WO2013044655A1 - 一种对服务小区进行分组的方法、用户设备及基站 - Google Patents

一种对服务小区进行分组的方法、用户设备及基站 Download PDF

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Publication number
WO2013044655A1
WO2013044655A1 PCT/CN2012/077503 CN2012077503W WO2013044655A1 WO 2013044655 A1 WO2013044655 A1 WO 2013044655A1 CN 2012077503 W CN2012077503 W CN 2012077503W WO 2013044655 A1 WO2013044655 A1 WO 2013044655A1
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WIPO (PCT)
Prior art keywords
serving cell
packet
group
base station
existing
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PCT/CN2012/077503
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English (en)
French (fr)
Inventor
陈中明
杜忠达
黄亚达
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中兴通讯股份有限公司
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Publication of WO2013044655A1 publication Critical patent/WO2013044655A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method, a user equipment, and a base station for grouping a serving cell. Background technique
  • the UE User Equipment
  • the UE In the LTE (Long Term Evolution) system, the UE (User Equipment) in the connected state needs to implement uplink synchronization and downlink synchronization with the base station before transmitting data to the base station.
  • the UE When the UE performs measurement on a certain cell, it has already obtained downlink synchronization with the cell; otherwise, a process similar to cell search needs to be performed.
  • Uplink synchronization is implemented by performing a random access procedure. In the random access process, a Time Advance (TA) can also be obtained.
  • the ⁇ is mainly used by the UE to determine the time at which data is sent, and the UE implements uplink synchronization.
  • the uplink synchronization timer (TAT) is started, if the UE can receive the time advance sent by the base station to the UE before the TAT expires, the UE is considered to maintain uplink synchronization with the base station; otherwise, the TAT times out. After the UE considers that the uplink synchronization is lost and the uplink synchronization is lost, if the data needs to be sent to the base station, the uplink synchronization needs to be re-implemented. Since the cell in the LTE system has only one carrier, there is only one TA in one terminal.
  • LTE-A Long Term Evolution Advance
  • CA Carrier Aggregation
  • Large broadband increasing the peak rate of the UE.
  • the maximum downlink transmission bandwidth supported by the system is 20 MHz.
  • Carrier aggregation is to aggregate two or more component carriers (CC) to support a transmission bandwidth greater than 20 MHz and a maximum of 100 MHz.
  • the initial stage is configured with UL.
  • the total number of CCs (uplink component carriers) is less than or equal to the total number of DL CCs (downlink component carriers).
  • An LTE-A UE with carrier aggregation capability can transmit and receive data on multiple component carriers at the same time.
  • the UEs involved below are UEs with carrier aggregation capability unless otherwise specified.
  • the UE after the UE enters the connected state, it can communicate with the base station through multiple component carriers (such as CC1 and CC2) at the same time, and the base station specifies a primary component carrier for the UE through explicit configuration or according to the protocol.
  • PCC Primary Component Carrier
  • SCCs Secondary Component Carriers
  • the serving cell on the PCC is called a primary cell (Pcell), and the serving cell on the SCC is called a secondary cell (Scell).
  • the secondary serving cell is configured by the base station for the UE after the UE enters the connected state.
  • the serving cell has symmetric uplink component carriers and downlink component carriers (Scell can only configure downlink) and is explicitly indicated in SIB2 (system information block 2).
  • SIB2 system information block 2
  • the concept of cross-carrier scheduling that is, when the PDCCH (Physical Downlink Control Channel Signal) interference of a certain Scell is relatively serious, the PDCCH of the Scell is not enabled, but the PDSCH of the Scell is scheduled by another serving cell.
  • the other serving cell here can be configured by RRC (Radio Resource Control) signaling.
  • the base station allocates only one C-RNTI (Cell Radio Network Temporary Identity) for one UE, that is, the C-RNTI of each serving cell is the same.
  • C-RNTI Cell Radio Network Temporary Identity
  • Each serving cell has a configured identifier, called a serving cell identifier, and the serving cell identifier of the Pcell is fixed to zero.
  • a serving cell identifier For the secondary serving cell, there is also a separate secondary serving cell identifier, and the secondary serving cell identifier of the secondary serving cell is the same as the corresponding serving cell identifier.
  • the number of Scells is as small as one, and the scenario is also limited. If the uplink radio head (RR) and repeater (repeater) are not supported, only the SRR is present. For a TA, the UE only needs to initiate uplink synchronization on the Pcell, and the Scell does not initiate.
  • RR uplink radio head
  • repeater repeater
  • the number of Scells will increase due to the increase in the amount of data. If the number of Scells is increased to four, the scenario will be relaxed. For example, if the uplink RRH and repeater are supported, a TA cannot meet the requirements, so more TA. For management convenience, the serving cell using the same TA for each UE is classified into one TA group, and how the packet is configured by RRC. At this time, the TA group that includes the Pcell only needs to initiate uplink synchronization on the Pcell. After synchronization, other cells in the group automatically enter the synchronization state.
  • a TA group that does not contain a Pcell must initiate uplink synchronization on a certain Scell, and the random access procedure is performed after the Scell is activated.
  • the Scell must perform normal uplink data transmission after the uplink synchronization is completed. Similarly, after the Scell is synchronized. , other cells in the group automatically enter the synchronization state.
  • the secondary serving cells for each secondary serving cell configured by the base station for the UE. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a method for grouping services d and areas, a user equipment, and a base station, which can implement grouping of secondary service cells.
  • a method for grouping a serving cell includes: a user equipment sends packet adjustment information to a base station, where the packet adjustment information includes an indication for determining how to divide a TA group by a serving cell to be grouped. .
  • the method for grouping a serving cell includes: the user equipment sends packet adjustment information to the base station, where the packet adjustment information includes information indicating that the to-be-packaged serving cell is allocated to an existing time advance (TA) group or The information indicating that the to-be-packaged serving cell is allocated to the newly established TA group or the information indicating that the current grouping of the to-be-packet serving cell is not required is not required.
  • TA time advance
  • the packet adjustment information further includes a cell identifier or a secondary serving cell identifier of the to-be-packet serving cell.
  • the method further includes: when the user equipment includes information indicating that the to-be-packaged serving cell is allocated to an existing TA group, where the packet information further includes the to-be-packetized service The group number of the existing TA group to which the cell is allocated, or the cell identifier of the serving cell in the existing TA group or the secondary month service cell identifier.
  • the method further includes: after receiving the packet adjustment information, the base station, when the packet adjustment information includes information indicating that the to-be-packet serving cell is allocated to an existing TA group, the base station to be grouped And the group ID included in the packet adjustment information or the existing TA group pointed to by the cell identifier of the serving cell in the existing TA group or the secondary serving cell identifier; the indication included in the packet adjustment information is to be When the packet serving cell is classified into the information of the newly created TA group, the to-packet serving cell is allocated into the newly created TA group; and when the packet adjustment information includes information indicating that the current packet of the to-be-packet serving cell is not required to be adjusted, the remaining The packet to be served cell is in the current packet.
  • the user equipment is configured when the base station configures the secondary serving cell for the user equipment, or when the secondary serving cell enters the synchronization state by the out-of-synchronization state, or when the base station notifies the secondary serving cell that the packet needs to be adjusted, or When the serving cell packet needs to be adjusted, the secondary serving cell is used as the to-packet serving cell, and the packet adjustment information is sent to the base station.
  • the foregoing method for grouping a serving cell includes: The user equipment sends packet adjustment information to the base station, where the packet adjustment information includes a difference between an uplink delay of the serving cell to be grouped and an uplink delay of the serving cell selected in the existing TA group.
  • the packet adjustment information further includes a cell identifier or a secondary serving cell identifier of the to-be-packet serving cell, and/or a cell identifier or a secondary serving cell identifier of the serving cell selected in the existing TA group.
  • the method further includes: when the base station receives the packet adjustment information, the difference between the uplink delay of the serving cell to be grouped and the uplink delay of the selected serving cell in the existing TA group, and a preset packet The threshold is compared to determine the TA group of the serving cell to be grouped.
  • the user equipment further includes: the difference of the uplink delay is the value of the uplink delay of the to-be-packet serving cell minus the uplink of the selected serving cell in the existing TA group.
  • the difference of the uplink delay is the value of the uplink delay of the to-be-packet serving cell minus the uplink of the selected serving cell in the existing TA group.
  • the base station compares the difference of the uplink delay with a corresponding packet threshold according to the notification of the user equipment, and determines a TA group of the serving cell to be grouped.
  • the base station determines that the TA group of the to-be-packet serving cell includes at least one of the following: the base station determines, when the difference is smaller than the packet threshold, that the to-packet serving cell is classified into the When the difference is greater than the packet threshold, determining that the to-be-packaged serving cell is classified into a new TA group; when the difference is equal to the packet threshold, determining that the to-be-set The packet serving cell is allocated to the existing TA group or the new TA group.
  • the method for grouping the serving cell includes: the user equipment sends the packet adjustment information to the base station, where the packet adjustment information includes a current TA of the serving cell to be grouped, a current TA of the existing TA group, and the to-be-grouped The downlink delay difference between the serving cell and the serving cell selected in the existing TA group.
  • the packet adjustment information further includes a cell identifier or a secondary serving cell identifier of the to-be-packet serving cell, and/or a cell identifier or a secondary serving cell identifier of the serving cell selected in the existing TA group.
  • the method further includes: the downlink delay difference is a value of a value of a downlink delay of the serving cell to be grouped, and a value of a downlink delay of the serving cell selected by the existing TA group;
  • the base station takes the value of the current TA of the to-be-packaged serving cell, the value of the current TA of the existing TA group, and the result of subtracting the downlink delay difference.
  • comparing the difference of the uplink delay with a preset packet threshold to determine The TA group of the packet serving cell is referred to.
  • the method further includes: the downlink delay difference is a value of a value of a downlink delay of the serving cell selected in the existing TA group, and a value of a downlink delay of the to-be-packet serving cell;
  • the base station takes the value of the current TA of the existing TA group, subtracts the value of the current TA of the to-be-packaged serving cell, and subtracts the downlink delay difference.
  • comparing the difference of the uplink delay with a preset packet threshold to determine The TA group of the packet serving cell is referred to.
  • a method for grouping serving cells including:
  • the base station instructs the user equipment to report the detection information to the base station on the serving cell to be grouped and the serving cell selected in the existing TA group;
  • the user equipment reports the detection information to the base station at the same time on the serving cell selected by the to-be-packet serving cell and the existing TA group according to the indication of the base station;
  • the base station determines a packet result of the to-packet serving cell according to a time when the detection information is received.
  • the determining, by the base station, the grouping result of the to-packet serving cell according to the time when the detecting information is received includes: the time and the receiving time that the base station receives the detection information from the to-packet serving cell The time at which the detection information is received on the serving cell selected in the existing TA group is subtracted, and the difference between the uplink delay of the serving cell to be grouped and the uplink delay of the serving cell selected in the existing TA group is obtained. And comparing the difference of the uplink delay with a preset packet threshold to determine the TA group of the serving cell to be grouped.
  • a user equipment comprising: an information determining unit and an information sending unit, wherein:
  • the information determining unit is configured to: determine packet adjustment information for the packet serving cell.
  • the information determining unit is configured to: determine a packet adjustment signal for the packet serving cell And the information about the packet to be grouped into the existing time advance (TA) group or the information indicating that the to-packet service cell is allocated to the new TA group or the indication does not need to be adjusted to be grouped.
  • the information transmitting unit is configured to: send packet adjustment information to the base station.
