WO2017173647A1 - Procédé de configuration de cellules secondaires, station de base et équipement utilisateur - Google Patents

Procédé de configuration de cellules secondaires, station de base et équipement utilisateur Download PDF

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Publication number
WO2017173647A1
WO2017173647A1 PCT/CN2016/078782 CN2016078782W WO2017173647A1 WO 2017173647 A1 WO2017173647 A1 WO 2017173647A1 CN 2016078782 W CN2016078782 W CN 2016078782W WO 2017173647 A1 WO2017173647 A1 WO 2017173647A1
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Prior art keywords
scell
scells
activated
deactivated
associations
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PCT/CN2016/078782
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English (en)
Inventor
Huayu Zhou
Eddy Chiu
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Huizhou Tcl Mobile Communication Co., Ltd
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Application filed by Huizhou Tcl Mobile Communication Co., Ltd filed Critical Huizhou Tcl Mobile Communication Co., Ltd
Priority to CN201680084422.9A priority Critical patent/CN109479217B/zh
Priority to PCT/CN2016/078782 priority patent/WO2017173647A1/fr
Publication of WO2017173647A1 publication Critical patent/WO2017173647A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink

Definitions

  • the present disclosure relates to the field of mobile communications, and more particularly, to a secondary cell (SCell) configuration method, a communication method, a base station and a user equipment (UE) .
  • SCell secondary cell
  • UE user equipment
  • LTE-Advanced Long Term Evolution-Advanced
  • Carrier aggregation enables multiple contiguous or non-contiguous carriers to be used together to provide service for a user equipment (UE) , in order to provide the required traffic rates.
  • UE user equipment
  • Each carrier corresponds to an independent cell.
  • the concepts of primary cell (PCell) and secondary cell (SCell) are introduced, which correspond respectively to a primary carrier and a second carrier that are currently aggregated to a UE.
  • the PCell and SCell can all be referred to as serving cells.
  • the PCell handles the Radio Resource Control (RRC) connection of the UE and is always activated.
  • RRC Radio Resource Control
  • the number of SCells can vary.
  • the SCells provide resource supplement, and can be configured through RRC reconfiguration, which includes the addition and release of an SCell in the UE's serving cells set.
  • An SCell has two states at the UE side-activated or deactivated.
  • the UE cannot transmit data over a deactivated SCell, and may periodically measure the deactivated SCells in the UE's serving cells set and upload a corresponding measurement report to a base station via the PCell.
  • An SCell freshly configured to the UE is deactivated, and can be used only when it is activated.
  • the base station can send an instruction to the UE to modify the state of the SCell.
  • the base station may first add the SCell A to the UE and send an instruction to the UE to activate the SCell A, when the base station determines that the UE requires an SCell switch, it modifies the SCell A to the SCell B (equivalent to releasing the SCell A and adding the SCell B) to the UE and sends another instruction to the UE to deactivate the SCell A and activate the SCell B.
  • the base station may add both of the SCell A and SCell B to the UE and send an instruction to the UE to activate the SCell A, in which case the UE needs to make preparations for the deactivated SCell B, including measuring the SCell B and uploading a corresponding measurement report, when the base station determines that the UE requires an SCell switch, it directly sends an instruction to the UE to deactivate the SCell A and activate the SCell B.
  • the first method requires to configure the switched SCell (i.e., the SCell to switch to) to the UE, however, each SCell configuration requires the RRC reconfiguration which will cause delay, hence, the SCell cannot be switched in time when the switch is fast, which thus may impact the signal quality. Furthermore, when the UE is switched repeatedly between the SCell A and SCell B, the RRC reconfiguration needs to be performed repeatedly, which may cause redundant uplink data.
  • the second method requires to first configure all the SCells to the UE, which then makes preparations for the deactivated SCells, including measuring all the deactivated SCells and uploading a corresponding measurement report, hence, when there is a large number of SCells, it may cause a huge burden on the UE and a large amount of uplink data. Thus, when the UE requires a fast switch among a large number of SCells, both methods are flawed.
