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WO2011150571A1 - 切换信令的传输方法、系统和基站 - Google Patents

切换信令的传输方法、系统和基站 Download PDF

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Publication number
WO2011150571A1
WO2011150571A1 PCT/CN2010/073530 CN2010073530W WO2011150571A1 WO 2011150571 A1 WO2011150571 A1 WO 2011150571A1 CN 2010073530 W CN2010073530 W CN 2010073530W WO 2011150571 A1 WO2011150571 A1 WO 2011150571A1
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WO
WIPO (PCT)
Prior art keywords
base station
cell
handover signaling
handover
parameter
Prior art date
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Application number
PCT/CN2010/073530
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English (en)
French (fr)
Inventor
邓云
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ZTE Corp
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ZTE Corp
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Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to PCT/CN2010/073530 priority Critical patent/WO2011150571A1/zh
Publication of WO2011150571A1 publication Critical patent/WO2011150571A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, system, and base station for transmitting handover signaling.
  • LTE-Advanced Long-Term Evolution advance
  • LTE-Advanced maintains the core of LTE for the evolution of Long-Term Evolution (LTE) systems. On this basis, it uses a series of technologies to expand the frequency domain and airspace to improve spectrum utilization and increase. System capacity and other purposes.
  • Radio Relay (Relay) technology is one of the technologies in LTE-Advanced. It aims to extend the coverage of the cell, reduce the dead zone in communication, balance the load, transfer the service in the hot spot, and save the user equipment (User Equipment, referred to as The transmit power of the UE, ie, the terminal).
  • FIG. 1 is a schematic structural diagram of a system for using a wireless relay technology according to the related art.
  • a new relay node is added between an original base station (Donor-eNB, or a donor base station) and a UE.
  • Relay-Node referred to as RN, or relay base station
  • these new RNs and Donor-eNBs are connected wirelessly.
  • the radio link between the Donor-eNB and the RN is called a backhaul link (represented by Un;), and the radio link between the RN and the UE is called an access link. Uu said).
  • Un backhaul link
  • the downlink data arrives at the Donor-eNB first, and then passes to the RN, which then transmits to the UE, and vice versa.
  • the RN has a relay function in a normal working state, that is, the RN has a relay function for data transmission between the RN and the base station (Donor-eNB) and between the RN and the UE it manages.
  • the relay function of the RN includes acquiring system information functions, measuring and measuring functions, switching functions, and relaying node-specific control channels (Relay-node Physical Dedicated Control). Channel, abbreviated as R-PDCCH) and a shared channel (Relay-node Physical Downlink Shared Channel, referred to as R-PDSCH, or Relay-node Physical Uplink Shared Channel, abbreviated as R-PUSCH) for data transmission, etc.
  • R-PDCCH Relay-node Physical Downlink Shared Channel
  • R-PUSCH Relay-node Physical Uplink Shared Channel
  • the RN also manages the cells belonging to the RN, and manages the UEs in the cell; between the RN and the UE, the relay function of the RN includes sending the system information function of the RN, and managing the UE.
  • the RN will establish an S1 interface and an X2 interface with the Donor-eNB under normal working conditions.
  • the S1 interface is established to communicate with the core network
  • the X2 interface is established to communicate with the Donor-eNB.
  • the RN makes a handover decision based on the measurement report of the UE, and the handover procedure includes the following steps: Step 101: The RN sends a handover to the adjacent target base station (or the relay node) through the X2 interface.
  • E-RAB Evolved Radio Access Bearer
  • E-RABs To Be Setup Item Including the established E-RAB identity, monthly service quality, transport layer configuration parameters, etc., UE Security Capabilities, UE's radio resource control context (RRC Context), UE access layer security
  • RRC Context radio resource control context
  • AS Security Information including the secret key KeNB* used by the UE and the network color code NCC value required for key generation).
  • the RRC Context includes: a radio access Capability Info, a measurement configuration of the UE in the source cell (herein referred to as an RN cell), a radio resource configuration of the UE in the source cell, and a security algorithm configuration of the UE in the source cell.
  • RN cell a measurement configuration of the UE in the source cell
  • C-RNTI Cell Radio Network Temporary Identifier
  • the Cell Radio Network Temporary Identifier (C-RNTI) of the source cell the Master Information Block of the source cell, the System Information Block 1 of the source cell, and the source cell System message block 2 (SystemInformationBlockType2), the number of antenna ports of the source cell, and so on.
  • C-RNTI Cell Radio Network Temporary Identifier
  • Step 102 After receiving the handover request, the target base station implements the access control, and allocates resources to the UE according to the context information of the UE in the handover request, and sends a handover command to the RN through the X2 interface.
  • Step 103 After receiving the handover command, the RN sends a handover command to the UE.
  • Step 104 The UE acquires synchronization with the target cell, initiates random access in the target cell, and sends handover complete signaling to the target cell. At this time, the UE switches to the target cell.
  • the inventor has found that in step 101, since the handover request signaling sent by the RN through the backhaul link contains information of many source cells, this part of the information usually does not change frequently.
  • a main object of the present invention is to provide a transmission scheme of handover signaling, which solves at least the problem of consuming interface resources in the handover signaling sent by the RN or the source base station in the related art. .
  • a transmission method of handover signaling is provided.
  • the method for transmitting handover signaling includes the following steps:
  • the host base station receives the handover signaling of the user equipment UE sent by the relay node RN, where the handover signaling carries the parameters configured by the RN for the UE;
  • the base station adds one or more of the following parameter information to the handover signaling: a parameter configured by the core network for the UE, a capability information of the UE itself, and/or a specific parameter of the cell administered by the RN; the host base station adds the parameter information.
  • the handover signaling is sent to the target base station; and the target base station allocates resources to the UE according to the received handover signaling after adding the parameter information, and returns a response of the handover signaling to the RN.
  • the specific parameters of the cell under the jurisdiction of the RN include at least one of the following: a primary information block of the cell under the jurisdiction of the RN, a system message block of the cell under the jurisdiction of the RN, a system message block of the cell under the jurisdiction of the RN, and a cell of the cell under the jurisdiction of the RN The number of antenna ports and the downlink frequency of the cell under the jurisdiction of the RN.
  • the parameter that the RN configures for the UE includes at least one of the following: a measurement configuration of the UE in the cell managed by the RN, a radio resource configuration of the UE in the cell under the RN, a security algorithm configuration of the UE in the cell managed by the RN, and a UE in the RN.
  • the parameters configured by the core network for the UE include the parameters of the established enhanced radio access E-RAB; and the capability information of the UE includes at least one of the following: the security capability of the UE, the security information of the UE access layer, UE radio access capability information and the maximum bit rate of the UE.
  • the receiving, by the host base station, the handover signaling of the UE that is sent by the RN includes: the host base station receives the handover signaling of the UE that is sent by the RN, where the handover signaling is Carrying the specific parameters of the cell under the jurisdiction of the changed RN; the host base station replaces the specific parameters of the cell reserved by the locally stored RN with the specific parameters of the cell under the changed RN.
  • the target base station allocates the handover signaling according to the received parameter information to the UE.
  • the resource includes: the target base station allocates resources to the UE according to the received handover signaling after adding the parameter information and the specific parameters of the locally reserved RN-managed cell.
  • the receiving, by the host base station, the handover signaling of the UE that is sent by the RN includes: the host base station receives the handover signaling of the UE that is sent by the RN, where the handover signaling is Carrying the specific parameters of the cell to be conditioned by the RN; before the target base station allocates resources to the UE according to the received handover signaling, the method further includes: the handover signal after the target base station receives the parameter information, The specific parameters of the cell under the jurisdiction of the RN replace the specific parameters of the cell managed by the locally stored RN.
  • the handover signaling is a handover request.
  • the handover signaling is a handover request.
  • the response of the target base station to the RN to return the handover signaling includes: the target base station sends the handover confirmation signaling to the RN; after the target base station returns the response of the handover signaling to the RN, the method further includes: after receiving the handover acknowledgement signaling, the RN The UE sends a handover command.
  • a method of transmitting handover signaling is also provided.
  • the method for transmitting handover signaling includes the following steps:
  • the base station receives the handover signaling of the user equipment UE sent by the relay node RN, where the handover signaling carries one or more of the following parameter information.
  • the specific parameters of the cell under the jurisdiction of the RN include at least one of the following: a primary information block of the cell under the jurisdiction of the RN, a system message block of the cell under the jurisdiction of the RN, a system message block of the cell under the jurisdiction of the RN, and a cell of the cell under the jurisdiction of the RN The number of antenna ports and the downlink frequency of the cell under the jurisdiction of the RN.
  • the parameter that the RN configures for the UE includes at least one of the following: a measurement configuration of the UE in the cell managed by the RN, a radio resource configuration of the UE in the cell under the RN, a security algorithm configuration of the UE in the cell managed by the RN, and a UE in the RN.
  • the parameters configured by the core network for the UE include the parameters of the established enhanced radio access E-RAB; and the capability information of the UE includes at least one of the following: the security capability of the UE, the security information of the UE access layer, UE radio access capability information and the maximum bit rate of the UE.
  • the base station receiving the handover signaling of the UE sent by the RN includes: receiving, by the base station, handover signaling of the UE sent by the RN, where the handover signal The command carries a specific parameter of the cell under the changed RN; the base station replaces the specific parameter of the locally-held RN-managed cell with the specific parameter of the changed RN-managed cell. Further, the base station receives the handover signaling of the UE that is sent by the RN, and when the handover signaling carries the parameter that the RN is configured for the UE, the base station performs the handover signaling and the specific parameters of the locally reserved RN-managed cell.
  • Allocating resources for the UE includes: The base station allocates resources to the UE according to the received handover signaling, the parameters of the locally saved core network configured for the UE, the locally saved capability information of the UE, and the specific parameters of the locally reserved RN-managed cell. Further, when the RN sends the handover signaling to the base station through the X2 interface, the handover signaling is a handover request. When the RN sends the handover signaling to the base station through the S1 interface, the handover signaling is a handover requirement. In order to achieve the above object, in another aspect of the present invention, a method for transmitting handover signaling is also provided.
  • the method for transmitting handover signaling includes the following steps:
  • the target base station receives the handover signaling of the user equipment UE sent by the source base station, where the handover signaling carries the parameters configured by the source base station for the UE, and the core network is the UE.
  • the configured parameters and the capability information of the UE itself the target base station allocates resources to the UE according to the received handover signaling and the locally saved specific parameters of the cell managed by the source base station, and returns a response of the handover signaling to the source base station.
  • the specific parameters of the cell under the jurisdiction of the source base station include at least one of the following: a primary information block of a cell under the jurisdiction of the source base station, a system message block of a cell under the jurisdiction of the source base station, and a system message block 2 of the cell under the jurisdiction of the source base station.
  • the parameter that the source base station configures for the UE includes at least one of the following: a measurement configuration of the UE in the cell managed by the source base station, a radio resource configuration of the UE in the cell under the jurisdiction of the source base station, and a UE in the cell under the jurisdiction of the source base station.
  • the security algorithm configuration the cell temporary network identifier C-RNTI of the UE in the cell under the jurisdiction of the source base station, the reconstruction information of the UE in the cell under the jurisdiction of the target base station, and the activation time of the UE in the 'J, the area under the jurisdiction of the source base station;
  • the configured parameters include the established enhanced wireless access
  • the parameters of the E-RAB and the capability information of the UE include at least one of the following: a security capability of the UE, security information of the UE access layer, UE radio access capability information, and a maximum bit rate of the UE.
  • the target base station receives the handover signaling of the UE sent by the source base station, where: the target base station receives the handover signaling of the UE sent by the source base station, where The signaling carries a specific parameter of the changed cell of the source base station; the target base station replaces the specific parameter of the locally-held cell of the source base station with the specific parameter of the changed cell of the source base station.
  • a transmission system for handover signaling is provided.
  • the transmission system of the handover signaling includes a host base station and a target base station, wherein the host base station includes: a first receiving module, configured to receive handover signaling of the user equipment UE sent by the relay node RN, where the handover signal
  • the parameter is configured to carry the parameter that the RN is configured for the UE
  • the adding module is configured to add one or more of the following parameter information to the handover signaling: a parameter configured by the core network for the UE, a capability information of the UE itself, and/or an RN a specific parameter of the cell; and a first sending module, configured to send the switching signaling after adding the parameter information to the target base station
  • the target base station includes: a second allocating module, configured to: switch the signal according to the received parameter information
  • a base station includes: a third receiving module, configured to receive, by the relay node RN, handover signaling of the user equipment UE, where the handover signaling carries one or more of the following parameter information: The configured parameters, and/or the parameters configured by the core network for the UE and the capability information of the UE itself, and the third allocation module, configured to allocate the UE according to the received handover signaling and the specific parameters of the locally reserved RN-managed cell And a third sending module, configured to send a response of the handover signaling to the RN.
