WO2014023222A1 - 无线链路重建立方法、ue及系统 - Google Patents

无线链路重建立方法、ue及系统 Download PDF

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Publication number
WO2014023222A1
WO2014023222A1 PCT/CN2013/080921 CN2013080921W WO2014023222A1 WO 2014023222 A1 WO2014023222 A1 WO 2014023222A1 CN 2013080921 W CN2013080921 W CN 2013080921W WO 2014023222 A1 WO2014023222 A1 WO 2014023222A1
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WIPO (PCT)
Prior art keywords
wireless link
wireless
base station
link
downlink
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PCT/CN2013/080921
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English (en)
French (fr)
Inventor
时洁
柴丽
蔺波
张亮亮
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华为技术有限公司
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Publication of WO2014023222A1 publication Critical patent/WO2014023222A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/18Management of setup rejection or failure

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a radio link re-establishment method, a UE, and a system. Background technique
  • Multi-Point, coordinated multipoint transmission technology to increase data transfer rates.
  • a plurality of interconnected base stations are included, and these base stations may be macro cell base stations or micro cell base stations.
  • the UE can work on multiple carriers at the same time, one of the carriers is called a primary carrier, and the cell corresponding to the primary carrier becomes the primary cell.
  • the primary carrier can schedule the UE (User Equipment) to work on other carriers.
  • Each of the carriers may correspond to multiple links, and each link corresponds to one communication node, and the communication node may be the above macro cell base station or micro cell base station.
  • a wireless link is a wireless communication channel between a UE and a communication node.
  • a communication node serving the UE may be a base station, such as a macro base station or a micro base station, and the micro base station may be a pico, a femto, or a home base station.
  • the radio link re-establishment process in which cell the radio link re-establishment request message of the UE is sent, the downlink response message is received in the corresponding cell, and the radio link re-establishment process of the UE is only in the primary cell.
  • a radio link failure will occur.
  • the UE can maintain a connection with multiple radio links due to the improvement of the capability of the UE, and the prior art is only based on the CRS (Cell Specific Reference Signal) corresponding to the primary cell.
  • CRS Cell Specific Reference Signal
  • the UE selects a suitable cell to initiate a radio link re-establishment process, and the process requires the base station to perform RACH (Random Access Channel) access, thereby reducing the UE's absence.
  • RACH Random Access Channel
  • a radio link re-establishment method a UE, and a system are provided to solve the problem that the radio link re-establishment process is not efficient in the prior art.
  • a method for re-establishing a radio link includes:
  • a UE in another aspect, where the UE includes:
  • a establishing unit configured to establish a plurality of downlink wireless links respectively with the communication node
  • a sending unit configured to: when the UE generates a wireless chain on one of the plurality of downlink wireless links When the path fails, sending a re-establishment request message to a communication node corresponding to an uplink radio link that can work normally;
  • a reconstruction unit configured to receive one or more re-establishment messages returned by one or more communication nodes in response to the re-establishment request message on one or more downlink wireless links, respectively, to complete wireless according to the re-establishment message The link is re-established.
  • another UE includes: a wireless transceiver and a processor, where the wireless transceiver is configured to establish multiple downlink wireless links with multiple communication nodes, respectively, and
  • the processor configured to send, when the radio link fails on a downlink radio link of the multiple downlink radio links, to a communication node corresponding to an uplink radio link that can work normally Reestablishing a request message, receiving one or more re-establishment messages returned by one or more communication nodes in response to the re-establishment request message on one or more downlink wireless links, respectively, to complete wireless according to the re-establishment message
  • the link is re-established.
  • a wireless link re-establishment system where the system includes multiple communication nodes, and each of the multiple communication nodes is configured to establish a downlink wireless link with the UE, And causing the UE to send a re-establishment request to a communication node corresponding to a working uplink radio link when a radio link failure occurs on one of the plurality of downlink radio links.
  • a plurality of downlink radio links are respectively established between the UE and the multiple communication nodes, and when the UE fails to generate a radio link on one of the plurality of downlink radio links,
  • the communication node corresponding to the normally working uplink radio link transmits a re-establishment request message, and receives one or more re-establishment messages that the one or more communication nodes respectively return on one or more downlink radio links in response to the re-establishment request message.
  • the radio link re-establishment process is completed through the other at least one established radio link, so there is no need to send a random access scrambling code and wait
  • the random access response message returned by the cell does not need to obtain the radio resource for sending the RRC re-establishment request message in the next step by using the random access response message, thereby improving the efficiency of re-establishing the radio link of the UE.
  • FIG. 1 is a flowchart of a first embodiment of a method for reestablishing a radio link according to the present invention
  • FIG. 2 is a flowchart of a second embodiment of a method for reestablishing a radio link according to the present invention
  • FIG. 3 is a flowchart of a third embodiment of a method for reestablishing a radio link according to the present invention.
  • FIG. 4 is a flowchart of a fourth embodiment of a method for reestablishing a radio link according to the present invention.
  • FIG. 5 is a flowchart of a fifth embodiment of a method for reestablishing a radio link according to the present invention.
  • FIG. 6 is a flowchart of a sixth embodiment of a method for reestablishing a radio link according to the present invention.
  • FIG. 7 is a block diagram of a first embodiment of a UE according to the present invention.
  • 8 is a block diagram of a second embodiment of a UE according to the present invention.
  • FIG. 9 is a block diagram of an embodiment of a wireless link re-establishment system of the present invention. detailed description
  • the following embodiments of the present invention provide a radio link re-establishment method, a UE, and a system to improve the efficiency of reestablishing a wireless link.
  • FIG. 1 a flowchart of a first embodiment of a method for reestablishing a radio link according to the present invention is shown:
  • Step 101 Establish multiple downlink wireless links between the UE and multiple communication nodes.
  • the communication node may include: a cell, or a TP (Transport), or a base station, or an indoor baseband processing unit on the network side; wherein the TP may be specifically a Remote Radio Head (RRH) unit.
  • TP Transmission
  • RRH Remote Radio Head
  • the wireless link may include: a CRS-based wireless link, or based on a CSI-RS
  • Step 102 When the UE fails the radio link on one of the plurality of downlink radio links, the UE sends a re-establishment request message to the communication node corresponding to the uplink radio link that can work normally.
  • a downlink radio link, and an uplink radio link exists between the UE and a communication node; the one uplink radio link capable of working normally is different from the one uplink radio link, or the one can The communication node corresponding to the normally working uplink wireless link is different from the one communication node.
  • an uplink radio link that can work normally includes: an uplink radio link configured by the base station for the UE; or a designated uplink radio link that is locally stored by the UE; or, the base station configures the UE
  • the radio link configured by the base station for the UE or the cell where the radio link is located, and the specified non-local storage of the UE a line link or a cell in which the radio link is located, and a radio resource configured by the base station for the UE, may have a certain mapping relationship with a radio link in which a radio link fails or a cell in which the radio link is located, for example, a pair One, or one-to-many, or many-to-one, or many-to-many, will not be repeated here.
  • the mapping relationship may be configured by the base station to the UE, or the UE may be stored locally.
  • Step 103 The UE receives one or more re-establishment messages returned by one or more communication nodes in response to the re-establishment request message on one or more downlink radio links, respectively, to complete the wireless chain according to the re-establishment message.
  • the road is built again.
  • the re-establishment request message is forwarded to the one or more communication nodes by a communication node corresponding to an uplink radio link that can work normally; or the re-establishment request message is used by an uplink wireless device that can work normally.
  • a communication node corresponding to the link is forwarded to the one or more communication nodes via at least one communication node.
  • the re-establishment message includes the radio resource configuration information of the UE, and the downlink information subsequently received by the UE is the downlink data received according to the radio resource configuration information.
  • the radio link re-establishment process is completed through the other at least one established radio link, so there is no need to send a random access scrambling code and wait for the cell.
  • the returned random access response message does not need to obtain the radio resource for sending the RRC re-establishment request message in the next step by using the random access response message, thereby improving the efficiency of re-establishing the radio link of the UE.
  • FIG. 2 it is a flowchart of a second embodiment of a method for reestablishing a radio link according to the present invention.
  • the embodiment shows a process of reestablishing a radio link in a radio link where a radio link fails or a cell in which a radio link is located. :
  • Step 201 Establish multiple downlink wireless links between the UE and multiple communication nodes.
  • the communication node may include: a cell, or a TP, or a base station, or an indoor baseband processing unit on the network side.
  • the TP may be specifically an RRH unit.
  • the wireless link may include: a CRS-based wireless link, or a CSI-RS based wireless link, or a wireless link that identifies a cell signal quality status, or a wireless link that identifies a TP signal quality status, or A wireless link that identifies the port signal quality status.
  • the CRS signal-based radio link refers to a link that the UE obtains the radio link quality by measuring the CRS signal
  • the CSI-RS-based radio link refers to the link that the UE obtains the radio link quality by measuring the CSI-RS.
  • the radio link that identifies the TP signal quality status refers to the link that the UE obtains the radio link quality by measuring the TP signal quality status, and identifies the port signal quality.
  • the wireless link of the quantity state refers to the link of the UE to obtain the quality of the wireless link by measuring the signal quality state of the port. The UE determines whether the radio link fails by the radio link by the obtained radio link quality.
  • Step 202 The UE generates a radio link failure on one of the plurality of downlink radio links.
  • Step 203 The UE sends a reestablishment request message to a communication node corresponding to an uplink radio link that can work normally.
  • an uplink radio link that can work normally includes: an uplink radio link configured by the base station for the UE; or a designated uplink radio link that is locally stored by the UE; or, the base station configures the UE
  • the radio station configured by the base station is a radio link configured by the UE, a cell where the radio link is located, a designated radio link locally stored by the UE, or a cell where the radio link is located, and the base station is configured for the UE.
  • the radio resource may have a certain mapping relationship with the radio link or the radio link where the radio link fails, for example, one-to-one, or one-to-many, or many-to-one, or many-to-many, here No longer.
  • the mapping relationship may be configured by the base station to the UE, or the UE may store locally.
  • Step 204 Receive a re-establishment message returned on the downlink radio link where the radio link fails after the communication node corresponding to the downlink radio link that fails the radio link fails to respond to the re-establishment request message.
  • the re-establishment request message may be an uplink radio link correspondent that can work normally, and the re-establishment request message may also be a communication node corresponding to the communication of the uplink radio link that can work normally.
  • Step 205 The UE completes radio link re-establishment according to the received re-establishment message.
  • the UE may listen to the downlink information delivered by the communication node corresponding to the radio link that failed the radio link on the downlink radio link that fails the radio link.
  • FIG. 3 it is a flowchart of a third embodiment of a method for reestablishing a radio link according to the present invention.
  • the embodiment shows a process of performing radio link re-establishment on a radio link in which a UE is expected or a cell in which the radio link is located:
  • Step 301 Establish multiple downlink wireless links between the UE and multiple communication nodes.
  • the communication node may include: a cell, or a TP, or a base station, or an indoor baseband processing unit on the network side.
  • the TP may be specifically an RRH unit.
  • the wireless link may include: a CRS-based wireless link, or a CSI-RS based wireless link, or a wireless link that identifies a cell signal quality status, or a wireless link that identifies a TP signal quality status, or A wireless link that identifies the port signal quality status.
  • the CRS signal-based radio link refers to a link that the UE obtains the radio link quality by measuring the CRS signal
  • the CSI-RS-based radio link refers to the link that the UE obtains the radio link quality by measuring the CSI-RS.
  • the radio link that identifies the TP signal quality status refers to the link that the UE obtains the radio link quality by measuring the TP signal quality status
  • the radio link that identifies the port signal quality status refers to the UE obtains the link of the radio link quality by measuring the port signal quality status. road.
  • the UE determines whether the radio link fails by the radio link by the obtained radio link quality.
  • Step 302 The UE fails to generate a radio link on a downlink radio link.
  • Step 303 The UE sends a re-establishment request message to the communication node corresponding to the uplink radio link that can work normally, where the re-establishment request message includes the identifier information of the radio link expected by the UE, to indicate that the UE is expected to receive Re-establishing the desired wireless link of the message.
  • the identifier information of the radio link may include: a link identifier of the radio link, or a cell identifier of a cell where the radio link is located, or a signal status information reference signal CSI-RS of the radio link.
  • an uplink radio link that can work normally includes: an uplink radio link configured by the base station for the UE; or a designated uplink radio link that is locally stored by the UE; or, the base station configures the UE
  • the radio station configured by the base station is a radio link configured by the UE, a cell where the radio link is located, a designated radio link locally stored by the UE, or a cell where the radio link is located, and the base station is configured for the UE.
  • the radio resource may have a certain mapping relationship with the radio link or the radio link where the radio link fails, for example, one-to-one, or one-to-many, or many-to-one, or many-to-many, here No longer praise.