  • a primary technical problem to be solved by the disclosure is to provide a secondary cell (SCell) configuration method, a communication method, a base station and a user equipment (UE) , which can solve the problem that the current SCell configuration methods cannot meet the requirements when a UE needs a fast switch among a large number of SCells.
  • SCell secondary cell
  • UE user equipment
  • a technical solution adopted by the disclosure is to provide an SCell configuration method.
  • the method comprises: preparing the associations between at least three SCells for a user equipment (UE) , where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, transmitting the associations to the UE to configure at least a part of the at least three SCells to the UE, which thus uses at least one activated SCell, measures at least one other deactivated SCell that has a correspondence with the activated SCell, and does not measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • UE user equipment
  • the associations may include the correspondences between each SCell and all its neighboring SCells, and of the at least three SCells, at least two SCells are non-neighboring.
  • the method may further include: receiving a measurement report, obtained through the measuring, from the UE, transmitting an activation/deactivation command to the UE when the UE needs to switch to the SCell indicated in the measurement report, where the activation/deactivation command is used to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the at least three SCells and a PCell correspond to one base station, and the associations are prepared by the based station.
  • the method comprises: receiving, by a user equipment (UE) , the associations between at least three SCells, executing a command of configuring at least a part of the at least three SCells to the UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, using at least one activated SCell that has been configured to the UE, measuring at least one other deactivated SCell that has a correspondence with the activated SCell, and not measuring at least one deactivated SCell that has no correspondence with the activated SCell.
  • UE user equipment
  • the UE may only perform the deactivated-SCell-measurement for the deactivated SCells that have correspondence with the activated SCell.
  • the associations may include the correspondences between each SCell and all its neighboring SCells, and of the at least three SCells, at least two SCells are non-neighboring.
  • the method may further include: uploading a measurement report obtained through the measuring, receiving an activation/deactivation command, which is generated when the UE needs to switch to the SCell indicated in the measurement report, responding to the activation/deactivation command to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the activation/deactivation command may be implemented as combined L2/L1 signaling.
  • the base station includes a preparation module configured to prepare the associations between at least three SCells for a user equipment (UE) , where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, and a transmission module configured to transmit the associations to the UE to configure at least a part of the at least three SCells to the UE, which thus uses at least one activated SCell, measures at least one other deactivated SCell that has a correspondence with the activated SCell, and does not measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • UE user equipment
  • the associations may include the correspondences between each SCell and all its neighboring SCells, and of the at least three SCells, at least two SCells are non-neighboring.
  • the base station may further include a reception module configured to receive a measurement report, obtained through the measuring, from the UE, and a control module configured to transmit an activation/deactivation command to the UE when the UE needs to switch to the SCell indicated in the measurement report, wherein the activation/deactivation command is used to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • a reception module configured to receive a measurement report, obtained through the measuring, from the UE
  • a control module configured to transmit an activation/deactivation command to the UE when the UE needs to switch to the SCell indicated in the measurement report, wherein the activation/deactivation command is used to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the UE includes a configuration module configured to receive the associations between at least three SCells, execute a command of configuring at least a part of the at least three SCells to the UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, and a measurement module configured to use at least one activated SCell that has been configured to the UE and measure at least one other deactivated SCell that has a correspondence with the activated SCell, and not to measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • a configuration module configured to receive the associations between at least three SCells, execute a command of configuring at least a part of the at least three SCells to the UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, and a measurement module configured to use at least one activated SCell that has been configured to the UE and measure at least one other deactivated SCell that has a correspondence with the
  • the measurement module may only perform the deactivated-SCell-measurement for the deactivated SCells that have correspondence with the activated SCell.
  • the UE may further include an upload module configured to upload a measurement report obtained through the measuring, a reception module configured to receive an activation/deactivation command, which is generated when the UE needs to switch to the SCell indicated in the measurement report, and a response module configured to respond to the activation/deactivation command to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • an upload module configured to upload a measurement report obtained through the measuring
  • a reception module configured to receive an activation/deactivation command, which is generated when the UE needs to switch to the SCell indicated in the measurement report
  • a response module configured to respond to the activation/deactivation command to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the base station includes a processor, a transmitter and a receiver, where the processor is connected to the transmitter and the receiver, respectively.