  • a base station is also provided.
  • the base station includes: a fourth receiving module, configured to receive a handover signaling of a user equipment UE that is sent by a source base station, where the handover signaling carries a parameter configured by the source base station for the UE, and a parameter configured by the core network for the UE And the capability information of the UE; the fourth allocation module, configured to allocate resources to the UE according to the received handover signaling and the locally saved specific parameters of the cell managed by the source base station; and the fourth sending module, configured to send to the source base station Switch the response of the signaling.
  • the method of the present invention is used in the handover signaling sent by the RN to the base station, and does not include the specific parameters of the source cell (ie, the cell under the jurisdiction of the RN), and the handover signaling sent by the RN or the source base station in the related art is not carried in the related art.
  • the frequently changed source cell information leads to the problem of consuming interface resources, effectively utilizing the bandwidth resources of the interface, and reducing the number of bits of handover signaling between interfaces, thereby optimizing system performance and improving transmission efficiency.
  • FIG. 1 is a schematic diagram of a system structure of a wireless relay technology according to the related art
  • FIG. 2 is a flowchart of a method for transmitting handover signaling according to an embodiment of the present invention
  • FIG. 3 is another flowchart according to the present invention.
  • FIG. 4 is a flowchart of a method for transmitting handover signaling according to still another embodiment of the present invention;
  • FIG. 1 is a schematic diagram of a system structure of a wireless relay technology according to the related art
  • FIG. 2 is a flowchart of a method for transmitting handover signaling according to an embodiment of the present invention
  • FIG. 3 is another flowchart according to the present invention
  • FIG. 4 is a flowchart of a method for transmitting handover signaling according to still another embodiment of the present invention
  • FIG. 1 is a schematic diagram of a system structure of a wireless relay technology according to the related art
  • FIG. 2 is a flowchart of a method for transmitting handover signaling according to
  • FIG. 5 is a diagram of a transmission system for handover signaling according to an embodiment of the present invention
  • Figure 6 is a block diagram showing the structure of a base station according to an embodiment of the present invention
  • Figure 7 is a block diagram showing the structure of a base station according to another embodiment of the present invention
  • Figure 8 is a diagram showing a handover of a UE under the RN to a base station to which the RN belongs according to an embodiment of the present invention
  • FIG. 9 is a schematic flowchart of a UE switching to another neighboring base station according to an embodiment of the present invention
  • FIG. 10 is a schematic flowchart of a UE switching between adjacent base stations according to an embodiment of the present invention.
  • the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Since the ten-party architecture used after the introduction of the relay node RN has been determined, the S1 interface signaling between all the core networks and the RN needs to be forwarded by the host base station (in this case, the host base station implements the proxy proxy), therefore, The host base station can utilize the forwarded S1 interface signaling to reduce the content included in the handover request, thereby effectively saving resources of the backhaul link air interface.
  • 2 is a flowchart of a method for transmitting handover signaling according to an embodiment of the present invention.
  • Step S202 The host base station receives the user equipment UE sent by the relay node RN. Switching signaling, where the handover signaling carries a parameter that the RN configures for the UE; Step S204, the host base station adds one or more of the following parameter information to the handover signaling: a parameter configured by the core network for the UE, and the UE itself The capability information, the specific parameter of the cell under the jurisdiction of the RN; Step S206, the host base station sends the handover signaling after adding the parameter information to the target base station; and in step S208, the target base station performs the handover signaling after the received parameter information is added.
  • a resource is allocated to the UE, and a response to the handover signaling is returned to the RN.
  • the handover signaling sent by the RN to the base station does not include the specific parameter of the cell under the RN (ie, the source cell-specific parameter), and the handover signaling sent by the RN in the related art is solved.
  • the information of the source cell that does not change frequently causes the problem of the air interface resource, effectively utilizes the air interface resource of the backhaul link, and reduces the number of bits of the handover signaling between the interfaces, thereby optimizing the performance of the system and improving the performance. Transmission efficiency. It should be noted that the method can be applied to frequency division duplex (
  • the host base station after receiving the handover signaling sent by the relay node RN, the host base station adds some user equipment UE-specific parameters and/or source cell specific parameters to the handover signaling, and the host base station targets the target.
  • the base station sends a handover signaling that joins a part of the user equipment-specific parameters (ie, the core network is configured by the UE and the UE's own capability information) and/or the source cell-specific parameters; after receiving the handover signaling, the target base station is the user.
  • the device allocates resources and then returns a handover response to the relay node through the donor base station.
  • some user equipment specific parameters may include one or more of the following: parameters of the established E-RAB, security capabilities of the UE, security information of the UE access layer, UE radio access capability information, maximum bits of the UE Rate, reconstruction information of the UE in the cell under the jurisdiction of the target base station.
  • the source cell specific parameters include one or more of the following: a primary information block of the source cell, a system message block of the source cell, a system message block of the source cell, a number of antenna ports of the source cell, and a source cell. Downstream frequency.
  • the specific parameter of the cell under the jurisdiction of the RN includes at least one of the following: a primary information block of the cell under the jurisdiction of the RN, a system message block of the cell under the jurisdiction of the RN, a system message block of the cell under the jurisdiction of the RN, and a cell under the jurisdiction of the RN.
  • the number of antenna ports and the downlink frequency of the cell under the jurisdiction of the RN. The method can be used to clear the specific parameters of the cell under the RN in the handover signaling of the UE that is sent by the RN to the host base station, and save the specific parameters of the cell under the RN in the host base station, thereby saving the air interface resources of the system.
  • the parameter that the RN configures for the UE includes at least one of the following: a measurement configuration of the UE in the cell managed by the RN, a radio resource configuration of the UE in the cell under the RN, a security algorithm configuration of the UE in the cell under the RN, and the UE in the RN.
  • the cell temporary network identifier C-RNTI of the cell under the jurisdiction the reconstruction information of the UE in the cell managed by the target base station, and the activation time of the UE in the cell under the jurisdiction of the RN.
  • the parameters configured by the core network for the UE include the parameters of the established enhanced radio access E-RAB; and the capability information of the UE itself includes at least one of the following: security capability of the UE, security information of the UE access layer, UE radio access capability information and the maximum bit rate of the UE.
  • the handover signaling in step S202, the handover signaling carries a specific parameter of the cell under the changed RN; and the host base station uses the specific cell of the changed RN.
  • the parameter replaces the specific parameters of the cell managed by the locally stored RN.
  • the relay node RN includes, after the specific parameter of the source cell is changed, the handover signaling sent to the donor base station, including some or all of the source cell-specific parameters after the change.
  • the preferred embodiment can effectively update the specific parameters of the source cell, so that the specific parameters of the current source cell are carried in the handover signaling, so that the processing of the target base station improves the effectiveness of the system.
  • the parameter information added by the host base station in the handover signaling is the parameter configured by the core network for the UE and the capability information of the UE itself
  • the target base station switches according to the received parameter information. Signaling and specific parameters of the locally maintained RN-managed cell allocate resources to the UE.
  • the target base station saves the specific parameters of the active cell. If the specific parameter does not change, the specific parameter does not need to be carried in each handover signaling, thereby improving the processing capability of the system.
  • the handover signaling in step S202, the handover signaling carries the specific parameter of the changed cell of the RN; in step S208, the target base station receives the parameter information of the addition.
  • the subsequent handover signaling replaces the specific parameters of the locally reserved RN-managed cell with the specific parameters of the changed RN-managed cell.
  • the specific parameter in the target base station is updated by carrying the changed specific parameter in the handover signaling sent by the RN to the host base station, thereby improving the accuracy of the system.
  • the handover signaling may include a handover request and a handover requirement; the handover response may include a handover request acknowledgement and a handover command.
  • the handover signaling is a handover request; and when the RN sends the handover signaling to the donor base station through the S1 interface, the handover signaling is a handover requirement.
  • the target base station may send handover confirmation signaling to the RN; after step S208, after receiving the handover acknowledgement signaling, the RN sends a handover command to the UE.
  • the host base station may implement access control according to the information contained in the handover signaling and the partial user equipment-specific parameters and/or source cell-specific parameters that have been obtained, and allocate resources for the user equipment. , return a handover response to the relay node.
  • FIG. 3 is a flowchart of a method for transmitting handover signaling according to another embodiment of the present invention. As shown in FIG.
  • Step S302 A base station receives a user equipment UE sent by a relay node RN.
  • the handover signaling where the handover signaling carries one or more of the following parameter information: a parameter configured by the RN for the UE, a parameter configured by the core network for the UE, and capability information of the UE itself;
  • Step S304 the base station receives the The handover signaling and the specific parameters of the locally reserved cell of the RN are allocated resources for the UE, and the response of the handover signaling is returned to the RN.
  • the source cell is not included in the handover signaling sent by the RN to the base station.
  • the specific parameter of the cell (ie, the source cell) of the RN includes at least one of the following: a primary information block of the cell under the jurisdiction of the RN, a system message block of the cell under the jurisdiction of the RN, and a system message block 2 of the cell under the jurisdiction of the RN.
  • the method may be that the specific parameters of the source cell may not be carried in the handover signaling of the UE that is sent by the RN to the base station, and the specific parameters of the active cell are saved in the base station, thereby saving air interface resources of the system.
  • the parameter that the RN configures for the UE includes at least one of the following: a measurement configuration of the UE in the cell managed by the RN, a radio resource configuration of the UE in the cell under the RN, a security algorithm configuration of the UE in the cell under the RN, and the UE in the RN.
  • the cell temporary network identifier C-RNTI of the cell under the jurisdiction the reconstruction information of the UE in the cell managed by the target base station, and the activation time of the UE in the cell under the jurisdiction of the RN.
  • the parameters configured by the core network for the UE include the parameters of the established enhanced radio access E-RAB; and the capability information of the UE itself includes at least one of the following: security capability of the UE, security information of the UE access layer, UE radio access capability information and the maximum bit rate of the UE.
  • the handover signaling carries the specific parameter of the changed cell of the RN; and the base station uses the specific parameter of the changed cell of the RN. Replace the specific parameters of the cell managed by the locally saved RN.
  • the preferred embodiment can effectively update the specific parameters of the source cell, so that the specific parameters of the current source cell are carried in the handover signaling, which improves the effectiveness and accuracy of the system.
  • the base station configures the parameter according to the received handover signaling, the locally saved core network, and the local The saved UE's own capability information and the locally stored specific parameters of the RN-managed cell allocate resources for the UE.
  • the base station stores the parameters configured by the core network for the UE and the capability information of the UE, and does not need to carry the two types of parameters in the handover signaling sent by the RN to the base station, thereby improving the processing capability of the system.
  • the handover signaling is a handover request; and when the RN sends the handover signaling to the base station through the S1 interface, the handover signaling is a handover requirement.
  • FIG. 4 is a flowchart of a method for transmitting handover signaling according to another embodiment of the present invention. As shown in FIG. 4, the method includes the following steps: Step S402: The target base station receives the user equipment UE sent by the source base station.
  • Step S404 the target base station according to the received handover signaling and the locally saved source
  • the specific parameters of the cell under the control of the base station allocate resources to the UE, and return a response of the handover signaling to the source base station.
  • the handover signaling sent by the source base station to the target base station does not include the specific parameter of the source cell (ie, the cell under the jurisdiction of the source base station), and the handover signaling sent by the source base station in the related art is solved.
  • the specific parameter of the cell under the jurisdiction of the source base station includes at least one of the following: a primary information block of the cell under the jurisdiction of the source base station, a system message block of the cell under the jurisdiction of the source base station, and a system message block 2 of the cell under the jurisdiction of the source base station.
  • the method may be that the specific signaling of the cell under the jurisdiction of the source base station may not be carried in the handover signaling of the UE sent by the source base station to the target base station, and the specific parameters of the cell under the active base station are saved in the target base station, thereby saving the system.
  • Interface resource Preferably, the parameters configured by the source base station for the UE include at least one of the following: a measurement configuration of the UE in the cell managed by the source base station, a radio resource configuration of the UE in the cell under the jurisdiction of the source base station, and a security algorithm configuration of the UE in the cell under the jurisdiction of the source base station.
