为毫微微蜂窝基站或者家庭基站，该装置和目的小区的基站共站址。 进一步， 该装置还可以包括： 第三发射单元 402， 用于在第三频点发射包括有第三 公共信道信息的第三信号， 其中， 第三频点与源小区所用的频点不同。 通过增加第三发射单元 402使得该虚拟小区的基站也可以实现目的小区基站的功 能， 因此第三发射单元 402只是优选的实施例， 不是解决本发明技术问题的必要的技术 特征。
关于图 4提供的装置的更多说明可以图 1的方法中说明的虚拟小区的基站。 图 5所示为本发明实施例提供的一种控制用户设备驻留小区的装置的示意图， 该装 置可以具体是家庭基站， 该装置包括： 第二发射单元 501， 第一接收单元 503， 和第一发 送单元 504 其中， 第二发射单元 501， 用于在第二频点发射包括有第一公共信道信息的第二信 号， 其中， 所述第二频点与源小区使用的频点相同； 所述第二频点与目的小区基站发射 的信号的频点不同， 所述第二信号的扰码与源小区基站发送的信号的扰码不同； 所述第 二公共信道信息至少包括： 导频和位置区号码； 使得所述用户设备根据所述第二公共信 道信息中导频， 进行同频重选小区操作， 重选到所述装置发送的第二信号覆盖的区域所 形成的小区； 还使得所述用户设备判断如果所述位置区号码与源小区的位置区号码不相 同， 向所述装置发送第一无线资源控制连接请求； 第一接收单元 503， 用于所述用户设备发送的第一无线资源控制连接请求； 第一发送单元 504， 根据预先配置拒绝无线资源控制连接信息， 发送拒绝与所述用 户设备建立无线资源控制连接的响应， 其中， 该响应中还包括： 目的小区的信息， 所述 目的小区的信息用于指示所述用户设备位置更新到所述目的小区。 本发明实施例中该装置通过发射包括有公共信道信息的信号，虚拟小区的信号的频 点与源小区基站发射的信号的频点相同的， 公共信道信息中包括导频、 位置区号码和异 频重选门限或者公共信道信息中包括导频和位置区号码， 公共信道信息包括的内容用于 指引用户设备通过位置更新操作驻留到目的小区。而且由于本发明实施例采用包括有公 共信道信息的信号， 由于该信号是广播信号， 不同于伪导频， 对于源小区造成的同频干 扰小， 降低对源小区正常的业务的干扰。 同时也避免了源小区进行大量的配置。 进一步， 该装置和目的小区的基站都为毫微微蜂窝基站或者家庭基站； 所述源小区 为宏小区。 进一步， 所述装置和目的小区的基站可以是同一个基站， 也可以是不同的基站。 进一步， 所述装置和目的小区的基站共站址。 进一步， 该装置还可以包括： 第四发射单元 502， 第二接收单元 505， 执行单元 506， 和第二发送单元 507。 第四发射单元 502， 用于在第四频点发射包括有第四公共信道信息的第四信号， 其 中， 第四频点与源小区所用的频点不同； 第二接收单元 505， 用于接收用户设备根据目的小区的信息而发送的 RRC连接请求； 执行单元 506， 用于执行建立 RRC的操作； 第二发送单元 507， 用于发送建立 RRC连接完成消息给用户设备。 通过增加上述单元， 使得该装置还可以实现目的小区基站的功能， 因此第四发射单 元 502， 第二接收单元 505， 执行单元 506， 和第二发送单元 507只是优选的实施例， 不是 解决本发明技术问题的必要的技术特征。 有关图 5提供的装置的更多说明可以参考图 2提供的方法中的说明。 本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程， 是可以通 过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质 中， 该程序在执行时， 可包括如上述各方法的实施例的流程。 其中， 所述的存储介质可 为磁碟、 光盘、 只读存储记忆体（Read-Only Memory, ROM)或随机存储记忆体（Random Access Memory, RAM) 等。 以上对本发明实施例进行了详细介绍，本文中应用了具体实施方式对本发明进行了 阐述， 以上实施例的说明只是用于帮助理解本发明的方法及设备； 同时， 对于本领域的 一般技术人员， 依据本发明的思想， 在具体实施方式及应用范围上均会有改变之处， 综 上所述， 本说明书内容不应理解为对本发明的限制。