  • the processor is configured to prepare the associations between at least three SCells for a user equipment (UE) , where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell.
  • UE user equipment
  • the transmitter is configured to transmit the associations to the UE to configure at least a part of the at least three SCells to the UE, which thus uses at least one activated SCell, measures at least one other deactivated SCell that has a correspondence with the activated SCell, and does not measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • the processor may further receive, via the receiver, a measurement report, obtained through the measuring, from the UE, and transmit, via the transmitter, an activation/deactivation command to the UE when the UE needs to switch to the SCell indicated in the measurement report, where the activation/deactivation command is used to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the UE includes a processor, a transmitter and a receiver.
  • the processor is connected respectively to transmitter and the receiver, and configured to receive the associations between at least three SCells, execute a command of configuring at least a part of the at least three SCells to the UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, and to uses at least one activated SCell that has been configured to the UE, and measure at least one other deactivated SCell that has a correspondence with the activated SCell, and not to measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • the processor may further only perform the deactivated-SCell-measurement for the deactivated SCells that have correspondence with the activated SCell.
  • the processor may further upload, via the transmitter, a measurement report, receive, via the receiver, an activation/deactivation command, which is generated when the UE needs to switch to the SCell indicated in the measurement report, and respond to the activation/deactivation command to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the UE by preparing and sending the associations between at least three SCells to the UE, and thus configuring at least a part of the at least three SCells to the UE, the UE can switch directly between the configured SCells without RRC reconfigurations, which can reduce the impact on the signal quality due to frequent RRC reconfigurations and can reduce the possible redundant uplink data. Furthermore, the UE only needs to measure the at least one other deactivated SCell that has a correspondence with the currently activated SCell, and thus needs not measure all the deactivated SCells, which can reduce the burden on the UE and the uplink data.
  • the UE can directly acquire from the associations the other deactivated SCells to which the UE can switch to, according to the currently activated SCell (s) , and thus needs not use complex algorithms to detect the deactivated SCells, which can reduce the detection complexity.
  • FIG. 1 is a flow chart illustrating a first embodiment of an SCell configuration method according to the disclosure.
  • FIG. 2 is a flow chart illustrating a second embodiment of an SCell configuration method according to the disclosure.
  • FIG. 3 is a flow chart illustrating a first embodiment of a communication method according to the disclosure.
  • FIG. 4 is a flow chart illustrating a second embodiment of a communication method according to the disclosure.
  • FIG. 5 is a block diagram of a first embodiment of a base station according to the disclosure.
  • FIG. 6 is a block diagram of a second embodiment of a base station according to the disclosure.
  • FIG. 7 is a block diagram of a third embodiment of a base station according to the disclosure.
  • FIG. 8 is a block diagram of a first embodiment of a user equipment (UE) according to the disclosure.
  • FIG. 9 is a block diagram of a second embodiment of a UE according to the disclosure.
  • FIG. 10 is a block diagram of a third embodiment of a UE according to the disclosure.
  • a first embodiment of an SCell configuration method includes the following steps.
  • a first step S11 the associations between at least three SCells are prepared for a user equipment (UE) .
  • UE user equipment
  • the associations may include the correspondences of the UE being capable of switching from each SCell to at least one other SCell. Of the three SCells, the UE cannot switch directly between at least two SCells.
  • An SCell and a PCell may correspond to a same base station, and may be co-located or non co-located. If base stations have fast enough backhaul between each other and allow to be controlled by each other, an SCell and a PCell can also correspond to different base stations.
  • the frequency bands of the PCell and the SCell may be the same or different.
  • the associations can be demonstrated as a table, or by other data formats.
  • the associations can be demonstrated, for example, as the Table 1 shown below.
  • each row and each column respectively represent an SCell, which is denoted by any one of the indices "1" , "2" , ..., "5" in the first row and the first column (counted from left to right, top to bottom) .
