WO2015013934A1 - Procédé, dispositif et système de réglage de synchronisation - Google Patents

Procédé, dispositif et système de réglage de synchronisation Download PDF

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Publication number
WO2015013934A1
WO2015013934A1 PCT/CN2013/080564 CN2013080564W WO2015013934A1 WO 2015013934 A1 WO2015013934 A1 WO 2015013934A1 CN 2013080564 W CN2013080564 W CN 2013080564W WO 2015013934 A1 WO2015013934 A1 WO 2015013934A1
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WO
WIPO (PCT)
Prior art keywords
terminal
parameter
uplink
dpch
downlink channel
Prior art date
Application number
PCT/CN2013/080564
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English (en)
Chinese (zh)
Inventor
冯莉
郑潇潇
马雪利
张屹
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/080564 priority Critical patent/WO2015013934A1/fr
Priority to CN201380000886.3A priority patent/CN104641712B/zh
Publication of WO2015013934A1 publication Critical patent/WO2015013934A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, apparatus, and system for timing adjustment.
  • TDM Time Division Multiplex scheduling
  • the TDM scheduling requires the uplink TTI (Transmission Time Interval) alignment between different terminals in the same cell, that is, the UL (Uplink) DPCCH (Dedicated Physical Control Channel) of different terminals in the same cell.
  • the timing (UL T D PC C H ) is an integer multiple of the phase difference TTI. Since the UL DPCCH and the DL (Downlink) DPCH (Dedicated Physical Channel) have a fixed chip difference, the above requirements can be achieved by setting a reasonable DL DPCH frame offset (DL T DPCH ).
  • DL T DPCH refers to a frame timing difference of a DL DPCH or a downlink F-DPCH (framing a Dedicated Physical Channel) relative to a P-CCPCH (Primary Common Control Physical Channel).
  • Tcell difference and/or the existence of the BFN (Node B Frame Number) difference, and/or the RFN (RNC Frame Number Counter) cannot be accurately calibrated, resulting in different cells
  • the upstream TTI between the terminals cannot be aligned.
  • the terminal cannot be aligned with the uplink TTI (Transmission Time Interval) of the terminal in the changed serving cell.
  • the uplink TTI alignment of the terminal in the changed serving cell can be implemented by adjusting the downlink radio frame offset by hard handover.
  • Tcell refers to the radio frame boundary difference between the P-CCPCH of the cell and the BFN of the corresponding base station.
  • the inventor finds that at least the following problems exist in the prior art: adjusting the downlink channel frame offset by hard handover to reach the changed serving cell
  • the uplink TTI alignment of the terminal will result in a high dropped call rate, resulting in poor user experience.
  • Embodiments of the present invention provide a method and apparatus for timing adjustment, which are used to implement uplink TTI alignment between different terminals in the same J, and reduce call drop rate, thereby improving user experience.
  • the first aspect provides an overload control method, including: receiving a first parameter sent by a radio network controller, where the first parameter includes: a downlink channel frame offset of the terminal, and/or an uplink channel and a downlink of the terminal. a channel frame timing difference; determining, according to the first parameter, an uplink timing of the terminal; wherein, when the method is applied to a single carrier mechanism, the downlink channel frame offset of the terminal is compared to the terminal current The amount of adjustment of the downlink channel frame offset used is greater than 256 chips.
  • the receiving, by the receiving, the first parameter sent by the radio network controller is: receiving, by the radio network controller, a message that includes radio link addition information, where The message including the radio link addition information includes the first parameter; or, receiving the message that includes the serving cell change information sent by the radio network controller, where the message including the serving cell change information includes the first parameter; Or receiving a message that includes the radio link deletion information sent by the radio network controller, where the message that includes the radio link deletion information includes the first parameter.
  • the determining, by the first parameter, the uplink timing of the terminal includes: adding a wireless link Determining an uplink timing of the terminal according to the first parameter; or determining an uplink timing of the terminal according to the first parameter when the serving cell is changed; or, when deleting the wireless link, according to the The first parameter determines an uplink timing of the terminal.
  • the determining, by the first parameter, an uplink timing of the terminal includes: determining, by the terminal, a downlink DPCH/F-DPCH frame boundary of the terminal according to a downlink channel frame offset of the terminal, if the first parameter is a downlink channel frame offset of the terminal, Receiving at least one path of the downlink DPCH/F-DPCH according to the downlink DPCH/F-DPCH frame boundary of the terminal, and receiving the TO chips of the first path of the downlink DPCH/F-DPCH as the uplink DPCCH of the terminal a frame boundary, where the TO is a constant; or, if the first parameter is a timing difference between an uplink channel and a downlink channel frame of the terminal, the terminal is configured according to a downlink DPCH/F-DPCH frame currently used by the terminal.
  • the terminal determines, according to the downlink channel frame offset of the terminal, The downlink DPCH/F-DPCH frame boundary of the terminal is received, and at least one path of the downlink DPCH/F-DPCH is received according to the downlink DPCH/F-DPCH frame boundary of the terminal, and the first path of the downlink DPCH/F-DPCH is received.
  • the subsequent uplink channel and downlink channel frame timing difference chips are used as the terminal uplink DPCCH frame boundary.
  • the method is applied to a multi-carrier mechanism, where
  • the multi-carrier mechanism includes a primary carrier and at least one secondary carrier; and the first parameter sent by the receiving wireless network controller includes: receiving Determining, by the radio network controller, a first parameter for the primary carrier, and determining, by the first parameter, an uplink timing of the terminal, according to: determining, according to the first parameter of the primary carrier, An uplink timing of the terminal on the primary carrier; the method further includes: receiving a second parameter that is sent by the radio network controller for the secondary carrier, where the second parameter includes: the terminal The downlink channel frame offset and/or the uplink channel and the downlink channel frame timing difference of the terminal; determining the uplink timing of the terminal on the secondary carrier according to the second parameter for the secondary carrier.
  • a method for timing adjustment including: determining, by a radio network controller, a first parameter, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel of the terminal a frame timing difference; the first parameter is sent to the terminal/base station, so that the terminal/base station determines an uplink timing of the terminal according to the first parameter; wherein, the method is applied to a single carrier mechanism
  • the downlink channel frame offset of the terminal is greater than the 256 chips of the downlink channel frame offset currently used by the terminal.
  • the sending the first parameter to the terminal/base station includes: sending, to the terminal/base station, a message including radio link addition information, where the wireless The message of the link addition information includes the first parameter; or, the message that includes the serving cell change information is sent to the terminal/base station, where the message including the serving cell change information includes the first parameter; or The terminal/base station sends a message including radio link deletion information, and the message including the radio link deletion information includes the first parameter.
  • the determining, by the radio network controller, the first parameter, For one parameter, the preset rule is: after the terminal changes the serving cell, it is aligned with the uplink TTI of the terminal in the changed serving cell.
  • the method is applied to a multi-carrier mechanism, where
  • the multi-carrier mechanism includes a primary carrier and at least one a secondary carrier; the determining, by the radio network controller, the first parameter, comprising: the radio network controller determining a first parameter for the primary carrier; the transmitting the first parameter to the terminal/base station, such that Determining, by the terminal/base station, the uplink timing of the terminal according to the first parameter, including: sending, to the terminal/base station, a first parameter for the primary carrier, so that the terminal/base station according to the The first parameter of the primary carrier determines the uplink timing of the terminal on the primary carrier, and the method further includes: determining a second parameter for the secondary carrier, where the second parameter includes: a downlink channel frame offset and/or an uplink channel and a downlink channel frame timing difference of the terminal; transmitting the second parameter for the secondary carrier to the terminal/base station, so
  • a method for timing adjustment including: determining, by a radio network controller, a global uplink timing reference; determining, according to the global uplink timing reference, a downlink channel frame offset of each radio link of the terminal, so that the Terminals in the cell corresponding to each of the radio links reach an uplink TTI alignment; and send, to the terminal/base station, a downlink channel frame offset of each radio link of the terminal, so that the terminal/base station And determining an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal.
