WO2011120445A1 - 一种多载波系统的连接重建方法和设备 - Google Patents
一种多载波系统的连接重建方法和设备 Download PDFInfo
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- WO2011120445A1 WO2011120445A1 PCT/CN2011/072384 CN2011072384W WO2011120445A1 WO 2011120445 A1 WO2011120445 A1 WO 2011120445A1 CN 2011072384 W CN2011072384 W CN 2011072384W WO 2011120445 A1 WO2011120445 A1 WO 2011120445A1
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- configuration
- carrier
- side device
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- connection reestablishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a connection re-establishment method and apparatus for a multi-carrier system. Background technique
- LTE Long Term Evolution
- 3G 3rd Generation
- OFDM Orthogonal Frequency Division Multiplexing
- MIMO Multiple Input Multiple Output
- Output a standard for the evolution of the LTE wireless network.
- the LTE system and the previous wireless communication system there is only one carrier in one cell.
- the maximum bandwidth in the LTE system is 20 MHz.
- the UE User Equipment
- Working on one carrier, and one LTE cell has only one carrier, and each LTE cell is identified by a unique number in the network.
- LTE-A LTE-Advanced, Advanced LTE
- the peak rate of the system is much higher than that of LTE. If only one carrier with a maximum bandwidth of 20 MHz is used, it is obviously impossible to meet the peak rate requirement.
- CA Carrier aggregation
- eNB or base station
- UE User Equipment
- Service to provide the rate required by the UE.
- the carriers that are aggregated together are called CCs (Component Carriers).
- CCs Component Carriers
- Each cell can be a member carrier.
- Cells (member carriers) under different eNBs cannot be aggregated.
- each carrier is required to be no more than 20 MHz at the time of carrier aggregation.
- FIG. 2 it is a schematic diagram of carrier aggregation technology under LTE-A, LTE-A.
- the base station can perform data transmission with the UE on 4 carriers at the same time to improve system throughput.
- the UE when the UE fails to perform handover, the RLF (Radio Link Failure), the RRC (Radio Resource Control) connection reconfiguration fails, or When the integrity check fails, the UE is triggered to perform the RRC connection reestablishment process.
- the RLF Radio Link Failure
- the RRC Radio Resource Control
- the invention provides a connection reconstruction method and device for a multi-carrier system to implement a connection reconstruction process under a multi-carrier system.
- an embodiment of the present invention provides a connection re-establishment method for a multi-carrier system, including:
- the network side device Receiving, by the UE, a connection reestablishment request message sent by the UE to the network side device in the selected cell;
- the network side device performs radio resource configuration on the multi-carrier of the UE according to the connection reestablishment request message.
- the embodiment of the invention provides a network side device, including:
- a receiving module configured to: when the UE triggers the connection re-establishment process in the multi-carrier state, receive a connection re-establishment request cancellation configuration module sent by the UE to the network side device in the selected cell, according to the receiving, by the receiving module
- the connection reestablishment request message performs radio resource configuration on multiple carriers of the UE.
- a method for connection reconstruction of a multi-carrier system includes:
- connection re-establishment request message is sent to the network-side device in the selected cell; and the multi-carrier of the UE is used by the network-side device according to the connection re-establishment request message. Perform wireless resource configuration.
- An embodiment of the present invention provides a user equipment UE, including:
- a determining module configured to determine whether the UE triggers a connection re-establishment process in a multi-carrier state
- a sending module configured to: when the determining result of the determining module is that the UE triggers a connection re-establishment process in a multi-carrier state, in the selected cell Sending a connection reestablishment request message to the network side device; performing, by the network side device, radio resource configuration on the multiple carriers of the UE according to the connection reestablishment request message.
- the embodiment of the present invention provides a connection re-establishment method for a multi-carrier system, including: if a UE triggers a connection re-establishment process in a multi-carrier state, the network-side device receives a connection from the UE to the network side device in the selected cell. Reconstructing the request to cancel the single carrier of the UE according to the connection reestablishment request message by the network side device Perform wireless resource configuration.
- the embodiment of the invention provides a network side device, including:
- a receiving module configured to: when the UE triggers the connection re-establishment process in the multi-carrier state, receive a connection re-establishment request cancellation configuration module sent by the UE to the network side device in the selected cell, according to the receiving, by the receiving module
- the connection reestablishment request message performs radio resource configuration on a single carrier of the UE.
- a method for connection reconstruction of a multi-carrier system includes:
- the UE If the UE triggers the connection re-establishment process in the multi-carrier state, the UE sends a connection re-establishment request message to the network-side device in the selected cell, and the network-side device according to the connection re-establishment request message to the UE Single carrier for radio resource configuration.
- An embodiment of the present invention provides a user equipment UE, including:
- a determining module configured to determine whether the UE triggers a connection re-establishment process in a multi-carrier state
- a sending module configured to: when the determining result of the determining module is that the UE triggers a connection re-establishment process in a multi-carrier state, in the selected cell Sending a connection reestablishment request message to the network side device; performing, by the network side device, radio resource configuration on a single carrier of the UE according to the connection reestablishment request message.
- the present invention has at least the following advantages:
- the UE that has RRC connection reestablishment in the multi-carrier working state can return to the multi-carrier state as soon as possible, and saves the signaling overhead of the air interface and the state transition delay, and avoids the problem of PCC confusion.
- FIG. 1 is a schematic diagram of only one carrier in a cell in a LTE system in the prior art
- FIG. 2 is a schematic diagram of a carrier aggregation technology in the prior art LTE-A
- FIG. 3 is a connection reconstruction method for a multi-carrier system according to Embodiment 1 of the present invention. Schematic diagram of the process;
- FIG. 4 is a schematic flowchart of a connection reconstruction method for a multi-carrier system according to Embodiment 2 of the present invention.
- FIG. 5 is a schematic diagram of an application scenario used in an embodiment of the present invention.
- FIG. 6 is a schematic flowchart of a connection reconstruction method for a multi-carrier system according to Embodiment 3 of the present invention.
- FIG. 7 is a schematic flowchart of a connection reconstruction method for a multi-carrier system according to Embodiment 4 of the present invention.
- FIG. 8 is a schematic structural diagram of a network side device according to Embodiment 5 of the present invention
- FIG. 9 is a schematic structural diagram of a user equipment according to Embodiment 6 of the present invention
- FIG. 10 is a network side device according to Embodiment 7 of the present invention
- FIG. 11 is a schematic structural diagram of a user equipment according to Embodiment 8 of the present invention.
- the LTE system is a single-carrier system.
- the UE fails to perform handover, the RLF, the RRC connection reconfiguration fails, or the integrity check fails, the UE is triggered to perform the RRC connection reestablishment process.
- the purpose of the RRC connection re-establishment process is to restore SRB1 (Signaling Radio Bearer 1) and to restore security.
- the RRC connection re-establishment process includes the following steps:
- the UE suspends all RBs (Radio bearers) except SRB0.
- the UE resets the MAC (Media Access Control) layer and uses the default configuration to perform the cell selection process.
- the default configuration includes default
- the RRC connection reestablishment request message is sent to the base station in the selected cell.
- the RRC connection reestablishment request message includes the identifier information of the UE.
- the base station receives the RRC connection reestablishment request message of the UE, and if the UE is allowed to re-establish (that is, the base station side has the context information of the UE), the RRC connection reestablishment message is sent to the UE. If the configuration information of the radio resource is carried in the RRC connection reestablishment message, the incremental configuration is adopted.
- the basis of the incremental configuration is the default configuration. After the UE receives the RRC connection reestablishment message, the UE will inherit the previously saved value for the configuration information that does not appear in the RRC connection reestablishment message. Configuration information, the UE will use the new value.
- the UE receives the RRC connection reestablishment message, restores SRB1, SRB2 and all DRBs are still suspended, and updates the key according to the security information in the RRC connection reestablishment message.
- the UE configures the lower layer according to the configuration information, and when the configuration is completed, the UE sends the base station to the base station.
- the RRC Connection Reestablishment Complete message is sent, and the RRC connection reestablishment process is considered complete.
- the lower layer includes a PDCP (Packet Data Converge Protocol), an RLC (Radio Link Control Protocol), a MAC, and a physical layer.
- the base station receives the RRC connection reestablishment complete message, and considers that the RRC connection reestablishment process is completed. In order to recover SRB2 and DRB, the base station needs to send an RRC connection reconfiguration message to the UE to recover SRB2 and DRB after receiving the RRC connection reestablishment complete message.
- the primary component carrier (PCC) and the secondary component carrier (SCC) are introduced in the CA technology.
- the UE has only one primary carrier (divided into uplink and downlink), and the other carriers are secondary carriers.
- the characteristics of the primary carrier include: 1) the uplink primary carrier is used to transmit physical layer uplink control information, and the physical layer uplink control information includes ACK (acknowledgement character)/NACK (denial character), CQK Channel Quality Indicator, channel quality indicator), and D -SR and other information. 2)
- the downlink primary carrier cannot be deactivated.
- the UE When the radio link fails on the downlink primary carrier, the UE triggers the RRC connection reestablishment process; when the secondary carrier fails to generate a radio link, the RRC connection reestablishment process is not triggered. 4)
- the system information acquisition and update of the downlink primary carrier is similar to the LTE process.
- NAS Non Access Stratum
- the carrier that the UE initially establishes is the PCC, and the other subsequent configurations and activated carriers are both scc. Only the downlink secondary carrier can be activated and deactivated, and the uplink carrier default configuration is activated. Since the primary carrier is bound with many features (for example, only the uplink primary carrier transmits the physical layer uplink control information), the UE must have a primary carrier in the CA working state.
- the base station in order to enable the UE to enter the CA working state, the base station sends configuration information of multiple carriers (both SCCs) to the UE through RRC signaling (such as an RRC connection reconfiguration message), and the UE receives the configuration information. After that, the status of these carriers is deactivated by default and does not work. In the subsequent process, the base station activates some configured SCCs through MAC signaling, and once the SCC is activated, normal data transmission and reception can be performed.
- RRC signaling such as an RRC connection reconfiguration message
- the downlink carrier can be activated and deactivated, and the uplink carrier is activated as long as it is configured. Therefore, the normal transmission and reception of data after the downlink carrier is activated means that the PDCCH (Physical Downlink Control Channel) and the Physical Downlink Shared Channel (PDSCH) can be monitored and decoded.
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- a first embodiment of the present invention provides a method for reestablishing a connection of a multi-carrier system. As shown in FIG. 3, the method includes the following steps:
- Step 301 If the user equipment UE triggers the connection re-establishment process in the multi-carrier state, the UE sends a connection re-establishment request message to the network side device in the selected cell.
- the step includes: the UE sending a connection reestablishment request message to the network side device by using the default configuration in the selected cell.
- Step 302 The network side device performs radio resource configuration on multiple carriers of the UE according to the connection reestablishment request message. In this step, the network side device performs radio resource configuration on the multi-carrier of the UE in an incremental configuration manner in the connection re-establishment message, and sends the connection re-establishment message to the UE.
- the step further includes: if the selected cell is located in the carrier configuration set of the UE, and the UE saves configuration information of other component carriers CC in the multi-carrier state,
- the network side device performs radio resource configuration on multiple carriers of the UE in an incremental configuration manner based on the original configuration information.
- the network-side device is based on the default configuration information. Radio resources are configured for multiple carriers of the UE in an incremental configuration manner.
- the network-side device re-assigns the PCC and the secondary carrier SCC, and uses the incremental configuration manner to the multi-carrier of the UE based on the original configuration information or the default configuration information.
- the network-side device performs radio resource configuration on the multi-carriers of the UE in an incremental configuration manner based on the original configuration information or the default configuration information. If the PCC before and after the UE is different, the network side device needs to release the physical layer uplink control channel configuration information of the source PCC, and configure the physical layer uplink control channel configuration information for the new PCC.
- the UE sends a connection reestablishment request message to the network side device in the selected cell, including: if the selected cell is not located in the carrier configuration set of the UE, the UE releases all configurations, and Returning to the single-carrier working state, sending a connection re-establishment request message to the network-side device; or, the UE retains the multi-carrier configuration information, and sends a connection re-establishment request message to the network-side device by using the default configuration in the selected cell;
- the multi-carrier configuration information is original configuration information or default configuration information.
- the network side device performs the radio resource configuration on the multi-carrier of the UE in the manner of the incremental configuration in the connection re-establishment message, including: if the selected cell is not located in the carrier configuration set of the UE, the network-side device Redistributing the set of carriers of the UE, re-designating the PCC and the secondary carrier SCC, and performing radio resource configuration on the multiple carriers of the UE in an incremental configuration manner based on the original configuration information or the default configuration information.
