WO2012041079A1 - 一种邻区配置信息更新方法及系统 - Google Patents

一种邻区配置信息更新方法及系统 Download PDF

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Publication number
WO2012041079A1
WO2012041079A1 PCT/CN2011/075975 CN2011075975W WO2012041079A1 WO 2012041079 A1 WO2012041079 A1 WO 2012041079A1 CN 2011075975 W CN2011075975 W CN 2011075975W WO 2012041079 A1 WO2012041079 A1 WO 2012041079A1
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Prior art keywords
cell
configuration information
base station
signaling
change
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PCT/CN2011/075975
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English (en)
French (fr)
Inventor
陈中明
邓云
黄亚达
施小娟
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中兴通讯股份有限公司
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Publication of WO2012041079A1 publication Critical patent/WO2012041079A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835Determination of neighbour cell lists

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a neighboring area configuration information updating method and system. Background technique
  • a user equipment In a mobile communication system, a user equipment (UE) can be moved between cells. To ensure service continuity and ensure service quality, after the user establishes a service, the UE needs to perform measurement according to the configuration of the serving base station, and The serving base station reports the measurement report that meets the configuration requirements of the serving base station, so that the serving base station can perform reasonable radio resource management according to the measurement report reported by the UE and other Radio Resource Management (RRM) algorithms.
  • RRM Radio Resource Management
  • the measurement configuration received by the UE in the connected state includes one or more measurement tasks, that is, a measurement identity, and each measurement identifier includes a measurement object (Measurement Object) and a corresponding upper report configuration (Reporting Configuration).
  • one measurement object is a carrier frequency
  • the configuration of the measurement object includes frequency information, a list of neighboring cells on the frequency, and neighboring area configuration information (NeighCellConfig).
  • the system message also includes a list of neighboring cells on each frequency, and neighboring cell configuration information (NeighCellConfig), where System Information Block 3 (SIB3) contains the same cell as the cell broadcasting the system message.
  • SIB3 System Information Block 3
  • NeighCellConfig In-system neighbor information of the frequency and neighboring area configuration information (NeighCellConfig), NeighCellConfig is set with reference to the cell broadcasting the system message; SIB5 includes intra-system neighbor information and neighboring cells at different frequencies from the cell broadcasting the system message.
  • the configuration information sets NeighCellConfig with reference to the cell broadcasting the system message.
  • the neighboring area configuration information is defined as: In FDD, NeighCellConfig indicates the similarity between the MBMS Single Frequency Network (MBSFN) subframe distribution of the neighboring cell and the MBSFN subframe distribution of the serving cell.
  • MBSFN MBMS Single Frequency Network
  • the definition 00 indicates that the MBSFN subframe distribution of all neighboring cells is the same as the MBSFN subframe distribution of the serving cell; 01 indicates that there is no MBSFN subframe configuration in all neighboring cells; 10 indicates MBSFN subframes of all neighboring cells.
  • the distribution is the same as the MBSFN subframe allocation of the serving cell, or the MBSFN subframe allocation of all neighboring cells is a subset of the MBSFN subframe allocations of all neighbour cells are identical to or subsets of that in The serving cell ).
  • NeighCellConfig indicates the similarity between the uplink and downlink time slot distribution of the neighboring cell and the uplink and downlink time slot distribution of the serving cell.
  • the definitions of 00, 01, and 10 in the existing protocol indicate the uplink and downlink time slot distribution of all neighboring cells.
  • the uplink and downlink time slot distributions of the serving cell are the same; 11 indicates that the uplink and downlink time slot distribution of the neighboring cell is different from the uplink and downlink time slot distribution of the serving cell.
  • Configuring the neighboring area configuration information in the measurement object is to guide the measurement of the UE, and prevent the UE from measuring the error caused by the measurement of the subframe in which the MBSFN is transmitted (the partial symbol Symbols in the subframe is used to transmit the MBMS service) or the measurement of the uplink time slot. .
  • the UE may determine the subframe to be measured. For the MBSFN subframe, the UE may measure the symbols (Signs) that do not send the MBMS service.
  • the UE can work on multiple Component Carriers or multiple cells simultaneously, and the base station can use the multiple component carriers or multiple cells to simultaneously provide a larger bandwidth service for the UE.
  • One of the multiple cells working in the UE provides the UE with the NAS layer information, such as the PLMN, the Cell Global Identifier (CGI), and the Tracking Area Code (TAC).
  • the cell also provides security for the UE.
  • the input parameters of the algorithm the UE only receives the system message and the paging message of the cell, and the cell is called a primary cell (PCell) or a primary serving cell.
  • the other cells working by the UE are called secondary cells (SCells) or secondary serving cells, and these secondary cells provide resources for the UE.
  • SCells secondary cells
  • the UE can only work in one cell.
  • the neighboring cell configuration information of the neighboring cells at all frequency points is referenced by the cell (the only serving cell) in which the UE works.
  • the neighboring cell configuration information (NeighCellConfig) of the neighboring cell at the frequency of the cell is referenced by the same-frequency serving cell (PCell or SCell), and other frequencies (referring to the non-UE working cell) NeighCellConfig of the neighboring cell of the frequency) is referenced to PCell.
  • the cell (PCell, or PCell and SCell(s)) that the UE works often changes (adds or deletes the cell), and the NeighCellConfig of the neighboring cell at the frequency of the changed cell is referenced.
  • the service area will change.
  • how to handle NeighCellConfig in the measurement configuration at this time does not give a solution to the existing protocol. Summary of the invention
  • the main object of the present invention is to provide a method and system for updating neighboring cell configuration information.
  • the UE can update the neighboring cell configuration information when the cell is changed, so that the measurement can be correctly performed after the cell is changed.
  • a neighboring area configuration information updating method includes: when a cell change occurs, the UE updates the neighboring area configuration information stored by the UE according to the signaling from the base station.
  • the UE updates the neighboring area configuration information stored by the UE according to the signaling from the base station to: when a cell change occurs, the base station sends a change notification signaling to the UE, where the change notification signaling carries at least a cell change situation;
  • the UE After receiving the change notification signaling, the UE updates the neighbor configuration information stored by itself according to the cell system message.
  • the UE updates the neighboring cell configuration information stored by the UE according to the cell system message to: when the deleted cell is the secondary cell, or the added/deleted cell is the primary cell, the UE reports the system message of the current primary cell.
  • the neighboring area configuration information stored by itself is updated; When the added cell is a secondary cell, the UE updates the neighboring area configuration information stored by the UE according to the system message of the added cell.
  • the UE updates the neighboring cell configuration information stored by the UE according to the signaling from the base station to: when the secondary cell is changed, the base station sends the change notification signaling to the UE, where the change notification signaling carries at least the cell change situation and changes the cell.
  • the UE updates the neighbor configuration information stored by itself according to the change notification signaling.
  • the UE updates the neighboring area configuration information stored by the UE according to the signaling from the base station to: when a cell change occurs, the base station sends a change notification signaling to the UE, where the change notification signaling carries at least a cell change situation;
  • the RRC signaling When the base station sends the RRC signaling to the UE, and the changed cell is the secondary cell, the RRC signaling carries at least the neighboring cell configuration information at the frequency point of the changed cell indicated by the change notification signaling; The RRC signaling carries at least the neighboring area configuration information at the frequency point of the cell before and after the change, and the neighboring area configuration information at the frequency of the changed unconfigured serving cell;
  • the UE updates the neighbor configuration information stored by itself according to the change notification signaling and the RRC signaling.
  • the UE updates the neighboring cell configuration information stored by the UE according to the signaling from the base station to: when the added/deleted cell is the secondary cell, the UE obtains the frequency of the added/deleted cell from the signaling from the base station.
  • the neighboring area configuration information is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the added/deleted cell stored by the self.
  • the UE When the added/deleted cell is the primary cell, the UE obtains the neighboring area configuration information at the frequency of the primary cell before and after the change from the signaling from the base station, and is used to cover the storage accordingly.
  • the neighboring area configuration information in the measurement object corresponding to the frequency point of the changed primary cell is changed, and the UE obtains the neighboring cell configuration on the frequency point of the changed unconfigured cell from the signaling from the base station.
  • the information is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the changed unconfigured cell stored in the self.