  • the information determining unit is further configured to: when the packet adjustment information includes information indicating that the to-be-packaged serving cell is allocated to an existing TA group, where the group information further includes the to-be-supplied The group number of the existing TA group to which the packet serving cell is allocated, or the cell identifier or the secondary serving cell identifier of the serving cell in the existing TA group.
  • the information determining unit is configured to: determine, according to the grouping serving cell, packet adjustment information, where the packet adjustment information includes an uplink delay of the serving cell to be grouped and an uplink delay of the selected serving cell in the existing TA group. Difference
  • the information transmitting unit is configured to: send packet adjustment information to the base station.
  • the information determining unit is configured to: determine packet adjustment information for the packet serving cell, where the packet adjustment information includes a current TA of the serving cell to be grouped, a current TA of the existing TA group, and the to-be-packetized serving cell and a downlink delay difference of the serving cell selected in the existing TA group;
  • the information transmitting unit is configured to: send packet adjustment information to the base station.
  • a base station based on the foregoing user equipment comprising: an information receiving unit and a packet adjusting unit, where: the packet adjusting unit is configured to: allocate the to-be-packaged serving cell into an existing TA group according to the received indication of the packet adjustment information information.
  • the information receiving unit is configured to: receive packet adjustment information;
  • the packet adjustment unit is configured to: when the packet adjustment information includes information indicating that the serving cell to be grouped into the existing TA group, the group to be grouped into the group included in the group adjustment information The number or the existing TA group pointed to by the cell identifier of the serving cell in the existing TA group or the secondary serving cell identifier; when the packet adjustment information includes information indicating that the current packet of the serving cell to be packetized is not required to be reserved, The to-packet serving cell is in the current packet.
  • the information receiving unit is configured to: receive packet adjustment information;
  • the packet adjustment unit is configured to: uplink delay of the serving cell to be grouped with the existing TA group The difference of the uplink delay of the selected serving cell is compared with a preset packet threshold to determine the TA group of the serving cell to be grouped.
  • the information receiving unit is configured to: receive packet adjustment information;
  • the packet adjustment unit is configured to: the downlink delay difference is a value of a downlink delay of the to-be-packet serving cell, and a value of a downlink delay of the serving cell selected by the existing TA group. a result of taking the value of the current TA of the to-be-packaged serving cell minus the value of the current TA of the existing TA group minus the downlink delay difference, as the to-packet serving cell. The difference between the uplink delay and the uplink delay of the serving cell in the existing TA group is compared with the preset packet threshold to determine the TA group of the serving cell to be grouped. .
  • a base station includes: a detection information triggering unit and a grouping adjustment unit, wherein:
  • the detection information triggering unit is configured to: instruct the user equipment to report the detection information to the base station on the serving cell to be grouped and the selected serving cell in the TA group;
  • the packet adjustment unit is configured to: determine a grouping result of the to-be-packet serving cell according to a time when the detection information is received.
  • a user equipment based on the foregoing base station comprising: a signaling receiving unit and a detecting information sending unit, where:
  • the signaling receiving unit is configured to: receive, by the base station, an instruction for simultaneously reporting the detection information to the base station on the serving cell selected by the to-be-packet serving cell and the existing TA group;
  • the check information sending unit is configured to: simultaneously report the detection information to the base station on the serving cell selected by the to-be-packet serving cell and the existing TA group.
  • the embodiment of the present invention solves the problem of grouping a secondary serving cell, enables the terminal to accurately maintain each group, reduces redundant management overhead, and improves user experience.
  • FIG. 1 is a flowchart of a method 1 for grouping a serving cell according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method 2 for grouping a serving cell according to an embodiment of the present invention
  • FIG. 3 to 8 are flowcharts of application examples 1 to 6 of the present invention.
  • FIG. 9 is a structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 11 is a structural diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 12 is a structural diagram of a base station according to another embodiment of the present invention. Preferred embodiment of the invention
  • the following two methods may be used to group the secondary serving cells.
  • the Cell is configured as a Pcell for the UE and belongs to the group 0. It is compatible with the RellO. It can be considered as the group 0 by default. That is, the RRC explicit configuration is not required. It is assumed that the base station configures the secondary serving cell Cell2 and the cell2 as the serving cell to be grouped. As shown in Figure 1, the method includes:
  • Step 101 The base station configures the secondary serving cell Cell2 for the UE, and sets Cell2 to belong to group 2;
  • Step 102 The base station activates Cell2 by using MAC signaling.
  • Step 103 The base station instructs the UE to acquire the TA on the Cell2, and notifies the packet adjustment information that needs to be reported to the Cell2.
  • Step 104 The UE obtains the TAs on the Cell2 and the Cel1 through the random access procedure or the process of acquiring the TA, and obtains the difference between the uplink delays of the Cell2 and the Celll according to the TAs on the Cell2 and the Cel1, according to the difference of the uplink delay.
  • the packet adjustment result of Cell2 is determined, packet adjustment information is obtained, and the packet adjustment information is notified to the base station.
  • the user equipment determines that the cell 2 to be grouped is classified into the existing cell
  • the TA group (group 0); when the difference is greater than the group threshold, it is determined that Cell2 is assigned to the new TA group; when the difference is equal to the group threshold, it is determined that the Cell2 is classified into the existing TA group or the new TA group. Yes.
  • the packet adjustment information includes information indicating that the serving cell to be grouped into the existing TA group or information indicating that the serving cell to be grouped into the new TA group or information indicating that the current packet of the serving cell to be packetized is not required to be adjusted.
  • the user equipment in the packet adjustment information includes a cell identifier or a secondary serving cell identifier of the serving cell to be grouped, and/or a cell identifier or a secondary serving cell identifier of the serving cell selected in the existing TA group, and includes the indication that the serving cell is to be grouped When you enter the information of the existing TA group,
  • the group adjustment information further includes a group number of the existing TA group to which the serving cell to be grouped is allocated, or a cell identifier or a secondary serving cell identifier of a certain serving cell in the existing TA group.
  • Step 105 The base station determines whether to adjust the packet of Cell2 according to the information provided by the UE, and if it does not need to adjust the packet of Cell2, it ends; if the packet of Cell2 needs to be adjusted, the packet of Cell2 is modified.
  • the base station After receiving the packet adjustment information, the base station includes the group number or the existing TA included in the packet adjustment information when the packet adjustment information includes information indicating that the serving cell to be grouped into the existing TA group is included.
  • the packet adjustment information when the packet adjustment information includes information indicating that the current packet of the serving cell to be grouped is not required to be adjusted, the reserved serving cell is reserved in the current packet.
  • the secondary serving cell When the user equipment configures the secondary serving cell for the user equipment, when the secondary serving cell enters the synchronization state from the out-of-synchronization state, when the base station notifies the secondary serving cell that the packet needs to be adjusted, when the secondary serving cell group needs to be adjusted, The secondary serving cell will be used as a serving cell to be packetized, and packet adjustment information is sent to the base station.
  • the to-be-packet serving cell is a secondary serving cell newly allocated by the base station for the user equipment or a secondary serving cell in the TA group of the user equipment.
  • the user equipment may also include, in the packet adjustment information, a difference between the uplink delay of the serving cell to be grouped and the uplink delay of the serving cell selected in the existing TA group, that is, the uplink delay of Cell2 and the Celll The difference in uplink delay is notified to the base station.
  • the difference of the uplink delay is the result of the value of the uplink delay of the serving cell to be packet minus the value of the uplink delay of the serving cell selected in the existing TA group; or the serving cell selected in the existing TA group.
  • the value of the uplink delay is subtracted from the value of the uplink delay of the serving cell to be packetized.
  • the user equipment also needs to compare the value of the uplink delay to the value of the uplink delay of the serving cell to be subtracted from the value of the uplink delay of the serving cell selected in the existing TA group, or is it in the existing TA group.
  • the value of the uplink delay of the selected serving cell is subtracted from the value of the uplink delay of the serving cell to be packetized, and the notification of the corresponding device uses the corresponding packet threshold; or the difference of the uplink delay is selected by default.
  • Delay The difference is the value of the uplink delay of the serving cell to be grouped minus the value of the uplink delay of the serving cell selected in the existing TA group; or the difference of the uplink delay is selected by default in the existing TA group.
  • the value of the uplink delay of the selected serving cell minus the value of the uplink delay of the serving cell to be packetized.
  • the base station compares the difference between the uplink delay of the serving cell to be selected and the uplink delay of the selected serving cell in the existing TA group with a preset packet threshold to determine the TA group of the serving cell to be grouped. When the difference is less than the packet threshold, the base station determines to divide the to-be-packaged serving cell into the existing TA group; when the difference is greater than the packet threshold, determines that the to-be-packaged serving cell is allocated to the newly created TA group; When the value is determined, it is determined that the service cell to be grouped can be classified into an existing TA group or a new TA group.
  • the user equipment may also include the current TA of the serving cell to be grouped in the packet adjustment information, and the existing
  • the difference between the current TA of the TA group and the downlink delay of the serving cell to be grouped and the serving cell selected in the existing TA group that is, the difference between the current TA of Celll and Cell2 and the downlink delay of Cell2 and the downlink delay of Celll .
  • the base station receives the packet adjustment information when the downlink delay difference is the value of the downlink delay of the to-be-packet serving cell minus the value of the downlink delay of the serving cell selected in the existing TA group. And taking the value of the current TA of the to-be-packet serving cell minus the value of the current TA of the existing TA group minus the downlink delay difference, as the uplink of the to-be-packet serving cell The difference between the delay and the uplink delay of the serving cell in the existing TA group is compared with the preset packet threshold to determine the TA group of the serving cell to be grouped.
  • the downlink delay difference is a value of the downlink delay of the serving cell selected in the existing TA group, and the value of the downlink delay of the to-be-packet serving cell is subtracted; the base station receives the packet adjustment After the information, the value of the current TA of the existing TA group is subtracted from the value of the current TA of the to-be-packaged serving cell minus the downlink delay difference, as the to-packet serving cell
  • the difference between the uplink delay and the uplink delay of the serving cell in the existing TA group is compared with the preset packet threshold to determine the TA group of the serving cell to be grouped.
  • the UE sends the detection information on the designated serving cell, such as SRS (Sounding Reference Symbols), and the base station determines the result of the grouping.
  • the Cell is configured as a Pcell for the UE, belonging to the group 0. , in order to be compatible with RellO, this can be considered
  • the default is group 0, that is, RRC explicit configuration is not required.
  • the method includes:
  • Step 201 The base station configures Cell2 for the UE, belonging to group 1;
  • Step 202 The base station activates Cell2;
  • Step 203 The base station notifies the UE to send the SRS on Celll and Cell2 at the same time;
  • Step 204 The base station determines, according to the time when the SRS is received on the Cell1 and the Cell2, the grouping result of the cell2.
  • the base station subtracts the time when the detection information is received from the Cell 2 and the time when the detection information is received from the Celll, and obtains the difference between the uplink delay of the Cell 2 and the uplink delay of the Cell, and the uplink delay The difference is compared with a preset packet threshold to determine the TA group of Cell2.
  • Step 205 If the adjustment is not needed, the process ends here, and if adjustment is needed, the base station adjusts the packet of Cell2.
  • the base station is a base station having carrier aggregation capability, and is governed by four cells, namely Celll, Cell2, Cell3, and Cell4. Some or all of these four 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 Celll of the base station (or the network switches the UE1 to the Celll of the base station), and the Celll provides the NAS (Non-Access Stratum) layer mobility information, such as the PLMN (Public Land).
  • NAS Non-Access Stratum
  • PLMN Public Land
  • the information such as the Mobile Network, the public land mobile network, the global cell identifier CGI, and the location area identifier TAC is the primary serving cell (Pcell) of the UE1, and the UE1 only receives the system message and the paging message of the primary serving cell.
