WO2015027415A1 - 一种链路重建方法、用户设备及无线网络控制器 - Google Patents
一种链路重建方法、用户设备及无线网络控制器 Download PDFInfo
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- WO2015027415A1 WO2015027415A1 PCT/CN2013/082481 CN2013082481W WO2015027415A1 WO 2015027415 A1 WO2015027415 A1 WO 2015027415A1 CN 2013082481 W CN2013082481 W CN 2013082481W WO 2015027415 A1 WO2015027415 A1 WO 2015027415A1
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- 238000000034 method Methods 0.000 title claims abstract description 156
- 238000005259 measurement Methods 0.000 claims abstract description 68
- 230000008569 process Effects 0.000 claims abstract description 67
- 230000000977 initiatory effect Effects 0.000 claims abstract description 21
- 230000011664 signaling Effects 0.000 claims description 67
- 238000012790 confirmation Methods 0.000 claims description 20
- 230000004913 activation Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 abstract description 21
- 230000003993 interaction Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000010295 mobile communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
- H04W76/38—Connection release triggered by timers
Definitions
- the present application relates to the field of wireless communications, and in particular, to a link reconstruction method and a user equipment.
- Heterogeneous Network there is usually mutual interference between the macro cell and the initiating cell, especially for edge users.
- the serving cell sends the cell handover signaling to the case that the UE does not receive or fails to receive.
- the Radio Network Controller RNC
- the radio link signal is gradually attenuated, and the UE may not receive the cell handover signal sent by the network. make. In this way, when the link of the UE fails, the cell handover cannot be completed and the service is interrupted.
- the link re-establishment process of the prior art is as follows: After receiving the out-of-synchronization indication reported by the N313 physical layers, the UE's upper layer starts the link failure timer (T313), where N313 For integers greater than 0, the timing value of T313 is typically 0 to 15 seconds. If the UE does not receive N315 synchronization indications on the physical layer before T313 times out, it determines that the radio link failure (RRF).
- RRF radio link failure
- the UE initiates cell reselection, and the cell after the reselection initiates a cell update (CU) process by using the RLF reason, receives a cell update acknowledgement message, reestablishes a radio link in the reselected cell, and establishes a link to the network.
- the side sends a link setup response message.
- the applicant finds that at least the following problems exist in the prior art: Since the UE does not receive the cell handover signaling after sending the measurement report, it needs to wait for a sufficient out-of-synchronization indication and does not After the conditions that can be synchronized are met, the link re-establishment process can be triggered. Therefore, the service interruption time is longer after the cell handover fails. Summary of the invention
- the embodiments of the present application provide a link re-establishment method, a UE, and an RNC, which can quickly initiate a process of restoring a link, reduce the length of service interruption, and improve service quality.
- a first aspect of the present application provides a link re-establishment method, including: after a user equipment UE sends a measurement report to a radio network controller RNC, starting a first timer; if the first timer expires and the cell is not satisfied After the handover condition, cell reselection is performed and a cell update procedure is initiated to re-establish the radio link.
- the method further includes: terminating the first timer if the cell handover condition is met before the first timer expires.
- the unsatisfied cell handover condition includes: not receiving a cell when the first timer expires Switching signaling; or, when the first timer expires, the cell handover signaling is not received, and the signal to noise ratio or channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, when the first timer expires Cell handover signaling is not received, and the signal to noise ratio or channel quality indication CQI of the serving cell continues to be less than a predetermined threshold for a period of time.
- the initiating cell update process includes: sending a cell update message to an RNC corresponding to the reselected cell
- the reason for the update carried in the cell update message is The radio link fails the RLF, the cell handover failure HOF, or a specific value.
- the RNC in which the reselected cell is located may be an RNC different from the cell serving the UE when the UE sends the measurement report.
- the measurement report includes: a measurement report of 1A, 1B, 1C or ID event.
- the timing value of the first timer includes: a timing value of the first timer delivered by the network Or a timing value of the first timer pre-agreed by the UE and the network, or a first timer calculated by the UE according to the activation event offset value carried in the measurement report and the current connection frame number CFN of the UE.
- the method further includes: reading system broadcast information of the neighboring area, so as to The system broadcast information of the reselected cell is obtained before the cell update procedure is initiated.
- a second aspect of the present application provides a link re-establishment method, including: after a user equipment UE receives N313 out-of-synchronization indications, starting a second timer; wherein N313 is an integer greater than 0, and the second timing The timing value of the device is less than the timing value of the link failure timer T313; if the N315 synchronization indications are not received when the second timer expires, the cell reselection is performed and a cell update procedure is initiated to reestablish the wireless link. Where N315 is an integer greater than zero.
- the method further includes: If the N315 synchronization indications are received before the second timer expires, the second timer is terminated.
- the initiating cell update process includes: sending a cell update message to an RNC corresponding to the reselected cell And the update reason carried in the cell update message is a radio link failure RLF, a cell handover failure HOF, or a specific value; and receiving a cell update acknowledgement message sent by the RNC, so as to establish a radio link in the reselected cell.
- the timing value of the second timer includes: a timing value of the second timer delivered by the network The timing value of the second timer that is pre-agreed by the UE and the network, or the timing value of the second timer calculated by the UE according to the weighting factor sent by the network and the timing value of the link failure timer T313;
- the weighting factor is a non-negative number less than one.
- the method before the second timer is started, the method further includes: receiving the RNC to send One or more of the weighting factors; determining a weighting factor according to the state of the UE and the one or more weighting factors; calculating the second timer according to the determined weighting factor and the timing value of T313 Timing value.
- the third aspect of the present application provides a link re-establishment method, including: a radio network controller RNC, which sends a timing value of a first timer to a user equipment UE, where the first timer is used by the UE to determine the Performing cell reselection and initiating a cell update procedure when the first timer expires and does not satisfy the cell handover condition; receiving a cell update message sent by the UE, and sending a cell update acknowledgement message to the UE, to re-establish the radio link of the UE .
- RNC radio network controller
- the unsatisfied small The area handover condition includes: the UE does not receive the cell handover signaling when the first timer expires; or, when the first timer expires, the UE does not receive the cell handover signaling, and the serving cell
- the signal-to-noise ratio or channel quality indicator CQI is less than a predetermined threshold; or, the UE does not receive the cell handover signaling when the first timer expires, and the signal-to-noise ratio or channel quality indication CQI of the serving cell is in a period of time The duration continues to be less than the predetermined threshold.
- a fourth aspect of the present application provides a link re-establishment method, including: a radio network controller RNC sending a weighting factor for calculating a second timer to a user equipment UE; wherein the second timer is used for a supply Determining that the second timer expires when the N315 synchronization indications are not received, performing cell reselection and initiating a cell update procedure, where the N315 is an integer greater than 0; receiving a cell update message sent by the UE, to the The UE sends a cell update acknowledgement message to re-establish the radio link of the UE.
- a fifth aspect of the present application provides a user equipment UE, including: a transmitter, configured to send a measurement report to a radio network controller RNC; and a processor, configured to start a first timing after the transmitter sends a measurement report The processor is further configured to: when the first timer expires and the cell handover condition is not met, perform cell reselection and initiate a cell update procedure to re-establish a radio link.
- a user equipment UE including: a transmitter, configured to send a measurement report to a radio network controller RNC; and a processor, configured to start a first timing after the transmitter sends a measurement report
- the processor is further configured to: when the first timer expires and the cell handover condition is not met, perform cell reselection and initiate a cell update procedure to re-establish a radio link.
- the processor is further configured to: when the cell switching condition is met before the first timer expires, the first timer is terminated.
- the unsatisfied cell handover condition includes: not receiving a cell when the first timer expires Switching signaling; or, when the first timer expires, no cell handover signaling is received, and the signal to noise ratio or channel quality indicator CQI of the serving cell is less than a predetermined threshold; or The cell handover signaling is not received when the first timer expires, and the signal to noise ratio or channel quality indication CQI of the serving cell continues to be less than a predetermined threshold for a period of time.
- the processor is further configured to: after reselecting the cell, instructing the transmitter to be after reselection The cell sends a cell update message
- the transmitter is further configured to: send, by the processor, a cell update message to the RNC corresponding to the reselected cell, where the update reason carried in the cell update message is The radio link fails the RLF, the cell handover failure HOF, or the specific value.
- the UE further includes: a receiver, configured to receive a cell update acknowledgement message sent by the RNC, to establish a radio link in the reselected cell.
- the measurement report includes: 1A, 1B, 1C or a measurement report of an ID event.
- the UE further includes: a memory, configured to store a timing value of the first timer.
- the timing value of the first timer includes: a timing value of the first timer delivered by the network, or a timing value of the first timer that is pre-agreed by the UE and the network, or the UE according to the measurement
- the timing value of the first timer that is calculated by the activation event offset value carried in the report and the current connection frame number CFN of the UE, or the weighting factor delivered by the UE according to the network and the timing value of the link failure timer T313
- the calculated timing value of the first timer is calculated.
- the processor is further configured to trigger the receiver to receive after starting the first timer System broadcast information of the neighboring area; the receiver is further used in the processor The system broadcast of the receiving neighboring cell is triggered; the processor is further configured to read the system broadcast information of the neighboring cell from the system broadcast received by the receiver, so as to obtain the system broadcast of the reselected cell before initiating the cell update process information.
- a sixth aspect of the present application provides a user equipment UE, including: a receiver, configured to receive an out-of-synchronization indication and a synchronization indication; and a processor, configured to: after the receiver receives N313 out-of-synchronization indications, start a second timer; wherein N313 is an integer greater than 0, the timing value of the second timer is less than a timing value of the link failure timer T313; the processor is further configured to time out when the second timer expires When the receiver does not receive N315 synchronization indications, perform cell reselection and initiate a cell update procedure to re-establish a radio link; where N315 is an integer greater than 0.
- the processor is further configured to: when the first timer expires, the receiver When the N315 synchronization indications are received, the first timer is terminated.
- the UE further includes: a transmitter, where the processor is further configured to: after reselecting the cell The transmitter sends a cell update message to the re-selected pilot, and the transmitter is configured to send, by the processor, a cell update message to the RNC corresponding to the reselected cell, where the cell update
- the update reason carried in the message is a radio link failure RLF, a cell handover failure HOF, or a specific value.
- the receiver is further configured to receive a cell update confirmation message sent by the RNC, so as to establish a radio chain in the reselected cell. road.
- the UE further includes: a memory, configured to store a timing value of the second timer;
- the timing value of the second timer includes: a timing value of the second timer delivered by the network, a timing value of the second timer that is pre-agreed by the UE and the network, or a timing value of the second timer calculated by the UE according to a weighting factor sent by the network and a timing value of the link failure timer T313;
- the weighting factor is a non-negative number less than one.
- the receiver is further configured to: before the processor starts the second timer, Receiving one or more weighting factors that are sent by the RNC; the processor is further configured to determine a weighting factor according to a state in which the UE is located; and calculate, according to the determined weighting factor and a timing value of T313 The timing value of the two timers.
- the seventh aspect of the present application provides a radio network controller RNC, including: a transmitter, configured to send a timing value of a first timer to a user equipment UE, where the first timer is used by the UE to determine Performing cell reselection and initiating a cell update procedure when the first timer expires and the cell handover condition is not met; the receiver is configured to receive a cell update message sent by the UE, and send a cell update confirmation message to the UE, to re-establish the The wireless link of the UE.
- RNC radio network controller
- the unsatisfied cell handover condition includes: the UE does not receive the cell handover signaling when the first timer expires; or The UE does not receive the cell handover signaling when the first timer expires, and the signal-to-noise ratio or the channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, when the first timer expires, the UE does not The cell handover signaling is received, and the signal to noise ratio or channel quality indication CQI of the serving cell continues to be less than a predetermined threshold for a period of time.
- the eighth aspect of the present application provides a radio network controller RNC, including: a transmitter, configured to send, to a user equipment UE, a weighting factor for calculating a second timer, where the second timer is used for Determining, when the second timer expires that the N315 synchronization indications are not received, performing cell reselection and initiating a cell update process, where the N315 is an integer greater than 0; a receiver, configured to receive a cell update message sent by the UE, a processor, configured to generate a cell update acknowledgement message according to the cell update message received by the receiver, where the transmitter is further configured to send to the UE The cell update acknowledgement message generated by the processor to re-establish a radio link of the UE.
- a radio network controller RNC including: a transmitter, configured to send, to a user equipment UE, a weighting factor for calculating a second timer, where the second timer is used for Determining, when the second timer expires that
- a ninth aspect of the present application provides a user equipment UE, including: a timing unit, configured to: after transmitting a measurement report to a radio network controller RNC, start a first timer; and a reconstruction unit, configured to be used in the timing unit When the first timer expires and the cell handover condition is not met, cell reselection is performed and a cell update procedure is initiated to re-establish the radio link.
- a timing unit configured to: after transmitting a measurement report to a radio network controller RNC, start a first timer
- a reconstruction unit configured to be used in the timing unit
- the UE further includes: a terminating unit, configured to terminate the cell when the cell switch condition is met before the first timer of the timing unit expires a timer.
- the unsatisfied cell handover condition includes: when the first timer of the timing unit times out Receiving cell handover signaling; or, when the first timer of the timing unit times out, not receiving cell handover signaling, and the signal to noise ratio or channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, The first timer of the timing unit times out does not receive the cell handover signaling, and the signal to noise ratio or channel quality indication CQI of the serving cell continues to be less than the predetermined threshold for a period of time.
- the reconstructing unit includes: a reselecting subunit, configured to perform a first timing in the timing unit When the device times out and does not satisfy the cell handover condition, the cell reselection is performed; the sending subunit, where the cell after the reselection subunit reselection sends a cell update message to the RNC, where the cell update message is carried The reason for the update is the radio link failure RLF, cell handover a failing HOF or a specific value; a receiving subunit, configured to receive a cell update acknowledgement message sent by the RNC, to establish a radio link in the reselected cell.
- the measurement report includes: 1A, 1B, 1C or a measurement report of an ID event.
- the timing value of the first timer of the timing unit includes: a first timer sent by the network
- the timing value, or the timing value of the first timer preset by the UE and the network, or the UE is calculated according to the activation event offset value carried in the measurement report and the current connection frame number CFN of the UE.
- the UE further includes: a reading unit, after the timing unit starts the first timer And reading system broadcast information of the neighboring cell to obtain system broadcast information of the reselected cell before the reestablishing unit initiates the cell update process.
- the tenth aspect of the present application provides a user equipment UE, including: a timing unit, configured to start a second timer after receiving N313 out-of-synchronization indications; wherein N313 is an integer greater than 0, and the second The timing value of the timer is smaller than the timing value of the link failure timer T313.
- the reconstruction unit is configured to: when the second timer of the timing unit fails to receive N315 synchronization indications, perform cell reselection and initiate a cell update procedure. To re-establish a wireless link; where N315 is an integer greater than zero.
- the UE further includes: And a terminating unit, configured to terminate the second timer by receiving N315 synchronization indications before the second timer of the timing unit times out.
- the reconstructing unit includes: a reselecting subunit, configured to perform a second timing in the timing unit The cell reselection is performed when the N315 synchronization indications are not received before the timer expires; the sending subunit, where the cell after the reselection subunit reselection sends a cell update message to the RNC, where the cell update message The update reason carried in the radio link failure RLF, the cell handover failure HOF or the specific value; the receiving subunit, configured to receive the cell update acknowledgement message sent by the RNC, so as to establish a radio link in the reselected cell.
- the timing value of the second timer of the timing unit includes: a second timer sent by the network The timing value, the timing value of the second timer pre-agreed by the UE and the network, or the timing of the second timer calculated by the UE according to the weighting factor delivered by the network and the timing value of the link failure timer T313 Value; wherein the weighting factor is a non-negative number less than one.
- the method further includes: a receiving unit, configured to: before the timing unit starts the second timer Receiving, by the RNC, one or more of the weighting factors; a factor unit, configured to determine a weighting factor according to a state in which the UE is located and one or more of the weighting factors received by the receiving unit And a calculating unit, configured to calculate a timing value of the second timer according to the weighting factor determined by the factor unit and the timing value of T313.
- An eleventh aspect of the present application provides an RNC, including: a sending unit, configured to send a timing value of a first timer to a user equipment UE, where the first timer is used by the UE to determine the first Cell reselection and initiation when the timer expires and the cell handover condition is not met a receiving unit, configured to: after the sending unit sends the timing value of the first timer to the UE, receive a cell update message sent by the UE, and send a cell update confirmation message to the UE, to re-establish the cell The wireless link of the UE.
- a sending unit configured to send a timing value of a first timer to a user equipment UE, where the first timer is used by the UE to determine the first Cell reselection and initiation when the timer expires and the cell handover condition is not met
- a receiving unit configured to: after the sending unit sends the timing value of the first timer to the UE, receive a cell update message sent by the
- the unsatisfied cell handover condition includes: the UE does not receive the cell handover signaling when the first timer expires; or The UE does not receive the cell handover signaling when the first timer expires, and the signal to noise ratio or channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, when the first timer expires, the UE Cell handover signaling is not received, and the signal to noise ratio or channel quality indication CQI of the serving cell continues to be less than a predetermined threshold for a period of time.