  • the image The shot relationship may be configured by the base station to the UE, or the UE may store locally. Road identification information.
  • Step 304 Receive a re-establishment message returned by the communication node corresponding to the radio link desired by the UE in response to the re-establishment request message on the desired radio link.
  • the re-establishment request message may be forwarded to a communication node corresponding to the desired radio link of the UE by a communication node corresponding to the uplink radio link that can work normally; or the re-establishment request message may also be The communication node corresponding to the uplink wireless link capable of working normally is forwarded to the communication node corresponding to the desired wireless link of the UE via at least one communication node.
  • Step 305 The UE completes radio link re-establishment according to the received re-establishment message.
  • the UE may listen to the downlink information delivered by the communication node corresponding to the desired radio link on the radio link that is expected by the UE.
  • the radio link re-establishment process is completed through the other at least one established radio link, so there is no need to send a random access scrambling code and wait for the cell.
  • the returned random access response message does not need to obtain the radio resource for sending the RRC re-establishment request message in the next step by using the random access response message, thereby improving the efficiency of re-establishing the radio link of the UE.
  • FIG. 4 it is a flowchart of a fourth embodiment of a method for reestablishing a radio link according to the present invention.
  • the embodiment shows a process of reestablishing a radio link in a cell where the radio link is located after a pre-designated radio link:
  • Step 401 Establish multiple downlink wireless links between the UE and multiple communication nodes.
  • the communication node may include: a cell, or a TP, or a base station, or an indoor baseband processing unit on the network side.
  • the TP may be specifically an RRH unit.
  • the wireless link may include: a CRS-based wireless link, or a CSI-RS based wireless link, or a wireless link that identifies a cell signal quality status, or a wireless link that identifies a TP signal quality status, or A wireless link that identifies the port signal quality status.
  • the CRS signal-based radio link refers to a link that the UE obtains the radio link quality by measuring the CRS signal
  • the CSI-RS-based radio link refers to the link that the UE obtains the radio link quality by measuring the CSI-RS.
  • the radio link that identifies the TP signal quality status refers to the link that the UE obtains the radio link quality by measuring the TP signal quality status
  • the radio link that identifies the port signal quality status refers to the UE obtains the link of the radio link quality by measuring the port signal quality status.
  • road. The UE determines whether the radio link fails by the radio link by the obtained radio link quality.
  • Step 402 The UE acquires an identifier of one or more radio links configured by a macro base station among the multiple communication nodes, and is used to indicate that the re-establishment message is received when a radio link failure occurs on the one downlink radio link.
  • One or more wireless links configured by the macro base station are examples of the macro base station.
  • the one or more radio links configured by the macro base station may include: a radio link that is specified by the macro base station in advance for each of the multiple radio links; or The macro base station pre-determines the same radio link designated for all of the plurality of radio links.
  • the acquiring, by the UE, the identifier of one or more radio links configured by the macro base station of the multiple communications nodes may include: receiving a macro base station by using a broadcast message, a radio resource control protocol, RRC signaling, and a media connection Incoming control unit MACCE (Medium Access Control Control Element), Physical Downlink Control Channel (PDCCH) command, enhanced physical downlink control channel ePDCCH (enhanced-PDCCH, enhanced) At least one of the PDCCH) commands transmits an identity of one or more wireless links configured by the macro base station.
  • Step 404 The UE sends a reestablishment request message to a communication node corresponding to an uplink radio link that can work normally.
  • an uplink radio link that can work normally includes: an uplink radio link configured by the base station for the UE; or a designated uplink radio link that is locally stored by the UE; or, the base station configures the UE
  • the radio station configured by the base station is a radio link configured by the UE, a cell where the radio link is located, a designated radio link locally stored by the UE, or a cell where the radio link is located, and the base station is configured for the UE.
  • the radio resource may have a certain mapping relationship with the radio link or the radio link where the radio link fails, for example, one-to-one, or one-to-many, or many-to-one, or many-to-many, here No longer.
  • the mapping relationship may be configured by the base station to the UE, or the UE may store locally. Road identification information.
  • Step 405 The UE receives a communication node response corresponding to one or more wireless links configured by the macro base station. After the re-establishment request message, the re-establishment message returned on the radio link configured by the macro base station.
  • the re-establishment request message may be forwarded to a communication node corresponding to one or more radio links configured by the macro base station by a communication node corresponding to an uplink radio link that can work normally; or, the re-establishment request The message may also be forwarded by the communication node corresponding to the working uplink radio link to the communication node corresponding to the one or more radio links configured by the macro base station via the at least one communication node.
  • Step 406 The UE completes radio link re-establishment according to the received re-establishment message.
  • the downlink information delivered by the communication node corresponding to the wireless link configured by the macro base station may be monitored on the radio link configured by the macro base station.
  • the radio link re-establishment process is completed through the other at least one established radio link, so there is no need to send a random access scrambling code and wait for the cell.
  • the returned random access response message does not need to obtain the radio resource for sending the RRC re-establishment request message in the next step by using the random access response message, thereby improving the efficiency of re-establishing the radio link of the UE.
  • FIG. 5 it is a flowchart of a fifth embodiment of a method for reestablishing a radio link according to the present invention.
  • the embodiment shows a process of performing radio link re-establishment on a radio link or a pre-designated radio link desired by the UE: 501: Establish multiple downlink wireless links between the UE and multiple communication nodes.
  • the communication node may include: a cell, or a TP, or a base station, or an indoor baseband processing unit on the network side.
  • the TP may be specifically an RRH unit.
  • the wireless link may include: a CRS-based wireless link, or a CSI-RS based wireless link, or a wireless link that identifies a cell signal quality status, or a wireless link that identifies a TP signal quality status, or A wireless link that identifies the port signal quality status.
  • Step 502 The UE acquires an identifier of one or more radio links configured by a macro base station among the multiple communication nodes, and is used to indicate that the re-establishment message is received when a radio link failure occurs on a downlink radio link.
  • the one or more radio links configured by the macro base station may include: a radio link that is specified by the macro base station in advance for each of the multiple radio links; or The macro base station pre-determines the same radio link designated for all of the plurality of radio links.
  • the acquiring, by the UE, the identifier of one or more radio links configured by the macro base station of the multiple communications nodes may include: receiving a macro base station by using a broadcast message, a radio resource control protocol RRC letter And an identifier of one or more radio links configured by the macro base station, where the medium access control control unit MACCE, the physical downlink control channel PDCCH command, and the enhanced physical downlink control channel ePDCCH command are transmitted.
  • the one or more radio links configured by the macro base station may include the downlink radio link that fails to generate a radio link.
  • Step 503 The UE fails the radio link on a downlink radio link.
  • Step 504 The UE sends a re-establishment request message to the communication node corresponding to the uplink radio link that can work normally, where the re-establishment request message includes the identifier information of the radio link expected by the UE, to indicate that the UE is expected to receive Re-establishing the desired wireless link of the message.
  • the identifier information of the radio link may include: a link identifier of the radio link, or a cell identifier of a cell where the radio link is located, or a signal status information reference signal CSI-RS of the radio link.
  • an uplink radio link that can work normally includes: an uplink radio link configured by the base station for the UE; or a designated uplink radio link that is locally stored by the UE; or, the base station configures the UE
  • the radio station configured by the base station is a radio link configured by the UE, a cell where the radio link is located, a designated radio link locally stored by the UE, or a cell where the radio link is located, and the base station is configured for the UE.
  • the radio resource may have a certain mapping relationship with the radio link or the radio link where the radio link fails, for example, one-to-one, or one-to-many, or many-to-one, or many-to-many, here No longer praise.
  • the mapping relationship may be configured by the base station to the UE, or the UE may store locally. Road identification information.
  • Step 505 The UE receives the re-establishment message on the radio link configured by the macro base station, and receives the re-establishment message on the radio link expected by the UE.
  • the re-establishment request message may be forwarded by the communication node corresponding to the uplink radio link that can work normally to the communication node corresponding to the radio link desired by the UE and the communication corresponding to the radio link configured by the macro base station.
  • the re-establishment request message may be forwarded by the communication node corresponding to the working uplink radio link to the communication node corresponding to the desired radio link of the UE and the macro base station configuration by the at least one communication node.
  • Step 506 The UE completes radio link re-establishment according to the received re-establishment message.
  • the UE may receive the re-establishment message on the radio link that the UE expects and the radio link configured by the macro base station, especially when the communication node corresponding to the radio link desired by the UE and the radio link configured by the macro base station are configured.
  • the UE may select to listen to the downlink information on the wireless link corresponding to the communication node that first responds to the re-establishment message.
  • the radio link re-establishment process is completed through the other at least one established radio link, so there is no need to send a random access scrambling code and wait for the cell.
  • the returned random access response message does not need to obtain the radio resource for sending the RRC re-establishment request message in the next step by using the random access response message, thereby improving the efficiency of re-establishing the radio link of the UE.
  • FIG. 6 is a flowchart of a sixth embodiment of a method for reestablishing a radio link according to the present invention, the embodiment shows a process of reestablishing a radio link in a cell where a radio link or a radio link selected by a network side is located:
  • Step 601 Establish multiple downlink wireless links between the UE and multiple communication nodes.
  • the communication node may include: a cell, or a TP, or a base station, or an indoor baseband processing unit on the network side.
  • the TP may be specifically an RRH unit.
  • the radio link may include: a CRS-based radio link, or a CSI-RS based radio link, or a radio link that identifies a cell signal quality status, or a radio link that identifies a TP signal quality status. , or a wireless link that identifies the port signal quality status.
  • the CRS signal-based radio link refers to a link that the UE obtains the radio link quality by measuring the CRS signal
  • the CSI-RS-based radio link refers to the link that the UE obtains the radio link quality by measuring the CSI-RS.
  • the radio link that identifies the TP signal quality status refers to the link that the UE obtains the radio link quality by measuring the TP signal quality status
  • the radio link that identifies the port signal quality status refers to the UE obtains the link of the radio link quality by measuring the port signal quality status. road.
  • the UE determines whether the radio link fails by the radio link by the obtained radio link quality.
  • Step 602 The UE acquires an identifier of one or more radio links configured by a macro base station among the multiple communication nodes, and is used to indicate that the re-establishment message is received when a radio link failure occurs on a downlink radio link.
  • the one or more radio links configured by the macro base station may include: a radio link that is specified by the macro base station in advance for each of the multiple radio links; or The macro base station pre-determines the same radio link designated for all of the plurality of radio links.
  • the acquiring, by the UE, the identifier of the one or more radio links configured by the macro base station of the multiple communications nodes may include: receiving the macro base station by using a broadcast message, a radio resource control protocol, RRC signaling, and media connection An identifier of one or more radio links configured by the macro base station that is sent by at least one of the control control unit MACCE, the physical downlink control channel PDCCH command, and the enhanced physical downlink control channel ePDCCH command.
  • the one or more radio links configured by the macro base station may include the downlink radio link that fails to generate a radio link.
  • Step 603 The UE fails the radio link on a downlink radio link.
  • Step 604 The UE sends a re-establishment request message to the communication node corresponding to the uplink radio link that can work normally, where the re-establishment request message includes the identifier information of the radio link expected by the UE, to indicate that the UE is expected to receive Re-establishing the desired wireless link of the message.
  • the identifier information of the radio link may include: a link identifier of the radio link, or a cell identifier of a cell where the radio link is located, or a signal status information reference signal CSI-RS of the radio link.
  • an uplink radio link that can work normally includes: an uplink radio link configured by the base station for the UE; or a designated uplink radio link that is locally stored by the UE; or, the base station configures the UE
  • the radio station configured by the base station is a radio link configured by the UE, a cell where the radio link is located, a designated radio link locally stored by the UE, or a cell where the radio link is located, and the base station is configured for the UE.
  • the radio resource may have a certain mapping relationship with the radio link or the radio link where the radio link fails, for example, one-to-one, or one-to-many, or many-to-one, or many-to-many, here No longer.
  • the mapping relationship may be configured by the base station to the UE, or the UE may store locally. Road identification information.
  • the re-establishment request message may be forwarded by the communication node corresponding to the uplink radio link that can work normally to the communication node corresponding to the radio link desired by the UE and the communication corresponding to the radio link configured by the macro base station.
  • the re-establishment request message may be forwarded by the communication node corresponding to the working uplink radio link to the communication node corresponding to the desired radio link of the UE and the macro base station configuration by the at least one communication node.
  • Step 605 The UE receives a notification sent by the macro base station, where the notification is used to indicate a radio link selected by the macro base station in one or more radio links configured by the macro base station and the desired radio link.
  • Step 606 The UE receives a re-establishment message returned on the selected radio link after the communication node corresponding to the selected radio link responds to the re-establishment request message.
  • Step 607 The UE completes radio link re-establishment according to the received re-establishment message.
  • the UE monitors the downlink information sent by the communication node corresponding to the selected wireless link on the selected wireless link.