  • Celll and Cell2 are common cells
  • Cell3 is an RRH cell
  • Cell4 is configured with a repeater.
  • the cell IDs of Celll, Cell2, Cell3, and Cell4 are 0, 1, 2, and 3, respectively.
  • the three cells are FDD cells. For the TDD cell, the process is the same, and the description is not repeated here.
  • the current Pcell is group 0, as shown in Figure 3.
  • Step 1 The base station configures Cell2 as a secondary serving cell according to the capability of UE1, and the serving cell identifier of Cell2 is 1 and belongs to group 1;
  • Step 2 The base station activates Cell2;
  • Step 3 The base station notifies the terminal to acquire the TA of the Cell 2, may perform a random access procedure on the Cell 2, or acquire the process of the TA, and notify the packet adjustment information that needs to be reported to the Cell 2;
  • Step 4 After obtaining the TA of the Cell2, the terminal calculates the difference between the uplink delays of the Celll and the Cell2.
  • Step 5 The terminal notifies the base station according to the calculation result, and can classify the Cell2 into the group 0, that is, the packet needs to be adjusted, and the notification message may include
  • the cell identifier to be adjusted, such as Cell2, may also include an adjusted packet, such as group 0, or a cell identifier included in group 0.
  • Pcell is 0;
  • Step 6 The base station decides to classify Cell2 into group 0, and notifies the terminal by using an RRC reconfiguration message.
  • the terminal may also be notified by the MAC signaling to adjust the packet.
  • the base station may also classify Cell2 into group 0. Then, in step 5, the terminal notifies the base station according to the calculation result, and keeps the current packet of Cell2, that is, does not need to adjust the packet.
  • the current terminal aggregates Celll and Cell2.
  • Celll belongs to group 0 and cell2 belongs to group 0, as shown in Figure 4.
  • Step 1 As the traffic volume increases, the base station configures Cell3 as the secondary serving cell according to the capability of UE1, and the secondary service cell identifier of Cell3 is 2, which belongs to group 1;
  • Step 2 The base station activates Cell3;
  • Step 3 The base station notifies the terminal to acquire the TA of the Cell3, performs a random access procedure on the Cell3, or acquires the TA, and notifies the packet adjustment information that needs to be reported to the Cell3.
  • Step 4 After the terminal obtains the TA of Cell3, the difference between the uplink delays of Celll and Cell3 is calculated. Because Cell2 and Celll belong to the same group, the terminal can also calculate the difference between the uplink delays of Cell2 and Cell3, or calculate simultaneously. The difference between the uplink delay of Celll and Cell3 and the uplink delay of Cell2 and Cell3;
  • Step 5 The terminal notifies the base station according to the calculation result, and maintains the current grouping manner.
  • Cell3 may also be configured in advance. In step 1, because of the increased traffic, Cell3 needs to be activated, and then the subsequent process is continued.
  • the base station may also classify the cell 2 into the group 0. Then, in step 5, the terminal notifies the base station according to the calculation result that the cell 2 cannot be classified into the group 0, that is, the cell group needs to be assigned a new TA group. Group 1.
  • the current terminal aggregates Celll, Cell2, and Cell3.
  • Celll belongs to group 0
  • Cell2 belongs to group 0
  • Cell3 belongs to group 1, as shown in Figure 4.
  • Step 1 As the traffic volume increases, the base station configures Cell4 as the auxiliary monthly service cell according to the capability of UE1, and the secondary service cell identifier of Cell4 is 3, which belongs to group 2;
  • Step 2 The base station activates Cell4;
  • Step 3 The base station notifies the terminal to acquire the TA of the cell 4, performs a random access procedure on the cell 4, or acquires the TA process, and notifies the packet adjustment information that needs to be reported to the cell 4;
  • Step 4 After obtaining the TA of Cell4, the terminal calculates the difference between the uplink delays of Cell1 and Cell4, and Cell3 and Cell4, and calculates the uplink delay difference between Cell2 and Cell4.
  • Step 5 The terminal notifies the base station to keep the current packet mode according to the calculation result.
  • Step 6 The terminal removes the coverage of the repeater in the cell 4.
  • the base station can discover the packet of the cell 4 by using the SRS on the cell 4, and notify the terminal that the packet needs to be reported to the cell 4. Adjusting the information; or the terminal always monitors the uplink delay difference between Celll and Cell4, and Cell3 and Cell4, and also detects the uplink delay difference between Cell2 and Cell4, and finds that the packet adjustment information is sent to the base station when the packet of Cell4 needs to be adjusted;
  • the terminal moves out of the coverage of the repeater in Cell4, causing Cell4 to lose the uplink synchronization into the out-of-synchronization state, it needs to re-synchronize the uplink into the synchronization state, obtain the current TA, and then continue the subsequent steps.
  • Step 7 The terminal calculates the difference between the uplink delays of Cell1 and Cell4, and Cell3 and Cell4, and calculates the uplink delay difference between Cell2 and Cell4.
  • Step 8 The terminal notifies the base station according to the calculation result, and may classify the Cell3 into the group 0, and may include the serving cell identifier of the Cell3 or the secondary serving cell identifier.
  • Step 9 The base station decides to classify Cell4 into group 0, and notifies the terminal by using an RRC reconfiguration message. If Cell 4 is already deactivated when step 6 is executed, it needs to be activated first, and then the subsequent process is performed.
  • the terminal may directly notify the base station Celll and Cell4, and the difference between the uplink delays of Cell3 and Cell4, and may also include the uplink delay difference between Cell2 and Cell4, that is, notify the uplink of the base station Celll and Cell4.
  • the delay of the delay is the uplink delay of Celll, the uplink delay of Cell4, or the uplink delay of Cell4, the uplink delay of Celll, and may also include the cell identifier of the Celll and Cell4 or the secondary serving cell identifier, and may also include Is the uplink delay of Celll minus the uplink delay of Cell4, or the uplink delay of Cell4 minus the uplink delay of Celll, and the uplink delay difference of Cell3 and Cell4, and may also include the cell identity or the secondary service cell identifier of Cell3 and Cell4.
  • the uplink delay difference between Cell2 and Cell4 may also be included, and the cell identifier or the secondary service cell identifier of Cell2 and Cell4 may also be included;
  • the UE notifies the base station of the TA value of the packet in which Celll, Cell3, and Cell4 are located, and the downlink delay difference between Celll and Cell4, and Cell3 and Cell4, and may also include the TA value of the packet in which Cell2 is located, and may also include the Cell2 and Cell4.
  • the downlink delay difference that is, the TA value of the packet in which the base station Celll is located, may also include the cell identifier of the Celll, the TA value of the packet in which the Cell3 is located, and may also include the cell identity of the Cell3 or the secondary serving cell identity, and the TA value of the packet in which the Cell4 is located.
  • the cell identifier of the Cell 4 or the secondary cell identifier may also be included, and may also include the TA value of the packet in which Cell 2 is located, and may also include the cell identity of the Cell 2 or the secondary cell identifier.
  • the downlink delay difference between Celll and Cell 4 is the downlink of the Celll.
  • Delay-Cell4 downlink delay may also include Celll and Cell4 cell identity or secondary serving cell identity, and may also include Celll's downlink delay minus Cell4 Downlink delay, or the downlink delay of Cell4 minus the downlink delay of Celll, and the lowering of Cell3 and Cell4 Delay difference, and may further comprise a cell identification Cell3 or secondary serving cell identity Cell4 the like, and may further comprise Cell2 Cell4 downlink delay difference, and may further comprise a cell identification Cell2 or secondary serving cell identity Cell4 the like.
  • the base station determines the packet of the Cell 4, and compares the difference of the uplink delay of the serving cell with a preset packet threshold to determine the TA group of the serving cell to be grouped.
  • the difference of the uplink delay can be obtained by calculation, that is, the TA values of the two serving cells are subtracted and the downlink delay difference of the two serving cells is subtracted, and the TA values of the two serving cells are reduced to the same
  • the TA of one serving cell subtracts the TA of the second serving cell, and the downlink delay difference of the two serving cells is the downlink time of the first serving cell - the downlink time of the second serving cell, the first service
  • the cell may be Celll
  • the second serving cell may be Cell4, or the first serving cell may be Cell4, the second service The cell can be Celll.
  • the two serving cells may be classified into the same group for unified management, and when the uplink delay difference between the two serving cells is greater than the packet threshold, this is The two serving cells need to be managed separately. If the uplink delay difference of the two serving cells is equal to the packet threshold, the two serving cells may be separately or uniformly managed.
  • the current Pcell is group 0, as shown in Figure 6.
  • Step 1 The base station 1 configures Cell2 as a secondary serving cell according to the capability of UE1, and the serving cell identifier of Cell2 is 1 and belongs to group 1;
  • Step 2 The base station activates Cell2;
  • Step 3 The base station notifies the terminal to send the SRS on Celll and Cell2 at the same time, and the parameters of the SRS sent by Celll and Cell2, such as the time-frequency domain resource, may be respectively indicated, or indicated as the same;
  • Step 4 The terminal uses the Pcell as the time reference according to the indication of the base station, or according to the default rule, or uses the downlink indicated by the SIB2, such as Celll and Cell2, as the time reference, and sends the SRS of the Celll and the Cell2 in the specified time-frequency domain resource, and sends the SRP.
  • SIB2 such as Celll and Cell2
  • the TEs of both Celll and Cell2 are temporarily set to 0, and after the transmission is completed, the original value is restored;
  • Step 5 The base station calculates the difference between the uplink delays of the Celll and the Cell2 according to the time when the SRS is received on the Celll and the Cell2 (that is, the difference between the time that the base station receives the Celll and the time sent to the SRS on the Cell2). The difference determines the result of the group adjustment, and the Cell2 is classified into the group 0;
  • Step 6 The base station adjusts the packet of Cell2 by RRC reconfiguration.
  • the current terminal aggregates Celll and Cell2.
  • Celll belongs to group 0, and Cell2 belongs to group 0, as shown in Figure 7.
  • Step 1 As the traffic volume increases, the base station configures Cell3 as the secondary serving cell according to the capability of UE1, and the secondary service cell identifier of Cell3 is 2, which belongs to group 1;
  • Step 2 The base station activates Cell3;
  • Step 3 The base station informs the terminal to simultaneously send SRS, Celll and Cell3 on Celll and Cell3.
  • the parameters for transmitting the SRS such as the time-frequency domain resources, may be indicated separately or indicated as the same one; since the Celll and the Cell2 belong to the same group, the terminal may also be notified to simultaneously send the SRS on Cell2 and Cell3.
  • Step 4 The terminal uses the Pcell as the time reference according to the indication of the base station or according to the default rule, or uses the downlink indicated by the SIB2, such as Celll and Cell3, as the time reference, and sends the SRS of the Celll and the Cell3 in the specified time-frequency domain resource, and sends the SRP.
  • SIB2 such as Celll and Cell3
  • SRS the TE of Celll and Cell3 are temporarily set to 0, and after the transmission is completed, the original value is restored;
  • Step 5 The base station calculates the difference between the uplink delays of Celll and Cell3 according to the time when the SRS is received on Celll and Cell3, and determines the packet adjustment result according to the difference, and maintains the current grouping mode.
  • the current terminal aggregates Celll, Cell2, and Cell3.
  • Celll belongs to group 0
  • Cell2 belongs to group 0
  • Cell3 belongs to group 1, as shown in Figure 8.