- the sending, by the UE, the connection reestablishment request message to the network side device in the selected cell includes: if the UE adopts a fast reestablishment process, the UE selects a reestablished cell within the carrier configuration set, if there is no suitable one in the carrier configuration set The cell selects a reestablished cell in addition to the set of carrier configurations, and sends a connection reestablishment request message to the network side device in the selected reestablished cell.
- the connection reestablishment request message includes: an RRC connection reestablishment request message; the connection reestablishment message includes: an RRC connection reestablishment message; the default configuration includes a MAC configuration, an SPS configuration, and a physical layer configuration; It includes one or more of the following: carrier number, PUCCH configuration, PDSCH configuration, PUSCH configuration, power control configuration, .
- the method further includes: The multi-carrier of the UE performs reconfiguration of the lower layer by performing radio resource configuration information, and then sends an RRC connection reestablishment complete message to the network side device by using the new configuration.
- the low layer includes at least a physical layer, and may further include a PDCP layer, an RLC layer, and a MAC layer.
- the UE that performs RRC connection reestablishment in the multi-carrier working state can return to the multi-carrier state as soon as possible, and save the signaling overhead of the air interface and the state transition delay, and avoid The problem of PCC confusion.
- the second embodiment of the present invention provides a connection re-establishment method for a multi-carrier system. As shown in FIG. 4, the method includes the following steps:
- Step 401 If the UE triggers the connection re-establishment process in the multi-carrier state, the UE sends a connection re-establishment request message to the network-side device in the selected cell.
- the network side device includes, but is not limited to, an E-UTRAN, an RNC (Radio Network Controller), an NB (Node B, Node B), an eNB, a Relay, a base station, etc., and the network side device is not limited to the above device. All devices that can send an RRC connection reconfiguration message to the UE on the network side are all within the protection scope of the present invention.
- connection reestablishment request message includes, but is not limited to, an RRC connection reestablishment request message.
- the connection reestablishment request message may be arbitrarily selected according to actual needs.
- an RRC connection reestablishment request message is taken as an example for description.
- the UE when the selected cell sends a connection reestablishment request message to the network side device, the UE sends a connection reestablishment request message to the network side device in the selected cell using the default configuration.
- the default configuration includes at least a medium access control MAC configuration, a semi-persistent scheduling SPS configuration, and a physical layer configuration.
- the information includes at least one physical layer multi-carrier configuration, and the physical layer multi-carrier configuration includes at least one or any combination of the following information: carrier number, PUCCH (Physical Uplink Control Channel) configuration, PDSCH configuration, PUSCH ( Physical Uplink Shared Channel, physical uplink shared channel configuration, power control configuration, CQI reporting configuration, SRS (Sounding Reference Signal) configuration, SR configuration, antenna configuration, etc.
- PUCCH Physical Uplink Control Channel
- PDSCH configuration Physical Uplink Shared Channel
- PUSCH Physical Uplink Shared Channel
- physical uplink shared channel configuration power control configuration
- CQI reporting configuration CQI reporting configuration
- SRS Sounding Reference Signal
- Step 402 The network side device performs radio resource configuration on the multicarrier of the UE according to the connection reestablishment request message. In this step, the network side device needs to perform radio resource configuration on the multi-carrier of the UE in an incremental configuration manner in the connection reestablishment message.
- the connection reestablishment message is a corresponding connection reestablishment request message. For example, when the connection reestablishment request message is an RRC connection reestablishment request message, the connection reestablishment message is an RRC connection reestablishment message.
- the network side device when receiving the RRC connection reestablishment request message from the UE, the network side device needs to perform an RRC connection reestablishment process of the UE, and send an RRC connection reestablishment message to the UE, where the RRC connection reestablishment message needs to carry the
- the multi-carrier of the UE performs information on radio resource configuration.
- the network side device needs to be based on the original configuration information. Radio resources are configured for multiple carriers of the UE in an incremental configuration manner.
- the network-side device needs to be based on the missing The province configuration information is configured in an incremental manner to configure radio resources for multiple carriers of the UE. It should be noted that, in the foregoing first case and the second case, if the PCC before and after the UE is re-established, the network-side device needs to re-specify the PCC and the SCC, and adopt an increment based on the original configuration information or the default configuration information.
- the configuration manner is to perform radio resource configuration on the multi-carrier of the UE.
- the process of re-designating the PCC and the SCC may be re-designated in an explicit manner or an implicit manner.
- the network side device also needs to release the physical layer uplink control channel configuration information of the source PCC, and configure the physical layer uplink control channel configuration information for the new PCC.
- the physical layer uplink control channel configuration information includes: CQI, D-SR, and ACK/NACK information.
- the network-side device performs radio resource configuration on the multi-carrier of the UE in an incremental configuration manner based on the original configuration information or the default configuration information.
- the UE needs to release all configuration information, and roll back to the single carrier working state to send a connection reestablishment request message to the network side device. Or, the UE sends a connection reestablishment request message to the network side device by using the default configuration in the selected cell.
- the network side device needs to re-allocate the carrier set of the UE, re-designate the PCC and the SCC, and perform radio resource configuration on the multi-carrier of the UE in an incremental configuration manner based on the original configuration information or the default configuration information.
- the process of reassigning PCC and SCC can be reassigned explicitly or implicitly.
- the UE needs to select the re-established cell within the carrier configuration set. If there is no suitable cell within the carrier configuration set, the re-established cell is selected outside the carrier configuration set. And sending a connection reestablishment request message to the network side device in the selected reestablished cell.
- Step 403 The network side device sends an RRC connection reestablishment message to the UE.
- the RRC The connection reestablishment message carries information for configuring radio resources for multiple carriers of the UE.
- the lower layer includes at least a physical layer, and may further include a PDCP layer,
- connection reconstruction method of the multi-carrier system provided by the embodiments of the present invention is described below in combination with several specific application scenarios.
- the UE when the multi-carrier configuration is saved for the UE, and the PCC is not changed before and after the UE is re-established, as shown in FIG. 5, there are three cells under the base station 1, which are respectively the cell on the frequency fl1 and the cell on the frequency f2. 2, and cell 3 on the frequency f3, the UE currently works in a carrier aggregation state, and aggregates the cell 1, the cell 2, and the cell 3.
- the cell 1 is a PCC
- the cell 2 and the cell 3 are SCCs.
- the UE When the UE initiates an RRC connection reestablishment process in the carrier aggregation state (ie, the multi-carrier state), the UE suspends all the RBs except the SRB0, and selects the cell 1 to send the connection reestablishment to the base station.
- Request message at this time, the UE needs to use the default MAC layer configuration, the SPS configuration, and the default physical layer configuration of the cell 1 on the cell 1, and send an RRC connection reestablishment request message to the base station, and save other CCs (cells). 2 and cell 3) Physical layer configuration in the CA state.
- the base station After receiving the RRC connection reestablishment request message, the base station sends an RRC connection reestablishment message to the UE, if the UE is determined to accept the re-establishment process of the UE, where the RRC connection reestablishment message carries multi-carrier radio resource configuration information, and the multi-carrier
- the radio resource configuration information is configured in an incremental configuration.
- the radio resource configuration information of the multi-carrier includes: indicating that the cell 1 is still a PCC, and adopting a PCC-based incremental configuration for the cell 1, indicating that the SCC-based incremental configuration (mainly physical layer configuration) is adopted for other cells.
- the above indication information may be indicated in an explicit manner, or The indication is in an implicit manner, where the implicit manner may be that the cell 1 is configured according to the PCC, that is, the uplink physical control channel configuration information exists, and the UE defaults to the CC as the PCC.
- the UE performs low-level configuration according to the information in the RRC connection reestablishment message, restores the SRB1 after the configuration is complete, and sends an RRC connection reestablishment complete message to the base station.
- the UE recovers SRB1 on multiple carriers, only PCC (cell 1) is in an active state, and other SCCs are still in a deactivated state.
- the base station needs to send an RRC connection reconfiguration message to the UE, and the RRC connection reconfiguration message may not carry the configuration information of the multi-carrier (for example, the physical layer configuration), that is, the SRB2 and the DRB may be restored.
- the RRC connection reconfiguration message may not carry the configuration information of the multi-carrier (for example, the physical layer configuration), that is, the SRB2 and the DRB may be restored.
- the base station After the RRC connection reconfiguration is completed, the base station needs to activate the SCC (for example, cell 2, cell 3) in which the UE saves the configuration information by using MAC signaling, so that the UE re-enters the transmission state to the CA. If SRB1 is restored, the other SCCs are activated by default, and then MAC signaling is not required to activate the SCC.
- the reconfiguration process only needs to recover SRB2 and DRB, unless the RRC connection reconfiguration message is used for the lower layer configuration of the SCC.
- the modification (mainly the physical layer configuration) requires subsequent MAC signaling to reactivate the SCC.
- the foregoing physical layer configuration information includes one or more of the following: carrier number, PUCCH configuration, PDSCH configuration, PUSCH configuration, power control configuration, CQI reporting configuration, SRS configuration, SR configuration, antenna configuration, and the like.
- the UE When the UE initiates an RRC connection reestablishment process in the carrier aggregation state, the UE suspends all RBs except SRB0, and selects the cell 2 to send a connection reestablishment request message to the base station.
- the UE needs to use the default MAC layer configuration, SPS configuration, and default cell 2 physics on cell 2.
- the layer configuration sends an RRC connection reestablishment request message to the base station, and saves the physical layer configuration of other CCs (cell 1 and cell 3) in the CA state.
- the base station After receiving the RRC connection reestablishment request message, the base station sends an RRC connection reestablishment message to the UE, if the UE is determined to accept the re-establishment process of the UE, where the RRC connection reestablishment message carries multi-carrier radio resource configuration information, and the multi-carrier
- the radio resource configuration information is configured in an incremental configuration.
- the radio resource configuration information of the multi-carrier includes: indicating that the cell 2 is a PCC, the physical layer configuration information of the cell 2 is configured as a PCC, and indicating that the cell 1 is an SCC, and the physical layer configuration information of the cell 1 is configured as an SCC.
- SCC-based incremental configuration (mainly physical layer configuration) is adopted for other cells (Cell 3).
- indication information may be indicated in an explicit manner, or may be indicated in an implicit manner, where the implicit manner may be that the cell 1 is configured according to the PCC, that is, the uplink physical control channel configuration information exists. Then the UE defaults to the CC as a PCC.
- the UE performs low-level configuration according to the information in the RRC connection reestablishment message, restores the SRB1 after the configuration is complete, and sends an RRC connection reestablishment complete message to the base station.
- the UE recovers the SRB1 on the multi-carrier, and only the PCC (Cell 2) is in the active state, and the other SCCs are still in the deactivated state; the subsequent process is similar to the application scenario 1 and is not described in detail in this application scenario.
- the UE When the UE is in the carrier aggregation state, the UE initiates the RRC connection reestablishment process due to the RLF of the downlink PCC, and the UE suspends all the RBs except the SRB0. If the UE selects the cell other than the current configuration set to initiate the RRC connection reestablishment process, For example, cell 4 is selected to send a connection reestablishment request message to the base station. At this time, the UE has two processing modes: 1) The UE releases all configurations, and falls back to the single carrier working state to send a connection to the base station. The RRC reestablishment request message is received; 2) The UE sends an RRC connection reestablishment request message to the base station in the cell 4 using the default MAC layer configuration, the SPS configuration, and the default physical layer configuration of the cell 4.
- the base station After receiving the RRC connection reestablishment request message, the base station sends an RRC connection reestablishment message to the UE if the UE is determined to accept the re-establishment process of the UE, where the RRC connection reestablishment message needs to carry carrier set reconfiguration information, that is, reconfigure A set of carriers working by the UE, such as cell 1, cell 2, and cell 4 (cell 3 is removed from the configuration set).
- the RRC connection reestablishment message also needs to carry the radio resource configuration information of the multi-carrier, and the radio resource configuration information of the multi-carrier is configured in an incremental configuration manner.
- the radio resource configuration information of the multi-carrier includes: indicating that the cell 4 is a PCC, and configuring the physical layer configuration information of the cell 4 as a PCC (may be an incremental configuration based on a default configuration), indicating that the cell 1 is an SCC,
- the physical layer configuration information of the cell 1 is configured as an SCC (which may be an incremental configuration based on a default configuration, or may be an incremental configuration based on the original configuration), and an SCC-based incremental configuration is adopted for other cells (Cell 2) ( Mainly the physical layer configuration). If another cell is newly added to the configuration set, and the UE does not save its configuration information before, the SCC is considered to be incrementally configured based on the default configuration.
- the above PCC and SCC indications can be explicit or implicit.
- the UE performs low-level configuration according to the information in the RRC connection reestablishment message, restores the SRB1 after the configuration is complete, and sends an RRC connection reestablishment complete message to the base station.