  • the radio access carries the parameters of the E-RAB; and the capability information of the UE itself includes at least one of the following: the security capability of the UE, the security information of the UE access layer, the UE radio access capability information, and the maximum bit rate of the UE.
  • the target base station receives the handover signaling of the UE sent by the source base station, where the target base station receives the UE sent by the source base station, where the specific parameter of the cell under the control of the source base station changes.
  • the handover signaling where the handover signaling carries the specific parameter of the changed cell of the source base station; the target base station replaces the specific parameter of the locally reserved source base cell with the specific parameter of the changed cell of the source base station .
  • the preferred embodiment can effectively update the specific parameters of the source cell, so that the specific parameters of the current source cell are carried in the handover signaling, which improves the effectiveness and accuracy of the system.
  • FIG. 5 is a schematic diagram of a transmission system for handover signaling according to an embodiment of the present invention.
  • the system includes a host base station 52 and a target base station 54.
  • the host base station 52 includes: a first receiving module 522, configured to: Receiving the handover signaling of the user equipment UE sent by the relay node RN, where the handover signaling carries the parameter that the RN is configured for the UE; the adding module 524 is coupled to the first receiving module 522, and is used in the handover signaling. Adding one or more of the following parameter information: a parameter configured by the core network for the UE, capability information of the UE itself, and a specific parameter of the cell under the jurisdiction of the RN; and a first sending module 526 coupled to the adding module 524 for adding The switching information after the parameter information is sent to the target base station.
  • the target base station 54 includes: a second allocation module 542, configured to allocate resources to the UE according to the received handover signaling after the parameter information is added; and a second sending module 544, coupled The second allocation module 542 is configured to send a response of the handover signaling to the RN.
  • FIG. 6 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG.
  • the base station 60 includes: a third receiving module 62, configured to receive handover signaling of a user equipment UE sent by a relay node RN, where The handover signaling carries one or more of the following parameter information: a parameter configured by the RN for the UE, a parameter configured by the core network for the UE, and capability information of the UE itself; a third allocation module 64, coupled to the third receiving module 62, And configured to allocate resources to the UE according to the received handover signaling and a specific parameter of the locally reserved cell of the RN; and the third sending module 66 is coupled to the third allocation module 64, and configured to send the response of the handover signaling to the RN. .
  • the base station 70 includes: a fourth receiving module 72, configured to receive handover signaling of a user equipment UE sent by a source base station, where The handover signaling carries the parameters configured by the source base station for the UE, the parameters configured by the core network for the UE, and the capability information of the UE itself.
  • the fourth allocation module 74 is coupled to the fourth receiving module 72, configured to receive, according to the received handover signaling, The specific parameters of the cell managed by the source base station are allocated resources for the UE; and the fourth sending module 76 is coupled to the fourth allocating module 74 for sending a response of the handover signaling to the source base station.
  • the base station 1 accesses m relays in the cell 1 under the jurisdiction of the base station 1 Nodes, these relay nodes are called RN_1, RN_2...RN_m, respectively. These relay nodes are in normal working condition and can provide services for their covered user equipment.
  • the S1 and X2 interfaces are established with the base station 1, and the S1 interface is used to transmit the signaling interaction between the relay node and the core network; the X2 interface is used for the relay node and the base station ( Signaling interaction between base station 1 or other neighboring base stations.
  • Multiple user equipments covered by the cell under the jurisdiction of RN_1 are connected and a service is established.
  • One of the user equipments (UE1) sends a measurement 4 report to the RN_1 because of the mobile, reporting that the signal quality of the neighboring cell (cell 1) is higher than the signal quality of the current serving cell by a predetermined offset.
  • RN_1 makes a handover decision and needs to handover UE1 to cell 1 (target cell).
  • Step 802 The RN 1 sends a handover to the base station 1.
  • a request (Handover Request), where the handover request includes parameters specific to the UE1, including parameters of the established E-RAB, security capabilities of the UE1, security information of the UE1 access layer, and UE1 radio access capability information.
  • UE1 in the source cell (jt ⁇ refers to the RN_1 cell) measurement configuration, UE1 in the source cell radio resource configuration, UE1 in the source cell security algorithm configuration, UE1 in the source cell cell temporary network identifier C-RNTK UE1 maximum bit
  • the source cell-specific parameters may not be included in the handover request, for example, the primary information block of the source cell, the system message block of the source cell, the system message block of the source cell, the number of antenna ports of the source cell, and the number of antenna ports of the source cell.
  • the downlink frequencies of the source cell are not included in the handover request. Because the parameters of the source cell are not changed frequently, once the base station 1 obtains the parameters, if the part of the parameters does not change, the part of the parameters may not be carried in the handover request to save the air interface resources of the backhaul link and improve the efficiency of the air interface.
  • the base station 1 can obtain the part of the parameter information through the O&M (Operation and Maintenance) server, and can also obtain the part of the parameter information by the RN_1 in the previous handover request sent by other UEs.
  • the other embodiments are the same. No longer.
  • Step 804 after receiving the handover request, the base station 1 performs the UE1 specific parameter included in the handover request, and implements access control according to the previously obtained source cell specific parameters, allocates resources for the UE1, and sends a handover request to the RN-1. Confirm (Accounting Request Acknowledge) signaling.
  • Step 806 After receiving the handover request acknowledgement, the RN_1 sends a handover command to the UE1.
  • the RN 1 sends a handover command through RRC Connection Reconfiguration, and includes mobility control information in the RRC connection reconfiguration (mobilityControlInfo). ).
  • Step 808 After receiving the handover command, UE1 obtains synchronization with the target cell, initiates random access in the target cell, and sends handover completion signaling (RRC Connection Reconfiguration Complete) to the target cell. So far, UE1 completes the target cell.
  • the handover request sent by the RN_1 to the base station 1 does not include the source cell specific parameter, which is applicable to the scenario where the source cell specific parameter has not changed. If this part of the parameter changes, RN_1 needs to be in this.
  • the first handover request sent to the base station 1 includes the source cell-specific parameters. After receiving the parameters, the base station 1 needs to replace the originally saved parameters and apply it to the handover process.
  • the configuration of the user equipment parameter is not included in the handover request sent by the RN_1 for the other UEs.
  • the handover request sent by the RN1 in the embodiment only includes the UE-specific parameters, excluding the parameters. Source cell specific parameters.
  • the method described in this embodiment may also be applied, that is, the handover requirement includes the UE-specific parameter, and does not include the source cell-specific parameter.
  • the first embodiment provides a method for optimizing handover signaling, that is, the handover request sent by the RN includes only UE-specific parameters, and the handover signaling transmitted through the backhaul link can greatly reduce the number of bits, thereby saving air interface. Valuable resources reduce the number of bits of switching signaling between interfaces and improve transmission efficiency.
  • the cell (cell 1) to which the RN_1 accesses the base station 1 (referring to any base station that is allowed to access the relay node) is in a normal working state, and the RN_1 and the base station 1 establish an S1 interface and an X2 interface.
  • the UE under the coverage of the cell under the jurisdiction of RN_1 is in the connected state and the service is established. Due to the UE's mobility, the UE reports to RN_1 a measurement report that the signal quality of the neighboring cell (cell 2, cell under the base station 1) is higher than the signal quality of the serving cell by a predetermined offset.
  • the RN_1 After receiving the measurement report of the UE, the RN_1 makes a handover decision, and needs to handover the UE to the cell 2 (target cell), and the handover procedure is similar to that described in the example 1, except that the handover request sent by the RN_1 to the base station 1 is only Contains some UE-specific parameters, and does not include parameters specific to the source cell (the cell under the jurisdiction of RN_1).
  • a part of the UE-specific parameters may refer to parameters configured by the RN_1 for the UE, including a measurement configuration of the UE in the source cell (refer to the RN_1 cell), a radio resource configuration of the UE in the source cell, and a security algorithm of the UE in the source cell.
  • the other UE-specific parameters refer to parameters configured by the core network for the UE, and the capability information of the UE itself.
  • the parameters include the established E-RAB parameters, the security capabilities of the UE, the security information of the UE access layer, and the UE. Radio access capability information, the maximum bit rate of the UE.
  • the base station 1 can analyze the signaling sent by the core network to the RN_1. For example, when the UE establishes a certain service, the initial context setup request sent by the core network to the RN_1 by the base station 1 includes the parameters configured by the core network for the UE, and the capability information of the UE itself, when the base station 1 forwards the information. When the initial context establishment request is made, the base station 1 can learn the parameters configured by the core network for the UE and the capability information of the UE itself. The base station 1 stores this part of information.
  • the base station 1 When the base station 1 receives the handover request sent by the RN_1 about the UE, according to some of the UE-specific parameters included in the handover request, other UE-specific parameters saved, and the previously obtained The source cell specific parameters, implement access control, allocate resources for the UE, and send a handover request acknowledgement to the RN_1. The RN_1 then sends a handover command to the UE to handover the UE to the target cell.
  • the reconstruction information of the UE in the cell managed by the base station 1 is included in the handover request, and the reconstruction information is generated by the RN_1.
  • the base station 1 can analyze the S1 signaling sent by the core network to the RN_1, the base station 1 can learn the encryption key and the encryption algorithm used by the UE, and the base station 1 obtains the RN_1 allocated to the UE through the handover request.
  • the base station 1 can calculate the reconstruction information of the UE in the cell under the jurisdiction of the base station 1 (the calculation of the reconstruction information is the same as the prior art, and is not mentioned here). Therefore, the handover request may not include the location. Reconstruct the information.
  • the target base station can completely ignore the parameters configured by the source base station for the UE, and reconfigure the complete parameters for the UE.
  • the switch request may not be included.
  • the measurement configuration of the UE in the source cell and the radio resource configuration of the UE in the source cell. Therefore, the part of the UE-specific parameters included in the handover request at this time refers to the security algorithm configuration of the UE in the source cell, the cell temporary network identifier C-RNTI of the UE in the source cell, and the activation time of the UE in the source cell. It can be seen that when only a part of the UE-specific parameters are included in the handover request sent by the RN, the handover signaling transmitted through the backhaul link can reduce the number of transmission bits, thereby saving air interface resources.
  • the cell (cell 1) to which the RN_1 accesses the base station 1 (referring to any base station that is allowed to access the relay node) is in a normal working state, and the RN_1 and the base station 1 establish an S1 interface and an X2 interface.
  • the UE under the coverage of the cell under the jurisdiction of RN_1 is in the connected state and the service is established. Due to the UE's mobility, the UE has a higher signal quality than the signal quality of the serving cell to the signal quality of the serving cell to the neighboring cell (cell 2, the cell under the base station 2, and the X2 interface between the base station 2 and the base station 2) on the RN_1.
  • Measurement report is a higher signal quality than the signal quality of the serving cell to the signal quality of the serving cell to the neighboring cell (cell 2, the cell under the base station 2, and the X2 interface between the base station 2 and the base station 2) on the RN_1.
  • FIG. 9 is a schematic diagram of a process for a UE to switch to another neighboring base station according to an embodiment of the present invention.
  • the transmission process of the handover signaling may include the following steps: Step 902: The RN 1 sends the signal to the base station 1. Handover Request, in which all or part of the UE-specific parameters are included in the handover request, and the source cell-specific parameters are not included.
  • Step 904 After receiving the handover request, the base station 1 needs to forward the signaling to the base station 2, and the base station 1 can resolve the relay according to the protocol structure adopted after the relay node is introduced.
  • the X2/S1 interface signaling sent by the node therefore, the base station 1 can learn the target cell identity information in the handover request, and the base station 1 finds that the source cell-specific parameter is not included in the handover request signaling, and the base station 1 needs to The source cell specific parameters are added to the handover request.
  • the UE-specific parameters when only a part of the UE-specific parameters are included in the handover request, that is, only the measurement configuration of the UE in the source cell (here, the RN_1 cell), the radio resource configuration of the UE in the source cell, and the UE in the source are included.
  • the security algorithm configuration of the cell, the cell temporary network identifier of the UE in the source cell, the reestablishment information of the C-RNTK UE in the cell under the base station 2, the activation time of the UE in the source cell (InactiveTime), and the base station 1 needs to be in the handover request.
  • the parameters include the established E-RAB parameters.
  • the base station 1 may initially establish a service at the UE, or obtain a parameter configured by the core network for the UE, and capability information of the UE itself when the UE switches from the other cell to the cell 1.
  • Step 906 The base station 1 sends a handover request to the base station 2, where the signaling includes source cell specific parameters and UE specific parameters.