  • Step 1 As the traffic volume increases, the base station configures Cell4 as the auxiliary monthly service cell according to the capability of UE1, and the secondary service cell identifier of Cell4 is 3, which belongs to group 2;
  • Step 2 The base station activates Cell4;
  • Step 3 The base station notifies the terminal to send the SRS on Celll, Cell3, and Cell4 at the same time, and the parameters for sending the SRS on Celll, Cell3, and Cell4, such as the time-frequency domain resource, may be respectively indicated, or indicated as the same;
  • Step 4 The terminal uses the Pcell as a time reference according to the indication of the base station or according to the default rule, or uses the downlinks indicated by the SIB2, such as Celll, Cell3, and Cell4, as time references, and sends the Cellell, Cell3, and Cell4 in the specified time-frequency domain resource.
  • SIB2 such as Celll, Cell3, and Cell4
  • SRS when sending SRS, temporarily set the TA of Celll, Cell3 and Cell4 to 0, and restore the original value after sending.
  • Step 5 The base station calculates the difference of the uplink delays of Celll and Cell4, Cell3, and Cell4 according to the time of receiving the SRS on Celll, Cell3, and Cell4, and determines the packet adjustment result according to the difference, and maintains the current grouping mode;
  • Step 6 The terminal removes the coverage of the repeater in the Cell4, and the base station can discover the packet of the Cell4 through the SRS on the Cell4, notify the terminal, and simultaneously send the SRS on the Celll, Cell3, and Cell4;
  • Step 7 The terminal uses the Pcell as a time reference according to the indication of the base station or according to the default rule, or uses the downlinks indicated by the SIB2, such as Celll, Cell3, and Cell4, as time references, and sends the Cellell, Cell3, and Cell4 in the specified time-frequency domain resource.
  • SIB2 such as Celll, Cell3, and Cell4, as time references
  • Step 8 The base station calculates the difference between the uplink delays of Celll and Cell4, Cell3, and Cell4 according to the time when the SRS is received on Celll, Cell3, and Cell4, and determines the packet adjustment result according to the difference, and classifies the Cell4 into Group 0;
  • Step 9 The base station adjusts the packet of Cell4 by RRC reconfiguration.
  • step 5 If Cell4 is already deactivated when step 5 is executed, it needs to be activated first, and then the subsequent process is performed.
  • FIG. 9 is a user equipment of the embodiment, including: an information determining unit and an information sending unit, where:
  • the information determining unit is configured to determine packet adjustment information for the packet serving cell, where the packet adjustment information includes information indicating that the to-packet serving cell is allocated to an existing time advance (TA) group or indicates that the to-packet serving cell is allocated to the new TA.
  • the information or indication of the group does not need to adjust the information of the current grouping of the serving cell to be grouped;
  • the information sending unit is configured to send the packet adjustment information to the base station.
  • the information determining unit is further configured to: when the group adjustment information includes the information indicating that the serving cell to be grouped into the existing TA group, the group information further includes the group number of the existing TA group to be classified into the serving cell to be grouped. , or the cell identity or the secondary serving cell identity of the serving cell in the existing TA group.
  • 10 is a base station based on the foregoing user equipment, including: an information receiving unit and a packet adjusting unit, where:
  • An information receiving unit configured to receive packet adjustment information
  • a packet adjustment unit configured to: when the information about the group to be grouped into the existing TA group is included in the packet adjustment information, the service cell to be grouped is classified into a group number included in the group adjustment information or an existing TA group.
  • the cell identifier of the serving cell or the existing TA group pointed to by the secondary serving cell identifier is included; when the packet adjustment information includes information indicating that the current packet of the serving cell to be grouped is not required to be adjusted, the service to be grouped d and the area are reserved in the current packet.
  • the user equipment includes: an information determining unit and an information sending unit, where:
  • an information determining unit configured to determine, according to the packet serving cell, packet adjustment information, where the packet adjustment information includes a difference between an uplink delay of the serving cell to be grouped and an uplink delay of the selected serving cell in the existing TA group;
  • the information sending unit is configured to send the packet adjustment information to the base station.
  • the base station includes: an information receiving unit and a packet adjusting unit, where:
  • An information receiving unit configured to receive packet adjustment information
  • a packet adjustment unit configured to compare a difference between an uplink delay of the serving cell to be grouped and an uplink delay of the selected serving cell in the existing TA group with a preset grouping threshold to determine a TA group of the serving cell to be grouped.
  • the user equipment includes: an information determining unit and an information sending unit, where:
  • an information determining unit configured to determine packet adjustment information, where the packet adjustment information includes a current TA of the serving cell to be grouped, a current TA of the existing TA group, and a serving cell selected by the to-be-packaged serving cell and the existing TA group. Downside delay difference;
  • the information sending unit is configured to send the packet adjustment information to the base station.