- the subsequent process is similar to the application scenario 1 and will not be described in detail in this application scenario.
- the multi-carrier configuration is saved for the UE, and the fast reconstruction process is performed, and the schematic diagram shown in FIG. 5 is continued.
- the fast re-establishment process is specifically: first selecting a cell in a UE configured carrier set, and if there is no suitable cell in the configuration set, selecting a cell outside the configuration set. If the appropriate cell is selected in the configuration set, the corresponding processing needs to be performed according to the case of saving the multi-carrier configuration; if the configuration set is that the appropriate cell is selected, the multi-carrier configuration is required to be released. Corresponding processing.
- an RRC connection re-establishment process needs to be initiated. If the cell that initiates the re-establishment process is still the previous PCC, the process may be performed according to the application scenario 1.
- the difference from the application scenario 1 is that the UE receives the RRC connection reestablishment message according to its configuration. After the low layer is configured, the SRB2 and the DRB are directly restored. (At this time, the SCC may be activated or inactive, waiting for subsequent MAC signaling to be activated, as described in Application Scenario 1, and no subsequent reconfiguration process is required. Therefore, the UE can quickly resume the service, which is called fast reconstruction.
- the process is performed according to the application scenario 2, which is different from the application scenario 2 in that the UE receives the RRC connection reestablishment message and configures the lower layer according to the configuration information thereof.
- Restore SRB2 and DRB in this case, the SCC can be activated or inactive, waiting for subsequent MAC signaling to be activated, as described in Application Scenario 2), and no subsequent reconfiguration process is required. Therefore, the UE can quickly resume the service. .
- the multi-carrier default configuration is used for the UE, and the reconstruction process is completed, and the schematic diagram shown in FIG. 5 is continued.
- the feature of this application scenario is that the UE is allowed to complete reconstruction on multiple carriers.
- the specific carrier set may be the original set (for example, the application scenario 1 and the application scenario 2), or may be determined by the RRC connection reestablishment message (for example, application scenario 3), and multiple carriers use the default configuration.
- the carrier that initiates the RRC connection re-establishment process is the PCC.
- the RRC connection reestablishment message includes multi-carrier configuration information, where the cell currently initiating the re-establishment process is PCC configuration information based on the default configuration, and other cells are SCC configuration information based on the default configuration.
- the subsequent processing is the same as that of the application scenario 1 (there is a reconfiguration process to restore the SRB2 and the DRB). If the re-establishment is fast, the subsequent processing is the same as the application scenario 4 (none) Reconfiguration process, directly recover SRB2 and DRB).
- the UE that performs RRC connection reestablishment in the multi-carrier working state can return to the multi-carrier state as soon as possible by using the method provided by the embodiment of the present invention and the application scenarios, and saves the signaling overhead of the air interface and the state transition. Delay, and avoid the problem of PCC confusion.
- a third embodiment of the present invention provides a method for reestablishing a connection of a multi-carrier system. As shown in FIG. 6, the method includes the following steps:
- Step 601 If the UE triggers the connection re-establishment process in the multi-carrier state, the UE sends a connection re-establishment request message to the network-side device in the selected cell.
- the step of the present invention includes: the UE sends a connection reestablishment request message to the network side device by using the default configuration in the selected cell, and releases the configuration information of the multi-carrier to fall back to the single carrier state.
- Step 602 The network side device performs radio resource configuration on a single carrier of the UE according to the connection reestablishment request message.
- the step of the step of: the network side device performs radio resource configuration on the single carrier of the UE in an incremental configuration manner in the connection reestablishment message, and sends the connection reestablishment message to the UE.
- the connection reconstruction message The information carrying the radio resource configuration of the single carrier of the UE is carried.
- the RRC connection reestablishment is completed.
- the UE needs to recover the signaling radio bearer 1SRB1 in the single carrier, and then the base station re-establishes the UE through the RRC connection reconfiguration process. Perform CA status.
- connection reestablishment request message includes: an RRC connection reestablishment request message; the connection reestablishment message includes: an RRC connection reestablishment message; the default configuration includes a MAC configuration, an SPS configuration, and a physical layer configuration; , including one or more of the following: carrier number, PUCCH configuration, PDSCH configuration, PUSCH configuration, power control configuration, and. (51 on "3 ⁇ 4 configuration, SRS configuration, SR configuration, antenna configuration.
- the UE that performs RRC connection reestablishment in the multi-carrier working state can return to the multi-carrier state as soon as possible, and saves the signaling overhead of the air interface and the state transition delay, and avoids the PCC. Confused question.
- the fourth embodiment of the present invention provides a connection reconstruction method for a multi-carrier system, as shown in the figure.
- Step 701 If the UE triggers the connection re-establishment process in the multi-carrier state, the UE sends a connection reestablishment request message to the network side device in the selected cell.
- the connection reestablishment request message includes, but is not limited to, an RRC connection reestablishment request message.
- an RRC connection reestablishment request message is taken as an example for description.
- the UE when the selected cell sends a connection reestablishment request message to the network side device, the UE sends a connection reestablishment request message to the network side device in the selected cell using the default configuration.
- the default configuration includes at least a medium access control MAC configuration, a semi-persistent scheduling SPS configuration, and a physical layer configuration.
- the physical layer configuration includes at least one or any combination of the following information: carrier number, PUCCH configuration, PDSCH configuration, PUSCH Configuration, power control configuration, CQI reporting configuration, SRS configuration, SR configuration, antenna configuration, etc. It is to be noted that, when the UE sends a connection reestablishment request message to the network side device, the UE also needs to simultaneously release the configuration information of the multi-carrier and roll back to the single carrier state.
- Step 702 The network side device performs radio resource configuration on the single carrier of the UE according to the connection reestablishment request message. In this step, the network side device needs to perform radio resource configuration on the single carrier of the UE in an incremental configuration manner in the connection reestablishment message.
- the connection reestablishment message is a corresponding connection reestablishment request message. For example, when the connection reestablishment request message is an RRC connection reestablishment request message, the connection reestablishment message is an RRC connection reestablishment message.
- the network side device when receiving the RRC connection reestablishment request message from the UE, the network side device needs to perform an RRC connection reestablishment process of the UE, and send an RRC connection reestablishment message to the UE, where the RRC connection reestablishment message needs to be carried.
- Information about radio resource allocation for a single carrier of the UE is not limited to, but not limited to, but not limited to, the RRC connection reestablishment request message from the UE.
- Step 703 The network side device sends an RRC connection reestablishment message to the UE.
- the RRC connection reestablishment message carries information about radio resource configuration of a single carrier of the UE.
- Step 704 After the RRC connection reestablishment is completed, the UE resumes the SRB1 after the single carrier recovers; the base station re-executes the CA state by using the RRC connection reconfiguration process.
- connection reconstruction method of the multi-carrier system provided by the embodiment of the present invention is described below in conjunction with a specific application scenario.
- the UE for the UE to release the multi-carrier configuration, continue with the schematic diagram shown in FIG. 5.
- the UE initiates the RRC connection reestablishment process in the carrier aggregation state, the UE suspends all RBs except SRB0, releases the physical layer configuration of all CCs in the CA state, and falls back to the UE.
- Single carrier state default configuration is used in the selected cell (eg, cell 1) (MAC layer configuration, SPS Configuration and physical layer configuration) Send an RRC Connection Reestablishment Request message to the base station.
- the base station After receiving the RRC connection reestablishment request message, the base station sends an RRC connection reestablishment message to the UE if the UE is determined to accept the re-establishment process of the UE, where the RRC connection reestablishment message carries only the radio resource configuration information of the single carrier (ie, the UE currently The carrier that initiated the re-establishment of a cell 1) is in an incremental configuration.
- the UE performs low-level configuration according to the information in the RRC connection reestablishment message, and after completing the SRB1, sends an RRC connection reestablishment complete message to the base station.
- the UE recovers the SRB1 on the cell 1, and only stores the lower layer configuration information of the cell 1 (for example, the physical layer configuration), and the cell can be used as the PCC in the subsequent CA transmission.
- the base station sends an RRC connection reconfiguration message to the UE, where the RRC connection reconfiguration message can carry configuration information of multiple carriers (for example, physical layer configuration), so that the subsequent process Recover SRB2 and DRB on multiple carriers.
- the base station uses the MAC signaling to activate the carriers (SCC) in which the UE holds the configuration information, so that the UE re-enters the CA transmission state.
- SCC carriers
- the UE that performs RRC connection reestablishment in the multi-carrier working state can return to the multi-carrier state as soon as possible by using the method provided by the embodiment of the present invention and the application scenarios, and saves the signaling overhead of the air interface and the state transition. Delay, and avoid the problem of PCC confusion.
- a network side device includes:
- the receiving module 11 is configured to: when the UE triggers the connection re-establishment process in the multi-carrier state, receive a connection re-establishment request cancellation configuration module 12 sent by the UE to the network-side device in the selected cell, according to the receiving module 11 Received the connection reconstruction please The message is configured to perform radio resource configuration on multiple carriers of the UE.
- the configuration module 12 is specifically configured to perform radio resource configuration on multiple carriers of the UE in an incremental configuration manner in the connection reestablishment message.
- the configuration module 12 is specifically configured to: when the UE is rebuilt, the selected cell is located in a carrier configuration set of the UE, and the UE saves configuration information of other component carriers CC in a multi-carrier state.
- the radio resource configuration of the multi-carrier of the UE is performed in an incremental configuration manner based on the original configuration information.
- the configuration module 12 is specifically configured to: if the selected cell is located in the carrier configuration set of the UE when the UE is reestablished, and the UE saves default configuration information of other CCs in the multi-carrier state,
- the province configuration information is configured to perform radio resource configuration on multiple carriers of the UE in an incremental configuration manner.
- the configuration module 12 is specifically configured to: if the primary carrier PCC before and after the UE is re-established, re-designate the PCC and the SCC, and use the incremental configuration manner to the multi-carrier of the UE according to the original configuration information or the default configuration information. Performing radio resource configuration; if the PCCs before and after the UE re-establishment are the same, the radio resources are configured for multiple carriers of the UE in an incremental configuration manner based on the original configuration information or the default configuration information.
- the configuration module 12 is specifically configured to release the physical layer uplink control channel configuration information of the source PCC and configure the physical layer uplink control channel configuration information for the new PCC if the PCC before and after the UE is different.
- the configuration module 12 is specifically configured to: if the selected cell is not located in the carrier configuration set of the UE, re-allocate the carrier set of the UE, re-designate the PCC and the secondary carrier SCC, and based on the original configuration information or The default configuration information is used to perform radio resource configuration on multiple carriers of the UE in an incremental configuration manner.
- the sending module 13 is connected to the configuration module 12 and configured to send the connection reestablishment message to the UE.
- the connection reestablishment request message includes: an RRC connection reestablishment request message;
- the connection reestablishment message includes: an RRC connection reestablishment message;
- the default configuration includes a MAC configuration, an SPS configuration, and a physical layer configuration;
- the layer configuration includes one or more of the following: carrier number, PUCCH configuration, PDSCH configuration, PUSCH configuration, power control configuration, CQI reporting configuration, SRS configuration, SR configuration, antenna configuration.
- modules of the device of the present invention may be integrated or integrated.
- the above modules can be combined into one module, or can be further split into multiple sub-modules.
- a user equipment UE which is provided in the sixth embodiment of the present invention, as shown in FIG. 9, includes:
- the determining module 21 is configured to determine whether the UE triggers the connection reestablishing process in the multi-carrier state.
- the sending module 22 is configured to: when the determining result of the determining module 21 is that the UE triggers a connection re-establishment process in a multi-carrier state, sending a connection re-establishment request message to the network side device in the selected cell; Performing radio resource configuration on multiple carriers of the UE according to the connection reestablishment request message.
- the sending module 22 is specifically configured to send a connection reestablishment request message to the network side device by using the default configuration in the selected cell.
- the sending module 22 is specifically configured to: if the selected cell is not located in the carrier configuration set of the UE, revert all configurations, and roll back to the single carrier working state to send a connection reestablishment request message to the network side device; Or sending a connection reestablishment request message to the network side device by using the default configuration in the selected cell.
- the sending module 22 is specifically configured to: if the UE adopts a fast re-establishment process, select a re-established cell within the carrier configuration set, if the carrier configuration set is not within If there is a suitable cell, the reconstructed cell is selected outside the set of carrier configurations, and the connection reestablishment request message is sent to the network side device in the selected reconstructed cell.
- the storage module 23 is configured to: when the determining result of the determining module 21 is that the UE triggers a connection re-establishment process in a multi-carrier state, storing multi-carrier configuration information; where the multi-carrier configuration information is original configuration information or missing Provincial configuration information.