  • a neighboring area configuration information updating system includes: a base station and a UE; wherein
  • the base station is configured to send a signaling to notify the UE when a cell change occurs;
  • the UE is configured to update the neighbor configuration information stored by the base station according to the signaling from the base station.
  • the UE updates the neighboring area configuration information stored by the UE according to the signaling from the base station to: when a cell change occurs, the base station sends a change notification signaling to the UE, where the change notification signaling carries at least a cell change situation;
  • the UE After receiving the change notification signaling, the UE updates the neighbor configuration information stored by itself according to the cell system message.
  • the UE updates the neighboring cell configuration information stored by the UE according to the cell system message to: when the deleted cell is the secondary cell, or the added/deleted cell is the primary cell, the UE reports the system message of the current primary cell.
  • the neighboring area configuration information stored by itself is updated;
  • the UE updates the neighboring area configuration information stored by the UE according to the system message of the added cell.
  • the UE updates the neighboring cell configuration information stored by the UE according to the signaling from the base station to: when the secondary cell is changed, the base station sends the change notification signaling to the UE, where the change notification signaling carries at least the cell change situation and changes the cell.
  • the UE updates the neighbor configuration information stored by itself according to the change notification signaling.
  • the UE updates the neighboring area configuration information stored by the UE according to the signaling from the base station to: when the cell change occurs, the base station sends the change notification signaling to the UE, where the change notification signaling carries at least the cell change status;
  • the RRC signaling When the base station sends the RRC signaling to the UE, and the changed cell is the secondary cell, the RRC signaling carries at least the neighboring cell configuration information at the frequency point of the changed cell indicated by the change notification signaling; The RRC signaling carries at least the neighboring area configuration information at the frequency point of the cell before and after the change, and the neighboring area configuration information at the frequency of the changed unconfigured serving cell;
  • the UE updates the neighbor configuration information stored by itself according to the change notification signaling and the RRC signaling.
  • the UE updates the neighboring cell configuration information stored by the UE according to the signaling from the base station to: when the added/deleted cell is the secondary cell, the UE obtains the frequency of the added/deleted cell from the signaling from the base station.
  • the neighboring area configuration information is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the added/deleted cell stored by the self.
  • the UE When the added/deleted cell is the primary cell, the UE obtains the neighboring area configuration information on the frequency of the primary cell before and after the change from the signaling from the base station, and is used to cover the pre-change and post-change of the storage.
  • the neighboring area configuration information in the measurement object corresponding to the frequency point of the primary cell is located, and the UE obtains the neighboring area configuration information at the frequency point of the changed unconfigured cell from the signaling from the base station, and is used to cover itself.
  • the neighboring area configuration information in the measurement object corresponding to the frequency point of the stored unconfigured cell is located, and the UE obtains the neighboring area configuration information at the frequency point of the changed unconfigured cell from the signaling from the base station, and is used to cover itself.
  • the UE when a cell change occurs, the UE updates the neighboring cell configuration information stored by itself according to the signaling from the base station.
  • the UE can ensure the accuracy of the measurement configuration parameters when the cell is changed, so that the measurement can be correctly performed after the cell change.
  • the basic idea of the present invention is that, in the case of a cell change, the UE updates the neighbor configuration information stored by itself based on the signal from the base station.
  • cell change mainly refers to cell addition and/or deletion.
  • the primary cell change involves both the deletion and addition of the primary cell.
  • Step 103 After receiving the change notification signaling, the UE updates the neighbor configuration information stored by the UE according to the system message of the cell.
  • the UE after receiving the signaling of the deleted cell, the UE actively obtains the configuration information of the neighboring cell at the frequency of the deleted cell from the system message of the current primary cell, and is used to cover the storage of the neighboring cell. And deleting the neighboring area configuration information in the measurement object corresponding to the frequency point of the cell; or the neighboring area configuration information on the frequency point where the user equipment deletes the cell by default.
  • the UE actively obtains the neighboring area configuration information of the frequency of the added cell from the system message of the added cell, where The neighboring area configuration information in the measurement object corresponding to the frequency point of the added cell that is stored by the user is saved; or the neighboring area configuration information on the frequency point where the user adds the cell is kept unchanged.
  • the UE actively obtains the frequency of the primary cell before and after the change from the system message of the changed primary cell (ie, the current primary cell).
  • the neighboring area configuration information on the point is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the pre-change and the changed primary cell, and the system message of the active primary cell is actively taken from the changed
  • the neighboring area configuration information at the frequency point of the changed unconfigured cell is obtained, and is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the changed unconfigured cell stored by the self.
  • the UE performs neighbor configuration information update according to the change notification signaling from the base station.
  • FIG. 2 is a schematic flowchart of another method for updating neighboring area configuration information according to an embodiment of the present invention. As shown in FIG. 2, the method includes:
  • Step 201 A cell change occurs.
  • Step 202 The base station sends a change notification signaling to the UE, where the change notification signaling carries at least a cell change situation (such as deleting the cell 1), and changing neighboring area configuration information at a frequency point where the cell is located. If the cell is changed to be the primary cell, the change notification signaling further carries the neighboring cell configuration information on the frequency point of the cell before and after the change, and the frequency of the changed unconfigured serving cell, in addition to carrying the cell change status. Neighborhood configuration information on.
  • a cell change situation such as deleting the cell 1
  • the change notification signaling further carries the neighboring cell configuration information on the frequency point of the cell before and after the change, and the frequency of the changed unconfigured serving cell, in addition to carrying the cell change status. Neighborhood configuration information on.
  • Step 203 After receiving the change notification signaling, the UE updates the neighbor configuration information stored by itself according to the change notification signaling.
  • the UE When the added/deleted cell is the secondary cell, the UE obtains the neighboring area configuration information at the frequency of the added/deleted cell from the change notification signaling, and is used to cover the frequency point corresponding to the added/deleted cell stored by the UE. Neighbor configuration information in the measurement object;
  • the UE acquires the pre-change and the change notification signaling.
  • the neighboring area configuration information at the frequency point of the changed primary cell is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the primary cell after the change and the changed primary cell, and the notification from the change
  • the neighboring area configuration information at the frequency point of the changed unconfigured cell is obtained in the signaling, and is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the changed unconfigured cell stored by the self.
  • the UE performs neighboring configuration information update according to the change notification signaling and the RRC signaling from the base station.
  • Step 301 A cell change occurs.
  • Step 302 The base station sends a change notification signaling to the UE, where the change notification signaling carries a cell change situation (such as deleting the cell 1).
  • Step 303 The base station sends RRC signaling to the UE, where the RRC signaling carries at least the neighboring area configuration information on the frequency point of the changed cell indicated by the change notification signaling. If the cell is changed to be the primary cell, the neighboring cell configuration information on the frequency of the unconfigured serving cell after the change is carried, in addition to the neighboring cell configuration information at the frequency of the cell before and after the change.
  • Step 304 The UE updates the neighbor configuration information stored by the UE according to the change notification signaling and the RRC signaling.
  • the present invention also provides a neighboring area configuration information updating system, where the system includes: a base station and a UE;
  • the base station is configured to send a signaling to notify the UE when a cell change occurs;
  • the UE is configured to update the neighbor configuration information stored by the base station according to the signaling from the base station.
  • the UE updates the neighbor configuration information stored by itself according to the signaling from the base station to: When a cell change occurs, the base station sends a change notification signaling to the UE, where the change notification signaling carries at least a cell change situation;
  • the UE After receiving the change notification signaling, the UE updates the neighbor configuration information stored by itself according to the cell system message.
  • the UE updates the neighboring cell configuration information stored by the UE according to the signaling from the base station to: when the secondary cell is changed, the base station sends the change notification signaling to the UE, where the change notification signaling carries at least the cell change situation and changes the cell.
  • the UE updates the neighbor configuration information stored by itself according to the change notification signaling.
  • the UE updates the neighboring cell configuration information stored by the UE according to the signaling from the base station to: when the added/deleted cell is the secondary cell, the UE obtains the frequency of the added/deleted cell from the signaling from the base station.
  • the neighboring area configuration information is used to cover the neighboring area configuration information in the measurement object corresponding to the frequency point of the added/deleted cell stored by the self.