  • the fourth aspect provides a method for timing adjustment, including: receiving, by a terminal/base station, a downlink channel frame offset of each radio link of the terminal sent by the radio network controller; where the terminal and each radio chain The uplink TTI alignment of the terminal in the cell corresponding to the path; determining the uplink timing of each radio link of the terminal according to the downlink channel frame offset of each radio link of the terminal.
  • the fifth aspect provides a device for timing adjustment, including: a receiving unit, configured to receive a first parameter sent by a radio network controller, where the first parameter includes: a downlink channel frame offset of the terminal, and/or the a determining unit, configured to determine an uplink timing of the terminal according to the first parameter transmitted by the receiving unit, where the apparatus is applied to a single carrier mechanism
  • the downlink channel frame offset of the terminal is different from the downlink channel frame currently used by the terminal.
  • the amount of shift adjustment is greater than 256 chips.
  • the receiving unit is specifically configured to: receive, by the radio network controller, a message that includes radio link addition information, where the radio link includes information The message includes the first parameter; or, receiving a message that includes the serving cell change information sent by the radio network controller, where the message including the serving cell change information includes the first parameter; or receiving the wireless network
  • the message sent by the controller includes radio link deletion information, and the message including the radio link deletion information includes the first parameter.
  • the determining unit is specifically configured to determine, according to the first parameter, when adding a wireless link The uplink timing of the terminal is determined; or, when the serving cell is changed, determining the uplink timing of the terminal according to the first parameter; or determining the uplink timing of the terminal according to the first parameter when deleting the wireless link .
  • the device is the terminal, and the determining unit is specifically used to And determining, according to the downlink channel frame offset of the terminal, a downlink DPCH/F-DPCH frame boundary of the terminal, according to the terminal, if the first parameter is a downlink channel frame offset of the terminal, according to the terminal.
  • the downlink DPCH/F-DPCH frame boundary receives at least one path of the downlink DPCH/F-DPCH, and the TO chip that receives the first path of the downlink DPCH/F-DPCH is used as the uplink DPCCH frame boundary of the terminal, where The TO is a constant; or, if the first parameter is the timing difference between the uplink channel and the downlink channel frame of the terminal, according to the current downlink used by the terminal
  • the DPCH/F-DPCH frame boundary receives at least one path of the downlink DPCH/F-DPCH, and receives the uplink channel and the downlink channel frame timing difference chip after the first path of the downlink DPCH/F-DPCH as the a terminal uplink DPCCH frame boundary; or, if the first parameter is a downlink channel frame offset of the terminal and an uplink channel and a downlink channel frame timing difference of the terminal, according to a downlink channel frame offset of the terminal.
  • the downlink DPCH/F-DPCH frame boundary of the terminal is determined, and at least one path of the downlink DPCH/F-DPCH is received according to the downlink DPCH/F-DPCH frame boundary of the terminal, and the downlink is received.
  • the uplink channel and the downlink channel frame timing difference chip after the first path of the DPCH/F-DPCH are used as the terminal uplink DPCCH frame boundary.
  • the apparatus is applied to a multi-carrier mechanism, where
  • the multi-carrier mechanism includes a primary carrier and at least one secondary carrier, and the receiving unit is configured to receive a first parameter that is sent by the radio network controller for the primary carrier, where the determining unit is specifically configured to: Determining, by the first parameter of the primary carrier, an uplink timing of the terminal on the primary carrier; the receiving unit is further configured to receive, by the wireless network controller, a second a second parameter, where the second parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal; the determining unit is further configured to: according to the The second parameter of the secondary carrier determines an uplink timing of the terminal on the secondary carrier.
  • the sixth aspect provides a device for timing adjustment, including: a receiver and a processor, where the receiver is configured to receive a first parameter sent by a radio network controller, where the first parameter includes: a downlink of the terminal a channel frame offset and/or an uplink channel and a downlink channel frame timing difference of the terminal; the processor is configured to determine an uplink timing of the terminal according to the first parameter; wherein, the device is applied to a single In the case of the carrier mechanism, the amount of adjustment of the downlink channel frame offset of the terminal is greater than 256 chips compared to the downlink channel frame offset currently used by the terminal.
  • the receiver is specifically configured to: receive, by the radio network controller, a message that includes radio link addition information, where the radio link includes information The message includes the first parameter; or, receiving a message that includes the serving cell change information sent by the radio network controller, where the message including the serving cell change information includes the first parameter; or receiving the wireless network
  • the message sent by the controller includes radio link deletion information, and the message including the radio link deletion information includes the first parameter.
  • the processor is specifically configured to: when adding a wireless link, Determining an uplink timing of the terminal according to the first parameter; or determining, according to the first parameter, an uplink timing of the terminal when the serving cell is changed; or, when deleting the wireless link, according to the first The parameter determines the uplink timing of the terminal.
  • the device is the terminal, and the processor is specifically used to Determining, according to the downlink channel frame offset of the terminal, a downlink DPCH/F-DPCH frame boundary of the terminal, according to the terminal, if the first parameter is a downlink channel frame offset of the terminal, according to the terminal.
  • the downlink DPCH/F-DPCH frame boundary receives at least one path of the downlink DPCH/F-DPCH, and the TO chips that are received after the first path of the downlink DPCH/F-DPCH are used as the uplink DPCCH frame boundary of the terminal, where The TO is a constant; or, if the first parameter is the timing difference between the uplink channel and the downlink channel frame of the terminal, according to the current downlink used by the terminal
  • the DPCH/F-DPCH frame boundary receives at least one path of the downlink DPCH/F-DPCH, and receives the uplink channel and the downlink channel frame timing difference chip after the first path of the downlink DPCH/F-DPCH as the a terminal uplink DPCCH frame boundary; or, if the first parameter is a downlink channel frame offset of the terminal and an uplink channel and a downlink channel frame timing difference of the terminal, according to a downlink channel frame offset of the terminal.
  • the downlink DPCH/F-DPCH frame boundary of the terminal is determined, and at least one path of the downlink DPCH/F-DPCH is received according to the downlink DPCH/F-DPCH frame boundary of the terminal, and the downlink DPCH/F-DPCH is received.
  • the uplink channel and the downlink channel frame timing difference chip after a path are used as the terminal uplink DPCCH frame boundary.
  • the apparatus is applied to a multi-carrier mechanism, where
  • the multi-carrier mechanism includes a primary carrier and at least one secondary carrier;
  • the receiver is specifically configured to receive a first parameter that is sent by the radio network controller for the primary carrier, where the processor is specifically configured to: Determining, by the first parameter of the primary carrier, an uplink timing of the terminal on the primary carrier;
  • the receiver is further configured to receive, by the wireless network controller, a second a second parameter, where the second parameter includes: a downlink channel frame of the terminal The offset and/or the uplink channel and the downlink channel frame timing of the terminal are different;
  • the processor is further configured to: determine, according to the second parameter of the secondary carrier, that the terminal is on the secondary carrier Upstream timing.
  • a radio network controller including: a determining unit, configured to determine a first parameter, where the first parameter includes: a downlink channel frame offset of the terminal, and/or an uplink channel and a downlink of the terminal a channel frame timing difference; the sending unit, configured to send, to the terminal/base station, the first parameter that is sent by the determining unit, so that the terminal/base station determines an uplink timing of the terminal according to the first parameter; Wherein, when the radio network controller is applied to the single carrier mechanism, the downlink channel frame offset of the terminal is greater than the current channel frame offset currently used by the terminal.