- the configuration module 24 is configured to reconfigure the lower layer according to the information about the radio resource configuration of the multi-carrier of the UE and the multi-carrier configuration information, and send the RRC to the network side device by using the new configuration.
- the connection rebuild complete message is configured to reconfigure the lower layer according to the information about the radio resource configuration of the multi-carrier of the UE and the multi-carrier configuration information, and send the RRC to the network side device by using the new configuration.
- the connection rebuild complete message is configured to reconfigure the lower layer according to the information about the radio resource configuration of the multi-carrier of the UE and the multi-carrier configuration information
- modules of the device of the present invention may be integrated or integrated.
- the above modules can be combined into one module, or can be further split into multiple sub-modules.
- a network side device provided in Embodiment 7 of the present invention includes:
- the receiving module 31 is configured to: when the UE triggers the connection re-establishment process in the multi-carrier state, receive a connection re-establishment request cancellation configuration module 32 sent by the UE to the network side device in the selected cell, according to the receiving module 32
- the received connection reestablishment request message performs radio resource configuration on a single carrier of the UE.
- the configuration module 32 is specifically configured to perform radio resource configuration on a single carrier of the UE in an incremental configuration manner in the connection reestablishment message.
- the sending module 33 is connected to the configuration module 32, and is configured to send the connection reestablishment message to the UE.
- the connection reestablishment request message includes: an RRC connection reestablishment request message; the connection reestablishment message includes: an RRC connection reestablishment message; the default configuration includes a MAC configuration, an SPS configuration, and a physical layer configuration; Physical layer configuration includes One or more of the following: carrier number, PUCCH configuration, PDSCH configuration, PUSCH configuration, power control configuration, CQI reporting configuration, SRS configuration, SR configuration, antenna configuration.
- modules of the device of the present invention may be integrated or integrated.
- the above modules can be combined into one module, or can be further split into multiple sub-modules.
- a user equipment UE which is provided in Embodiment 8 of the present invention, as shown in FIG. 11, includes:
- the determining module 41 is configured to determine whether the UE triggers the connection reestablishing process in the multi-carrier state.
- the sending module 42 is configured to: when the determining result of the determining module 41 is that the UE triggers a connection re-establishment process in a multi-carrier state, sending a connection reestablishment request message to the network side device in the selected cell; Performing radio resource configuration on a single carrier of the UE according to the connection reestablishment request message.
- the sending module 42 is specifically configured to send a connection reestablishment request message to the network side device by using the default configuration in the selected cell, and release the configuration information of the multi-carrier, and roll back to the single carrier state.
- the processing module 43 is connected to the sending module 42 for recovering the SRB1 in a single carrier, and re-entering the multi-carrier state through the RRC connection reconfiguration process.
- modules of the device of the present invention may be integrated or integrated.
- the above modules can be combined into one module, or can be further split into multiple sub-modules.
- the UE that performs RRC connection reestablishment in the multi-carrier working state can return to the multi-carrier state as soon as possible, and save the signaling overhead of the air interface and the state transition delay, and Avoid the problem of PCC confusion.
- the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
- a form of software product is embodied, the computer software product being stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the present invention.
- a computer device which may be a personal computer, a server, or a network device, etc.
- modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
- the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
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Abstract
本发明公开了一种多载波系统的连接重建方法和设备,该方法包括:如果用户设备UE在多载波状态下触发连接重建过程,网络侧设备接收来自所述UE在所选择小区向所述网络侧设备发送的连接重建请求消息;所述网络侧设备根据所述连接重建请求消息对所述UE的多载波进行无线资源配置。本发明实施例中,节省了空口的信令开销以及状态转换时延。
Description
一种多载波系统的连接重建方法和设备 本申请要求于 2010 年 4 月 1 日提交中国专利局, 申请号为 201010139697.2, 发明名称为 "一种多载波系统的连接重建方法和设 备"的中国专利申请的优先权,其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域,尤其涉及一种多载波系统的连接重建 方法和设备。 背景技术
LTE ( Long Term Evolution, 长期演进)是 3G ( 3rd Generation, 第三代数字通信 )的演进,采用 OFDM( Orthogonal Frequency Division Multiplexing , 正交频分复用) 和 MIMO ( Multiple Input Multiple Output, 多输入多输出 )作为该 LTE无线网络演进的标准。 在 LTE 系统以及以前的无线通信系统中, 一个小区中只有一个载波, 如图 1 所示,在 LTE系统中的最大带宽为 20MHz;在 LTE系统中, UE( User Equipment, 用户设备) 同时只能在一个载波下工作, 而一个 LTE小 区只有一个载波, 每个 LTE小区由一个在网络中唯一的号码来标识。
随着移动终端用户数量的迅速增长,终端用户的业务容量呈指数 增长, 为了满足持续增加的终端用户的业务需求, 需要提供更大的带 宽来满足终端用户的业务和应用所需要的更高峰值速率。 在 LTE-A ( LTE- Advanced , 高级 LTE ) 系统中, 系统的峰值速率比 LTE有巨 大的提高, 如果只使用一个最大带宽为 20MHz的载波, 显然是无法 达到峰值速率的要求的。
因此, LTE-A系统需要扩展终端用户可以使用的带宽, 由此引入
了 CA ( Carrier Aggregation, 载波聚合)技术, 即将同一个 eNB (或 基站) 下的多个连续或不连续的载波聚合在一起(不同 eNB 下的小 区或成员载波之间不能聚合), 同时为 UE服务, 以提供 UE所需的速 率。上述聚合在一起的载波称为 CC ( Component Carrier,成员载波), 每个小区都可以是一个成员载波, 不同 eNB 下的小区 (成员载波) 不能聚合。
为了保证 LTE下的 UE能在每一个聚合的载波下工作,要求载波 聚合时每一个载波最大不超过 20MHz, 如图 2所示, 为一种 LTE-A 下的载波聚合技术示意图, LTE-A的基站下有 4个可聚合的载波,基 站可同时在 4个载波上和 UE进行数据传输, 以提高系统吞吐量。
现有技术中, 针对 LTE系统(即单载波系统), 当 UE发生切换 失败、 RLF( Radio Link Failure,无线链路失败 ), RRC( Radio Resource Control, 无线资源控制协议)连接重配失败、 或者完整性检验失败等 情况时, 均会触发 UE进行 RRC连接重建过程。