  • Example 1 The implementation of the technical solution of the present invention will be further described in detail below with reference to specific embodiments. It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
  • Example 1
  • the base station configures measurement tasks for UE1, and its measurement tasks include: Measurement identifier 1, the measurement object corresponding to the measurement object (the frequency fl where the cell is located) and the measurement event A3 (ie, the measurement report structure ReportingConfiguration), the measurement event A3 is the signal quality of the neighboring cell is higher than the signal quality of the primary cell by a predetermined offset the amount.
  • the configuration of the measurement object further includes a neighbor cell list on the frequency fl, and neighbor cell configuration information on the frequency point (neighCellConfig is set to 00);
  • the measurement identifier 3 the measurement object corresponding to the measurement object (the frequency f3 where Cell3 is located) and the measurement event A6 (ie, the measurement report structure ReportingConfiguration), the measurement event A6 is the signal quality of the neighboring cell than the co-frequency service cell (here, Cell3) The signal quality is high with a predetermined offset.
  • the configuration of the measurement object further includes a neighbor cell list on the frequency f3, and the neighbor configuration information at the frequency point (neighCellConfig is set to 00);
  • the measurement identifier 4 the measurement object corresponding to the measurement object (the frequency f4 where the cell4 is located) and the measurement event A3 (ie, the measurement report structure ReportingConfiguration), the measurement event A3 is the signal quality of the neighboring cell than the signal of the primary cell (here, Celll) The quality is high with a predetermined offset.
  • the configuration of the measurement object also includes a list of neighboring cells at frequency f4 and neighboring cell configuration information at the frequency point (neighCellConfig is set to 00).
  • Base station 1 also configures other measurement tasks for UE1. After a period of time, the base station 1 receives the measurement report that the Cell3 signal quality reported by the UE1 is lower than the predetermined threshold, and the base station 1 determines to delete the Cell3 for the UE1, and the base station 1 sends the RRC connection reconfiguration signaling to the UE1, which includes the information for deleting the Cell3. Carry the frequency of deleting Cell3 or the cell ID of Cell3 or the index of Cell3).
  • UE1 After receiving the signaling of deleting Cell3, UE1 releases all related resources of Cell3. At this time, UE1 The cells working at the same time are Celll and Cell2, and Celll is still the primary serving cell. Since the base station 1 deletes the Cell3, the reference object of the neighboring area configuration information included in the measurement object corresponding to the measurement identifier 3 is changed, and the original reference object is Cell3, that is, the MBSFN subframe configuration of the adjacent cell on the ⁇ and the Cell3 The MBSFN subframe configuration comparison obtains the information that the neighCellConfig is 00. At this time, after the base station 1 deletes the Cell3, the configuration information of the neighboring area on the ⁇ must be set with reference to the primary cell.
  • the system message of the Celll includes the neighboring cell configuration (10) on the f3, and the UE1 obtains the neighboring cell configuration information on the f3 in the system message (the system message of each cell)
  • the neighboring area configuration information on each frequency is referenced by the cell, and the UE1 obtains the neighboring area configuration information on the f3 in the system message is also referenced by Celll), and actively modifies the neighboring area configuration information on the measurement object ⁇ (from 00) Change to 10);
  • UE1 also modifies the measurement event in measurement identifier 3, and changes ⁇ 6 to A3, that is, the neighboring cell on ⁇ needs to be compared with the primary serving cell (Cell).
  • the base station 1 After a period of time, the base station 1 receives the measurement report that the Cell4 signal quality reported by the UE1 is higher than the predetermined offset of the primary serving cell, and the base station 1 determines to add the Cell4 to the UE1, and the base station 1 sends the RRC connection reconfiguration signaling to the UE1, including adding the Cell4.
  • Information can carry the frequency of adding Cell4 or the cell ID of Cell4 or the index of Cell4
  • the system message of Cell4 can carry MIB, SIB1, SIB2, SIB3, SIB4, SIB5, etc.
  • the base station 1 is a base station having carrier aggregation capability.
  • Base station 1 governs five cells, Celll, Cell2, Cell3, Cell4, and Cell5. Some or all of these five cells may provide carrier aggregation capabilities to the user equipment to extend the bandwidth of the transmission.
  • the user equipment UE1 accesses the network through the base station 1, and the base station 1 allocates three simultaneously working cells (Celll, Cell2, and Cell3) according to the capability of the UE1, where Celll is the primary cell (Pcell) of the UE1, UE1 Only system messages and paging messages of the primary cell are received.
  • the base station configures a measurement task for the UE1, and the measurement tasks include: a measurement identifier 1, a measurement object corresponding to the measurement identifier (the frequency f3 where the cell 3 is located), and a measurement event A4 (ie, the measurement report structure ReportingConfiguration)
  • the measurement event A4 is that the signal quality of the neighboring area is higher than a predetermined threshold.
  • the measurement identifier 3 the measurement identifier corresponding to the measurement object (the frequency f5 where the cell 5 is located) and the measurement event A3 (ie, the measurement report structure ReportingConfiguration).
  • the measurement object the frequency f5 where the cell 5 is located
  • the measurement event A3 ie, the measurement report structure ReportingConfiguration
  • It also contains a list of neighboring cells on frequency f5 and neighboring zone configuration information on that frequency (neighCellConfig is set to 10).
  • Base station 1 also configures other measurement tasks for UE1. After a period of time, the base station 1 receives a measurement report that the Cell4 signal quality reported by the UE1 is higher than the signal quality of the primary cell by a predetermined offset, and the base station 1 decides to add Cell4 to the UE1, and the base station 1 considers that the signal quality of the Cell4 is better.
  • the base station 1 determines that the UE1 changes the PCell, and the PCell of the UE is changed from Celll to Cell4.
  • the base station 1 transmits the RRC connection reconfiguration signaling to the UE1 (this may be a handover procedure, that is, the mobility control information is carried in the RRC connection reconfiguration signaling).
  • mobilityControlInfo( ) which contains the addition of Cell4 and changes the contents of the primary cell at the same time.
  • the original reference object of the neighboring cell configuration information of the neighboring cell on the frequency f5 included is Celll, and the neighboring zone configuration information on the f5 needs to be the new master.
  • the cell Cell4 is a reference. Because the UE1 needs to receive the system message of the primary cell Cell4, the system message of the Cell4 includes the neighboring cell configuration (00) on the f5, and the UE1 obtains the neighboring zone configuration information on the f5 in the system message, and then actively tampers the tampering. The neighbor configuration information (changed from 10 to 00) on the object f5 is measured.
  • the original reference object of the neighboring cell configuration information of the neighboring cell on the frequency fl is Cell.
  • the neighboring cell configuration information needs to be referenced by the new primary cell Cell4.
  • the UE1 needs to receive the system message of the primary cell Cell4, and the system message of the Cell4 includes the neighboring cell configuration (00) on the fl.
  • the UE1 actively modifies the measurement object fl. Neighbor configuration information (from 10 to 00).
  • the UE1 uses the automatic configuration method to effectively reduce the signaling overhead of the air interface, and prevents the base station 1 from configuring the neighboring area configuration information at the frequency of the new primary cell when changing the primary cell.
  • the neighbor configuration information is for the MBSFN subframe distribution
  • the neighbor configuration information is for the uplink and downlink time slot distribution.
  • Measurement ID 1 the measurement object corresponding to the measurement object (the frequency f3 where Cell3 is located) and Measurement event A4 (ie, measurement reporting construction ReportingConfiguration), measurement event A4 is the signal quality of the neighboring area is higher than the predetermined threshold.
  • the configuration of the measurement object further includes a neighbor cell list on the frequency f3, and neighbor cell configuration information on the frequency point (neighCellConfig is set to 00);
  • Measurement ID 3 corresponds to the measurement object (the frequency f4 where Cell4 is located) and the measurement event A3 (ie, the measurement report structure ReportingConfiguration).
  • the configuration of the measurement object also includes a list of neighbor cells on frequency f4 and neighbor cell configuration information (neighCellConfig is set to 00).
  • Base station 1 also configures other measurement tasks for UE1. After a period of time, the base station 1 receives the measurement report that the Cell3 signal quality reported by the UE1 is lower than the predetermined threshold, and the base station 1 sends the RRC connection reconfiguration signaling that deletes the Cell3 to the UE1, where the reconfiguration signaling does not include the measurement object ⁇ . information.