  • the sending unit is specifically configured to: send, to the terminal/base station, a message that includes radio link addition information, where the message that includes the radio link addition information includes Transmitting, by the terminal/base station, a message including serving cell change information, where the message including the serving cell change information includes the first parameter; or sending, by the terminal/base station, the wireless The message of the link deletion information, the message including the radio link deletion information includes the first parameter.
  • the determining unit is specifically configured to: determine, according to a preset rule, a first parameter, where the preset rule is The terminal is aligned with the uplink TTI of the terminal in the changed serving cell after changing the serving cell.
  • the multi-carrier mechanism includes a primary carrier and at least one secondary carrier.
  • the determining unit is specifically configured to determine a first parameter for the primary carrier, where the sending unit is specifically configured to: Transmitting a first parameter for the primary carrier, so that the terminal/base station determines an uplink timing of the terminal on the primary carrier according to the first parameter for the primary carrier;
  • the determining unit is further configured to: determine a second parameter for the secondary carrier, where the second parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing of the terminal
  • the sending unit is further configured to: send the second parameter for the secondary carrier to the terminal/base station, so that the terminal/base station determines, according to the second parameter for the secondary carrier, The uplink timing of the terminal on the secondary carrier.
  • a radio network controller including: a processor and a transmitter, where the processor is configured to determine a first parameter, where the first parameter includes: a downlink channel frame offset of the terminal and/or Or the uplink channel and the downlink channel frame timing of the terminal are different; the transmitter is configured to send the first parameter to the terminal/base station, so that the terminal/base station determines the according to the first parameter. Uplink timing of the terminal; wherein, when the radio network controller is applied to the single carrier mechanism, the downlink channel frame offset of the terminal is compared with the downlink channel frame offset currently used by the terminal More than 256 chips.
  • the transmitter is specifically configured to: send, to the terminal/base station, a message that includes radio link addition information, where the message that includes the radio link addition information includes Transmitting, by the terminal/base station, a message including serving cell change information, where the message including the serving cell change information includes the first parameter; or sending, by the terminal/base station, the wireless The message of the link deletion information, the message including the radio link deletion information includes the first parameter.
  • the processor is specifically configured to: determine, according to a preset rule, a first parameter, where the preset rule is The terminal is aligned with the uplink TTI of the terminal in the changed serving cell after changing the serving cell.
  • the multi-carrier mechanism includes a primary carrier and at least one secondary carrier, where the processor is specifically configured to determine, for the primary carrier
  • the first parameter is configured to: send, to the terminal/base station, a first parameter for the primary carrier, so that the terminal/base station determines according to the first parameter that is configured for the primary carrier An uplink timing of the terminal on the primary carrier;
  • the processor is further configured to: determine a second parameter for the secondary carrier, where the second parameter includes: a downlink channel frame offset of the terminal And the uplink channel and the downlink channel frame timing of the terminal are different;
  • the transmitter is further configured to send the second parameter for the secondary carrier to the terminal/base station, so that the terminal/ The base station determines, according to the second parameter of the secondary carrier, an uplink timing of the terminal on the secondary carrier.
  • a radio network controller including: a first determining unit, configured to determine a global uplink timing reference; a second determining unit, configured to determine, according to the global uplink timing reference determined by the first determining unit a downlink channel frame offset of each radio link of the terminal, so that the terminal and the terminal in the cell corresponding to each radio link reach an uplink TTI alignment; and a sending unit, configured to send to the terminal/base station Determining, by the second determining unit, a downlink channel frame offset of each radio link of the terminal, so that the terminal/base station determines the downlink channel frame offset according to each radio link of the terminal The uplink timing of each wireless link of the terminal.
  • a wireless network controller including: a processor and a transmitter, where the processor is configured to determine a global uplink timing reference; and determine, according to the global uplink timing reference, each wireless link of the terminal
  • the downlink channel frame offset is such that the terminal in the cell corresponding to each radio link reaches the uplink TTI alignment;
  • the transmitter is configured to send the terminal to each wireless terminal to the terminal/base station And a downlink channel frame offset of the link, so that the terminal/base station determines an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal.
  • the apparatus provides a timing adjustment apparatus, including: a receiving unit, configured to receive a downlink channel frame offset of each wireless link of a terminal sent by a radio network controller; wherein, the terminal and each wireless An uplink TTI alignment of the terminal in the cell corresponding to the link; a determining unit, configured to determine, according to a downlink channel frame offset of each radio link of the terminal transmitted by the receiving unit, each radio link of the terminal Uplink timing.
  • a device for timing adjustment including: a receiver and a processing
  • the receiver is configured to receive a downlink channel frame offset of each radio link of the terminal sent by the radio network controller, where the terminal is in a cell in a cell corresponding to each radio link.
  • Uplink TTI alignment the processor is configured to determine an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal.
  • a thirteenth aspect a system for timing adjustment, comprising any of the timing adjustment devices provided by the fifth, sixth, eleventh, and twelfth aspects, and/or the seventh, eighth, ninth, and tenth aspects provided above Any of the wireless network controllers.
  • the method, device, and system for timing adjustment provided by the embodiments of the present invention can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing call drop rate and improving user experience.
  • the downlink channel frame offset is adjusted by hard handover to reach the uplink of the terminal in the changed serving cell.
  • One method is: receiving a first parameter sent by the radio network controller, and determining an uplink timing of the terminal according to the first parameter, where the first parameter includes: a downlink channel frame offset of the terminal and/or the terminal The uplink channel and the downlink channel frame timing are different.
  • the radio network controller determines a global uplink timing reference, and determines a downlink channel frame offset of each radio link of the terminal according to the global uplink timing reference, so that the terminal is in a cell corresponding to each radio link.
  • the terminal reaches the uplink TTI alignment, and transmits the determined downlink channel frame offset of each determined radio link to the terminal/base station, so that the terminal/base station determines the uplink according to the downlink channel frame offset of each radio link. Timing; This scheme can ensure that the uplink TTI of the terminal in the global cell is aligned, so that it can be aligned with the uplink TTI of the terminal in the changed serving cell.
  • FIG. 1 is a flowchart of a method for timing adjustment according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for timing adjustment according to an embodiment of the present invention
  • FIG. 4 is a flowchart of another method for timing adjustment according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of adjusting a DL DPCH frame offset of a terminal according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of another adjustment of a DL DPCH frame offset of a terminal according to an embodiment of the present disclosure
  • FIG. 7 is a flowchart of another method for timing adjustment according to an embodiment of the present invention
  • FIG. 8 is a flowchart of another method for timing adjustment according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of a method for timing adjustment according to an embodiment of the present invention
  • FIG. 1 is a schematic structural diagram of a device for timing adjustment according to an embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of another apparatus for timing adjustment according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a radio network controller according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of another radio network controller according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of another radio network controller according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of another radio network controller according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of another apparatus for timing adjustment according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of another apparatus for timing adjustment according to an embodiment of the present invention.
  • adjusting the uplink timing of the terminal by the method may align the terminal with the uplink TTI of other terminals in the changed serving cell.
  • the uplink TTI alignment refers to an integer multiple of the uplink timing difference TTI of each terminal in the same cell.
  • it can also be applied to scenes other than the scene of the service cell change.
  • the radio network controller may be a radio RNC (Radio Network Controller) in WCDMA, or may be a BSC (Base Station Controller) in a GSM or CDMA system.
  • the downlink channel (or downlink DPCH) may be DPCCH or F-DPCH; the downlink channel frame offset may be a downlink DPCCH channel frame offset or a downlink F-DPCH channel frame offset.