  • the radio link re-establishment process is completed through the other at least one established radio link, so there is no need to send a random access scrambling code and wait for the cell.
  • the returned random access response message does not need to obtain the radio resource for sending the RRC re-establishment request message in the next step by using the random access response message, thereby improving the efficiency of re-establishing the radio link of the UE.
  • the foregoing embodiments of the present invention can be applied to a CoMP system.
  • multiple communication nodes provide services for one UE, that is, the one UE can establish a wireless link with multiple communication nodes respectively, and the embodiment of the present invention is applied.
  • the UE may perform re-establishment of the radio link through the other established radio links of the established radio link except the radio link.
  • the present invention also provides an embodiment of a UE and radio link re-establishment system.
  • FIG. 7 is a block diagram of a first embodiment of a UE according to the present invention
  • the UE may be used to perform the foregoing embodiment of the wireless link re-establishment method of the present invention.
  • the UE includes: an establishing unit 710, a transmitting unit 720, and a reconstructing unit 730.
  • the establishing unit 710 is configured to establish a plurality of downlink wireless links with the communication node
  • the sending unit 720 is configured to: when the UE is in a downlink wireless link of the multiple downlink wireless links When a radio link failure occurs, sending a re-establishment request message to a communication node corresponding to an uplink radio link that can work normally;
  • the reestablishing unit 730 is configured to receive, by the one or more communications nodes, one or more re-establishment messages respectively returned on the one or more downlink radio links in response to the re-establishment request message, to complete according to the re-establishment message.
  • the wireless link is re-established. a downlink radio link, and an uplink radio link exists between the UE and a communication node; the one uplink radio link capable of working normally is different from the one uplink radio link, or the one can The communication node corresponding to the normally working uplink wireless link is different from the one communication node.
  • the one or more downlink wireless links are: the downlink wireless link in which the wireless link fails.
  • the downlink wireless link in which the wireless link fails.
  • the re-establishment request message sent by the sending unit includes the identifier information of the radio link that is expected by the UE, to indicate the desired radio link that is used by the UE to receive the re-establishment message;
  • the one or more downlink wireless links include: a radio link desired by the UE.
  • the re-establishment request message sent by the sending unit includes the identifier information of the radio link that is expected by the UE, to indicate the desired radio link that is used by the UE to receive the re-establishment message;
  • the UE may further include: a first acquiring unit, configured to acquire, by the establishing unit, a plurality of downlink wireless links, and obtain a plurality of downlink nodes in the plurality of communication nodes An identifier of one or more wireless links configured by the station, configured to indicate one or more wireless chains of the macro base station configuration for receiving a re-establishment message when a radio link failure occurs on the one downlink radio link Road
  • a first acquiring unit configured to acquire, by the establishing unit, a plurality of downlink wireless links, and obtain a plurality of downlink nodes in the plurality of communication nodes
  • An identifier of one or more wireless links configured by the station, configured to indicate one or more wireless chains of the macro base station configuration for receiving a re-establishment message when a radio link failure occurs on the one downlink radio link Road
  • the one or more downlink wireless links further include: a wireless link desired by the UE and one or more wireless links configured by the macro base station.
  • the UE may further include: a second acquiring unit, configured to acquire, by the establishing unit, a plurality of downlink wireless links between the multiple communication nodes, and obtain an acer base in the multiple communication nodes An identifier of one or more wireless links configured by the station, configured to indicate one or more wireless chains configured by the macro base station configured to receive a re-establishment message when a radio link failure occurs on the one downlink radio link Road
  • a second acquiring unit configured to acquire, by the establishing unit, a plurality of downlink wireless links between the multiple communication nodes, and obtain an acer base in the multiple communication nodes
  • An identifier of one or more wireless links configured by the station configured to indicate one or more wireless chains configured by the macro base station configured to receive a re-establishment message when a radio link failure occurs on the one downlink radio link Road
  • the one or more downlink wireless links are: one or more wireless links configured by the macro base station.
  • the one or more downlink wireless links are: one or more wireless links configured by the macro base station.
  • the UE may further include: a third acquiring unit, configured to acquire, by the establishing unit, a plurality of downlink wireless links, and obtain a plurality of downlink nodes in the multiple communication nodes An identifier of one or more wireless links configured by the station, configured to indicate that the one downlink wireless link is sent One or more wireless links configured by the macro base station configured to receive a re-establishment message when the radio link fails;
  • the re-establishment request message sent by the sending unit includes the identifier information of the radio link that is expected by the UE, to indicate the desired radio link that is used by the UE to receive the re-establishment message;
  • the receiving unit is further configured to: before receiving one or more re-establishment messages, receive a notification sent by the macro base station, where the notification is used to indicate one or more wireless configurations configured by the macro base station in the macro base station a link and a selected one of the desired wireless links;
  • the one or more downlink wireless links include: the selected wireless link.
  • the one or more radio links configured by the macro base station may include: the radio link specified by the macro base station in advance for each of the plurality of radio links; or And the macro base station pre-determines the same radio link specified for all radio links in the multiple radio links.
  • the acquiring, by the UE, the identifier of one or more radio links configured by the macro base station of the multiple communications nodes may include: receiving a macro base station by using a broadcast message, a radio resource control protocol, RRC signaling, An identifier of one or more radio links configured by the macro base station that is sent by at least one of the media access control control unit MACCE, the physical downlink control channel PDCCH command, and the enhanced physical downlink control channel ePDCCH command.
  • the one or more radio links configured by the macro base station may include: the downlink radio link that fails to generate a radio link.
  • the re-establishment request message may be forwarded to the one or more communication nodes by a communication node corresponding to an uplink radio link that can work normally; or, the re-establishment request message may also be A communication node corresponding to the uplink wireless link capable of functioning is forwarded to the one or more communication nodes via at least one communication node.
  • the identifier information of the radio link may include: a link identifier of the radio link, or a cell identifier of a cell where the radio link is located, or a signal status information reference of the radio link.
  • the wireless link may include: a radio link based on a cell specific reference signal CRS signal, or a CSI-RS based radio link, or a radio link that identifies a cell signal quality status, or identifies a TP signal quality.
  • FIG. 8 it is a block diagram of a second embodiment of a UE according to the present invention.
  • the UE may be a mobile phone.
  • the format of the UE may not be limited.
  • the data may be a data card or any other form of wireless terminal.
  • the UE includes: a wireless transceiver (Transceiver) 810 and a processor (Processor) 820.
  • the wireless transceiver 810 is configured to establish multiple downlink wireless links with multiple communication nodes.
  • the processor 820 is configured to send, when the radio link fails on the downlink radio link of the multiple downlink radio links, to the communication node corresponding to the working uplink radio link Establishing a request message, receiving one or more re-establishment messages returned by one or more communication nodes in response to the re-establishment request message on one or more downlink radio links, respectively, to complete the wireless chain according to the re-establishment message
  • the road is built again.
  • a downlink radio link, and an uplink radio link exists between the UE and a communication node; the one uplink radio link capable of working normally is different from the one uplink radio link, or the one can The communication node corresponding to the normally working uplink wireless link is different from the one communication node.
  • the one or more downlink wireless links are: the downlink wireless link in which the wireless link fails.
  • the downlink wireless link in which the wireless link fails.
  • the one or more downlink wireless links include: a radio link desired by the UE.
  • the processor is further configured to: after establishing multiple downlink wireless links between the wireless transceiver and the plurality of communication nodes, acquiring one or more wireless configurations configured by the macro base stations of the multiple communication nodes An identifier of the link, configured to indicate one or more wireless links configured by the macro base station for receiving a re-establishment message when a radio link failure occurs on the one downlink radio link;
  • the one or more downlink wireless links include: a radio link desired by the UE and one or more wireless links configured by the macro base station.
  • the processor is further configured to: after establishing multiple downlink wireless links between the wireless transceiver and the plurality of communication nodes, acquiring one or more wireless configurations configured by the macro base stations of the multiple communication nodes An identifier of the link, configured to indicate one or more wireless links configured by the macro base station configured to receive a re-establishment message when a radio link failure occurs on the one downlink radio link;
  • the one or more downlink wireless links are: one or more wireless links configured by the macro base station.
  • the one or more downlink wireless links are: one or more wireless links configured by the macro base station.
  • the processor is further configured to: after establishing multiple downlink wireless links between the wireless transceiver and the plurality of communication nodes, acquiring one or more wireless configurations configured by the macro base stations of the multiple communication nodes An identifier of the link, configured to indicate one or more wireless links configured by the macro base station configured to receive a re-establishment message when a radio link failure occurs on the one downlink radio link;
  • the re-establishment request message sent by the processor includes the identifier information of the radio link that is expected by the UE, to indicate the desired radio link that is required by the UE to receive the re-establishment message;
  • the processor is further configured to: before receiving the one or more re-establishment messages, receive a notification sent by the macro base station, where the notification is used to indicate one or more configurations of the macro base station in the macro base station Wireless links and selected ones of the desired wireless links;
  • the one or more downlink wireless links include: the selected wireless link.
  • the one or more radio links configured by the macro base station may include: the radio link specified by the macro base station in advance for each of the plurality of radio links; or And the macro base station pre-determines the same radio link specified for all radio links in the multiple radio links.
  • the acquiring, by the UE, the identifier of one or more radio links configured by the macro base station of the multiple communications nodes may include: receiving a macro base station by using a broadcast message, a radio resource control protocol, RRC signaling, An identifier of one or more radio links configured by the macro base station that is sent by at least one of the media access control control unit MACCE, the physical downlink control channel PDCCH command, and the enhanced physical downlink control channel ePDCCH command.
  • the one or more radio links configured by the macro base station may include: the downlink radio link that fails to generate a radio link.
  • the re-establishment request message may be forwarded to the one or more communication nodes by a communication node corresponding to an uplink radio link that can work normally; or, the re-establishment request message may also be The communication node corresponding to the uplink wireless link capable of working normally passes at least one The communication nodes are forwarded to the one or more communication nodes.
  • the identifier information of the radio link may include: a link identifier of the radio link, or a cell identifier of a cell where the radio link is located, or a signal status information reference of the radio link.
  • the wireless link may include: a radio link based on a cell specific reference signal CRS signal, or a CSI-RS based radio link, or a radio link that identifies a cell signal quality status, or identifies a TP signal quality.
  • the UE may be specifically a terminal device having a wireless communication function, such as a mobile phone, a PDA (Personal Digital Assistant).
  • a wireless communication function such as a mobile phone, a PDA (Personal Digital Assistant).
  • FIG. 9 a block diagram of an embodiment of a wireless link re-establishment system of the present invention is shown:
  • the system includes a plurality of communication nodes. For convenience of illustration, only the first communication node 910 and the second communication node 920 having established the wireless link are shown in FIG.
  • Each of the plurality of communication nodes in the system is configured to establish a downlink wireless link with the UE, so that the UE is in a downlink wireless link of the multiple downlink wireless links.
  • a radio link failure occurs, sending a re-establishment request message to a communication node corresponding to an uplink radio link that can work normally;
  • One or more of the plurality of communication nodes for responding to the re-establishment request message and returning one or more re-establishment messages to the UE on one or more downlink wireless links, respectively So that the UE completes radio link re-establishment according to the re-establishment message.
  • the one or more communication nodes include: the communication node corresponding to the downlink radio link that failed the radio link.
  • the re-establishment request message includes identifier information of a radio link expected by the UE, to indicate the desired radio link that is required by the UE to receive a re-establishment message;
  • the one or more communication nodes include: a communication node corresponding to a radio link desired by the UE.
  • a communication node corresponding to a radio link desired by the UE In another specific embodiment:
  • the re-establishment request message includes identifier information of a radio link that is expected by the UE, to indicate the desired radio link that is required by the UE to receive a re-establishment message; a macro base station of the plurality of communication nodes, configured to configure an identifier of one or more radio links, where the identifier of the radio link is used to indicate that a radio link failure occurs on the one downlink radio link One or more wireless links configured by the macro base station receiving the re-establishment message;
  • the one or more downlink radio links further include: a communication node corresponding to the radio link desired by the UE and one or more radio links configured by the macro base station.
  • a macro base station of the plurality of communication nodes configured to configure an identifier of one or more radio links, where the identifier of the radio link is used to indicate that a radio link failure occurs on the one downlink radio link
  • One or more wireless links configured by the macro base station receiving the re-establishment message
  • the re-establishment request message includes identifier information of a radio link expected by the UE, to indicate the desired radio link that is required by the UE to receive a re-establishment message;
  • the macro base station is further configured to send a notification to the UE, where the notification is used to indicate that the macro base station selects one or more radio links configured by the macro base station and the desired radio link.
  • Wireless link
  • the one or more downlink wireless links include: the selected wireless link.