  • the base station includes: an information receiving unit and a packet adjusting unit, where:
  • An information receiving unit configured to receive packet adjustment information
  • a packet adjustment unit configured to: when the downlink delay difference is a value of a downlink delay of a serving cell to be grouped, and a value of a downlink delay of the serving cell selected by the existing TA group, The value of the current TA of the cell minus the value of the current TA of the existing TA group minus the downlink delay difference, as the uplink delay of the serving cell to be packetized and the uplink of the serving cell in the existing TA group The difference of the delay is compared with the preset packet threshold to determine the TA group of the serving cell to be grouped; or, the downlink delay difference is the downlink of the selected serving cell in the existing TA group.
  • the value of the delay is subtracted from the value of the downlink delay of the serving cell to be packetized
  • the value of the current TA of the existing TA group is subtracted from the value of the current TA of the serving cell to be packet minus the downlink delay.
  • the result of the difference as the uplink delay of the serving cell to be grouped and the serving cell in the existing TA group
  • the difference of the uplink delay is compared with the preset packet threshold by the difference of the uplink delay to determine the TA group of the serving cell to be grouped.
  • FIG. 11 is a base station according to an embodiment of the present invention, including: a detection information triggering unit and a packet adjusting unit, where:
  • a detection information triggering unit configured to instruct the user equipment to report the detection information to the base station on the serving cell selected by the to-be-packet serving cell and the existing TA group;
  • a packet adjustment unit configured to determine, according to a time when the detection information is received, a grouping result of the serving cell to be grouped.
  • a user equipment based on the foregoing base station, including: a signaling receiving unit and a detection information sending unit, where:
  • a signaling receiving unit configured to receive, by the base station, an instruction for reporting the detection information to the base station simultaneously on the serving cell selected by the to-be-packet serving cell and the existing TA group;
  • the check information sending unit is configured to report the detection information to the base station simultaneously on the serving cell selected by the to-be-packet serving cell and the existing TA group.
  • the embodiment of the present invention solves the problem of grouping a secondary serving cell, enables the terminal to accurately maintain each group, reduces redundant management overhead, and improves user experience.

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Abstract

对服务小区进行分组的方法、用户设备及基站，包括：用户设备向基站发送分组调整信息，所述分组调整信息中包含指示将待分组服务小区划入已有时间提前量(TA)组的信息或指示将所述待分组服务小区划入新建TA组的信息或指示无需调整待分组服务小区当前分组的信息。解决了对辅服务小区的分组问题，使终端能够准确地维护各个分组，减少冗余的管理开销，提高用户体验。

Description

一种对服务小区进行分组的方法、 用户设备及基站
技术领域
本发明涉及无线通信领域， 尤其涉及一种对服务小区进行分组的方法、 用户设备及基站。 背景技术
LTE ( Long Term Evolution, 长期演进）系统中， 处于连接态的 UE ( User Equipment, 用户设备）在给基站发送数据前， 需要实现与基站的上行同步和 下行同步。 当 UE对某个小区执行过测量后， 即已经取得与该小区的下行同 步， 否则， 需要执行类似小区搜索的过程。 上行同步是通过执行随机接入过 程来实现的， 在随机接入过程中还能获取到发送时间提前量（Time Advance, 简称 TA ) , ΤΑ主要用于 UE确定发送数据的时刻， UE实现上行同步后， 启 动上行同步定时器（ timeAlignmentTimer, 简称为 TAT )， 若 UE能在 TAT超 时之前接收到基站发送给 UE的时间提前量，则认为该 UE与该基站之间保持 上行同步； 否则， TAT超时， UE认为失去上行同步， 失去上行同步后， 如 果还需要给基站发送数据， 则需要重新实现上行同步。 由于 LTE系统中小区 只有一个载波， 因此一个终端只有一个 TA。
为向移动用户提供更高的数据速率， 高级长期演进系统 （Long Term Evolution Advance , 简称 LTE-A )提出了载波聚合技术（ Carrier Aggregation , 简称 CA ) , 其目的是为具有相应能力的 UE提供更大宽带， 提高 UE的峰值 速率。 LTE中， 系统支持的最大下行传输带宽为 20MHz, 载波聚合是将两个 或者更多的分量载波（Component Carriers , 简称 CC ) 聚合起来支持大于 20MHz, 最大不超过 100MHz的传输带宽， 初期阶段配置 UL CC (上行分量 载波 ) 的总数小于等于 DL CC (下行分量载波 ) 的总数。
具有载波聚合能力的 LTE-A UE, 可以同时在多个分量载波上收发数据， 以下涉及的 UE除了特别说明都是具有载波聚合能力的 UE。 LTE-A系统中， UE进入连接态后可以同时通过多个分量载波（如 CC1和 CC2 )与基站进行 通信， 基站会通过显式的配置或者按照协议约定为 UE指定一个主分量载波 ( Primary Component Carrier , PCC ) , 其他的分量载波称为辅分量载波 ( Secondary Component Carrier, SCC )。 在 PCC上的服务小区称为主服务小 区（Primary Cell, Pcell ) , 在 SCC上的服务小区称为辅服务小区（Secondary Cell, Scell ) 。 辅服务小区是在 UE进入连接态后基站为 UE配置的。
一般情况下， 服务小区都有对称的上行分量载波和下行分量载波（Scell 可以只配置下行 )并在 SIB2 ( system information block 2, 系统消息块 2 ) 中 明确指出， 为了避免控制信道的干扰， 引入了跨载波调度的概念， 即当某个 Scell的 PDCCH (物理下行控制信道信 )干扰比较严重的情况下， 该 Scell的 PDCCH就不启用， 而是通过另外一个服务小区来调度该 Scell的 PDSCH, 这 里的另外一个服务小区可以通过 RRC (无线资源控制）信令配置。 基站只为 一个 UE分配一个 C-RNTI (小区无线网络临时标识） ， 即每个服务小区的 C-RNTI是相同的。 每个服务小区都有一个配置的标识， 称为服务小区标识， Pcell的服务小区标识固定为 0。 对于辅服务小区， 还有单独的辅服务小区标 识， 辅服务小区的辅服务小区标识跟对应的服务小区标识相同。
载波聚合初期阶段 (即 RellO ) , Scell的个数比较少如只有 1个， 而且 场景也有限制如不支持上行 RRH ( Remote radio header, 射频拉远单元）和 repeater (中继器） ， 因此只存在一个 TA, UE只需要在 Pcell发起上行同步 即可， Scell上不会发起。
后续阶段（即 Rell l ) ， 由于数据量的提升， Scell的个数会增多， 如增 加到 4个， 场景也会放宽， 如支持上行 RRH和 repeater, —个 TA不能满足 需要， 因此会引入多个 TA。 为了管理方便， 针对每个 UE使用相同的 TA的 服务小区归入一个 TA组 , 如何分组由 RRC配置。 此时， 包含 Pcell的 TA组 只需要在 Pcell上发起上行同步，同步后，该组内其他小区自动进入同步状态。 没有包含 Pcell的 TA组， 必须在某个 Scell上发起上行同步， 并且在该 Scell 激活后才执行随机接入过程， Scell必须在上行同步完成后才能进行正常的上 行数据发送， 同样， Scell同步后， 该组内其他小区自动进入同步状态。 目前 对于基站为 UE配置的每个辅服务小区， 如何对辅服务小区分组， 目前尚未 有相关的方法。 发明内容
本发明要解决的技术问题是提供一种对服务 d、区进行分组的方法、 用户 设备及基站， 能够实现对辅服务小区进行分组。
为解决上述技术问题， 本发明的一种对服务小区进行分组的方法， 包括： 用户设备向基站发送分组调整信息， 所述分组调整信息中包含用以确定待分 组服务小区如何划分 TA组的指示。
优选地， 上述对服务小区进行分组的方法， 包括： 用户设备向基站发送 分组调整信息， 所述分组调整信息中包含指示将待分组服务小区划入已有时 间提前量 (TA)组的信息或指示将所述待分组服务小区划入新建 TA组的信息 或指示无需调整待分组服务小区当前分组的信息。
优选地， 所述分组调整信息还包含所述待分组服务小区的小区标识或辅 服务小区标识。
优选地， 还包括： 所述用户设备在所述分组调整信息中包含指示将所述 待分组服务小区划入已有 TA组的信息时， 在所述分组信息中还包含将所述 待分组服务小区划入的已有 TA组的组编号，或所述已有 TA组中的服务小区 的小区标识或辅月良务小区标识。
优选地， 还包括： 所述基站在接收到所述分组调整信息后， 在所述分组 调整信息中包含指示将待分组服务小区划入已有 TA组的信息时， 将所述待 分组服务小区划入所述分组调整信息中包含的组编号或所述已有 TA组中的 服务小区的小区标识或辅服务小区标识指向的已有 TA组中； 在所述分组调 整信息中包含指示将待分组服务小区划入新建 TA组的信息时， 将所述待分 组服务小区划入新建 TA组中； 在所述分组调整信息中包含指示无需调整待 分组服务小区当前分组的信息时，保留所述待分组服务小区在当前的分组中。
优选地， 所述用户设备在基站为该用户设备配置辅服务小区时， 或在辅 服务小区由失步状态进入同步状态时， 或在基站通知辅服务小区的分组需要 调整时， 或在发现辅服务小区分组需要调整时， 将所述辅服务小区作为所述 待分组服务小区， 向基站发送分组调整信息。