在实现本发明的过程中,发明人发现现有技术中至少存在以下问 题: 现有技术中, 只对单载波情况下的 RRC连接重建过程进行了约 定, 而对于多载波的情况(如当 UE处于 CA状态时), 如果发生了 RRC连接重建过程, 则该 RRC连接重建过程应该如何进行, 现有技 术中并没有相应的解决方案。 发明内容
本发明提供一种多载波系统的连接重建方法和设备,以在多载波 系统下, 实现连接重建过程。
为了达到上述目的,本发明实施例提出一种多载波系统的连接重 建方法, 包括:
如果用户设备 UE在多载波状态下触发连接重建过程, 网络侧设
备接收来自所述 UE在所选择小区向所述网络侧设备发送的连接重建 请求消息;
所述网络侧设备根据所述连接重建请求消息对所述 UE的多载波 进行无线资源配置。
本发明实施例提出一种网络侧设备, 包括:
接收模块, 用于当 UE在多载波状态下触发连接重建过程时, 接 收来自所述 UE在所选择小区向网络侧设备发送的连接重建请求消 配置模块,用于根据所述接收模块接收的所述连接重建请求消息 对所述 UE的多载波进行无线资源配置。
一种多载波系统的连接重建方法, 包括:
如果所述 UE在多载波状态下触发连接重建过程时, 则在所选择 小区向网络侧设备发送连接重建请求消息; 由所述网络侧设备根据所 述连接重建请求消息对所述 UE的多载波进行无线资源配置。
本发明实施例提出一种用户设备 UE, 包括:
判断模块,用于判断 UE在多载波状态下是否触发连接重建过程; 发送模块, 用于当所述判断模块的判断结果为所述 UE在多载波 状态下触发连接重建过程时,在所选择小区向网络侧设备发送连接重 建请求消息; 由所述网络侧设备根据所述连接重建请求消息对所述 UE的多载波进行无线资源配置。
本发明实施例提出一种多载波系统的连接重建方法, 包括: 如果 UE在多载波状态下触发连接重建过程, 网络侧设备接收来 自所述 UE在所选择小区向所述网络侧设备发送的连接重建请求消 所述网络侧设备根据所述连接重建请求消息对所述 UE的单载波
进行无线资源配置。
本发明实施例提出一种网络侧设备, 包括:
接收模块, 用于当 UE在多载波状态下触发连接重建过程时, 接 收来自所述 UE在所选择小区向网络侧设备发送的连接重建请求消 配置模块,用于根据所述接收模块接收的所述连接重建请求消息 对所述 UE的单载波进行无线资源配置。
一种多载波系统的连接重建方法, 包括:
如果所述 UE在多载波状态下触发连接重建过程时, 所述 UE在 所选择小区向网络侧设备发送连接重建请求消息; 由所述网络侧设备 根据所述连接重建请求消息对所述 UE的单载波进行无线资源配置。
本发明实施例提出一种用户设备 UE, 包括:
判断模块,用于判断 UE在多载波状态下是否触发连接重建过程; 发送模块, 用于当所述判断模块的判断结果为所述 UE在多载波 状态下触发连接重建过程时,在所选择小区向网络侧设备发送连接重 建请求消息; 由所述网络侧设备根据所述连接重建请求消息对所述 UE的单载波进行无线资源配置。
与现有技术相比, 本发明至少具有以下优点:
使在多载波工作状态下发生 RRC连接重建的 UE可以尽快的回 到多载波状态, 并且节省了空口的信令开销以及状态转换时延, 并避 免了 PCC混淆的问题。 附图说明
图 1是现有技术 LTE系统中一个小区中只有一个载波的示意图; 图 2是现有技术 LTE-A下的载波聚合技术示意图;
图 3 是本发明实施例一提供的一种多载波系统的连接重建方法
流程示意图;
图 4是本发明实施例二提供的一种多载波系统的连接重建方法 流程示意图;
图 5是本发明实施例中所使用的应用场景示意图;
图 6是本发明实施例三提供的一种多载波系统的连接重建方法 流程示意图;
图 7 是本发明实施例四提供的一种多载波系统的连接重建方法 流程示意图;
图 8是本发明实施例五提供的一种网络侧设备结构示意图; 图 9是本发明实施例六提供的一种用户设备结构示意图; 图 10是本发明实施例七提供的一种网络侧设备结构示意图; 图 11是本发明实施例八提供的一种用户设备结构示意图。 具体实施方式
为了使公众能够清楚的了解本发明实施例所提供的技术方案,首 先介绍以下知识。
( 1 ) LTE系统中的 RRC连接重建过程。
由于 LTE系统为单载波系统, 当 UE发生切换失败、 RLF、 RRC 连接重配失败、 或者完整性检验失败等情况时, 均会触发 UE进行 RRC 连接重建过程。 该 RRC 连接重建过程的目的是恢复 SRB1 ( Signaling Radio Bearer 1 , 信令无线 7 载 1 ) 以及恢复安全性。 该 RRC连接重建过程包括以下步骤:
1 )UE挂起除了 SRB0之外的所有 RB ( Radio bearer,无线承载)。
2 ) UE重置 MAC ( Media Access Control, 介质访问控制 )层, 并使用缺省配置进行小区的选择过程。 其中, 该缺省配置包括 default
(默认)物理层配置、 MAC层配置和 SPS( Semi Persistence Schedule ,
半持续调度) 配置等。
3 )当 UE选择了一个合适的小区( suitable cell )时, 则在该选择 的小区向基站发送 RRC连接重建请求消息。 其中, 该 RRC连接重建 请求消息中包含了 UE的标识信息。
4 )基站接收到 UE的 RRC连接重建请求消息, 如果允许 UE重 建(即基站侧有该 UE的上下文信息 ), 则向 UE发送 RRC连接重建 消息。 该 RRC连接重建消息中如果携带无线资源的配置信息, 则采 用增量配置的方式。
增量配置的基础是缺省配置, 该增量配置是指 UE接收到 RRC 连接重建消息之后, 对于在 RRC连接重建消息中并未出现的配置信 息, UE将沿用之前保存的值,对于出现的配置信息, UE将使用新值。
5 ) UE接收到 RRC连接重建消息, 恢复 SRB1 , SRB2和所有 DRB仍然挂起,并根据该 RRC连接重建消息中的安全信息更新密钥。
如果该 RRC连接重建消息中包含专用配置信息(如物理层配置、 MAC层配置、 SPS配置和 SRB1的配置等 ), 则 UE按照其中的配置 信息对低层进行配置, 当配置完成后, UE向基站发送 RRC连接重建 完成消息,并认为 RRC连接重建过程完成。该低层包括 PDCP( Packet Data Converge Protocol , 分组数据汇聚协议)、 RLC ( Radio Link Control, 无线链路控制协议)、 MAC和物理层等。
6 )基站接收到 RRC连接重建完成消息, 认为 RRC连接重建过 程完成。 为了恢复 SRB2和 DRB, 基站需要在接收到 RRC连接重建 完成消息之后,向 UE发送 RRC连接重配消息,以恢复 SRB2和 DRB。
7 )如果 UE接收到的 RRC连接重配消息是重建过程后的第一条 重配消息, 恢复 SRB2和所有 DRB, 并按照 RRC连接重配消息的内 容进行低层配置, 当重配完成后, SRB2和 DRB也恢复了。
( 2 )主载波和辅载波
在 CA技术中引入了主载波 ( Primary Component Carrier, PCC ) 和辅载波( Secondary Component Carrier, SCC ) 的相无念, UE只有一 个主载波(分为上行和下行), 其他的载波均为辅载波。 主载波的特 征至少包括: 1 )上行主载波用于传输物理层上行控制信息, 物理层 上行控制信息包括 ACK(确认字符)/NACK(否认字符)、 CQK Channel Quality Indicator, 信道质量指示)和 D-SR等信息。 2 )下行主载波不 能被去激活。 3 ) 当下行主载波发生无线链路失败时, UE触发 RRC 连接重建过程; 当辅载波发生无线链路失败时, 不会触发 RRC连接 重建过程。 4 ) 下行主载波的系统信息获取和更新与 LTE过程类似。 5 ) NAS ( Non Access Stratum, 非接入层 )信息通过下行主载波获得。
UE初始建立连接的载波是 PCC, 其他后续配置和激活的载波都 是 scc。只有下行辅载波才能被激活去激活,上行载波默认配置即激 活。 由于主载波上绑定了 艮多特性(如只在上行主载波传输物理层上 行控制信息), 因此 UE在 CA工作状态下, 必须有主载波。
( 3 )载波配置和激活
在 LTE-A系统中,为了使 UE进入 CA工作状态,基站通过 RRC 信令(如 RRC连接重配消息)将多载波(均为 SCC ) 的配置信息发 送给 UE, 当 UE接收到这些配置信息后, 默认这些载波的状态是去 激活的, 还不能工作。 后续过程中, 基站再通过 MAC信令激活某些 已经配置的 SCC, 而一旦 SCC被激活, 则可以进行正常的数据收发。
另外, 只有下行载波可以激活去激活, 上行载波只要配置了就是 激活。 所以, 下行载波激活之后可以正常收发数据是指可以监听和解 码 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道) 和 PDSCH ( Physical Downlink Shared Channel, 物理下行共享信道)。
实施例一
本发明实施例一提供一种多载波系统的连接重建方法,如图 3所 示, 包括以下步骤:
步骤 301 ,如果用户设备 UE在多载波状态下触发连接重建过程, 所述 UE在所选择小区向网络侧设备发送连接重建请求消息。 本步骤 包括: 所述 UE在所选择小区使用缺省配置向所述网络侧设备发送连 接重建请求消息。
步骤 302, 所述网络侧设备根据所述连接重建请求消息对所述 UE的多载波进行无线资源配置。 本步骤包括: 所述网络侧设备在连 接重建消息中采用增量配置的方式对所述 UE的多载波进行无线资源 配置, 并将所述连接重建消息发送给所述 UE。
本发明实施例中, 本步骤进一步包括: 如果所述 UE重建时所选 择小区位于 UE的载波配置集合之内, 且所述 UE保存了多载波状态 下的其他成员载波 CC的配置信息时, 则所述网络侧设备将基于原配 置信息采用增量配置的方式对所述 UE的多载波进行无线资源配置。
如果所述 UE重建时所选择小区位于 UE的载波配置集合之内, 且所述 UE保存了多载波状态下的其他 CC的缺省配置信息时, 则所 述网络侧设备将基于缺省配置信息采用增量配置的方式对所述 UE的 多载波进行无线资源配置。
如果所述 UE重建前后的主载波 PCC不同, 则所述网络侧设备 将重新指定 PCC和辅载波 SCC, 并基于原配置信息或者缺省配置信 息采用增量配置的方式对所述 UE的多载波进行无线资源配置; 如果 所述 UE重建前后的 PCC相同, 则所述网络侧设备将直接基于原配 置信息或者缺省配置信息采用增量配置的方式对所述 UE的多载波进 行无线资源配置。
如果所述 UE重建前后的 PCC不同, 所述网络侧设备需要释放 源 PCC的物理层上行控制信道配置信息, 并为新 PCC配置物理层上 行控制信道配置的信息。
本发明实施例中, UE在所选择小区向网络侧设备发送连接重建 请求消息, 包括: 如果所述 UE重建时所选择小区不位于 UE的载波 配置集合之内, 所述 UE释放所有配置, 并回退到单载波工作状态向 网络侧设备发送连接重建请求消息; 或者, 所述 UE保留多载波配置 信息,在所选择小区使用缺省配置向所述网络侧设备发送连接重建请 求消息;其中,所述多载波配置信息为原配置信息或者缺省配置信息。
此时, 网络侧设备在连接重建消息中采用增量配置的方式对 UE 的多载波进行无线资源配置包括: 如果 UE重建时所选择小区不位于 UE的载波配置集合之内, 所述网络侧设备重新分配所述 UE的载波 集合, 重新指定 PCC和辅载波 SCC, 并基于原配置信息或者缺省配 置信息采用增量配置的方式对所述 UE的多载波进行无线资源配置。
UE在所选择小区向网络侧设备发送连接重建请求消息包括: 如 果所述 UE采用快速重建过程时, 所述 UE在载波配置集合之内选择 重建小区, 如果所述载波配置集合之内没有合适的小区, 则在所述载 波配置集合之外选择重建小区,并在所选择的重建小区向网络侧设备 发送连接重建请求消息。
在本发明实施例中, 连接重建请求消息包括: RRC 连接重建请 求消息; 连接重建消息包括: RRC 连接重建消息; 所述缺省配置包 括 MAC配置、 SPS配置和物理层配置; 所述物理层配置包括以下内 容中的一种或几种: 载波编号、 PUCCH配置、 PDSCH配置、 PUSCH 配置、 功控配置、 。(51上"¾配置、 SRS配置、 SR配置、 天线配置; 另外, 将连接重建消息发送给所述 UE之后还包括: UE根据对
所述 UE的多载波进行无线资源配置的信息对低层进行重新配置, 然 后利用新配置向所述网络侧设备发送 RRC连接重建完成消息。其中, 低层至少包括物理层, 还可以包括 PDCP层、 RLC层和 MAC层。
可见, 通过使用本发明实施例提供的方法, 使在多载波工作状态 下发生 RRC连接重建的 UE可以尽快的回到多载波状态, 并且节省 了空口的信令开销以及状态转换时延, 并避免了 PCC混淆的问题。
实施例二
为了更加清楚的说明本发明实施例提供的技术方案,针对上述实 施例一, 本发明实施例二提供一种多载波系统的连接重建方法, 如图 4所示, 包括以下步骤:
步骤 401 , 如果 UE在多载波状态下触发连接重建过程, 该 UE 在所选择小区向网络侧设备发送连接重建请求消息。
该网络侧设备包括但不限于 E-UTRAN、 RNC ( Radio Network Controller, 无线网络控制器)、 NB ( Node B, 节点 B )、 eNB、 Relay、 基站等, 该网络侧设备并不局限于上述设备, 所有位于网络侧可以向 UE发送 RRC连接重配置消息的设备均在本发明保护范围之内。
该连接重建请求消息包括但不限于 RRC连接重建请求消息, 实 际应用中, 该连接重建请求消息可以根据实际需要任意选择, 本发明 实施例中以 RRC连接重建请求消息为例进行说明。
本步骤中, 在所选择小区向网络侧设备发送连接重建请求消息 时, 该 UE是在所选择小区使用缺省配置向网络侧设备发送连接重建 请求消息的。 其中, 该缺省配置至少包括介质访问控制 MAC配置、 半持续调度 SPS配置和物理层配置等。