  • the one or more radio links configured by the macro base station may include: a radio link that is specified by the macro base station in advance for each of the multiple radio links; or
  • the macro base station pre-determines the same wireless link designated for all of the plurality of wireless links.
  • the macro base station may be specifically configured to use at least a broadcast message, a radio resource control protocol RRC signaling, a medium access control control unit MACCE, a physical downlink control channel PDCCH command, and an enhanced physical downlink control channel ePDCCH command.
  • An information is transmitted that identifies an identity of one or more wireless links configured by the macro base station.
  • the re-establishment request message is forwarded to the one or more communication nodes by a communication node corresponding to an uplink radio link that can work normally; or the re-establishment request message is uplinked by a normal operation.
  • a communication node corresponding to the wireless link is forwarded to the one or more communication nodes via at least one communication node.
  • the identifier information of the radio link may include: a link identifier of the radio link, or a cell identifier of a cell where the radio link is located, or a signal status of the radio link.
  • the communication node may include: a cell, or a transmission point TP, or a base station, or an indoor baseband processing unit on the network side;
  • the wireless link may include: a radio link based on a cell specific reference signal CRS signal Or a CSI-RS based radio link, or a radio link that identifies a cell signal quality status, or a radio link that identifies a TP signal quality status, or a radio link that identifies a port signal quality status.
  • a plurality of downlink radio links are established between the UE and the plurality of communication nodes, and when the UE fails to perform radio link on one of the plurality of downlink radio links,
  • the communication node corresponding to the normally working uplink radio link transmits a re-establishment request message, and receives one or more re-establishment messages that the one or more communication nodes respectively return on one or more downlink radio links in response to the re-establishment request message.
  • the radio link re-establishment process is completed through the other at least one established radio link, so there is no need to send a random access scrambling code and wait
  • the random access response message returned by the cell does not need to obtain the radio resource for sending the RRC re-establishment request message in the next step by using the random access response message, thereby improving the efficiency of re-establishing the radio link of the UE.
  • the radio link described in the present invention fails, or the radio link re-establishment process, or the re-establishment request message of the radio link or the re-establishment message of the radio link, etc., may include including the RRC with the UE.
  • the connected radio link, the radio link with the DRB (Data Radio Bearer Carrying User Plane Data) link, and the radio link with the SRB (Signaling Radio Bearer Carrying User Plane Data) A radio link of a small base station or a secondary base station serving the UE, and a radio link not having an RRC link with the UE.
  • the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform.
  • the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, and the computer software product may be stored in a storage medium such as a ROM/RAM. , a diskette, an optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or in some portions of the embodiments.
  • a computer device which may be a personal computer, server, or network device, etc.

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Abstract

本发明实施例公开了无线链路重建立方法、UE及系统,所述方法包括:UE与多个通信节点之间分别建立多个下行无线链路;当UE在所述多个下行无线链路中的一个下行无线链路上发生无线链路失败时,向一个能够正常工作的上行无线链路对应的通信节点发送重建立请求消息;接收一个或多个通信节点响应于所述重建立请求消息分别在一个或多个下行无线链路上返回的一个或多个重建立消息,以根据所述重建立消息完成无线链路重建立。应用本发明实施例,可以提高UE无线链路重建立的效率。

Description

无线 ¼ ^重建立方法、 UE及系统
本申请要求于 2012 年 08 月 06 日提交中国专利局、 申请号为 201210277079.3、 发明名称为 "无线链路重建立方法、 UE及系统" 的中国专利 申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域, 特别是涉及无线链路重建立方法、 UE及系统。 背景技术
在 LTE ( Long Term Evolution, 长期演进) 中引入了 CoMP ( Coordinated
Multi-Point,协作多点传输)技术, 以提高数据传输速率。 在运用 CoMP技术的 CoMP通信系统中, 包括多个相互连接的基站, 这些基站可以是宏小区基站或者 微小区基站。 现有技术中, UE可以同时工作在多个载波上, 其中一个载波称为 主载波, 主载波对应的小区成为主小区该主载波可以调度 UE ( User Equipment, 用户设备)在其它载波上工作, 其中每个载波可以对应多个链路, 每个链路对 应一个通信节点, 该通信节点可以是上述宏小区基站或微小区基站。
现有技术中, 当 UE与主小区的链路发生无线链路失败时, 需要发起 RRC ( Radio Resource Control, 无线资源控制协议)过程, 对无线链路进行重建立。 此时 UE选择向一个合适的小区发送随机接入的扰码, 接收该小区发送的随机接 入响应消息后, 然后向该基站发送 RRC重建立请求消息, 若该基站回复了 RRC 重建立消息, 则完成无线链路重建立过程。 在通信领域, 一个无线链路是 UE与 一个通信节点之间的无线通信通道。 服务于该 UE的一个通信节点可以是基站, 例如宏基站或微基站, 微基站可以是 pico、 femto或家庭基站等。
在现有 UE无线链路重建立过程中, UE的无线链路重建立请求消息发送在哪 个小区, 就在对应的小区接收下行的响应消息, 并且 UE的无线链路重建立过程 只有在主小区发生无线链路失败的情况才会发生。但是在 CoMP场景下, 由于 UE 能力的提升, UE可以维护与多个无线链路之间的连接, 而现有技术仅在主小区 对应的基于 CRS ( Cell Specific Reference Signal, 小区具体参考信号)的无线链 路失败时, UE选择一个合适的小区发起无线链路重建立过程, 该过程需要基站 进行 RACH ( Random Access Channel, 随机接入信道)接入, 因此降低了 UE无 线链路重建立的效率。 发明内容
本发明实施例中提供了无线链路重建立方法、 UE及系统, 以解决现有技术 中无线链路重建立过程效率不高的问题。
为了解决上述技术问题, 本发明实施例公开了如下技术方案:
一方面, 提供一种无线链路重建立方法, 所述方法包括:
用户设备 UE与多个通信节点之间分别建立多个下行无线链路;
当所述 UE在所述多个下行无线链路中的一个下行无线链路上发生无线链路 失败时, 向一个能够正常工作的上行无线链路对应的通信节点发送重建立请求 消息;
所述 UE接收一个或多个通信节点响应于所述重建立请求消息分别在一个或 多个下行无线链路上返回的一个或多个重建立消息, 以根据所述重建立消息完 成无线链路重建立。
另一方面, 提供一种 UE, 所述 UE包括:
建立单元, 用于与所述通信节点之间分别建立多个下行无线链路; 发送单元, 用于当所述 UE在所述多个下行无线链路中的一个下行无线链路 上发生无线链路失败时, 向一个能够正常工作的上行无线链路对应的通信节点 发送重建立请求消息;
重建单元, 用于接收一个或多个通信节点响应于所述重建立请求消息分别 在一个或多个下行无线链路上返回的一个或多个重建立消息, 以根据所述重建 立消息完成无线链路重建立。
另一方面, 提供另一种 UE, 所述 UE包括: 无线收发信机和处理器, 所述无线收发信机, 用于与多个通信节点之间分别建立多个下行无线链路, 并且
所述处理器, 用于当所述 UE在所述多个下行无线链路中的一个下行无线链 路上发生无线链路失败时, 向一个能够正常工作的上行无线链路对应的通信节 点发送重建立请求消息, 接收一个或多个通信节点响应于所述重建立请求消息 分别在一个或多个下行无线链路上返回的一个或多个重建立消息, 以根据所述 重建立消息完成无线链路重建立。 又一方面, 提供一种无线链路重建立系统, 所述系统中包含多个通信节点, 所述多个通信节点中的每个通信节点, 用于与 UE之间建立下行无线链路, 以使所述 UE在所述多个下行无线链路中的一个下行无线链路上发生无线链路失 败时, 向一个能够正常工作的上行无线链路对应的通信节点发送重建立请求消 所述多个通信节点中的一个或多个通信节点, 用于响应所述重建立请求消 息, 并分别在一个或多个下行无线链路上向所述 UE返回一个或多个重建立消息 后, 以使所述 UE根据所述重建立消息完成无线链路重建立。