  • Step 908 After receiving the handover request, the base station 2 implements access control, allocates resources for the UE, and sends Handover Request Acknowledge signaling to the base station 1.
  • Step 910 After receiving the handover request acknowledgement, the base station 1 learns that the acknowledgment signaling is sent to the RN_1 according to the X2 application layer identifier (Old eNB UE X2AP ID) of the source base station, and the base station 1 sends the acknowledgment signaling to the RN_1. Switch request confirmation.
  • Step 912 After receiving the handover request acknowledgement, the RN 1 sends a handover command to the UE. For example, the RN 1 may transmit a handover command through RRC Connection Reconfiguration, and include mobility control information (mobilityControlInfo) in the RRC connection reconfiguration.
  • mobilityControlInfo mobility control information
  • Step 914 After receiving the handover command, the UE obtains synchronization with the target cell, initiates random access in the target cell, and sends a handover complete signaling (RRC Connection Reconfiguration Complete) to the target cell to notify the target cell that the UE has completed the target.
  • the handover request sent by the RN_1 to the base station 1 does not include a source cell specific parameter, which is applicable to a scenario in which the source cell specific parameter has not changed. If the part of the parameter changes, the RN_1 needs to change in this part of the parameter. After the change or the change, the first handover request sent to the base station 1 includes the source cell-specific parameters, and after receiving the partial parameters, the base station 1 needs to replace the originally saved parameters.
  • the base station 2 After receiving the handover request sent by RN_1, the updated source cell specific parameters are used. It should be noted that, in this embodiment, the base station 2 is a macro base station, and if the base station 2 is also a relay node belonging to the base station 1, the method is also applicable.
  • Example 4
  • the flow of the handover signaling may include the following steps: Step 1002: The base station 1 sends a handover request to the base station 2, Only UE-specific parameters are included in the handover request, and no cell-specific parameters are included. Step 1004: After receiving the handover request, the base station 2 allocates resources to the UE according to the UE-specific parameters and the stored parameters of the source cell (cell 1), and returns a handover request acknowledgement to the base station 1. In a specific implementation process, the base station 2 may obtain the cell 1 specific parameter by using the handover request of the UE that has been previously switched from the cell 1, or may transmit the cell specific to the neighboring base station to the neighboring base station by using the newly added X2 interface signaling. Parameters.
  • the base station 1 may not carry the cell specific parameter in the handover request. If the part of the parameter changes, the base station 1 needs to include the source cell specific parameter in the first handover request (the source cell is the cell 1) sent to the base station 2 after the part of the parameter change, and the base station 2 receives the parameter. After that, the originally saved parameters need to be replaced and applied to the configuration of the user equipment parameters in the handover process. After that, the handover request sent by the base station 1 to other UEs (located in the cell 1) may not carry the source cell specific parameters.
  • Step 1006 After receiving the handover request acknowledgement, the base station 1 sends a handover command to the UE.
  • the base station 1 may transmit a handover command through RRC Connection Reconfiguration, and include mobility control information (mobilityControlInfo) in the RRC connection reconfiguration.
  • mobilityControlInfo mobility control information
  • Step 1008 After receiving the handover command, the UE obtains synchronization with the target cell, initiates random access in the target cell, and sends handover completion signaling (RRC Connection Reconfiguration Complete) to the target cell, and the UE completes to the target cell.
  • the UE is switched through the X2 interface.
  • the UE if there is no X2 interface between the base station 1 and the base station 2, the UE needs to be switched through the S1 interface, and the base station 1
  • the signaling sent to the core network is the signaling of the handover requirement, and only the UE-specific parameters may be included in the signaling.
  • the updated source is included in the handover requirement only when the source cell-specific parameters change or change. Cell specific parameters.
  • the embodiment of the present invention is a technical solution for optimizing handover signaling transmission, which can be applied to an FDD system and a TDD system, and solves the problem that the handover signaling sent by the RN carries the infrequently changed source cell in the related art.
  • the information causes the problem of the interface resources, effectively utilizes the bandwidth resources of the interface, and reduces the number of bits of the handover signaling between the interfaces, thereby optimizing the performance of the system and improving the transmission efficiency.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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Abstract

本发明公开了一种切换信令的传输方法、系统和基站,该方法包括以下步骤:宿主基站接收到中继节点RN发送的用户设备UE的切换信令,其中,切换信令中携带RN为UE配置的参数;宿主基站在切换信令中增加以下参数信息中的一个或多个:核心网为UE配置的参数、UE自身的能力信息、RN所辖小区的特定参数;宿主基站将增加参数信息后的切换信令发送给目标基站;以及目标基站根据接收到的增加参数信息后的切换信令为UE分配资源,并向RN返回切换信令的响应。通过本发明降低了接口之间切换信令的比特数,从而优化了系统的性能,提高了传输效率。

Description

切换信令的传输方法、 系统和基站 技术领域 本发明涉及通信领域, 尤其涉及一种切换信令的传输方法、 系统和基站。 背景技术 为了满足日益增长的大带宽高速移动接入的需求, 第三代合作伙伴计划