  • UE1 After receiving the reconfiguration signaling of Cell3, UE1 releases the related resources of Cell3. If the information about the measurement object f3 is not included in the reconfiguration signaling, the configuration information of the neighboring area on the default measurement object f3 of the UE1 remains unchanged, that is, the configuration information of the neighboring cell at the frequency of the deleted cell does not need to be modified. Although the reference object of the neighbor configuration information on f3 changes after changing Cell3 (from Cell3 to celll), the comparison result finally presented by the region configuration information is the same, so this embodiment uses the default configuration. In this manner, UE1 maintains the original neighbor configuration information, and does not need to obtain the neighbor configuration information on ⁇ in the system message.
  • the base station 1 After a period of time, the base station 1 receives the measurement report that the Cell4 signal quality reported by the UE1 is higher than the predetermined offset of the primary serving cell, and the base station 1 sends the RRC connection reconfiguration signaling of the Cell4 to the UE1, and the neighbor configuration information on the f4 occurs. change.
  • the base station 1 may add the neighboring area configuration information on the changed f4 in the RRC connection reconfiguration signaling of the Cell 4, or may increase the Cell4.
  • the neighboring area configuration information on the changed f4 is added to the RRC connection reconfiguration immediately after the reconfiguration signaling (the two signalings are respectively sent to reduce the number of bits of a single signaling, and improve the signaling transmission. Success rate).
  • UE1 modifies the corresponding configuration parameters in the measurement object, and then UE1 can perform the measurement correctly.

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Abstract

本发明公开了一种邻区配置信息更新方法,包括:发生小区变更的情况下,UE根据来自基站的信令对自身存储的邻区配置信息进行更新。本发明还相应地公开了一种区配置信息更新系统。本发明邻区配置信息更新方法及系统,在发生小区变更的情况下,UE根据来自基站的信令对自身存储的邻区配置信息进行更新。通过本发明,UE能够确保小区变更时测量配置参数的准确性,从而能够在小区变更后正确执行测量。

Description

一种邻区配置信息更新方法及系统 技术领域
本发明涉及无线通信技术, 尤其涉及一种邻区配置信息更新方法及系 统。 背景技术
在移动通信系统中, 用户设备(User Equipment, UE )可以在各小区之 间移动, 为了保证业务连续性, 确保业务质量, 在用户建立业务后, UE需 要根据服务基站的配置进行测量, 并向服务基站报告满足服务基站配置要 求的测量报告,从而使服务基站可以根据 UE上报的测量报告以及其他无线 资源管理(Radio Resource Management, RRM )算法进行合理的无线资源 管理。
处于连接态的 UE接收的测量配置中, 包含一个或多个测量任务, 即测 量标识 ( Measurement Identity ) , 每个测量标识包含一个测量对象 ( Measurement Object )以及相应的上才艮配置( Reporting Configuration )。 LTE 系统中, 一个测量对象就是一个载频, 测量对象的配置中包含频率信息、 该频率上相邻小区的列表、 以及邻区配置信息 ( NeighCellConfig )。 在系统 消息中也包含了各频率上相邻小区的列表、 以及邻区配置信息 ( NeighCellConfig ),其中,系统消息块 3 ( System Information Block3 , SIB3 ) 中包含的是与广播该系统消息的小区相同频率的系统内邻区信息以及邻区 配置信息 ( NeighCellConfig ) , 以广播该系统消息的小区为参考设置 NeighCellConfig; SIB5 包含的是与广播该系统消息的小区不同频率的系统 内邻区信息以及邻区配置信息 (NeighCellConfig ), 以广播该系统消息的小 区为参考设置 NeighCellConfig。 邻区配置信息的定义为: 在 FDD中, NeighCellConfig表示相邻小区的 多媒体广播多播业务单频网 ( MBMS Single Frequency Network, MBSFN ) 子帧分布与服务小区的 MBSFN子帧分布的相似度, 现有协议中, 定义 00 表示不是所有相邻小区的 MBSFN子帧分布与服务小区的 MBSFN子帧分布 相同; 01表示所有的邻区均不存在 MBSFN子帧配置; 10表示所有邻区的 MBSFN 子帧分布与服务小区的 MBSFN子帧分布相同, 或者所有邻区的 MBSFN 子帧分布是月良务小区的 MBSFN 子帧分布的子集 (The MBSFN subframe allocations of all neighbour cells are identical to or subsets of that in the serving cell )。
在 TDD中, NeighCellConfig表示相邻小区的上下行时隙分布与服务小 区的上下行时隙分布的相似度, 现有协议中定义 00、 01和 10均表示所有 相邻小区的上下行时隙分布与服务小区的上下行时隙分布相同; 11表示相 邻小区的上下行时隙分布与服务小区的上下行时隙分布不同。 在测量对象 中配置邻区配置信息是为了指导 UE的测量,防止 UE因为测量发送 MBSFN 的子帧 (该子帧中部分符号 Symbols用于发送 MBMS业务)、 或测量上行 时隙导致错误的测量结果。 UE获得邻区配置信息后, 可以确定需要测量的 子帧,对于 MBSFN子帧, UE可以测量不发送 MBMS业务的符号( Symbols )。