本发明实施例中, UE与多个通信节点之间分别建立多个下行无线链路, 当 UE在多个下行无线链路中的一个下行无线链路上发生无线链路失败时, 向一个 能够正常工作的上行无线链路对应的通信节点发送重建立请求消息, 接收一个 或多个通信节点响应于重建立请求消息分别在一个或多个下行无线链路上返回 的一个或多个重建立消息, 以根据重建立消息完成无线链路重建立。 由于本发 明实施例中, 当 UE在一个无线链路上发生无线链路失败时, 通过其它至少一个 已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接入扰码并等 待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息获得下一步 发送 RRC重建立请求消息的无线资源, 从而提高了 UE无线链路重建立的效率。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施 例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 对于本领 域普通技术人员而言, 在不付出创造性劳动性的前提下, 还可以根据这些附图 获得其他的附图。
图 1为本发明无线链路重建立方法的第一实施例流程图;
图 2为本发明无线链路重建立方法的第二实施例流程图;
图 3为本发明无线链路重建立方法的第三实施例流程图;
图 4为本发明无线链路重建立方法的第四实施例流程图;
图 5为本发明无线链路重建立方法的第五实施例流程图;
图 6为本发明无线链路重建立方法的第六实施例流程图;
图 7为本发明 UE的第一实施例框图; 图 8为本发明 UE的第二实施例框图;
图 9为本发明无线链路重建立系统的实施例框图。 具体实施方式
本发明如下实施例提供了无线链路重建立方法、 UE及系统, 以提高无线链 路重建立的效率。
为了使本技术领域的人员更好地理解本发明实施例中的技术方案, 并使本 发明实施例的上述目的、 特征和优点能够更加明显易懂, 下面结合附图对本发 明实施例中技术方案作进一步详细的说明。
参见图 1 , 为本发明无线链路重建立方法的第一实施例流程图:
步骤 101: UE与多个通信节点之间分别建立多个下行无线链路。
可选的, 通信节点可以包括: 小区, 或者 TP ( Transport, 传输点), 或者基 站,或者网络侧的室内基带处理单元;其中,该 TP可以具体为 RRH( Remote Radio Head, 远端无线头)单元。
可选的, 所述无线链路可以包括: 基于 CRS的无线链路, 或者基于 CSI-RS
( Channel Statement Information- Reference Signal, 信道状态信息 -参考信号 ) 的 无线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状态 的无线链路, 或者标识端口信号质量状态的无线链路。
步骤 102:当 UE在多个下行无线链路中的一个下行无线链路上发生无线链路 失败时, 向一个能够正常工作的上行无线链路对应的通信节点发送重建立请求 消息。 间的下行无线链路, 且所述 UE与一个通信节点间还存在一个上行无线链路; 所 述一个能够正常工作的上行无线链路不同于所述一个上行无线链路, 或者所述 一个能够正常工作的上行无线链路对应的通信节点不同于所述一个通信节点。
可选的, 一个能够正常工作的上行无线链路包括: 基站为所述 UE配置的上 行无线链路; 或者, 所述 UE本地存储的指定的上行无线链路; 或者, 基站为所 述 UE配置的 UE发生无线链路失败时的发起无线链路重建立请求消息所用的无 线资源, 该无线资源可包括时域资源、 频域资源或空域资源。 其中, 所述基站 为所述 UE配置的无线链路或者所述无线链路所在小区、 UE本地存储的指定的无 线链路或者所述无线链路所在小区, 以及基站为所述 UE配置的无线资源, 与发 生无线链路失败的无线链路或者无线链路所在小区可以有某种映射关系, 例如, 一对一, 或者一对多, 或者多对一, 或者多对多, 在此不再赘述。 所述映射关 系可以由基站配置给 UE, 或者 UE本地存储。
步骤 103: UE接收一个或多个通信节点响应于所述重建立请求消息分别在一 个或多个下行无线链路上返回的一个或多个重建立消息, 以根据所述重建立消 息完成无线链路重建立。
可选的, 所述重建立请求消息被一个能够正常工作的上行无线链路对应的 通信节点转发至所述一个或多个通信节点; 或者所述重建立请求消息被一个能 够正常工作的上行无线链路对应的通信节点经过至少一个通信节点转发至所述 一个或多个通信节点。
可选的, 重建立消息包含了 UE的无线资源配置信息, UE后续接收的下行信 息, 即为根据这些无线资源配置信息接收到的下行数据。
由上述实施例可见, 当 UE在一个无线链路上发生无线链路失败时, 通过其 它至少一个已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接 入扰码并等待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息 获得下一步发送 RRC重建立请求消息的无线资源, 从而提高了 UE无线链路重建 立的效率。
参见图 2, 为本发明无线链路重建立方法的第二实施例流程图, 该实施例示 出了在发生无线链路失败的无线链路或无线链路所在小区进行无线链路重建立 的过程:
步骤 201: UE与多个通信节点之间分别建立多个下行无线链路。
可选的, 通信节点可以包括: 小区, 或者 TP, 或者基站, 或者网络侧的室 内基带处理单元; 可选的, 该 TP可以具体为 RRH单元。
可选的, 无线链路可以包括: 基于 CRS的无线链路, 或者基于 CSI-RS的无 线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状态的 无线链路, 或者标识端口信号质量状态的无线链路。 可选的,基于 CRS信号的无 线链路指 UE通过测量 CRS信号获得无线链路质量的链路, 基于 CSI-RS的无线链 路指 UE通过测量 CSI-RS获得无线链路质量的链路, 标识 TP信号质量状态的无线 链路指 UE通过测量 TP信号质量状态获得无线链路质量的链路, 标识端口信号质 量状态的无线链路指 UE通过测量端口信号质量状态获得无线链路质量的链路。 UE通过所获得的无线链路质量确定无线链路是否发生无线链路失败。
步骤 202: UE在多个下行无线链路中的一个下行无线链路上发生无线链路失 败。
步骤 203: UE向一个能够正常工作的上行无线链路对应的通信节点发送重建 立请求消息。
可选的, 一个能够正常工作的上行无线链路包括: 基站为所述 UE配置的上 行无线链路; 或者, 所述 UE本地存储的指定的上行无线链路; 或者, 基站为所 述 UE配置的 UE发生无线链路失败时的发起无线链路重建立请求消息所用的无 线资源, 该无线资源可包括时域资源、 频域资源或空域资源。 可选的, 所述基 站为所述 UE配置的无线链路或者所述无线链路所在小区、 UE本地存储的指定的 无线链路或者所述无线链路所在小区, 以及基站为所述 UE配置的无线资源, 与 发生无线链路失败的无线链路或者无线链路所在小区可以有某种映射关系, 例 如, 一对一, 或者一对多, 或者多对一, 或者多对多, 在此不再赘述。 所述映 射关系可以由基站配置给 UE, 或者 UE本地存储。
步骤 204: 接收发生无线链路失败的下行无线链路对应的通信节点响应于重 建立请求消息后, 在发生无线链路失败的下行无线链路上返回的重建立消息。
可选的, 该重建立请求消息可以被一个能够正常工作的上行无线链路对应 者, 该重建立请求消息也可以被一个能够正常工作的上行无线链路对应的通信 的通信节点。
步骤 205: UE根据接收到的重建立消息完成无线链路重建立。
本实施例中, UE可以在发生无线链路失败的下行无线链路上监听发生无线 链路失败的无线链路对应的通信节点下发的下行信息。
由上述实施例可见, 当 UE在一个无线链路上发生无线链路失败时, 通过其 它至少一个已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接 入扰码并等待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息 获得下一步发送 RRC重建立请求消息的无线资源, 从而提高了 UE无线链路重建 立的效率。 参见图 3, 为本发明无线链路重建立方法的第三实施例流程图, 该实施例示 出了在 UE被期望的无线链路或该无线链路所在小区进行无线链路重建立的过 程:
步骤 301: UE与多个通信节点之间分别建立多个下行无线链路。
可选的, 通信节点可以包括: 小区, 或者 TP, 或者基站, 或者网络侧的室 内基带处理单元; 可选的, 该 TP可以具体为 RRH单元。
可选的, 无线链路可以包括: 基于 CRS的无线链路, 或者基于 CSI-RS的无 线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状态的 无线链路, 或者标识端口信号质量状态的无线链路。 可选的,基于 CRS信号的无 线链路指 UE通过测量 CRS信号获得无线链路质量的链路, 基于 CSI-RS的无线链 路指 UE通过测量 CSI-RS获得无线链路质量的链路, 标识 TP信号质量状态的无线 链路指 UE通过测量 TP信号质量状态获得无线链路质量的链路, 标识端口信号质 量状态的无线链路指 UE通过测量端口信号质量状态获得无线链路质量的链路。 UE通过所获得的无线链路质量确定无线链路是否发生无线链路失败。
步骤 302: UE在一个下行无线链路上发生无线链路失败。
步骤 303: UE向一个能够正常工作的上行无线链路对应的通信节点发送重建 立请求消息, 该重建立请求消息中包含该 UE期望的无线链路的标识信息, 以指 示 UE期望的用于接收重建立消息的所述期望的无线链路。
可选的, 无线链路的标识信息可以包括: 所述无线链路的链路标识, 或者 所述无线链路所在小区的小区标识, 或者所述无线链路的信号状态信息参考信 号 CSI-RS配置信息或者标识信息, 或者所述无线链路的载频信息, 或者所述无 线链路对应的通信节点的标识信息。
可选的, 一个能够正常工作的上行无线链路包括: 基站为所述 UE配置的上 行无线链路; 或者, 所述 UE本地存储的指定的上行无线链路; 或者, 基站为所 述 UE配置的 UE发生无线链路失败时的发起无线链路重建立请求消息所用的无 线资源, 该无线资源可包括时域资源、 频域资源或空域资源。 可选的, 所述基 站为所述 UE配置的无线链路或者所述无线链路所在小区、 UE本地存储的指定的 无线链路或者所述无线链路所在小区, 以及基站为所述 UE配置的无线资源, 与 发生无线链路失败的无线链路或者无线链路所在小区可以有某种映射关系, 例 如, 一对一, 或者一对多, 或者多对一, 或者多对多, 在此不再赞述。 所述映 射关系可以由基站配置给 UE, 或者 UE本地存储。 路的标识信息。
步骤 304: 接收 UE期望的无线链路对应的通信节点响应于重建立请求消息, 在该期望的无线链路上返回的重建立消息。
可选的, 该重建立请求消息可以被一个能够正常工作的上行无线链路对应 的通信节点转发至所述 UE期望的无线链路对应的通信节点; 或者, 该重建立请 求消息也可以被一个能够正常工作的上行无线链路对应的通信节点经过至少一 个通信节点转发至所述 UE期望的无线链路对应的通信节点。
步骤 305: UE根据接收到的重建立消息完成无线链路重建立。
本实施例中, UE可以在 UE期望的无线链路上监听该期望的无线链路对应的 通信节点下发的下行信息。
由上述实施例可见, 当 UE在一个无线链路上发生无线链路失败时, 通过其 它至少一个已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接 入扰码并等待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息 获得下一步发送 RRC重建立请求消息的无线资源, 从而提高了 UE无线链路重建 立的效率。
参见图 4, 为本发明无线链路重建立方法的第四实施例流程图, 该实施例示 出了在预先指定的无线链路后该无线链路所在小区进行无线链路重建立的过 程:
步骤 401: UE与多个通信节点之间分别建立多个下行无线链路。
可选的, 通信节点可以包括: 小区, 或者 TP, 或者基站, 或者网络侧的室 内基带处理单元; 可选的, 该 TP可以具体为 RRH单元。
可选的, 无线链路可以包括: 基于 CRS的无线链路, 或者基于 CSI-RS的无 线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状态的 无线链路, 或者标识端口信号质量状态的无线链路。 可选的,基于 CRS信号的无 线链路指 UE通过测量 CRS信号获得无线链路质量的链路, 基于 CSI-RS的无线链 路指 UE通过测量 CSI-RS获得无线链路质量的链路, 标识 TP信号质量状态的无线 链路指 UE通过测量 TP信号质量状态获得无线链路质量的链路, 标识端口信号质 量状态的无线链路指 UE通过测量端口信号质量状态获得无线链路质量的链路。 UE通过所获得的无线链路质量确定无线链路是否发生无线链路失败。 步骤 402: UE获取由多个通信节点中的宏基站配置的一个或多个无线链路的 标识, 用于指示在所述一个下行无线链路上发生无线链路失败时用于接收重建 立消息的该宏基站配置的一个或多个无线链路。
可选的, 所述宏基站配置的一个或多个无线链路可以包括: 所述宏基站预 先为所述多个无线链路中的每个无线链路分别指定的无线链路; 或者, 所述宏 基站预先为所述多个无线链路中的所有无线链路指定的同一个无线链路。
可选的, 所述 UE获取由所述多个通信节点中的宏基站配置的一个或多个无 线链路的标识可以包括: 接收宏基站通过广播消息、 无线资源控制协议 RRC信 令、 媒体接入控制控制单元 MACCE ( Medium Access Control Control Element, 介质访问控制层控制要素)、 物理下行控制信道 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道)命令、 增强物理下行控制信道 ePDCCH ( enhanced-PDCCH, 增强的 PDCCH )命令中至少一种信息发送的所述宏基站配 置的一个或多个无线链路的标识。 可选的, 所述宏基站配置的一个或多个无线 步骤 403: UE在一个下行无线链路上发生无线链路失败。
步骤 404: UE向一个能够正常工作的上行无线链路对应的通信节点发送重建 立请求消息。
可选的, 一个能够正常工作的上行无线链路包括: 基站为所述 UE配置的上 行无线链路; 或者, 所述 UE本地存储的指定的上行无线链路; 或者, 基站为所 述 UE配置的 UE发生无线链路失败时的发起无线链路重建立请求消息所用的无 线资源, 该无线资源可包括时域资源、 频域资源或空域资源。 可选的, 所述基 站为所述 UE配置的无线链路或者所述无线链路所在小区、 UE本地存储的指定的 无线链路或者所述无线链路所在小区, 以及基站为所述 UE配置的无线资源, 与 发生无线链路失败的无线链路或者无线链路所在小区可以有某种映射关系, 例 如, 一对一, 或者一对多, 或者多对一, 或者多对多, 在此不再赘述。 所述映 射关系可以由基站配置给 UE, 或者 UE本地存储。 路的标识信息。