  • a number “1” in the table indicates that the corresponding SCell of the row, in which this number "1” is present, can switch to the corresponding SCell of the column, in which this number "1” is present; while a number "0” indicates that the corresponding SCell of the row, in which this number "0” is present, cannot switch to the corresponding SCell of the column, in which this number "0” is present.
  • an index in the table indicates whether the corresponding SCell of the column can switch to the corresponding SCell of the row.
  • the switch between the SCells can be bidirectional, for example, if SCell 1 can be switched to SCell 2, then SCell 2 can also be switched to SCell 1, in which case the rows in the table can be interchanged with the corresponding columns.
  • letters or signs can also be used to indicate the relations as to whether an SCell can switch to another SCell.
  • SCells 1, 2 and 3 can switch between each other, SCells 3 and 4 can switch between each other, and SCells 4 and 5 can switch between each other.
  • the base station (referred to the primary base station when the PCell and the SCell are non co-located) can determine whether different SCells can switch between each other, depending on whether the SCells are neighboring, i.e., the coverage of the different SCells is overlapped, and can also define non-neighboring SCells as switchable SCells depending on their deployment, traffic load, etc.
  • the correspondences between the SCells are not static, because the base station can determine which other SCells can each SCell be switched to, and can prepare the associations according to the UE's location, moving direction, moving speed, and states of the SCells, etc.
  • the associations may include the correspondences between each SCell and all its neighboring SCells, where of the at least three SCells, at least two SCells are non-neighboring.
  • the "neighboring" herein means that the coverage of the SCells is overlapped.
  • part or all of the SCells, which have correspondences with one another may be non-neighboring. The method can continue to step S12.
  • the associations are transmitted to the UE, and at least a part of the at least three SCells are configured to UE.
  • the base station may send the associations to the UE, and configure, through RRC reconfiguration, at least a part of the at least three SCells to the UE.
  • the associations can be sent via an instruction alone or an RRC reconfiguration alone, or can also be sent during the process of RRC reconfiguration that is passed on to the UE from the base station.
  • the RRC reconfiguration would no longer be required.
  • the base station can prepare and send the associations and configure the SCells when the UE uses no SCells, and can also perform the above operations when the UE has used some SCells. After sending the associations to the UE, the base station can also re-prepare and again transmit the associations and configure the SCells.
  • the UE may use at least one activated SCell, and then make preparations for at least one other deactivated SCell that has a correspondence with the activated SCell, including measuring the deactivated SCell and uploading a corresponding measurement report, and not make preparations for at least one deactivated SCell that has no correspondence with the activated SCell.
  • the UE may only perform the deactivated-SCell-measurement for the deactivated SCells that have correspondence with the activated SCell. For example, referring also to Table 1, when the UE uses the activated SCell 1, it will search in the row of the SCell 1 and thus find that the indices (i.e., the correspondence IDs) corresponding to the columns of SCell 2 and SCell 3 are both "1" , while the indices corresponding to other columns are "0" . In this case, the UE can switch from SCell 1 only to the SCells 2 and 3, and cannot switch to the SCells 4 and 5, thus the UE only needs to measure the SCells 2 and 3. Similarly, the cases where another SCell is activated can also be obtained.
  • the indices i.e., the correspondence IDs
  • the UE simultaneously uses at least two activated SCells then it needs to make preparations for the other deactivated SCells that have correspondences with each of the at least two SCells, including measuring all the deactivated SCells that have correspondences with each of the at least two SCells and uploading a measurement report in which all the measurement results are included.
  • the UE can switch directly between the configured SCells without RRC reconfigurations, which can reduce the impact on the signal quality due to frequent RRC reconfigurations and can also reduce the possible redundant uplink data. Furthermore, the UE only needs to measure at least one other deactivated SCell that has a correspondence with the currently activated SCell, and thus needs not measure all the deactivated SCells, which can reduce the burden on the UE and the uplink data. When the UE needs to switch quickly among a large number of SCells, advantages can be achieved. In addition, the UE can directly acquire from the associations the other deactivated SCells that have correspondences with the currently activated SCell, and needs not use complex algorithms for detection, .
