CN103037495B - A kind of method and device for determining Serving cell packet - Google Patents
A kind of method and device for determining Serving cell packet Download PDFInfo
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- CN103037495B CN103037495B CN201110293781.4A CN201110293781A CN103037495B CN 103037495 B CN103037495 B CN 103037495B CN 201110293781 A CN201110293781 A CN 201110293781A CN 103037495 B CN103037495 B CN 103037495B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/186—Processing of subscriber group data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
Abstract
The invention discloses a kind of method and device for determining Serving cell packet, including：User equipment determine treat the uplink time delay of packet service cell and existing Timing Advance (TA) group in the difference of the uplink time delay of Serving cell that selects；The difference is compared with the packet threshold for pre-setting, it is determined that the TA groups for treating packet service cell.The present invention solves the problems, such as the packet to auxiliary serving cell, enables the terminals to safeguard each packet exactly, reduces the administration overhead of redundancy, improve Consumer's Experience.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of method and device for determining Serving cell packet.
Background technology
In LTE (Long Term Evolution, Long Term Evolution) system, UE in connected state (UserEquipment,
User equipment) before data are sent to base station, need to realize the uplink synchronous and down-going synchronous with base station.When UE is to certain cell
After performing measurement, that is, the down-going synchronous with the cell are had been achieved with, otherwise, need to perform the process of similar cell searching.On
Row it is synchronous by performing random access procedure realizing, transmission Timing Advance can also be got in the random access procedure
(Time Advance, abbreviation TA), TA are mainly used in UE and determine the moment for sending data, after UE realizes uplink synchronous, in startup
Row synchronous timer (timeAlignmentTimer, referred to as TAT), if UE can receive base station transmission before TAT is overtime
To the Timing Advance of UE, then it is assumed that keep uplink synchronous between the UE and the base station；Otherwise, TAT is overtime, and UE thinks to lose
Row is synchronous, after losing uplink synchronous, if also needing to send data to base station, needs to realize again uplink synchronous.Due to LTE
Cell only one of which carrier wave in system, therefore terminal only one of which TA.
To provide higher data rate, advanced long-term evolution system (Long TermEvolution to mobile subscriber
Advance, abbreviation LTE-A) carrier aggregation technology (Carrier Aggregation, abbreviation CA) is proposed, its objective is as tool
The UE for having respective capabilities provides bigger broadband, improves the peak rate of UE.In LTE, the maximum downstream transmission bandwidth that system is supported
For 20MHz, carrier aggregation is to be aggregating the component carrier (Component Carriers, abbreviation CC) of two or more
Support more than 20MHz, the maximum transmission bandwidth less than 100MHz, initial stage configure the total of UL CC (upstream components carrier wave)
Sum of the number less than or equal to DL CC (downlink component carrier).
LTE-A UE with carrier aggregation capacity, can the simultaneously transceiving data on multiple component carriers, be below related to
UE except special instruction be all the UE with carrier aggregation capacity.In lte-a system, UE can lead to after entering connected state simultaneously
Cross multiple component carriers (such as CC1 and CC2) to be communicated with base station, base station can be by explicit configuration or according to protocol conventions
A principal component carrier wave (Primary Component Carrier, PCC), other component carriers is specified to be referred to as auxiliary point for UE
Loading gage ripple (Secondary Component Carrier, SCC).Serving cell on PCC is referred to as main serving cell
(Primary Cell, Pcell), the Serving cell on SCC are referred to as auxiliary serving cell (SecondaryCell, Scell).It is auxiliary
Serving cell is that base station is configured for UE after UE enters connected state.
Each Serving cell has the mark of a configuration, referred to as Serving cell mark, and the Serving cell mark of Pcell is solid
It is set to 0.For auxiliary serving cell, also single auxiliary serving cell mark, the auxiliary serving cell mark of auxiliary serving cell with it is right
The Serving cell mark answered is identical.
Carrier aggregation initial stage (i.e. Rel10), the number of Scell are fewer such as only 1, and scene is also restricted
If do not supported up RRH (Remote radio header, Remote Radio Unit) and repeater (repeater), therefore only deposit
In a TA, UE only needs to initiate uplink synchronous in Pcell, and Scell is upper will not to initiate.
Follow-up phase (i.e. Rel11), as the lifting of data volume, the number of Scell can increase, such as increases to 4, scene
Can also relax, such as support up RRH and repeater, a TA can not meet needs, therefore can introduce multiple TA.In order to manage
It is convenient, a TA group is included into using the Serving cell of identical TA for each UE, how to be grouped and configured by RRC.Now, comprising
The TA groups of Pcell only need to uplink synchronous are initiated on Pcell, and after synchronization, in the group, other cells are automatically into synchronous regime.
No TA groups comprising Pcell, it is necessary to initiate uplink synchronous on certain Scell, and just perform after Scell activation with
Machine access procedure, Scell just must can carry out normal upstream data transmission, equally, Scell synchronizations after the completion of uplink synchronous
Afterwards, interior other cells of the group are automatically into synchronous regime.It is at present for each auxiliary serving cell that base station is UE configurations, how right
Auxiliary serving cell is grouped, the method for not yet having correlation at present.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method and device for determining Serving cell packet, can realize
Auxiliary serving cell is grouped.