- the twelfth aspect of the present application provides a radio network controller RNC, including: a sending unit, configured to send, to a user equipment UE, a weighting factor for calculating a second timer; wherein, the second timer is used by Performing cell reselection and initiating a cell update procedure when the UE determines that the second timer expires and does not receive N315 synchronization indications, where the N315 is an integer greater than 0; and the receiving unit is configured to send in the sending unit After the UE sends the weighting factor, the cell receives the cell update message sent by the UE, and sends a cell update confirmation message to the UE to re-establish the wireless link of the UE.
- RNC radio network controller
- the link re-establishment method, the UE, and the RNC provided by the embodiment of the present application start the first timer after the user equipment UE sends the measurement report to the radio network controller RNC, and the first timer expires and the cell is not satisfied.
- the handover condition is performed, the cell reselection is performed and the cell update process is initiated.
- the UE needs to wait for the radio link failure condition to satisfy the cell reselection, and the UE cell may be reduced without waiting for the out-of-synchronization indication and the synchronization indication.
- the link interruption time in the case of a handover failure can start the process of reestablishing the radio link more quickly, thereby reducing the service interruption delay caused by the cell handover failure and improving the quality of service.
- FIG. 1 is a flowchart of a link reconstruction method according to an embodiment of the present application
- FIG. 2 is a flowchart of a method for reconstructing a link in another embodiment of the present application
- FIG. 3 is a flowchart of a method for reconstructing a link in another embodiment of the present application.
- FIG. 4 is a flowchart of a method for reconstructing a link in another embodiment of the present application.
- FIG. 5 is a flowchart of a method for reconstructing a link in another embodiment of the present application.
- FIG. 6 is a flowchart of a method for reconstructing a link in another embodiment of the present application.
- FIG. 7 is a schematic diagram of the composition of a UE in another embodiment of the present application.
- FIG. 8 is a schematic diagram of the composition of a UE in another embodiment of the present application.
- Figure 9 is a schematic view showing the composition of the RNC in another embodiment of the present application.
- FIG. 10 is a schematic diagram of a RNC composition in another embodiment of the present application.
- FIG. 11 is a schematic structural diagram of a UE according to another embodiment of the present application.
- FIG. 12 is a schematic diagram of a UE composition in another embodiment of the present application.
- Figure 13 is a schematic diagram showing the composition of an RNC in another embodiment of the present application.
- FIG. 14 is a schematic diagram showing the composition of an RNC in another embodiment of the present application.
- GSM Global System for Mobile Communications
- CDMA Code Division Multiple Access
- CDMA Code Division Multiple
- TDMA Time Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency OFDMA (Orthogonal Frequency-Division Multiple Access) system
- SC-FDMA single carrier FDMA
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- the user equipment which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
- Wireless terminal can access the wireless access network
- a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
- a base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
- the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
- IP Internet Protocol
- the base station can also coordinate the management of the properties of the air interface.
- the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.
- the base station controller may be a base station controller (BSC) in GSM or CDMA, or may be a radio network controller (RNC) in WCDMA, which is not limited in this application.
- BSC base station controller
- RNC radio network controller
- system and “network” are used interchangeably herein.
- the term “and/or” in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist separately. B these three situations.
- the character "/" in this article generally indicates that the contextual object is an "or” relationship.
- the embodiment of the present application provides a link reconstruction method, as shown in FIG. 1 .
- the user equipment UE After the user equipment UE sends the measurement report to the radio network controller RNC, the first timer is started.
- the measurement 4 report includes: a measurement of the 1A, 1B, 1C or ID event 4 wireless signal measurement report of the measurement event or other measurement event.
- Other measurement events can be measurement report events of different frequency or different systems.
- the duration of the first timer that is, the timing value of the first timer may be the timing value of the first timer delivered by the network, or the timing value of the first timer pre-agreed by the UE and the network, or the UE.
- the timing value of the first timer calculated according to the activation event offset value carried in the measurement report and the current connection frame number (CFN) of the UE, or the weighting factor sum issued by the UE according to the network
- the timing value of the link failure timer T313 is calculated as the counted value of the first timer.
- the unsatisfied cell handover condition includes: not receiving the cell handover signaling when the first timer expires; or not receiving the cell handover signaling when the first timer expires, and the serving cell
- the signal-to-noise ratio or channel quality indicator CQI is less than a predetermined threshold; or, when the first timer expires, no cell handover signaling is received, and the signal-to-noise ratio or channel quality indicator CQI of the serving cell continues to be less than a period of time Schedule a threshold.
- the value of CQI is evaluated according to the P-CPICH (Primary-Common Pilot Channel) primary common pilot channel.
- the process of cell reselection mainly includes the UE measuring the signal quality of the neighboring cell, and then sorting the neighboring cells according to the reselection rule according to the signal quality of each neighboring cell, and the UE may select the neighboring cell that satisfies the reselection condition.
- Reselection rules can refer to signal quality Factors such as the quantity and the type of the cell; the condition of the reselection may be the condition that the signal quality is higher than that of the serving cell, or the signal quality is the highest in the neighboring cell, which is not limited in this embodiment. It should be noted that some of the specific content in this embodiment may refer to the corresponding content in the embodiment corresponding to FIG. 2 and FIG. 3, and details are not repeatedly described herein.
- the UE starts the first timer after sending the measurement report to the RNC, and performs cell reselection and initiates cell update when the first timer expires and the cell handover condition is not met.
- the UE needs to wait for the radio link failure condition to wait for the cell reselection, and does not wait for multiple out-of-synchronization indications and synchronization indications, but directly counts down, which can reduce the UE cell handover failure.
- the waiting time can start the process of reestablishing the wireless link more quickly, thereby reducing the service interruption delay caused by the cell handover failure and improving the quality of service.
- Another embodiment of the present application provides a link reconstruction method, as shown in FIG. 2.
- the radio network controller RN C sends the timing value of the first timer to the user equipment UE, where the first timer is used to perform the cell when the UE determines that the first timer expires and the cell handover condition is not met. Reselect and initiate the cell update process.
- the RNC may send the timer value of the first timer to the UE before the UE reports the measurement report, or may send the timing value of the first timer to the UE after the UE detects the UE.
- the first timer is started; if the UE meets the cell handover condition before the first timer expires, the normal cell handover procedure is performed, and the cell reselection and the cell update process are not initiated. Conversely, if the UE still fails to satisfy the cell handover condition when the first timer expires, the cell reselection is initiated and a cell update procedure is initiated to reestablish the radio link as soon as possible.
- the cause value carried in the cell update message sent by the UE may be an RLF or a Hand Over Failure (HOF).
- RLF Radio Link Control
- HAF Hand Over Failure
- other specific cause values may also be defined.
- the UE starts the first timer after sending the measurement report to the RNC, and performs cell reselection and initiates cell update when the first timer expires and the cell handover condition is not met.
- the UE needs to wait for the radio link failure condition to wait for the cell reselection, and does not wait for multiple out-of-synchronization indications and synchronization indications, but directly counts down, which can reduce the UE cell handover failure.
- the waiting time can start the process of reestablishing the wireless link more quickly, thereby reducing the service interruption delay caused by the cell handover failure and improving the quality of service.
- the embodiment of the present application provides a link reconstruction method, as shown in FIG. 3.
- the UE sends a measurement report to the RNC.
- the measurement report includes: 1A, 1B, 1C or a measurement report triggered by an ID event.
- the UE starts the first timer.
- the timing value of the first timer includes: a timing value of the first timer delivered by the network, or a timing value of the first timer preset by the UE and the network, or the UE according to the measurement report.
- the calculated activation event offset value and the timing value of the first timer calculated by the current connection frame number CFN, or the number calculated by the UE according to the weighting factor delivered by the network and the timing value of the link failure timer T313 The timing value of a timer.
- the network side may send the timing value of the first timer to the UE by using public signaling.
- the timing value of the first timer may be sent to the UE by using dedicated signaling for configuring the timing value of the first timer, which is not limited in this application.
- the UE and the network may pre-agreed the timing value of the first timer in the communication protocol.
- the UE when the UE sends a measurement report of the 1D event to the RNC in step 301, and the target cell is a pre-configured cell of the fast cell cell handover, the UE may perform an activation event offset value carried in the 1D event measurement report. And the timing value of the first timer calculated by the CFN.
- the measurement report sent by the UE carries an “activation event offset” value that is not 0 configured for the target cell.
- the timing value of the first timer is the current CFN plus the active event offset.
- the cell reselection is performed and the cell update is initiated, and the cause value carried in the cell update message is a cell handover failure and a radio link failure. Or other special values.
- the "activation event offset" value is not carried in the measurement report sent by the UE, or the value of 0 "activation event offset” is carried. After transmitting the measurement report, the UE starts the first timer, and continuously monitors the fast cell cell handover signaling sent by the pre-configured target cell.
- the cell reselection is performed, and the cell after the reselection initiates the cell update, and the cell is updated.
- the reason value carried in the message is a cell handover failure, a radio link failure, or other special value.
- the UE may also calculate the timing value of the first timer by using a weighting factor.
- a weighting factor For example, the UE and the network have agreed on a timing value of a link failure timer T313 through a communication protocol, and the network sends a weighting factor based on the moving speed timing value to the UE, for example, a weighting factor corresponding to the high speed state. After the UE sends a measurement report to the RNC, it can be based on The product of the previous weighting factor and the timing value of T313 is calculated to obtain the timing value of the first timer, thereby starting the first timer.
- the UE and the network may pre-define a plurality of weighting factors, or the network side may periodically configure an appropriate weighting factor for the UE according to the UE state, and select different weighting factors for different UE states.
- the timing value of the weighting factor may be different based on the weighting factors of the non-edge and the edge, and the weighting factors based on the high-speed mobile and the low-speed mobile UE are different, and the type of the target cell based on the UE and the type of the serving cell may be different when used in the same manner.
- Weighting factor The manner in which the UE is in the center and the edge may be in multiple manners.
- the RSCP value of the serving cell is If the uplink transmission power of the UE is higher than a certain threshold, it is judged as an edge. If the uplink threshold is lower than a certain threshold, it is judged as non-edge.
- the weighting factors for different scenarios may also be different. For example, the weighting factor of the cell handover scenario is smaller, and the weighting factor for the non-cell handover scenario in the connected state is relatively larger.
- the above is an example of calculating the timing value of the first timer by using the weighting factor. Other implementations that are described in detail herein are also within the scope of protection claimed herein.
- the UE reads system broadcast information of the neighboring cell, so as to obtain system broadcast information of the reselected cell before initiating the cell update process.
- the step 303 can start execution at a suitable timing after the UE starts the first timer.
- the system broadcast information of the neighboring area may be read immediately after the first timer is started, or the system broadcast information of the neighboring area may be read after the first timer is started, or may be read when the cell is reselected.
- the system broadcast information of the neighboring area may be performed after the cell is reselected. The embodiment of the present application does not limit this.
- step 304 Whether the cell handover condition is met before the first timer expires; if the cell handover condition is met before the first timer expires, step 305 is performed; if the first timer expires, the method is not met. For the cell handover condition, step 306 is performed.
- the unsatisfied cell handover condition includes: not receiving the cell handover signaling when the first timer expires; or not receiving the cell handover signaling when the first timer expires, and the serving cell
- the signal-to-noise ratio (Channel Quality Indication, CQI) 5 is less than a predetermined threshold; or, the cell handover signaling is not received when the first timer expires, and the signal-to-noise ratio or channel quality indicator of the serving cell
- the CQI continues to be less than a predetermined threshold for a period of time.
- the cell handover signaling may be an active set update (ASU), a radio bearer reconfiguration (RBR), a physical channel reconfiguration (PCR), or a transport channel re-establishment TCR (Transport Channel IO Reconfiguration)
- ASU active set update
- RBR radio bearer reconfiguration
- PCR physical channel reconfiguration
- TCR Transport Channel re-establishment
- the signal to noise ratio may be a signal to interference ratio (SIR), or a ratio of received energy per chip to a power density ratio of a broadband (referred to as Ec/No, or RSCP/RSSI, respectively).
- SIR signal to interference ratio
- Ec/No a ratio of received energy per chip to a power density ratio of a broadband
- RSCP/RSSI a ratio of received energy per chip to a power density ratio of a broadband
- the duration may be a value equal to the timing value of the first timer, or may be a period smaller than the timing value of the first timer, which may be sent to the UE by the network or may be agreed.
- the UE terminates the first timer, and performs a normal cell handover procedure.
- the UE 0 receives the cell handover signaling, and then switches to the target cell according to the cell handover signaling cell.
- the difference is that the start timing of the first timer is earlier than the start of T313, and the timing value of the first timer may be smaller than the timing value of T313.
- the UE performs cell reselection, and sends a cell to the RNC corresponding to the reselected cell. New news.
- the update reason carried in the cell update message is a radio link failure RLF, a cell handover failure HOF, or a specific value.
- the system broadcast information of the reselected cell may be used before the cell update message is initiated. If the system broadcast information of the reselected cell has been obtained in step 303, the acquired system broadcast information may be used here without repeated acquisition.
- the UE receives a cell update acknowledgement message sent by the RNC, so as to establish a radio link in the reselected cell.
- the content of the application may be applied to a communication system such as LTE or TD-SCDMA, which is not limited in this embodiment of the present application.
- the UE starts the first timer after sending the measurement report to the RNC, and performs cell reselection and initiates cell update when the first timer expires and the cell handover condition is not met.
- the UE needs to wait for the radio link failure condition to wait for the cell reselection, and does not wait for multiple out-of-synchronization indications and synchronization indications, but directly counts down, which can reduce the UE cell handover failure.
- the waiting time can start the process of reestablishing the wireless link more quickly, thereby reducing the service interruption delay caused by the cell handover failure and improving the quality of service. At the same time, it does not affect the detection mechanism of the traditional radio link failure.
- Another embodiment of the present application provides a link reconstruction method, as shown in FIG.
- the user equipment UE After receiving the N313 out-of-synchronization indications, the user equipment UE starts the second timer.
- the N313 is an integer greater than 0, and the timing value of the second timer is less than the timing value of the link failure timer T313.
- the UE is in the connected state, and does not send a measurement report to trigger the cell handover process. After the physical layer of the UE detects the out-of-synchronization, it reports to the UE upper layer.
- N313 is a big An integer of 0, that is, the UE determines that the link is out of synchronization after receiving multiple out-of-synchronization indications, and there is a possibility that the link fails. However, after the link is found to be out of synchronization, the link may also reach the synchronization state again. Therefore, the wireless link failure is not immediately determined, but the second timer is started to determine whether the link fails.
- the timing value of N313 can be 1, 2, 4, 10, 20, 50, 100 or 200, and the like.
- T313 is also a timer that can be set according to the actual situation of the system or the UE. It can be set to 0 to 15 seconds. For example, the timing value of T313 can be 5 seconds.
- N315 is an integer greater than 0.
- the physical layer of the UE may also determine the link synchronization, and then report it to the upper layer of the UE.
- the same N315 is an integer greater than or equal to 1.
- the UE After the link is out of synchronization, the UE starts a second timer of the network configuration, so as to determine whether to perform cell reselection, and the UE needs to wait for the radio link failure condition after waiting in the prior art.
- the timing value of the second timer may be obtained by the timing value or the weighting factor of the second timer configured by the network, and the timing value of the second timer may be flexibly configured according to the state of the UE.
- Another embodiment of the present invention provides a link reconstruction method, as shown in FIG. 5. 501.
- the radio network controller RNC sends a weighting factor for calculating a second timer to the user equipment UE, where the second timer is used by the UE to determine that the second timer has not received N315 times. Performing cell reselection and initiating a cell update procedure when the synchronization indication is performed, and the N315 is an integer greater than 0.
- the UE After the link is out of synchronization, the UE starts a second timer of the network configuration, so as to determine whether to perform cell reselection, and the UE needs to wait for the radio link failure condition after waiting in the prior art.
- the timing value of the second timer can be obtained by the weighting factor of the network configuration, and the timing value of the second timer can be flexibly configured according to the state of the UE, thereby not only reducing the UE cell handover failure.
- the waiting time in the case reduces the service interruption delay caused by the cell handover failure, and also ensures sufficient waiting time and improves the quality of service when the link is unstable and waits for recovery synchronization.
- Another embodiment of the present application provides a link reconstruction method, as shown in FIG. 6.
- the RNC sends a weighting factor for calculating the second timer to the UE.
- the manner in which the RNC sends the timing value of the second timer to the UE may be implemented in multiple manners.
- the manner in which the weighting factor is used by the 601 is one of the implementation manners.
- the RNC may also directly send the timing value of the second timer to the UE.
- the timing value of the second timer includes at least three configurations: The timing value of the second timer delivered by the network; the second is the timing value of the second timer pre-agreed by the UE and the network; and the third is the weighting factor and chain delivered by the UE according to the network.
- the timing value of the second failure timer calculated by the timing value of the road failure timer T313; wherein the weighting factor is a non-negative number less than one.
- one of the configurations may be selected according to the requirements of the system, which is not limited in this embodiment.
- the second timer is configured to perform cell reselection and initiate a cell update process when the UE determines that the second timer expires and fails to receive N315 synchronization indications, where the N315 is an integer greater than 0.
- the timing value of the second timer is less than the timing value of the link failure timer T313.
- the UE After receiving the N313 out-of-synchronization indications, the UE starts the second timer.