  • the second embodiment of the SCell configuration method is based on the first embodiment of the SCell configuration method, and further includes the following steps after the step S12.
  • a measurement report is received from the UE.
  • the UE may periodically measure the SCells according to the associations, and generate and upload, according to the preset measurement reporting types, a measurement report to the base station via the PCell.
  • the measurement reporting types may include periodical reporting, event reporting and event-triggered periodical reporting. The method can proceed to step S14.
  • step S14 when the UE needs to switch to the SCell indicated in the measurement report, an activation/deactivation command will be sent to the UE.
  • the base station can determine whether the UE needs to switch to another SCell, specifically, to which SCell, according to the location of the UE, the measurement report and the SCell states such as, for example, when the UE moves from the coverage of one SCell to the coverage of another SCell, when the signal quality of the SCell, currently activated for the UE, drops, or when there is a heavy burden on the SCell currently activated for the UE.
  • an activation/deactivation command will be sent to the UE.
  • the activation/deactivation command is used to deactivate the activated SCells and activate the SCell indicated in the measurement report.
  • the base station only needs to send the activation/deactivation command, in which case the RRC reconfiguration will no longer be required.
  • the activation/deactivation command can be implemented through L2 signaling.
  • L2 signaling supports the activation and deactivation of a maximum of 8 SCells.
  • the L2 signaling supports the activation and deactivation of a maximum of 32 SCells.
  • the L2 signaling can be further extended, or other signaling which can handle more SCells can be used, or the L2 signaling can be combined with other signaling, for example, the SCells can be divided into different groups, and the combined L1/L2 signaling will be used as activation/deactivation command, where the L1 signaling represents 2 bits of PQI (PDSCH RE mapping and Quasi collocated Indication) in the downlink control information (DCI) format 2D and signals the index of an SCell within a group, and the L2 signaling signals the group index, in which case the number of the SCells that can be handled can be enlarged to be four times the number in the prior art.
  • the L1 signaling can signal the group index and the L2 signaling can signal the index of an SCell within a group. The more bits of the L1 signaling, the more SCells that can be handled.
  • a first embodiment of a communication method according to the disclosure includes the following steps.
  • a first step S21 the UE receives the associations between at least three SCells, and executes the command of configuring at least a part of the at least three SCells to the UE.
  • the associations between the at least three SCells are transmitted from a base station, and may include the correspondences of the UE being capable of switching from each SCell to at least one other SCell. Of the at least three SCells, at least two SCells cannot switch directly between each other.
  • An SCell and a PCell may correspond to a same base station, and may be co-located or non co-located. If base stations have fast enough backhaul between each other and allow to be controlled by each other, an SCell and a PCell can also correspond to different base stations.
  • the associations can be demonstrated as a table, or by other data formats. See the above Table 1 and its corresponding descriptions for specific details.
  • the base station may configure, through RRC reconfiguration, at least a part of the at least three SCells to the UE.
  • the reception of the associations can be independent from the RRC reconfiguration, or the associations can be received during the process of the RRC reconfiguration.
  • the UE may execute a command of configuring at least a part of the at least three SCells to the UE. Thus, when the UE needs to switch between the configured SCells, the RRC reconfiguration would no longer be required.
  • the method can proceed to step S22.
  • step S22 the at least one SCell configured to the UE is activated, and at least one other SCell, which has a correspondence with the activated SCell, is measured, and at least one deactivated SCell, which has no correspondence with the activated SCell, is not measured.
  • the UE may receive an activation/deactivation command transmitted from the base station to activate the at least one SCell configured to the UE, or may autonomously activate the SCell. According to an embodiment of the communication method of the disclosure, the UE may only perform the deactivated-SCell-measurement for the deactivated SCells that have correspondence with the activated SCell. If the UE simultaneously uses at least two activated SCells, then it needs to measure the other SCells that have correspondences with each of the at least two SCells.
  • the UE can switch directly between the configured SCells without RRC reconfigurations, which can reduce the impact on the signal quality due to frequent RRC reconfigurations and can also reduce the possible redundant uplink data. Furthermore, the UE only needs to measure at least one other deactivated SCell that has a correspondence with the currently activated SCell, and thus needs not measure all the deactivated SCells, which can reduce the burden on the UE and the uplink data. When the UE needs to switch quickly among a large number of SCells, advantages can be achieved.