To solve above-mentioned technical problem, a kind of method of the determination Serving cell packet of the present invention, including：
User equipment determine treat the uplink time delay of packet service cell and existing Timing Advance (TA) group in the clothes that select
The difference of the uplink time delay of business cell；The difference is compared with the packet threshold for pre-setting, it is determined that described wait to be grouped
The TA groups of Serving cell.
Further, the user equipment determines the uplink time delay and existing Timing Advance (TA) for treating packet service cell
The difference of the uplink time delay of the Serving cell selected in group, including：
Treat packet service cell with the Serving cell selected in TA groups that has using identical time reference described
When, it is determined that the Serving cell selected in the value of the current time lead for treating packet service cell and the existing TA groups
Current time lead value；
The clothes that the value of the current time lead of packet service cell is selected in deducting the existing TA groups are treated described in taking
The result of the value of the current time lead of business cell, or the Serving cell selected in taking the existing TA groups it is current when
Between lead value deduct the current time lead for treating packet service cell value result, treat point as described
The difference of the uplink time delay of the Serving cell selected in uplink time delay and the existing TA groups of group Serving cell.
Further, the user equipment determines the uplink time delay and existing Timing Advance (TA) for treating packet service cell
The difference of the uplink time delay of the Serving cell selected in group, including：
Treat that packet service cell adopts different time references from the Serving cell selected in the existing TA groups described
When, it is determined that the Serving cell selected in the value of the current time lead for treating packet service cell and the existing TA groups
Current time lead value；
The Serving cell that the value of the descending time delay of packet service cell is selected in deducting the existing TA groups is treated described in taking
Descending time delay value result, as the Serving cell treated and select in packet service cell and the existing TA groups
Descending time delay difference；
The clothes that the value of the current time lead of packet service cell is selected in deducting the existing TA groups are treated described in taking
The value of the current time lead of business cell deducts the result of the descending time delay difference, treats packet service cell as described
Uplink time delay and existing TA groups in Serving cell uplink time delay difference.
Further, the user equipment determines the uplink time delay and existing Timing Advance (TA) for treating packet service cell
The difference of the uplink time delay of the Serving cell selected in group, including：
Treat that packet service cell adopts different time references from the Serving cell selected in the existing TA groups described
When, it is determined that the Serving cell selected in the value of the current time lead for treating packet service cell and the existing TA groups
Current time lead value；
The value of the descending time delay of the Serving cell selected in taking the existing TA groups treats packet service cell described in deducting
Descending time delay value result, as the Serving cell that selects in the existing TA groups and the packet service cell for the treatment of
Descending time delay difference；
The value of the current time lead of the Serving cell selected in taking the existing TA groups treats packet clothes described in deducting
The value of the current time lead of business cell deducts the result of the descending time delay difference, treats packet service cell as described
Uplink time delay and existing TA groups in Serving cell uplink time delay difference.
Further, it is determined that the TA groups for treating packet service cell, including at least one：
The user equipment the difference be less than the packet threshold when, it is determined that treating that packet service cell puts under by described
In the existing TA groups；
When the difference is more than the packet threshold, it is determined that described treat that packet service cell puts newly-built TA groups under；
When the difference is equal to the packet threshold, it is determined that treating that packet service cell puts the existing TA groups under by described
Or in newly-built TA groups.
Further, also include：
It is determined that by described after packet service cell puts under in the existing TA groups or puts under in newly-built TA groups, will be to institute
State and treat that the group result of packet service cell notifies base station.
Further, when there is multiple existing TA groups, the uplink time delay and each for treating packet service cell is determined respectively
The difference of the uplink time delay of the Serving cell selected in existing TA groups, obtains multiple differences；
The plurality of difference is compared with the packet threshold for pre-setting respectively, it is determined whether treat packet clothes by described
Business cell is put under in one of TA groups of the plurality of existing TA groups.
Further, also include：
After the TA groups after packet service cell determine, when the TA groups whne packet service cell need adjustment,
The difference of the uplink time delay of the Serving cell selected in recalculating the uplink time delay for treating packet service cell and existing TA groups
The Serving cell selected during the uplink time delay of packet service cell and existing TA groups are treated described in value or the user equipment monitors
Uplink time delay.
Further, it is described to treat that packet service cell is that base station is the newly assigned auxiliary serving cell of user equipment or the use
Auxiliary serving cell in the existing TA groups of family equipment.
Further, a kind of device for determining Serving cell packet, including：Uplink time delay difference value determining unit and packet are true
Order unit, wherein：
For determining, the uplink time delay difference value determining unit, treats that the uplink time delay of packet service cell was carried with the existing time
The difference of the uplink time delay of the Serving cell selected in front amount (TA) group；
The packet determining unit, for the difference is compared with the packet threshold for pre-setting, it is determined that described
Treat the TA groups of packet service cell.
Further, the uplink time delay difference value determining unit specifically for it is described treat packet service cell with it is described
When the Serving cell selected in having TA groups adopts identical time reference, it is determined that the current time for treating packet service cell is carried
The value of the current time lead of the Serving cell selected in the value of front amount and the existing TA groups；Packet clothes are treated described in taking
The current time lead of the Serving cell that the value of the current time lead of business cell is selected in deducting the existing TA groups
Value result, or the value of the current time lead of the Serving cell selected in taking the existing TA groups deduct it is described
Treat the result of the value of the current time lead of packet service cell, as the uplink time delay for treating packet service cell with
The difference of the uplink time delay of the Serving cell selected in existing TA groups.