  • FIG. 1 is a flowchart of a method for timing adjustment according to an embodiment of the present invention, where the method includes:
  • the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal;
  • this embodiment can be used in a single carrier mechanism, and also in a multi-carrier mechanism.
  • the executive body of the solution may be a terminal or a base station.
  • the receiving, by the receiving, the first parameter sent by the radio network controller including but not limited to the following manners:
  • the message including the serving cell change information may be an active set update message.
  • ACTIVE SET UPDATE RADIO BEARER RECONFIGURATION, PHYSICAL CHANNEL RECONFIGURATION, TRANSPORT CHANNEL RECONFIGURATION, etc.
  • the message containing the wireless link addition information may be the active set update message.
  • ACTIVE SET UPDATE etc.
  • the message containing the radio link deletion information may be an active set update message ( ACTIVE SET UPDATE ) or the like.
  • the first parameter may also be obtained by using other messages including the first parameter, which is not limited by the embodiment of the present invention.
  • the first parameter includes but is not limited to the following situations:
  • the first parameter is the downlink channel frame offset of the terminal
  • the first parameter is the timing difference between the uplink channel and the downlink channel frame of the terminal;
  • the first parameter is the downlink channel frame offset and the uplink channel and downlink channel frame timing difference.
  • the downlink channel frame offset of the terminal is greater than the 256 chips of the downlink channel frame offset currently used by the terminal.
  • the adjustment amount of the downlink channel frame offset of the terminal may be greater than 256 chips compared to the downlink channel frame offset currently used by the terminal, and may be equal to 256.
  • a chip in general, the adjustment amount is an integer multiple of 256 chips, that is, the difference between the downlink channel frame offset of the terminal and the downlink channel frame offset currently used by the terminal may be It is an integer multiple of 256 chips, for example, it can be 256 chips, 256*2 chips, and the like.
  • the downlink channel frame offset of the terminal is not limited by the adjustment amount of the downlink channel frame offset currently used by the terminal.
  • the determining the timing of the uplink timing of the terminal according to the first parameter includes but is not limited to the following manners: ⁇ ', when adding a wireless link, determining an uplink timing of the terminal according to the first parameter;
  • the uplink timing of the terminal may be determined by any of the times described by A', ⁇ ', and C. .
  • the uplink timing of the terminal is adjusted by adjusting a downlink channel frame offset of the terminal.
  • the terminal is adjusted by adjusting an uplink channel and a downlink channel frame timing difference of the terminal.
  • the uplink timing of the terminal is adjusted by adjusting the downlink channel frame offset of the terminal and the uplink channel and downlink channel frame timing difference of the terminal.
  • the method for determining the uplink timing of the terminal includes, but is not limited to, the following manners:
  • the executive body is the terminal
  • the first parameter is the downlink channel frame offset of the terminal
  • determining a downlink DPCH/F-DPCH frame boundary of the terminal according to the downlink channel frame offset of the terminal, according to the The downlink DPCH/F-DPCH frame boundary of the terminal receives at least one path of the downlink DPCH/F-DPCH, and the TO chip that receives the first path of the downlink DPCH/F-DPCH is used as the uplink DPCCH frame boundary of the terminal.
  • the TO is a constant.
  • TO may be 1024 chips, but is not limited thereto.
  • the first parameter is the timing difference between the uplink channel and the downlink channel frame of the terminal
  • at least one path of the downlink DPCH/F-DPCH is received according to the downlink DPCH/F-DPCH frame boundary currently used by the terminal. , will receive the downlink DPCH/F-DPCH
  • the uplink channel and the downlink channel frame timing difference chip after the first path are used as the terminal uplink DPCCH frame boundary.
  • the first parameter is the downlink channel frame offset of the terminal and the uplink channel and the downlink channel frame timing difference of the terminal
  • the uplink channel and the downlink channel frame timing are separated by a chip as the terminal uplink DPCCH frame boundary.
  • n chips that are received after the first path of the downlink DPCH/F-DPCH are used as the boundary of the uplink DPCCH frame of the terminal, which may be embodied as follows: The first block of the downlink DPCH/F-DPCH is received. The n chips after the trail start to transmit the uplink DPCCH radio frame. Where n may be TO or the uplink channel and the downlink channel frame timing difference.
  • the execution subject is the base station
  • the first parameter is the downlink channel frame offset of the terminal
  • determining a downlink DPCH/F-DPCH frame boundary of the terminal according to the downlink channel frame offset of the terminal The TO chips of the downlink DPCH/F-DPCH frame boundary of the terminal are used as the uplink DPCCH frame boundary of the terminal, where the TO is constant.
  • TO may be 1024 chips, but is not limited thereto.
  • the first parameter is the uplink channel and the downlink channel frame timing difference of the terminal
  • determining the downlink DPCH/F-DPCH frame boundary of the terminal according to the currently used downlink channel frame offset of the terminal And using the uplink channel and the downlink channel frame timing difference chip of the frame boundary after the downlink DPCH/F-DPCH of the terminal as an uplink DPCCH frame boundary of the terminal.
  • the first parameter is the downlink channel frame offset of the terminal and the uplink channel and the downlink channel frame timing difference of the terminal
  • the chips are the uplink DPCCH frame boundaries of the terminal.
  • the n chips of the downlink DPCH/F-DPCH frame boundary of the terminal are the uplink DPCCH frame boundary of the terminal, which may be embodied as: downlink DPCH/F-DPCH from the terminal.
  • the n chips following the frame boundary start to receive the uplink DPCCH radio frame.
  • n may be TO or the uplink channel and the downlink channel frame timing difference.
  • the uplink timing of the terminal may be adjusted by:
  • Receiving the first parameter sent by the radio network controller comprising: receiving a first parameter that is sent by the radio network controller for the primary carrier;
  • the determining, according to the first parameter, the uplink timing of the terminal includes: determining, according to the first parameter of the primary carrier, an uplink timing of the terminal on the primary carrier.
  • the method may further include:
  • a second parameter for the secondary carrier includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel of the terminal Frame timing difference;
  • the meanings of the first parameter and the second parameter may be the same or different.
  • the first parameter and the second parameter may be the downlink channel frame offset, or the same.
  • the first parameter may be the downlink channel frame offset
  • the second parameter is the uplink channel and the downlink channel frame timing difference.
  • the value may be the same or different.
  • the first parameter for the primary carrier is A value
  • a second parameter for the secondary carrier is a second value
  • the first value and the second value may be the same or different.
  • the synchronization process refers to a process in which the detection signal quality satisfies a certain level. For example, in the following line synchronization process, when the terminal detects that the downlink DPCCH or F-DPCH signal quality is greater than a certain threshold within a certain period of time, it is considered that the uplink synchronization is reached.
  • the synchronization method is not limited in the embodiment of the present invention, and several alternative methods are provided below:
  • Method 1 Perform the synchronization process B.
  • the synchronization process B refers to the process in which the terminal detects that the downlink DPCCH or F-DPCH signal quality meets a certain level after the downlink physical channel is established for 160 ms when the wireless link is added to the active set. For details, refer to the prior art.
  • Synchronization process A refers to the process of detecting the downlink DPCCH or F-DPCH signal quality to meet a certain level in the first 160 ms before the initial establishment of the wireless link, as specifically seen in the prior art.
  • the target cell refers to the serving cell of the terminal after the terminal performs the change service cell action. In the following Embodiment 1-3, the target cell refers to the second cell.
  • Manner 4 After the first parameter is adjusted, a simplified synchronization process A is performed, that is, the uplink power is still used to adjust the power before the first parameter; and the frame synchronization and the slot synchronization are quickly performed according to the difference between the uplink timing and the downlink timing before and after the adjustment.