优选地， 上述对服务小区进行分组的方法， 包括： 用户设备向基站发送分组调整信息， 所述分组调整信息中包含待分组服 务小区的上行时延与已有 TA组中选择的服务小区的上行时延的差值。
优选地， 所述分组调整信息还包含所述待分组服务小区的小区标识或辅 服务小区标识， 和 /或已有 TA组中选择的服务小区的小区标识或辅服务小区 标识。
优选地， 还包括： 所述基站在接收到所述分组调整信息时， 将待分组服 务小区的上行时延与已有 TA组中选择的服务小区的上行时延的差值与预先 设置的分组阔值进行比较， 确定所述待分组服务小区的 TA组。
优选地， 还包括： 所述用户设备还将所述上行时延的差值是所述待分组 服务小区的上行时延的取值减去所述已有 TA组中选择的服务小区的上行时 延的取值的结果， 或者是所述已有 TA组中选择的服务小区的上行时延的取 值减去所述待分组服务小区的上行时延的取值的结果， 通知到基站；
所述基站根据所述用户设备的通知， 将所述上行时延的差值与相对应的 分组阔值进行比较， 确定所述待分组服务小区的 TA组。
优选地， 所述基站确定所述待分组服务小区的 TA组包括至少以下之一： 所述基站在所述差值小于所述分组阔值时， 确定将所述待分组服务小区 划入所述已有 TA组中； 在所述差值大于所述分组阔值时， 确定所述待分组 服务小区划入新建 TA组； 在所述差值等于所述分组阔值时， 确定将所述待 分组服务小区划入所述已有 TA组或新建 TA组中。
优选地， 上述对服务小区进行分组的方法， 包括： 用户设备向基站发送 分组调整信息， 所述分组调整信息中包含待分组服务小区的当前 TA、 已有 TA组的当前 TA以及所述待分组服务小区与所述已有 TA组中选择的服务小 区的下行时延差值。
优选地， 所述分组调整信息还包含所述待分组服务小区的小区标识或辅 服务小区标识， 和 /或已有 TA组中选择的服务小区的小区标识或辅服务小区 标识。
优选地， 还包括： 所述下行时延差值为所述待分组服务小区的下行时延 的取值减去所述已有 TA组中选择的服务小区的下行时延的取值的结果； 所述基站接收到所述分组调整信息后，取所述待分组服务小区的当前 TA 的取值减去所述已有 TA组的当前 TA的取值减去所述下行时延差值的结果， 作为所述待分组服务小区的上行时延与已有 TA组中的服务小区的上行时延 的差值， 将所述上行时延的差值与预先设置的分组阔值进行比较， 确定所述 待分组服务小区的 TA组。
优选地， 还包括： 所述下行时延差值为所述已有 TA组中选择的服务小 区的下行时延的取值减去所述待分组服务小区的下行时延的取值的结果； 所述基站接收到所述分组调整信息后，取所述已有 TA组的当前 TA的取 值减去所述待分组服务小区的当前 TA的取值减去所述下行时延差值的结果， 作为所述待分组服务小区的上行时延与已有 TA组中的服务小区的上行时延 的差值， 将所述上行时延的差值与预先设置的分组阔值进行比较， 确定所述 待分组服务小区的 TA组。
一种对服务小区进行分组的方法， 包括：
基站指示用户设备在待分组服务小区以及已有 TA组中选择的服务小区 上向所述基站上报检测信息；
所述用户设备按照所述基站的指示在所述待分组服务小区以及已有 TA 组中选择的服务小区上同时向所述基站上报检测信息；
所述基站根据接收到所述检测信息的时间确定所述待分组服务小区的分 组结果。
优选地， 所述基站根据接收到所述检测信息时间确定所述待分组服务小 区的分组结果， 包括： 所述基站将从所述待分组服务小区上接收到所述检测 信息的时间与从所述已有 TA组中选择的服务小区上接收到所述检测信息的 时间相减， 得到所述待分组服务小区的上行时延与已有 TA组中选择的服务 小区的上行时延的差值， 将所述上行时延的差值与预先设置的分组阔值进行 比较， 确定所述待分组服务小区的 TA组。
一种用户设备， 包括： 信息确定单元和信息发送单元， 其中：
所述信息确定单元设置为： 对待分组服务小区确定分组调整信息。
优选地， 所述信息确定单元设置为： 对待分组服务小区确定分组调整信 息，所述分组调整信息中包含指示将待分组服务小区划入已有时间提前量 (TA) 组的信息或指示将所述待分组服务小区划入新建 TA组的信息或指示无需调 整待分组服务小区当前分组的信息；
所述信息发送单元设置为： 向基站发送分组调整信息。
优选地， 所述信息确定单元还设置为： 在所述分组调整信息中包含指示 将所述待分组服务小区划入已有 TA组的信息时， 在所述分组信息中还包含 将所述待分组服务小区划入的已有 TA组的组编号，或所述已有 TA组中的服 务小区的小区标识或辅服务小区标识。
优选地， 所述信息确定单元设置为： 对待分组服务小区确定分组调整信 息， 所述分组调整信息中包含待分组服务小区的上行时延与已有 TA组中选 择的服务小区的上行时延的差值；
所述信息发送单元设置为： 向基站发送分组调整信息。
优选地， 所述信息确定单元设置为： 对待分组服务小区确定分组调整信 息， 所述分组调整信息中包含待分组服务小区的当前 TA、 已有 TA组的当前 TA以及所述待分组服务小区与所述已有 TA组中选择的服务小区的下行时延 差值；
所述信息发送单元设置为： 向基站发送分组调整信息。
一种基于上述用户设备的基站， 包括： 信息接收单元和分组调整单元， 其中： 所述分组调整单元设置为： 根据接收的分组调整信息的指示， 将待分 组服务小区划入已有 TA组的信息。
优选地， 所述信息接收单元设置为： 接收分组调整信息；
所述分组调整单元设置为： 在所述分组调整信息中包含指示将待分组服 务小区划入已有 TA组的信息时， 将所述待分组服务小区划入所述分组调整 信息中包含的组编号或所述已有 TA组中的服务小区的小区标识或辅服务小 区标识指向的已有 TA组中； 在所述分组调整信息中包含指示无需调整待分 组服务小区当前分组的信息时， 保留所述待分组服务小区在当前的分组中。
优选地， 所述信息接收单元设置为： 接收分组调整信息；
所述分组调整单元设置为： 将待分组服务小区的上行时延与已有 TA组 中选择的服务小区的上行时延的差值与预先设置的分组阔值进行比较， 确定 所述待分组服务小区的 TA组。
优选地， 所述信息接收单元设置为： 接收分组调整信息；
所述分组调整单元设置为： 在所述下行时延差值为所述待分组服务小区 的下行时延的取值减去所述已有 TA组中选择的服务小区的下行时延的取值 的结果时，取所述待分组服务小区的当前 TA的取值减去所述已有 TA组的当 前 TA的取值减去所述下行时延差值的结果， 作为所述待分组服务小区的上 行时延与已有 TA组中的服务小区的上行时延的差值， 将所述上行时延的差 值与预先设置的分组阔值进行比较， 确定所述待分组服务小区的 TA组。
一种基站， 包括： 检测信息触发单元和分组调整单元， 其中：
所述检测信息触发单元设置为： 指示用户设备在待分组服务小区以及已 有 TA组中选择的服务小区上向所述基站上报检测信息；
所述分组调整单元设置为： 根据接收到所述检测信息的时间确定所述待 分组服务小区的分组结果。
一种基于上述基站的用户设备， 包括： 信令接收单元和检测信息发送单 元， 其中：
所述信令接收单元设置为：接收基站指示在待分组服务小区以及已有 TA 组中选择的服务小区上同时向所述基站上报检测信息的指令；
所述检查信息发送单元设置为： 在所述待分组服务小区以及已有 TA组 中选择的服务小区上同时向所述基站上报检测信息。
综上所述， 本发明实施例解决了对辅服务小区的分组问题， 使终端能够 准确地维护各个分组， 减少冗余的管理开销， 提高用户体验。 附图概述
图 1为本发明实施例对服务小区进行分组的方法一的流程图;
图 2为本发明实施例对服务小区进行分组的方法二的流程图；
图 3~8为本发明应用示例 1~6的流程图； 图 9为本发明实施方式的用户设备的架构图；
图 10为本发明实施方式的基站的架构图；
图 11为本发明的另一实施方式的用户设备的架构图；
图 12为本发明的另一实施方式的基站的架构图。 本发明的较佳实施方式
本实施方式中可以釆用以下两种方法对辅服务小区进行分组。
方法一：
当前为 UE配置 Celll为 Pcell, 属于组 0, 为与 RellO兼容， 可以认为此 时默认为组 0, 即不需要 RRC显式配置， 假设基站为 UE 配置辅服务小区 Cell2, Cell2作为待分组服务小区， 如图 1所示， 该方法包括：
步骤 101 : 基站为 UE配置辅服务小区 Cell2, 设置 Cell2属于组 2;
步骤 102: 基站通过 MAC信令激活 Cell2;
步骤 103: 基站指示 UE获取 Cell2上的 TA, 并通知需要上报 Cell2的分 组调整信息；
步骤 104: UE通过随机接入过程或其他获取 TA的过程， 获得 Cell2和 Celll上的 TA, 根据 Cell2和 Celll上的 TA获取 Cell2与 Celll的上行时延的 差值， 根据上行时延的差值确定 Cell2的分组调整结果， 得到分组调整信息， 将分组调整信息通知基站。
用户设备在差值小于分组阔值时，确定将待分组服务小区 Cell2划入已有
TA组（组 0 ) 中； 在差值大于分组阔值时， 确定 Cell2划入新建 TA组； 在 所述差值等于分组阔值时，确定将 Cell2划入已有 TA组或新建 TA组中均可。
分组调整信息包含指示将待分组服务小区划入已有 TA组的信息或指示 将待分组服务小区划入新建 TA组的信息或指示无需调整待分组服务小区当 前分组的信息。 用户设备在分组调整信息包含待分组服务小区的小区标识或 辅服务小区标识， 和 /或已有 TA组中选择的服务小区的小区标识或辅服务小 区标识， 并且在包含指示将待分组服务小区划入已有 TA组的信息时， 在分 组调整信息中还包含将待分组服务小区划入的已有 TA组的组编号， 或已有 TA组中的某个服务小区的小区标识或辅服务小区标识。
步骤 105: 基站根据 UE提供的信息， 决定是否调整 Cell2的分组， 如果 不需要调整 Cell2的分组， 则结束； 如果需要调整 Cell2的分组， 则修改 Cell2 的分组。
基站在接收到分组调整信息后， 在分组调整信息中包含指示将待分组服 务小区划入已有 TA组的信息时， 将待分组服务小区划入分组调整信息中包 含的组编号或已有 TA组中的服务小区的小区标识或辅服务小区标识指向的 已有 TA组中；在分组调整信息中包含指示将待分组服务小区划入新建 TA组 的信息时， 将待分组服务小区划入新建 TA组中； 在分组调整信息中包含指 示无需调整待分组服务小区当前分组的信息时， 保留待分组服务小区在当前 的分组中。
用户设备除了在基站为该用户设备配置辅服务小区外， 在辅服务小区由 失步状态进入同步状态时， 在基站通知辅服务小区的分组需要调整时， 在发 现辅服务小区分组需要调整时， 将均将辅服务小区作为待分组服务小区， 向 基站发送分组调整信息。
待分组服务小区是基站为用户设备新分配的辅服务小区或用户设备已有 TA组中的辅服务小区。
不仅如此， 用户设备也可以在分组调整信息中包含待分组服务小区的上 行时延与已有 TA组中选择的服务小区的上行时延的差值， 即： 将 Cell2的上 行时延与 Celll的上行时延的差值通知基站。
上行时延的差值为待分组服务小区的上行时延的取值减去已有 TA组中 选择的服务小区的上行时延的取值的结果； 或为已有 TA组中选择的服务小 区的上行时延的取值减去待分组服务小区的上行时延的取值的结果。 用户设 备还要将上行时延的差值是待分组服务小区的上行时延的取值减去已有 TA 组中选择的服务小区的上行时延的取值的结果， 还是已有 TA组中选择的服 务小区的上行时延的取值减去待分组服务小区的上行时延的取值的结果， 通 设备的通知釆用相对应的分组阔值； 或者上行时延的差值默认选择上行时延 的差值为待分组服务小区的上行时延的取值减去已有 TA组中选择的服务小 区的上行时延的取值的结果； 或者上行时延的差值默认选择已有 TA组中选 择的服务小区的上行时延的取值减去待分组服务小区的上行时延的取值的结 果。
基站将待分组服务小区的上行时延与已有 TA组中选择的服务小区的上 行时延的差值与预先设置的分组阔值进行比较， 确定所述待分组服务小区的 TA组。 基站在差值小于分组阔值时， 确定将待分组服务小区划入已有 TA组 中； 在差值大于分组阔值时， 确定待分组服务小区划入新建 TA组； 在差值 等于分组阔值时，确定将待分组服务小区划入已有 TA组或新建 TA组中均可。
用户设备还可以在分组调整信息中包含待分组服务小区的当前 TA、已有
TA组的当前 TA以及待分组服务小区与已有 TA组中选择的服务小区的下行 时延差值， 即： Celll和 Cell2的当前 TA以及 Cell2的下行时延与 Celll的下 行时延的差值。
在下行时延差值为所述待分组服务小区的下行时延的取值减去所述已有 TA组中选择的服务小区的下行时延的取值的结果时，基站接收到分组调整信 息后， 取所述待分组服务小区的当前 TA的取值减去所述已有 TA组的当前 TA的取值减去所述下行时延差值的结果，作为所述待分组服务小区的上行时 延与已有 TA组中的服务小区的上行时延的差值， 将所述上行时延的差值与 预先设置的分组阔值进行比较， 确定所述待分组服务小区的 TA组。
在下行时延差值为所述已有 TA组中选择的服务小区的下行时延的取值 减去所述待分组服务小区的下行时延的取值的结果； 基站接收到所述分组调 整信息后，取所述已有 TA组的当前 TA的取值减去所述待分组服务小区的当 前 TA的取值减去所述下行时延差值的结果， 作为所述待分组服务小区的上 行时延与已有 TA组中的服务小区的上行时延的差值， 将所述上行时延的差 值与预先设置的分组阔值进行比较， 确定所述待分组服务小区的 TA组。
方法二：
如图 2所示， 通过 UE同时在指定的服务小区上发送检测信息， 如 SRS ( Sounding Reference Symbols, 探测参考符号） ， 由基站来决定分组结果， 当前为 UE配置了 Celll为 Pcell, 属于组 0, 为了与 RellO兼容， 可以认为此 时默认为组 0, 即不需要 RRC显式配置， 该方法包括：
步骤 201 : 基站为 UE配置 Cell2, 属于组 1 ;
步骤 202: 基站激活 Cell2;
步骤 203: 基站通知 UE同时在 Celll和 Cell2上发送 SRS;