在引入载波聚合 ( Carrier Aggregation )后, UE能够同时工作于多个分 量载波( Component Carrier )或多个小区, 基站能够利用这多个分量载波或 多个小区同时为 UE提供更大带宽的服务。 UE工作的多个小区中, 有一个 小区为 UE提供 NAS层信息, 如 PLMN、 全局小区标识 CGI ( Cell Global Identifier ), 位置区标识信息 TAC ( Tracking Area Code )等, 该小区还为 UE提供安全算法的输入参数, UE只接收该小区的系统消息和寻呼消息, 该小区称为主小区 (Primary Cell, PCell )或主服务小区。 UE工作的其他 小区称为辅小区( Secondary Cell, SCell )或辅服务小区, 这些辅小区为 UE 提供资源。 在没有引入载波聚合之前, UE只能工作于一个小区, 此时所有频点上 的相邻小区的邻区配置信息均以 UE工作的小区(唯一的服务小区)为参考。 当 UE工作于多个小区时, 这些小区所在频点的相邻小区的邻区配置信息 ( NeighCellConfig )均以同频的服务小区( PCell或 SCell )为参考, 其他频 率上(指非 UE工作小区所在的频率) 的相邻小区的 NeighCellConfig均以 PCell为参考。
在弓 I入载波聚合后, 由于 UE工作的小区 (PCell ,或 PCell和 SCell ( s ) ) 经常会发生变更(增加或删除小区), 发生变更的小区所在频点上相邻小区 的 NeighCellConfig所参考的服务小区就会发生变化。 但是, 此时如何处理 测量配置中的 NeighCellConfig, 现有协议并没有给出解决方案。 发明内容
有鉴于此, 本发明的主要目的在于提供一种邻区配置信息更新方法及 系统, UE能够在小区变更时对邻区配置信息进行更新, 从而能够在小区变 更后正确执行测量。
为达到上述目的, 本发明的技术方案是这样实现的:
一种邻区配置信息更新方法, 包括: 发生小区变更的情况下, UE根据 来自基站的信令对自身存储的邻区配置信息进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
UE收到所述变更通知信令后,根据小区系统消息对自身存储的邻区配 置信息进行更新。
所述 UE根据小区系统消息对自身存储的邻区配置信息进行更新为: 删除的小区为辅小区、 或增加 /删除的小区为主小区时, 所述 UE才艮据 当前主小区的系统消息对自身存储的邻区配置信息进行更新; 增加的小区为辅小区时,所述 UE才艮据所述增加小区的系统消息对自身 存储的邻区配置信息进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生辅小区变更时,基站向 UE发送变更通知信令, 所述变更通知信令 至少携带小区变更情况、 变更小区所在频点上的邻区配置信息; 发生主小 区变更时,基站向 UE发送变更通知信令,所述变更通知信令至少携带小区 变更情况、 变更前和变更后小区所在频点上的邻区配置信息、 以及改变后 的未配置 Λ良务小区的频点上的邻区配置信息;
UE根据所述变更通知信令对自身存储的邻区配置信息进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
基站向 UE发送 RRC信令, 变更小区为辅小区时,所述 RRC信令至少 携带所述变更通知信令所指示的变更小区所在频点上的邻区配置信息; 变 更小区为主小区, 则所述 RRC信令至少携带变更前和变更后小区所在频点 上的邻区配置信息, 以及改变后的未配置服务小区的频点上的邻区配置信 息;
UE根据所述变更通知信令和 RRC信令, 对自身存储的邻区配置信息 进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 增加 /删除的小区为辅小区时, UE从所述来自基站的信令中获取增加 / 删除小区所在频点上的邻区配置信息, 用于覆盖自身存储的所述增加 /删除 小区所在频点对应的测量对象中的邻区配置信息;
增加 /删除的小区为主小区时, UE从所述来自基站的信令中获取改变前 和改变后的主小区所在频点上的邻区配置信息, 用于相应地覆盖自身存储 的改变前和改变后的主小区所在频点对应的测量对象中的邻区配置信息, 并且, UE从所述来自基站的信令中获取改变后的未配置小区所在频点上的 邻区配置信息, 用于覆盖自身存储的改变后的未配置小区所在频点对应的 测量对象中的邻区配置信息。
一种邻区配置信息更新系统, 包括: 基站和 UE; 其中,
所述基站, 用于在发生小区变更时, 发送信令通知 UE;
所述 UE, 用于根据来自基站的信令对自身存储的邻区配置信息进行更 新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
UE收到所述变更通知信令后,根据小区系统消息对自身存储的邻区配 置信息进行更新。
所述 UE根据小区系统消息对自身存储的邻区配置信息进行更新为: 删除的小区为辅小区、 或增加 /删除的小区为主小区时, 所述 UE才艮据 当前主小区的系统消息对自身存储的邻区配置信息进行更新;
增加的小区为辅小区时,所述 UE根据增加小区的系统消息对自身存储 的邻区配置信息进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生辅小区变更时,基站向 UE发送变更通知信令, 所述变更通知信令 至少携带小区变更情况、 变更小区所在频点上的邻区配置信息; 发生主小 区变更时,基站向 UE发送变更通知信令,所述变更通知信令至少携带小区 变更情况、 变更前和变更后小区所在频点上的邻区配置信息、 以及改变后 的未配置 Λ良务小区的频点上的邻区配置信息;
UE根据所述变更通知信令对自身存储的邻区配置信息进行更新。 所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
基站向 UE发送 RRC信令, 变更小区为辅小区时,所述 RRC信令至少 携带所述变更通知信令所指示的变更小区所在频点上的邻区配置信息; 变 更小区为主小区, 则所述 RRC信令至少携带变更前和变更后小区所在频点 上的邻区配置信息、 以及改变后的未配置服务小区的频点上的邻区配置信 息;
UE根据所述变更通知信令和 RRC信令, 对自身存储的邻区配置信息 进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 增加 /删除的小区为辅小区时, UE从所述来自基站的信令中获取增加 / 删除小区所在频点上的邻区配置信息, 用于覆盖自身存储的所述增加 /删除 小区所在频点对应的测量对象中的邻区配置信息;
增加 /删除的小区为主小区时, UE从所述来自基站的信令中获取改变前 和改变后的主小区所在频点上的邻区配置信息, 用于覆盖自身存储的改变 前和改变后的主小区所在频点对应的测量对象中的邻区配置信息, 并且, UE从所述来自基站的信令中获取改变后的未配置小区所在频点上的邻区 配置信息, 用于覆盖自身存储的改变后的未配置小区所在频点对应的测量 对象中的邻区配置信息。
本发明邻区配置信息更新方法及系统, 发生小区变更的情况下, UE根 据来自基站的信令对自身存储的邻区配置信息进行更新。 通过本发明, UE 能够确保小区变更时测量配置参数的准确性, 从而能够在小区变更后正确 执行测量。 附图说明
图 1为本发明实施例一种邻区配置信息更新方法流程示意图; 图 2为本发明实施例另一种邻区配置信息更新方法流程示意图; 图 3为本发明实施例再一种邻区配置信息更新方法流程示意图。 具体实施方式
本发明的基本思想是: 发生小区变更的情况下, UE根据来自基站的信 令对自身存储的邻区配置信息进行更新。
本发明邻区配置信息更新方法主要有以下几种具体实现方式:
1 ) UE收到来自基站的变更通知信令后, 根据小区系统消息进行邻区 配置信息更新。
图 1 为本发明实施例一种邻区配置信息更新方法流程示意图, 如图 1 所示, 该方法包括:
步骤 101 : 发生小区变更。
步骤 102: 基站向 UE发送变更通知信令, 所述变更通知信令至少携带 小区变更情况(如删除小区 1 )。
本发明中, 小区变更主要指小区增加和 /或删除。 一般的, 主小区变更 同时涉及到主小区的删除和增加。
步骤 103: UE收到所述变更通知信令后, 根据小区的系统消息对自身 存储的邻区配置信息进行更新。
具体的, 如果删除的小区为辅小区, 则 UE收到删除小区的信令后, 主 动从当前主小区的系统消息中获取删除小区所在频点上的邻区配置信息, 用于覆盖自身存储的所述删除小区所在频点对应的测量对象中的邻区配置 信息; 或者用户设备默认删除小区所在频点上的邻区配置信息保持不变。
如果增加的小区为辅小区, UE收到增加小区的信令后, 主动从所述增 加小区的系统消息中获取所述增加小区所在频点上的邻区配置信息, 用于 覆盖自身存储的所述增加小区所在频点对应的测量对象中的邻区配置信 息; 或者用户设备默认所述增加小区所在频点上的邻区配置信息保持不变。
如果增加或删除的小区为主小区, UE在收到主小区改变的信令后, 主 动从改变后的主小区 (即当前主小区) 的系统消息中获取改变前和改变后 的主小区所在频点上的邻区配置信息, 用于相应地覆盖自身存储的改变前 和改变后的主小区所在频点对应的测量对象中的邻区配置信息, 并且, 主 动从改变后的主小区的系统消息中获取改变后的未配置小区所在频点上的 邻区配置信息, 用于覆盖自身存储的改变后的未配置小区所在频点对应的 测量对象中的邻区配置信息。
2 ) UE根据来自基站的变更通知信令进行邻区配置信息更新。