- the N313 is an integer greater than 0, that is, the UE receives multiple out-of-synchronization indications to indicate that the existing radio link transmission quality of the UE is poor, and cannot meet the communication quality requirement of the UE.
- the UE receives N315 synchronization indications before the second timer advances; if the N315 synchronization indications are received before the second timer expires, step 604 is performed; if the second timer is not received before the timer expires If there are N315 synchronization indications, step 605 is performed.
- the UE terminates the second timer and continues normal communication.
- the timing value of the second timer is calculated by using the weighting factor and the timing value of the link failure timer T313. Different weighting factors may be selected according to the state of the UE, thereby satisfying different scenarios. The demand for the timing value of the second timer below.
- the UE performs cell reselection, and sends a cell update message to the RNC corresponding to the reselected cell, where the update reason carried in the cell update message is a radio link failure RLF,
- the cell handover fails HOF or a specific value.
- the UE receives a cell update acknowledgement message sent by the RNC, so as to establish a radio link in the reselected cell.
- the UE After the link is out of synchronization, the UE starts a second timer of the network configuration, so as to determine whether to perform cell reselection, and the UE needs to wait for the radio link failure condition after waiting in the prior art.
- the timing value of the second timer can be obtained by the weighting factor of the network configuration, and the timing value of the second timer can be flexibly configured according to the state of the UE, thereby not only reducing the UE cell handover failure.
- the waiting time in the case reduces the service interruption delay caused by the cell handover failure, and also ensures sufficient waiting time and improves the quality of service when the link is unstable and waits for recovery synchronization.
- a UE as shown in FIG. 7, including: a transmitter 71 and a processor 72.
- a transmitter 71 configured to send a measurement report to the RNC
- a processor 72 configured to start a first timer after the transmitter 71 sends the measurement report, where the processor 72 is further configured to use the first timing
- cell reselection is performed and a cell update procedure is initiated to re-establish the radio link.
- processor 72 is further configured to: terminate the first timer when the cell handover condition is met before the first timer expires.
- the unsatisfied cell handover condition includes: when the first timer expires The cell handover signaling is not received; or, when the first timer expires, the cell handover signaling is not received, and the signal to noise ratio or channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, in the first The cell handover signaling is not received when the timer expires, and the signal to noise ratio or channel quality indication CQI of the serving cell continues to be less than a predetermined threshold for a period of time.
- the processor 72 is further configured to: after reselecting the cell, instruct the transmitter 71 to send a cell update message in the reselected cell; the transmitter 71 is further configured to be in the processor 72. Instructing to send a cell update message to the RNC corresponding to the cell after the reselection, where the update reason carried in the cell update message is a radio link failure RLF, a cell handover failure HOF, or a specific value; the UE further includes: receiving The unit 73 is configured to receive a cell update acknowledgement message sent by the RNC, so as to establish a radio link in the reselected cell.
- the measurement 4 report includes: 1A, 1B, 1C or measurement of an ID event.
- the UE further includes: a memory 74, configured to store a timing value of the first timer.
- the timing value of the first timer includes: a timing value of the first timer delivered by the network, or a timing value of the first timer that is pre-agreed by the UE and the network, or the UE according to the measurement
- the timing value of the first timer that is calculated by the activation event offset value carried in the report and the current connection frame number CFN of the UE, or the weighting factor delivered by the UE according to the network and the timing value of the link failure timer T313
- the calculated timing value of the first timer is calculated.
- the processor 72 is further configured to: after starting the first timer, trigger the receiver 73 to receive system broadcast information of a neighboring cell; the receiver 73 is further configured by the processor 72.
- the system broadcast of the receiving neighboring cell is triggered; the processor 72 is further configured to read the system broadcast information of the neighboring cell from the system broadcast received by the receiver 73, so as to obtain the reselected cell before initiating the cell update process.
- the transmitter 71 and the receiver 73 are used for the device and other devices or communication networks (such as, but not limited to, Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.) Communication between.
- RAN Radio Access Network
- WLAN Wireless Local Area Network
- the memory 74 may be a Read Only Memory (ROM), a static storage device, a dynamic storage device, or a Random Access Memory (RAM).
- the memory 74 can store operating systems and other applications.
- the program code for implementing the technical solution provided by the embodiment of the present invention is stored in the memory 74 and executed by the processor 72.
- the processor 72 can use a general-purpose central processing unit (CPU), a start processor, an application specific integrated circuit (ASIC), or one or more integrated circuits for executing related programs.
- CPU central processing unit
- ASIC application specific integrated circuit
- FIG. 7 only shows the transmitter 71, the receiver 73, the memory 74, and the processor 72, in a specific implementation process, those skilled in the art should understand that the terminal also includes a normal implementation. Other devices necessary for operation. At the same time, those skilled in the art will appreciate that hardware devices that implement other functions may also be included, depending on the particular needs.
- the UE provided by the embodiment of the present application starts the first timer after sending the measurement report to the RNC, and performs cell reselection and initiates the cell update process when the first timer expires and the cell handover condition is not met.
- the UE needs to wait for the radio link failure condition to be met.
- the device does not need to wait for multiple out-of-synchronization indications and synchronization indications, but directly counts down, can reduce the waiting time in the case of UE cell handover failure, and can start the process of reestablishing the wireless link more quickly. Reduce the service interruption delay caused by cell handover failure and improve service quality.
- Another embodiment of the present application provides a UE. As shown in FIG. 8, the UE includes: a receiver 81 and a processor 82.
- the receiver 81 is configured to receive an out-of-synchronization indication and a synchronization indication.
- the processor 82 is configured to: after the receiver 81 receives the N313 out-of-synchronization indications, start the second timer; where, N313 is an integer greater than 0.
- the timing value of the second timer is smaller than the timing value of the link failure timer T313; the processor 82 is further configured to: when the second timer expires, the receiver does not receive N315 synchronization indications Perform cell reselection and initiate a cell update procedure to re-establish a wireless link; where N315 is an integer greater than zero.
- the processor 82 is further configured to: terminate the first timer when the receiver receives N315 synchronization indications before the first timer expires.
- the UE further includes: a transmitter 83, wherein the processor 82 is further configured to: after reselecting the cell, instruct the transmitter 83 to send a cell update message after the reselected pilot; the transmitter 83, And sending, by the processor 82, a cell update message to the RNC corresponding to the reselected cell, where the update reason carried in the cell update message is a radio link failure RLF, a cell handover failure HOF, or a specific value.
- the receiver 81 is further configured to receive a cell update acknowledgement message sent by the RNC, so as to establish a radio link in the reselected cell.
- the UE further includes: a memory 84, configured to store a timing value of the second timer; a timing value of the second timer includes: a timing value of a second timer delivered by the network, a timing value of the second timer that is pre-agreed by the UE and the network, or a timing value of the second timer calculated by the UE according to a weighting factor sent by the network and a timing value of the link failure timer T313;
- the weighting factor is a non-negative number less than one.
- the receiver 81 is further configured to: before the processor 82 starts the second timer, receive one or more weighting factors that are sent by the RNC; and the processor 82 is further used. Determining a weighting factor according to a state in which the UE is located; calculating a timing value of the second timer according to the determined weighting factor and the timing value of T313.
- the transmitter 83 and the receiver 81 are used for the device and other devices or communication networks (such as, but not limited to, Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.) Communication between.
- devices or communication networks such as, but not limited to, Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.
- the memory 84 can be a Read Only Memory (ROM), a static storage device, a dynamic storage device, or a Random Access Memory (RAM).
- Memory 84 can store operating systems and other applications.
- the program code for implementing the technical solution provided by the embodiment of the present invention is stored in the memory 84 and executed by the processor 82.
- the processor 82 can use a general-purpose central processing unit (CPU), a start processor, an application specific integrated circuit (ASIC), or one or more integrated circuits for executing related programs.
- CPU central processing unit
- ASIC application specific integrated circuit
- FIG. 7 only shows the transmitter 83, the receiver 81, the memory 84, and the processor 82, in a specific implementation process, those skilled in the art should understand that the terminal also includes a normal implementation. Other devices necessary for operation. At the same time, those skilled in the art will appreciate that hardware devices that implement other functions may also be included, depending on the particular needs. It should be noted that the specific implementation process of each functional unit in the embodiment of the present application and the information interaction between the modules are based on the same inventive concept as the method embodiment of the present invention, and may be implemented according to FIG. 4, 5, and 6. The corresponding content in the example is not described herein again.
- the UE provided by the embodiment of the present application starts the second timer of the network configuration after the link is out of synchronization, so as to determine whether to perform cell reselection, and the cell is heavy after the UE needs to wait for the radio link failure condition to be satisfied in the prior art.
- the timing value of the second timer can be obtained by the timing value or weighting factor of the second timer configured by the network, and the timing value of the second timer can be flexibly configured according to the state of the UE, thereby not only reducing The waiting time in the case of UE cell handover failure is reduced, and the service interruption delay caused by the cell handover failure is reduced.
- the RNC includes: a transmitter 91 and a receiver 92.
- the transmitter 91 is configured to send a timing value of the first timer to the user equipment UE, where the first timer is used to perform cell reselection when the UE determines that the first timer expires and does not satisfy the cell handover condition. And the cell update process is initiated.
- the receiver 92 is configured to receive a cell update message sent by the UE, and send a cell update acknowledgement message to the UE, to re-establish the radio link of the UE.
- the unsatisfied cell handover condition includes: the UE does not receive the cell handover signaling when the first timer expires; or the UE does not receive the cell handover when the first timer expires Signaling, and the signal-to-noise ratio or channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, the UE does not receive the cell handover signaling when the first timer expires, and The signal to noise ratio or channel quality indication CQI of the serving cell continues to be less than a predetermined threshold for a period of time.
- the RNC provided by the embodiment of the present application allocates a timer timing value to the UE, so that the UE performs cell reselection and initiates a cell update process when the first timer expires and does not meet the cell handover condition, and the UE needs to wait for the satisfaction in the prior art.
- the cell does not need to wait for multiple out-of-synchronization indications and synchronization indications, but directly counts down, which can reduce the waiting time in the case of UE cell handover failure, and can start the re-establishment of the wireless network more quickly.
- the process of the link thereby reducing the service interruption delay caused by the cell handover failure and improving the quality of service.
- Another embodiment of the present application provides an RNC. As shown in FIG. 10, the RNC includes: a transmitter 1001, a receiver 1002, and a processor 1003.
- the transmitter 1001 is configured to send, to the user equipment UE, a weighting factor for calculating a second timer, where the second timer is used by the UE to determine that the second timer times out and does not receive N315 synchronizations. Instructing to perform cell reselection and initiating a cell update process, the N315 is an integer greater than 0; the receiver 1002 is configured to receive a cell update message sent by the UE, and the processor 1003 is configured to receive according to the receiver 1002. The cell update message is generated to generate a cell update acknowledgement message. The transmitter 1001 is further configured to send the cell update acknowledgement message generated by the processor 1003 to the UE to re-establish the radio link of the UE.
- the RNC provided by the embodiment of the present application sends a weighting factor for calculating a second timer to the UE, so that the UE starts a second timer of an appropriate duration after the link is out of synchronization, thereby determining whether to perform cell reselection, and
- the timing of the second timer may be obtained by the timing value or the weighting factor of the second timer configured by the network, and the timing of the second timer may be obtained by waiting for the UE to wait for the radio link failure condition to be met.
- the timing value can be flexibly configured according to the state of the UE, thereby not only reducing the waiting time in the case of UE cell handover failure, but also reducing the service interruption delay caused by the cell handover failure, and also waiting for the link to be unstable when the link is unstable. Ensure adequate waiting time and improve service quality.
- the UE may include: a timing unit 1101 and a reconstruction unit 1102.
- the timing unit 1101 is configured to start a first timer after sending a measurement report to the radio network controller RNC, and the reconstruction unit 1102 is configured to time out the first timer of the timing unit 1101 and fail to meet the cell handover condition. At the same time, cell reselection is performed and a cell update procedure is initiated to re-establish the radio link.
- the UE further includes: a terminating unit 1103, configured to terminate the first timer when the cell switching condition is met before the first timer of the timing unit 1101 expires.
- the unsatisfied cell handover condition includes: not receiving cell handover signaling when the first timer of the timing unit 1101 expires; or not receiving when the first timer of the timing unit 1101 times out Go to the cell handover signaling, and the signal-to-noise ratio or channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, when the first timer of the timing unit 1101 times out, the cell handover signaling is not received, and the service cell's letter is received.
- the noise ratio or channel quality indicates that the CQI continues to be less than a predetermined threshold for a period of time.
- the reconstruction unit 1102 includes: a reselection subunit 11021, a transmission subunit 11022, and a receiving subunit 11023.
- the reselection subunit 11021 is configured to perform cell reselection when the first timer of the timing unit 1101 times out and does not satisfy the cell handover condition, and the sending subunit 11022 is configured to reselect the reselection subunit 11021.
- the following cell sends a cell update message to the RNC, where the update reason carried in the cell update message is a radio link failure RLF, a cell handover failure HOF, or a specific value; and a receiving subunit 11023, configured to receive the RNC transmission.
- the cell update acknowledgement message is used to establish a radio link in the reselected cell.
- the measurement 4 report includes: 1A, 1B, 1C or measurement of an ID event.
- the timing value of the first timer of the timing unit 1101 includes: a timing value of the first timer delivered by the network, or a timing value of the first timer pre-agreed by the UE and the network, or The timing value of the first timer calculated by the UE according to the activation event offset value carried in the measurement report and the current connection frame number CFN of the UE, or the weighting factor and link sent by the UE according to the network
- the timing value of the failure timer T 313 is calculated as the timing value of the first timer.
- the UE further includes: a reading unit 1104, configured to: after the timing unit 1101 starts the first timer, read system broadcast information of the neighboring area, so as to obtain before the reestablishing unit 1102 initiates a cell update process. Reselect the system broadcast information of the cell.
- the UE provided by the embodiment of the present application starts the first timing after sending the measurement report to the RNC. And performing cell reselection and initiating a cell update process when the first timer expires and the cell handover condition is not met, and performing cell reselection only after the UE needs to wait for the radio link failure condition to be satisfied in the prior art. Instead of waiting for multiple out-of-synchronization indications and synchronization indications, but directly counting down, the waiting time in the case of UE cell handover failure can be reduced, and the process of reestablishing the wireless link can be started more quickly, thereby reducing the failure of the cell handover. The business is interrupted and the service quality is improved.
- Another embodiment of the present application provides a UE. As shown in FIG. 12, the UE further includes: a timing unit 1201 and a reconstruction unit 1202.
- the timing unit 1201 is configured to start a second timer after receiving the N313 out-of-synchronization indications, where N313 is an integer greater than 0, and the timing value of the second timer is less than a timing value of the link failure timer T313. .
- the reconstruction unit 1202 is configured to: when the second timer of the timing unit 1201 times out, does not receive N315 synchronization indications, perform cell reselection and initiate a cell update procedure, to re-establish a wireless link; where, N315 is greater than 0. The integer.
- the UE further includes: a terminating unit 1203, configured to terminate the second timer by receiving N315 synchronization indications before the second timer of the timing unit 1201 times out.
- the reconstruction unit 1202 includes: a reselection subunit 12021, a transmission subunit 12022, and a receiving subunit 12023.
- the reselection subunit 12021 is configured to perform cell reselection when the N315 synchronization indications are not received before the second timer of the timing unit 1201 times out; the sending subunit 12022 is configured to be in the reselection subunit 12021
- the reselected cell sends a cell update message to the RNC, where the update reason carried in the cell update message is a radio link failure RLF, a cell handover A failing HOF or a specific value; a receiving subunit 12023, configured to receive a cell update acknowledgement message sent by the RNC, to establish a radio link in the reselected cell.
- the timing value of the second timer of the timing unit 1201 includes: a timing value of a second timer that is sent by the network, a timing value of the second timer that is pre-agreed by the UE and the network, or the UE The timing value of the second timer calculated according to the weighting factor delivered by the network and the timing value of the link failure timer T313; wherein the weighting factor is a non-negative number less than 1.
- the UE may further include: a receiving unit 1204, a factor unit 1205, and a calculating unit 1206.
- the receiving unit 1204 is configured to receive one or more weighting factors that are sent by the RNC before the timing unit 1201 starts the second timer, and the factor unit 1205 is configured to be used according to the state of the UE. And a weighting factor determined by the receiving unit 1204 to determine a weighting factor; a calculating unit 1206, configured to calculate a timing of the second timer according to the weighting factor determined by the factor unit 1205 and the timing value of T313 value.
- the UE provided by the embodiment of the present application starts the second timer of the network configuration after the link is out of synchronization, so as to determine whether to perform cell reselection, and the cell is heavy after the UE needs to wait for the radio link failure condition to be satisfied in the prior art.
- the timing value of the second timer can be obtained by the timing value or weighting factor of the second timer configured by the network, and the timing value of the second timer can be flexibly configured according to the state of the UE, thereby not only reducing UE cell handover failure, etc. Waiting time, reducing the service interruption delay caused by the cell handover failure, and ensuring sufficient waiting time and improving the service quality when the link is unstable and waiting for recovery synchronization.
- Another embodiment of the present application provides a radio network controller RNC. As shown in FIG. 13, the RNC includes: a sending unit 1301 and a receiving unit 1302.