Further, the uplink time delay difference value determining unit specifically for it is described treat packet service cell with it is described
When the Serving cell selected in having TA groups adopts different time references, it is determined that the current time for treating packet service cell is carried
The value of the current time lead of the Serving cell selected in the value of front amount and the existing TA groups；Packet clothes are treated described in taking
The result of the value of the descending time delay of the Serving cell that the value of the descending time delay of business cell is selected in deducting the existing TA groups,
As the descending time delay difference for treating packet service cell and the Serving cell for having and selecting in TA groups；Take described treat point
The current time of the Serving cell that the value of the current time lead of group Serving cell is selected in deducting the existing TA groups is carried
The value of front amount deducts the result of the descending time delay difference, used as the uplink time delay for treating packet service cell and existing TA
The difference of the uplink time delay of the Serving cell in group.
Further, the uplink time delay difference value determining unit specifically for it is described treat packet service cell with it is described
When the Serving cell selected in having TA groups adopts different time references, it is determined that the current time for treating packet service cell is carried
The value of the current time lead of the Serving cell selected in the value of front amount and the existing TA groups；Take the existing TA groups
The value of the descending time delay of the Serving cell of middle selection deducts the result of the value of the descending time delay for treating packet service cell,
As the Serving cell and the descending time delay difference for treating packet service cell that select in the existing TA groups；Take described existing
The value of the current time lead of the Serving cell selected in TA groups treats that the current time of packet service cell is carried described in deducting
The value of front amount deducts the result of the descending time delay difference, used as the uplink time delay for treating packet service cell and existing TA
The difference of the uplink time delay of the Serving cell in group.
Further, it is described packet determining unit specifically for the difference be less than the packet threshold when, it is determined that will
It is described to treat that packet service cell is put under in the existing TA groups；When the difference is more than the packet threshold, it is determined that described treat
Packet service cell puts newly-built TA groups under；When the difference is equal to the packet threshold, it is determined that treating that packet service is little by described
Zoning enters in the existing TA groups or newly-built TA groups.
Further, also including packet notification unit, wherein：
By described, the packet notification unit, treats that packet service cell puts institute under for determining in the packet determining unit
In stating existing TA groups or after putting under in newly-built TA groups, base station will be notified to the group result for treating packet service cell.
In sum, the present invention solves the problems, such as the packet to auxiliary serving cell, enables the terminals to safeguard each exactly
Packet, reduces the administration overhead of redundancy, improves Consumer's Experience.
Description of the drawings
Fig. 1 is the schematic diagram of the computational methods of Timing Advance of the prior art；
Fig. 2 is the flow chart of the method for the determination Serving cell packet of the present invention；
The flow chart that Fig. 3 is the configuration of the present invention and the packet of adjustment Serving cell；
The schematic diagram of example 1～2 is applied for the present invention in Fig. 4～5；
The schematic diagram of example 3 is applied for the present invention in Fig. 6～7；
Fig. 8 is the Organization Chart of the device of the determination Serving cell packet of the present invention.
Specific embodiment
The Timing Advance (TA) that UE is got from base station in random access procedure is performed is initial time lead, UE
Initial time lead is adjusted during data transmit-receive is carried out, obtains current time lead, as shown in figure 1, working as
Value N of front Timing AdvanceTA=DL delay+UL delay.TA is mainly UE and is used for determining the moment for sending data.With
As a example by LTE system, cell only one of which carrier wave, therefore using the descending time delay of this carrier wave as time reference, come true with reference to TA
Surely the moment (the T2 moment in Fig. 1) of data is sent, i.e. T1/T2/T3 is the absolute time, and base station and UE are alignment,
If UE expects that base station receives data in T3, then UE must send the data to base station at the T2 moment.From the point of view of base station
Get up, the T2 moment of UE, equivalent to the T1 moment of base station.After carrier aggregation is introduced, time reference can be by UE according to base station
Instruction or using acquiescence Rule, it is also possible to voluntarily selected and notified by UE base station, base station and terminal for specific
The selection of time reference is consistent.
In present embodiment when it is determined that whether different Serving cells is included into same TA groups, need according to each service
Value N of the current time lead of cellTAAnd the NTACorresponding time reference, also, because each TA group only manages one
Individual TA, but the corresponding time reference of TA groups is terminal and base station, it is known that the current time lead of each Serving cell takes
Value NTAOnly UE knows that base station is not aware that, therefore, whether different Serving cells are determined by UE preferentially in present embodiment
It is the most rational to be included into same TA groups.
In present embodiment user equipment determine treat the uplink time delay of packet service cell and existing TA groups in the clothes that select
The difference of the uplink time delay of business cell；The difference is compared with the packet threshold for pre-setting, it is determined that treating that packet service is little
The TA groups in area, wherein, the Serving cell selected in existing TA groups, can be select from an existing TA group, or from
Select in multiple existing TA groups.