需要注意的是, UE在所选择小区向网络侧设备发送连接重建请 求消息时, 该 UE还需要同时保存多载波的配置信息; 该多载波的配
置信息至少包括物理层多载波配置,该物理层多载波配置至少包括以 下信息中的一种或任意组合: 载波编号、 PUCCH ( Physical Uplink Control Channel, 物理上行控制信道) 配置、 PDSCH配置、 PUSCH ( Physical Uplink Shared Channel, 物理上行共享信道)配置、 功控配 置、 CQI上报配置、 SRS ( Sounding Reference Signal, 监测参考信号) 配置、 SR配置、 天线配置等。
步骤 402, 网络侧设备根据该连接重建请求消息对该 UE的多载 波进行无线资源配置。 本步骤中, 该网络侧设备需要在连接重建消息 中采用增量配置的方式对该 UE的多载波进行无线资源配置。 该连接 重建消息是对应连接重建请求消息的, 例如, 当连接重建请求消息为 RRC连接重建请求消息时,则该连接重建消息为 RRC连接重建消息。
具体的, 当接收到来自 UE的 RRC连接重建请求消息时, 该网 络侧设备需要进行该 UE的 RRC连接重建过程,并向该 UE发送 RRC 连接重建消息, 该 RRC连接重建消息中需要携带对该 UE的多载波 进行无线资源配置的信息。
本发明实施例中,在对该 UE的多载波进行无线资源配置过程中, 分为以下几种情况进行考虑:
第一种情况, 如果 UE在重建时选择的小区在 UE的载波配置集 合之内, 且 UE保存了之前多载波 CA状态下的其他 CC的配置信息 时, 则该网络侧设备需要基于原配置信息采用增量配置的方式对该 UE的多载波进行无线资源配置。
第二种情况, 如果 UE在重建时选择的小区在 UE的载波配置集 合之内, 且 UE保存了之前多载波 CA状态下的其他 CC的缺省配置 信息时,则该网络侧设备需要基于缺省配置信息采用增量配置的方式 对该 UE的多载波进行无线资源配置。
需要注意的是, 在上述第一种情况和第二种情况中, 如果 UE重 建前后的 PCC不同, 则网络侧设备需要重新指定 PCC和 SCC, 并基 于原配置信息或者缺省配置信息采用增量配置的方式对该 UE的多载 波进行无线资源配置; 其中, 该重新指定 PCC和 SCC的过程可以通 过显式方式或隐式方式进行重新指定。
如果 UE重建前后的 PCC不同时, 该网络侧设备还需要释放源 PCC的物理层上行控制信道配置信息, 并为新 PCC配置物理层上行 控制信道配置的信息。 该物理层上行控制信道配置信息包括: CQI、 D-SR以及 ACK/NACK等信息。
而如果 UE重建前后的 PCC相同时, 则网络侧设备将直接基于 原配置信息或者缺省配置信息采用增量配置的方式对该 UE的多载波 进行无线资源配置。
第三种情况, 如果 UE在重建时选择的小区不在 UE的载波配置 集合之内时, 则该 UE需要释放所有配置信息, 并回退到单载波工作 状态向该网络侧设备发送连接重建请求消息; 或者, 该 UE在所选择 小区使用缺省配置向该网络侧设备发送连接重建请求消息。
在这种情况下, 该网络侧设备需要重新分配该 UE的载波集合, 重新指定 PCC和 SCC, 并基于原配置信息或者缺省配置信息采用增 量配置的方式对 UE的多载波进行无线资源配置。其中重新指定 PCC 和 SCC的过程可以通过显式方式或隐式方式进行重新指定。
第四种情况, 如果 UE需要采用快速重建过程时, 则该 UE需要 在载波配置集合之内选择重建小区,如果载波配置集合之内没有合适 的小区, 则在载波配置集合之外选择重建小区, 并在所选择的重建小 区向网络侧设备发送连接重建请求消息。
步骤 403,网络侧设备向该 UE发送 RRC连接重建消息。该 RRC
连接重建消息中携带对该 UE的多载波进行无线资源配置的信息。 步骤 404, UE根据对该 UE的多载波进行无线资源配置的信息对 低层进行重新配置。 该低层至少包括物理层, 还可以包括 PDCP层、
RLC层和 MAC层。
为了进一步说明上述技术方案,以下结合几种具体的应用场景对 本发明实施例所提供的多载波系统的连接重建方法进行说明。
应用场景 1
本应用场景下, 为 UE保存多载波配置, 且 UE重建前后 PCC未 改变时的情况, 如图 5所示, 基站 1下有三个小区, 分别为频率 fl 上的小区 1、 频率 f2上的小区 2和频率 f3上的小区 3, 该 UE当前工 作在载波聚合状态下, 且聚合了小区 1、 小区 2和小区 3, 其中, 小 区 1为 PCC, 小区 2和小区 3为 SCC。
UE在载波聚合状态(即多载波状态)下, 由于下行 PCC发生了 RLF而导致 UE发起 RRC连接重建过程时, UE挂起除了 SRB0之夕卜 的所有 RB, 并选择小区 1向基站发送连接重建请求消息, 此时, 该 UE需要在小区 1上使用缺省的 MAC层配置、 SPS配置, 以及缺省 的小区 1的物理层配置, 向基站发送 RRC连接重建请求消息, 并保 存其他 CC (小区 2和小区 3 )在 CA状态时的物理层配置。
当基站接收到该 RRC连接重建请求消息后,如果判决接纳该 UE 的重建过程, 则向该 UE发送 RRC连接重建消息, 该 RRC连接重建 消息中携带多载波的无线资源配置信息,该多载波的无线资源配置信 息是以增量配置的方式进行配置的。 其中, 该多载波的无线资源配置 信息包括: 指示小区 1仍为 PCC, 对小区 1采用基于 PCC的增量配 置,指示对其他小区采用基于 SCC的增量配置(主要是物理层配置)。
需要注意的是, 上述的指示信息可以是显式方式进行指示, 也可
以是隐式方式进行指示,其中, 隐式的方式可以是将小区 1按照 PCC 配置,即存在上行物理控制信道配置信息,则 UE默认该 CC为 PCC。
进一步的, UE按照该 RRC连接重建消息中的信息进行低层配 置, 配置完成后恢复 SRB1 , 并向基站发送 RRC连接重建完成消息。 此时, UE在多载波上恢复了 SRB1 , 只有 PCC (小区 1 )处于激活状 态, 而其他 SCC仍然处于去激活状态。
此后, 为了恢复 SRB2和 DRB , 基站需要向 UE发送 RRC连接 重配消息,该 RRC连接重配消息中可以不携带多载波的配置信息(例 如, 物理层配置), 即可以恢复 SRB2和 DRB。
当 RRC连接重配完成后,基站需要使用 MAC信令激活 UE保存 了配置信息的 SCC (例如, 小区 2, 小区 3 ), 使得 UE重新进入到 CA的传输状态。 如果 SRB1恢复时, 则其他 SCC默认为激活的, 则 后续不需要 MAC信令来激活 SCC了,只需要重配过程恢复 SRB2和 DRB即可, 除非 RRC连接重配消息对 SCC的低层配置进行了修改 (主要指物理层配置 ), 则需要后续的 MAC信令再激活 SCC。
需要注意的是, 上述的物理层配置信息包括以下的一种或多种: 载波编号、 PUCCH配置、 PDSCH配置、 PUSCH配置、 功控配置、 CQI上报配置、 SRS配置、 SR配置、 天线配置等。
应用场景 2
本应用场景下, 为 UE保存多载波配置, 且 UE重建后的 PCC仍 在载波配置集合内的情况, 继续如图 5所示的示意图。
UE在载波聚合状态下, 由于下行 PCC发生了 RLF而导致 UE 发起 RRC连接重建过程时, UE挂起除了 SRB0之外的所有 RB, 并 选择小区 2向基站发送连接重建请求消息, 此时, 该 UE需要在小区 2上使用缺省的 MAC层配置、 SPS配置, 以及缺省的小区 2的物理
层配置, 向基站发送 RRC连接重建请求消息, 并保存其他 CC (小区 1和小区 3 )在 CA状态时的物理层配置。
当基站接收到该 RRC连接重建请求消息后,如果判决接纳该 UE 的重建过程, 则向该 UE发送 RRC连接重建消息, 该 RRC连接重建 消息中携带多载波的无线资源配置信息,该多载波的无线资源配置信 息是以增量配置的方式进行配置的。 其中, 该多载波的无线资源配置 信息包括:指示小区 2为 PCC,将小区 2的物理层配置信息配为 PCC 的, 并指示小区 1为 SCC, 将小区 1的物理层配置信息配为 SCC的, 对其他小区(小区 3 )采用基于 SCC的增量配置(主要是物理层配置)。
需要注意的是, 上述的指示信息可以是显式方式进行指示, 也可 以是隐式方式进行指示,其中, 隐式的方式可以是将小区 1按照 PCC 配置,即存在上行物理控制信道配置信息,则 UE默认该 CC为 PCC。
进一步的, UE按照该 RRC连接重建消息中的信息进行低层配 置, 配置完成后恢复 SRB1 , 并向基站发送 RRC连接重建完成消息。 此时, UE在多载波上恢复了 SRB1 , 只有 PCC (小区 2 )处于激活状 态, 而其他 SCC仍然处于去激活状态; 后续过程以应用场景 1类似, 本应用场景中不再详加赞述。
应用场景 3
本应用场景下, 为 UE保存多载波配置, 且 UE重建后的 PCC不 在载波配置集合内的情况, 继续如图 5所示的示意图。
UE在载波聚合状态下, 由于下行 PCC发生了 RLF而导致 UE 发起 RRC连接重建过程时, UE挂起除了 SRB0之外的所有 RB, 如 果 UE选择了当前配置集合外的小区发起 RRC连接重建过程, 例如, 选择了小区 4向基站发送连接重建请求消息。 此时, UE有两种处理 方式: 1 ) UE释放所有配置, 并回退到单载波工作状态向基站发送连
接 RRC重建请求消息; 2 ) UE使用缺省的 MAC层配置、 SPS配置, 以及小区 4的缺省物理层配置, 在小区 4向基站发送 RRC连接重建 请求消息。
当基站接收到该 RRC连接重建请求消息后,如果判决接纳该 UE 的重建过程, 则向该 UE发送 RRC连接重建消息, 其中, 该 RRC连 接重建消息中需要携带载波集合重配置信息, 即重新配置 UE工作的 载波集合, 例如小区 1 , 小区 2和小区 4 (将小区 3从配置集合中删 除)。 另外, 该 RRC连接重建消息中还需要携带多载波的无线资源配 置信息,该多载波的无线资源配置信息是以增量配置的方式进行配置 的。 其中, 该多载波的无线资源配置信息包括: 指示小区 4为 PCC, 将小区 4的物理层配置信息配为 PCC的 (可以是基于缺省配置的增 量配置), 指示小区 1为 SCC, 将小区 1的物理层配置信息配为 SCC 的(可以是基于缺省配置的增量配置, 也可以是基于原配置的增量配 置 ), 对其他小区 (小区 2 )采用基于 SCC的增量配置(主要是物理 层配置)。如果有其他小区是新加入配置集合的, UE之前没有保存其 配置信息,则认为该 SCC是基于缺省配置进行增量配置的。以上 PCC 和 SCC的指示信息可以是显式的也可以是隐式的。
进一步的, UE按照该 RRC连接重建消息中的信息进行低层配 置, 配置完成后恢复 SRB1 , 并向基站发送 RRC连接重建完成消息。 后续过程以应用场景 1类似, 本应用场景中不再详加赘述。
应用场景 4
本应用场景下, 为 UE保存多载波配置, 并进行快速重建过程的 情况, 继续如图 5所示的示意图。
UE在载波聚合状态下, 由于下行 PCC发生了 RLF而导致 UE 发起 RRC连接重建过程时, UE挂起除了 SRB0之外的所有 RB, 并
进行快速重建过程。 其中, 该快速重建过程具体为: 首先在 UE配置载波集合内选择小区, 如果配置集合内没有合适 的小区, 则在配置集合之外选择小区。 其中, 如果在配置集合内选择 了合适的小区时, 则需要按照保存多载波配置的情况进行相应的处 理; 如果在配置集合为选择了合适的小区时, 则需要按照释放多载波 配置的情况进行相应的处理。
具体的,如果在配置集合内选择了合适的小区,则需要发起 RRC 连接重建过程。 其中, 如果选择发起重建过程的小区的仍为之前的 PCC, 则可以按照应用场景 1的方式进行处理, 而与应用场景 1的不 同之处在于, UE在接收到 RRC连接重建消息,按照其配置信息配置 了低层之后, 直接恢复 SRB2和 DRB (此时 SCC可以是激活的, 也 可以是未激活的, 等待后续 MAC信令激活, 如应用场景 1所述), 不需要后续的重配过程, 因此, UE可以迅速恢复业务, 称为快速重 建。
如果选择发起重建过程的小区的不是之前的 PCC,则按照应用场 景 2的方式进行处理,与应用场景 2不同之处在于, UE在接收到 RRC 连接重建消息, 按照其配置信息配置低层之后, 直接恢复 SRB2 和 DRB (此时 SCC可以是激活的, 也可以是未激活的, 等待后续 MAC 信令激活, 如应用场景 2所述), 不需要后续的重配过程, 因此, UE 可以迅速恢复业务。
应用场景 5
本应用场景下, 为 UE使用多载波缺省配置, 完成重建过程, 继 续如图 5所示的示意图。
本应用场景中, 既可以应用于一般的重建过程, 也可以应用于快 速重建过程。 本应用场景的特点为, 允许 UE在多载波上完成重建过
程, 具体的载波集合可以是原集合(例如, 应用场景 1和应用场景 2 的情况 ),也可以为通过 RRC连接重建消息确定(例如,应用场景 3 ), 多个载波均使用缺省配置,发起 RRC连接重建过程的载波即为 PCC。
RRC 连接重建消息中包含多载波配置信息, 其中当前发起重建 过程的小区为基于缺省配置的 PCC配置信息, 其他小区均为基于缺 省配置的 SCC配置信息。
在 RRC连接重建过程完成之后, 如果是一般的重建过程, 则后 续处理与应用场景 1相同 (有重配过程来恢复 SRB2和 DRB ) , 如果 是快速重建, 则后续处理与应用场景 4相同(无重配过程, 直接恢复 SRB2和 DRB )。
可见, 通过使用本发明实施例以及各个应用场景提供的方法, 使 在多载波工作状态下发生 RRC连接重建的 UE可以尽快的回到多载 波状态, 并且节省了空口的信令开销以及状态转换时延, 并避免了 PCC混淆的问题。
实施例三
本发明实施例三提供一种多载波系统的连接重建方法,如图 6所 示, 包括以下步骤:
步骤 601 ,如果 UE在多载波状态下触发连接重建过程,所述 UE 在所选择小区向网络侧设备发送连接重建请求消息。 本步骤包括: 所 述 UE在所选择小区使用缺省配置向所述网络侧设备发送连接重建请 求消息, 并释放多载波的配置信息, 回退到单载波状态。