  • the method for timing adjustment provided by the embodiment of the present invention is controlled by receiving a wireless network
  • the first parameter sent by the device and determining the uplink timing of the terminal according to the first parameter, where the first parameter comprises: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal.
  • the scheme can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the call drop rate and improving the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • Embodiment 2 is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • FIG. 2 is a flowchart of another method for timing adjustment according to an embodiment of the present invention. This embodiment is described from the perspective of a radio network controller, and the method includes:
  • the radio network controller determines a first parameter, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal;
  • the radio network controller determines the first parameter, including:
  • the wireless network determines the first parameter according to a preset rule, where the preset rule is: after the terminal changes the serving cell, it is aligned with the uplink TTI of the terminal in the changed serving cell.
  • a terminal in a serving cell refers to a terminal that uses the cell as a serving cell.
  • the downlink channel frame offset of the terminal is greater than the 256 chips of the downlink channel frame offset currently used by the terminal.
  • the sending the first parameter to the terminal/base station includes:
  • the method is applied to a multi-carrier mechanism, where the multi-carrier mechanism includes a primary carrier and at least one secondary carrier;
  • Transmitting the first parameter to the terminal/base station, so that the terminal/base station determines the uplink timing of the terminal according to the first parameter including: sending, to the terminal/base station, a a parameter, such that the terminal/base station determines an uplink timing of the terminal on the primary carrier according to the first parameter for the primary carrier.
  • the method further includes:
  • Determining a second parameter for the secondary carrier includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal;
  • first embodiment corresponds to the second embodiment, and therefore the specific implementation manners of the two embodiments may be referred to each other. The same parts are not repeated.
  • the radio network controller determines and connects to the terminal/base station, so that the terminal/base station determines the uplink timing of the terminal according to the first parameter, where the first parameter includes: the downlink channel of the terminal The frame offset and/or the uplink channel and the downlink channel frame timing difference of the terminal, the downlink channel frame offset of the terminal is more than 256 chips compared to the downlink channel frame offset currently used by the terminal, and the terminal/base station This terminal or base station is included.
  • This solution can realize different in the same cell under soft handover.
  • the uplink TTI alignment between the terminals can reduce the call drop rate and improve the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink ⁇ alignment with the terminal in the changed serving cell, resulting in a high call drop rate, thereby making the user experience poor.
  • the application of the timing adjustment method provided in the first embodiment and the second embodiment will be described below by using three specific embodiments, and the scenario in which the serving cell is changed in the terminal is taken as an example for description.
  • the service area change process of the terminal may include:
  • the active set of the terminal is updated by one cell (first cell) into a plurality of cells (a first cell and a second cell). Specifically, when the terminal detects that the second cell satisfies the 1 a event (Event 1 a ), the terminal reports the signal quality of the second cell to the RNC; the RNC adds the second cell to the active set, and notifies the terminal/base station to perform the second cell. The action added to the active set.
  • the cell in the current active set is the first cell, and the first cell is the serving cell of the terminal.
  • the serving cell of the terminal is changed from the first cell to the second cell. Specifically, the terminal detects that the signal quality of the second cell meets the Id event (Event Id), and reports the signal quality of the second cell to the RNC; the RNC changes the serving cell of the terminal from the first cell to the second cell. And notifying the terminal/base station to perform an action of changing the serving cell of the terminal from the first cell to the second cell.
  • the cells in the current active set are the first cell and the second cell, and the second cell is the serving cell of the terminal.
  • Deleting a wireless link Delete the first cell in the active set of the terminal. Specifically, the terminal detects that the signal quality of the first cell meets the lb event (Event lb), and reports the signal quality of the first cell to the RNC; the RNC deletes the first cell from the active set, and notifies the terminal/base station to perform the first The action that the cell deletes from the active set.
  • the cell in the current active set is the second cell, and the second cell is the serving cell of the terminal.
  • the active set of the terminal refers to a set of one or more cells whose cell pilot channel signal quality satisfies certain conditions.
  • the uplink data of the terminal may be transmitted through all cells in the active set; the radio network controller may perform softer combining or soft combining from the data received by different cells in the active set to obtain a combining gain.
  • the base station can receive the power control command words of all cells in the active set to perform power control combining.
  • the cells in the active set may be cells under the same base station, or may be cells under different base stations.
  • the base station combines the received data sent by the multiple cells to obtain a combining gain; or, the radio network controller selectively combines the received data sent by the multiple base stations to obtain a selective combining gain.
  • the first cell is denoted as CELL 1 and the second cell denoted as CELL2.
  • Event A The primary CPICH enters the Reporting Range (FDD only), that is, the neighboring cell CPICH (Common Pilot Channel) signal quality enters the reporting range, and is used to trigger the addition of the neighboring cell to the active set;
  • FDD Reporting Range
  • CPICH Common Pilot Channel
  • Event l b A Primary CPICH leaves the Reporting Range (FDD only), that is, the neighboring cell CPICH signal quality leaves the reporting range, and is used to trigger the deletion of the neighboring cell from the active set;
  • Event I d Change of best cell (FDD only), which is the best monthly service cell change, used to trigger the change of the serving cell.
  • radio link addition process the serving cell change process, and the radio link deletion process described above are only exemplary descriptions, and the application of the method provided by the embodiment of the present invention is not limited to this scenario.
  • the RNC can adjust the downlink channel frame offset of the terminal when the radio link is added or the serving cell is changed or the radio link is deleted, and the adjusted downlink channel frame offset of the terminal is sent to the terminal.
  • the adjusted downlink channel frame offset can be effective when the radio link is added or the serving cell is changed or the radio link is deleted, that is, the terminal/base station is added in the radio link or the serving cell
  • the shift determines the uplink timing of the terminal.
  • Embodiment 1 - Embodiment 3 is to adjust the downlink channel frame offset of the terminal when the serving cell is changed, and the adjusted downlink channel frame offset is valid when the serving cell is changed, and the WCDMA system is used as an example.
  • the downlink channel is DL DPCH and the uplink channel is UL DPCCH as an example.
  • the wireless network controller is an RNC.
  • the serving cell in front of the terminal change serving cell is referred to as a first cell
  • the cell that meets the first preset range is referred to as a second cell
  • multiple cells may satisfy a preset range at the same time
  • Embodiment 1 - The third embodiment is described by taking a cell at a certain time to satisfy the first preset range as an example.
  • the uplink channel and the downlink channel frame timing difference are unchanged, and the method for adjusting the downlink channel frame offset is used to achieve the purpose of aligning the terminal after the serving cell with the uplink TTI of the other terminal in the changed serving cell.
  • This embodiment can be applied to a single carrier mechanism or a multi-carrier mechanism.
  • the method includes:
  • the terminal When detecting that the signal quality of the CPICH of the second cell meets the first preset range, the terminal reports, to the RNC, a first measurement report that includes a signal quality of the CPICH of the second cell; and the RNC joins the second cell according to the first measurement report. Go to the active set and send a message containing the radio link addition information to the terminal/base station; the terminal/base station adds the second cell to the active set according to the message including the radio link addition information.
  • the terminal can periodically or periodically detect the signal quality of the CPICH (Common Pilot Channel) of the cell adjacent to the serving cell.
  • CPICH Common Pilot Channel
  • the signal quality of the cell is reported to the RNC through the first measurement report.
  • the first measurement report may further include information such as the identifier of the cell.
  • the parameters characterizing the signal quality of the cell may be a common pilot channel signal to noise ratio (CPICH Ec/N0), a common pilot channel received signal code power (CPICH).
  • RSCP common pilot channel received signal code power
  • Pathloss path loss
  • RSCP refers to the Received Signal Code Power.