图 2为本发明实施例另一种邻区配置信息更新方法流程示意图,如图 2 所示, 该方法包括:
步骤 201 : 发生小区变更。
步骤 202: 基站向 UE发送变更通知信令, 所述变更通知信令至少携带 小区变更情况(如删除小区 1 )、 变更小区所在频点上的邻区配置信息。 如 果变更小区为主小区, 则所述变更通知信令除了携带小区变更情况, 还进 一步携带变更前和变更后小区所在频点上的邻区配置信息、 以及变更后的 未配置服务小区的频点上的邻区配置信息。
步骤 203: UE收到所述变更通知信令后, 根据所述变更通知信令对自 身存储的邻区配置信息进行更新。
具体更新方法与实施例 1类似, 即:
增加 /删除的小区为辅小区时, UE从所述变更通知信令中获取增加 /删 除小区所在频点上的邻区配置信息, 用于覆盖自身存储的所述增加 /删除小 区所在频点对应的测量对象中的邻区配置信息;
增加 /删除的小区为主小区时, UE从所述变更通知信令中获取改变前和 改变后的主小区所在频点上的邻区配置信息, 用于覆盖自身存储的改变前 和改变后的主小区所在频点对应的测量对象中的邻区配置信息, 并且, 从 所述变更通知信令中获取改变后的未配置小区所在频点上的邻区配置信 息, 用于覆盖自身存储的改变后的未配置小区所在频点对应的测量对象中 的邻区配置信息。
3 ) UE根据来自基站的变更通知信令和 RRC信令进行邻区配置信息更 新。
图 3为本发明实施例再一种邻区配置信息更新方法流程示意图,如图 3 所示, 该方法包括:
步骤 301 : 发生小区变更。
步骤 302: 基站向 UE发送变更通知信令, 所述变更通知信令携带小区 变更情况(如删除小区 1 )。
步骤 303: 基站向 UE发送 RRC信令, 所述 RRC信令至少携带变更通 知信令所指示的变更小区所在频点上的邻区配置信息。 如果变更小区为主 小区, 则除了携带变更前和变更后小区所在频点上的邻区配置信息, 还需 要携带变更后的未配置服务小区的频点上的邻区配置信息。
步骤 304: UE根据所述变更通知信令和 RRC信令,对自身存储的邻区 配置信息进行更新。
具体更新方法与实施例 2类似, 在此不作详细描述。
本发明还提出一种邻区配置信息更新系统, 该系统包括: 基站和 UE; 其中,
所述基站, 用于在发生小区变更时, 发送信令通知 UE;
所述 UE, 用于根据来自基站的信令对自身存储的邻区配置信息进行更 新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
UE收到所述变更通知信令后,根据小区系统消息对自身存储的邻区配 置信息进行更新。
所述 UE根据小区系统消息对自身存储的邻区配置信息进行更新为: 删除的小区为辅小区、 或增加 /删除的小区为主小区时, 所述 UE才艮据 当前主小区的系统消息对自身存储的邻区配置信息进行更新;
增加的小区为辅小区时,所述 UE根据增加小区的系统消息对自身存储 的邻区配置信息进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生辅小区变更时,基站向 UE发送变更通知信令, 所述变更通知信令 至少携带小区变更情况、 变更小区所在频点上的邻区配置信息; 发生主小 区变更时,基站向 UE发送变更通知信令,所述变更通知信令至少携带小区 变更情况、 变更前和变更后小区所在频点上的邻区配置信息、 以及改变后 的未配置 Λ良务小区的频点上的邻区配置信息;
UE根据所述变更通知信令对自身存储的邻区配置信息进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
基站向 UE发送 RRC信令, 变更小区为辅小区时,所述 RRC信令至少 携带所述变更通知信令所指示的变更小区所在频点上的邻区配置信息; 变 更小区为主小区, 则所述 RRC信令至少携带变更前和变更后小区所在频点 上的邻区配置信息、 以及改变后的未配置服务小区的频点上的邻区配置信 息;
UE根据所述变更通知信令和 RRC信令, 对自身存储的邻区配置信息 进行更新。
所述 UE根据来自基站的信令对自身存储的邻区配置信息进行更新为: 增加 /删除的小区为辅小区时, UE从所述来自基站的信令中获取增加 / 删除小区所在频点上的邻区配置信息, 用于覆盖自身存储的所述增加 /删除 小区所在频点对应的测量对象中的邻区配置信息;
增加 /删除的小区为主小区时, UE从所述来自基站的信令中获取改变前 和改变后的主小区所在频点上的邻区配置信息, 用于覆盖自身存储的改变 前和改变后的主小区所在频点对应的测量对象中的邻区配置信息, 并且, UE从所述来自基站的信令中获取改变后的未配置小区所在频点上的邻区 配置信息, 用于覆盖自身存储的改变后的未配置小区所在频点对应的测量 对象中的邻区配置信息。
下面结合具体实施例对本发明技术方案的实施作进一步的详细描述。 需要说明的是, 在不冲突的情况下, 本发明中的实施例及实施例中的特征 可以相互组合。 实施例 1
在 LTE Advance系统中, 基站 1是具有载波聚合能力的基站。 基站 1 管辖了 5个小区, 分别是 Celll、 Cell2、 Cell3、 Cell4和 Cell5。 这五个小区 中的部分或全部可以向用户设备提供载波聚合的能力以扩展传输的带宽。 用户设备 UE1通过基站 1接入了网络,基站 1根据 UE1的能力为其分配了 三个同时工作的小区 ( Celll、 Cell2和 Cell3 ) , 其中 Celll为 UE1提供 NAS 层移动性信息如 PLMN、 全局小区标识 CGI、 位置区标识 TAC等信息, 是 UE1的主小区( Primary Cell, Pcell )、 或主服务小区, UE1只接收主小区的 系统消息和寻呼消息。
为了移动性管理和载波管理, 基站为 UE1配置了测量任务, 其测量任 务包括: 测量标识 1 , 该测量标识对应的测量对象(Celll 所在的频率 fl ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration ), 测量事件 A3为邻 区的信号质量比主小区的信号质量高预定的偏移量。 在测量对象的配置中 还包含了频率 fl 上的相邻小区列表, 以及该频点上邻区配置信息 ( neighCellConfig设置为 00 );
测量标识 2, 该测量标识对应的测量对象(Cell2 所在的频率 f2 ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration ), 测量事件 A3为邻 区的信号质量比主小区的信号质量高预定的偏移量。 在测量对象的配置中 还包含了频率 f2 上的相邻小区列表, 以及该频点上邻区配置信息 ( neighCellConfig设置为 01 );
测量标识 3 , 该测量标识对应的测量对象(Cell3 所在的频率 f3 ) 以及 测量事件 A6 (即测量上报构造 ReportingConfiguration ), 测量事件 A6为邻 区的信号质量比同频服务小区(此处指 Cell3 )的信号质量高预定的偏移量。 在测量对象的配置中还包含了频率 f3上的相邻小区列表, 以及该频点上邻 区配置信息 ( neighCellConfig设置为 00 );
测量标识 4 , 该测量标识对应的测量对象( Cell4 所在的频率 f4 ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration ), 测量事件 A3为邻 区的信号质量比主小区 (此处指 Celll ) 的信号质量高预定的偏移量。 在测 量对象的配置中还包含了频率 f4上的相邻小区列表, 以及该频点上邻区配 置信息 ( neighCellConfig设置为 00 )。
基站 1还为 UE1配置其他测量任务。 一段时间后, 基站 1收到 UE1上 报的 Cell3 信号质量低于预定门限的测量报告, 基站 1 决定为 UE1 删除 Cell3 , 基站 1向 UE1发送 RRC连接重配置信令, 其中包含删除 Cell3的信 息 (可以携带删除 Cell3的频率或 Cell3的小区标识或 Cell3的索引)。
UE1收到删除 Cell3的信令后,释放了 Cell3所有相关的资源,此时 UEl 同时工作的小区为 Celll和 Cell2, Celll仍是主服务小区。 由于基站 1删除 了 Cell3 , 测量标识 3对应的测量对象中包含的邻区配置信息的参考对象发 生了改变, 原先的参考对象是 Cell3 , 即 β上的相邻小区的 MBSFN子帧配 置与 Cell3的 MBSFN子帧配置比较获得了 neighCellConfig为 00的信息。 此时基站 1删除了 Cell3后, β上邻区配置信息必须以主小区为参考进行设 置。 因为 UE1需要接收主小区 Celll的系统消息, 在 Celll的系统消息中, 包含了 f3上的邻区配置 ( 10 ), UE1获得系统消息中 f3上的邻区配置信息 后(每个小区的系统消息中各个频率上的邻区配置信息均以该小区为参考, UE1获得系统消息中 f3上的邻区配置信息也是以 Celll为参考的), 主动修 改测量对象 β上的邻区配置信息(从 00改为 10 ); UE1同时还修改了测量 标识 3中的测量事件, 将 Α6改为 A3 , 即 β上的相邻小区需要与主服务小 区 ( Celll )进行比较。