( Third Generation Partnership Projects , 简称 3 GPP ) 4舞出高级长期演进 ( Long-Term Evolution advance , 简称 LTE- Advanced ) 标准。 LTE- Advanced 对于长期演进 ( Long-Term Evolution , 简称 LTE ) 系统的演进保留了 LTE的 核心, 在此基础上又釆用一系列技术对频域、 空域进行扩充, 以达到提高频 谱利用率、 增加系统容量等目的。 无线中继(Relay )技术即是 LTE- Advanced 中的技术之一, 旨在扩展小区的覆盖范围, 减少通信中的死角地区, 平衡负 载, 转移热点地区的业务, 节省用户设备 (User Equipment, 简称 UE, 即, 终端) 的发射功率。 图 1是根据相关技术的釆用无线中继技术的系统结构示意图, 如图 1所 示, 在原有的基站 (Donor-eNB, 或称宿主基站) 和 UE之间增加一些新的 中继节点 (Relay-Node, 简称 RN, 或称为中继基站), 这些新增的 RN 和 Donor-eNB进行无线连接。 其中, Donor-eNB和 RN之间的无线链路称为回 程链路( backhaul link, 可以用 Un表示;), RN和 UE之间的无线链路称为接 入链路 (access link, 可以用 Uu表示)。 下行数据先到达 Donor-eNB , 然后 传递给 RN, RN再传输至 UE, 上行则反之。
RN 在正常工作状态下具备中继功能, 即, RN 具有在 RN 和基站 ( Donor-eNB )之间, 以及在 RN和其管理的 UE之间进行数据传输的中继功 能。 具体地, 在基站与 RN之间, RN的中继功能包括获取系统信息功能、 测量及上 ·ί艮测量 4艮告功能、 切换功能、 通过中继节点专用控制信道 ( Relay-node Physical Dedicated Control Channel, 简称为 R-PDCCH )及共享 信道 ( Relay-node Physical Downlink Shared Channel, 简称为 R-PDSCH, 或 者 Relay-node Physical Uplink Shared Channel, 简称为 R-PUSCH ) 进行数据 传输的功能等, 另外, RN还管理属于此 RN的小区, 管理此小区中的 UE; 在 RN与 UE之间, RN的中继功能包括发送 RN的系统信息功能、 管理 UE 的测量过程、管理 UE的切换过程、在 RN与 UE之间通过控制信道( PDCCH ) 及共享信道 ( PDSCH/PUSCH ) 进行数据传输的功能等。
RN在正常工作状态下将与 Donor-eNB建立 S 1接口以及 X2接口,其中, 建立 S 1接口是为了与核心网实现通信, 建立 X2接口是为了与 Donor-eNB 实现通信。 当 RN管辖下的 UE需要切换时,该 RN基于 UE的测量报告做出 切换决策, 其切换流程包括以下步骤: 步骤 101 , RN通过 X2接口向相邻的目标基站 (或中继节点)发送切换 请求信令, 在切换请求信令中包括该 UE的上下文信息, 例如, 建立的增强 的无线接入 载 ( Evolved Radio Access Bearer, 简称为 E-RAB ) 的参数 ( E-RABs To Be Setup Item, 包括建立的 E-RAB的标识、 月艮务质量、 传输层 的配置参数等)、 UE的安全能力 (UE Security Capabilities ), UE的无线资源 控制的上下文 ( RRC Context )、 UE 接入层的安全信息 ( AS Security Information, 包括 UE釆用的力口密密钥 KeNB*以及密钥生成所需参数网络色 码 NCC值)等。其中, RRC Context包括: UE无线接入能力信息( Radio Access Capability Info )、 UE在源小区 (这里指 RN小区) 的测量配置、 UE在源小 区的无线资源配置、 UE在源小区的安全算法配置、 UE在源小区的小区临时 网络标识 ( Cell Radio Network Temporary Identifier, 简称为 C-RNTI ), 源小 区的主信息块 ( Master Information Block ) , 源小区的系统消息块 1 ( SystemlnformationBlockType 1 ) , 源 小 区 的 系 统 消 息 块 2 ( SystemInformationBlockType2 ), 源小区的天线端口数目等。 步骤 102, 目标基站收到切换请求后, 实施接入控制, 并根据切换请求 中 UE的上下文信息为 UE分配资源, 通过 X2接口向 RN发送切换命令。 步骤 103 , RN接收到切换命令后, 向 UE发送切换命令。 步骤 104, UE取得与目标小区的同步, 在目标小区发起随机接入, 并向 目标小区发送切换完成信令, 此时, UE切换到目标小区。 发明人发现, 在步骤 101中, 由于 RN通过回程链路发送的切换请求信 令包含许多源小区的信息, 而这部分信息通常不会频繁变化。 因此, RN 在 每次发送切换请求中均携带这部分信息将耗费回程链路的接口 (这里可以特 指空口) 资源。 发明内容 本发明的主要目的在于提供一种切换信令的传输方案, 以至少解决相关 技术中 RN或源基站发送的切换信令中携带不频繁变化的源小区的信息而导 致耗费接口资源的问题。 为了实现上述目的, 根据本发明的一个方面, 提供了一种切换信令的传 输方法。 才艮据本发明的切换信令的传输方法, 包括以下步骤: 宿主基站接收到中 继节点 RN发送的用户设备 UE的切换信令, 其中, 切换信令中携带 RN为 UE配置的参数; 宿主基站在切换信令中增加以下参数信息中的一个或多个: 核心网为 UE配置的参数、 UE 自身的能力信息、 和 /或 RN所辖小区的特定 参数; 宿主基站将增加参数信息后的切换信令发送给目标基站; 以及目标基 站根据接收到的增加参数信息后的切换信令为 UE分配资源, 并向 RN返回 切换信令的响应。 进一步地, RN所辖小区的特定参数包括以下至少之一: RN所辖小区的 主信息块、 RN所辖小区的系统消息块 1、 RN所辖小区的系统消息块 2、 RN 所辖小区的天线端口数目和 RN所辖小区的下行频率。 进一步地, RN为 UE配置的参数包括以下至少之一: UE在 RN所辖小 区的测量配置、 UE在 RN所辖小区的无线资源配置、 UE在 RN所辖小区的 安全算法配置、 UE在 RN所辖小区的小区临时网络标识 C-RNTI、 UE在目 标基站所辖小区的重建信息和 UE在 RN所辖小区的激活时间。 进一步地, 核心网为 UE 配置的参数包括建立的增强的无线接入 载 E-RAB的参数; 以及 UE 自身的能力信息包括以下至少之一: UE的安全能 力、 UE接入层的安全信息、 UE无线接入能力信息和 UE的最大比特速率。 进一步地, 在 RN所辖小区的特定参数发生变化的情况下, 宿主基站接 收到 RN发送的 UE的切换信令包括:宿主基站接收到 RN发送的 UE的切换 信令, 其中, 切换信令中携带改变后的 RN所辖小区的特定参数; 宿主基站 用改变后的 RN所辖小区的特定参数替换本地保存的 RN所辖小区的特定参 数。 进一步地, 在宿主基站在切换信令中增加的参数信息为核心网为 UE配 置的参数和 UE 自身的能力信息的情况下, 目标基站根据接收到的增加参数 信息后的切换信令为 UE分配资源包括: 目标基站根据接收到的增加参数信 息后的切换信令和本地保存的 RN所辖小区的特定参数为 UE分配资源。 进一步地, 在 RN所辖小区的特定参数发生变化的情况下, 宿主基站接 收到 RN发送的 UE的切换信令包括:宿主基站接收到 RN发送的 UE的切换 信令, 其中, 切换信令中携带改变后的 RN所辖小区的特定参数; 目标基站 根据接收到的增加参数信息后的切换信令为 UE分配资源之前, 还包括: 目 标基站接收到增加参数信息后的切换信令, 用改变后的 RN所辖小区的特定 参数替换本地保存的 RN所辖小区的特定参数。 进一步地, 在 RN通过 X2接口向宿主基站发送切换信令的情况下, 切 换信令为切换请求; 在 RN通过 S 1接口向宿主基站发送切换信令的情况下, 切换信令为切换需求。 进一步地, 目标基站向 RN返回切换信令的响应包括: 目标基站向 RN 发送切换确认信令; 目标基站向 RN返回切换信令的响应之后, 还包括: RN 接收到切换确认信令后, 向 UE发送切换命令。 为了实现上述目的, 根据本发明的另一个方面, 还提供了一种切换信令 的传输方法。 才艮据本发明的切换信令的传输方法, 包括以下步骤: 基站接收到中继节 点 RN发送的用户设备 UE的切换信令, 其中, 切换信令中携带以下参数信 息中的一个或多个: RN为 UE配置的参数、 和 /或核心网为 UE配置的参数 以及、 UE 自身的能力信息; 基站 居接收到的切换信令和本地保存的 RN所 辖小区的特定参数为 UE分配资源, 并向 RN返回切换信令的响应。 进一步地, RN所辖小区的特定参数包括以下至少之一: RN所辖小区的 主信息块、 RN所辖小区的系统消息块 1、 RN所辖小区的系统消息块 2、 RN 所辖小区的天线端口数目和 RN所辖小区的下行频率。 进一步地, RN为 UE配置的参数包括以下至少之一: UE在 RN所辖小 区的测量配置、 UE在 RN所辖小区的无线资源配置、 UE在 RN所辖小区的 安全算法配置、 UE在 RN所辖小区的小区临时网络标识 C-RNTI、 UE在目 标基站所辖小区的重建信息和 UE在 RN所辖小区的激活时间。 进一步地, 核心网为 UE 配置的参数包括建立的增强的无线接入 载 E-RAB的参数; 以及 UE 自身的能力信息包括以下至少之一: UE的安全能 力、 UE接入层的安全信息、 UE无线接入能力信息和 UE的最大比特速率。 进一步地, 其特征在于, 在 RN所辖小区的特定参数发生变化的情况下, 基站接收到 RN发送的 UE的切换信令包括:基站接收到 RN发送的 UE的切 换信令, 其中, 切换信令中携带改变后的 RN所辖小区的特定参数; 基站用 改变后的 RN所辖小区的特定参数替换本地保存的 RN所辖小区的特定参数。 进一步地, 基站接收到 RN发送的 UE的切换信令, 在切换信令中携带 RN为 UE 配置的参数的情况下, 基站根据接收到的切换信令和本地保存的 RN所辖小区的特定参数为 UE分配资源包括: 基站根据接收到的切换信令、 本地保存的核心网为 UE配置的参数、 本地保存的 UE 自身的能力信息和本 地保存的 RN所辖小区的特定参数为 UE分配资源。 进一步地, 在 RN通过 X2接口向基站发送切换信令的情况下, 切换信 令为切换请求; 在 RN通过 S 1接口向基站发送切换信令的情况下, 切换信令 为切换需求。 为了实现上述目的, 居本发明的又一个方面, 还提供了一种切换信令 的传输方法。 根据本发明的切换信令的传输方法, 包括以下步骤: 目标基站接收到源 基站发送的用户设备 UE 的切换信令, 其中, 切换信令中携带源基站为 UE 配置的参数、 核心网为 UE配置的参数以及 UE 自身的能力信息; 目标基站 根据接收到的切换信令和本地保存的源基站所辖小区的特定参数为 UE分配 资源, 并向源基站返回切换信令的响应。 进一步地, 源基站所辖小区的特定参数包括以下至少之一: 源基站所辖 小区的主信息块、 源基站所辖小区的系统消息块 1、 源基站所辖小区的系统 消息块 2、 源基站所辖小区的天线端口数目和源基站所辖小区的下行频率。 进一步地, 其特征在于, 源基站为 UE配置的参数包括以下至少之一: UE在源基站所辖小区的测量配置、 UE在源基站所辖小区的无线资源配置、 UE在源基站所辖小区的安全算法配置、 UE在源基站所辖小区的小区临时网 络标识 C-RNTI、 UE在目标基站所辖小区的重建信息和 UE在源基站所辖 'J、 区的激活时间; 核心网为 UE 配置的参数包括建立的增强的无线接入 载 E-RAB的参数; 以及 UE 自身的能力信息包括以下至少之一: UE的安全能 力、 UE接入层的安全信息、 UE无线接入能力信息和 UE的最大比特速率。 进一步地, 在源基站所辖小区的特定参数发生变化的情况下, 目标基站 接收到源基站发送的 UE的切换信令包括: 目标基站接收到源基站发送的 UE 的切换信令, 其中, 切换信令中携带改变后的源基站所辖小区的特定参数; 目标基站用改变后的源基站所辖小区的特定参数替换本地保存的源基站所辖 小区的特定参数。 为了实现上述目的, 才艮据本发明的再一个方面, 提供了一种切换信令的 传输系统。 根据本发明的切换信令的传输系统, 包括宿主基站和目标基站, 其中, 宿主基站包括: 第一接收模块, 用于接收中继节点 RN发送的用户设备 UE 的切换信令, 其中, 切换信令中携带 RN为 UE配置的参数; 添加模块, 用 于在切换信令中增加以下参数信息中的一个或多个: 核心网为 UE配置的参 数、 UE 自身的能力信息和 /或、 RN 所辖小区的特定参数; 以及第一发送模 块, 用于将增加参数信息后的切换信令发送给目标基站; 目标基站包括: 第 二分配模块,用于根据接收到的增加参数信息后的切换信令为 UE分配资源; 以及第二发送模块, 用于向 RN发送切换信令的响应。 为了实现上述目的, 根据本发明的另一个方面, 提供了一种基站。 根据本发明的基站, 包括: 第三接收模块, 用于接收中继节点 RN发送 的用户设备 UE的切换信令, 其中, 切换信令中携带以下参数信息中的一个 或多个: RN为 UE配置的参数、 和 /或核心网为 UE配置的参数以及、 UE 自 身的能力信息;第三分配模块,用于根据接收到的切换信令和本地保存的 RN 所辖小区的特定参数为 UE分配资源; 以及第三发送模块, 用于向 RN发送 切换信令的响应。 为了实现上述目的, 根据本发明的又一个方面, 还提供了一种基站。 根据本发明的基站, 包括: 第四接收模块, 用于接收源基站发送的用户 设备 UE的切换信令, 其中, 切换信令中携带源基站为 UE配置的参数、 核 心网为 UE配置的参数以及 UE 自身的能力信息; 第四分配模块, 用于根据 接收到的切换信令和本地保存的源基站所辖小区的特定参数为 UE 分配资 源; 以及第四发送模块, 用于向源基站发送切换信令的响应。 