  • the first preset range may be a value or a range of values.
  • the specific value of the first preset range is not limited in this embodiment.
  • the signal quality of the CPICH of the second cell satisfies the first preset range, and the second cell may be considered to satisfy the l a event.
  • the terminal When the terminal detects that the signal quality of the CPICH of the second cell meets the second preset range, the terminal reports a second measurement report that includes the signal quality of the CPICH of the second cell to the RNC.
  • the RNC uses the second measurement report to determine the serving cell.
  • the cell is changed to the second cell, and the DL DPCH frame offset of the terminal is adjusted according to a preset rule.
  • the preset rule is: aligning the terminal with the uplink TTI of other terminals in the second cell;
  • the base station sends a message including the adjusted DL DPCH frame offset and the serving cell change information of the terminal; the terminal/base station changes the serving cell from the first cell to the second cell, and according to the adjusted terminal DL DPCH frame offset
  • the shift determines the uplink timing of the terminal.
  • the terminal/base station may perform the operation of changing the serving cell and determining the uplink timing of the terminal at the activation time specified by the RNC, or may receive the message including the adjusted DL DPCH frame offset and the serving cell change information of the terminal. , Perform the service cell change and determine the uplink timing of the terminal as early as possible.
  • the adjusted DL DPCH frame offset of the terminal may have multiple representations, for example, the adjusted DL DPCH frame offset of the terminal, the adjusted DL DPCH frame offset, and the DPCH currently used by the terminal.
  • the second preset range may be a value or a range of values.
  • the specific value of the second preset range is not limited in this embodiment.
  • the signal quality of the CPICH of the second cell satisfies the second preset range, and the second cell may be considered to satisfy the Id event.
  • the terminal/base station changes the serving cell from the first cell to the second cell, and determines the uplink timing of the terminal according to the adjusted DL DPCH frame offset of the terminal, including: 1.
  • the executive body is the terminal
  • the DPCH/F-DPCH frame boundary receives at least one path of the downlink DPCH/F-DPCH according to the downlink DPCH/F-DPCH frame boundary of the terminal, and receives the TO code after the first path of the downlink DPCH/F-DPCH
  • the slice is used as the uplink DPCCH frame boundary of the terminal, where TO is a constant.
  • the execution subject is the base station
  • the downlink DPCH/F-DPCH frame boundary of the terminal is determined according to the adjusted downlink frame offset, and the TO chips of the downlink DPCH/F-DPCH frame boundary of the terminal are used as the uplink DPCCH frame boundary of the terminal.
  • TO can be 1024chip, and in this embodiment, TO is 1024chip as an example.
  • the terminal When detecting that the signal quality of the CPICH of the first cell meets the third preset range, the terminal reports, to the RNC, a third measurement report that includes the signal quality of the CPICH of the first cell; and the RNC sends the first cell according to the third measurement report.
  • the centralized deletion is activated, and a message including radio link deletion information is sent to the terminal/base station; the terminal/base station deletes the first cell from the activation set according to the message including the radio link deletion information.
  • the third preset range may be a value or a range of values.
  • the specific value of the third preset range is not limited in this embodiment.
  • the signal quality of the CPICH of the second cell satisfies a third preset range, and the second cell can be considered to satisfy the lb event.
  • FIG. 5 a schematic diagram of adjusting the DL DPCH frame offset of the terminal according to a preset rule by an RNC in the scenario shown in FIG. 3, where each small box represents one symbol, and each symbol is 256 chips. Each 10 symbols form a time slot (slot), and every 3 time slots constitute one subframe.
  • the serving cell of the terminal UE 1 is changed from CELL 1 to CELL2, the terminal UE0 is a terminal in CELL2, and CELL2 is a serving cell of UE0.
  • BFN indicates the frame number of the base station to which the first cell and the second cell belong.
  • CELL1 P-CCPCH indicates the main common control physical channel of CELL1
  • CELL2 P-CCPCH indicates the main common control physical channel of CELL2.
  • Tcelll indicates the frame timing difference between CELL1 P-CCPCH and base station frame number BFN, which is 2 symbols (ie 512chip); Tcell2: indicates the frame timing difference between CELL2 P-CCPCH and base station frame number, which is 1 symbol ( Ie 256chip).
  • UE1 (CELL1) DL DPCH indicates the DL DPCH of UE1 in CELL1, including UE1 (CELL1) DL DPCH before serving cell change and UE1 (CELL1) DL DPCH after serving cell change.
  • UEK CELL1) UL DPCCH indicates the UL DPCCH of UE1 in CELL1, including UE1 (CELL1) UL DPCCH before serving cell change and UE1 (CELL1) UL DPCCH after serving cell change.
  • UE1 (CELL2) DL DPCH indicates the DL DPCH of UE1 in CELL2, which includes UE1 (CELL2) DL DPCH before serving cell change and UE1 (CELL2) DL DPCH after serving cell change.
  • UEK CELL2) UL DPCCH indicates the UL DPCCH of UE1 in CELL2, which includes UE1 (CELL2) UL DPCCH before the serving cell change and UE1 (CELL2) UL DPCCH after the service cell change.
  • UE0 (CELL2) DL DPCH Indicates the DL DPCH of UE0 in CELL2.
  • UE0 (CELL2) UL DPCCH indicates the UL DPCCH of UEO within CELL2.
  • the UE1 (CELL1) DL DPCCH before the serving cell change is different from the UE1 (CELL1) UL DPCCH frame boundary before the serving cell change by 4 symbols (ie, 1024 chips); the UE1 (CELL1) DL DPCH after the serving cell change
  • the UE1 (CELL1) UL DPCCH frame boundary after the change of the serving cell is different by 4 symbols (ie, 1024 chips).
  • UEO (CELL2) DL DPCH differs from UEO (CELL2) UL DPCCH by 4 symbols (ie 1024 chips). It should be noted that, in general, the DL DPCH and the UL DPCCH in the same cell of the same terminal are different by 1024 chips. 6) T DPCH : indicates the DL DPCH frame offset; where
  • the TDPCHI is the frame timing difference between the UE1 (CELL1) DL DPCH and the CELL1 P-CCPCH before the serving cell change, that is, the downlink channel frame offset of the UE1 in the serving cell CELL1 when the serving cell of the UE1 is the CELL1 non-serving cell is CELL2. , for 1 symbol (ie 256chip).
  • T DPC H2 is the frame timing difference between UE1 (CELL2) DL DPCH and CELL2 P-CCPCH before the serving cell change, that is, 2 symbols (ie, 256 chip*2).
  • T DPCH3 is the frame timing difference between the UE1 (CELL2) DL DPCH and the CELL2 P-CCPCH after the serving cell is changed, that is, the downlink channel frame offset of the UE1 in the serving cell CELL2 when the UE1 serving cell is the CELL2 non-serving cell is CELL1, It is 1 symbol (ie 256chip).
  • T DPC H4 is the frame timing difference between the UE1 (CELL1) DL DPCH and the CELL1 P-CCPCH after the serving cell is changed, that is, the downlink channel frame offset of the UE1 in the non-serving cell CELL1 when the UE1 serving cell is the CELL2 non-serving cell is CELL1.
  • the quantity is 0 symbols (ie Ochip).
  • the UE 1 (CELL2) DL DPCH before the serving cell change is different from the UE1 (CELL2) UL DPCCH before the serving cell change by 1024 chips, that is, the T DPCH2 is different from the T DPCH1 by 1024 chips; the UE1 (CELL2) DL DPCH after the serving cell is changed UE1 (CELL1) DL DPCH phase difference Offset after serving cell change, that is, T DPCH3 and T DPCH4 are out of offset, in this figure, Offset is -256chip.