步骤 602, 所述网络侧设备根据所述连接重建请求消息对所述 UE的单载波进行无线资源配置。 本步骤包括: 所述网络侧设备在连 接重建消息中采用增量配置的方式对所述 UE的单载波进行无线资源 配置, 并将所述连接重建消息发送给所述 UE。 所述连接重建消息中
携带对该 UE的单载波进行无线资源配置的信息。
另夕卜,将所述连接重建消息发送给所述 UE, 则 RRC连接重建完 成, 此时, 所述 UE需要在单载波恢复信令无线承载 1SRB1 , 之后基 站通过 RRC连接重配过程使 UE重新进行 CA状态。
需要说明的是, 连接重建请求消息包括: RRC 连接重建请求消 息; 所述连接重建消息包括: RRC 连接重建消息; 所述缺省配置包 括 MAC配置、 SPS配置和物理层配置; 所述物理层配置, 包括以下 内容中的一种或几种:载波编号、 PUCCH配置、 PDSCH配置、 PUSCH 配置、 功控配置、 。(51上"¾配置、 SRS配置、 SR配置、 天线配置。
可见, 通过使用本发明提供的方法, 使在多载波工作状态下发生 RRC连接重建的 UE可以尽快的回到多载波状态,并且节省了空口的 信令开销以及状态转换时延, 并避免了 PCC混淆的问题。
实施例四
为了更加清楚的说明本发明实施例提供的技术方案,针对上述实 施例三, 本发明实施例四提供一种多载波系统的连接重建方法, 如图
7所示, 包括以下步骤:
步骤 701 , 如果 UE在多载波状态下触发连接重建过程, 该 UE 在所选择小区向网络侧设备发送连接重建请求消息。该连接重建请求 消息包括但不限于 RRC连接重建请求消息, 本发明实施例中以 RRC 连接重建请求消息为例进行说明。
本步骤中, 在所选择小区向网络侧设备发送连接重建请求消息 时, 该 UE是在所选择小区使用缺省配置向网络侧设备发送连接重建 请求消息的。 该缺省配置至少包括介质访问控制 MAC配置、 半持续 调度 SPS配置和物理层配置等。该物理层配置至少包括以下信息中的 一种或任意组合: 载波编号、 PUCCH配置、 PDSCH配置、 PUSCH
配置、 功控配置、 CQI上报配置、 SRS配置、 SR配置、 天线配置等。 需要注意的是, UE在所选择小区向网络侧设备发送连接重建请 求消息时, 该 UE还需要同时释放多载波的配置信息, 并回退到单载 波状态。
步骤 702, 网络侧设备根据该连接重建请求消息对该 UE的单载 波进行无线资源配置。 本步骤中, 该网络侧设备需要在连接重建消息 中采用增量配置的方式对该 UE的单载波进行无线资源配置。 该连接 重建消息是对应连接重建请求消息的, 例如, 当连接重建请求消息为 RRC连接重建请求消息时,则该连接重建消息为 RRC连接重建消息。
具体的, 当接收到来自 UE的 RRC连接重建请求消息时, 该网 络侧设备需要进行该 UE的 RRC连接重建过程,并向该 UE发送 RRC 连接重建消息, 其中, 该 RRC连接重建消息中需要携带对该 UE的 单载波进行无线资源配置的信息。
步骤 703,网络侧设备向该 UE发送 RRC连接重建消息。该 RRC 连接重建消息中携带对该 UE的单载波进行无线资源配置的信息。
步骤 704, RRC连接重建完成后, UE在单载波恢复 SRB1; 之 后基站通过 RRC连接重配过程使 UE重新进行 CA状态。
为了进一步说明上述技术方案,以下结合一种具体的应用场景对 本发明实施例所提供的多载波系统的连接重建方法进行说明。
应用场景 6
本应用场景下, 为 UE释放多载波配置的情况, 继续如图 5所示 的示意图。 UE在载波聚合状态下, 由于下行 PCC发生了 RLF而导 致 UE发起 RRC连接重建过程时, UE挂起除了 SRB0之外的所有 RB,释放所有 CC在 CA状态时的物理层配置,并回退到单载波状态, 在所选择的小区 (例如, 小区 1 )使用缺省配置(MAC层配置、 SPS
配置和物理层配置 ) 向基站发送 RRC连接重建请求消息。
当基站接收到该 RRC连接重建请求消息后,如果判决接纳该 UE 的重建过程, 则向该 UE发送 RRC连接重建消息, 该 RRC连接重建 消息中只携带单载波的无线资源配置信息(即 UE当前发起重建的载 波一小区 1 ), 以增量配置的方式。
进一步的, UE按照该 RRC连接重建消息中的信息进行低层配 置, 完成后恢复 SRB1 , 向基站发送 RRC连接重建完成消息。 此时, UE在小区 1上恢复了 SRB1 ,且仅保存了小区 1的低层配置信息(例 如, 物理层配置), 可以将该小区作为后续 CA传输时的 PCC。
为了恢复 SRB2和 DRB, 在 UE完成 RRC连接重建之后, 基站 会向 UE发送 RRC连接重配消息, 该 RRC连接重配消息中可以携带 多载波的配置信息(例如, 物理层配置), 以便后续过程中在多载波 上恢复 SRB2和 DRB。 重配完成之后,基站再使用 MAC信令激活那 些 UE保存了配置信息的载波( SCC ) ,使 UE重新进入 CA传输状态。
可见, 通过使用本发明实施例以及各个应用场景提供的方法, 使 在多载波工作状态下发生 RRC连接重建的 UE可以尽快的回到多载 波状态, 并且节省了空口的信令开销以及状态转换时延, 并避免了 PCC混淆的问题。
实施例五
基于同样的发明构思, 本发明实施例五提供的一种网络侧设备, 如图 8所示, 包括:
接收模块 11 , 用于当 UE在多载波状态下触发连接重建过程时, 接收来自所述 UE在所选择小区向网络侧设备发送的连接重建请求消 配置模块 12, 用于根据所述接收模块 11接收的所述连接重建请
求消息对所述 UE的多载波进行无线资源配置。
所述配置模块 12具体用于在连接重建消息中采用增量配置的方 式对所述 UE的多载波进行无线资源配置。
本发明实施例中, 所述配置模块 12具体用于如果所述 UE重建 时所选择小区位于 UE的载波配置集合之内, 且所述 UE保存了多载 波状态下的其他成员载波 CC的配置信息时, 将基于原配置信息采用 增量配置的方式对所述 UE的多载波进行无线资源配置。
所述配置模块 12具体用于如果所述 UE重建时所选择小区位于 UE的载波配置集合之内,且所述 UE保存了多载波状态下的其他 CC 的缺省配置信息时,则将基于缺省配置信息采用增量配置的方式对所 述 UE的多载波进行无线资源配置。
所述配置模块 12具体用于如果所述 UE重建前后的主载波 PCC 不同, 则重新指定 PCC和 SCC, 并基于原配置信息或者缺省配置信 息采用增量配置的方式对所述 UE的多载波进行无线资源配置; 如果 所述 UE重建前后的 PCC相同, 则直接基于原配置信息或者缺省配 置信息采用增量配置的方式对所述 UE的多载波进行无线资源配置。
所述配置模块 12具体用于如果所述 UE重建前后的 PCC不同, 则释放源 PCC的物理层上行控制信道配置信息, 并为新 PCC配置物 理层上行控制信道配置的信息。
所述配置模块 12具体用于如果所述 UE重建时所选择小区不位 于 UE的载波配置集合之内, 重新分配所述 UE的载波集合, 重新指 定 PCC和辅载波 SCC, 并基于原配置信息或者缺省配置信息采用增 量配置的方式对所述 UE的多载波进行无线资源配置。
发送模块 13, 与所述配置模块 12连接, 用于将所述连接重建消 息发送给所述 UE。
需要注意的是, 所述连接重建请求消息包括: RRC 连接重建请 求消息; 所述连接重建消息包括: RRC 连接重建消息; 所述缺省配 置包括 MAC配置、 SPS配置和物理层配置; 所述物理层配置包括以 下内容中的一种或几种: 载波编号、 PUCCH 配置、 PDSCH 配置、 PUSCH配置、 功控配置、 CQI上报配置、 SRS配置、 SR配置、 天线 配置。
其中,本发明装置的各个模块可以集成于一体,也可以分离部署。 上述模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
实施例六
基于同样的发明构思,本发明实施例六提供的一种用户设备 UE, 如图 9所示, 包括:
判断模块 21 ,用于判断 UE在多载波状态下是否触发连接重建过 程。
发送模块 22, 用于当所述判断模块 21的判断结果为所述 UE在 多载波状态下触发连接重建过程时,在所选择小区向网络侧设备发送 连接重建请求消息; 由所述网络侧设备根据所述连接重建请求消息对 所述 UE的多载波进行无线资源配置。
本发明实施例中, 所述发送模块 22具体用于在所选择小区使用 缺省配置向所述网络侧设备发送连接重建请求消息。
所述发送模块 22具体用于如果所述 UE重建时所选择小区不位 于 UE的载波配置集合之内, 则释放所有配置, 并回退到单载波工作 状态向网络侧设备发送连接重建请求消息; 或者, 在所选择小区使用 缺省配置向所述网络侧设备发送连接重建请求消息。
所述发送模块 22具体用于如果所述 UE采用快速重建过程时, 则在载波配置集合之内选择重建小区,如果所述载波配置集合之内没
有合适的小区, 则在所述载波配置集合之外选择重建小区, 并在所选 择的重建小区向网络侧设备发送连接重建请求消息。
存储模块 23, 用于当所述判断模块 21的判断结果为所述 UE在 多载波状态下触发连接重建过程时, 存储多载波配置信息; 其中, 所 述多载波配置信息为原配置信息或者缺省配置信息。
配置模块 24,用于根据所述网络侧设备对所述 UE的多载波进行 无线资源配置的信息以及所述多载波配置信息对低层进行重新配置, 并利用新配置向所述网络侧设备发送 RRC连接重建完成消息。
其中,本发明装置的各个模块可以集成于一体,也可以分离部署。 上述模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
实施例七
基于同样的发明构思, 本发明实施例七提供的一种网络侧设备, 如图 10所示, 包括:
接收模块 31 , 用于当 UE在多载波状态下触发连接重建过程时, 接收来自所述 UE在所选择小区向网络侧设备发送的连接重建请求消 配置模块 32, 用于根据所述接收模块 32接收的所述连接重建请 求消息对所述 UE的单载波进行无线资源配置。
所述配置模块 32具体用于在连接重建消息中采用增量配置的方 式对所述 UE的单载波进行无线资源配置。
发送模块 33, 与所述配置模块 32连接, 用于将所述连接重建消 息发送给所述 UE。
本发明实施例中, 所述连接重建请求消息包括: RRC 连接重建 请求消息; 所述连接重建消息包括: RRC 连接重建消息; 所述缺省 配置包括 MAC配置、 SPS配置和物理层配置; 所述物理层配置包括
以下内容中的一种或几种: 载波编号、 PUCCH配置、 PDSCH配置、 PUSCH配置、 功控配置、 CQI上报配置、 SRS配置、 SR配置、 天线 配置。
其中,本发明装置的各个模块可以集成于一体,也可以分离部署。 上述模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
实施例八
基于同样的发明构思,本发明实施例八提供的一种用户设备 UE, 如图 11所示, 包括:
判断模块 41 ,用于判断 UE在多载波状态下是否触发连接重建过 程。
发送模块 42, 用于当所述判断模块 41的判断结果为所述 UE在 多载波状态下触发连接重建过程时,在所选择小区向网络侧设备发送 连接重建请求消息; 由所述网络侧设备根据所述连接重建请求消息对 所述 UE的单载波进行无线资源配置。
所述发送模块 42具体用于在所选择小区使用缺省配置向所述网 络侧设备发送连接重建请求消息, 并释放多载波的配置信息, 回退到 单载波状态。
处理模块 43,与所述发送模块 42连接,用于在单载波恢复 SRB1 , 并经过 RRC连接重配过程重新进入到多载波状态。
其中,本发明装置的各个模块可以集成于一体,也可以分离部署。 上述模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
可见, 通过使用本发明各个实施例提供的设备, 使在多载波工作 状态下发生 RRC连接重建的 UE可以尽快的回到多载波状态, 并且 节省了空口的信令开销以及状态转换时延, 并避免了 PCC混淆的问 题。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解 到本发明可借助软件加必需的通用硬件平台的方式来实现, 当然也可 以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解, 软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服 务器, 或者网络设备等)执行本发明各个实施例所述的方法。
本领域技术人员可以理解附图只是一个优选实施例的示意图,附 图中的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实 施例描述进行分布于实施例的装置中,也可以进行相应变化位于不同 于本实施例的一个或多个装置中。上述实施例的模块可以合并为一个 模块, 也可以进一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。 以上公开的仅为本发明的几个具体实施例, 但是, 本发明并非局 限于此,任何本领域的技术人员能思之的变化都应落入本发明的保护 范围。
Claims
1、 一种多载波系统的连接重建方法, 其特征在于, 包括: 如果用户设备 UE在多载波状态下触发连接重建过程, 网络侧设 备接收来自所述 UE在所选择小区向所述网络侧设备发送的连接重建 请求消息;
所述网络侧设备根据所述连接重建请求消息对所述 UE的多载波 进行无线资源配置。
2、 如权利要求 1所述的方法, 其特征在于, 所述网络侧设备接 收来自所述 UE在所选择小区向所述网络侧设备发送的连接重建请求 消息, 包括: 所述网络侧设备接收来自所述 UE在所选择小区使用缺 省配置向所述网络侧设备发送的连接重建请求消息;
所述网络侧设备根据所述连接重建请求消息对所述 UE的多载波 进行无线资源配置, 包括: 所述网络侧设备在连接重建消息中采用增 量配置的方式对所述 UE的多载波进行无线资源配置, 并将所述连接 重建消息发送给所述 UE。