通过本发明, 釆用在 RN向基站发送的切换信令中不包含源小区 (即, RN所辖小区) 特定参数的方式, 解决了相关技术中 RN或源基站发送的切 换信令中携带不频繁变化的源小区的信息而导致耗费接口资源的问题, 有效 地利用了的接口的带宽资源, 降低了接口之间切换信令的比特数, 从而优化 了系统的性能, 提高了传输效率。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是根据相关技术的釆用无线中继技术的系统结构示意图; 图 2是根据本发明实施例的切换信令的传输方法的流程图; 图 3是根据本发明另一实施例的切换信令的传输方法的流程图; 图 4是根据本发明又一实施例的切换信令的传输方法的流程图; 图 5是根据本发明实施例的切换信令的传输系统的示意图; 图 6是 居本发明实施例的基站的结构框图; 图 7是根据本发明另一实施例的基站的结构框图; 图 8是根据本发明实施例的 RN下的 UE切换到 RN所属基站的流程示 意图; 图 9是根据本发明实施例的 RN下的 UE切换到其他相邻基站的流程示 意图; 图 10是才艮据本发明实施例的 UE在相邻基站之间切换的流程示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互组合。 由于引入中继节点 RN后釆用的十办议架构已确定, 所有核心网与 RN之 间交互的 S 1 接口信令, 宿主基站均需要转发 (此时宿主基站实现了代理 proxy ), 所以, 宿主基站可以利用转发的 S 1接口信令, 以减少切换请求中包 含的内容, 从而有效地节省回程链路空口的资源。 图 2是根据本发明实施例的切换信令的传输方法的流程图,如图 2所示, 该方法包括以下步 4聚: 步骤 S202 , 宿主基站接收到中继节点 RN发送的用户设备 UE的切换信 令, 其中, 切换信令中携带 RN为 UE配置的参数; 步骤 S204, 宿主基站在切换信令中增加以下参数信息中的一个或多个: 核心网为 UE配置的参数、 UE 自身的能力信息、 RN所辖小区的特定参数; 步骤 S206, 宿主基站将增加参数信息后的切换信令发送给目标基站; 以 及 步骤 S208 , 目标基站才艮据接收到的增加参数信息后的切换信令为 UE分 配资源, 并向 RN返回切换信令的响应。 通过本发明实施例, 釆用在 RN向基站发送的切换信令中不包含 RN所 辖小区的特定参数 (即, 源小区特定的参数)的方式, 解决了相关技术中 RN 发送的切换信令中携带不频繁变化的源小区的信息而导致耗费空口资源的问 题,有效地利用了回程链路的空口资源, 降低了接口之间切换信令的比特数, 从而优化了系统的性能, 提高了传输效率。 需要说明的是, 该方法可以应用于频分双工 ( Frequency Division
Duplexing, 简称为 FDD ) 系统和时分双工 ( Time Division Duplexing, 简称 为 TDD ) 系统。 在具体实施过程中, 可以是宿主基站收到中继节点 RN发来的切换信令 后,在切换信令中加入部分用户设备 UE特定的参数和 /或源小区特定的参数, 宿主基站向目标基站发送加入部分用户设备特定的参数 (即, 核心网为 UE 配置的参数和 UE 自身的能力信息)和 /或源小区特定的参数的切换信令; 目 标基站收到切换信令后, 为用户设备分配资源, 然后通过宿主基站向中继节 点返回切换响应。 例如, 部分用户设备特定的参数可以包括以下的一项或多项: 建立的 E-RAB的参数、 UE的安全能力、 UE接入层的安全信息、 UE无线接入能力 信息、 UE的最大比特速率、 UE在目标基站所辖小区的重建信息。 例如, 源小区特定的可以参数包括以下的一项或多项: 源小区的主信息 块、 源小区的系统消息块 1、 源小区的系统消息块 2、 源小区的天线端口数 目、 源小区的下行频率。 优选地, RN所辖小区的特定参数包括以下至少之一: RN所辖小区的主 信息块、 RN所辖小区的系统消息块 1、 RN所辖小区的系统消息块 2、 RN所 辖小区的天线端口数目和 RN所辖小区的下行频率。 该方法可以明确在 RN 向宿主基站发送的 UE的切换信令中可以不携带 RN所辖小区的特定参数, 在宿主基站中保存有 RN所辖小区的特定参数,从而节约了系统的空口资源。 优选地, RN为 UE配置的参数包括以下至少之一: UE在 RN所辖小区 的测量配置、 UE在 RN所辖小区的无线资源配置、 UE在 RN所辖小区的安 全算法配置、 UE在 RN所辖小区的小区临时网络标识 C-RNTI、 UE在目标 基站所辖小区的重建信息和 UE在 RN所辖小区的激活时间。 优选地, 核心网为 UE 配置的参数包括建立的增强的无线接入 载 E-RAB的参数; 以及 UE 自身的能力信息包括以下至少之一: UE的安全能 力、 UE接入层的安全信息、 UE无线接入能力信息和 UE的最大比特速率。 优选地, 在 RN 所辖小区的特定参数发生变化的情况下, 在步骤 S202 中, 切换信令中携带改变后的 RN所辖小区的特定参数; 宿主基站用改变后 的 RN所辖小区的特定参数替换本地保存的 RN所辖小区的特定参数。例如, 中继节点 RN只在源小区的特定参数改变后, 向宿主基站发送的切换信令中 包括改变后部分或全部源小区特定的参数。 本优选实施例可以有效地对源小区的特定参数进行更新, 从而将当前的 源小区的特定参数携带在切换信令中, 以便目标基站的处理, 提高了系统的 有效性。 优选地, 在宿主基站在切换信令中增加的参数信息为核心网为 UE配置 的参数和 UE 自身的能力信息的情况下, 在步骤 S208中, 目标基站根据接收 到的增加参数信息后的切换信令和本地保存的 RN 所辖小区的特定参数为 UE分配资源。 本优选实施例中, 目标基站保存有源小区的特定参数, 在该特定参数不 变化的情况下, 无需在每个切换信令中都携带该特定参数, 从而提高了系统 的处理能力。 优选地, 在 RN 所辖小区的特定参数发生变化的情况下, 在步骤 S202 中, 切换信令中携带改变后的 RN所辖小区的特定参数; 在步骤 S208中, 目 标基站接收到增加参数信息后的切换信令, 用改变后的 RN所辖小区的特定 参数替换本地保存的 RN所辖小区的特定参数。 本优选实施例在源小区的特 定参数变化时, 通过在 RN向宿主基站发送的切换信令中携带变化后的该特 定参数, 更新目标基站中的该特定参数, 提高了系统的准确率。 在具体实施过程中, 切换信令可以包括切换请求和切换需求; 切换响应 可以包括切换请求确认和切换命令。 优选地, 在 RN通过 X2接口向宿主基站发送切换信令的情况下, 切换 信令为切换请求; 在 RN通过 S 1接口向宿主基站发送切换信令的情况下, 切 换信令为切换需求。 优选地, 在步骤 S208中, 目标基站可以向 RN发送切换确认信令; 在步 骤 S208之后, RN接收到切换确认信令后, 向 UE发送切换命令。 另外, 当宿主基站就是目标基站时, 宿主基站可以根据切换信令中包含 的信息以及已经获得的部分用户设备特定的参数和 /或源小区特定的参数, 实 施接入控制, 为用户设备分配资源, 向中继节点返回切换响应。 图 3是根据本发明另一实施例的切换信令的传输方法的流程图, 如图 3 所示, 该方法包括以下步 4聚: 步骤 S302 , 基站接收到中继节点 RN发送的用户设备 UE的切换信令, 其中,切换信令中携带以下参数信息中的一个或多个: RN为 UE配置的参数、 核心网为 UE配置的参数、 UE 自身的能力信息; 步骤 S304,基站根据接收到的切换信令和本地保存的 RN所辖小区的特 定参数为 UE分配资源, 并向 RN返回切换信令的响应。 通过本发明实施例, 釆用在 RN向基站发送的切换信令中不包含源小区
(即, RN所辖小区) 特定参数的方式, 解决了相关技术中 RN发送的切换 信令中携带不频繁变化的源小区的信息而导致耗费空口资源的问题, 有效地 利用了回程链路的空口资源, 降低了接口之间切换信令的比特数, 从而优化 了系统的性能, 提高了传输效率。 优选地, RN 所辖小区 (即, 源小区) 的特定参数包括以下至少之一: RN所辖小区的主信息块、 RN所辖小区的系统消息块 1、 RN所辖小区的系 统消息块 2、 RN所辖小区的天线端口数目和 RN所辖小区的下行频率。 该方 法可以明确在 RN向基站发送的 UE的切换信令中可以不携带源小区的特定 参数, 在基站中保存有源小区的特定参数, 从而节约了系统的空口资源。 优选地, RN为 UE配置的参数包括以下至少之一: UE在 RN所辖小区 的测量配置、 UE在 RN所辖小区的无线资源配置、 UE在 RN所辖小区的安 全算法配置、 UE在 RN所辖小区的小区临时网络标识 C-RNTI、 UE在目标 基站所辖小区的重建信息和 UE在 RN所辖小区的激活时间。 优选地, 核心网为 UE 配置的参数包括建立的增强的无线接入 载 E-RAB的参数; 以及 UE 自身的能力信息包括以下至少之一: UE的安全能 力、 UE接入层的安全信息、 UE无线接入能力信息和 UE的最大比特速率。 优选地, 在 RN 所辖小区的特定参数发生变化的情况下, 在步骤 S302 中,切换信令中携带改变后的 RN所辖小区的特定参数;基站用改变后的 RN 所辖小区的特定参数替换本地保存的 RN所辖小区的特定参数。 本优选实施例可以有效地对源小区的特定参数进行更新, 从而将当前的 源小区的特定参数携带在切换信令中, 提高了系统的有效性和准确率。 优选地, 在步骤 S302中, 在切换信令中携带 RN为 UE配置的参数的情 况下, 在步骤 S304 中, 基站根据接收到的切换信令、 本地保存的核心网为 UE配置的参数、本地保存的 UE 自身的能力信息和本地保存的 RN所辖小区 的特定参数为 UE分配资源。 本优选实施例中, 基站保存有核心网为 UE配置的参数和 UE 自身的能 力信息, 无需在 RN向基站发送的切换信令中携带这两类参数, 提高了系统 的处理能力。 优选地, 在 RN通过 X2接口向基站发送切换信令的情况下, 切换信令 为切换请求; 在 RN通过 S 1接口向基站发送切换信令的情况下, 切换信令为 切换需求。 需要说明的是, 本发明实施例主要是提供了一种 UE在同一基站中的不 同小区之间的切换方法, 即, 宿主基站与目标基站为同一基站的情况下, 切 换信令的优化传输方法, 可以应用于 FDD系统和 TDD系统。 图 4是根据本发明又一实施例的切换信令的传输方法的流程图, 如图 4 所示, 该方法包括以下步 4聚: 步骤 S402, 目标基站接收到源基站发送的用户设备 UE的切换信令, 其 中, 切换信令中携带源基站为 UE配置的参数、 核心网为 UE配置的参数以 及 UE 自身的能力信息; 步骤 S404, 目标基站根据接收到的切换信令和本地保存的源基站所辖小 区的特定参数为 UE分配资源, 并向源基站返回切换信令的响应。 通过本发明实施例, 釆用在源基站向目标基站发送的切换信令中不包含 源小区 (即, 源基站所辖小区) 特定参数的方式, 解决了相关技术中源基站 发送的切换信令中携带不频繁变化的源小区的信息而导致耗费 X2接口资源 的问题, 有效地利用了 X2接口的带宽资源, 降低了接口之间切换信令的比 特数, 从而优化了系统的性能, 提高了传输效率。 优选地, 源基站所辖小区的特定参数包括以下至少之一: 源基站所辖小 区的主信息块、 源基站所辖小区的系统消息块 1、 源基站所辖小区的系统消 息块 2、 源基站所辖小区的天线端口数目和源基站所辖小区的下行频率。 该 方法可以明确在源基站向目标基站发送的 UE的切换信令中可以不携带源基 站所辖小区的特定参数, 在目标基站中保存有源基站所辖小区的特定参数, 从而节约了系统的接口资源。 优选地, 源基站为 UE配置的参数包括以下至少之一: UE在源基站所辖 小区的测量配置、 UE在源基站所辖小区的无线资源配置、 UE在源基站所辖 小区的安全算法配置、 UE在源基站所辖小区的小区临时网络标识 C-RNTI、 UE在目标基站所辖小区的重建信息和 UE在源基站所辖小区的激活时间;核 心网为 UE配置的参数包括建立的增强的无线接入承载 E-RAB的参数;以及 以及 UE 自身的能力信息包括以下至少之一: UE的安全能力、 UE接入层的 安全信息、 UE无线接入能力信息和 UE的最大比特速率。 优选地, 在源基站所辖小区的特定参数发生变化的情况下, 目标基站接 收到源基站发送的 UE 的切换信令包括: 目标基站接收到源基站发送的 UE 的切换信令, 其中, 切换信令中携带改变后的源基站所辖小区的特定参数; 目标基站用改变后的源基站所辖小区的特定参数替换本地保存的源基站所辖 小区的特定参数。 本优选实施例可以有效地对源小区的特定参数进行更新, 从而将当前的 源小区的特定参数携带在切换信令中, 提高了系统的有效性和准确率。 图 5是根据本发明实施例的切换信令的传输系统的示意图,如图 5所示, 该系统包括宿主基站 52和目标基站 54 , 其中, 宿主基站 52包括: 第一接收模块 522 , 用于接收中继节点 RN发送的用 户设备 UE的切换信令, 其中, 切换信令中携带 RN为 UE配置的参数; 添 加模块 524 , 耦合至所述第一接收模块 522 , 用于在切换信令中增加以下参 数信息中的一个或多个: 核心网为 UE 配置的参数、 UE 自身的能力信息、 RN所辖小区的特定参数; 以及第一发送模块 526 , 耦合至添加模块 524 , 用 于将增加参数信息后的切换信令发送给目标基站; 目标基站 54包括: 第二分配模块 542 , 用于根据接收到的增加参数信息 后的切换信令为 UE分配资源; 以及第二发送模块 544 , 耦合至第二分配模 块 542 , 用于向 RN发送切换信令的响应。 