  • the UE can directly acquire from the associations the deactivated SCells’ PCI to which the UE can switch to, according to the currently activated SCell, and detect SCells with less number of PCI, and needs not use the complex algorithms for detection, which can reduce the SCell detection complexity.
  • the associations may include the correspondences between each SCell and all its neighboring SCells, where of the at least three SCells, at least two SCells are non-neighboring.
  • the "neighboring" herein means that the coverage of different SCells is overlapped.
  • the UE can search for the neighboring SCells according to the associations in a simple manner, and thus needs not use the complex non-linear algorithms to detect the neighboring SCells.
  • This embodiment can be combined with any embodiment of the communication method according to the disclosure.
  • part or all of the SCells, which have correspondences with one another may be non-neighboring.
  • the second embodiment of the communication method is based on the first embodiment of the communication method, and further includes the following steps.
  • a measurement report is uploaded.
  • the UE may periodically measure the SCells according to the associations, and generate and upload, according to the preset measurement reporting types, a measurement report to the base station via the PCell.
  • the measurement reporting types may include periodical reporting, event reporting and event-triggered periodical reporting. The method can proceed to step S24.
  • step S24 an activation/deactivation command is received.
  • the activation/deactivation command is generated when the base station determines that the UE needs to switch to the SCell indicated in the measurement report.
  • the method can proceed to step S25.
  • step S25 the activated SCell is deactivated and the SCell indicated in the measurement report is activated to respond to the activation/deactivation command.
  • the UE may again search for and measure the switchable deactivated SCells displayed in the associations, based on the currently activated SCell.
  • a first embodiment of a base station includes a preparation module 101 and a transmission module 102.
  • the preparation module 101 is configured to prepare the associations between at least three SCells for a UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell.
  • the transmission module 102 is configured to send the associations to the UE to configure at least a part of the at least three SCells to the UE, which thus uses at least one activated SCell, measures at least one other deactivated SCell that has a correspondence with the activated SCell, and does not measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • the various modules of the base station according to the current embodiment are used to execute the steps of the first embodiment of the SCell configuration method, as shown in FIG. 1. See the embodiment shown in FIG. 1 and the corresponding descriptions for details.
  • the UE can switch directly between the configured SCells without RRC reconfigurations, which can reduce the impact on the signal quality due to frequent RRC reconfigurations and can also reduce the possible redundant uplink data. Furthermore, the UE only needs to measure at least one other deactivated SCell that has a correspondence with the currently activated SCell, and thus needs not measure all the deactivated SCells, which can reduce the burden on the UE and the uplink data. When the UE needs to switch quickly among a large number of SCells, advantages can be achieved. In addition, the UE can directly acquire from the associations the other deactivated SCells to which the UE can switch to, according to the currently activated SCell, and thus needs not use the complex detection algorithms.
  • the associations may include the correspondences between each SCell and all its neighboring SCells, where of the at least three SCells, at least two SCells are non-neighboring.
  • the "neighboring" herein means that the coverage of different SCells is overlapped.
  • the UE can search for the neighboring SCells according to the associations in a simple manner, and thus needs not use the complex non-linear algorithms to detect the neighboring SCells.
  • This embodiment can be combined with any embodiment of the base station according to the disclosure. In other embodiments of the base station, part or all of the SCells, which have correspondences with one another, may be non-neighboring.
  • the second embodiment of the base station is based on the first embodiment of the base station, and further includes a reception module 103 and a control module 104.
  • the reception module 103 is configured to receive a measurement report from a UE.
  • the control module may send an activation/deactivation command to the UE when the UE needs to switch to the SCell indicated in the measurement report.
  • the activation/deactivation command is used to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the various modules of the base station according to the current embodiment are used to execute the steps of the second embodiment of the SCell configuration method according to the disclosure, as shown in FIG. 2. See the embodiment shown in FIG. 2 and the corresponding descriptions for details.