步骤 204: 基站根据在 Celll和 Cell2上收到 SRS的时间， 确定 Cell2的 分组结果；
基站将从所述 Cell2上接收到所述检测信息的时间与从 Celll上接收到所 述检测信息的时间相减， 得到 Cell2的上行时延与 Celll的上行时延的差值， 将上行时延的差值与预先设置的分组阔值进行比较， 确定 Cell2的 TA组。
步骤 205:如果不需要调整，过程到此结束，如果需要调整，基站将 Cell2 的分组调整。
下面对技术方案的实施作进一步的详细描述。
假设在 LTE-A系统中，基站是具有载波聚合能力的基站，管辖四个小区， 分别是 Celll、 Cell2、 Cell3和 Cell4。 这四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通过基站的 Celll 接入了网络（或者是网络将 UE1切换到基站的 Celll ) , Celll为 UE1提供 NAS ( Non-Access Stratum, 非接入层）层移动性信息， 如 PLMN ( Public Land Mobile Network, 公共陆地移动网络）、全局小区标识 CGI、位置区标识 TAC 等信息， 是 UE1的主服务小区 （Pcell ) , UE1只接收主服务小区的系统消息 和寻呼消息。 Celll和 Cell2是普通的小区， Cell3是 RRH小区， Cell4配置了 repeater。 Celll、 Cell2、 Cell3和 Cell4的服务小区标识分别是 0, 1 , 2, 3。 这三个小区是 FDD的小区， 对于 TDD的小区， 流程相同， 此处不再重复描 述。
实施例 1 :
默认当前 Pcell为组 0 , 如图 3所示。
步骤一： 基站根据 UE1的能力为其配置 Cell2作为辅服务小区， Cell2的 服务小区标识是 1 , 归入组 1 ;
步骤二： 基站激活 Cell2; 步骤三： 基站通知终端获取 Cell2的 TA, 可以在 Cell2上执行随机接入 过程， 或获取 TA的过程， 并通知需要上报 Cell2的分组调整信息；
步骤四：终端获得 Cell2的 TA后，计算 Celll和 Cell2的上行时延的差值； 步骤五： 终端根据计算结果， 通知基站， 可以将 Cell2归入组 0, 即需要 调整分组， 通知消息可以包含需要调整的小区标识如 Cell2为 1 , 还可以包含 调整后的分组如组 0, 或者组 0包含的小区标识本实施例为 Pcell即 0;
步骤六： 基站决定将 Cell2归入组 0, 通过 RRC重配消息通知终端。 上述步骤五， 也可以通过 MAC信令通知终端调整分组。
上述步骤一， 基站也可以将 Cell2归入组 0, 之后在步骤五， 终端根据计 算结果， 通知基站， 保持 Cell2当前的分组， 即不需要调整分组。
实施例 2:
当前终端将 Celll和 Cell2进行聚合， Celll为 Pcell属于组 0, Cell2属于 组 0, 如图 4所示。
步骤一： 由于业务量增多， 基站根据 UE1的能力为其配置 Cell3作为辅 服务小区， Cell3的辅服务小区标识是 2, 归入组 1 ;
步骤二： 基站激活 Cell3;
步骤三： 基站通知终端获取 Cell3的 TA, 在 Cell3上执行随机接入过程， 或获取 TA的过程， 并通知需要上报 Cell3的分组调整信息；
步骤四：终端获得 Cell3的 TA后，计算 Celll和 Cell3的上行时延的差值， 因为 Cell2和 Celll属于同一个组， 因此终端也可以计算 Cell2和 Cell3的上行 时延的差值， 或者同时计算 Celll和 Cell3的上行时延的差值和 Cell2和 Cell3 的上行时延的差值；
步骤五： 终端根据计算结果， 通知基站， 保持当前的分组方式。
本实施例中， 也可以事先配置 Cell3 , 在步骤一， 由于业务量增多， 需要 激活 Cell3 , 然后继续后续流程。
上述步骤一， 基站也可以将 Cell2归入组 0, 之后在步骤五， 终端根据计 算结果， 通知基站， 不能将 Cell2归入组 0, 即需要给 Cell2分配新的 TA组如 组 1。
实施例 3:
当前终端将 Celll、 Cell2和 Cell3进行聚合, Celll为 Pcell属于组 0, Cell2 属于组 0, Cell3属于组 1 , 如图 4所示。
步骤一： 由于业务量增多， 基站根据 UE1的能力为其配置 Cell4作为辅 月良务小区， Cell4的辅服务小区标识是 3 , 归入组 2;
步骤二： 基站激活 Cell4;
步骤三： 基站通知终端获取 Cell4的 TA, 在 Cell4上执行随机接入过程， 或获取 TA的过程， 并通知需要上报 Cell4的分组调整信息；
步骤四：终端获得 Cell4的 TA后，计算 Celll和 Cell4,以及 Cell3和 Cell4 的上行时延的差值， 还可以计算 Cell2和 Cell4的上行时延差值；
步骤五： 终端根据计算结果， 通知基站， 保持当前的分组方式； 步骤六： 终端移出 Cell4中 repeater的覆盖范围， 基站可以通过 Cell4上 的 SRS发现需要调整 Cell4的分组，通知终端需要上报 Cell4的分组调整信息； 或者终端一直监测 Celll和 Cell4, 以及 Cell3和 Cell4的上行时延差， 还可以 检测 Cell2和 Cell4的上行时延差， 发现 Cell4的分组需要调整时向基站发送 分组调整信息；
如果终端移出 Cell4中 repeater的覆盖范围， 使得 Cell4失去上行同步进 入失步状态， 则需要重新进行上行同步进入同步状态， 获取当前 TA, 然后继 续后续步骤。
步骤七：终端计算 Celll和 Cell4, 以及 Cell3和 Cell4的上行时延的差值， 还可以计算 Cell2和 Cell4的上行时延差；
步骤八： 终端根据计算结果， 通知基站， 可以将 Cell3归入组 0, 可以包 含 Cell3的服务小区标识或辅服务小区标识；
步骤九： 基站决定将 Cell4归入组 0, 通过 RRC重配消息通知终端。 如果执行步骤六的时候 Cell4已经处于去激活状态，需要先激活， 然后执 行后续过程。 上述步骤五和步骤八，终端也可以直接通知基站 Celll和 Cell4,以及 Cell3 和 Cell4的上行时延的差值， 还可以包含 Cell2和 Cell4的上行时延差值， 即 通知基站 Celll和 Cell4的上行时延的差值为 Celll的上行时延 -Cell4的上行时 延， 或者为 Cell4的上行时延 -Celll 的上行时延， 还可以包含 Celll和 Cell4 的小区标识或辅服务小区标识， 还可以包含是 Celll的上行时延减 Cell4的上 行时延， 还是 Cell4的上行时延减 Celll的上行时延， 以及 Cell3和 Cell4的上 行时延差， 还可以包含 Cell3和 Cell4的小区标识或辅服务小区标识， 还可以 包含 Cell2和 Cell4的上行时延差，还可以包含 Cell2和 Cell4的小区标识或辅 服务小区标识；
或者， UE将 Celll、 Cell3和 Cell4所在分组的 TA值，以及 Celll和 Cell4 , 以及 Cell3和 Cell4的下行时延差值通知基站， 还可以包含 Cell2所在分组的 TA值， 还可以包含 Cell2和 Cell4的下行时延差值， 即通知基站 Celll所在分 组的 TA值， 还可以包含 Celll的小区标识， Cell3所在分组的 TA值， 还可以 包含 Cell3的小区标识或辅服务小区标识， Cell4所在分组的 TA值， 还可以 包含 Cell4的小区标识或辅服务小区标识， 还可以包含 Cell2所在分组的 TA 值，还可以包含 Cell2的小区标识或辅服务小区标识， Celll和 Cell4的下行时 延差值为 Celll的下行时延 -Cell4的下行时延，或者为 Cell4的下行时延 -Celll 的下行时延， 还可以包含 Celll和 Cell4的小区标识或辅服务小区标识， 还可 以包含是 Celll的下行时延减 Cell4的下行时延，还是 Cell4的下行时延减 Celll 的下行时延， 以及 Cell3和 Cell4的下行时延差， 还可以包含 Cell3和 Cell4的 小区标识或辅服务小区标识等， 还可以包含 Cell2和 Cell4的下行时延差， 还 可以包含 Cell2和 Cell4的小区标识或辅服务小区标识等。
基站决定 Cell4的分组，将服务小区的上行时延的差值与预先设置的分组 阔值进行比较， 确定所述待分组服务小区的 TA组。 上行时延的差值可以通 过计算获得， 即两个服务小区所在分组的 TA值相减再减去这两个服务小区 的下行时延差， 两个服务小区所在分组的 TA值相减为第一个服务小区的 TA 减去第二个服务小区的 TA,两个服务小区的下行时延差为第一个服务小区的 下行时间-第二个服务小区的下行时间， 所述第一个服务小区可以为 Celll , 第二个服务小区可以为 Cell4, 或者第一个服务小区可以为 Cell4, 第二个服 务小区可以为 Celll。
如果两个服务小区的上行时延差小于所述分组阔值时， 这两个服务小区 可以归入同一个组统一管理， 两个服务小区的上行时延差大于所述分组阔值 时， 这两个服务小区需要分开管理， 如果两个服务小区的上行时延差等于所 述分组阔值时， 这两个服务小区分开或统一管理都可以。
实施例 4:
默认当前 Pcell为组 0 , 如图 6所示。
步骤一： 基站 1根据 UE1的能力为其配置 Cell2作为辅服务小区， Cell2 的服务小区标识是 1 , 归入组 1 ;
步骤二： 基站激活 Cell2;
步骤三： 基站通知终端同时在 Celll和 Cell2上发送 SRS, Celll和 Cell2 上发送 SRS的参数如时频域资源可以分别指示， 或者指示为同一个；
步骤四： 终端按照基站的指示， 或者按照默认规则， 将 Pcell作为时间参 考， 或分别以 SIB2指示的下行如 Celll和 Cell2作为时间参考， 在指定的时 频域资源发送 Celll和 Cell2的 SRS,发送 SRS时， 将 Celll和 Cell2的 TA都 临时设置为 0, 发送完后， 恢复原来的值；
步骤五：基站根据在 Celll和 Cell2上收到 SRS的时间，计算 Celll和 Cell2 的上行时延的差值（即基站收到 Celll和 Cell2上发送到 SRS的时间的差值）， 才艮据这个差值决定分组调整结果， 将 Cell2归入组 0;
步骤六： 基站通过 RRC重配调整 Cell2的分组。
实施例 5:
当前终端将 Celll和 Cell2进行聚合， Celll为 Pcell属于组 0, Cell2属于 组 0, 如图 7所示。
步骤一： 由于业务量增多， 基站根据 UE1的能力为其配置 Cell3作为辅 服务小区， Cell3的辅服务小区标识是 2, 归入组 1 ;
步骤二： 基站激活 Cell3;
步骤三： 基站通知终端同时在 Celll和 Cell3上发送 SRS, Celll和 Cell3 上发送 SRS的参数如时频域资源可以分别指示， 或者指示为同一个； 由于 Celll和 Cell2属于同一个组， 也可以通知终端同时在 Cell2和 Cell3 上发送 SRS。
步骤四： 终端按照基站的指示， 或者按照默认规则， 将 Pcell作为时间参 考， 或分别以 SIB2指示的下行如 Celll和 Cell3作为时间参考， 在指定的时 频域资源发送 Celll和 Cell3的 SRS,发送 SRS时， 将 Celll和 Cell3的 TA都 临时设置为 0, 发送完后， 恢复原来的值；
步骤五：基站根据在 Celll和 Cell3上收到 SRS的时间，计算 Celll和 Cell3 的上行时延的差值， 根据这个差值决定分组调整结果， 保持当前的分组方式。
实施例 6:
当前终端将 Celll、 Cell2和 Cell3进行聚合, Celll为 Pcell属于组 0, Cell2 属于组 0, Cell3属于组 1 , 如图 8所示。
步骤一： 由于业务量增多， 基站根据 UE1的能力为其配置 Cell4作为辅 月良务小区， Cell4的辅服务小区标识是 3 , 归入组 2;
步骤二： 基站激活 Cell4;
步骤三： 基站通知终端同时在 Celll、 Cell3和 Cell4上发送 SRS, Celll、 Cell3和 Cell4上发送 SRS的参数如时频域资源可以分别指示， 或者指示为同 一个；
步骤四： 终端按照基站的指示， 或者按照默认规则， 将 Pcell作为时间参 考， 或分别以 SIB2指示的下行如 Celll、 Cell3和 Cell4作为时间参考， 在指 定的时频域资源发送 Celll、 Cell3和 Cell4的 SRS, 发送 SRS时， 将 Celll、 Cell3和 Cell4的 TA都临时设置为 0, 发送完后， 恢复原来的值；
步骤五：基站根据在 Celll、 Cell3和 Cell4上收到 SRS的时间，计算 Celll 和 Cell4, Cell3和 Cell4的上行时延的差值，根据这些差值决定分组调整结果， 保持当前的分组方式；
步骤六： 终端移出 Cell4中 repeater的覆盖范围， 基站可以通过 Cell4上 的 SRS发现需要调整 Cell4的分组， 通知终端， 重新同时在 Celll、 Cell3和 Cell4上发送 SRS; 步骤七： 终端按照基站的指示， 或者按照默认规则， 将 Pcell作为时间参 考， 或分别以 SIB2指示的下行如 Celll、 Cell3和 Cell4作为时间参考， 在指 定的时频域资源发送 Celll、 Cell3和 Cell4的 SRS, 发送 SRS时， 将 Celll、 Cell3和 Cell4的 TA都临时设置为 0, 发送完后， 恢复为原来的值；
步骤八：基站根据在 Celll、 Cell3和 Cell4上收到 SRS的时间，计算 Celll 和 Cell4, Cell3和 Cell4的上行时延的差值， ， 根据这些差值决定得出分组调 整结果， 将 Cell4归入组 0;
步骤九： 基站通过 RRC重配调整 Cell4的分组。
如果执行步骤五的时候 Cell4已经处于去激活状态，需要先激活， 然后执 行后续过程。