The Serving cell that user equipment is selected in it is determined that treating the uplink time delay of packet service cell and existing TA groups it is upper
During the difference of row time delay, the Serving cell selected in packet service cell and existing TA groups is treated adopts identical time reference
When, due to descending time delay it is equal, therefore, the value for taking the current time lead for treating packet service cell is deducted in existing TA groups
The result of the value of the current time lead of the Serving cell of selection, or the Serving cell selected in taking existing TA groups work as
The value of front Timing Advance deducts the result of the value of the current time lead for treating packet service cell, treats point as described
The difference of the uplink time delay of the Serving cell selected in uplink time delay and the existing TA groups of group Serving cell.
When packet service cell adopts different time references from the Serving cell selected in the existing TA groups, take
Treat that the current time of the Serving cell that the value of the current time lead of packet service cell is selected in deducting existing TA groups is carried
The value of front amount deducts the result of descending time delay difference, used as the clothes treated in the uplink time delay of packet service cell and existing TA groups
The difference of the uplink time delay of business cell, descending time delay difference be the value of the descending time delay for treating packet service cell deduct it is described
The result of the value of the descending time delay of the Serving cell selected in having TA groups；Or,
When packet service cell adopts different time references from the Serving cell selected in the existing TA groups, take
The value of the current time lead of the Serving cell selected in existing TA groups is deducted treats that the current time of packet service cell is carried
The value of front amount deducts the result of descending time delay difference, used as in the uplink time delay for treating packet service cell and existing TA groups
Serving cell uplink time delay difference, descending time delay difference is the descending time delay of the Serving cell selected in existing TA groups
Value deducts the result of the value of the descending time delay for treating packet service cell.
It is above-mentioned to treat that packet service cell is that base station is the newly assigned auxiliary serving cell of user equipment or the existing TA of user equipment
Auxiliary serving cell in group.The packet of auxiliary serving cell can be with dynamic modification, the packet not dynamic modification of main serving cell.
By taking two Serving cells Cell1 and Cell2 as an example the below method is grouped to Serving cell by explanation UE,
Cell1 is the Serving cell of normal work, and it is that base station is increased newly for UE or the service of needs adjustment packet is little to belong to 0, Cell2 of group
Area, as shown in Fig. 2 including：
Step 201：UE with Cell1 as time reference by random access procedure on Cell1 or other obtain TA
Initial time lead on Procedure Acquisition Cell1, and the initial time on Cell1 is carried during data transmit-receive is carried out
Front amount is adjusted, and safeguards the current time lead on Cell1；
Value N of the current time lead on Cell1TA1=DL1delay+UL1delay.
Step 202：UE with Cell2 as time reference by random access procedure on Cell2 or other obtain TA
Initial time lead on Procedure Acquisition Cell2, and the initial time on Cell2 is carried during data transmit-receive is carried out
Front amount is adjusted, and safeguards the current time lead on Cell2；
Value N of the current time lead on Cell2TA2=DL2delay+UL2delay.
Step 203：UE is obtained under Cell2 by the measurement to Serving cell Cell1 and Cell2 or search synchronizing channel
The difference of descending time delay D L1delay of row time delay D L2delay and Cell1；
The difference of descending time delay D L2delay of Cell2 and descending time delay D L1delay of Cell1, i.e.,：DL2delay-
DL1delay is obtained as an entirety.
Step 204：UE according to the current time lead on the Cell1 for obtaining, the current time lead on Cell2 and
The difference of descending time delay D L2delay of Cell2 and descending time delay D L1delay of Cell1, according to UL2delay-UL1delay
=NTA2-NTA1- (DL2delay-DL1delay) is calculated the uplink time delay of the uplink time delay UL2delay and Cell1 of Cell2
The difference of UL1delay；
In above-mentioned computing formula, TA values subtract each other the order of middle Serving cell and DL delay subtract each other the order of middle Serving cell
It is consistent, i.e., above-mentioned formula can also be UL1delay-UL2delay=NTA1-NTA2-(DL1delay-DL2delay)。
Step 205：After UE obtains UL2delay-UL1delay, whether Cell2 is determined according to the packet threshold being pre-configured with
It is divided in the TA groups belonging to Cell1；
Cell2 can be put under if UL2delay-UL1delay is less than packet threshold in the TA groups belonging to Cell1；
If UL2delay-UL1delay is more than packet threshold, to the independent grouping managements of Cell2；If UL2delay-
UL1delay, then in the TA groups for putting under belonging to Cell1 by Cell2 or to the independent packets of Cell2.
The above-mentioned difference that UL1delay-UL2delay can also be adopted to calculate uplink time delay, it is possible to for this calculating
Method sets different packet thresholds, and other processes are with above-mentioned consistent.
Main serving cell Pcell is configured with for UE currently, Pcell belongs to group 0, in order to compatible with Rel10, it is believed that
Group 0 is now defaulted as, that is, does not need RRC explicitly to configure, as shown in figure 3, the process of configuration and adjustment Serving cell packet includes：
Step 301：Base station is that UE configures auxiliary serving cell Cell2, arranges Cell2 and belongs to group 2；
Step 302：Base station Cell2 is activated by MAC signalings；
Step 303：Base station indicates that UE obtains the TA on Cell2；
Step 304：UE passes through the process of random access procedure or other acquisitions TA, obtains the TA on Cell2, and obtains
With the difference of the uplink time delay of Cell1, the uplink time delay of Cell2 determines that the packet of Cell2 adjusts result, notify base station；
Step 305：The information that base station is provided according to UE, decides whether to adjust the packet of Cell2.