Claims

权利要求
1、 一种控制用户设备驻留小区的方法， 其特征在于， 运用包含源小区、 虚拟小区、 目的小区的通信系统中， 包括：
虚拟小区的基站在第一频点发射包括有第一公共信道信息的第一信号， 其中， 所述 第一频点与源小区基站发射的信号的频点相同，所述第一频点与目的小区基站发射的信 号的频点不同， 所述第一信号的扰码和源小区的基站发送的信号的扰码不同；
所述第一公共信道信息至少包括： 导频、 位置区号码和异频重选门限； 使得所述用 户设备根据所述第一公共信道信息中导频， 进行同频重选小区操作,重选到虚拟小区； 还使得所述用户设备判断如果所述位置区号码与所述源小区以及所述目的小区的位置 区号码相同， 则根据所述第一公共信道信息中异频重选门限， 进行异频重选小区操作， 重选到目的小区。
2、 根据权利要求 1所述的方法， 其特征在于，
所述虚拟小区的基站为毫微微蜂窝基站或者家庭基站；
所述目的小区的基站为毫微微蜂窝基站或者家庭基站；
所述源小区为宏小区。
3、 根据权利要求 2所述的方法， 其特征在于， 所述目的小区的基站和虚拟小区的基 站是同一个基站， 或者是不同的基站。
4、 根据权利要求 2所述的方法， 其特征在于， 所述虚拟小区和目的小区共站址。
5、 一种控制用户设备驻留小区的方法， 其特征在于， 运用包含源小区、 虚拟小区、 目的小区的通信系统中； 包括：
虚拟小区的基站在第二频点发射包括有第二公共信道信息的第二信号， 其中， 所述 第二频点与源小区基站发射的信号的频点相同，所述第二频点与目的小区基站发射的信 号的频点不同， 所述第二信号的扰码与源小区基站发送的信号的扰码不同；
所述第二公共信道信息至少包括： 导频和位置区号码； 使得所述用户设备根据所述 第二公共信道信息中导频， 进行同频重选小区操作， 重选到虚拟小区； 还使得所述用户 设备判断如果所述位置区号码与源小区的位置区号码不相同， 向虚拟小区的基站发送第 一无线资源控制连接请求；
所述虚拟小区的基站接收所述用户设备发送的第一无线资源控制连接请求； 根据预先配置的拒绝无线资源控制连接信息，发送拒绝与所述用户设备建立无线资 源控制连接的响应， 其中， 该响应中还包括： 目的小区的信息， 所述目的小区的信息用 于指示所述用户设备位置更新到所述目的小区。
6、 根据权利要求 5所述的方法， 其特征在于， 所述虚拟小区的基站为毫微微蜂窝基 站或者家庭基站； 所述目的小区的基站为毫微微蜂窝基站或者家庭基站；
所述源小区为宏小区。
7、 根据权利要求 6所述的方法， 其特征在于， 所述虚拟小区的基站和目的小区的基 站可以是同一个基站， 也可以是不同的基站。
8、 根据权利要求 6所述的方法， 其特征在于， 所述虚拟小区和目的小区共站址。
9、 一种控制用户设备驻留小区的装置， 其特征在于， 运用包含源小区、 目的小区 的通信系统中包括：
第一发射单元， 用于在第一频点发射包括有第一公共信道信息的第一信号， 其中， 所述第一频点与源小区基站发射的信号的频点相同，所述第一频点与目的小区基站发射 的信号的频点不同， 所述第一信号的扰码和源小区的基站发送的信号的扰码不同； 所述第一公共信道信息至少包括： 导频、 位置区号码和异频重选门限； 使得所述用 户设备根据所述第一公共信道信息中导频， 进行同频重选小区操作,重选到所述装置发 送的第一信号覆盖的区域所形成的小区； 还使得所述用户设备判断如果所述位置区号码 与所述源小区以及所述目的小区的位置区号码相同， 则根据所述第一公共信道信息中异 频重选门限， 进行异频重选小区操作， 重选到目的小区。
10、 根据权利要求 9所述的装置， 其特征在于， 所述装置为毫微微蜂窝基站或者家 庭基站； 所述目的小区的基站为毫微微蜂窝基站或者家庭基站；
所述源小区为宏小区。
11、 根据权利要求 10所述的装置， 其特征在于， 所述装置和目的小区的基站可以是 同一个基站， 也可以是不同的基站。
12、根据权利要求 10所述的装置，其特征在于，所述装置和目的小区的基站共站址。
13、 一种控制用户设备驻留小区的装置， 其特征在于， 运用包含源小区、 目的小区 的通信系统中， 包括：
第二发射单元， 用于在第二频点发射包括有第二公共信道信息的第二信号， 其中， 所述第二频点与源小区基站发射的信号的频点相同； 所述第二频点与目的小区基站发射 的信号的频点不同， 所述第二信号的扰码与源小区基站发送的信号的扰码不同； 所述第二公共信道信息至少包括： 导频和位置区号码； 使得所述用户设备根据所述 第二公共信道信息中导频， 进行同频重选小区操作， 重选到所述装置发送的第二信号覆 盖的区域所形成的小区； 还使得所述用户设备判断如果所述位置区号码与源小区的位置 区号码不相同， 向所述装置发送第一无线资源控制连接请求；
第一接收单元， 用于接收所述用户设备发送的第一无线资源控制连接请求； 第一发送单元， 根据预先配置拒绝无线资源控制连接信息， 发送拒绝与所述用户设 备建立无线资源控制连接的响应， 其中， 该响应中还包括： 目的小区的信息， 所述目的 小区的信息用于指示所述用户设备位置更新到所述目的小区。
14、 根据权利要求 13所述的装置， 其特征在于， 所述装置为毫微微蜂窝基站或者家 庭基站； 所述目的小区的基站为毫微微蜂窝基站或者家庭基站；
所述源小区为宏小区。
15、 根据权利要求 14所述的装置， 其特征在于， 所述装置和目的小区的基站可以是 同一个基站， 也可以是不同的基站。
16、根据权利要求 14所述的装置，其特征在于，所述装置和目的小区的基站共站址。
PCT/CN2011/075671 2010-06-30 2011-06-13 一种控制用户设备驻留小区的方法和装置 WO2012000382A1 (zh)

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