  • a third embodiment of a base station includes a processor 110, a transmitter 120 and a receiver 130.
  • the processor 110 is connected respectively to the transmitter 120 and the receiver 130, via the bus.
  • the transmitter 120 is configured to transmit data
  • the receiver 130 is configured to receive data.
  • the transmitter 120 and the receiver 130 are the interfaces through which the base station communicates with other communication equipments.
  • the processor 110 controls operations of the base station.
  • the processor 110 can also be referred to as a central processing unit (CPU) .
  • the processor 110 may be an integrated circuit chip with signal processing capabilities.
  • the processor 110 may also be a general purpose processor, a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a field programmable gate array (FPGA) , or other programmable logic devices, discrete gates, transistor logic devices or discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor can be a microprocessor or any conventional processor.
  • the base station may further include a memory storage (not shown) used to store the commands and data necessary for the operations of the processor 110.
  • the memory storage can also store the data received by the receiver 130.
  • the processor 110 may prepare the associations between at least three SCells for a UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, and transmit, via the transmitter 120, the associations to the UE to configure at least a part of the at least three SCells to the UE, which thus uses at least one activated SCell, measures at least one other deactivated SCell that has a correspondence with the activated SCell, and does not measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • the processor 110 may further receive, via the receiver 130, a measurement report from the UE, and transmit, via the transmitter 120, an activation/deactivation command to the UE when the UE needs to switch to the SCell indicated in the measurement report, where the activation/deactivation command is used to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • a first embodiment of a UE according to the disclosure includes a configuration module 201 and a measurement module 202.
  • the configuration module 201 is configured to receive the associations between at least three SCells that are transmitted from a base station, and execute a command of configuring at least a part of the at least three SCells to the UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell.
  • the measurement module 202 is configured to activate at least one SCell that has been configured to the UE, and measure at least one other deactivated SCell that has a correspondence with the activated SCell, and not to measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • the various modules of the UE according to the current embodiment are used to execute the steps of the first embodiment of the communication method according to the disclosure, as shown in FIG. 3. See the embodiment shown in FIG. 3 and the corresponding descriptions for details.
  • the UE can switch directly between the configured SCells without RRC reconfigurations, which can reduce the impact on the signal quality due to frequent RRC reconfigurations and can also reduce the possible redundant uplink data. Furthermore, the UE only needs to measure at least one other deactivated SCell that has a correspondence with the currently activated SCell, and thus needs not measure all the deactivated SCells, which can reduce the burden on the UE and the uplink data. When the UE needs to switch quickly among large number of SCells, advantages can be achieved. In addition, the UE can directly acquire from the associations the other deactivated SCells to which the UE can switch to, according to the currently activated SCell, and thus needs not use the complex algorithms for detection
  • the measurement module may only perform the deactivated-SCell-measurement for the deactivated SCells that have correspondence with the activated SCell.
  • the associations may include the correspondences between each SCell and all its neighboring SCells, where of the at least three SCells, at least two SCells are non-neighboring.
  • the "neighboring" herein means that the coverage of different SCells is overlapped.
  • the UE can search for the neighboring SCells according to the associations in a simple manner, and thus needs not use the complex non-linear algorithms to detect the neighboring SCells.
  • This embodiment can be combined with any embodiment of the UE according to the disclosure.
  • part or all of the SCells, which have correspondences with one another may be non-neighboring.
  • the second embodiment of the UE is based on the first embodiment of the UE, and further includes an upload module 203, a reception module 204 and a response module 205.
  • the upload module 203 is configured to upload a measurement report.
  • the reception module 204 is configured to receive an activation/deactivation command, which is generated when the UE needs to switch to the SCell indicated in the measurement report.
  • the response module 205 is configured to respond to the activation/deactivation command to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the various modules of the UE according to the current embodiment are used to execute the steps of the second embodiment of the communication method according to the disclosure, as shown in FIG. 4. See the embodiment shown in FIG. 4 and the corresponding descriptions for details.
  • a third embodiment of a UE includes a processor 210, a transmitter 220 and a receiver 230.