Step 306：If the packet of Cell2 need not be adjusted, terminate；Packet if necessary to adjust Cell2, then repair
Change the packet of Cell2.
The method being grouped to Serving cell of present embodiment is described in detail with reference to example.
Assume that base station 1 is the base station with carrier aggregation capacity in lte-a system.Four cells are administered in base station 1, point
It is not Cell1, Cell2, Cell3 and Cell4.Partly or entirely can gather to user equipment offer carrier wave in this four cells
The ability of conjunction is extending the bandwidth of transmission.User equipment (UE) 1 by the Cell1 of base station 1 accessed network (or network will
UE1 is switched to the Cell1 of base station 1), Cell1 provides NAS (Non-Access Stratum, Non-Access Stratum) layer-two mobility for UE1
Information, such as PLMN (Public Land Mobile Network, public land mobile network), global cell identity CGI, position
Area's mark information such as TAC, is the main serving cell (Pcell) of UE1, and UE1 only receives the system message of main serving cell and paging
Message.Cell1 and Cell2 are common cells, and Cell3 is RRH cells, and Cell4 is configured with repeater.Cell1、Cell2、
The Serving cell mark of Cell3 and Cell4 is 0,1,2,3 respectively.These three cells are the cells of FDD, for the cell of TDD,
Flow process is identical, and description is not repeated herein.
Using example 1：
Current Cell1 (Pcell) is given tacit consent to organize 0, the value for organizing 0 Timing Advance is NTA0, time reference is Pcell
Descending time delay, while base station notifies UE, need to join as the time using the descending time delay of Pcell during the TA for obtaining new cell
Examine, and the packet threshold when two Serving cells are using identical time reference is set to 20Ts (especially, it is also possible to set
It is set to 0), when the difference of uplink time delay is less than 20Ts, then auxiliary serving cell can be included into same group to manage, as shown in Figure 3.
Step a：Base station is that UE configures Cell2 as auxiliary serving cell, and the Serving cell mark of Cell2 is 1, by Cell2
It is included into group 1；
Step b：UE performs the process of random access procedure or other acquisitions TA with the descending time delay of Pcell as time reference
The Timing Advance of Cell2 is obtained, value is NTA1；
Step c：As using identical time delay reference, descending time delay difference is 0, it may be determined that Cell1's and Cell2 is upper
The difference of row time delay is：10Ts, less than 20Ts；
Step d：UE notifies base station according to result of calculation, Cell2 can be included into group 0, and after base station receives, determining will
Cell2 is included into group 0 and notifies terminal.
Using example 2：
It is all group 0 to give tacit consent to current Cell1 (Pcell) and Cell2 (Scell), and the Timing Advance for organizing 0 is NTA0, time ginseng
The descending time delay for Pcell is examined, while base station notifies UE, the descending time delay using Pcell during the TA for obtaining new cell, is needed
As time reference (can also be with the cell such as Cell2 that existed as reference), and when two Serving cells are using identical
Time reference when uplink time delay more than 20Ts, then need separately different groups to manage, as shown in Figure 4.
Step A：Base station is that UE configures Cell3 as auxiliary serving cell, and the Serving cell mark of Cell3 is 2, is included into group 1,
UE performs random access procedure with the descending time delay of Pcell as time reference or other obtain the time that TA processes obtain Cell3
Lead is NTA1；
Step B：As using the descending time delay reference of identical, descending time delay difference is 0, it may be determined that Cell1 and Cell3
The difference of uplink time delay be：25Ts, more than 20Ts；
Step C：UE notifies base station, the current packet mode of holding, or UE by Cell1 and Cell3 according to result of calculation
The difference of uplink time delay notify base station, can also include Cell1 and Cell3 descending time delay difference (by Cell1 and
The measurement of Cell3 or the synchronizing channel of search Cell1 and Cell3) notify that base station, base station determine Cell3's according to these differences
Packet.
Using example 3：
It is all group 0 to give tacit consent to current Cell1 (Pcell) and Cell2 (Scell), and the Timing Advance for organizing 0 is NTA0, time ginseng
Examine the descending time delay for Pcell.Cell3 (Scell) is group 1, and the Timing Advance for organizing 1 is NTA1, time reference is Cell3's
Descending time delay.Base station notifies UE simultaneously, needs using the descending time delay of new cell as the time during TA for obtaining new cell
With reference to, and when two Serving cells adopt uplink time delay during identical time reference more than 20Ts, then need separate difference
Group managing, as shown in Figure 5.
Step one：Base station is that UE configures Cell4 as auxiliary serving cell, and the Serving cell mark of Cell4 is 3, is included into group
2；
Step 2：UE performs random access procedure with Cell4 as time reference or other obtain TA processes and obtain Cell4's
Timing Advance is NTA2；
If base station does not specify time reference, terminal the time reference such as Cell4 for adopting can be notified base station.