图 6是根据本发明实施例的基站的结构框图, 如图 6所示, 该基站 60 包括: 第三接收模块 62 , 用于接收中继节点 RN发送的用户设备 UE的切换 信令, 其中, 切换信令中携带以下参数信息中的一个或多个: RN为 UE配置 的参数、 核心网为 UE配置的参数、 UE 自身的能力信息; 第三分配模块 64 , 耦合至第三接收模块 62 , 用于根据接收到的切换信令和本地保存的 RN所辖 小区的特定参数为 UE分配资源; 以及第三发送模块 66 , 耦合至第三分配模 块 64 , 用于向 RN发送切换信令的响应。 图 7是根据本发明另一实施例的基站的结构框图, 如图 7所示, 该基站 70包括:第四接收模块 72 ,用于接收源基站发送的用户设备 UE的切换信令, 其中, 切换信令中携带源基站为 UE配置的参数、 核心网为 UE配置的参数 以及 UE 自身的能力信息; 第四分配模块 74 , 耦合至第四接收模块 72 , 用于 根据接收到的切换信令和本地保存的源基站所辖小区的特定参数为 UE分配 资源; 以及第四发送模块 76 , 耦合至第四分配模块 74 , 用于向源基站发送 切换信令的响应。 下面将结合实例对本发明实施例的实现过程进行详细描述。 实例 1 长期演进(Long Term Evolution, 简称为 LTE ) 系统中, 基站 1 (指允许 接入中继节点的任意一个基站, 也称为宿主基站) 所管辖的小区 1中接入了 m个中继节点, 这些中继节点分别称之为 RN_1、 RN_2...RN_m。 这些中继 节点均处于正常的工作状态, 均可以为其覆盖下的用户设备提供服务。 中继 节点接入小区 1后, 均会与基站 1建立 S 1 以及 X2接口, S 1接口用于传递 中继节点与核心网之间的信令交互; X2 接口用于中继节点与基站 (基站 1 或其他的相邻基站) 之间信令交互。 RN_1 所辖小区覆盖下的多个用户设备处于连接状态, 建立了业务。 其 中的某个用户设备 ( UE1 ) 因为移动, 向 RN_1发送测量 4艮告, 报告相邻小 区 (小区 1 ) 的信号质量比当前服务小区的信号质量高预定的偏移量。 RN_1 做出切换决策, 需要将 UE1切换到小区 1 (目标小区)。 图 8是根据本发明实施例的 RN下的 UE切换到 RN所属基站的流程示 意图, 如图 8所示, 其切换信令的传输流程可以包括以下步骤: 步骤 802, RN 1向基站 1发送切换请求(Handover Request ), 在该切换 请求中包含关于 UE1特定的参数,包含的参数有建立的 E-RAB的参数、 UE1 的安全能力、 UE1接入层的安全信息、 UE1无线接入能力信息、 UE1在源小 区 (jt匕处指 RN_1 小区) 的测量配置、 UE1在源小区的无线资源配置、 UE1 在源小区的安全算法配置、 UE1在源小区的小区临时网络标识 C-RNTK UE1 的最大比特速率( UE Aggregate Maximum Bit Rate )、 UE1在基站 1所辖小区 的重建信息( Reestablishmentlnfo )、 UE 1在源小区的激活时间( InactiveTime )。 在具体实施过程中, 切换请求中可以不包括源小区特定的参数, 例如, 源小区的主信息块、 源小区的系统消息块 1、 源小区的系统消息块 2、 源小 区的天线端口数目、 源小区的下行频率均没有包括在切换请求中。 因为源小 区特定的参数不会频繁变更, 基站 1一旦获得这部分参数, 如果这部分参数 没有变化,切换请求中可以不携带这部分参数以便节省回程链路的空口资源, 提高空口的使用效率,基站 1可以通过后台操作和维护( O&M , Operation and Maintenance ) 艮务器获得这部分参数信息, 也可以通过 RN_1在之前为其他 UE发送的切换请求获得这部分参数信息, 其他实施例与此相同, 不再赘述。 步骤 804, 基站 1收到切换请求后, 居切换请求中包含的 UE1特定的 参数, 以及根据以前获得的源小区特定的参数, 实施接入控制, 为 UE1分配 资源, 向 RN—1发送切换请求确认 ( Handover Request Acknowledge ) 信令。 步骤 806, RN_1收到切换请求确认后, 向 UE1发送切换命令, 根据现 有协议, RN 1通过 RRC连接重配置 ( RRC Connection Reconfiguration ) 发 送切换命令,在 RRC连接重配置中包含移动控制信息( mobilityControlInfo )。 步骤 808, UE1收到切换命令后, 取得与目标小区的同步, 在目标小区 发起随机接入, 并向 目标小区发送切换完成信令 ( RRC Connection Reconfiguration Complete )„ 至此, UE 1完成了到目标小区的切换。 本实施例中, RN_1 向基站 1发送的切换请求中没有包含源小区特定的 参数, 这适用于源小区特定的参数没有改变的场景, 如果这部分参数发生了 变化, RN_1 需要在这部分参数变化之际或变化之后, 向基站 1发送的第一 个切换请求中包含源小区特定的参数, 基站 1收到这部分参数后, 需要替换 原来保存的参数,并将其应用于切换过程中用户设备参数的配置;之后, RN_1 为其他 UE发送的切换请求可以不携带源小区特定的参数。 需要说明的是,本实施例中 RN1发送的切换请求中只包含 UE特定的参 数, 不包括源小区特定的参数。 由于中继节点与基站之间也存在 S 1 接口, 因此, 当中继节点向基站发送 S 1接口信令切换需求( Handover Required )时, 也可以应用本实施例所述方法, 即, 切换需求中包括 UE特定的参数, 不包 括源小区特定的参数。 通过本实例 1提供了一种优化切换信令传输的方法, 即, 在 RN发送的 切换请求中只包含 UE特定的参数, 通过回程链路传递的切换信令可以大大 减少比特数, 节省了空口的宝贵资源, 降低了接口之间切换信令的比特数, 提高了传输效率。 实例 2
RN_1接入基站 1 (指允许接入中继节点的任意一个基站)所辖小区(小 区 1 )处于正常工作状态, RN_1与基站 1建立了 S 1接口和 X2接口。 RN_1 所辖小区覆盖下的 UE处于连接状态, 建立了业务。 由于 UE的移动, UE向 RN_1上报相邻小区 (小区 2, 基站 1所辖的小 区) 的信号质量比服务小区的信号质量高预定的偏移量的测量报告。 RN_1 收到 UE的测量报告后,做出切换决策,需要将 UE切换到小区 2( 目标小区), 其切换的流程与实例 1中描述的类似, 只是在 RN_1向基站 1发送的切换请 求中只包含部分 UE特定的参数, 不包含源小区( RN_1所辖小区)特定的参 数。 例如, 部分 UE特定的参数可以是指 RN_1为 UE配置的参数, 包括 UE 在源小区 (jt匕处指 RN_1小区) 的测量配置、 UE在源小区的无线资源配置、 UE在源小区的安全算法配置、 UE在源小区的小区临时网络标识 C-RNTI、 UE在基站 1所辖小区的重建信息 ( Reestablishmentlnfo ), UE在源小区的激 活时间 ( InactiveTime )。 此外, 其他 UE特定的参数是指核心网为 UE配置的参数、 以及 UE 自 身的能力信息, 这部分参数包括建立的 E-RAB的参数、 UE的安全能力、 UE 接入层的安全信息、 UE无线接入能力信息、 UE的最大比特速率。 这部分参 数在 UE建立业务时核心网将通过基站 1发送给 RN_1 ,根据中继节点引入后 釆用的协议架构, 基站 1能够解析核心网发送给 RN_1的信令。 例如, 当 UE 建立某个业务时, 核心网通过基站 1 向 RN_1 发送的初始上下文建立请求 ( Initial Context Setup Request ) 中包含核心网为 UE配置的参数、 以及 UE 自身的能力信息, 当基站 1转发该初始上下文建立请求时, 基站 1可以获知 核心网为 UE配置的参数、 以及 UE 自身的能力信息。 基站 1保存这部分信 息, 当基站 1收到 RN_1发来的关于该 UE的切换请求, 根据切换请求中包 含的部分 UE特定的参数、 保存的其他 UE特定的参数, 以及才艮据以前获得 的源小区特定的参数, 实施接入控制, 为 UE分配资源, 向 RN_1发送切换 请求确认。 然后 RN_1向 UE发送切换命令将 UE切换到目标小区。 本实施例中, UE在基站 1 所辖小区的重建信息包含在切换请求中, 重 建信息由 RN_1生成。 在具体实施过程中, 由于基站 1能够解析核心网发向 RN_1的 S 1信令, 基站 1能够获知 UE釆用的加密密钥和加密算法, 当基站 1通过切换请求获得 RN_1为该 UE分配的 C-RNTI后,基站 1能够据此计算 出 UE在基站 1所辖小区的重建信息 (重建信息的计算与现有技术相同, 在 此处不赞述), 因此, 切换请求中可以不包含所述重建信息。 另外, 由于协议 支持全配置 ( Full configuration ), 目标基站可以完全不理会源基站为 UE配 置的参数, 而重新为 UE配置完整的参数。 因此, 切换请求中也可以不包括 UE在源小区的测量配置、 UE在源小区的无线资源配置。 所以, 此时切换请 求中包含的部分 UE特定的参数是指 UE在源小区的安全算法配置、 UE在源 小区的小区临时网络标识 C-RNTI和 UE在源小区的激活时间。 可见, 当 RN发送的切换请求中只包含部分 UE特定的参数时, 通过回 程链路传递的切换信令可以减少传输比特数, 从而节省空口资源。 实例 3
RN_1接入基站 1 (指允许接入中继节点的任意一个基站)所辖小区(小 区 1 )处于正常工作状态, RN_1与基站 1建立了 S 1接口和 X2接口。 RN_1 所辖小区覆盖下的 UE处于连接状态, 建立了业务。 由于 UE的移动, UE向 RN_1上 4艮相邻小区 (小区 2, 基站 2所辖的小 区, 基站 1和基站 2之间存在 X2接口) 的信号质量比服务小区的信号质量 高预定的偏移量的测量报告。 RN_1收到 UE的测量报告后, 做出切换决策, 需要将 UE切换到小区 2 ( 目标小区)。 图 9是根据本发明实施例的 RN下的 UE切换到其他相邻基站的流程示 意图, 如图 9所示, 其切换信令的传输流程可以包括以下步骤: 步骤 902, RN 1向基站 1发送切换请求(Handover Request ), 在该切换 请求中包含关于全部或部分 UE特定的参数, 没有包含源小区特定的参数。 步骤 904, 基站 1收到切换请求后, 居切换请求中目标小区的标识等 信息发现需要将该信令转发给基站 2,根据中继节点引入后釆用的协议架构, 基站 1能够解析中继节点发来的 X2/S 1接口信令, 因此, 基站 1能够获知切 换请求中的目标小区标识信息, 同时基站 1通过解析切换请求信令发现其中 没有包含源小区特定的参数, 基站 1需要在切换请求中加入源小区特定的参 数。 在具体实施过程中, 当切换请求中只包含部分 UE特定的参数时, 即, 只包含 UE在源小区 (此处指 RN_1小区)的测量配置、 UE在源小区的无线 资源配置、 UE在源小区的安全算法配置、 UE在源小区的小区临时网络标识 C-RNTK UE在基站 2所辖小区的重建信息( Reestablishmentlnfo ), UE在源 小区的激活时间( InactiveTime ), 基站 1需要在切换请求中加入核心网为 UE 配置的参数、 以及 UE 自身的能力信息, 这部分参数包括建立的 E-RAB的参 数、 UE的安全能力、 UE接入层的安全信息、 UE无线接入能力信息、 UE的 最大比特速率。 基站 1可以在 UE初始建立业务、 或者在 UE从其他小区切 换到小区 1时获得核心网为 UE配置的参数、 以及 UE 自身的能力信息。 步骤 906, 基站 1向基站 2发送切换请求, 该信令包含源小区特定的参 数和 UE特定的参数。 步骤 908, 基站 2收到切换请求后, 实施接入控制, 为 UE分配资源, 向基站 1发送切换请求确认 ( Handover Request Acknowledge ) 信令。 步骤 910, 基站 1收到切换请求确认后, 根据信令中包含的 UE在源基 站的 X2应用层标识 ( Old eNB UE X2AP ID ) 获知该确认信令是发向 RN_1 的, 基站 1向 RN_1发送切换请求确认。 步骤 912, RN 1收到切换请求确认后,向 UE发送切换命令。例如, RN 1 可以通过 RRC连接重配置 ( RRC Connection Reconfiguration )发送切换命令, 在 RRC连接重配置中包含移动控制信息 ( mobilityControllnfo )。 步骤 914, UE收到切换命令后, 取得与目标小区的同步, 在目标小区发 起随机接入, 并向 目 标小区发送切换完成信令 ( RRC Connection Reconfiguration Complete ), 以通知目标小区 UE已完成到目标小区的切换。 本实施例中, RN_1 向基站 1发送的切换请求中没有包含源小区特定的 参数, 这适用于源小区特定的参数没有改变的场景, 如果这部分参数发生了 变化, RN_1 需要在这部分参数变化之际或变化之后, 向基站 1发送的第一 个切换请求中包含源小区特定的参数, 基站 1收到这部分参数后, 需要替换 原来保存的参数。 在随后收到 RN_1发来的切换请求后, 使用更新后的源小 区特定的参数。 需要说明的是, 本实施例中基站 2是宏基站, 如果基站 2也是隶属于基 站 1的其他中继节点, 所述方法同样适用。 实例 4