步骤 405: UE接收与宏基站配置的一个或多个无线链路对应的通信节点响应 于该重建立请求消息后, 在该宏基站配置的无线链路上返回的重建立消息。 可选的, 该重建立请求消息可以被一个能够正常工作的上行无线链路对应 的通信节点转发至所述宏基站配置的一个或多个无线链路对应的通信节点; 或 者, 该重建立请求消息也可以被一个能够正常工作的上行无线链路对应的通信 节点经过至少一个通信节点转发至所述宏基站配置的一个或多个无线链路对应 的通信节点。
步骤 406: UE根据接收的重建立消息完成无线链路重建立。
本实施例中, 可以在宏基站配置的无线链路上监听所述宏基站配置的无线 链路对应的通信节点下发的下行信息。
由上述实施例可见, 当 UE在一个无线链路上发生无线链路失败时, 通过其 它至少一个已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接 入扰码并等待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息 获得下一步发送 RRC重建立请求消息的无线资源, 从而提高了 UE无线链路重建 立的效率。
参见图 5, 为本发明无线链路重建立方法的第五实施例流程图, 该实施例示 出了在 UE期望的无线链路或预先指定的无线链路进行无线链路重建立的过程: 步骤 501: UE与多个通信节点之间分别建立多个下行无线链路。
可选的, 通信节点可以包括: 小区, 或者 TP, 或者基站, 或者网络侧的室 内基带处理单元; 可选的, 该 TP可以具体为 RRH单元。
可选的, 无线链路可以包括: 基于 CRS的无线链路, 或者基于 CSI-RS的无 线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状态的 无线链路, 或者标识端口信号质量状态的无线链路。
步骤 502: UE获取由多个通信节点中的宏基站配置的一个或多个无线链路的 标识, 用于指示在一个下行无线链路上发生无线链路失败时用于接收重建立消 息的该宏基站配置的一个或多个无线链路。
可选的, 所述宏基站配置的一个或多个无线链路可以包括: 所述宏基站预 先为所述多个无线链路中的每个无线链路分别指定的无线链路; 或者, 所述宏 基站预先为所述多个无线链路中的所有无线链路指定的同一个无线链路。
可选的, 所述 UE获取由所述多个通信节点中的宏基站配置的一个或多个无 线链路的标识可以包括: 接收宏基站通过广播消息、 无线资源控制协议 RRC信 令、媒体接入控制控制单元 MACCE、 物理下行控制信道 PDCCH命令、增强物理 下行控制信道 ePDCCH命令中至少一种信息发送的所述宏基站配置的一个或多 个无线链路的标识。 可选的, 所述宏基站配置的一个或多个无线链路中可以包 括所述发生无线链路失败的下行无线链路。
步骤 503: UE在一个下行无线链路上发生无线链路失败。
步骤 504: UE向一个能够正常工作的上行无线链路对应的通信节点发送重建 立请求消息, 该重建立请求消息中包含该 UE期望的无线链路的标识信息, 以指 示 UE期望的用于接收重建立消息的所述期望的无线链路。
可选的, 无线链路的标识信息可以包括: 所述无线链路的链路标识, 或者 所述无线链路所在小区的小区标识, 或者所述无线链路的信号状态信息参考信 号 CSI-RS配置信息或者标识信息, 或者所述无线链路的载频信息, 或者所述无 线链路对应的通信节点的标识信息。
可选的, 一个能够正常工作的上行无线链路包括: 基站为所述 UE配置的上 行无线链路; 或者, 所述 UE本地存储的指定的上行无线链路; 或者, 基站为所 述 UE配置的 UE发生无线链路失败时的发起无线链路重建立请求消息所用的无 线资源, 该无线资源可包括时域资源、 频域资源或空域资源。 可选的, 所述基 站为所述 UE配置的无线链路或者所述无线链路所在小区、 UE本地存储的指定的 无线链路或者所述无线链路所在小区, 以及基站为所述 UE配置的无线资源, 与 发生无线链路失败的无线链路或者无线链路所在小区可以有某种映射关系, 例 如, 一对一, 或者一对多, 或者多对一, 或者多对多, 在此不再赞述。 所述映 射关系可以由基站配置给 UE, 或者 UE本地存储。 路的标识信息。
步骤 505: UE在宏基站配置的无线链路上接收重建立消息, 以及在 UE期望 的无线链路上接收重建立消息。
可选的, 重建立请求消息可以被一个能够正常工作的上行无线链路对应的 通信节点转发至所述 UE期望的无线链路对应的通信节点以及所述宏基站配置的 无线链路对应的通信节点; 或者, 该重建立请求消息也可以被一个能够正常工 作的上行无线链路对应的通信节点经过至少一个通信节点转发至所述 UE期望的 无线链路对应的通信节点以及所述宏基站配置的无线链路对应的通信节点。 步骤 506: UE根据接收到的重建立消息完成无线链路重建立。
本实施例中, UE可以同时在 UE期望的无线链路, 以及宏基站配置的无线链 路上接收重建立消息, 尤其当 UE期望的无线链路对应的通信节点与宏基站配置 的无线链路对应的通信节点为不同的通信节点时, UE可以选择在先回复重建立 消息的通信节点对应的无线链路上监听下行信息。
由上述实施例可见, 当 UE在一个无线链路上发生无线链路失败时, 通过其 它至少一个已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接 入扰码并等待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息 获得下一步发送 RRC重建立请求消息的无线资源, 从而提高了 UE无线链路重建 立的效率。
参见图 6, 为本发明无线链路重建立方法的第六实施例流程图, 该实施例示 出了在网络侧选择的无线链路或无线链路所在小区进行无线链路重建立的过 程:
步骤 601: UE与多个通信节点之间分别建立多个下行无线链路。
可选的, 通信节点可以包括: 小区, 或者 TP, 或者基站, 或者网络侧的室 内基带处理单元; 可选的, 该 TP可以具体为 RRH单元。
可选的, 所述无线链路可以包括: 基于 CRS的无线链路, 或者基于 CSI-RS 的无线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状 态的无线链路, 或者标识端口信号质量状态的无线链路。 可选的,基于 CRS信号 的无线链路指 UE通过测量 CRS信号获得无线链路质量的链路, 基于 CSI-RS的无 线链路指 UE通过测量 CSI-RS获得无线链路质量的链路, 标识 TP信号质量状态的 无线链路指 UE通过测量 TP信号质量状态获得无线链路质量的链路, 标识端口信 号质量状态的无线链路指 UE通过测量端口信号质量状态获得无线链路质量的链 路。 UE通过所获得的无线链路质量确定无线链路是否发生无线链路失败。
步骤 602: UE获取由多个通信节点中的宏基站配置的一个或多个无线链路的 标识, 用于指示在一个下行无线链路上发生无线链路失败时用于接收重建立消 息的该宏基站配置的一个或多个无线链路。
可选的, 所述宏基站配置的一个或多个无线链路可以包括: 所述宏基站预 先为所述多个无线链路中的每个无线链路分别指定的无线链路; 或者, 所述宏 基站预先为所述多个无线链路中的所有无线链路指定的同一个无线链路。 可选的, 所述 UE获取由所述多个通信节点中的宏基站配置的一个或多个无 线链路的标识可以包括: 接收宏基站通过广播消息、 无线资源控制协议 RRC信 令、媒体接入控制控制单元 MACCE、 物理下行控制信道 PDCCH命令、增强物理 下行控制信道 ePDCCH命令中至少一种信息发送的所述宏基站配置的一个或多 个无线链路的标识。 可选的, 所述宏基站配置的一个或多个无线链路中可以包 括所述发生无线链路失败的下行无线链路。
步骤 603: UE在一个下行无线链路上发生无线链路失败。
步骤 604: UE向一个能够正常工作的上行无线链路对应的通信节点发送重建 立请求消息, 该重建立请求消息中包含该 UE期望的无线链路的标识信息, 以指 示 UE期望的用于接收重建立消息的所述期望的无线链路。
可选的, 无线链路的标识信息可以包括: 所述无线链路的链路标识, 或者 所述无线链路所在小区的小区标识, 或者所述无线链路的信号状态信息参考信 号 CSI-RS配置信息或者标识信息, 或者所述无线链路的载频信息, 或者所述无 线链路对应的通信节点的标识信息。
可选的, 一个能够正常工作的上行无线链路包括: 基站为所述 UE配置的上 行无线链路; 或者, 所述 UE本地存储的指定的上行无线链路; 或者, 基站为所 述 UE配置的 UE发生无线链路失败时的发起无线链路重建立请求消息所用的无 线资源, 该无线资源可包括时域资源、 频域资源或空域资源。 可选的, 所述基 站为所述 UE配置的无线链路或者所述无线链路所在小区、 UE本地存储的指定的 无线链路或者所述无线链路所在小区, 以及基站为所述 UE配置的无线资源, 与 发生无线链路失败的无线链路或者无线链路所在小区可以有某种映射关系, 例 如, 一对一, 或者一对多, 或者多对一, 或者多对多, 在此不再赘述。 所述映 射关系可以由基站配置给 UE, 或者 UE本地存储。 路的标识信息。
可选的, 重建立请求消息可以被一个能够正常工作的上行无线链路对应的 通信节点转发至所述 UE期望的无线链路对应的通信节点以及所述宏基站配置的 无线链路对应的通信节点; 或者, 该重建立请求消息也可以被一个能够正常工 作的上行无线链路对应的通信节点经过至少一个通信节点转发至所述 UE期望的 无线链路对应的通信节点以及所述宏基站配置的无线链路对应的通信节点。 步骤 605: UE接收宏基站发送的通知,该通知用于指示宏基站在该宏基站配 置的一个或多个无线链路和所述期望的无线链路中选择的无线链路。
步骤 606: UE接收与选择的无线链路对应的通信节点响应于该重建立请求消 息后, 在该选择的无线链路上返回的重建立消息。
步骤 607: UE根据接收到的重建立消息完成无线链路重建立。
本实施例中, UE在选择的无线链路上监听与选择的无线链路对应的通信节 点下发的下行信息。
由上述实施例可见, 当 UE在一个无线链路上发生无线链路失败时, 通过其 它至少一个已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接 入扰码并等待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息 获得下一步发送 RRC重建立请求消息的无线资源, 从而提高了 UE无线链路重建 立的效率。
本发明上述实施例可以应用在 CoMP系统中, 在 CoMP系统中, 多个通信节 点为一个 UE提供服务, 即该一个 UE可以与多个通信节点之间分别建立无线链 路, 应用本发明实施例, 当 UE在其中一个无线链路上发生无线链路失败时, 可 以通过所建立的多个无线链路中除发生无线链路的其它已建立的无线链路进行 无线链路的重建立。
与本发明无线链路重建立方法的实施例相对应, 本发明还提供了 UE和无线 链路重建立系统的实施例。
参见图 7, 为本发明 UE的第一实施例框图, 该 UE可以用于执行前述本发明 无线链路重建立方法的实施例。
该 UE包括: 建立单元 710、 发送单元 720和重建单元 730。
其中,建立单元 710,用于与所述通信节点之间分别建立多个下行无线链路; 发送单元 720,用于当所述 UE在所述多个下行无线链路中的一个下行无线链 路上发生无线链路失败时, 向一个能够正常工作的上行无线链路对应的通信节 点发送重建立请求消息;
重建单元 730, 用于接收一个或多个通信节点响应于所述重建立请求消息分 别在一个或多个下行无线链路上返回的一个或多个重建立消息, 以根据所述重 建立消息完成无线链路重建立。 间的下行无线链路, 且所述 UE与一个通信节点间还存在一个上行无线链路; 所 述一个能够正常工作的上行无线链路不同于所述一个上行无线链路, 或者所述 一个能正常工作的上行无线链路对应的通信节点不同于所述一个通信节点。
在一个具体的实施例中:
所述一个或多个下行无线链路为: 所述发生无线链路失败的下行无线链路。 在另一个具体的实施例中:
所述发送单元发送的重建立请求消息中包含所述 UE期望的无线链路的标识 信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述一个或多个下行无线链路包括: 所述 UE期望的无线链路。
在另一个具体的实施例中:
所述发送单元发送的重建立请求消息中包含所述 UE期望的无线链路的标识 信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
可选的, 所述 UE还可以包括: 第一获取单元, 用于所述建立单元与多个通 信节点之间分别建立多个下行无线链路后 , 获取由所述多个通信节点中的宏基 站配置的一个或多个无线链路的标识, 用于指示在所述一个下行无线链路上发 生无线链路失败时用于接收重建立消息的所述宏基站配置的一个或多个无线链 路;
所述一个或多个下行无线链路还包括: 所述 UE期望的无线链路和所述宏基 站配置的一个或多个无线链路。
在另一个具体的实施例中:
可选的, 所述 UE还可以包括: 第二获取单元, 用于所述建立单元与多个通 信节点之间分别建立多个下行无线链路后 , 获取由所述多个通信节点中的宏基 站配置的一个或多个无线链路的标识, 用于指示在所述一个下行无线链路上发 生无线链路失败时被配置接收重建立消息的所述宏基站配置的一个或多个无线 链路;
所述一个或多个下行无线链路为: 所述宏基站配置的一个或多个无线链路。 在另一个具体的实施例中:
可选的, 所述 UE还可以包括: 第三获取单元, 用于所述建立单元与多个通 信节点之间分别建立多个下行无线链路后 , 获取由所述多个通信节点中的宏基 站配置的一个或多个无线链路的标识, 用于指示在所述一个下行无线链路上发 生无线链路失败时被配置接收重建立消息的所述宏基站配置的一个或多个无线 链路;
所述发送单元发送的重建立请求消息中包含所述 UE期望的无线链路的标识 信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述接收单元, 还用于在接收一个或多个重建立消息前, 接收所述宏基站 发送的通知, 所述通知用于指示所述宏基站在所述宏基站配置的一个或多个无 线链路和所述期望的无线链路中选择的无线链路;
所述一个或多个下行无线链路包括: 所述选择的无线链路。