- the sending unit 1301 is configured to send a timing value of the first timer to the user equipment UE, where the first timer is used to perform cell reselection when the UE determines that the first timer expires and the cell handover condition is not met. And initiate a cell update process.
- the receiving unit 1302 is configured to: after the sending unit 1301 sends the timing value of the first timer to the UE, receive a cell update message sent by the UE, and send a cell update confirmation message to the UE, to re-establish the The wireless link of the UE.
- the unsatisfied cell handover condition includes: the UE does not receive the cell handover signaling when the first timer expires; or The UE does not receive the cell handover signaling when the first timer expires, and the signal to noise ratio or the channel quality indicator CQI of the serving cell is less than a predetermined threshold; or, when the first timer expires, The UE does not receive the cell handover signaling, and the signal-to-noise ratio or channel quality indication CQI of the serving cell continues to be less than a predetermined threshold for a period of time.
- the RNC provided by the embodiment of the present application allocates a timer timing value to the UE, so that the UE performs cell reselection and initiates a cell update process when the first timer expires and does not meet the cell handover condition, and the UE needs to wait for the satisfaction in the prior art.
- Cell reselection after radio link failure condition instead of waiting for multiple out-of-synchronization indications and synchronization indications, a direct countdown can reduce the waiting time in the case of UE cell handover failure, and the process of reestablishing the radio link can be started more quickly, thereby reducing the cell handover failure band.
- the business is interrupted and the service quality is improved.
- Another embodiment of the present application provides a radio network controller RNC. As shown in FIG. 14, the RNC includes: a sending unit 1401 and a receiving unit 1402.
- the sending unit 1401 is configured to send, to the user equipment UE, a weighting factor for calculating a second timer, where the second timer is used by the UE to determine that the second timer times out and does not receive N315 synchronizations. Performing cell reselection and initiating a cell update procedure when indicated, the N315 being an integer greater than zero.
- the receiving unit 1402 is configured to: after the sending unit 1401 sends the weighting factor to the UE, receive a cell update message sent by the UE, and send a cell update confirmation message to the UE, to re-establish the UE. Wireless link.
- the RNC provided by the embodiment of the present application sends a weighting factor for calculating a second timer to the UE, so that the UE starts a second timer of an appropriate duration after the link is out of synchronization, thereby determining whether to perform cell reselection, and
- the timing of the second timer may be obtained by the timing value or the weighting factor of the second timer configured by the network, and the timing of the second timer may be obtained by waiting for the UE to wait for the radio link failure condition to be met.
- the timing value can be flexibly configured according to the state of the UE, thereby not only reducing the waiting time in the case of UE cell handover failure, but also reducing the service interruption delay caused by the cell handover failure, and also waiting for the link to be unstable when the link is unstable. Guarantee Adequate waiting time to improve service quality.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the modules or units is only a logical function division.
- there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
- the units described as separate components may or may not be physically separated, and the components displayed as the units may or may not be physical units, that is, may be located at one place, or may be distributed to a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit is implemented as a software functional unit and as a standalone product When sold or used, it can be stored on a computer readable storage medium.
- the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .
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Abstract
本申请公开了一种链路重建方法、UE及RNC,涉及无线通信领域,可以快速启动恢复链路的过程,降低业务中断的时长,提高服务质量。本申请的内容主要包括:在UE向RNC发送测量报告后,启动第一计时器;若所述第一计时器超时且未满足切换条件,则进行小区重选并发起小区更新过程,以重新建立无线链路。本申请的实施例主要用于恢复或重建无线链路的过程中。
Description
一种链路重建方法、 用户设备及无线网络控制器 技术领域
本申请涉及无线通信领域, 尤其涉及一种链路重建方法、 用户设备
( User's Equipment, UE ) 及无线网络控制器。 背景技术
在异构网络 ( Heterogeneous Network, Hetnet ) 中, 宏小区和啟小区 之间通常会存在相互干扰, 尤其对于边缘用户干扰情况更为严重。 当 UE 从宏小区向微小区切换, 或从微小区向宏小区切换时, 服务小区下发小区 切换信令存在 UE接收不到或接收失败的情况。 当 UE向无线网络控制器 ( Radio Network Controller, RNC ) 发送测量报告后, 却没有收到小区切 换信令时, 无线链路信号正在逐渐衰减, 导致 UE可能将无法接收到网络 发送的小区切换信令。 这样, 会在 UE的链路失败时, 依然不能完成小区 切换而导致业务中断。
为了在小区切换失败时可以及时恢复链路,现有技术的链路重建流程 如下: UE的高层收到 N313 个物理层上报的失步指示后, 启动链路失败 计时器 (T313 ), 其中 N313为大于 0的整数, T313的计时值一般为 0至 15秒。 若 UE在 T313超时前未收到物理层上 ·艮的 N315个同步指示, 则 判定为无线链路失败( radio link failure , RLF )。 UE发起小区重选, 在重 选后的小区以 RLF原因发起小区更新 (cell update , CU ) 过程, 接收小 区更新确认消息, 在重选的小区重新建立无线链路, 在建立链路后向网络 侧发送链路建立响应消息。
在实现上述链路重建的过程中,申请人发现现有技术中至少存在如下 问题: 由于当 UE发送测量报告后, 没有收到小区切换信令, 需要等待足 够的失步指示并且一段时间内未能同步的条件满足后,才可触发链路重建 过程, 因此在小区切换失败后业务中断的时间较长。 发明内容
本申请的实施例提供一种链路重建方法、 UE及 RNC , 可以快速启动 恢复链路的过程, 降低业务中断的时长, 提高服务质量。
本申请的第一方面, 提供一种链路重建方法, 包括: 在用户设备 UE 向无线网络控制器 RNC发送测量报告后, 启动第一计时器; 若所述第一 计时器超时且未满足小区切换条件, 则进行小区重选并发起小区更新过 程, 以重新建立无线链路。
结合本申请的第一方面,在第一种可能的实现方式中,该方法还包括: 若在所述第一计时器超时之前满足小区切换条件, 则终止所述第一计时 器。
结合本申请的第一方面或第一方面的上述可能的实现方式,在第二种 可能的实现方式中, 所述未满足小区切换条件包括: 在所述第一计时器超 时时未接收到小区切换信令; 或, 在所述第一计时器超时时未接收到小区 切换信令, 且服务小区的信噪比或信道质量指示 CQI小于预定门限; 或, 在所述第一计时器超时时未接收到小区切换信令,且服务小区的信噪比或 信道质量指示 CQI在一段时间内持续小于预定门限。
结合本申请的第一方面或第一方面的上述可能的实现方式,在第三种 可能的实现方式中, 所述发起小区更新过程包括: 向重选后的小区所对应 的 RNC发送小区更新消息, 其中所述小区更新消息中携带的更新原因为
无线链路失败 RLF、 小区切换失败 HOF或特定值; 其中, 重选后的小区 所在的 RNC可以是不同于 UE发送测量报告时的服务 UE的小区所在的 RNC。
接收所述 RNC发送的小区更新确认消息, 以便在重选后的小区建立 无线链路。
结合本申请的第一方面或第一方面的上述可能的实现方式,在第四种 可能的实现方式中, 所述测量报告包括: 1A、 1B、 1C或 ID事件的测量 报告。
结合本申请的第一方面或第一方面的上述可能的实现方式,在第五种 可能的实现方式中, 所述第一计时器的计时值包括: 网络下发的第一计时 器的计时值, 或所述 UE与网络预先约定的第一计时器的计时值, 或所述 UE 根据所述测量报告中携带的激活事件偏移值和 UE 的当前连接帧号 C F N计算得到的第一计时器的计时值,或所述 U E根据网络下发的加权因 子和链路失败计时器 T313的计时值计算得到的第一计时器的计时值。
结合本申请的第一方面或第一方面的上述可能的实现方式,在第六种 可能的实现方式中, 在启动第一计时器之后, 还包括: 读取邻区的系统广 播信息, 以便在发起小区更新过程前获得重选小区的系统广播信息。
本申请的第二方面, 提供一种链路重建方法, 包括: 在用户设备 UE 接收到 N313个失步指示后, 启动第二计时器; 其中, N313为大于 0的 整数, 所述第二计时器的计时值小于链路失败计时器 T313的计时值; 若 在所述第二计时器超时时未接收到 N315个同步指示, 则进行小区重选并 发起小区更新过程, 以重新建立无线链路; 其中, N315为大于 0的整数。
结合本申请的第二方面,在第一种可能的实现方式中,该方法还包括:
若在所述第二计时器超时之前接收到 N315个同步指示, 则终止所述第二 计时器。
结合本申请的第二方面或第二方面的上述可能的实现方式,在第二种 可能的实现方式中, 所述发起小区更新过程包括: 向重选后的小区所对应 的 RNC发送小区更新消息, 其中所述小区更新消息中携带的更新原因为 无线链路失败 RLF、 小区切换失败 HOF或特定值; 接收所述 RNC发送的 小区更新确认消息, 以便在重选后的小区建立无线链路。
结合本申请的第二方面或第二方面的上述可能的实现方式,在第三种 可能的实现方式中, 所述第二计时器的计时值包括: 网络下发的第二计时 器的计时值, 所述 UE 与网络预先约定的第二计时器的计时值, 或所述 UE根据网络下发的加权因子和链路失败计时器 T313 的计时值计算得到 的第二计时器的计时值; 其中所述加权因子为小于 1的非负数。
结合本申请的第二方面或第二方面的第三种可能的实现方式,在第四 种可能的实现方式中, 在启动第二计时器之前, 该方法还包括: 接收到所 述 RNC下发的一个或多个所述加权因子; 根据所述 UE所处的状态和所 述一个或多个所述加权因子确定加权因子; 根据确定的加权因子和 T313 的计时值计算得到第二计时器的计时值。
本申请的第三方面, 提供一种链路重建方法, 包括: 无线网络控制器 RNC向用户设备 UE下发第一计时器的计时值; 其中, 第一计时器用于供 所述 UE确定所述第一计时器超时且未满足小区切换条件时进行小区重选 并发起小区更新过程; 接收所述 UE发送的小区更新消息, 向 UE发送小 区更新确认消息, 以重新建立所述 UE的无线链路。
结合本申请的第三方面, 在第一种可能的实现方式中, 所述未满足小
区切换条件包括: 在所述第一计时器超时时所述 U E未接收到小区切换信 令; 或, 在所述第一计时器超时时所述 UE未接收到小区切换信令, 且服 务小区的信噪比或信道质量指示 CQI 小于预定门限; 或, 在所述第一计 时器超时时所述 UE未接收到小区切换信令, 且服务小区的信噪比或信道 质量指示 CQI在一段时间内持续小于预定门限。
本申请的第四方面, 提供一种链路重建方法, 包括: 无线网络控制器 RNC向用户设备 UE下发用于计算第二计时器的加权因子; 其中, 所述第 二计时器用于供所述 UE确定所述第二计时器超时未接收到 N315个同步 指示时进行小区重选并发起小区更新过程, 所述 N315为大于 0的整数; 接收所述 UE发送的小区更新消息, 向所述 UE发送小区更新确认消息, 以重新建立所述 UE的无线链路。
本申请的第五方面, 提供一种用户设备 UE, 包括: 发射器, 用于向 无线网络控制器 RNC发送测量报告; 处理器, 用于在所述发射器发送测 量报告后, 启动第一计时器; 所述处理器, 还用于当所述第一计时器超时 且未满足小区切换条件时, 进行小区重选并发起小区更新过程, 以重新建 立无线链路。
结合本申请的第五方面, 在第一种可能的实现方式中, 所述处理器还 用于: 当在所述第一计时器超时之前满足小区切换条件时, 终止所述第一 计时器。
结合本申请的第五方面或第五方面的上述可能的实现方式,在第二种 可能的实现方式中, 所述未满足小区切换条件包括: 在所述第一计时器超 时时未接收到小区切换信令; 或, 在所述第一计时器超时时未接收到小区 切换信令, 且服务小区的信噪比或信道质量指示 CQI小于预定门限; 或,
在所述第一计时器超时时未接收到小区切换信令,且服务小区的信噪比或 信道质量指示 CQI在一段时间内持续小于预定门限。
结合本申请的第五方面或第五方面的上述可能的实现方式,在第三种 可能的实现方式中, 所述处理器, 还用于在重选小区后指示所述发射器在 重选后的小区发送小区更新消息; 所述发射器, 还用于在所述处理器的指 示下向重选后的小区所对应的 RNC发送小区更新消息, 其中所述小区更 新消息中携带的更新原因为无线链路失败 RLF、 小区切换失败 HOF或特 定值; 所述 UE还包括: 接收器, 用于接收所述 RNC发送的小区更新确 认消息, 以便在重选后的小区建立无线链路。