一段时间后, 基站 1收到 UE1上报的 Cell4信号质量高于主服务小区 预定偏移的测量报告, 基站 1决定为 UE1增加 Cell4, 基站 1向 UE1发送 RRC连接重配置信令, 其中包含增加 Cell4的信息 (可以携带增加 Cell4的 频率或 Cell4的小区标识或 Cell4的索引 ) , 以及 Cell4的系统消息(可以携 带 MIB, SIB1 , SIB2, SIB3 , SIB4, SIB5等等)。
UE1收到增加 Cell4的信令后, 此时 UE1 同时工作的小区为 Celll和 Cell2、 Cell4, Celll仍是主服务小区。 由于基站 1增加了 Cell4, 测量标识 4对应的测量对象中包含的邻区配置信息的参考对象发生了改变,原先的参 考对象是 Celll ,即 f4上的相邻小区的 MBSFN子帧配置与 Celll的 MBSFN 子帧配置比较获得了 neighCellConfig为 00的信息。此时基站 1增加了 Cell4 后, f4上邻区配置信息必须以 Cell4为参考进行设置。 因为 UE1通过 RRC 重配命令获知 Cell4的系统消息, 在 Cell4的系统消息中, 包含了 f4上的邻 区配置 (10 ), UE1获得系统消息中 f4上的邻区配置信息后 (每个小区的 系统消息中各个频率上的邻区配置信息均以该小区为参考, UE1 获得系统 消息中 f4上的邻区配置信息也是以 Cell4为参考的), 主动修改测量对象 f4 上的邻区配置信息 (从 00改为 10 )。
可以看出, UE1通过自动配置 ^ί'爹改了测量标识 3和测量标识 4中的测 量事件和邻区配置信息, 然后可以执行正常的测量。 UE1 釆用自动配置的 方法可以有效的减少空口的信令开销, 避免基站 1 在增加或删除参与聚合 的小区时需要同时修改测量事件和邻区配置信息的问题。 实施例 2
在 LTE Advance系统中, 基站 1是具有载波聚合能力的基站。 基站 1 管辖了 5个小区, 分别是 Celll、 Cell2、 Cell3、 Cell4和 Cell5。 这五个小区 中的部分或全部可以向用户设备提供载波聚合的能力以扩展传输的带宽。 用户设备 UE1通过基站 1接入了网络,基站 1根据 UE1的能力为其分配了 三个同时工作的小区 (Celll、 Cell2和 Cell3 ), 其中 Celll是 UE1的主小区 ( Primary Cell , Pcell ), UE1只接收主小区的系统消息和寻呼消息。 为了移 动性管理和载波管理, 基站为 UE1配置了测量任务, 其测量任务包括: 测量标识 1 , 该测量标识对应的测量对象(Cell3 所在的频率 f3 ) 以及 测量事件 A4 (即测量上报构造 ReportingConfiguration ), 测量事件 A4为邻 区的信号质量高于预定的门限。 在测量对象的配置中还包含了频率 f3上的 相邻小区列表, 以及该频点上邻区配置信息 ( neighCellConfig设置为 00 ); 测量标识 2, 该测量标识对应的测量对象(Cell4 所在的频率 f4 ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration )。在测量对象的配置 中还包含了频率 f4 上的相邻小区列表, 以及该频点上邻区配置信息 ( neighCellConfig设置为 00 )。
测量标识 3 , 该测量标识对应的测量对象(Cell5所在的频率 f5 ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration )。在测量对象的配置 中还包含了频率 f5 上的相邻小区列表, 以及该频点上邻区配置信息 ( neighCellConfig设置为 10 )。
测量标识 4, 该测量标识对应的测量对象(Celll所在的频率 fl ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration )。在测量对象的配置 中还包含了频率 fl 上的相邻小区列表, 以及该频点上邻区配置信息
( neighCellConfig设置为 10 )。
基站 1还为 UE1配置其他测量任务。 一段时间后, 基站 1收到 UE1上 报的 Cell4信号质量比主小区的信号质量高预定偏移量的测量报告, 基站 1 决定为 UE1增加 Cell4, 同时基站 1考虑到 Cell4的信号质量更好, 因此基 站 1决定让 UE1变更 PCell, UE的 PCell从 Celll变更为 Cell4, 基站 1通 过向 UE1发送 RRC连接重配置信令 (此时可以是切换过程, 即 RRC连接 重配置信令中携带移动性控制信息 mobilityControllnfo ) , 其中包含增加 Cell4、 同时变更主小区的内容。
UE1在收到 RRC连接重配置信令后, 增加了 Cell4 , 同时变更主小区。 对于测量标识 2对应的测量对象( Cell4 所在的频率 f4 ), 其包含的频率 f4 上相邻小区的邻区配置信息原先的参考对象是 Celll ,此时 f4上邻区配置信 息需要以新的主小区 Cell4为参考。 因为 UE1需要接收主小区 Cell4的系统 消息, 在 Cell4的系统消息中, 包含了 f4上的邻区配置(10 ), UE1获得系 统消息中 f4上的邻区配置信息后,主动修改测量对象 f4上的邻区配置信息 (从 00改为 10 )。对于测量标识 3对应的测量对象( Cell5 所在的频率 f5 ), 其包含的频率 f5上相邻小区的邻区配置信息原先的参考对象是 Celll ,此时 f5上邻区配置信息需要以新的主小区 Cell4为参考。 因为 UE1需要接收主 小区 Cell4的系统消息, 在 Cell4的系统消息中, 包含了 f5上的邻区配置 ( 00 ), UE1获得系统消息中 f5上的邻区配置信息后, 主动^ ί'爹改测量对象 f5上的邻区配置信息(从 10改为 00 )。对于测量标识 4对应的测量对象( Celll 所在的频率 fl ), 其包含的频率 fl上相邻小区的邻区配置信息原先的参考 对象是 Celll , 此时 fl上邻区配置信息需要以新的主小区 Cell4为参考。 因 为 UE1需要接收主小区 Cell4的系统消息, 在 Cell4的系统消息中, 包含了 fl上的邻区配置 (00 ), UE1获得系统消息中 fl上的邻区配置信息后, 主 动修改测量对象 fl上的邻区配置信息(从 10改为 00 )。 UE1釆用自动配置 的方法可以有效的减少空口的信令开销, 避免基站 1 在变更主小区时需要 配置新的主小区所在频点上的邻区配置信息。
一段时间后, UE1又向基站 1上报 Cell3的信号质量低于预定门限的测 量报告, 基站 1执行删除 Cell3的命令 (通过向 UE1发送 RRC连接重配置 信令), UE1在删除 Cell3后, 需要修改测量对象 β上的邻区配置信息, 原 先是以 Cell3为参考, 此时需要以 Cell4为参考。 UE1从主小区的系统消息 中获取了 β上的邻区配置信息, 用于更新测量对象 β上的邻区配置信息。 在更新了测量配置中的参数后, UE1可以执行正确的测量。
需要说明的是, 本实施例不仅可以应用于 FDD系统中, 还可以应用于 TDD系统。 只是在 FDD系统中, 邻区配置信息是针对 MBSFN子帧分布 , 而在 TDD系统中, 邻区配置信息是针对上下行时隙分布。 实施例 3
在 LTE Advance系统中, 基站 1是具有载波聚合能力的基站。 基站 1 管辖了 5个小区, 分别是 Celll、 Cell2、 Cell3、 Cell4和 Cell5。 这五个小区 中的部分或全部可以向用户设备提供载波聚合的能力以扩展传输的带宽。 用户设备 UE1通过基站 1接入了网络,基站 1根据 UE1的能力为其分配了 两个同时工作的小区( Celll和 Cell3 ),其中 Celll是 UE1的主小区( Primary Cell, Pcell ), UEl只接收主小区的系统消息和寻呼消息。 为了移动性管理 和载波管理, 基站为 UE1配置了测量任务, 其测量任务包括:
测量标识 1 , 该测量标识对应的测量对象(Cell3 所在的频率 f3 ) 以及 测量事件 A4 (即测量上报构造 ReportingConfiguration ), 测量事件 A4为邻 区的信号质量高于预定的门限。 在测量对象的配置中还包含了频率 f3上的 相邻小区列表, 以及该频点上邻区配置信息 (neighCellConfig设置为 00 );
测量标识 2, 该测量标识对应的测量对象(Celll 所在的频率 fl ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration )。在测量对象的配置 中还包含了频率 fl 上的相邻小区列表, 以及该频点上邻区配置信息 ( neighCellConfig设置为 00 );