Step 3：UE obtains DL4delay- by measurement or the synchronizing channel of search Cell1, Cell3 and Cell4
DL1delay (or DL1delay-DL4delay, similarly hereinafter), and DL4delay-DL3delay (or DL3delay-
DL4delay, similarly hereinafter), and the difference of calculating uplink time delay respectively, as a result it is：25Ts and 28Ts, more than 20Ts；
Step 4：UE notifies base station according to result of calculation, keeps current packet mode；
Step 5：UE removes the coverage of repeater in Cell4, and base station can pass through the SRS on Cell4 and find to need
The packet adjusted by Cell4, notifies UE, needs to recalculate Cell1 and Cell4, and the uplink time delay of Cell3 and Cell4,
Or UE is monitoring Cell1 and Cell4, and the uplink time delay of Cell3 and Cell4 always, it is found that at least one is less than
20Ts's, then notify network side；
Step 6：UE obtains DL4delay- by measurement or the synchronizing channel of search Cell1, Cell3 and Cell4
DL1delay, and DL4delay-DL3delay, and the difference of calculating uplink time delay is respectively：23Ts and 16Ts, it is determined that need with
0 separate management of group, but can be to be included into group 1, if UE reports the difference of the uplink time delay of two cells, need to include
Cell1 and Cell4, and the difference of the uplink time delay of Cell3 and Cell4, can also include Cell1 and Cell4, and
The descending time delay difference of Cell3 and Cell4.
Step 7：UE notifies base station according to result of calculation, Cell4 can be included into group 1, and base station determines to be included into Cell4
Group 1 simultaneously notifies UE.
Above-mentioned steps five～seven, are equally applicable to Cell2, Cell3, i.e. base station and can pass through the SRS on Cell2, Cell3
It was found that needing to adjust the packet of Cell2, Cell3, notify UE, need to recalculate Cell2 and Cell1, and Cell2 and
(whether the packet above in relation to Cell2 needs adjustment to the uplink time delay of Cell3, Cell2 and Cell4, although Cell2 and Cell1
In same packet, but if Cell2 needs adjustment, then need also exist for the difference of the uplink time delay of calculating Cell2 and Cell1
Value), recalculate Cell3 and Cell1, and the uplink time delay of Cell3 and Cell4 (whether the packet above in relation to Cell3 needs
Adjust, Cell1 and Cell2 is in same packet, it is only necessary to calculate one of them such as the uplink time delay of Cell1 and Cell3
Difference, or two cells all calculate i.e. Cell1 and the uplink time delay of Cell3 is poor, Cell2 and Cell3 it is up when
Prolong difference to calculate).Or UE is monitoring Cell1, Cell2, Cell3 always, in three cells between each two cell (i.e.
Cell1 and Cell2, Cell1 and Cell3, Cell2 and Cell3) uplink time delay, it is found that at least one (except Cell1) is low
In 20Ts, then network side is notified.
Devices of the Fig. 8 for the determination Serving cell packet of present embodiment, including：Uplink time delay difference value determining unit and point
Group determining unit, wherein：
Uplink time delay difference value determining unit, for determining the uplink time delay and existing Timing Advance for the treatment of packet service cell
(TA) difference of the uplink time delay of the Serving cell selected in group；
Packet determining unit, for difference is compared with the packet threshold for pre-setting, it is determined that treating that packet service is little
The TA groups in area.
Upper uplink time delay difference value determining unit is specifically for treating to select in packet service cell and the existing TA groups described
When the Serving cell selected adopts different time references, it is determined that the value of the current time lead for treating packet service cell
With the value of the current time lead of the Serving cell selected in the existing TA groups；Take described treating under packet service cell
The result of the value of the descending time delay of the Serving cell that the value of row time delay is selected in deducting the existing TA groups, treats as described
The descending time delay difference of the Serving cell selected in packet service cell and the existing TA groups；Packet service cell is treated described in taking
Current time lead value deduct the existing TA groups in the value of the current time lead of Serving cell that selects
The result of the descending time delay difference is deducted, as the service in the uplink time delay for treating packet service cell and existing TA groups
The difference of the uplink time delay of cell.
Or, described, uplink time delay difference value determining unit is specifically for treating that packet service cell is had in TA groups with described
When the Serving cell of selection adopts different time references, it is determined that the current time lead for treating packet service cell takes
The value of the current time lead of the Serving cell selected in value and the existing TA groups；Select in taking the existing TA groups
The value of the descending time delay of Serving cell deducts the result of the value of the descending time delay for treating packet service cell, used as described
The Serving cell selected in existing TA groups and the descending time delay difference for treating packet service cell；Select in taking the existing TA groups
The value of the current time lead of the Serving cell selected deducts taking for the current time lead for treating packet service cell
Value deducts the result of the descending time delay difference, used as the clothes in the uplink time delay for treating packet service cell and existing TA groups
The difference of the uplink time delay of business cell.
Determining unit is grouped specifically for when difference is less than packet threshold, it is determined that it is existing to treat that packet service cell puts under
In TA groups；When difference is more than packet threshold, it is determined that treating that packet service cell puts newly-built TA groups under；Packet threshold is equal in difference
When, it is determined that will treat that packet service cell is put under in existing TA groups or newly-built TA groups.