图 9为本实施方式的用户设备， 包括： 信息确定单元和信息发送单元， 其中：
信息确定单元， 用于对待分组服务小区确定分组调整信息， 分组调整信 息中包含指示将待分组服务小区划入已有时间提前量 (TA)组的信息或指示将 待分组服务小区划入新建 TA组的信息或指示无需调整待分组服务小区当前 分组的信息；
信息发送单元， 用于向基站发送分组调整信息。
信息确定单元， 还用于在分组调整信息中包含指示将待分组服务小区划 入已有 TA组的信息时， 在分组信息中还包含将待分组服务小区划入的已有 TA组的组编号， 或已有 TA组中的服务小区的小区标识或辅服务小区标识。
图 10为基于上述用户设备的基站，包括：信息接收单元和分组调整单元， 其中：
信息接收单元， 用于接收分组调整信息；
分组调整单元， 用于在分组调整信息中包含指示将待分组服务小区划入 已有 TA组的信息时， 将待分组服务小区划入分组调整信息中包含的组编号 或已有 TA组中的服务小区的小区标识或辅服务小区标识指向的已有 TA组 中；在分组调整信息中包含指示无需调整待分组服务小区当前分组的信息时， 保留待分组服务 d、区在当前的分组中。 在另一种实施方式中， 用户设备， 包括： 信息确定单元和信息发送单元， 其中：
信息确定单元， 用于对待分组服务小区确定分组调整信息， 分组调整信 息中包含待分组服务小区的上行时延与已有 TA组中选择的服务小区的上行 时延的差值；
信息发送单元， 用于向基站发送分组调整信息。
基站包括： 信息接收单元和分组调整单元， 其中：
信息接收单元， 用于接收分组调整信息；
分组调整单元， 用于将待分组服务小区的上行时延与已有 TA组中选择 的服务小区的上行时延的差值与预先设置的分组阈值进行比较， 确定待分组 服务小区的 TA组。
在另一种实施方式中， 用户设备， 包括： 信息确定单元和信息发送单元， 其中：
信息确定单元， 用于对待分组服务小区确定分组调整信息， 分组调整信 息中包含待分组服务小区的当前 TA、 已有 TA组的当前 TA以及待分组服务 小区与已有 TA组中选择的服务小区的下行时延差值；
信息发送单元， 用于向基站发送分组调整信息。
基站包括： 信息接收单元和分组调整单元， 其中：
信息接收单元， 用于接收分组调整信息；
分组调整单元， 用于在下行时延差值为待分组服务小区的下行时延的取 值减去已有 TA组中选择的服务小区的下行时延的取值的结果时， 取待分组 服务小区的当前 TA的取值减去已有 TA组的当前 TA的取值减去下行时延差 值的结果， 作为待分组服务小区的上行时延与已有 TA组中的服务小区的上 行时延的差值， 将上行时延的差值与预先设置的分组阈值进行比较， 确定待 分组服务小区的 TA组； 或者，在下行时延差值为已有 TA组中选择的服务小 区的下行时延的取值减去待分组服务小区的下行时延的取值的结果时， 取已 有 TA组的当前 TA的取值减去待分组服务小区的当前 TA的取值减去下行时 延差值的结果， 作为待分组服务小区的上行时延与已有 TA组中的服务小区 的上行时延的差值， 将上行时延的差值与预先设置的分组阔值进行比较， 确 定待分组服务小区的 TA组。
图 11为本实施方式的一种基站， 包括： 检测信息触发单元和分组调整单 元， 其中：
检测信息触发单元， 用于指示用户设备在待分组服务小区以及已有 TA 组中选择的服务小区上向基站上报检测信息；
分组调整单元， 用于根据接收到检测信息的时间确定待分组服务小区的 分组结果。
图 12为基于以上基站的用户设备， 包括： 信令接收单元和检测信息发送 单元， 其中：
信令接收单元， 用于接收基站指示在待分组服务小区以及已有 TA组中 选择的服务小区上同时向基站上报检测信息的指令；
检查信息发送单元， 用于在待分组服务小区以及已有 TA组中选择的服 务小区上同时向基站上报检测信息。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保护 范围， 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保护范围之内。
工业实用性 本发明实施例解决了对辅服务小区的分组问题， 使终端能够准确地维护 各个分组， 减少冗余的管理开销， 提高用户体验。

Claims

权 利 要 求 书
1、 一种对服务小区进行分组的方法， 包括： 用户设备向基站发送分组调 整信息， 所述分组调整信息中包含用以确定待分组服务小区如何划分 TA组 的指示。
2、 如权利要求 1所述的方法， 其中， 包括： 用户设备向基站发送分组调 整信息， 所述分组调整信息中包含指示将待分组服务小区划入已有时间提前 量 (TA)组的信息或指示将所述待分组服务小区划入新建 TA组的信息或指示 无需调整待分组服务 d、区当前分组的信息。
3、 如权利要求 2所述的方法，其中， 所述分组调整信息还包含所述待分 组服务小区的小区标识或辅服务小区标识。
4、 如权利要求 2所述的方法， 其中， 还包括：
所述用户设备在所述分组调整信息中包含指示将所述待分组服务小区划 入已有 TA组的信息时， 在所述分组信息中还包含将所述待分组服务小区划 入的已有 TA组的组编号，或所述已有 TA组中的服务小区的小区标识或辅服 务小区标识。
5、 如权利要求 4所述的方法， 其中， 还包括：
所述基站在接收到所述分组调整信息后， 在所述分组调整信息中包含指 示将待分组服务小区划入已有 TA组的信息时， 将所述待分组服务小区划入 所述分组调整信息中包含的组编号或所述已有 TA组中的服务小区的小区标 识或辅服务小区标识指向的已有 TA组中； 在所述分组调整信息中包含指示 将待分组服务小区划入新建 TA组的信息时， 将所述待分组服务小区划入新 建 TA组中； 在所述分组调整信息中包含指示无需调整待分组服务小区当前 分组的信息时， 保留所述待分组服务 d、区在当前的分组中。
6、 如权利要求 2所述的方法，其中， 所述用户设备在基站为该用户设备 配置辅服务小区时， 或在辅服务小区由失步状态进入同步状态时， 或在基站 通知辅服务小区的分组需要调整时， 或在发现辅服务小区分组需要调整时， 将所述辅服务小区作为所述待分组服务小区， 向基站发送分组调整信息。
7、 如权利要求 1所述的方法， 包括： 用户设备向基站发送分组调整信息， 所述分组调整信息中包含待分组服 务小区的上行时延与已有 TA组中选择的服务小区的上行时延的差值。
8、 如权利要求 7所述的方法， 其中，
所述分组调整信息还包含所述待分组服务小区的小区标识或辅服务小区 标识， 和 /或已有 TA组中选择的服务小区的小区标识或辅服务小区标识。
9、 如权利要求 7所述的方法， 其中， 还包括：
所述基站在接收到所述分组调整信息时， 将待分组服务小区的上行时延 与已有 TA组中选择的服务小区的上行时延的差值与预先设置的分组阔值进 行比较， 确定所述待分组服务小区的 TA组。
10、 如权利要求 9所述的方法， 其中， 还包括：
所述用户设备还将所述上行时延的差值是所述待分组服务小区的上行时 延的取值减去所述已有 TA组中选择的服务小区的上行时延的取值的结果， 或者是所述已有 TA组中选择的服务小区的上行时延的取值减去所述待分组 服务小区的上行时延的取值的结果， 通知到基站；
所述基站根据所述用户设备的通知， 将所述上行时延的差值与相对应的 分组阔值进行比较， 确定所述待分组服务小区的 TA组。
11、 如权利要求 10所述的方法，其中， 所述基站确定所述待分组服务小 区的 TA组包括至少以下之一：
所述基站在所述差值小于所述分组阔值时， 确定将所述待分组服务小区 划入所述已有 TA组中；
在所述差值大于所述分组阔值时，确定所述待分组服务小区划入新建 TA 组；
在所述差值等于所述分组阔值时， 确定将所述待分组服务小区划入所述 已有 TA组或新建 TA组中。
12、 如权利要求 1所述的方法， 包括：
用户设备向基站发送分组调整信息， 所述分组调整信息中包含待分组服 务小区的当前 TA、 已有 TA组的当前 TA以及所述待分组服务小区与所述已 有 TA组中选择的服务小区的下行时延差值。
13、 如权利要求 12所述的方法， 其中，
所述分组调整信息还包含所述待分组服务小区的小区标识或辅服务小区 标识， 和 /或已有 TA组中选择的服务小区的小区标识或辅服务小区标识。
14、 如权利要求 12所述的方法， 其中， 还包括：
所述下行时延差值为所述待分组服务小区的下行时延的取值减去所述已 有 TA组中选择的服务小区的下行时延的取值的结果；
所述基站接收到所述分组调整信息后，取所述待分组服务小区的当前 TA 的取值减去所述已有 TA组的当前 TA的取值减去所述下行时延差值的结果， 作为所述待分组服务小区的上行时延与已有 TA组中的服务小区的上行时延 的差值， 将所述上行时延的差值与预先设置的分组阔值进行比较， 确定所述 待分组服务小区的 TA组。
15、 如权利要求 12所述的方法， 其中， 还包括：
所述下行时延差值为所述已有 TA组中选择的服务小区的下行时延的取 值减去所述待分组服务小区的下行时延的取值的结果；
所述基站接收到所述分组调整信息后，取所述已有 TA组的当前 TA的取 值减去所述待分组服务小区的当前 TA的取值减去所述下行时延差值的结果， 作为所述待分组服务小区的上行时延与已有 TA组中的服务小区的上行时延 的差值， 将所述上行时延的差值与预先设置的分组阔值进行比较， 确定所述 待分组服务小区的 TA组。
16、 一种对服务小区进行分组的方法， 包括：
基站指示用户设备在待分组服务小区以及已有 TA组中选择的服务小区 上向所述基站上报检测信息；
所述用户设备按照所述基站的指示在所述待分组服务小区以及已有 TA 组中选择的服务小区上同时向所述基站上报检测信息；
所述基站根据接收到所述检测信息的时间确定所述待分组服务小区的分 组结果。
17、 如权利要求 16所述的方法，其中， 所述基站根据接收到所述检测信 息时间确定所述待分组服务小区的分组结果， 包括：
所述基站将从所述待分组服务小区上接收到所述检测信息的时间与从所 述已有 TA组中选择的服务小区上接收到所述检测信息的时间相减， 得到所 述待分组服务小区的上行时延与已有 TA组中选择的服务小区的上行时延的 差值， 将所述上行时延的差值与预先设置的分组阔值进行比较， 确定所述待 分组服务小区的 TA组。
18、 一种用户设备， 包括： 信息确定单元和信息发送单元， 其中： 所述信息确定单元设置为： 对待分组服务小区确定分组调整信息。
19、 如权利要求 18所述的用户设备， 其中：
所述信息确定单元设置为： 对待分组服务小区确定分组调整信息， 所述 分组调整信息中包含指示将待分组服务小区划入已有时间提前量 (TA)组的信 息或指示将所述待分组服务小区划入新建 TA组的信息或指示无需调整待分 组服务小区当前分组的信息；
所述信息发送单元设置为： 向基站发送分组调整信息。
20、 如权利要求 19所述的用户设备， 其中，
所述信息确定单元还设置为： 在所述分组调整信息中包含指示将所述待 分组服务小区划入已有 TA组的信息时， 在所述分组信息中还包含将所述待 分组服务小区划入的已有 TA组的组编号，或所述已有 TA组中的服务小区的 小区标识或辅月良务小区标识。
21、 如权利要求 18所述的用户设备， 其中：
所述信息确定单元设置为： 对待分组服务小区确定分组调整信息， 所述 分组调整信息中包含待分组服务小区的上行时延与已有 TA组中选择的服务 小区的上行时延的差值；
所述信息发送单元设置为： 向基站发送分组调整信息。
22、 如权利要求 18所述的用户设备， 其中：
所述信息确定单元设置为： 对待分组服务小区确定分组调整信息， 所述 分组调整信息中包含待分组服务小区的当前 TA、 已有 TA组的当前 TA以及 所述待分组服务小区与所述已有 TA组中选择的服务小区的下行时延差值； 所述信息发送单元设置为： 向基站发送分组调整信息。
23、 一种基于权利要求 18的用户设备的基站， 包括： 信息接收单元和分 组调整单元， 其中：
所述分组调整单元设置为： 根据接收的分组调整信息的指示， 将待分组 服务小区划入已有 TA组的信息。
24、 如权利要求 23所述的基站， 其中：
所述信息接收单元设置为： 接收分组调整信息；
所述分组调整单元设置为： 在所述分组调整信息中包含指示将待分组服 务小区划入已有 TA组的信息时， 将所述待分组服务小区划入所述分组调整 信息中包含的组编号或所述已有 TA组中的服务小区的小区标识或辅服务小 区标识指向的已有 TA组中； 在所述分组调整信息中包含指示无需调整待分 组服务小区当前分组的信息时， 保留所述待分组服务小区在当前的分组中。
25、 如权利要求 23所述的基站， 其中：
所述信息接收单元设置为： 接收分组调整信息；
所述分组调整单元设置为： 将待分组服务小区的上行时延与已有 TA组 中选择的服务小区的上行时延的差值与预先设置的分组阔值进行比较， 确定 所述待分组服务小区的 TA组。
26、 如权利要求 23所述的基站， 其中：
所述信息接收单元设置为： 接收分组调整信息；
所述分组调整单元设置为： 在所述下行时延差值为所述待分组服务小区 的下行时延的取值减去所述已有 TA组中选择的服务小区的下行时延的取值 的结果时，取所述待分组服务小区的当前 TA的取值减去所述已有 TA组的当 前 TA的取值减去所述下行时延差值的结果， 作为所述待分组服务小区的上 行时延与已有 TA组中的服务小区的上行时延的差值， 将所述上行时延的差 值与预先设置的分组阔值进行比较， 确定所述待分组服务小区的 TA组。
27、 一种基站， 包括： 检测信息触发单元和分组调整单元， 其中： 所述检测信息触发单元设置为： 指示用户设备在待分组服务小区以及已 有 TA组中选择的服务小区上向所述基站上报检测信息；
所述分组调整单元设置为： 根据接收到所述检测信息的时间确定所述待 分组服务小区的分组结果。
28、 一种基于权利要求 27的基站的用户设备， 包括： 信令接收单元和检 测信息发送单元， 其中：
所述信令接收单元设置为：接收基站指示在待分组服务小区以及已有 TA 组中选择的服务小区上同时向所述基站上报检测信息的指令；
所述检查信息发送单元设置为： 在所述待分组服务小区以及已有 TA组 中选择的服务小区上同时向所述基站上报检测信息。
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