3、 如权利要求 2所述的方法, 其特征在于, 所述网络侧设备在 连接重建消息中采用增量配置的方式对所述 UE的多载波进行无线资 源配置, 包括:
如果所述 UE重建时所选择小区位于 UE的载波配置集合之内, 且所述 UE保存了多载波状态下的其他成员载波 CC的配置信息时, 则所述网络侧设备将基于原配置信息采用增量配置的方式对所述 UE 的多载波进行无线资源配置。
4、 如权利要求 2所述的方法, 其特征在于, 所述网络侧设备在 连接重建消息中采用增量配置的方式对所述 UE的多载波进行无线资 源配置, 包括:
如果所述 UE重建时所选择小区位于 UE的载波配置集合之内, 且所述 UE保存了多载波状态下的其他 CC的缺省配置信息时, 则所 述网络侧设备将基于缺省配置信息采用增量配置的方式对所述 UE的 多载波进行无线资源配置。
5、 如权利要求 3或 4所述的方法, 其特征在于, 所述网络侧设 备在连接重建消息中采用增量配置的方式对所述 UE的多载波进行无 线资源配置, 包括:
如果所述 UE重建前后的主载波 PCC不同, 则所述网络侧设备 将重新指定 PCC和辅载波 SCC, 并基于原配置信息或者缺省配置信 息采用增量配置的方式对所述 UE的多载波进行无线资源配置; 如果所述 UE重建前后的 PCC相同, 则所述网络侧设备将直接 基于原配置信息或者缺省配置信息采用增量配置的方式对所述 UE的 多载波进行无线资源配置。
6、 如权利要求 5所述的方法, 其特征在于, 所述网络侧设备在 连接重建消息中采用增量配置的方式对所述 UE的多载波进行无线资 源配置, 包括:
如果所述 UE重建前后的 PCC不同, 所述网络侧设备需要释放 源 PCC的物理层上行控制信道配置信息, 并为新 PCC配置物理层上 行控制信道配置的信息。
7、 如权利要求 2所述的方法, 其特征在于, 所述网络侧设备在 连接重建消息中采用增量配置的方式对所述 UE的多载波进行无线资 源配置, 包括:
如果所述 UE重建时所选择小区不位于 UE的载波配置集合之内, 所述网络侧设备重新分配所述 UE的载波集合, 重新指定 PCC和辅 载波 SCC,并基于原配置信息或者缺省配置信息采用增量配置的方式 对所述 UE的多载波进行无线资源配置。
8、 如权利要求 2所述的方法, 其特征在于, 所述连接重建请求 消息包括: 无线资源控制协议 RRC连接重建请求消息; 所述连接重 建消息包括: RRC 连接重建消息; 所述缺省配置包括介质访问控制 MAC配置、 半持续调度 SPS配置和物理层配置; 所述物理层配置包 括以下内容中的一种或几种: 载波编号、 物理上行控制信道 PUCCH 配置、 物理下行共享信道 PDSCH配置、 物理上行共享信道 PUSCH 配置、 功控配置、 信道质量指示 CQI上报配置、 监测参考信号 SRS 配置、 参考信号 SR配置、 天线配置。
9、 一种网络侧设备, 其特征在于, 包括:
接收模块, 用于当 UE在多载波状态下触发连接重建过程时, 接 收来自所述 UE在所选择小区向网络侧设备发送的连接重建请求消 配置模块,用于根据所述接收模块接收的所述连接重建请求消息 对所述 UE的多载波进行无线资源配置。
10、 如权利要求 9所述的网络侧设备, 其特征在于, 所述配置模块具体用于,在连接重建消息中采用增量配置的方式 对所述 UE的多载波进行无线资源配置;
所述网络侧设备还包括: 发送模块, 用于将所述连接重建消息发 送给所述 UE。
11、 如权利要求 10所述的网络侧设备, 其特征在于,
所述配置模块具体用于, 如果所述 UE 重建时所选择小区位于 UE的载波配置集合之内, 且所述 UE保存了多载波状态下的其他成 员载波 CC的配置信息时, 将基于原配置信息采用增量配置的方式对 所述 UE的多载波进行无线资源配置;
如果所述 UE重建时所选择小区位于 UE的载波配置集合之内, 且所述 UE保存了多载波状态下的其他 CC的缺省配置信息时, 则将 基于缺省配置信息采用增量配置的方式对所述 UE的多载波进行无线 资源配置;
如果所述 UE重建时所选择小区不位于 UE的载波配置集合之内, 重新分配所述 UE的载波集合, 重新指定 PCC和辅载波 SCC, 并基 于原配置信息或者缺省配置信息采用增量配置的方式对所述 UE的多 载波进行无线资源配置。
12、 如权利要求 11所述的网络侧设备, 其特征在于,
所述配置模块具体用于, 如果所述 UE重建前后的主载波 PCC 不同, 则重新指定 PCC和 SCC, 并基于原配置信息或者缺省配置信 息采用增量配置的方式对所述 UE的多载波进行无线资源配置;
如果所述 UE重建前后的 PCC相同, 则直接基于原配置信息或 者缺省配置信息采用增量配置的方式对所述 UE的多载波进行无线资 源配置;
如果所述 UE重建前后的 PCC不同, 则释放源 PCC的物理层上 行控制信道配置信息, 并为新 PCC配置物理层上行控制信道配置的 信息。
13、 一种多载波系统的连接重建方法, 其特征在于, 包括: 如果所述 UE在多载波状态下触发连接重建过程时, 则在所选择 小区向网络侧设备发送连接重建请求消息; 由所述网络侧设备根据所 述连接重建请求消息对所述 UE的多载波进行无线资源配置。
14、 如权利要求 13所述的方法, 其特征在于, 在所选择小区向 网络侧设备发送连接重建请求消息, 包括:
如果所述 UE重建时所选择小区不位于 UE的载波配置集合之内, 所述 UE释放所有配置, 并回退到单载波工作状态向网络侧设备发送 连接重建请求消息; 或者, 所述 UE保留多载波配置信息, 在所选择 小区使用缺省配置向所述网络侧设备发送连接重建请求消息; 其中, 所述多载波配置信息为原配置信息或者缺省配置信息。
15、 如权利要求 13所述的方法, 其特征在于, 在所选择小区向 网络侧设备发送连接重建请求消息, 包括:
如果所述 UE采用快速重建过程时, 所述 UE在载波配置集合之 内选择重建小区, 如果所述载波配置集合之内没有合适的小区, 则在 所述载波配置集合之外选择重建小区,并在所选择的重建小区向网络 侧设备发送连接重建请求消息。
16、 如权利要求 15所述的方法, 其特征在于, 将所述连接重建 消息发送给所述 UE, 之后还包括: 所述 UE根据对所述 UE的多载 波进行无线资源配置的信息对低层进行重新配置,并利用新配置向所 述网络侧设备发送 RRC 连接重建完成消息; 其中, 所述低层包括 PDCP层、 RLC层、 MAC层及物理层。
17、 一种用户设备 UE, 其特征在于, 包括:
判断模块,用于判断 UE在多载波状态下是否触发连接重建过程; 发送模块, 用于当所述判断模块的判断结果为所述 UE在多载波 状态下触发连接重建过程时,在所选择小区向网络侧设备发送连接重 建请求消息; 由所述网络侧设备根据所述连接重建请求消息对所述 UE的多载波进行无线资源配置。
18、 如权利要求 17所述的 UE, 其特征在于,
所述发送模块具体用于, 如果所述 UE重建时所选择小区不位于 UE的载波配置集合之内, 则释放所有配置, 并回退到单载波工作状 态向网络侧设备发送连接重建请求消息; 或者, 在所选择小区使用缺 省配置向所述网络侧设备发送连接重建请求消息;
如果所述 UE采用快速重建过程时, 则在载波配置集合之内选择 重建小区, 如果所述载波配置集合之内没有合适的小区, 则在所述载 波配置集合之外选择重建小区,并在所选择的重建小区向网络侧设备 发送连接重建请求消息。
19、 如权利要求 17所述的 UE, 其特征在于, 还包括: 存储模块, 用于当所述判断模块的判断结果为所述 UE在多载波 状态下触发连接重建过程时, 存储多载波配置信息; 其中, 所述多载 波配置信息为原配置信息或者缺省配置信息;
配置模块, 用于根据所述网络侧设备对所述 UE的多载波进行无 线资源配置的信息以及所述多载波配置信息对低层进行重新配置,并 利用新配置向所述网络侧设备发送 RRC连接重建完成消息。
20、 一种多载波系统的连接重建方法, 其特征在于, 包括: 如果 UE在多载波状态下触发连接重建过程, 网络侧设备接收来 自所述 UE在所选择小区向所述网络侧设备发送的连接重建请求消 所述网络侧设备根据所述连接重建请求消息对所述 UE的单载波 进行无线资源配置。
21、 如权利要求 20所述的方法, 其特征在于, 所述网络侧设备 接收来自所述 UE在所选择小区向所述网络侧设备发送的连接重建请 求消息, 包括: 所述网络侧设备接收来自所述 UE在所选择小区使用 缺省配置向所述网络侧设备发送连接重建请求消息;
所述网络侧设备根据所述连接重建请求消息对所述 UE的单载波 进行无线资源配置, 包括: 所述网络侧设备在连接重建消息中采用增 量配置的方式对所述 UE的单载波进行无线资源配置, 并将所述连接 重建消息发送给所述 UE。
22、 如权利要求 21所述的方法, 其特征在于, 所述连接重建请 求消息包括: RRC连接重建请求消息; 所述连接重建消息包括: RRC 连接重建消息; 所述缺省配置包括 MAC配置、 SPS配置和物理层配 置; 所述物理层配置, 包括以下内容中的一种或几种: 载波编号、
PUCCH配置、 PDSCH配置、 PUSCH配置、 功控配置、 CQI上 4艮配 置、 SRS配置、 SR配置、 天线配置。
23、 一种网络侧设备, 其特征在于, 包括:
接收模块, 用于当 UE在多载波状态下触发连接重建过程时, 接 收来自所述 UE在所选择小区向网络侧设备发送的连接重建请求消 配置模块,用于根据所述接收模块接收的所述连接重建请求消息 对所述 UE的单载波进行无线资源配置。
24、 如权利要求 23所述的网络侧设备, 其特征在于,
所述配置模块具体用于,在连接重建消息中采用增量配置的方式 对所述 UE的单载波进行无线资源配置;
所述网络侧设备还包括: 发送模块, 用于将所述连接重建消息发 送给所述 UE。
25、 一种多载波系统的连接重建方法, 其特征在于, 包括: 如果所述 UE在多载波状态下触发连接重建过程时, 所述 UE在 所选择小区向网络侧设备发送连接重建请求消息; 由所述网络侧设备 根据所述连接重建请求消息对所述 UE的单载波进行无线资源配置。
26、 如权利要求 25所述的方法, 其特征在于, 所述 UE在所选 择小区向网络侧设备发送连接重建请求消息, 包括:
所述 UE在所选择小区使用缺省配置向所述网络侧设备发送连接 重建请求消息, 并释放多载波的配置信息, 回退到单载波状态。
27、 如权利要求 25所述的方法, 其特征在于, 所述 UE在所选 择小区向网络侧设备发送连接重建请求消息, 之后还包括:
所述 UE在单载波恢复信令无线承载 1SRB1 , 并经过 RRC连接 重配过程重新进入到多载波状态。
28、 一种用户设备 UE, 其特征在于, 包括:
判断模块,用于判断 UE在多载波状态下是否触发连接重建过程; 发送模块, 用于当所述判断模块的判断结果为所述 UE在多载波 状态下触发连接重建过程时,在所选择小区向网络侧设备发送连接重 建请求消息; 由所述网络侧设备根据所述连接重建请求消息对所述 UE的单载波进行无线资源配置。
29、 如权利要求 28所述的 UE, 其特征在于,
所述发送模块具体用于,在所选择小区使用缺省配置向所述网络 侧设备发送连接重建请求消息, 并释放多载波的配置信息, 回退到单 载波状态。
30、 如权利要求 29所述的 UE, 其特征在于, 还包括: 处理模块,用于在单载波恢复 SRB1 ,并经过 RRC连接重配过程 重新进入到多载波状态。
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| KR20220106038A (ko) | 2019-11-29 | 2022-07-28 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | 연결 재확립 방법, 단말 장치 및 저장 매체 |
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| CN1734976A (zh) * | 2004-08-14 | 2006-02-15 | 华为技术有限公司 | 实现用户设备无线资源控制的方法 |
| WO2009075341A1 (en) * | 2007-12-13 | 2009-06-18 | Nec Corporation | Radio link failure recovery |
| CN101500279A (zh) * | 2008-02-03 | 2009-08-05 | 中兴通讯股份有限公司 | 无线链路的恢复方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107113895A (zh) * | 2015-08-04 | 2017-08-29 | 华为技术有限公司 | 通信方法、网络侧设备和用户设备 |
| EP3322252A4 (en) * | 2015-08-04 | 2018-05-23 | Huawei Technologies Co., Ltd. | Communication method, network side device, and user equipment |
| US10470234B2 (en) | 2015-08-04 | 2019-11-05 | Huawei Technologies Co., Ltd. | Communication method, network-side device, and user equipment |
| WO2019228185A1 (zh) * | 2018-05-30 | 2019-12-05 | Oppo广东移动通信有限公司 | 一种无线资源控制连接方法及设备、计算机存储介质 |
| WO2021026936A1 (zh) * | 2019-08-15 | 2021-02-18 | 华为技术有限公司 | 一种处理回传链路发生链路失败的方法及装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102104982B (zh) | 2014-06-04 |
| CN102104982A (zh) | 2011-06-22 |
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