在上述实施例中, 所述宏基站配置的一个或多个无线链路可以包括: 所述 宏基站预先为所述多个无线链路中的每个无线链路分别指定的无线链路; 或者, 所述宏基站预先为所述多个无线链路中的所有无线链路指定的同一个无线链 路。
在上述实施例中, 所述 UE获取由所述多个通信节点中的宏基站配置的一个 或多个无线链路的标识可以包括: 接收宏基站通过广播消息、 无线资源控制协 议 RRC信令、 媒体接入控制控制单元 MACCE、 物理下行控制信道 PDCCH命令、 增强物理下行控制信道 ePDCCH命令中至少一种信息发送的所述宏基站配置的 一个或多个无线链路的标识。
在上述实施例中, 所述宏基站配置的一个或多个无线链路可以包括: 所述 发生无线链路失败的下行无线链路。
在上述实施例中, 所述重建立请求消息可以被一个能够正常工作的上行无 线链路对应的通信节点转发至所述一个或多个通信节点; 或者, 所述重建立请 求消息也可以被一个能够正常工作的上行无线链路对应的通信节点经过至少一 个通信节点转发至所述一个或多个通信节点。
在上述实施例中, 所述无线链路的标识信息可以包括: 所述无线链路的链 路标识, 或者所述无线链路所在小区的小区标识, 或者所述无线链路的信号状 态信息参考信号 CSI-RS配置信息或者标识信息, 或者所述无线链路的载频信息, 或者所述无线链路对应的通信节点的标识信息。
可选的,所述无线链路可以包括:基于小区具体参考信号 CRS信号的无线链 路, 或者基于 CSI-RS的无线链路, 或者标识小区信号质量状态的无线链路, 或 者标识 TP信号质量状态的无线链路, 或者标识端口信号质量状态的无线链路。 参见图 8, 为本发明 UE的第二实施例框图, 该 UE具体可以是一个手机, 当 然其形态不作为一种限定, 其也可以是数据卡或其他任意形态的无线终端。
该 UE包括: 无线收发信机 ( Transceiver ) 810和处理器(Processor ) 820。 其中, 无线收发信机 810, 用于与多个通信节点之间分别建立多个下行无线 链路 ^
处理器 820,用于当所述 UE在所述多个下行无线链路中的一个下行无线链路 上发生无线链路失败时, 向一个能够正常工作的上行无线链路对应的通信节点 发送重建立请求消息, 接收一个或多个通信节点响应于所述重建立请求消息分 别在一个或多个下行无线链路上返回的一个或多个重建立消息, 以根据所述重 建立消息完成无线链路重建立。 间的下行无线链路, 且所述 UE与一个通信节点间还存在一个上行无线链路; 所 述一个能够正常工作的上行无线链路不同于所述一个上行无线链路, 或者所述 一个能够正常工作的上行无线链路对应的通信节点不同于所述一个通信节点。
在一个具体的实施例中:
所述一个或多个下行无线链路为: 所述发生无线链路失败的下行无线链路。 在另一个具体的实施例中:
所述处理器接收到的重建立请求消息中包含所述 UE期望的无线链路的标识 信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述一个或多个下行无线链路包括: 所述 UE期望的无线链路。
在另一个具体的实施例中:
所述处理器接收到的重建立请求消息中包含所述 UE期望的无线链路的标识 信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述处理器, 还用于所述无线收发信机与多个通信节点之间分别建立多个 下行无线链路后, 获取由所述多个通信节点中的宏基站配置的一个或多个无线 链路的标识, 用于指示在所述一个下行无线链路上发生无线链路失败时用于接 收重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路包括: 所述 UE期望的无线链路和所述宏基站 配置的一个或多个无线链路。
在另一个具体的实施例中: 所述处理器, 还用于所述无线收发信机与多个通信节点之间分别建立多个 下行无线链路后, 获取由所述多个通信节点中的宏基站配置的一个或多个无线 链路的标识, 用于指示在所述一个下行无线链路上发生无线链路失败时被配置 接收重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路为: 所述宏基站配置的一个或多个无线链路。 在另一个具体的实施例中:
所述处理器, 还用于所述无线收发信机与多个通信节点之间分别建立多个 下行无线链路后, 获取由所述多个通信节点中的宏基站配置的一个或多个无线 链路的标识, 用于指示在所述一个下行无线链路上发生无线链路失败时被配置 接收重建立消息的所述宏基站配置的一个或多个无线链路;
所述处理器发送的重建立请求消息中包含所述 UE期望的无线链路的标识信 息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述处理器, 还用于在接收所述一个或多个重建立消息前, 接收所述宏基 站发送的通知, 所述通知用于指示所述宏基站在所述宏基站配置的一个或多个 无线链路和所述期望的无线链路中选择的无线链路;
所述一个或多个下行无线链路包括: 所述选择的无线链路。
在上述实施例中, 所述宏基站配置的一个或多个无线链路可以包括: 所述 宏基站预先为所述多个无线链路中的每个无线链路分别指定的无线链路; 或者, 所述宏基站预先为所述多个无线链路中的所有无线链路指定的同一个无线链 路。
在上述实施例中, 所述 UE获取由所述多个通信节点中的宏基站配置的一个 或多个无线链路的标识可以包括: 接收宏基站通过广播消息、 无线资源控制协 议 RRC信令、 媒体接入控制控制单元 MACCE、 物理下行控制信道 PDCCH命令、 增强物理下行控制信道 ePDCCH命令中至少一种信息发送的所述宏基站配置的 一个或多个无线链路的标识。
在上述实施例中, 所述宏基站配置的一个或多个无线链路可以包括: 所述 发生无线链路失败的下行无线链路。
在上述实施例中, 所述重建立请求消息可以被一个能够正常工作的上行无 线链路对应的通信节点转发至所述一个或多个通信节点; 或者, 所述重建立请 求消息也可以被一个能够正常工作的上行无线链路对应的通信节点经过至少一 个通信节点转发至所述一个或多个通信节点。
在上述实施例中, 所述无线链路的标识信息可以包括: 所述无线链路的链 路标识, 或者所述无线链路所在小区的小区标识, 或者所述无线链路的信号状 态信息参考信号 CSI-RS配置信息或者标识信息, 或者所述无线链路的载频信息, 或者所述无线链路对应的通信节点的标识信息。
可选的,所述无线链路可以包括:基于小区具体参考信号 CRS信号的无线链 路, 或者基于 CSI-RS的无线链路, 或者标识小区信号质量状态的无线链路, 或 者标识 TP信号质量状态的无线链路, 或者标识端口信号质量状态的无线链路。
上述实施例中, UE可以具体为手机、 PDA ( Personal Digital Assistant, 个人 数字助理)等具有无线通信功能的终端设备。
参见图 9 , 为本发明无线链路重建立系统的实施例框图:
该系统中包含多个通信节点, 为了示例方便, 图 9中仅示出了已建立无线链 路的第一通信节点 910和第二通信节点 920。
其中, 该系统中的多个通信节点中的每个通信节点, 用于与 UE之间建立下 行无线链路, 以使所述 UE在所述多个下行无线链路中的一个下行无线链路上发 生无线链路失败时, 向一个能够正常工作的上行无线链路对应的通信节点发送 重建立请求消息;
所述多个通信节点中的一个或多个通信节点, 用于响应所述重建立请求消 息, 并分别在一个或多个下行无线链路上向所述 UE返回一个或多个重建立消息 后, 以使所述 UE根据所述重建立消息完成无线链路重建立。
在一个具体的实施例中:
所述一个或多个通信节点包括: 所述发生无线链路失败的下行无线链路对 应的通信节点。
在另一个具体的实施例中:
所述重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示所 述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述一个或多个通信节点包括: 所述 UE期望的无线链路对应的通信节点。 在另一个具体的实施例中:
所述重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示所 述 UE期望的用于接收重建立消息的所述期望的无线链路; 所述多个通信节点中的宏基站, 用于配置一个或多个无线链路的标识, 所 述无线链路的标识用于指示在所述一个下行无线链路上发生无线链路失败时用 于接收重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路还包括: 所述 UE期望的无线链路对应的通信 节点和所述宏基站配置的一个或多个无线链路。
在另一个具体的实施例中:
所述多个通信节点中的宏基站, 用于配置一个或多个无线链路的标识, 所 述无线链路的标识用于指示在所述一个下行无线链路上发生无线链路失败时用 于接收重建立消息的所述宏基站配置的一个或多个无线链路;
所述重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示所 述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述宏基站, 还用于向所述 UE发送通知, 所述通知用于指示所述宏基站在 所述宏基站配置的一个或多个无线链路和所述期望的无线链路中选择的无线链 路;
所述一个或多个下行无线链路包括: 所述选择的无线链路。
上述实施例中, 所述宏基站配置的一个或多个无线链路可以包括: 所述宏基站预先为所述多个无线链路中的每个无线链路分别指定的无线链 路; 或者,
所述宏基站预先为所述多个无线链路中的所有无线链路指定的同一个无线 链路。
上述实施例中, 所述宏基站, 可以具体用于通过广播消息、 无线资源控制 协议 RRC信令、媒体接入控制控制单元 MACCE、物理下行控制信道 PDCCH命令、 增强物理下行控制信道 ePDCCH命令中至少一种信息发送所述宏基站配置的一 个或多个无线链路的标识。
上述实施例中, 所述重建立请求消息被一个能够正常工作的上行无线链路 对应的通信节点转发至所述一个或多个通信节点; 或者所述重建立请求消息被 一个能够正常工作的上行无线链路对应的通信节点经过至少一个通信节点转发 至所述一个或多个通信节点。
上述实施例中, 所述无线链路的标识信息可以包括: 所述无线链路的链路 标识, 或者所述无线链路所在小区的小区标识, 或者所述无线链路的信号状态 信息参考信号 CSI-RS配置信息或者标识信息, 或者所述无线链路的载频信息, 或者所述无线链路对应的通信节点的标识信息。
上述实施例中, 所述通信节点可以包括: 小区, 或者传输点 TP, 或者基站, 或者网络侧的室内基带处理单元; 所述无线链路可以包括: 基于小区具体参考 信号 CRS信号的无线链路, 或者基于 CSI-RS的无线链路, 或者标识小区信号质 量状态的无线链路, 或者标识 TP信号质量状态的无线链路, 或者标识端口信号 质量状态的无线链路。
由上述实施例可见, UE与多个通信节点之间分别建立多个下行无线链路, 当 UE在多个下行无线链路中的一个下行无线链路上发生无线链路失败时, 向一 个能够正常工作的上行无线链路对应的通信节点发送重建立请求消息, 接收一 个或多个通信节点响应于重建立请求消息分别在一个或多个下行无线链路上返 回的一个或多个重建立消息, 以根据重建立消息完成无线链路重建立。 由于本 发明实施例中, 当 UE在一个无线链路上发生无线链路失败时, 通过其它至少一 个已建立的无线链路完成无线链路重建立过程, 因此无需发送随机接入扰码并 等待小区返回的随机接入响应消息, 进而无需通过随机接入响应消息获得下一 步发送 RRC重建立请求消息的无线资源,从而提高了 UE无线链路重建立的效率。
本发明描述的无线链路失败, 或者无线链路重建立过程, 或者无线链路的 重建立请求消息或者无线链路的重建立消息等在发明中涉及的无线链路, 可以 包括与 UE具有 RRC ( Radio Resource Control )连接的无线链路, 与 UE具有 DRB ( Data Radio Bearer Carrying User Plane Data , )链接的无线链路, 与 UE具有 SRB ( Signaling Radio Bearer Carrying User Plane Data, )链接的无线链路, 为 UE提供 服务的小型基站或辅基站的无线链路, 与 UE不具有 RRC链接的无线链路。
本领域的技术人员可以清楚地了解到本发明实施例中的技术可借助软件加 必需的通用硬件平台的方式来实现。 基于这样的理解, 本发明实施例中的技术 方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出 来, 该计算机软件产品可以存储在存储介质中, 如 ROM/RAM、 磁碟、 光盘等, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网 络设备等)执行本发明各个实施例或者实施例的某些部分所述的方法。
本说明书中的各个实施例均采用递进的方式描述, 各个实施例之间相同相 似的部分互相参见即可, 每个实施例重点说明的都是与其他实施例的不同之处。 尤其, 对于系统实施例而言, 由于其基本相似于方法实施例, 所以描述的比较 筒单, 相关之处参见方法实施例的部分说明即可。
以上所述的本发明实施方式, 并不构成对本发明保护范围的限定。 任何在 本发明的精神和原则之内所作的修改、 等同替换和改进等, 均应包含在本发明 的保护范围之内。
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Claims

权 利 要 求
1、 一种无线链路重建立方法, 其特征在于, 所述方法包括:
用户设备 UE与多个通信节点之间分别建立多个下行无线链路; 当所述 UE在所述多个下行无线链路中的一个下行无线链路上发生无线链 路失败时,向一个能够正常工作的上行无线链路对应的通信节点发送重建立请 求消息;
所述 UE接收一个或多个通信节点响应于所述重建立请求消息分别在一个 或多个下行无线链路上返回的一个或多个重建立消息,以根据所述重建立消息 完成无线链路重建立。
2、 根据权利要求 1所述的方法, 其特征在于, 所述发生无线链路失败的 下行无线链路为所述 UE与一个通信节点间的下行无线链路, 且所述 UE与一 个通信节点间还存在一个上行无线链路;
所述一个能够正常工作的上行无线链路不同于所述一个上行无线链路,或 者所述一个能够正常工作的上行无线链路对应的通信节点不同于所述一个通 信节点。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述一个或多个下行 无线链路为: 所述发生无线链路失败的下行无线链路。
4、 根据权利要求 1或 2所述的方法, 其特征在于,