  • TDPCHO is the P-CCPCH frame timing difference between UEO DL DPCH and CELL2 in CELL2, which is 1 symbol (ie 256chip).
  • the serving cell of UE 1 when the serving cell of UE 1 is changed from CELL 1 to CELL2, in order to make UE1 and UE0 in CELL2 reach the uplink TTI alignment, it is necessary to adjust the DL DPCH frame offset of UE1 in CELL1 after the serving cell is changed.
  • 0 chip that is, T DPC H4 is 0 chip, (the DL DPCH frame offset of UE1 in CELL1 is 256 chip before the serving cell change, that is, T DPCH1 is 256 chip); UE1 after the serving cell is changed
  • the DL DPCH frame offset in CELL2 is adjusted to 256 chips, that is, T DPCH3 is 256 chips.
  • the DL DPCH frame offset of UE 1 in CELL2 before the serving cell change is 256*2 chip, that is, T DPCH2 is 2566*2chip ).
  • the frame timing difference between the DL DPCH and the UL DPCCH does not change, and is fixed to 1024 chips.
  • the method for changing a serving cell determines the uplink timing of the terminal by adjusting the timing difference of the DL DPCH frame offset of the terminal, so that the terminal is aligned with the uplink TTI of other terminals in the changed serving cell. Under soft handover, after the change of the serving cell of the terminal, the uplink of other terminals in the changed serving cell is implemented.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed service area, resulting in a high call drop rate and a poor user experience.
  • the uplink TTI alignment of the terminal after changing the monthly service cell and other terminals in the changed serving cell is achieved by adjusting the timing difference between the UL DPCCH and the DL DPCH frame. the goal of.
  • This embodiment can be applied to a single carrier mechanism or a multi-carrier mechanism.
  • the "determining the uplink timing of the terminal according to the adjusted DL DPCH frame offset" in Embodiment 1 is replaced with "determining the uplink timing of the terminal according to the adjusted UL DPCCH and DL DPCH frame timing difference".
  • the terminal/base station determines the uplink timing of the terminal according to the adjusted UL DPCCH and the DL DPCH frame timing difference.
  • the adjusted UL DPCCH and DL DPCH frame timing difference of the terminal may have multiple representations, for example, the adjusted UL DPCCH and DL DPCH frame timing difference of the terminal may also be present.
  • Offset is a frame timing difference between the UL DPCCH and the DL DPCH of the terminal before the adjustment, and may generally be 1024 chips.
  • FIG. 6 a schematic diagram of adjusting the DL DPCH frame offset of the terminal according to a preset rule by another RNC in the scenario shown in FIG. 3, where each small box represents a symbol, and each symbol is 256. Chip, every 10 symbols form a slot, and every 3 slots form a subframe.
  • each parameter in Fig. 6 has the same meaning as the parameter described in 1) -7) in Fig. 5.
  • the difference is: UE1 (CELL1) DL DPCH after serving cell change is different from UE1 (CELL1) UL DPCCH frame boundary after serving cell change by 6 symbols (ie 256*6chip); T DPCH3 is 2 symbols (ie 256*) 2chip ); T DPCH4 is 1 symbol (ie 256chip); T DPCH0 is 4 symbols (ie 256*4chip).
  • the DL DPCH frame offset of the active centralized cell before and after the change of the UE1's monthly service cell does not change, that is, the DL DPCH frame offset of UE1 in CELL1 before and after the serving cell change is 256 chip (that is, Both T DPCH1 and T DPCH4 are 256 chips), and the DL DPCH frame offset of UE1 in CELL2 before and after the serving cell change is 256*2chip (that is, both T DPCH2 and T DPCH3 are 256*2chip).
  • UE1 needs to be adjusted to 1024chip +Offset.
  • the Offset in Figure 6 is 6 symbols (ie 256*6chip).
  • the method for changing a serving cell determines the uplink timing of the terminal by adjusting the UL DPCCH and the DL DPCH frame timing difference of the terminal, so that the terminal is aligned with the uplink TTI of other terminals in the changed serving cell.
  • Soft switching After the change of the serving cell of the terminal is implemented, the uplink TTI of the other terminal in the changed serving cell is aligned, thereby reducing the call drop rate and improving the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • This embodiment can be applied to a multi-carrier mechanism including one primary carrier and at least one secondary carrier.
  • the following description uses the multi-carrier mechanism including one primary carrier and one secondary carrier as an example.
  • On the primary carrier based on the uplink channel and the downlink channel frame timing difference, by adjusting the downlink channel frame offset, the terminal after changing the serving cell and the other terminals in the changed serving cell are on the primary carrier.
  • On the secondary carrier based on the DL DPCH frame offset, the terminal after changing the monthly service cell and the changed serving cell are obtained by adjusting the timing difference between the UL DPCCH and the DL DPCH frame.
  • the purpose of the uplink TTI alignment of other terminals within the secondary carrier is described in the secondary carrier.
  • the uplink timing on the primary carrier of the terminal and the uplink timing on the secondary carrier are separately adjusted.
  • the specific implementation process may be the integration of the first embodiment and the second embodiment, that is, the method for adjusting the uplink timing on the primary carrier may refer to the embodiment.
  • the method of adjusting the uplink timing on the secondary carrier refer to Embodiment 2. It should be noted that the process of adjusting the uplink timing on the primary carrier and the process of adjusting the uplink timing on the secondary carrier may be performed simultaneously or sequentially.
  • the method for changing a serving cell by adjusting the DL DPCH frame offset on the primary carrier of the terminal, so that the terminal is aligned with the uplink TTI of the other terminal in the changed serving cell on the primary carrier;
  • the timing difference between the UL DPCCH and the DL DPCH frame on the secondary carrier of the terminal is such that the terminal is aligned with the uplink TTI of the other terminal in the changed monthly service cell on the secondary carrier; under soft handover, the terminal service is implemented.
  • the uplink TTI of other terminals in the changed serving cell Alignment which reduces the dropped call rate and improves the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • FIG. 7 is a flowchart of another method for timing adjustment according to an embodiment of the present invention.
  • This embodiment is described from the perspective of a radio network controller, and may be applied to a single carrier mechanism or a multi-carrier mechanism.
  • the first embodiment and the second embodiment adjust the uplink timing of the terminal based on the pre-configured downlink channel frame offset of the terminal according to the method in the prior art. It is to adjust the downlink channel frame offset of the terminal in advance.
  • the method includes:
  • the radio network controller determines a global uplink timing reference
  • the global can also be called a full network, and can be a specific network system.
  • a positioning system can be installed on the base station and the radio network controller, for example, GPS (Global Positioning System, Global Positioning System, etc., so that the base station and the RNC have a common clock.
  • the terminal here can be all terminals in the entire network.
  • the downlink channel can be DL DPCCH or DL F-DPCH.
  • Step 702 may be: determining, according to the global uplink timing reference, a downlink channel frame offset in each cell of the terminal in the active set. Specifically, the uplink DPCCH boundary of the terminal is aligned with the global uplink timing reference, according to the uplink channel and The frame timing difference (TO) of the downlink channel acquires the downlink channel frame offset. Further, in the scenario in which the terminal changes the serving cell, it can be ensured that after the terminal changes the serving cell, and after the change Uplink TTI alignment of other terminals in the serving cell. Where TO is a constant and can be 1024chip.
  • the BFN frame boundaries of each base station may or may not be aligned; the frame timing difference (Tcell) of the P-CCPCH of each cell and the base station frame number may be the same or different; the RNC may be based on the BFN of the base station to which each cell belongs.
  • the frame boundary difference and the Tcell difference and the global uplink timing reference determine the DL DPCH frame offset for each cell in the terminal active set.
