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WO2011150571A1 - Procédé, système et enodeb de transmission d'une signalisation de transfert - Google Patents

Procédé, système et enodeb de transmission d'une signalisation de transfert 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
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
PCT/CN2010/073530
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English (en)
Chinese (zh)
Inventor
邓云
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ZTE Corp
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ZTE Corp
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Filing date
Publication date
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Priority to PCT/CN2010/073530 priority Critical patent/WO2011150571A1/fr
Publication of WO2011150571A1 publication Critical patent/WO2011150571A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control 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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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne un procédé, un système et un eNodeB pour la transmission d'une signalisation de transfert, le procédé comprenant les étapes suivantes : un eNodeB donneur reçoit une signalisation de transfert pour un équipement utilisateur (UE) à partir d'un nœud relais (RN), la signalisation de transfert contenant des paramètres qui sont configurés pour l'UE par le RN ; l'eNodeB donneur ajoute un ou plusieurs paramètres des informations de paramètres suivantes à la signalisation de transfert : des paramètres configurés pour l'UE par un réseau de base, des informations de capacité de l'UE lui-même, des paramètres particuliers dans une cellule gérée par le RN ; l'eNodeB donneur transmet la signalisation de transfert avec les informations de paramètres ajoutées à un eNodeB cible ; et l'eNodeB cible alloue des ressources pour l'UE selon la signalisation de transfert reçue avec les informations de paramètres ajoutées, et renvoie une réponse de signalisation de transfert au RN. Grâce à la présente invention, le nombre de bits dans la signalisation de transfert entre des interfaces est réduit et, par conséquent, la performance du système est optimisée, et l'efficacité de la transmission est améliorée.
PCT/CN2010/073530 2010-06-03 2010-06-03 Procédé, système et enodeb de transmission d'une signalisation de transfert Ceased WO2011150571A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1628476A (zh) * 2002-06-05 2005-06-15 诺基亚公司 通过将不同切换参数用于通信网络中的不同业务和用户类别来执行切换的方法
CN101237672A (zh) * 2007-01-29 2008-08-06 华为技术有限公司 一种演进网络中建立s1信令连接的方法、装置及系统
CN101389124A (zh) * 2007-09-11 2009-03-18 中兴通讯股份有限公司 中继网络小区切换过程中的多天线模式选择方法
WO2009045968A1 (fr) * 2007-10-01 2009-04-09 Qualcomm Incorporated Accès mobile dans un réseau à points d'accès variés

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1628476A (zh) * 2002-06-05 2005-06-15 诺基亚公司 通过将不同切换参数用于通信网络中的不同业务和用户类别来执行切换的方法
CN101237672A (zh) * 2007-01-29 2008-08-06 华为技术有限公司 一种演进网络中建立s1信令连接的方法、装置及系统
CN101389124A (zh) * 2007-09-11 2009-03-18 中兴通讯股份有限公司 中继网络小区切换过程中的多天线模式选择方法
WO2009045968A1 (fr) * 2007-10-01 2009-04-09 Qualcomm Incorporated Accès mobile dans un réseau à points d'accès variés

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