所述重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示 所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述一个或多个下行无线链路包括: 所述 UE期望的无线链路。
5、 根据权利要求 4所述的方法, 其特征在于,
在 UE与多个通信节点之间分别建立多个下行无线链路后,所述方法还包 括:
所述 UE获取由所述多个通信节点中的宏基站配置的一个或多个无线链路 的标识,用于指示在所述一个下行无线链路上发生无线链路失败时用于接收重 建立消息的所述宏基站配置的一个或多个无线链路; 所述一个或多个下行无线链路还包括:所述宏基站配置的一个或多个无线 链路。
6、 根据权利要求 1或 2所述的方法, 其特征在于, 在 UE与多个通信节 点之间分别建立多个下行无线链路后, 所述方法还包括:
所述 UE获取由所述多个通信节点中的宏基站配置的一个或多个无线链路 的标识,用于指示在所述一个下行无线链路上发生无线链路失败时被配置接收 重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路为: 所述宏基站配置的一个或多个无线链 路。
7、 根据权利要求 1或 2所述的方法, 其特征在于, 在 UE与多个通信节 点之间分别建立多个下行无线链路后, 所述方法还包括: 所述 UE获取由所述 多个通信节点中的宏基站配置的一个或多个无线链路的标识,用于指示在所述 一个下行无线链路上发生无线链路失败时被配置接收重建立消息的所述宏基 站配置的一个或多个无线链路;
所述重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示 所述 UE期望的用于接收重建立消息的所述期望的无线链路;
在所述 UE接收一个或多个通信节点响应于所述重建立请求消息分别在一 个或多个下行无线链路上返回的一个或多个重建立消息前, 所述方法还包括: 所述 UE接收所述宏基站发送的通知,所述通知用于指示所述宏基站在所述宏 基站配置的一个或多个无线链路和所述期望的无线链路中选择的无线链路; 所述一个或多个下行无线链路包括: 所述选择的无线链路。
8、 根据权利要求 5-7 中任一项所述的方法, 其特征在于, 所述宏基站配 置的一个或多个无线链路包括:
所述宏基站预先为所述多个无线链路中的每个无线链路分别指定的无线 链路; 或者,
所述宏基站预先为所述多个无线链路中的所有无线链路指定的同一个无 线链路。
9、 根据权利要求 5-8中任一项所述的方法, 其特征在于, 所述 UE获取 由所述多个通信节点中的宏基站配置的一个或多个无线链路的标识包括: 接收宏基站通过广播消息、 无线资源控制协议 RRC信令、 媒体接入控制 控制单元 MACCE、 物理下行控制信道 PDCCH命令、 增强物理下行控制信道 ePDCCH命令中至少一种信息发送的所述宏基站配置的一个或多个无线链路 的标识。
10、 根据权利要求 5至 9任意一项所述的方法, 其特征在于, 所述宏基站 配置的一个或多个无线链路包括: 所述发生无线链路失败的下行无线链路。
11、 据权利要求 1至 10任意一项所述的方法, 其特征在于, 所述重建立 请求消息被一个能够正常工作的上行无线链路对应的通信节点转发至所述一 个或多个通信节点; 或者
所述重建立请求消息被一个能够正常工作的上行无线链路对应的通信节 点经过至少一个通信节点转发至所述一个或多个通信节点。
12、 根据权利要求 4至 10任意一项所述的方法, 其特征在于, 所述无线 链路的标识信息包括: 所述无线链路的链路标识, 或者所述无线链路所在小区 的小区标识, 或者所述无线链路的信号状态信息参考信号 CSI-RS配置信息或 者标识信息, 或者所述无线链路的载频信息, 或者所述无线链路对应的通信节 点的标识信息。
13、 根据权利要求 1至 12任意一项所述的方法, 其特征在于,
所述通信节点包括: 小区, 或者传输点 TP, 或者基站, 或者网络侧的室 内基带处理单元;
所述无线链路包括: 基于小区具体参考信号 CRS信号的无线链路, 或者 基于 CSI-RS的无线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状态的无线链路, 或者标识端口信号质量状态的无线链路。
14、 一种用户设备 UE, 其特征在于, 所述 UE包括:
建立单元, 用于与所述通信节点之间分别建立多个下行无线链路; 发送单元,用于当所述 UE在所述多个下行无线链路中的一个下行无线链 路上发生无线链路失败时,向一个能够正常工作的上行无线链路对应的通信节 点发送重建立请求消息;
重建单元,用于接收一个或多个通信节点响应于所述重建立请求消息分别 在一个或多个下行无线链路上返回的一个或多个重建立消息,以根据所述重建 立消息完成无线链路重建立。
15、根据权利要求 14所述的 UE, 其特征在于, 所述发生无线链路失败的 下行无线链路为所述 UE与一个通信节点间的下行无线链路, 且所述 UE与一 个通信节点间还存在一个上行无线链路;
所述一个能够正常工作的上行无线链路不同于所述一个上行无线链路,或 者所述一个能正常工作的上行无线链路对应的通信节点不同于所述一个通信 节点。
16、 根据权利要求 14或 15所述的 UE, 其特征在于, 所述一个或多个下 行无线链路为: 所述发生无线链路失败的下行无线链路。
17、 根据权利要求 14或 15所述的 UE, 其特征在于, 所述发送单元发送 的重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述一个或多个下行无线链路包括: 所述 UE期望的无线链路。
18、 根据权利要求 17所述的 UE, 其特征在于, 所述 UE还包括: 第一获取单元,用于所述建立单元与多个通信节点之间分别建立多个下行 无线链路后,获取由所述多个通信节点中的宏基站配置的一个或多个无线链路 的标识,用于指示在所述一个下行无线链路上发生无线链路失败时用于接收重 建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路还包括:所述宏基站配置的一个或多个无线 链路。
19、 根据权利要求 14或 15所述的 UE, 其特征在于, 所述 UE还包括: 第二获取单元,用于所述建立单元与多个通信节点之间分别建立多个下行 无线链路后,获取由所述多个通信节点中的宏基站配置的一个或多个无线链路 的标识,用于指示在所述一个下行无线链路上发生无线链路失败时被配置接收 重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路为: 所述宏基站配置的一个或多个无线链 路。
20、 根据权利要求 14或 15所述的 UE, 其特征在于, 所述 UE还包括: 第三获取单元,用于所述建立单元与多个通信节点之间分别建立多个下行 无线链路后,获取由所述多个通信节点中的宏基站配置的一个或多个无线链路 的标识,用于指示在所述一个下行无线链路上发生无线链路失败时被配置接收 重建立消息的所述宏基站配置的一个或多个无线链路;
所述发送单元发送的重建立请求消息中包含所述 UE期望的无线链路的标 识信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路; 所述接收单元,还用于在接收一个或多个重建立消息前,接收所述宏基站 发送的通知,所述通知用于指示所述宏基站在所述宏基站配置的一个或多个无 线链路和所述期望的无线链路中选择的无线链路;
所述一个或多个下行无线链路包括: 所述选择的无线链路。
21、 一种 UE, 其特征在于, 所述 UE包括: 无线收发信机和处理器, 所述无线收发信机, 用于与多个通信节点之间分别建立多个下行无线链 路;
所述处理器,用于当所述 UE在所述多个下行无线链路中的一个下行无线 链路上发生无线链路失败时,向一个能够正常工作的上行无线链路对应的通信 节点发送重建立请求消息,接收一个或多个通信节点响应于所述重建立请求消 息分别在一个或多个下行无线链路上返回的一个或多个重建立消息,以根据所 述重建立消息完成无线链路重建立。
22、根据权利要求 21所述的 UE, 其特征在于, 所述发生无线链路失败的 下行无线链路为所述 UE与一个通信节点间的下行无线链路, 且所述 UE与一 个通信节点间还存在一个上行无线链路;
所述一个能够正常工作的上行无线链路不同于所述一个上行无线链路,或 者所述一个能够正常工作的上行无线链路对应的通信节点不同于所述一个通 信节点。
23、 根据权利要求 21或 22所述的 UE, 其特征在于, 所述一个或多个下 行无线链路为: 所述发生无线链路失败的下行无线链路。
24、 根据权利要求 21或 22所述的 UE, 其特征在于, 所述处理器接收到 的重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述一个或多个下行无线链路包括: 所述 UE期望的无线链路。
25、 根据权利要求 24所述的 UE, 其特征在于,
所述处理器,还用于所述无线收发信机与多个通信节点之间分别建立多个 下行无线链路后,获取由所述多个通信节点中的宏基站配置的一个或多个无线 链路的标识,用于指示在所述一个下行无线链路上发生无线链路失败时用于接 收重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路还包括:所述宏基站配置的一个或多个无线 链路。
26、 根据权利要求 21或 22所述的 UE, 其特征在于,
所述处理器,还用于所述无线收发信机与多个通信节点之间分别建立多个 下行无线链路后,获取由所述多个通信节点中的宏基站配置的一个或多个无线 链路的标识,用于指示在所述一个下行无线链路上发生无线链路失败时被配置 接收重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路为: 所述宏基站配置的一个或多个无线链 路。
27、 根据权利要求 21或 22所述的 UE, 其特征在于,
所述处理器,还用于所述无线收发信机与多个通信节点之间分别建立多个 下行无线链路后,获取由所述多个通信节点中的宏基站配置的一个或多个无线 链路的标识,用于指示在所述一个下行无线链路上发生无线链路失败时被配置 接收重建立消息的所述宏基站配置的一个或多个无线链路; 所述处理器发送的重建立请求消息中包含所述 UE期望的无线链路的标识 信息, 以指示所述 UE期望的用于接收重建立消息的所述期望的无线链路; 所述处理器,还用于在接收所述一个或多个重建立消息前,接收所述宏基 站发送的通知,所述通知用于指示所述宏基站在所述宏基站配置的一个或多个 无线链路和所述期望的无线链路中选择的无线链路;
所述一个或多个下行无线链路包括: 所述选择的无线链路。
28、 一种无线链路重建立系统, 其特征在于, 所述系统中包含多个通信节 点,
所述多个通信节点中的每个通信节点,用于与 UE之间建立下行无线链路, 以使所述 UE在所述多个下行无线链路中的一个下行无线链路上发生无线链路 失败时,向一个能够正常工作的上行无线链路对应的通信节点发送重建立请求 消息;
所述多个通信节点中的一个或多个通信节点,用于响应所述重建立请求消 息, 并分别在一个或多个下行无线链路上向所述 UE返回一个或多个重建立消 息后, 以使所述 UE根据所述重建立消息完成无线链路重建立。
29、 根据权利要求 28所述的系统, 其特征在于, 所述一个或多个通信节 点包括: 所述发生无线链路失败的下行无线链路对应的通信节点。
30、 根据权利要求 28所述的系统, 其特征在于, 所述重建立请求消息中 包含所述 UE期望的无线链路的标识信息, 以指示所述 UE期望的用于接收重 建立消息的所述期望的无线链路;
所述一个或多个通信节点包括:所述 UE期望的无线链路对应的通信节点。
31、 根据权利要求 28或 30所述的系统, 其特征在于,
所述多个通信节点中的宏基站, 用于配置一个或多个无线链路的标识, 所 述无线链路的标识用于指示在所述一个下行无线链路上发生无线链路失败时 用于接收重建立消息的所述宏基站配置的一个或多个无线链路;
所述一个或多个下行无线链路还包括:所述宏基站配置的一个或多个无线 链路。
32、 根据权利要求 28所述的系统, 其特征在于,
所述多个通信节点中的宏基站, 用于配置一个或多个无线链路的标识, 所 述无线链路的标识用于指示在所述一个下行无线链路上发生无线链路失败时 用于接收重建立消息的所述宏基站配置的一个或多个无线链路;
所述重建立请求消息中包含所述 UE期望的无线链路的标识信息, 以指示 所述 UE期望的用于接收重建立消息的所述期望的无线链路;
所述宏基站, 还用于向所述 UE发送通知, 所述通知用于指示所述宏基站 在所述宏基站配置的一个或多个无线链路和所述期望的无线链路中选择的无 线链路;
所述一个或多个下行无线链路包括: 所述选择的无线链路。
33、 根据权利要求 30至 32任意一项所述的系统, 其特征在于, 所述宏基 站配置的一个或多个无线链路包括:
所述宏基站预先为所述多个无线链路中的每个无线链路分别指定的无线 链路; 或者,
所述宏基站预先为所述多个无线链路中的所有无线链路指定的同一个无 线链路。
34、 根据权利要求 30至 33任意一项所述的系统, 其特征在于, 所述宏基 站, 具体用于通过广播消息、 无线资源控制协议 RRC信令、 媒体接入控制控 制单元 MACCE、 物理下行控制信道 PDCCH命令、 增强物理下行控制信道 ePDCCH命令中至少一种信息发送所述宏基站配置的一个或多个无线链路的 标识。 34、 根据权利要求 28至 33任意一项所述的系统, 其特征在于, 所述重建立请求消息被一个能够正常工作的上行无线链路对应的通信节 点转发至所述一个或多个通信节点; 或者
所述重建立请求消息被一个能够正常工作的上行无线链路对应的通信节 点经过至少一个通信节点转发至所述一个或多个通信节点。
35、 根据权利要求 30至 34所述的系统, 其特征在于, 所述无线链路的标 识信息包括: 所述无线链路的链路标识, 或者所述无线链路所在小区的小区标 识, 或者所述无线链路的信号状态信息参考信号 CSI-RS配置信息或者标识信 息, 或者所述无线链路的载频信息, 或者所述无线链路对应的通信节点的标识 信息。
36、 根据权利要求 28至 35任意一项所述的系统, 其特征在于, 所述通信 节点包括: 小区, 或者传输点 TP, 或者基站, 或者网络侧的室内基带处理单 元;
所述无线链路包括: 基于小区具体参考信号 CRS信号的无线链路, 或者 基于 CSI-RS的无线链路, 或者标识小区信号质量状态的无线链路, 或者标识 TP信号质量状态的无线链路, 或者标识端口信号质量状态的无线链路。
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