  • the processor 210 is connected respectively to the transmitter 220 and the receiver 230, via the bus.
  • the transmitter 220 is configured to transmit data
  • the receiver 230 is configured to receive data.
  • the transmitter 220 and the receiver 230 are the interfaces through which the UE communicates with other communication equipments.
  • the processor 210 controls the operations of the UE.
  • the processor 210 can also be referred to as a central processing unit (CPU) .
  • the processor 210 may be an integrated circuit chip with signal processing capabilities.
  • the processor 210 may also be a general purpose processor, a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a field programmable gate array (FPGA) , or other programmable logic devices, discrete gates, transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general purpose processor can be a microprocessor or any conventional processor.
  • the UE may further include a memory storage (not shown) used to store the commands and data necessary for operations of the processor 210.
  • the memory storage can also store the data received by the receiver 230.
  • the processor 210 may receive, via the receiver 230, the associations between at least three SCells, execute a command of configuring at least a part of the at least three SCells to the UE, where the associations include the correspondences of the UE being capable of switching from each SCell to at least one other SCell, and activate at least one SCell that has been configured to the UE, and measure at least one other deactivated SCell that has a correspondence with the activated SCell, and not to measure at least one deactivated SCell that has no correspondence with the activated SCell.
  • the processor 210 may further
  • the processor 210 may further upload, via the transmitter 220, a measurement report, receive, via the receiver 230, an activation/deactivation command, which is generated when the UE needs to switch to the SCell indicated in the measurement report, and respond to the activation/deactivation command to deactivate the activated SCell and activate the SCell indicated in the measurement report.
  • the disclosed base stations, UEs and methods can also be implemented by other ways. Rather, the base station embodiments and UE embodiments described are merely illustrative, for example, the division of modules or units is only a division based on logic functions, thus in actual implementations there may be other division manners, for example, multiple units or components may be combined or integrated onto another system, or some features may be ignored or not executed.
  • the displayed or discussed mutual couplings, direct couplings or communication connections may be achieved through some interfaces, devices or units, and may be achieved electrically, mechanically or in other forms.
  • the separated units as described may or may not be physically separated.
  • Components displayed as units may or may not be physical units, and may reside at one location or may be distributed to multiple networked units. Part or all of the units may be selected, according to actual requirements, to achieve the objectives of the solutions of the embodiments.
  • various functional units in embodiments of the disclosure may be integrated into one processing unit, and may be present as various physically separated units, and two or more units may be integrated into one unit.
  • the integrated units may be implemented by hardware, and may also be implemented as software functional units.
  • the integrated units are implemented as software functional units and sold or used as standalone products, they can be stored in a computer readable storage medium.
  • the computer software products can be stored in a storage medium and can include multiple instructions enabling a computing device (for example, a personal computer, a server, a network device, etc. ) or a processor to execute all or part of the steps of the methods as described in various embodiments of the disclosure.
  • the storage medium may include all kinds of medium that can store program codes such as, for example, a USB flash disk, a mobile hard drive, a read-only memory (ROM) , a random access memory (RAM) , a magnetic disk or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de configuration de cellules secondaires. Le procédé comprend les étapes suivantes: la préparation des associations entre au moins trois cellules secondaires (Scells) pour un équipement utilisateur (UE), les associations comprenant les correspondances de l'équipement utilisateur pouvant commuter depuis chaque cellule secondaire vers au moins une autre cellule secondaire, et la transmission des associations à l'équipement UE pour configurer au moins une partie desdites au moins trois cellules secondaires vers l'équipement UE, qui utilise donc au moins une cellule secondaire activée, mesure au moins une autre cellule secondaire désactivée qui a une correspondance avec la cellule secondaire activée, et ne mesure pas au moins une autre cellule secondaire désactivée qui n'a aucune correspondance avec la cellule secondaire activée. L'invention concerne également un procédé de communication, une station de base et un équipement utilisateur.
PCT/CN2016/078782 2016-04-08 2016-04-08 Procédé de configuration de cellules secondaires, station de base et équipement utilisateur WO2017173647A1 (fr)

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