结合本申请的第五方面或第五方面的上述可能的实现方式,在第四种 可能的实现方式中, 所述测量报告包括: 1A、 1B、 1C或 ID事件的测量 报告。
结合本申请的第五方面或第五方面的上述可能的实现方式,在第五种 可能的实现方式中, 所述 UE还包括: 存储器, 用于存储所述第一计时器 的计时值。
所述第一计时器的计时值包括:网络下发的第一计时器的计时值,或, 所述 UE与网络预先约定的第一计时器的计时值, 或, 所述 UE根据所述 测量报告中携带的激活事件偏移值和 UE的当前连接帧号 CFN计算得到 的第一计时器的计时值, 或, 所述 UE根据网络下发的加权因子和链路失 败计时器 T313的计时值计算得到的第一计时器的计时值。
结合本申请的第五方面或第五方面的上述可能的实现方式,在第六种 可能的实现方式中, 所述处理器, 还用于在启动第一计时器之后, 触发所 述接收器接收邻区的系统广播信息; 所述接收器, 还用于在所述处理器的
触发下接收邻区的系统广播; 所述处理器, 还用于从所述接收器接收的系 统广播中读取邻区的系统广播信息,以便在发起小区更新过程前获得重选 小区的系统广播信息。
本申请的第六方面, 提供一种用户设备 UE, 包括: 接收器, 用于接 收失步指示和同步指示; 处理器, 用于在所述接收器接收到 N313个失步 指示后, 启动第二计时器; 其中, N313为大于 0的整数, 所述第二计时 器的计时值小于链路失败计时器 T313的计时值; 所述处理器, 还用于当 在所述第二计时器超时所述接收器未接收到 N315个同步指示时, 进行小 区重选并发起小区更新过程, 以重新建立无线链路; 其中, N315 为大于 0的整数。
结合本申请的第六方面或第六方面的上述可能的实现方式,在第一种 可能的实现方式中, 所述处理器还用于: 当在所述第一计时器超时之前所 述接收器接收到 N315个同步指示时, 终止所述第一计时器。
结合本申请的第六方面或第六方面的上述可能的实现方式,在第二种 可能的实现方式中, 该 UE还包括: 发射器; 所述处理器, 还用于在重选 小区后指示所述发射器在重选后的先驱发送小区更新消息; 所述发射器, 用于在所述处理器的指示下向重选后的小区所对应的 RNC发送小区更新 消息, 其中所述小区更新消息中携带的更新原因为无线链路失败 RLF、 小 区切换失败 HOF或特定值; 所述接收器, 还用于接收所述 RNC发送的小 区更新确认消息, 以便在重选后的小区建立无线链路。
结合本申请的第六方面或第六方面的上述可能的实现方式,在第三种 可能的实现方式中, 该 UE还包括: 存储器, 用于存储所述第二计时器的 计时值;所述第二计时器的计时值包括:网络下发的第二计时器的计时值,
所述 UE与网络预先约定的第二计时器的计时值, 或所述 UE根据网络下 发的加权因子和链路失败计时器 T313的计时值计算得到的第二计时器的 计时值; 其中所述加权因子为小于 1的非负数。
结合本申请的第六方面或第六方面的第三种可能的实现方式,在第四 种可能的实现方式中, 所述接收器, 还用于在所述处理器启动第二计时器 之前, 接收到所述 RNC下发的一个或多个所述加权因子; 所述处理器, 还用于根据所述 UE 所处的状态确定加权因子; 根据确定的加权因子和 T313的计时值计算得到第二计时器的计时值。
本申请的第七方面, 提供一种无线网络控制器 RNC , 包括: 发射器, 用于向用户设备 UE下发第一计时器的计时值; 其中, 第一计时器用于供 所述 UE确定所述第一计时器超时且未满足小区切换条件时进行小区重选 并发起小区更新过程; 接收器, 用于接收所述 UE发送的小区更新消息, 向 UE发送小区更新确认消息, 以重新建立所述 UE的无线链路。
结合本申请的第七方面, 在第一种可能的实现方式中, 所述未满足小 区切换条件包括: 在所述第一计时器超时时所述 U E未接收到小区切换信 令; 或, 在所述第一计时器超时时所述 UE未接收到小区切换信令, 且服 务小区的信噪比或信道质量指示 CQI 小于预定门限; 或, 在所述第一计 时器超时时所述 UE未接收到小区切换信令, 且服务小区的信噪比或信道 质量指示 CQI在一段时间内持续小于预定门限。
本申请的第八方面, 提供一种无线网络控制器 RNC , 包括: 发射器, 用于向用户设备 UE下发用于计算第二计时器的加权因子; 其中, 所述第 二计时器用于供所述 UE确定所述第二计时器超时未接收到 N315个同步 指示时进行小区重选并发起小区更新过程, 所述 N315为大于 0的整数;
接收器, 用于接收所述 UE发送的小区更新消息; 处理器, 用于根据所述 接收器接收到的小区更新消息生成小区更新确认消息; 所述发射器, 还用 于向所述 UE发送所述处理器生成的所述小区更新确认消息, 以重新建立 所述 UE的无线链路。
本申请的第九方面, 提供一种用户设备 UE, 包括: 计时单元, 用于 在向无线网络控制器 RNC发送测量报告后, 启动第一计时器; 重建单元, 用于在所述计时单元的第一计时器超时且未满足小区切换条件时,进行小 区重选并发起小区更新过程, 以重新建立无线链路。
结合本申请的第九方面,在第一种可能的实现方式中,该 UE还包括: 终止单元,用于在所述计时单元的第一计时器超时之前满足小区切换条件 时, 终止所述第一计时器。
结合本申请的第九方面或第九方面的上述可能的实现方式,在第二种 可能的实现方式中, 所述未满足小区切换条件包括: 在所述计时单元的第 一计时器超时时未接收到小区切换信令; 或, 在所述计时单元的第一计时 器超时时未接收到小区切换信令, 且服务小区的信噪比或信道质量指示 CQI小于预定门限; 或, 在所述计时单元的第一计时器超时时未接收到小 区切换信令, 且服务小区的信噪比或信道质量指示 CQI 在一段时间内持 续小于预定门限。
结合本申请的第九方面或第九方面的上述可能的实现方式,在第三种 可能的实现方式中, 所述重建单元包括: 重选子单元, 用于在所述计时单 元的第一计时器超时且未满足小区切换条件时, 进行小区重选; 发送子单 元,用于在所述重选子单元重选后的小区向所述 RNC发送小区更新消息, 其中所述小区更新消息中携带的更新原因为无线链路失败 RLF、小区切换
失败 HOF或特定值; 接收子单元, 用于接收所述 RNC发送的小区更新确 认消息, 以便在重选后的小区建立无线链路。
结合本申请的第九方面或第九方面的上述可能的实现方式,在第四种 可能的实现方式中, 所述测量报告包括: 1A、 1B、 1C或 ID事件的测量 报告。
结合本申请的第九方面或第九方面的上述可能的实现方式,在第五种 可能的实现方式中, 所述计时单元的第一计时器的计时值包括: 网络下发 的第一计时器的计时值, 或, 所述 UE与网络预先约定的第一计时器的计 时值, 或, 所述 UE根据所述测量报告中携带的激活事件偏移值和 UE的 当前连接帧号 CFN计算得到的第一计时器的计时值, 或, 所述 UE根据 网络下发的加权因子和链路失败计时器 T313的计时值计算得到的第一计 时器的计时值。
结合本申请的第九方面或第九方面的上述可能的实现方式,在第六种 可能的实现方式中, 该 UE还包括: 读取单元, 用于在所述计时单元启动 第一计时器之后, 读取邻区的系统广播信息, 以便在所述重建单元发起小 区更新过程前获得重选小区的系统广播信息。
本申请的第十方面, 提供一种用户设备 UE, 包括: 计时单元, 用于 在接收到 N313 个失步指示后, 启动第二计时器; 其中, N313 为大于 0 的整数, 所述第二计时器的计时值小于链路失败计时器 T313的计时值; 重建单元, 用于在所述计时单元的第二计时器超时未接收到 N315个同步 指示,则进行小区重选并发起小区更新过程, 以重新建立无线链路;其中, N315为大于 0的整数。
结合本申请的第十方面,在第一种可能的实现方式中,该 UE还包括:
终止单元, 用于在所述计时单元的第二计时器超时之前接收到 N315个同 步指示, 则终止所述第二计时器。
结合本申请的第十方面或第十方面的上述可能的实现方式,在第二种 可能的实现方式中, 所述重建单元包括: 重选子单元, 用于在所述计时单 元的第二计时器超时之前未接收到 N315个同步指示时, 进行小区重选; 发送子单元, 用于在所述重选子单元重选后的小区向所述 RNC发送小区 更新消息, 其中所述小区更新消息中携带的更新原因为无线链路失败 RLF、 小区切换失败 HOF或特定值; 接收子单元, 用于接收所述 RNC发 送的小区更新确认消息, 以便在重选后的小区建立无线链路。
结合本申请的第十方面或第十方面的上述可能的实现方式,在第三种 可能的实现方式中, 所述计时单元的第二计时器的计时值包括: 网络下发 的第二计时器的计时值,所述 UE与网络预先约定的第二计时器的计时值, 或所述 UE根据网络下发的加权因子和链路失败计时器 T313的计时值计 算得到的第二计时器的计时值; 其中所述加权因子为小于 1的非负数。
结合本申请的第十方面或第十方面的上述可能的实现方式,在第四种 可能的实现方式中, 在该方法还包括: 接收单元, 用于在所述计时单元启 动第二计时器之前, 接收到所述 RNC下发的一个或多个所述加权因子; 因子单元, 用于根据所述 UE所处的状态和所述接收单元接收到的一个或 多个所述加权因子确定加权因子; 计算单元, 用于根据所述因子单元确定 的加权因子和 T313的计时值计算得到第二计时器的计时值。
本申请的第十一方面, 提供一种 RNC , 包括: 发送单元, 用于向用 户设备 UE下发第一计时器的计时值; 其中, 第一计时器用于供所述 UE 确定所述第一计时器超时且未满足小区切换条件时进行小区重选并发起
小区更新过程; 接收单元, 用于在所述发送单元向所述 UE下发第一计时 器的计时值之后, 接收所述 UE发送的小区更新消息, 向 UE发送小区更 新确认消息, 以重新建立所述 UE的无线链路。
结合本申请的第十一方面, 在第一种可能的实现方式中, 所述未满足 小区切换条件包括: 在所述第一计时器超时时所述 UE未接收到小区切换 信令; 或, 在所述第一计时器超时时所述 UE未接收到小区切换信令, 且 服务小区的信噪比或信道质量指示 CQI 小于预定门限; 或, 在所述第一 计时器超时时所述 UE未接收到小区切换信令, 且服务小区的信噪比或信 道质量指示 CQI在一段时间内持续小于预定门限。
本申请的第十二方面, 提供一种无线网络控制器 RNC , 包括: 发送 单元, 用于向用户设备 UE下发用于计算第二计时器的加权因子; 其中, 所述第二计时器用于供所述 UE确定所述第二计时器超时未接收到 N315 个同步指示时进行小区重选并发起小区更新过程, 所述 N315为大于 0的 整数;接收单元,用于在所述发送单元向所述 UE下发所述加权因子之后, 接收所述 UE发送的小区更新消息, 向所述 UE发送小区更新确认消息, 以重新建立所述 UE的无线链路。
本申请实施例提供的链路重建方法、 UE 及 RNC , 通过在用户设备 UE向无线网络控制器 RNC发送测量报告后, 启动第一计时器, 并在所述 第一计时器超时且未满足小区切换条件时,进行小区重选并发起小区更新 过程, 与现有技术中 UE需要等待满足无线链路失败条件后才进行小区重 选相比, 不用等待失步指示和同步指示, 可以减少 UE小区切换失败情况 下的链路中断时间, 可以更快地启动重建无线链路的过程, 从而降低小区 切换失败带来的业务中断时延, 提高服务质量。
附图说明
为了更清楚地说明本申请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简单地介绍, 显而易见地, 下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员 来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附 图。
图 1为本申请一实施例中的一种链路重建方法流程图;
图 2为本申请另- -实施例中的- -种链路重建方法流程图;
图 3为本申请另- -实施例中的- -种链路重建方法流程图;
图 4为本申请另- -实施例中的- -种链路重建方法流程图;
图 5为本申请另- -实施例中的- -种链路重建方法流程图;
图 6为本申请另- -实施例中的- -种链路重建方法流程图;
图 7为本申请另- -实施例中的- -种 UE组成示意图;
图 8为本申请另- -实施例中的- -种 UE组成示意图;
图 9为本申请另- -实施例中的- -种 RNC组成示意图;
图 10为本申请另一实施例中的一种 RNC组成示意图;
图 11为本申请另一实施例中的一种 UE组成示意图;
图 12本申请另一实施例中的一种 UE组成示意图;
图 13本申请另一实施例中的一种 RNC组成示意图;
图 14为本申请另一实施例中的一种 RNC组成示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进
行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例, 而不是全部的实施例。基于本申请中的实施例, 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的 范围。
本文中描述的技术可用于各种通信系统, 例如当前 2G, 3G通信系统 和下一代通信系统, 例如全球移动通信系统 ( GSM , Global System for Mobile communications ) , 码分多址 ( CDMA , Code Division Multiple Access ) 系统, 时分多址 ( TDMA , Time Division Multiple Access ) 系统 , 宽带码分多址 ( WCDMA , Wideband Code Division Multiple Access Wireless ), 频分多址 ( FDMA, Frequency Division Multiple Addressing ) 系统, 正交频分多址 ( OFDMA, Orthogonal Frequency-Division Multiple Access )系统,单载波 FDMA( SC-FDMA )系统,通用分组无线业务( GPRS , General Packet Radio Service )系统,长期演进( LTE , Long Term Evolution ) 系统, 以及其他此类通信系统。
本文中结合用户设备和 /或基站和 /或基站控制器来描述各种方面。 用户设备, 可以是无线终端也可以是有线终端, 无线终端可以是指向 用户提供语音和 /或数据连通性的设备, 具有无线连接功能的手持式设备、 或连接到无线调制解调器的其他处理设备。 无线终端可以经无线接入网
(例如, RAN, Radio Access Network ) 与一个或多个核心网进行通信, 无线终端可以是移动终端, 如移动电话(或称为"蜂窝"电话)和具有移动 终端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或 者车载的移动装置, 它们与无线接入网交换语言和 /或数据。 例如, 个人 通信业务 ( PCS , Personal Communication Service ) 电话、 无绳电话、 会
话发起协议( SIP )话机、 无线本地环路 ( WLL , Wireless Local Loop )站、 个人数字助理 (PDA, Personal Digital Assistant ) 等设备。 无线终端也可 以称为系统、 订户单元 ( Subscriber Unit )、 订户站 ( Subscriber Station ), 移动站 ( Mobile Station )、 移动台 ( Mobile )、 远程站 ( Remote Station )、 接入点 ( Access Point )、 远程终端 ( Remote Terminal )、 接入终端 ( Access Terminal ), 用户终端 ( User Terminal )、 用户代理 (User Agent )、 用户设 备 ( User Device )、 或用户装备 ( User Equipment )。
基站(例如, 接入点) 可以是指接入网中在空中接口上通过一个或多 个扇区与无线终端通信的设备。 基站可用于将收到的空中帧与 IP分组进 行相互转换, 作为无线终端与接入网的其余部分之间的路由器, 其中接入 网的其余部分可包括网际协议(IP ) 网络。 基站还可协调对空中接口的属 性管理。例如,基站可以是 GSM或 CDMA中的基站( BTS , Base Transceiver Station ), 也可以是 WCDMA 中的基站 ( NodeB ), 还可以是 LTE 中的演 进型基站 ( NodeB或 eNB或 e-NodeB , evolutional Node B ), 本申请并不 限定。
基站控制器, 可以是 GSM 或 CDMA 中的基站控制器 (BSC , base station controller ), 也可以是 WCDMA中的无线网络控制器( RNC , Radio Network Controller ), 本申请并不限定。
另外, 本文中术语"系统"和"网络"在本文中常被可互换使用。 本文中 术语"和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种 关系 , 例如, A和 /或 B , 可以表示: 单独存在 A, 同时存在 A和 B , 单 独存在 B这三种情况。 另外, 本文中字符 "/" , 一般表示前后关联对象是 一种 "或" 的关系。
本申请实施例提供一种链路重建方法, 如图 1所示。
101、 在用户设备 UE向无线网络控制器 RNC发送测量 4艮告后, 启动 第一计时器。
其中, 所述测量 4艮告包括: 判决 1A、 1B、 1C或 ID事件的测量 4艮告 或其他测量事件的无线信号测量报告。其他测量事件可以是异频或异系统 的测量报告事件。 第一计时器的时长, 即第一计时器的计时值可以为网络 下发的第一计时器的计时值, 或所述 UE与网络预先约定的第一计时器的 计时值, 或所述 UE根据所述测量报告中携带的激活事件偏移值和 UE的 当前连接帧号( Connection Frame Number, CFN )计算得到的第一计时器 的计时值, 或所述 UE根据网络下发的加权因子和链路失败计时器 T313 的计时值计算得到的第一计时器的计时值。
102、 若所述第一计时器超时且未满足小区切换条件, 则进行小区重 选并发起小区更新过程, 以重新建立无线链路。
其中, 所述未满足小区切换条件包括: 在所述第一计时器超时时未接 收到小区切换信令;或,在所述第一计时器超时时未接收到小区切换信令, 且服务小区的信噪比或信道质量指示 CQI 小于预定门限; 或, 在所述第 一计时器超时时未接收到小区切换信令,且服务小区的信噪比或信道质量 指示 CQI在一段时间内持续小于预定门限。其中 CQI的值是根据 P-CPICH ( Primary- Common Pilot Channel ) 主公共导频信道来评估的。