UE在基站 1 (源基站)所辖小区中处于连接状态, 由于 UE的移动, UE 向基站 1上报相邻小区 (小区 2, 基站 2所辖的小区, 基站 1和基站 2之间 存在 X2接口) 的信号质量高于预定门限的测量报告。 基站 1收到 UE的测 量报告后, 做出切换决策, 需要将 UE切换到小区 2 (目标小区)。 图 10是根据本发明实施例的 UE在相邻基站之间切换的流程示意图,如 图 10所示, 其切换信令的流程可以包括以下步骤: 步骤 1002, 基站 1向基站 2发送切换请求, 在该切换请求中只包含 UE 特定的参数, 没有包含小区特定的参数。 步骤 1004, 基站 2收到切换请求后, 根据 UE特定的参数以及保存的源 小区 (小区 1 ) 特定的参数为 UE分配资源, 向基站 1返回切换请求确认。 在具体实施过程中, 基站 2可以通过之前从小区 1切换过来的 UE的切 换请求中获得小区 1特定的参数, 也可以通过新增的 X2接口信令向相邻基 站传递本基站所辖小区特定的参数。 与实例 1描述的类似, 当小区 1特定的 参数没有发生改变时, 基站 1可以不在切换请求中携带小区特定的参数。 如 果这部分参数发生了变化, 基站 1需要在这部分参数变化之后, 向基站 2发 送的第一个切换请求 (源小区是小区 1 ) 中包含源小区特定的参数, 基站 2 收到这部分参数后, 需要替换原来保存的参数, 并将其应用于切换过程中用 户设备参数的配置; 之后, 基站 1为其他 UE (位于小区 1 中)发送的切换 请求可以不携带源小区特定的参数。 另外, 如果釆用新增的 X2接口信令传 递本基站所辖小区特定的参数, 也需要在这部分参数改变后, 立即向相邻基 站传递更新后本基站所辖小区特定的参数。 需要说明的是, 如果源小区特定 的参数只有部分发生改变, 切换请求中只需要携带发生改变的这部分参数。 步骤 1006, 基站 1收到切换请求确认后, 向 UE发送切换命令。 例如, 基站 1可以通过 RRC连接重配置( RRC Connection Reconfiguration )发送切 换命令, 在 RRC连接重配置中包含移动控制信息 ( mobilityControlInfo )。 步骤 1008 , UE收到切换命令后, 取得与目标小区的同步, 在目标小区 发起随机接入, 并向 目标小区发送切换完成信令 ( RRC Connection Reconfiguration Complete )„ 至 jt匕, UE完成到目标小区的切换。 需要说明的是, 本实施例中 UE是通过 X2接口进行切换的, 在具体实 施过程中, 如果基站 1和基站 2之间没有 X2接口, 那么 UE需要通过 S 1接 口切换, 基站 1向核心网发送的是切换需求的信令, 在该信令中可以只包含 UE 特定的参数。 只有当源小区特定的参数发生变化之际或变化之后, 才在 切换需求中包含更新后的源小区特定的参数。 可见, 当切换请求中只包含 UE特定的参数时, 通过 X2接口传递的切 换信令可以减少比特数, 节省该接口的带宽资源。 综上所述, 本发明实施例是一种优化切换信令传输的技术方案, 可以应 用于 FDD系统和 TDD系统, 解决了相关技术中 RN发送的切换信令中携带 不频繁变化的源小区的信息而导致耗费接口资源的问题, 有效地利用了接口 的带宽资源, 降低了接口之间切换信令的比特数, 从而优化了系统的性能, 提高了传输效率。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并 且在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或者 将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种切换信令的传输方法, 其特征在于, 包括以下步骤:
宿主基站接收到中继节点 RN发送的用户设备 UE的切换信令, 其 中, 所述切换信令中携带所述 RN为所述 UE配置的参数;
所述宿主基站在所述切换信令中增加以下参数信息中的一个或多 个: 核心网为所述 UE配置的参数、 所述 UE 自身的能力信息、 所述 RN 所辖小区的特定参数;
所述宿主基站将增加所述参数信息后的切换信令发送给目标基站; 以及
所述目标基站根据接收到的增加所述参数信息后的切换信令为所述 UE分配资源, 并向所述 RN返回所述切换信令的响应。
2. 根据权利要求 1所述的方法, 其特征在于, 所述 RN所辖小区的特定参 数包括以下至少之一: 所述 RN所辖小区的主信息块、 所述 RN所辖小 区的系统消息块 1、 所述 RN所辖小区的系统消息块 2、 所述 RN所辖小 区的天线端口数目和所述 RN所辖小区的下行频率。
3. 根据权利要求 1或 2所述的方法, 其特征在于, 所述 RN为所述 UE配 置的参数包括以下至少之一: 所述 UE在所述 RN所辖小区的测量配置、 所述 UE在所述 RN所辖小区的无线资源配置、所述 UE在所述 RN所辖 小区的安全算法配置、 所述 UE在所述 RN所辖小区的小区临时网络标 识 C-RNTI、 所述 UE在所述目标基站所辖小区的重建信息和所述 UE在 所述 RN所辖小区的激活时间。
4. 根据权利要求 1或 2所述的方法, 其特征在于, 所述核心网为所述 UE 配置的参数包括建立的增强的无线接入 载 E-RAB 的参数; 以及所述 UE 自身的能力信息包括以下至少之一: 所述 UE的安全能力、 所述 UE 接入层的安全信息、 所述 UE无线接入能力信息和所述 UE的最大比特 速率。
5. 根据权利要求 1或 2所述的方法, 其特征在于, 在所述 RN所辖小区的 特定参数发生变化的情况下, 所述宿主基站接收到所述 RN发送的所述 UE的切换信令包括: 所述宿主基站接收到所述 RN发送的所述 UE的所述切换信令, 其 中, 所述切换信令中携带改变后的所述 RN所辖小区的特定参数;
所述宿主基站用改变后的所述 RN所辖小区的特定参数替换本地保 存的所述 RN所辖小区的特定参数。
6. 居权利要求 1或 2所述的方法, 其特征在于, 在所述宿主基站在所述 切换信令中增加的所述参数信息为所述核心网为所述 UE配置的参数和 所述 UE 自身的能力信息的情况下, 所述目标基站根据接收到的增加所 述参数信息后的切换信令为所述 UE分配资源包括:
所述目标基站根据接收到的增加所述参数信息后的切换信令和本地 保存的所述 RN所辖小区的特定参数为所述 UE分配资源。
7. 居权利要求 6所述的方法, 其特征在于, 在所述 RN所辖小区的特定 参数发生变化的情况下,
所述宿主基站接收到所述 RN发送的所述 UE的所述切换信令包括: 所述宿主基站接收到所述 RN发送的所述 UE的所述切换信令, 其中, 所述切换信令中携带改变后的所述 RN所辖小区的特定参数;
所述目标基站根据接收到的增加所述参数信息后的切换信令为所述 UE分配资源之前,还包括: 所述目标基站接收到增加所述参数信息后的 切换信令, 用改变后的所述 RN所辖小区的特定参数替换所述本地保存 的所述 RN所辖小区的特定参数。
8. 根据权利要求 1所述的方法, 其特征在于, 在所述 RN通过 X2接口向 所述宿主基站发送所述切换信令的情况下, 所述切换信令为切换请求; 在所述 RN通过 S 1接口向所述宿主基站发送所述切换信令的情况下,所 述切换信令为切换需求。
9. 根据权利要求 1所述的方法, 其特征在于,
所述目标基站向所述 RN返回所述切换信令的响应包括: 所述目标 基站向所述 RN发送切换确认信令;
所述目标基站向所述 RN返回所述切换信令的响应之后, 还包括: 所述 RN接收到所述切换确认信令后, 向所述 UE发送切换命令。
10. —种切换信令的传输方法, 其特征在于, 包括以下步骤: 基站接收到中继节点 RN发送的用户设备 UE的切换信令, 其中, 所述切换信令中携带以下参数信息中的一个或多个:所述 RN为所述 UE 配置的参数、 核心网为所述 UE配置的参数、 所述 UE 自身的能力信息; 所述基站根据接收到的所述切换信令和本地保存的所述 RN所辖小 区的特定参数为所述 UE分配资源, 并向所述 RN返回所述切换信令的 响应。
11. 居权利要求 10所述的方法, 其特征在于, 所述 RN所辖小区的特定参 数包括以下至少之一: 所述 RN所辖小区的主信息块、 所述 RN所辖小 区的系统消息块 1、 所述 RN所辖小区的系统消息块 2、 所述 RN所辖小 区的天线端口数目和所述 RN所辖小区的下行频率。
12. 根据权利要求 10或 11所述的方法, 其特征在于, 所述 RN为所述 UE 配置的参数包括以下至少之一: 所述 UE在所述 RN所辖小区的测量配 置、 所述 UE在所述 RN所辖小区的无线资源配置、 所述 UE在所述 RN 所辖小区的安全算法配置、 所述 UE在所述 RN所辖小区的小区临时网 络标识 C-RNTI、 所述 UE 在所述目标基站所辖小区的重建信息和所述 UE在所述 RN所辖小区的激活时间。
13. 根据权利要求 10或 11所述的方法, 其特征在于, 所述核心网为所述 UE 配置的参数包括建立的增强的无线接入 载 E-RAB 的参数; 以及所述 UE 自身的能力信息包括以下至少之一: 所述 UE的安全能力、 所述 UE 接入层的安全信息、 所述 UE无线接入能力信息和所述 UE的最大比特 速率。
14. 根据权利要求 10或 11所述的方法, 其特征在于, 在所述 RN所辖小区 的特定参数发生变化的情况下 ,所述基站接收到所述 RN发送的所述 UE 的所述切换信令包括:
所述基站接收到所述 RN发送的所述 UE的所述切换信令, 其中, 所述切换信令中携带改变后的所述 RN所辖小区的特定参数;
所述基站用改变后的所述 RN所辖小区的特定参数替换所述本地保 存的所述 RN所辖小区的特定参数。
15. 根据权利要求 10或 11所述的方法, 其特征在于, 所述基站接收到所述 RN发送的所述 UE的所述切换信令,在所述切换信令中携带所述 RN为 所述 UE配置的参数的情况下, 所述基站才艮据接收到的所述切换信令和 所述本地保存的所述 RN所辖小区的特定参数为所述 UE分配资源包括: 所述基站根据接收到的所述切换信令、 本地保存的所述核心网为所 述 UE配置的参数、 本地保存的所述 UE 自身的能力信息和所述本地保 存的所述 RN所辖小区的特定参数为所述 UE分配资源。
16. 根据权利要求 10所述的方法, 其特征在于, 在所述 RN通过 X2接口向 所述基站发送所述切换信令的情况下, 所述切换信令为切换请求; 在所 述 RN通过 S 1接口向所述基站发送所述切换信令的情况下,所述切换信 令为切换需求。
17. 一种切换信令的传输方法, 其特征在于, 包括以下步骤:
目标基站接收到源基站发送的用户设备 UE的切换信令, 其中, 所 述切换信令中携带所述源基站为所述 UE配置的参数、核心网为所述 UE 配置的参数以及所述 UE 自身的能力信息;
目标基站根据接收到的所述切换信令和本地保存的所述源基站所辖 小区的特定参数为所述 UE分配资源, 并向所述源基站返回所述切换信 令的响应。
18. 根据权利要求 17所述的方法, 其特征在于, 所述源基站所辖小区的特定 参数包括以下至少之一: 所述源基站所辖小区的主信息块、 所述源基站 所辖小区的系统消息块 1、 所述源基站所辖小区的系统消息块 2、 所述源 基站所辖小区的天线端口数目和所述源基站所辖小区的下行频率。
19. 根据权利要求 17或 18所述的方法, 其特征在于,
所述源基站为所述 UE配置的参数包括以下至少之一: 所述 UE在 所述源基站所辖小区的测量配置、 所述 UE在所述源基站所辖小区的无 线资源配置、 所述 UE在所述源基站所辖小区的安全算法配置、 所述 UE 在所述源基站所辖小区的小区临时网络标识 C-RNTI、所述 UE在所述目 标基站所辖小区的重建信息和所述 UE在所述源基站所辖小区的激活时 间; 所述核心网为所述 UE配置的参数包括建立的增强的无线接入 载 E-RAB的参数; 以及
所述 UE 自身的能力信息包括以下至少之一: 所述 UE的安全能力、 所述 UE接入层的安全信息、所述 UE无线接入能力信息和所述 UE的最 大比特速率。
20. 根据权利要求 17或 18所述的方法, 其特征在于, 在所述源基站所辖小 区的特定参数发生变化的情况下, 所述目标基站接收到所述源基站发送 的所述 UE的所述切换信令包括:
所述目标基站接收到所述源基站发送的所述 UE的所述切换信令, 其中, 所述切换信令中携带改变后的所述源基站所辖小区的特定参数; 所述目标基站用改变后的所述源基站所辖小区的特定参数替换所述 本地保存的所述源基站所辖小区的特定参数。
21. 一种切换信令的传输系统, 包括宿主基站和目标基站, 其特征在于, 其 中,
所述宿主基站包括:
第一接收模块, 用于接收中继节点 RN发送的用户设备 UE的切换 信令, 其中, 所述切换信令中携带所述 RN为所述 UE配置的参数; 添加模块, 用于在所述切换信令中增加以下参数信息中的一个或多 个: 核心网为所述 UE配置的参数、 所述 UE 自身的能力信息、 所述 RN 所辖小区的特定参数; 以及
第一发送模块, 用于将增加所述参数信息后的切换信令发送给所述 目标基站;
所述目标基站包括:
第二分配模块, 用于根据接收到的增加所述参数信息后的切换信令 为所述 UE分配资源; 以及
第二发送模块, 用于向所述 RN发送所述切换信令的响应。
22. 一种基站, 其特征在于, 包括:
第三接收模块, 用于接收中继节点 RN发送的用户设备 UE的切换 信令, 其中, 所述切换信令中携带以下参数信息中的一个或多个: 所述 RN为所述 UE配置的参数、 核心网为所述 UE配置的参数、 所述 UE 自 身的能力信息;
第三分配模块, 用于根据接收到的所述切换信令和本地保存的所述 RN所辖小区的特定参数为所述 UE分配资源; 以及
第三发送模块, 用于向所述 RN发送所述切换信令的响应。 一种基站, 其特征在于, 包括:
第四接收模块, 用于接收源基站发送的用户设备 UE的切换信令, 其中, 所述切换信令中携带所述源基站为所述 UE配置的参数、 核心网 为所述 UE配置的参数以及所述 UE 自身的能力信息;
第四分配模块, 用于根据接收到的所述切换信令和本地保存的所述 源基站所辖小区的特定参数为所述 UE分配资源; 以及
第四发送模块, 用于向所述源基站发送所述切换信令的响应。
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