After determining after the TA groups of packet service cell, uplink time delay difference value determining unit is treating the TA of packet service cell
When group needs adjustment, the up of the Serving cell that selects in treating the uplink time delay of packet service cell and existing TA groups is recalculated
The Serving cell that the difference of time delay or monitoring are selected in uplink time delay and the existing TA groups of packet service cell it is up when
Prolong.
The device also includes packet notification unit, and packet notification unit will be waited to be grouped for determining in packet determining unit
During Serving cell puts existing TA groups under or after putting under in newly-built TA groups, the group result that will treat packet service cell notifies base
Stand.
The above, only presently preferred embodiments of the present invention is not intended to limit protection scope of the present invention, it is all
Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in the protection of the present invention
Within the scope of.
Claims (9)
1. a kind of method that determination Serving cell is grouped, it is characterised in that include：
User equipment determine treat the uplink time delay of packet service cell and existing Timing Advance (TA) group in the service that selects it is little
The difference of the uplink time delay in area；The difference is compared with the packet threshold for pre-setting, it is determined that described treat packet service
The TA groups of cell；
Wherein, the user equipment determines the uplink time delay and selection in existing Timing Advance (TA) group for treating packet service cell
Serving cell uplink time delay difference, including：
When the Serving cell selected in packet service cell with the existing TA groups adopts identical time reference, really
The Serving cell that selects in the value of the current time lead for treating packet service cell and the existing TA groups is worked as
The value of front Timing Advance；
Treat described in taking that the service that the value of the current time lead of packet service cell is selected in deducting the existing TA groups is little
The result of the value of the current time lead in area, or the current time of the Serving cell selected in taking the existing TA groups carries
The value of front amount deducts the result of the value of the current time lead for treating packet service cell, treats packet clothes as described
The difference of the uplink time delay of the Serving cell selected in uplink time delay and the existing TA groups of business cell；
Or,
Described when packet service cell adopts different time references from the Serving cell selected in the existing TA groups, really
The Serving cell that selects in the value of the current time lead for treating packet service cell and the existing TA groups is worked as
The value of front Timing Advance；
Treat described in taking under the Serving cell that the value of the descending time delay of packet service cell is selected in deducting the existing TA groups
As described, the result of the value of row time delay, treats that packet service cell is descending with the Serving cell for having and selecting in TA groups
Time delay difference；
Treat described in taking that the service that the value of the current time lead of packet service cell is selected in deducting the existing TA groups is little
The value of the current time lead in area deducts the result of the descending time delay difference, treats the upper of packet service cell as described
The difference of the uplink time delay of the Serving cell in row time delay and existing TA groups；
Or,
Described when packet service cell adopts different time references from the Serving cell selected in the existing TA groups, really
The Serving cell that selects in the value of the current time lead for treating packet service cell and the existing TA groups is worked as
The value of front Timing Advance；
The value of the descending time delay of the Serving cell selected in taking the existing TA groups deducts described treating under packet service cell
The result of the value of row time delay, treats packet service cell descending with described as the Serving cell selected in the existing TA groups
Time delay difference；
The value of the current time lead of the Serving cell selected in taking the existing TA groups treats that packet service is little described in deducting
The value of the current time lead in area deducts the result of the descending time delay difference, treats the upper of packet service cell as described
The difference of the uplink time delay of the Serving cell in row time delay and existing TA groups.
2. the method for claim 1, it is characterised in that it is determined that the TA groups for treating packet service cell, including at least
One below：
The user equipment is when the difference is less than the packet threshold, it is determined that to treat that packet service cell puts under described by described
In existing TA groups；
When the difference is more than the packet threshold, it is determined that described treat that packet service cell puts newly-built TA groups under；
When the difference is equal to the packet threshold, it is determined that treating that packet service cell puts the existing TA groups or new under by described
Build in TA groups.
3. method as claimed in claim 2, it is characterised in that also include：
It is determined that by described after packet service cell puts under in the existing TA groups or puts under in newly-built TA groups, will treat to described
The group result of packet service cell notifies base station.
4. the method for claim 1, it is characterised in that：
When there is multiple existing TA groups, the uplink time delay and selection in each existing TA group for treating packet service cell is determined respectively
Serving cell uplink time delay difference, obtain multiple differences；
The plurality of difference is compared with the packet threshold for pre-setting respectively, it is determined whether treat that packet service is little by described
Zoning enters in one of TA groups of the plurality of existing TA groups.
5. the method for claim 1, it is characterised in that also include：
After the TA groups after packet service cell determine, when the TA groups whne packet service cell need adjustment, again
The difference of the uplink time delay of the Serving cell selected during the uplink time delay of packet service cell and existing TA groups are treated described in calculating or
The Serving cell selected during the uplink time delay of packet service cell and existing TA groups are treated described in user equipment monitors described in person it is upper
Row time delay.
6. Claims 1 to 5 one of arbitrarily as described in method, it is characterised in that：
It is described to treat that packet service cell is that base station is the newly assigned auxiliary serving cell of user equipment or the existing TA of the user equipment
Auxiliary serving cell in group.