其中, 小区重选的过程主要包括 UE测量相邻小区的信号质量, 然后 依据各相邻小区的信号质量按照重选规则对相邻小区进行排序, UE便可 以选择满足重选条件的相邻小区作为目标小区。重选规则可以参考信号质
量和小区类型等因素; 满足重选条件可以是指信号质量高于服务小区, 或 在相邻小区中信号质量最高等条件, 本实施例对此不做限定。 需要说明的 是,本实施例中部分具体内容可以参考图 2和 3对应的实施例中的相应内 容, 本实施例这里不再重复赘述。
本申请实施例提供的链路重建方法,UE在向 RNC发送测量报告后启 动第一计时器, 并在所述第一计时器超时且未满足小区切换条件时, 进行 小区重选并发起小区更新过程, 与现有技术中 UE需要等待满足无线链路 失败条件后才进行小区重选相比, 不用等待多个失步指示和同步指示, 而 是直接进行倒计时, 可以减少 UE小区切换失败情况下的等待时间, 可以 更快地启动重建无线链路的过程,从而降低小区切换失败带来的业务中断 时延, 提高服务质量。 本申请另一实施例提供一种链路重建方法, 如图 2所示。
201、无线网络控制器 RN C向用户设备 U E下发第一计时器的计时值; 其中, 第一计时器用于供所述 UE确定所述第一计时器超时且未满足小区 切换条件时进行小区重选并发起小区更新过程。
其中, RNC可以在 UE上报测量报告之前向 UE下发第一计时器的计 时值, 也可以在 UE上>¾测量 告后向 UE下发第一计时器的计时值。 所 述 UE在向 RNC发送测量^艮告后, 启动第一计时器; 若 UE在第一计时 器超时前满足小区切换条件, 则执行常规小区切换流程, 而不启动小区重 选和小区更新过程; 相反若 UE在第一计时器超时时仍未满足小区切换条 件, 则启动小区重选并发起小区更新过程, 以尽快重新建立无线链路。
202、 接收所述 UE发送的小区更新消息, 向 UE发送小区更新确认
消息, 以重新建立所述 UE的无线链路。
其中, UE发送的小区更新消息中携带的原因值通常可以为 RLF或小 区切换失败( Hand Over Failure, HOF ), 当然也可以定义其他特定原因值。 本实施例中部分具体内容可以参考图 1和 3对应的实施例中的相应内容, 本实施例这里不再重复赘述。
本申请实施例提供的链路重建方法,UE在向 RNC发送测量报告后启 动第一计时器, 并在所述第一计时器超时且未满足小区切换条件时, 进行 小区重选并发起小区更新过程, 与现有技术中 UE需要等待满足无线链路 失败条件后才进行小区重选相比, 不用等待多个失步指示和同步指示, 而 是直接进行倒计时, 可以减少 UE小区切换失败情况下的等待时间, 可以 更快地启动重建无线链路的过程,从而降低小区切换失败带来的业务中断 时延, 提高服务质量。 本申请实施例提供一种链路重建方法, 如图 3所示。
301、 UE向 RNC发送测量报告。
其中, 所述测量报告包括: 1A、 1B、 1C或 ID事件触发的测量报告。
302、 UE启动第一计时器。
其中, 第一计时器的计时值包括: 网络下发的第一计时器的计时值, 或所述 UE与网络预先约定的第一计时器的计时值, 或所述 UE根据所述 测量报告中携带的激活事件偏移值和当前的连接帧号 CFN计算得到的第 一计时器的计时值, 或所述 U E根据网络下发的加权因子和链路失败计时 器 T313的计时值计算得到的第一计时器的计时值。
具体的, 网络侧可以通过公共信令下发第一计时器的计时值给 UE,
也可以通过用于配置第一计时器的计时值的专用信令将第一计时器的计 时值下发给 UE, 本申请对此不做限定。 或者, UE 与网络可以在通信协 议中预先约定第一计时器的计时值。
特别的, 当步骤 301 中 UE向 RNC发送的是 1D事件的测量报告, 且 目标小区是快速小区小区切换的预配小区时, UE可以根据所述 1D事件 测量报告中携带的激活事件偏移值和 CFN计算得到的第一计时器的计时 值。 其中, 在一种应用场景中, 在 UE发送的测量报告中携带有配置给目 标小区的不为 0 的 "激活事件偏移" 值。 第一计时器的计时值是当前的 CFN加上激活事件偏移。 UE在发送测量报告后开始监听预配的目标小区 发送的快速小区小区切换信令。若在第一计时器超时后未收到源小区或目 标小区发送的小区切换信令, 则进行小区重选并发起小区更新, 小区更新 消息中携带的原因值为小区切换失败、 无线链路失败或其他特殊值。 在另 一种应用场景中, 在 UE发送的测量报告中没有携带 "激活事件偏移"值, 或携带了值为 0 "激活事件偏移" 值。 UE在发送测量报告后启动第一计 时器, 并连续监听预配的目标小区发送的快速小区小区切换信令。 在第一 计时器超时时,若未收到源小区发送的小区切换信令或目标小区发送的快 速小区切换信令, 则进行小区重选并在重选后的小区发起小区更新, 在小 区更新消息中携带的原因值为小区切换失败、 无线链路失败或其他特殊 值。
另外, UE还可以通过加权因子的方式计算得到第一计时器的计时值。 例如, UE与网络已通过通信协议约定了一个链路失败计时器 T313 的计 时值, 网络向 UE下发一个基于移动速度计时值的加权因子, 比如, 下发 高速状态对应的加权因子。 在 UE向 RNC发送测量报告后, 可以根据当
前的加权因子与 T313的计时值的乘积计算得到第一计时器的计时值, 从 而启动第一计时器。 或者, UE与网络可以预先约定多个加权因子, 或者 网络侧可以周期性地根据 UE状态为 UE配置合适的加权因子, 对于不同 的 U E状态选择不同的加权因子。 加权因子的计时值可以基于非边缘和边 缘的加权因子不同, 基于高速移动和低速移动 UE的加权因子不同, 基于 UE的目标小区的类型和服务小区的类型的不同和相同时可以釆用不同的 加权因子。 其中, 判断 UE处于中心和边缘的方式可以通过多种方式, 比 如, 当服务小区的接收信号的码功率( Received Signal Code Power, RSCP ) 值高于一定的值为非边缘, 服务小区的 RSCP值低于一定的值为边缘; 比 如, UE的上行发送功率高于一定门限时判断为边缘, 低于一定门限是判 断为非边缘。 并且, 对于不同的场景的加权因子也可以不一样, 例如小区 切换场景的加权因子较小,而对于处于连接态的非小区切换场景的加权因 子相对更大。 当然, 上述为几种通过加权因子计算第一计时器的计时值的 举例, 本申请为佯细描述的其他实现方式也在本申请要求的保护范围内。
303、 UE读取邻区的系统广播信息, 以便在发起小区更新过程前获得 重选小区的系统广播信息。
其中, 步骤 303可以在 UE启动第一计时器后的合适时机开始执行。 例如, 可以在第一计时器启动后立刻读取邻区的系统广播信息, 或者可以 在启动第一计时器后一段时间读取邻区的系统广播信息,或者也可以在小 区重选时读取邻区的系统广播信息, 当然也可以在小区重选后进行, 本申 请实施例对此不做限定。
304、 在第一计时器超时前是否满足小区切换条件; 若在第一计时器 超时前, 满足小区切换条件, 执行步骤 305; 若第一计时器超时, 未满足
小区切换条件, 执行步骤 306。
其中, 所述未满足小区切换条件包括: 在所述第一计时器超时时未接 收到小区切换信令;或,在所述第一计时器超时时未接收到小区切换信令, 且服务小区的信噪比或信道质量指示 ( Channel Quality Indication, CQI ) 5 小于预定门限; 或, 在所述第一计时器超时时未接收到小区切换信令, 且 服务小区的信噪比或信道质量指示 CQI在一段时间内持续小于预定门限。 小区切换信令可以为激活集更新 ASU ( Active set Update ), 无线承载重配 置 RBR ( Radio Bearer Reconfiguration )、 物理信道重配置 PCR ( Physical Channel Reconfiguration ) 或传输信道重酉己置 TCR ( Transport Channel i o Reconfiguration ) 等小区切换消息, 本实施例对此不做限定。
可以理解的是, 所述信噪比可以为信噪比( SIR , Signal to Interference ratio ), 或每码片的接收能量和宽带的功率密度比 (英文简称为 Ec/No , 或 RSCP/RSSI , 英文解释为 Received energy per chip divided by the power density in the band )„ 其中, 预定门限可以是网络下发给 UE , 也可以是约
15 定的。 持续的一段时间可以是和第一计时器的计时值一样大小的值, 也可 以是比第一计时器的计时值小的一段时间, 该值可以是网络发给 UE , 也 可以是约定的。
305、 UE终止所述第一计时器, 执行正常小区切换流程。
其中, 与现有协议中的小区切换类似, 在计时器 T313超时之前, UE 0 接收到小区切换信令, 则会根据小区切换信令小区切换到目标小区。 在本 实施例中, 不同的是第一计时器的启动时机比 T313的启动早, 第一定时 器的计时值也可以比 T313的计时值小。
306、 UE进行小区重选, 向重选后的小区所对应的 RNC发送小区更
新消息。
其中, 所述小区更新消息中携带的更新原因为无线链路失败 RLF、 小 区切换失败 HOF或特定值。 发起小区更新消息前可能需要用到重选后的 小区的系统广播信息, 如果步骤 303 已经获取了重选小区的系统广播信 息, 则这里可以使用已获取的系统广播信息, 不用重复获取。
307、 UE接收所述 RNC发送的小区更新确认消息, 以便在重选后的 小区建立无线链路。
值得说明的是, 本申请的内容可以应用与 LTE或 TD-SCDMA等通信 系统中, 本申请实施例对此不做限定。
本申请实施例提供的链路重建方法,UE在向 RNC发送测量报告后启 动第一计时器, 并在所述第一计时器超时且未满足小区切换条件时, 进行 小区重选并发起小区更新过程, 与现有技术中 UE需要等待满足无线链路 失败条件后才进行小区重选相比, 不用等待多个失步指示和同步指示, 而 是直接进行倒计时, 可以减少 UE小区切换失败情况下的等待时间, 可以 更快地启动重建无线链路的过程,从而降低小区切换失败带来的业务中断 时延, 提高服务质量。 同时, 可不影响传统的无线链路失败的检测机制。 本申请另一实施例提供一种链路重建方法, 如图 4所示。
401、 在用户设备 UE接收到 N313个失步指示后, 启动第二计时器; 其中, N313为大于 0的整数, 所述第二计时器的计时值小于链路失败计 时器 T313的计时值。
其中, 在本实施例中 UE处于连接态, 并没有发送测量报告来触发小 区切换过程, UE的物理层检测到失步后, 上报给 UE高层。 N313是个大
于 0的整数, 也就是说 UE在接收到多个失步指示后确定链路失步, 存在 链路失败的可能。 但是在发现链路失步之后, 链路也有可能重新达到同步 的状况, 因此不会立即判断无线链路失败, 而是启动第二计时器以判断是 否链路失败。 例如, N313的计时值可以是 1、 2、 4、 10、 20、 50、 100或 200等。 T313也是可以根据系统或 UE的实际情况进行设定的计时器, 可 以设置在 0到 15秒, 例如 T313的计时值可以是 5秒。
402、 若 UE在所述第二计时器超时时未接收到 N315个同步指示, 则 进行小区重选并发起小区更新过程, 以重新建立无线链路; 其中, N315 为大于 0的整数。
其中, UE的物理层也可以确定链路同步, 然后上报给 UE的高层。 同样的 N315是大于等于 1 的整数, 当 UE接收到 N315个同步指示后可 以认定为链路没有失败, 可以继续现有业务过程。
需要说明的是,本申请实施例中各步骤的具体内容可以参考图 5和图 6对应实施例中的相应内容, 本实施例这里不再赘述。
本申请实施例提供的链路重建方法, UE在链路失步后启动网络配置 的第二计时器, 从而确定是否进行小区重选, 与现有技术中 UE需要等待 满足无线链路失败条件后才进行小区重选相比,第二计时器的计时值可以 由网络配置的第二计时器的计时值或加权因子得到,第二计时器的计时值 可以根据 UE所处的状态进行灵活配置, 从而不仅可以减少 UE小区切换 失败情况下的等待时间, 降低小区切换失败带来的业务中断时延, 还可以 在链路不稳定等待恢复同步时保证充足的等待时间, 提高服务质量。 本发明另一实施例提供一种链路重建方法, 如图 5所示。
501、 无线网络控制器 RNC向用户设备 UE下发用于计算第二计时器 的加权因子; 其中, 所述第二计时器用于供所述 UE确定所述第二计时器 超时未接收到 N315个同步指示时进行小区重选并发起小区更新过程, 所 述 N315为大于 0的整数。
502、 接收所述 UE发送的小区更新消息, 向 UE发送小区更新确认 消息, 以重新建立所述 UE的无线链路。
需要说明的是,本申请实施例中各步骤的具体描述可以参考图 4和图 6对应的实施例中的内容, 本实施例这里不再重复赘述。
本申请实施例提供的链路重建方法, UE在链路失步后启动网络配置 的第二计时器, 从而确定是否进行小区重选, 与现有技术中 UE需要等待 满足无线链路失败条件后才进行小区重选相比,第二计时器的计时值可以 由网络配置的加权因子得到, 第二计时器的计时值可以根据 UE所处的状 态进行灵活配置,从而不仅可以减少 UE小区切换失败情况下的等待时间 , 降低小区切换失败带来的业务中断时延,还可以在链路不稳定等待恢复同 步时保证充足的等待时间, 提高服务质量。 本申请另一实施例提供一种链路重建方法, 如图 6所示。
601、 RNC向 UE下发用于计算第二计时器的加权因子。
在本实施例中, RNC向 UE下发第二计时器的计时值的方式可以有多 种实现方式, 601所釆用的下发加权因子的方式为其中一种实现方式。 在 另一种实现方式中, RNC也可以直接将第二计时器的计时值发送给 UE。 类似的, 还可以有其他配置第二计时器的计时值的方式, 本实施例不再一 一举例。 另外, 所述第二计时器的计时值至少包括一下三种配置方式: 一
种为网络下发的第二计时器的计时值; 第二种为所述 UE与网络预先约定 的第二计时器的计时值; 第三种为所述 U E根据网络下发的加权因子和链 路失败计时器 T313的计时值计算得到的第二计时器的计时值; 其中所述 加权因子为小于 1的非负数。 在实际应用中, 可以根据系统需求选择其中 一种配置方式, 本实施例对此不做限定。
其中, 所述第二计时器用于供所述 UE确定所述第二计时器超时未接 收到 N315 个同步指示时进行小区重选并发起小区更新过程, 所述 N315 为大于 0的整数。 所述第二计时器的计时值小于链路失败计时器 T313的 计时值。
602、 UE在接收到 N313个失步指示后, 启动第二计时器。
其中, N313为大于 0的整数, 也就是说 UE接收到多个失步指示才 表明 UE现有的无线链路传输质量较差, 不能符合 UE的通信质量要求。
603、 UE在所述第二计时器超前是否接收到 N315个同步指示; 若在 第二计时器超时前接收到 N315个同步指示, 则执行步骤 604; 若在第二 计时器超时前未接收到 N315个同步指示, 则执行步骤 605。
604、 UE终止所述第二计时器, 继续常规通信。
其中, 与现有协议类似, UE处于连接态时通过步骤 603确定链路处 于同步状态, 并未发生链路失败的情况, 则可以继续 UE当前链路中的通 信业务。 在本实施例中, 不同的是第二计时器的计时值是通过加权因子和 链路失败计时器 T313的计时值计算得到的, 可以根据 UE所处状态选取 不同的加权因子, 从而满足不同场景下的第二计时器的计时值的需求。
605、 UE进行小区重选, 向重选后的小区所对应的 RNC发送小区更 新消息, 其中所述小区更新消息中携带的更新原因为无线链路失败 RLF、
小区切换失败 HOF或特定值。
606、 UE接收所述 RNC发送的小区更新确认消息, 以便在重选后的 小区建立无线链路。
需要说明的是,本申请实施例中各步骤的具体内容可以参考图 4和图 5对应实施例中的相应内容, 本实施例这里不再赘述。 本申请的实施例可 以应用与 LTE或 TD-SCDMA等通信系统中, 本申请对此不做限定。
本申请实施例提供的链路重建方法, UE在链路失步后启动网络配置 的第二计时器, 从而确定是否进行小区重选, 与现有技术中 UE需要等待 满足无线链路失败条件后才进行小区重选相比,第二计时器的计时值可以 由网络配置的加权因子得到, 第二计时器的计时值可以根据 UE所处的状 态进行灵活配置,从而不仅可以减少 UE小区切换失败情况下的等待时间 , 降低小区切换失败带来的业务中断时延,还可以在链路不稳定等待恢复同 步时保证充足的等待时间, 提高服务质量。 本申请另一实施例提供一种 UE, 如图 7所示, 包括: 发射器 71和处 理器 72。
发射器 71 , 用于向 RNC发送测量报告; 处理器 72 , 用于在所述发射 器 71发送测量报告后, 启动第一计时器; 所述处理器 72, 还用于当所述 第一计时器超时且未满足小区切换条件时,进行小区重选并发起小区更新 过程, 以重新建立无线链路。
进一步的, 所述处理器 72还用于: 当在所述第一计时器超时之前满 足小区切换条件时, 终止所述第一计时器。
进一步的, 所述未满足小区切换条件包括: 在所述第一计时器超时时
未接收到小区切换信令; 或, 在所述第一计时器超时时未接收到小区切换 信令, 且服务小区的信噪比或信道质量指示 CQI 小于预定门限; 或, 在 所述第一计时器超时时未接收到小区切换信令,且服务小区的信噪比或信 道质量指示 CQI在一段时间内持续小于预定门限。
进一步的, 所述处理器 72 , 还用于在重选小区后指示所述发射器 71 在重选后的小区发送小区更新消息; 所述发射器 71 , 还用于在所述处理 器 72的指示下向重选后的小区所对应的 RNC发送小区更新消息,其中所 述小区更新消息中携带的更新原因为无线链路失败 RLF、 小区切换失败 HOF或特定值; 所述 UE还包括: 接收器 73 , 用于接收所述 RNC发送的 小区更新确认消息, 以便在重选后的小区建立无线链路。
进一步的, 所述测量 4艮告包括: 1A、 1B、 1C或 ID事件的测量 4艮告。 进一步的, 所述 UE还包括: 存储器 74 , 用于存储所述第一计时器的 计时值。
所述第一计时器的计时值包括:网络下发的第一计时器的计时值,或, 所述 UE与网络预先约定的第一计时器的计时值, 或, 所述 UE根据所述 测量报告中携带的激活事件偏移值和 UE的当前连接帧号 CFN计算得到 的第一计时器的计时值, 或, 所述 UE根据网络下发的加权因子和链路失 败计时器 T313的计时值计算得到的第一计时器的计时值。
进一步的, 所述处理器 72 , 还用于在启动第一计时器之后, 触发所 述接收器 73接收邻区的系统广播信息; 所述接收器 73 , 还用于在所述处 理器 72的触发下接收邻区的系统广播; 所述处理器 72, 还用于从所述接 收器 73接收的系统广播中读取邻区的系统广播信息, 以便在发起小区更 新过程前获得重选小区的系统广播信息。
其中, 发射器 71和接收器 73用于装置与其他设备或通信网络(例如 但不限于以太网, 无线接入网 ( Radio Access Network, RAN ), 无线局域 网 ( Wireless Local Area Network, WLAN ) 等 ) 之间的通信。