测量标识 3 , 该测量标识对应的测量对象(Cell4 所在的频率 f4 ) 以及 测量事件 A3 (即测量上报构造 ReportingConfiguration )。在测量对象的配置 中还包含了频率 f4 上的相邻小区列表, 以及该频点上邻区配置信息 ( neighCellConfig设置为 00 )。
基站 1还为 UE1配置其他测量任务。 一段时间后, 基站 1收到 UE1上 报的 Cell3信号质量低于预定门限的测量报告,基站 1向 UE1发送删除 Cell3 的 RRC连接重配置信令, 在该重配置信令中没有包含测量对象 β的信息。
UE1收到删除 Cell3的重配置信令后, 释放 Cell3的相关资源。 UE1发现重 配置信令中没有包含测量对象 f3的信息, 则 UE1默认测量对象 f3上的邻 区配置信息保持不变, 即不需要修改删除小区所在频点上的邻区配置信息。 尽管在删除 Cell3后, f3上的邻区配置信息的参考对象发生了变化(从 Cell3 变为 celll ), 但是部区配置信息最终所呈现的比较结果是相同的, 因此本实 施例釆用默认配置的方式, UE1 维持原来的邻区配置信息, 不需要获取系 统消息中的 β上的邻区配置信息。
一段时间后, 基站 1收到 UE1上报的 Cell4信号质量高于主服务小区 预定偏移的测量报告, 基站 1向 UE1发送增加 Cell4的 RRC连接重配置信 令, f4上的邻区配置信息发生了改变。 基站 1可以在增加 Cell4的 RRC连 接重配置信令中增加改变后的 f4上的邻区配置信息, 也可以在增加 Cell4 的重配置信令之后的紧接着的 RRC连接重配置中增加改变后的 f4上的邻区 配置信息 (釆用两条信令分别发送是为了减少单条信令的比特数, 提高信 令传输的成功率)。 UE1 收到改变后的 f4上的邻区配置信息后, 修改测量 对象中相应的配置参数, 然后 UE1可以正确的执行测量。
需要说明的是, 本实施例还有另外的表现形式, 如果删除 Cell3时, β 上的邻区配置信息发生了改变,基站 1需要通过 RRC信令通知 UE1改变后 的 β上的邻区配置信息。 基站 1可以在删除 Cell3的 RRC连接重配置信令 中增加改变后的 f3上的邻区配置信息, 也可以在删除 Cell3的重配置信令 之后的紧接着的 RRC连接重配置中增加改变后的 β上的邻区配置信息(釆 用两条信令分别发送是为了减少单条信令的比特数, 提高信令传输的成功 率)。 UE1 收到改变后的 β上的邻区配置信息后, 修改测量对象中相应的 配置参数, 然后 UE1可以正确的执行测量。
以上所述仅为本发明的优选实施例而已, 并非用于限定本发明的保护 范围。 根据本发明的发明内容, 还可有其他多种实施例, 在不背离本发明 精神及其实质的情况下, 熟悉本领域的技术人员当可根据本发明作出各种 相应的改变和变形, 凡在本发明的精神和原则之内, 所作的任何修改、 等 同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种邻区配置信息更新方法, 其特征在于, 该方法包括: 发生小区 变更的情况下, UE根据来自基站的信令对自身存储的邻区配置信息进行更 新。
2、 根据权利要求 1所述的方法, 其特征在于, 所述 UE根据来自基站 的信令对自身存储的邻区配置信息进行更新为:
发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
UE收到所述变更通知信令后,根据小区系统消息对自身存储的邻区配 置信息进行更新。
3、 根据权利要求 2所述的方法, 其特征在于, 所述 UE根据小区系统 消息对自身存储的邻区配置信息进行更新为:
删除的小区为辅小区、 或增加 /删除的小区为主小区时, 所述 UE才艮据 当前主小区的系统消息对自身存储的邻区配置信息进行更新;
增加的小区为辅小区时,所述 UE才艮据所述增加小区的系统消息对自身 存储的邻区配置信息进行更新。
4、 根据权利要求 1所述的方法, 其特征在于, 所述 UE根据来自基站 的信令对自身存储的邻区配置信息进行更新为:
发生辅小区变更时,基站向 UE发送变更通知信令, 所述变更通知信令 至少携带小区变更情况、 变更小区所在频点上的邻区配置信息; 发生主小 区变更时,基站向 UE发送变更通知信令,所述变更通知信令至少携带小区 变更情况、 变更前和变更后小区所在频点上的邻区配置信息、 以及改变后 的未配置 Λ良务小区的频点上的邻区配置信息;
UE根据所述变更通知信令对自身存储的邻区配置信息进行更新。
5、 根据权利要求 1所述的方法, 其特征在于, 所述 UE根据来自基站 的信令对自身存储的邻区配置信息进行更新为:
发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
基站向 UE发送 RRC信令, 变更小区为辅小区时,所述 RRC信令至少 携带所述变更通知信令所指示的变更小区所在频点上的邻区配置信息; 变 更小区为主小区, 则所述 RRC信令至少携带变更前和变更后小区所在频点 上的邻区配置信息, 以及改变后的未配置服务小区的频点上的邻区配置信 息;
UE根据所述变更通知信令和 RRC信令, 对自身存储的邻区配置信息 进行更新。
6、 根据权利要求 2至 5任一项所述的方法, 其特征在于, 所述 UE根 据来自基站的信令对自身存储的邻区配置信息进行更新为:
增加 /删除的小区为辅小区时, UE从所述来自基站的信令中获取增加 / 删除小区所在频点上的邻区配置信息, 用于覆盖自身存储的所述增加 /删除 小区所在频点对应的测量对象中的邻区配置信息;
增加 /删除的小区为主小区时, UE从所述来自基站的信令中获取改变前 和改变后的主小区所在频点上的邻区配置信息, 用于相应地覆盖自身存储 的改变前和改变后的主小区所在频点对应的测量对象中的邻区配置信息, 并且, UE从所述来自基站的信令中获取改变后的未配置小区所在频点上的 邻区配置信息, 用于覆盖自身存储的改变后的未配置小区所在频点对应的 测量对象中的邻区配置信息。
7、 一种邻区配置信息更新系统, 其特征在于, 该系统包括: 基站和 UE; 其中,
所述基站, 用于在发生小区变更时, 发送信令通知 UE;
所述 UE, 用于根据来自基站的信令对自身存储的邻区配置信息进行更 新。
8、 根据权利要求 7所述的系统, 其特征在于, 所述 UE根据来自基站 的信令对自身存储的邻区配置信息进行更新为:
发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况;
UE收到所述变更通知信令后,根据小区系统消息对自身存储的邻区配 置信息进行更新。
9、 根据权利要求 8所述的系统, 其特征在于, 所述 UE根据小区系统 消息对自身存储的邻区配置信息进行更新为:
删除的小区为辅小区、 或增加 /删除的小区为主小区时, 所述 UE才艮据 当前主小区的系统消息对自身存储的邻区配置信息进行更新;
增加的小区为辅小区时,所述 UE根据增加小区的系统消息对自身存储 的邻区配置信息进行更新。
10、根据权利要求 7所述的系统, 其特征在于, 所述 UE根据来自基站 的信令对自身存储的邻区配置信息进行更新为:
发生辅小区变更时,基站向 UE发送变更通知信令, 所述变更通知信令 至少携带小区变更情况、 变更小区所在频点上的邻区配置信息; 发生主小 区变更时,基站向 UE发送变更通知信令,所述变更通知信令至少携带小区 变更情况、 变更前和变更后小区所在频点上的邻区配置信息、 以及改变后 的未配置 Λ良务小区的频点上的邻区配置信息;
UE根据所述变更通知信令对自身存储的邻区配置信息进行更新。
11、根据权利要求 7所述的系统, 其特征在于, 所述 UE根据来自基站 的信令对自身存储的邻区配置信息进行更新为:
发生小区变更时,基站向 UE发送变更通知信令,所述变更通知信令至 少携带小区变更情况; 基站向 UE发送 RRC信令, 变更小区为辅小区时,所述 RRC信令至少 携带所述变更通知信令所指示的变更小区所在频点上的邻区配置信息; 变 更小区为主小区, 则所述 RRC信令至少携带变更前和变更后小区所在频点 上的邻区配置信息、 以及改变后的未配置服务小区的频点上的邻区配置信 息;
UE根据所述变更通知信令和 RRC信令, 对自身存储的邻区配置信息 进行更新。
12、 根据权利要求 8至 11任一项所述的系统, 其特征在于, 所述 UE 根据来自基站的信令对自身存储的邻区配置信息进行更新为:
增加 /删除的小区为辅小区时, UE从所述来自基站的信令中获取增加 / 删除小区所在频点上的邻区配置信息, 用于覆盖自身存储的所述增加 /删除 小区所在频点对应的测量对象中的邻区配置信息;
增加 /删除的小区为主小区时, UE从所述来自基站的信令中获取改变前 和改变后的主小区所在频点上的邻区配置信息, 用于覆盖自身存储的改变 前和改变后的主小区所在频点对应的测量对象中的邻区配置信息, 并且, UE从所述来自基站的信令中获取改变后的未配置小区所在频点上的邻区 配置信息, 用于覆盖自身存储的改变后的未配置小区所在频点对应的测量 对象中的邻区配置信息。
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