7. the device that a kind of determination Serving cell is grouped, it is characterised in that include：Uplink time delay difference value determining unit and packet are true
Order unit, wherein：
The uplink time delay difference value determining unit, for determining the uplink time delay and existing Timing Advance for the treatment of packet service cell
(TA) difference of the uplink time delay of the Serving cell selected in group；
The packet determining unit, for the difference is compared with the packet threshold for pre-setting, treats point it is determined that described
The TA groups of group Serving cell；
Wherein, described, the uplink time delay difference value determining unit is specifically for treating that packet service cell is had in TA groups with described
When the Serving cell of selection adopts identical time reference, it is determined that the current time lead for treating packet service cell takes
The value of the current time lead of the Serving cell selected in value and the existing TA groups；Packet service cell is treated described in taking
The value of the current time lead of the Serving cell that the value of current time lead is selected in deducting the existing TA groups
As a result, the value of the current time lead of the Serving cell for or selecting in taking the existing TA groups treats packet clothes described in deducting
The result of the value of the current time lead of business cell, as the uplink time delay for treating packet service cell and existing TA groups
The difference of the uplink time delay of the Serving cell of middle selection；
Or,
The uplink time delay difference value determining unit is specifically for treating to select in packet service cell and the existing TA groups described
Serving cell adopt different time references when, it is determined that the value of the current time lead for treating packet service cell and
The value of the current time lead of the Serving cell selected in the existing TA groups；The descending of packet service cell is treated described in taking
The result of the value of the descending time delay of the Serving cell that the value of time delay is selected in deducting the existing TA groups, treats point as described
Organize the descending time delay difference of Serving cell and the Serving cell for having and selecting in TA groups；Packet service cell is treated described in taking
The value of the current time lead of the Serving cell that the value of current time lead is selected in deducting the existing TA groups subtracts
The result of the descending time delay difference is gone, it is little with the service in existing TA groups as the uplink time delay for treating packet service cell
The difference of the uplink time delay in area；
Or,
The uplink time delay difference value determining unit is specifically for treating to select in packet service cell and the existing TA groups described
Serving cell adopt different time references when, it is determined that the value of the current time lead for treating packet service cell and
The value of the current time lead of the Serving cell selected in the existing TA groups；The service selected in taking the existing TA groups
The value of the descending time delay of cell deducts the result of the value of the descending time delay for treating packet service cell, used as described existing
The Serving cell selected in TA groups and the descending time delay difference for treating packet service cell；Select in taking the existing TA groups
The value of the current time lead of Serving cell deducts the value of the current time lead for treating packet service cell and subtracts
The result of the descending time delay difference is gone, it is little with the service in existing TA groups as the uplink time delay for treating packet service cell
The difference of the uplink time delay in area.
8. device as claimed in claim 7, it is characterised in that：
It is described packet determining unit specifically for the difference be less than the packet threshold when, it is determined that treating packet service by described
Cell is put under in the existing TA groups；When the difference is more than the packet threshold, it is determined that described treat the little zoning of packet service
Enter newly-built TA groups；When the difference is equal to the packet threshold, it is determined that to treat that packet service cell puts under described existing by described
In TA groups or newly-built TA groups.
9. device as claimed in claim 8, it is characterised in that also including packet notification unit, wherein：
The packet notification unit, for the packet determining unit determine by it is described treat packet service cell put under it is described
In there are TA groups or after putting under in newly-built TA groups, base station will be notified to the group result for treating packet service cell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110293781.4A CN103037495B (en) | 2011-09-30 | 2011-09-30 | A kind of method and device for determining Serving cell packet |
| PCT/CN2012/077505 WO2013044656A1 (en) | 2011-09-30 | 2012-06-26 | Method and device for determining serving cell group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110293781.4A CN103037495B (en) | 2011-09-30 | 2011-09-30 | A kind of method and device for determining Serving cell packet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103037495A CN103037495A (en) | 2013-04-10 |
| CN103037495B true CN103037495B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110293781.4A Expired - Fee Related CN103037495B (en) | 2011-09-30 | 2011-09-30 | A kind of method and device for determining Serving cell packet |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103037495B (en) |
| WO (1) | WO2013044656A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400079A (en) * | 2007-09-26 | 2009-04-01 | 大唐移动通信设备有限公司 | Detection method and device for idle port synchronization error |
| CN102123475B (en) * | 2010-01-12 | 2015-08-19 | 华为技术有限公司 | A kind of defining method of timing advance grouping and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463563C (en) * | 2005-02-26 | 2009-02-18 | 中兴通讯股份有限公司 | Cell handoff method of TD-SCDMA communication system |
| BRPI0924662B8 (en) * | 2009-04-24 | 2018-12-11 | Huawei Tech Co Ltd | uplink sync method and device |
| CN102118801B (en) * | 2011-03-31 | 2013-07-24 | 电信科学技术研究院 | Method and device for unlink transmission in multicarrier aggregation system |
-
2011
- 2011-09-30 CN CN201110293781.4A patent/CN103037495B/en not_active Expired - Fee Related
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2012
- 2012-06-26 WO PCT/CN2012/077505 patent/WO2013044656A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400079A (en) * | 2007-09-26 | 2009-04-01 | 大唐移动通信设备有限公司 | Detection method and device for idle port synchronization error |
| CN102123475B (en) * | 2010-01-12 | 2015-08-19 | 华为技术有限公司 | A kind of defining method of timing advance grouping and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103037495A (en) | 2013-04-10 |
| WO2013044656A1 (en) | 2013-04-04 |
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