存储器 74可以是只读存储器 ( Read Only Memory , ROM ), 静态存 储设备, 动态存储设备或者随机存取存储器 (Random Access Memory, RAM )。 存储器 74 可以存储操作系统和其他应用程序。 在通过软件或者 固件来实现本发明实施例提供的技术方案时,用于实现本发明实施例提供 的技术方案的程序代码保存在存储器 74中, 并由处理器 72来执行。
处理器 72 可以釆用通用的中央处理器 (Central Processing Unit , CPU ) , 啟处理器, 应用专用集成电路 ( Application Specific Integrated Circuit, ASIC ), 或者一个或多个集成电路, 用于执行相关程序, 以实现 本发明实施例所提供的技术方案。
应注意, 尽管图 7所示的硬件仅仅示出了发射器 71、 接收器 73、 存 储器 74和处理器 72 , 但是在具体实现过程中, 本领域的技术人员应当明 白,该终端还包含实现正常运行所必须的其他器件。 同时,根据具体需要, 本领域的技术人员应当明白, 还可包含实现其他功能的硬件器件。
需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考图 1、 2和 3对应实施例中的相应内容, 本实施例这里不再 赘述。
本申请实施例提供的 UE , 在向 RNC发送测量报告后启动第一计时 器, 并在所述第一计时器超时且未满足小区切换条件时, 进行小区重选并 发起小区更新过程, 与现有技术中 UE需要等待满足无线链路失败条件后
才进行小区重选相比, 不用等待多个失步指示和同步指示, 而是直接进行 倒计时, 可以减少 UE小区切换失败情况下的等待时间, 可以更快地启动 重建无线链路的过程, 从而降低小区切换失败带来的业务中断时延, 提高 服务质量。 本申请另一实施例提供一种 UE, 如图 8所示, 该 UE包括: 接收器 81、 处理器 82。
接收器 81 , 用于接收失步指示和同步指示; 处理器 82 , 用于在所述 接收器 81接收到 N313个失步指示后, 启动第二计时器; 其中, N313为 大于 0的整数, 所述第二计时器的计时值小于链路失败计时器 T313的计 时值; 所述处理器 82 , 还用于当在所述第二计时器超时所述接收器未接 收到 N315个同步指示时, 进行小区重选并发起小区更新过程, 以重新建 立无线链路; 其中, N315为大于 0的整数。
进一步的, 所述处理器 82还用于: 当在所述第一计时器超时之前所 述接收器接收到 N315个同步指示时, 终止所述第一计时器。
进一步的, 该 UE还包括: 发射器 83 ; 所述处理器 82, 还用于在重 选小区后指示所述发射器 83在重选后的先驱发送小区更新消息; 所述发 射器 83 , 用于在所述处理器 82 的指示下向重选后的小区所对应的 RNC 发送小区更新消息,其中所述小区更新消息中携带的更新原因为无线链路 失败 RLF、 小区切换失败 HOF或特定值; 所述接收器 81 , 还用于接收所 述 RNC发送的小区更新确认消息, 以便在重选后的小区建立无线链路。
进一步的, 该 UE还包括: 存储器 84, 用于存储所述第二计时器的计 时值; 所述第二计时器的计时值包括: 网络下发的第二计时器的计时值,
所述 UE与网络预先约定的第二计时器的计时值, 或所述 UE根据网络下 发的加权因子和链路失败计时器 T313的计时值计算得到的第二计时器的 计时值; 其中所述加权因子为小于 1的非负数。
进一步的, 所述接收器 81 , 还用于在所述处理器 82启动第二计时器 之前,接收到所述 RNC下发的一个或多个所述加权因子;所述处理器 82 , 还用于根据所述 UE 所处的状态确定加权因子; 根据确定的加权因子和 T313的计时值计算得到第二计时器的计时值。
其中, 发射器 83和接收器 81用于装置与其他设备或通信网络(例如 但不限于以太网, 无线接入网 ( Radio Access Network, RAN ), 无线局域 网 ( Wireless Local Area Network, WLAN ) 等 ) 之间的通信。
存储器 84可以是只读存储器 ( Read Only Memory , ROM ), 静态存 储设备, 动态存储设备或者随机存取存储器 (Random Access Memory, RAM )。 存储器 84 可以存储操作系统和其他应用程序。 在通过软件或者 固件来实现本发明实施例提供的技术方案时,用于实现本发明实施例提供 的技术方案的程序代码保存在存储器 84中, 并由处理器 82来执行。
处理器 82 可以釆用通用的中央处理器 (Central Processing Unit , CPU ) , 啟处理器, 应用专用集成电路 ( Application Specific Integrated Circuit, ASIC ), 或者一个或多个集成电路, 用于执行相关程序, 以实现 本发明实施例所提供的技术方案。
应注意, 尽管图 7所示的硬件仅仅示出了发射器 83、 接收器 81、 存 储器 84和处理器 82 , 但是在具体实现过程中, 本领域的技术人员应当明 白,该终端还包含实现正常运行所必须的其他器件。 同时,根据具体需要, 本领域的技术人员应当明白, 还可包含实现其他功能的硬件器件。
需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考图 4、 5和 6对应实施例中的相应内容, 本实施例这里不再 赘述。
本申请实施例提供的 UE,在链路失步后启动网络配置的第二计时器, 从而确定是否进行小区重选, 与现有技术中 UE需要等待满足无线链路失 败条件后才进行小区重选相比,第二计时器的计时值可以由网络配置的第 二计时器的计时值或加权因子得到, 第二计时器的计时值可以根据 UE所 处的状态进行灵活配置, 从而不仅可以减少 UE小区切换失败情况下的等 待时间, 降低小区切换失败带来的业务中断时延, 还可以在链路不稳定等 待恢复同步时保证充足的等待时间, 提高服务质量。 本申请另一实施例提供一种 RNC , 如图 9所示, 该 RNC包括: 发射 器 91、 接收器 92。
发射器 91 , 用于向用户设备 UE下发第一计时器的计时值; 其中, 第 一计时器用于供所述 UE确定所述第一计时器超时且未满足小区切换条件 时进行小区重选并发起小区更新过程; 接收器 92 , 用于接收所述 UE发送 的小区更新消息, 向 UE发送小区更新确认消息, 以重新建立所述 UE的 无线链路。
其中, 所述未满足小区切换条件包括: 在所述第一计时器超时时所述 UE未接收到小区切换信令; 或, 在所述第一计时器超时时所述 UE未接 收到小区切换信令, 且服务小区的信噪比或信道质量指示 CQI 小于预定 门限; 或, 在所述第一计时器超时时所述 UE未接收到小区切换信令, 且
服务小区的信噪比或信道质量指示 CQI在一段时间内持续小于预定门限。 需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考上述方法实施例中的相应内容, 本实施例这里不再赘述。
本申请实施例提供的 RNC , 为 UE分配计时器计时值, 以便 UE在第 一计时器超时且未满足小区切换条件时进行小区重选并发起小区更新过 程, 与现有技术中 UE需要等待满足无线链路失败条件后才进行小区重选 相比, 不用等待多个失步指示和同步指示, 而是直接进行倒计时, 可以减 少 UE小区切换失败情况下的等待时间, 可以更快地启动重建无线链路的 过程, 从而降低小区切换失败带来的业务中断时延, 提高服务质量。 本申请另一实施例提供一种 RNC , 如图 10所示, 该 RNC 包括: 发 射器 1001、 接收器 1002、 处理器 1003。
发射器 1001 ,用于向用户设备 UE下发用于计算第二计时器的加权因 子; 其中, 所述第二计时器用于供所述 UE确定所述第二计时器超时未接 收到 N315 个同步指示时进行小区重选并发起小区更新过程, 所述 N315 为大于 0的整数; 接收器 1002 , 用于接收所述 UE发送的小区更新消息; 处理器 1003 , 用于根据所述接收器 1002接收到的小区更新消息生成小区 更新确认消息;所述发射器 1001 ,还用于向所述 UE发送所述处理器 1003 生成的所述小区更新确认消息, 以重新建立所述 UE的无线链路。
需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考上述方法实施例中的相应内容, 本实施例这里不再赘述。
本申请实施例提供的 RNC ,向 UE下发用于计算第二计时器的加权因 子, 以便 UE在链路失步后启动适当时长的第二计时器, 从而确定是否进 行小区重选, 与现有技术中 UE需要等待满足无线链路失败条件后才进行 小区重选相比,第二计时器的计时值可以由网络配置的第二计时器的计时 值或加权因子得到, 第二计时器的计时值可以根据 UE所处的状态进行灵 活配置, 从而不仅可以减少 UE小区切换失败情况下的等待时间, 降低小 区切换失败带来的业务中断时延,还可以在链路不稳定等待恢复同步时保 证充足的等待时间, 提高服务质量。 本申请另一实施例提供一种 UE, 如图 11所示, 该 UE可以包括: 计 时单元 1101、 重建单元 1102。
计时单元 1101 , 用于在向无线网络控制器 RNC发送测量^艮告后, 启 动第一计时器; 重建单元 1102, 用于在所述计时单元 1101的第一计时器 超时且未满足小区切换条件时, 进行小区重选并发起小区更新过程, 以重 新建立无线链路。
进一步的, 该 UE还包括: 终止单元 1103 , 用于在所述计时单元 1101 的第一计时器超时之前满足小区切换条件时, 终止所述第一计时器。
进一步的, 所述未满足小区切换条件包括: 在所述计时单元 1101 的 第一计时器超时时未接收到小区切换信令; 或, 在所述计时单元 1101 的 第一计时器超时时未接收到小区切换信令,且服务小区的信噪比或信道质 量指示 CQI小于预定门限; 或, 在所述计时单元 1101的第一计时器超时 时未接收到小区切换信令, 且服务小区的信噪比或信道质量指示 CQI 在 一段时间内持续小于预定门限。
进一步的, 所述重建单元 1102 包括: 重选子单元 11021、 发送子单 元 11022、 接收子单元 11023。
重选子单元 11021 , 用于在所述计时单元 1101 的第一计时器超时且 未满足小区切换条件时, 进行小区重选; 发送子单元 11022 , 用于在所述 重选子单元 11021重选后的小区向所述 RNC发送小区更新消息, 其中所 述小区更新消息中携带的更新原因为无线链路失败 RLF、 小区切换失败 HOF或特定值; 接收子单元 11023 , 用于接收所述 RNC发送的小区更新 确认消息, 以便在重选后的小区建立无线链路。
进一步的, 所述测量 4艮告包括: 1A、 1B、 1C或 ID事件的测量 4艮告。 进一步的, 所述计时单元 1101 的第一计时器的计时值包括: 网络下 发的第一计时器的计时值, 或, 所述 UE与网络预先约定的第一计时器的 计时值, 或, 所述 UE根据所述测量报告中携带的激活事件偏移值和 UE 的当前连接帧号 CFN计算得到的第一计时器的计时值, 或, 所述 UE根 据网络下发的加权因子和链路失败计时器 T 313的计时值计算得到的第一 计时器的计时值。
进一步的, 该 UE还包括: 读取单元 1104, 用于在所述计时单元 1101 启动第一计时器之后, 读取邻区的系统广播信息, 以便在所述重建单元 1102发起小区更新过程前获得重选小区的系统广播信息。
需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考图 1、 2和 3对应实施例中的相应内容, 本实施例这里不再 赘述。
本申请实施例提供的 UE, 在向 RNC发送测量报告后启动第一计时
器, 并在所述第一计时器超时且未满足小区切换条件时, 进行小区重选并 发起小区更新过程, 与现有技术中 UE需要等待满足无线链路失败条件后 才进行小区重选相比, 不用等待多个失步指示和同步指示, 而是直接进行 倒计时, 可以减少 UE小区切换失败情况下的等待时间, 可以更快地启动 重建无线链路的过程, 从而降低小区切换失败带来的业务中断时延, 提高 服务质量。 本申请另一实施例提供一种 UE, 如图 12所示, 该 UE还包括: 计时 单元 1201、 重建单元 1202。
计时单元 1201 ,用于在接收到 N313个失步指示后,启动第二计时器; 其中, N313为大于 0的整数, 所述第二计时器的计时值小于链路失败计 时器 T313的计时值。
重建单元 1202 , 用于在所述计时单元 1201的第二计时器超时未接收 到 N315个同步指示, 则进行小区重选并发起小区更新过程, 以重新建立 无线链路; 其中, N315为大于 0的整数。
进一步的, 该 UE还包括: 终止单元 1203 , 用于在所述计时单元 1201 的第二计时器超时之前接收到 N315个同步指示,则终止所述第二计时器。
进一步的, 所述重建单元 1202 包括: 重选子单元 12021、 发送子单 元 12022、 接收子单元 12023。
重选子单元 12021 , 用于在所述计时单元 1201 的第二计时器超时之 前未接收到 N315个同步指示时, 进行小区重选; 发送子单元 12022 , 用 于在所述重选子单元 12021重选后的小区向所述 RNC发送小区更新消息, 其中所述小区更新消息中携带的更新原因为无线链路失败 RLF、小区切换
失败 HOF或特定值; 接收子单元 12023 , 用于接收所述 RNC发送的小区 更新确认消息, 以便在重选后的小区建立无线链路。
进一步的, 所述计时单元 1201 的第二计时器的计时值包括: 网络下 发的第二计时器的计时值, 所述 UE与网络预先约定的第二计时器的计时 值, 或所述 UE根据网络下发的加权因子和链路失败计时器 T313的计时 值计算得到的第二计时器的计时值; 其中所述加权因子为小于 1 的非负 数。
进一步的, 该 UE还可以包括: 接收单元 1204、 因子单元 1205、 计 算单元 1206。
接收单元 1204 , 用于在所述计时单元 1201启动第二计时器之前, 接 收到所述 RNC下发的一个或多个所述加权因子; 因子单元 1205 , 用于根 据所述 UE所处的状态和所述接收单元 1204接收到的一个或多个所述加 权因子确定加权因子; 计算单元 1206 , 用于根据所述因子单元 1205确定 的加权因子和 T313的计时值计算得到第二计时器的计时值。
需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考图 4、 5和 6对应实施例中的相应内容, 本实施例这里不再 赘述。
本申请实施例提供的 UE,在链路失步后启动网络配置的第二计时器, 从而确定是否进行小区重选, 与现有技术中 UE需要等待满足无线链路失 败条件后才进行小区重选相比,第二计时器的计时值可以由网络配置的第 二计时器的计时值或加权因子得到, 第二计时器的计时值可以根据 UE所 处的状态进行灵活配置, 从而不仅可以减少 UE小区切换失败情况下的等
待时间, 降低小区切换失败带来的业务中断时延, 还可以在链路不稳定等 待恢复同步时保证充足的等待时间, 提高服务质量。 本申请另一实施例提供了一种无线网络控制器 RNC , 如图 13所示, 该 RNC包括: 发送单元 1301、 接收单元 1302。
发送单元 1301 ,用于向用户设备 UE下发第一计时器的计时值;其中, 第一计时器用于供所述 UE确定所述第一计时器超时且未满足小区切换条 件时进行小区重选并发起小区更新过程。
接收单元 1302 , 用于在所述发送单元 1301向所述 UE下发第一计时 器的计时值之后, 接收所述 UE发送的小区更新消息, 向 UE发送小区更 新确认消息, 以重新建立所述 UE的无线链路。
其中, 结合本申请的第三方面, 在第一种可能的实现方式中, 所述未 满足小区切换条件包括: 在所述第一计时器超时时所述 U E未接收到小区 切换信令;或,在所述第一计时器超时时所述 UE未接收到小区切换信令, 且服务小区的信噪比或信道质量指示 CQI 小于预定门限; 或, 在所述第 一计时器超时时所述 UE未接收到小区切换信令, 且服务小区的信噪比或 信道质量指示 CQI在一段时间内持续小于预定门限。
需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考上述方法实施例中的相应内容, 本实施例这里不再赘述。
本申请实施例提供的 RNC , 为 UE分配计时器计时值, 以便 UE在第 一计时器超时且未满足小区切换条件时进行小区重选并发起小区更新过 程, 与现有技术中 UE需要等待满足无线链路失败条件后才进行小区重选
相比, 不用等待多个失步指示和同步指示, 而是直接进行倒计时, 可以减 少 UE小区切换失败情况下的等待时间, 可以更快地启动重建无线链路的 过程, 从而降低小区切换失败带来的业务中断时延, 提高服务质量。 本申请另一实施例提供一种无线网络控制器 RNC , 如图 14所示, 该 RNC包括: 发送单元 1401、 接收单元 1402。
发送单元 1401 ,用于向用户设备 UE下发用于计算第二计时器的加权 因子; 其中, 所述第二计时器用于供所述 UE确定所述第二计时器超时未 接收到 N315个同步指示时进行小区重选并发起小区更新过程,所述 N315 为大于 0的整数。
接收单元 1402 , 用于在所述发送单元 1401向所述 UE下发所述加权 因子之后, 接收所述 UE发送的小区更新消息, 向所述 UE发送小区更新 确认消息, 以重新建立所述 UE的无线链路。
需要说明的是,本申请实施例中各功能单元的具体实施过程以及各个 模块之间的信息交互等内容, 由于与本发明方法实施例基于同一发明构 思, 可以参考上述方法实施例中的相应内容, 本实施例这里不再赘述。
本申请实施例提供的 RNC ,向 UE下发用于计算第二计时器的加权因 子, 以便 UE在链路失步后启动适当时长的第二计时器, 从而确定是否进 行小区重选, 与现有技术中 UE需要等待满足无线链路失败条件后才进行 小区重选相比,第二计时器的计时值可以由网络配置的第二计时器的计时 值或加权因子得到, 第二计时器的计时值可以根据 UE所处的状态进行灵 活配置, 从而不仅可以减少 UE小区切换失败情况下的等待时间, 降低小 区切换失败带来的业务中断时延,还可以在链路不稳定等待恢复同步时保
证充足的等待时间, 提高服务质量。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以 上述各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上 述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功 能模块, 以完成以上描述的全部或者部分功能。 上述描述的系统, 装置和 单元的具体工作过程, 可以参考前述方法实施例中的对应过程, 在此不再 赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述模块或单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可 以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示 或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装 置或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用软 件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品
销售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理 解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技 术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品 存储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是 个人计算机, 服务器, 或者网络设备等) 或处理器 (processor )执行本申 请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 (ROM , Read-Only Memory ) , 随机存取存储器 ( RAM , Random Access Memory )、 磁碟或者光盘等各种可以存储程序代 码的介质。
以上所述,以上实施例仅用以说明本申请的技术方案,而非对其限制; 尽管参照前述实施例对本申请进行了佯细的说明,本领域的普通技术人员 应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者 对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技 术方案的本质脱离本申请各实施例技术方案的精神和范围。
Claims
1、 一种链路重建方法, 其特征在于, 包括:
在用户设备 UE向无线网络控制器 RNC发送测量报告后, 启动第一计 时器;
若所述第一计时器超时且未满足小区切换条件, 则进行小区重选并发 起小区更新过程, 以重新建立无线链路。
2、 根据权利要求 1所述的方法, 其特征在于, 还包括:
若在所述第一计时器超时之前满足小区切换条件, 则终止所述第一计 时器。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述未满足小区切 换条件包括:
在所述第一计时器超时时未接收到小区切换信令; 或,
在所述第一计时器超时时未接收到小区切换信令, 且服务小区的信噪 比或信道质量指示 CQI小于预定门限; 或,
在所述第一计时器超时时未接收到小区切换信令, 且服务小区的信噪 比或信道质量指示 CQI在一段时间内持续小于预定门限。
4、 根据权利要求 1-3中任一项所述的方法, 其特征在于, 所述发起小 区更新过程包括:
向重选后小区所对应的 RNC发送小区更新消息,其中所述小区更新消 息中携带的更新原因为无线链路失败 RLF、 小区切换失败 HOF或特定值; 接收所述 RNC发送的小区更新确认消息,以便在重选后的小区建立无 线链路。
5、 根据权利要求 1-4中任一项所述的方法, 其特征在于, 所述测量报 告包括: 1A、 1B、 1C或 ID事件的测量报告。
6、 根据权利要求 1-5中任一项所述的方法, 其特征在于, 所述第一计 时器的计时值包括:
网络下发的第一计时器的计时值, 或
所述 UE与网络预先约定的第一计时器的计时值, 或
所述 UE根据所述测量报告中携带的激活事件偏移值和 UE的当前连接 帧号 CFN计算得到的第一计时器的计时值, 或
所述 U E根据网络下发的加权因子和链路失败计时器 T 313的计时值计 算得到的第一计时器的计时值。
7、 根据权利要求 1-6中任一项所述的方法, 其特征在于, 在启动第一 计时器之后, 还包括:
读取邻区的系统广播信息, 以便在发起小区更新过程前获得重选小区 的系统广播信息。
8、 一种链路重建方法, 其特征在于, 包括:
在用户设备 UE接收到 N313个失步指示后, 启动第二计时器; 其中, N313为大于 0的整数,所述第二计时器的计时值小于链路失败计时器 T313 的计时值;
若在所述第二计时器超时时未接收到 N315 个同步指示, 则进行小区 重选并发起小区更新过程, 以重新建立无线链路; 其中, N315为大于 0的 整数。
9、 根据权利要求 8所述的方法, 其特征在于, 还包括:
若在所述第二计时器超时之前接收到 N315 个同步指示, 则终止所述 第二计时器。
10、 根据权利要求 8或 9所述的方法, 其特征在于, 所述发起小区更 新过程包括:
向重选后的小区所对应的 RNC发送小区更新消息,其中所述小区更新 消息中携带的更新原因为无线链路失败 RLF、小区切换失败 HOF或特定值; 接收所述 RNC发送的小区更新确认消息,以便在重选后的小区建立无 线链路。
11、 根据权利要求 8-10中任一项所述的方法, 其特征在于, 所述第二 计时器的计时值包括: 网络下发的第二计时器的计时值, 所述 UE 与网络 预先约定的第二计时器的计时值, 或所述 UE根据网络下发的加权因子和 链路失败计时器 T313的计时值计算得到的第二计时器的计时值;其中所述 加权因子为小于 1的非负数。
12、 根据权利要求 11所述的方法, 其特征在于, 在启动第二计时器之 前, 该方法还包括:
接收到所述 RNC下发的一个或多个所述加权因子;
居所述 UE 所处的状态和所述一个或多个所述加权因子确定加权因 子;
根据确定的加权因子和 T313的计时值计算得到第二计时器的计时值。
13、 一种链路重建方法, 其特征在于, 包括:
无线网络控制器 RNC向用户设备 UE下发第一计时器的计时值;其中, 第一计时器用于供所述 UE确定所述第一计时器超时且未满足小区切换条 件时进行小区重选并发起小区更新过程;
接收所述 UE发送的小区更新消息, 向 UE发送小区更新确认消息, 以 重新建立所述 UE的无线链路。
14、 根据权利要求 13所述的方法, 其特征在于, 所述未满足小区切换 条件包括:
在所述第一计时器超时时所述 U E未接收到小区切换信令; 或, 在所述第一计时器超时时所述 UE 未接收到小区切换信令, 且服务小 区的信噪比或信道质量指示 CQI小于预定门限; 或,
在所述第一计时器超时时所述 UE 未接收到小区切换信令, 且服务小 区的信噪比或信道质量指示 CQI在一段时间内持续小于预定门限。
15、 一种链路重建方法, 其特征在于, 包括:
无线网络控制器 RNC向用户设备 UE下发用于计算第二计时器的加权 因子; 其中, 所述第二计时器用于供所述 UE确定所述第二计时器超时未 接收到 N315个同步指示时进行小区重选并发起小区更新过程, 所述 N315 为大于 0的整数;
接收所述 UE发送的小区更新消息,向所述 UE发送小区更新确认消息, 以重新建立所述 UE的无线链路。
16、 一种用户设备 UE, 其特征在于, 包括:
发射器, 用于向无线网络控制器 RNC发送测量报告;
处理器, 用于在所述发射器发送测量报告后, 启动第一计时器;
所述处理器,还用于当所述第一计时器超时且未满足小区切换条件时, 进行小区重选并发起小区更新过程, 以重新建立无线链路。
17、 根据权利要求 16所述的 UE, 其特征在于, 所述处理器还用于: 当在所述第一计时器超时之前满足小区切换条件时,终止所述第一计时器。
18、 根据权利要求 16或 17所述的 UE, 其特征在于, 所述未满足小区 切换条件包括:
在所述第一计时器超时时未接收到小区切换信令; 或,
在所述第一计时器超时时未接收到小区切换信令, 且服务小区的信噪 比或信道质量指示 CQI小于预定门限; 或,
在所述第一计时器超时时未接收到小区切换信令, 且服务小区的信噪 比或信道质量指示 CQI在一段时间内持续小于预定门限。
19、 根据权利要求 16-18中任一项所述的 UE, 其特征在于,
所述处理器, 还用于在重选小区后指示所述发射器在重选后的小区发 送小区更新消息;
所述发射器, 还用于在所述处理器的指示下向重选后的小区所对应的 RNC发送小区更新消息, 其中所述小区更新消息中携带的更新原因为无线 链路失败 RLF、 小区切换失败 HOF或特定值;
所述 UE还包括: 接收器, 用于接收所述 RNC发送的小区更新确认消 息, 以便在重选后的小区建立无线链路。
20、 根据权利要求 16-19中任一项所述的 UE, 其特征在于, 所述测量 报告包括: 1A、 1B、 1C或 ID事件的测量报告。
21、 根据权利要求 16-20中任一项所述的 UE, 其特征在于, 所述 UE 还包括: 存储器, 用于存储所述第一计时器的计时值
所述第一计时器的计时值包括:
网络下发的第一计时器的计时值, 或
所述 UE与网络预先约定的第一计时器的计时值, 或
所述 UE根据所述测量报告中携带的激活事件偏移值和 UE的当前连接 帧号 CFN计算得到的第一计时器的计时值, 或
所述 U E根据网络下发的加权因子和链路失败计时器 T 313的计时值计
算得到的第一计时器的计时值。
22、 根据权利要求 19所述的 UE, 其特征在于,
所述处理器, 还用于在启动第一计时器之后, 触发所述接收器接收邻 区的系统广播信息;
所述接收器, 还用于在所述处理器的触发下接收邻区的系统广播; 所述处理器, 还用于从所述接收器接收的系统广播中读取邻区的系统 广播信息, 以便在发起小区更新过程前获得重选小区的系统广播信息。
23、 一种用户设备 UE, 其特征在于, 包括:
接收器, 用于接收失步指示和同步指示;
处理器, 用于在所述接收器接收到 N313 个失步指示后, 启动第二计 时器; 其中, N313为大于 0的整数, 所述第二计时器的计时值小于链路失 败计时器 T313的计时值;
所述处理器, 还用于当在所述第二计时器超时所述接收器未接收到 N315个同步指示时, 进行小区重选并发起小区更新过程, 以重新建立无线 链路; 其中, N315为大于 0的整数。
24、 根据权利要求 23所述的 UE, 其特征在于, 所述处理器还用于: 当在所述第一计时器超时之前所述接收器接收到 N315 个同步指示时, 终 止所述第一计时器。
25、根据权利要求 23或 24所述的 UE, 其特征在于,还包括: 发射器; 所述处理器, 还用于在重选小区后指示所述发射器在重选后的先驱发 送小区更新消息;
所述发射器, 用于在所述处理器的指示下向重选后的小区所对应的 RNC发送小区更新消息, 其中所述小区更新消息中携带的更新原因为无线 链路失败 RLF、 小区切换失败 HOF或特定值;
所述接收器, 还用于接收所述 RNC发送的小区更新确认消息, 以便在 重选后的小区建立无线链路。
26、 根据权利要求 23-25中任一项所述的 UE, 其特征在于, 还包括: 存储器, 用于存储所述第二计时器的计时值;
所述第二计时器的计时值包括: 网络下发的第二计时器的计时值, 所
述 U E与网络预先约定的第二计时器的计时值,或所述 U E根据网络下发的 加权因子和链路失败计时器 T313 的计时值计算得到的第二计时器的计时 值; 其中所述加权因子为小于 1的非负数。
27、 根据权利要求 26所述的 UE, 其特征在于,
所述接收器, 还用于在所述处理器启动第二计时器之前, 接收到所述 RNC下发的一个或多个所述加权因子;
所述处理器, 还用于根据所述 UE 所处的状态确定加权因子; 根据确 定的加权因子和 T313的计时值计算得到第二计时器的计时值。
28、 一种无线网络控制器 RNC, 其特征在于, 包括:
发射器, 用于向用户设备 UE 下发第一计时器的计时值; 其中, 第一 计时器用于供所述 UE确定所述第一计时器超时且未满足小区切换条件时 进行小区重选并发起小区更新过程;
接收器, 用于接收所述 UE发送的小区更新消息, 向 UE发送小区更新 确认消息, 以重新建立所述 UE的无线链路。
29、 根据权利要求 28所述的 RNC, 其特征在于, 所述未满足小区切 换条件包括:
在所述第一计时器超时时所述 U E未接收到小区切换信令; 或, 在所述第一计时器超时时所述 UE 未接收到小区切换信令, 且服务小 区的信噪比或信道质量指示 CQI小于预定门限; 或,
在所述第一计时器超时时所述 UE 未接收到小区切换信令, 且服务小 区的信噪比或信道质量指示 CQI在一段时间内持续小于预定门限。
30、 一种无线网络控制器 RNC, 其特征在于, 包括:
发射器, 用于向用户设备 UE 下发用于计算第二计时器的加权因子; 其中, 所述第二计时器用于供所述 UE确定所述第二计时器超时未接收到 N315个同步指示时进行小区重选并发起小区更新过程, 所述 N315为大于 0的整数;
接收器, 用于接收所述 UE发送的小区更新消息;
处理器, 用于根据所述接收器接收到的小区更新消息生成小区更新确 认消息;
所述发射器, 还用于向所述 UE发送所述处理器生成的所述小区更新 确认消息, 以重新建立所述 UE的无线链路。
31、 一种用户设备 UE, 其特征在于, 包括:
计时单元, 用于在向无线网络控制器 RNC发送测量报告后, 启动第一 计时器;
重建单元, 用于在所述计时单元的第一计时器超时且未满足小区切换 条件时, 进行小区重选并发起小区更新过程, 以重新建立无线链路。
32、 根据权利要求 31所述的 UE, 其特征在于, 还包括:
终止单元, 用于在所述计时单元的第一计时器超时之前满足小区切换 条件时, 终止所述第一计时器。
33、 根据权利要求 31或 32所述的 UE, 其特征在于, 所述未满足小区 切换条件包括:
在所述计时单元的第一计时器超时时未接收到小区切换信令; 或, 在所述计时单元的第一计时器超时时未接收到小区切换信令, 且服务 小区的信噪比或信道质量指示 CQI小于预定门限; 或,
在所述计时单元的第一计时器超时时未接收到小区切换信令, 且服务 小区的信噪比或信道质量指示 CQI在一段时间内持续小于预定门限。
34、 根据权利要求 31-33中任一项所述的 UE, 其特征在于, 所述重建 单元包括:
重选子单元, 用于在所述计时单元的第一计时器超时且未满足小区切 换条件时, 进行小区重选;
发送子单元,用于在所述重选子单元重选后的小区向所述 RNC发送小 区更新消息, 其中所述小区更新消息中携带的更新原因为无线链路失败 RLF、 小区切换失败 HOF或特定值;
接收子单元, 用于接收所述 RNC发送的小区更新确认消息, 以便在重 选后的小区建立无线链路。
35、 根据权利要求 31-34中任一项所述的 UE, 其特征在于, 所述测量 报告包括: 1A、 1B、 1C或 ID事件的测量报告。
36、 根据权利要求 31-35中任一项所述的 UE, 其特征在于, 所述计时
单元的第一计时器的计时值包括:
网络下发的第一计时器的计时值, 或
所述 UE与网络预先约定的第一计时器的计时值, 或
所述 UE根据所述测量报告中携带的激活事件偏移值和 UE的当前连接 帧号 CFN计算得到的第一计时器的计时值, 或
所述 U E根据网络下发的加权因子和链路失败计时器 T 313的计时值计 算得到的第一计时器的计时值。
37、 根据权利要求 31-36中任一项所述的 UE, 其特征在于, 还包括: 读取单元, 用于在所述计时单元启动第一计时器之后, 读取邻区的系 统广播信息, 以便在所述重建单元发起小区更新过程前获得重选小区的系 统广播信息。
38、 一种用户设备 UE, 其特征在于, 包括:
计时单元, 用于在接收到 N313 个失步指示后, 启动第二计时器; 其 中, N313为大于 0的整数, 所述第二计时器的计时值小于链路失败计时器 T313的计时值;
重建单元, 用于在所述计时单元的第二计时器超时时未接收到 N315 个同步指示时, 进行小区重选并发起小区更新过程, 以重新建立无线链路; 其中, N315为大于 0的整数。
39、 根据权利要求 38所述的 UE, 其特征在于, 还包括:
终止单元, 用于在所述计时单元的第二计时器超时之前接收到 N315 个同步指示, 则终止所述第二计时器。
40、 根据权利要求 38或 39所述的 UE, 其特征在于, 所述重建单元包 括:
重选子单元, 用于在所述计时单元的第二计时器超时之前未接收到 N315个同步指示时, 进行小区重选;
发送子单元,用于在所述重选子单元重选后的小区向所述 RNC发送小 区更新消息, 其中所述小区更新消息中携带的更新原因为无线链路失败 RLF、 小区切换失败 HOF或特定值;
接收子单元, 用于接收所述 RNC发送的小区更新确认消息, 以便在重
选后的小区建立无线链路。
41、 根据权利要求 38-40中任一项所述的 UE, 其特征在于, 所述计时 单元的第二计时器的计时值包括: 网络下发的第二计时器的计时值, 所述 UE与网络预先约定的第二计时器的计时值, 或所述 UE根据网络下发的加 权因子和链路失败计时器 T313的计时值计算得到的第二计时器的计时值; 其中所述加权因子为小于 1的非负数。
42、 根据权利要求 41所述的 UE, 其特征在于, 还包括:
接收单元,用于在所述计时单元启动第二计时器之前,接收到所述 RNC 下发的一个或多个所述加权因子;
因子单元, 用于根据所述 UE 所处的状态和所述接收单元接收到的一 个或多个所述加权因子确定加权因子;
计算单元,用于根据所述因子单元确定的加权因子和 T313的计时值计 算得到第二计时器的计时值。
43、 一种无线网络控制器 RNC , 其特征在于, 包括:
发送单元, 用于向用户设备 UE 下发第一计时器的计时值; 其中, 第 一计时器用于供所述 UE确定所述第一计时器超时且未满足小区切换条件 时进行小区重选并发起小区更新过程;
接收单元, 用于在所述发送单元向所述 UE 下发第一计时器的计时值 之后, 接收所述 UE发送的小区更新消息, 向 UE发送小区更新确认消息, 以重新建立所述 UE的无线链路。
44、 根据权利要求 43 所述的 RNC, 其特征在于, 所述未满足小区切 换条件包括:
在所述第一计时器超时时所述 U E未接收到小区切换信令; 或, 在所述第一计时器超时时所述 UE 未接收到小区切换信令, 且服务小 区的信噪比或信道质量指示 CQI小于预定门限; 或,
在所述第一计时器超时时所述 UE 未接收到小区切换信令, 且服务小 区的信噪比或信道质量指示 CQI在一段时间内持续小于预定门限。
45、 一种无线网络控制器 RNC, 其特征在于, 包括:
发送单元, 用于向用户设备 UE下发用于计算第二计时器的加权因子;
其中, 所述第二计时器用于供所述 UE确定所述第二计时器超时未接收到 N315个同步指示时进行小区重选并发起小区更新过程, 所述 N315为大于 0的整数;
接收单元, 用于在所述发送单元向所述 UE 下发所述加权因子之后, 接收所述 UE发送的小区更新消息, 向所述 UE发送小区更新确认消息, 以 重新建立所述 UE的无线链路。
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