  • the downlink channel frame offset of each radio link of the terminal is sent to the terminal/base station, and the downlink channel frame offset may be configured for the terminal/base station according to the prior art radio network controller.
  • Method implementation For a specific implementation manner of the terminal/base station determining the uplink timing of the terminal according to the downlink channel frame offset of each of the wireless links, refer to Embodiment 4 below.
  • the radio network controller determines a global uplink timing reference, and determines a downlink channel frame offset of each radio link of the terminal according to the global uplink timing reference, so that the terminal and each wireless chain
  • the terminal in the cell corresponding to the path reaches the uplink TTI alignment, and transmits the determined downlink channel frame offset of each radio link of the determined terminal to the terminal/base station, so that the terminal/base station according to the downlink channel frame of each radio link
  • the offset determines the upstream timing.
  • the uplink timing of the terminal in the serving cell can be ensured to be aligned with the uplink TTI of the terminal in the changed serving cell.
  • the scheme can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the dropped call rate and improving the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • FIG. 8 is a flowchart of another method for timing adjustment according to an embodiment of the present invention.
  • the embodiment corresponds to the three-phase of the foregoing embodiment, and the method includes:
  • the terminal/base station receives the downlink channel frame offset of each radio link of the terminal sent by the radio network controller, where the terminal is aligned with the uplink TTI of the terminal in the cell corresponding to each radio link;
  • the method for determining, by the radio network controller, the downlink channel frame offset of each radio link of the terminal to the terminal/base station can be referred to the foregoing embodiment 3, and details are not described herein again.
  • the step 802 can include:
  • the terminal determines a downlink DPCH/F-DPCH frame boundary of the terminal according to the downlink channel frame offset, and receives at least one path of the downlink DPCH/F-DPCH according to the downlink DPCH/F-DPCH frame boundary of the terminal, and receives the at least one path of the downlink DPCH/F-DPCH
  • the TO chips after the first path of the downlink DPCH/F-DPCH start to transmit the uplink DPCCH radio frame.
  • the base station determines a downlink DPCH/F-DPCH frame boundary of the terminal according to the downlink channel frame offset, and receives at least one path of the downlink DPCH/F-DPCH according to the downlink DPCH/F-DPCH frame boundary of the terminal, and receives The TO chips after the first path of the downlink DPCH/F-DPCH start to receive the uplink DPCCH radio frame.
  • the terminal/base station receives the downlink channel frame offset of each radio link of the terminal sent by the radio network controller, where the terminal and the terminal in the cell corresponding to each radio link Uplink TTI alignment; and determining uplink timing based on the downlink channel frame offset of each radio link.
  • the uplink timing of the terminal in the serving cell can be ensured to be aligned with the uplink TTI of the terminal in the changed serving cell.
  • This program can The uplink TTI alignment between different terminals in the same cell is implemented under soft handover, thereby reducing the call drop rate and improving the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • the method provided in the above third embodiment and the fourth embodiment will be described below by a specific embodiment.
  • the method includes:
  • the radio network controller determines a global uplink timing reference
  • the radio network controller determines, according to the global uplink timing reference, a downlink channel frame offset of each radio link of the terminal, so that the terminal in the cell corresponding to each radio link reaches an uplink TTI alignment.
  • the radio network controller sends the downlink channel frame offset of each radio link of the terminal to the terminal/base station;
  • the terminal/base station determines an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal.
  • the cell in the terminal activation set includes CELL 1 and CELL2.
  • the base station frame number of the base station to which CELL 1 belongs is BFN 1
  • the base station frame number of the base station to which CELL 2 belongs is BFN2.
  • the start position of the BFN 1 frame boundary is different from the start position of the BFN2 frame boundary by 1 symbol
  • the start position of the CELL l P-CCPCH frame is different from the start position of the CELL2 P-CCPCH frame by 1 symbol
  • the uplink determination determined by the radio network controller The reference is the second time slot within a radio frame.
  • the DL DPCH frame offset of the terminal in CELL 1 needs to be set to 5 symbols;
  • the DL DPCH frame offset of the terminal in CELL2 it is necessary to set the DL DPCH frame offset of the terminal in CELL2 to 4 symbols. In this way, if the cell in the active set of one terminal is CELL 1 and CELL2, when the serving cell is changed from CELL 1 to CELL2, the DL DPCH frame offset does not need to be adjusted, and the terminal in the terminal and CELL2 can be guaranteed to reach the uplink TTI. Align.
  • the radio network controller determines a global uplink timing reference, and determines a downlink channel frame offset of each radio link of the terminal according to the global uplink timing reference, so that the terminal and each wireless chain
  • the terminal in the cell corresponding to the path reaches the uplink TTI alignment, and transmits the downlink channel frame offset of each radio link of the terminal to the terminal/base station; the terminal/base station determines the uplink according to the downlink channel frame offset of each radio link. timing.
  • the uplink timing of the terminal in the serving cell can be ensured to be aligned with the uplink TTI of the terminal in the changed serving cell.
  • FIG. 11 is a schematic structural diagram of a timing adjustment device 1 10 according to an embodiment of the present invention.
  • the device 10 is configured to perform the timing adjustment method shown in Embodiment 1.
  • the device 10 may be a base station or terminal.
  • the device 1 10 includes:
  • the receiving unit 1101 is configured to receive a first parameter sent by the radio network controller, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal;
  • a determining unit 1102 configured to determine an uplink timing of the terminal according to the first parameter transmitted by the receiving unit 1101;
  • the terminal The amount of downlink channel frame offset is greater than 256 chips compared to the downlink channel frame offset currently used by the terminal.
  • the receiving unit 1 101 is specifically configured to:
  • Radio network controller Receiving, by the radio network controller, a message that includes radio link addition information, where the message including the radio link addition information includes the first parameter;
  • the determining unit 1102 is specifically configured to:
  • the device 1 10 is the terminal, and the determining unit 1 102 is specifically configured to:
  • the first parameter is the downlink channel frame offset of the terminal, determining, according to the downlink channel frame offset of the terminal, a downlink DPCH/F-DPCH frame boundary of the terminal, according to the downlink of the terminal.
  • the DPCH/F-DPCH frame boundary receives at least one path of the downlink DPCH/F-DPCH, and the TO chip that receives the first path of the downlink DPCH/F-DPCH is used as the uplink DPCCH frame boundary of the terminal, where the TO is a constant;
  • the first parameter is the timing difference between the uplink channel and the downlink channel frame of the terminal
  • receiving at least one path of the downlink DPCH/F-DPCH according to the downlink DPCH/F-DPCH frame boundary currently used by the terminal Will receive the downlink DPCH/F-DPCH
  • the uplink channel and the downlink channel frame timing difference chip after a path are used as the uplink DPCCH frame boundary of the terminal;
  • the first parameter is a downlink channel frame offset of the terminal and an uplink channel and a downlink channel frame timing difference of the terminal, determining, according to the downlink channel frame offset of the terminal, the terminal
  • the downlink DPCH/F-DPCH frame boundary is received, and at least one path of the downlink DPCH/F-DPCH is received according to the downlink DPCH/F-DPCH frame boundary of the terminal, and the first path after the downlink DPCH/F-DPCH is received is received.
  • the uplink channel and the downlink channel frame timing difference chip are used as the terminal uplink DPCCH frame boundary.
  • the apparatus 1 10 is applied to a multi-carrier mechanism, where the multi-carrier mechanism includes a primary carrier and at least one secondary carrier;
  • the receiving unit 1101 is specifically configured to receive, by the radio network controller, a first parameter that is sent by the radio network controller for the primary carrier;
  • the determining unit 1102 is specifically configured to determine, according to the first parameter of the primary carrier, an uplink timing of the terminal on the primary carrier;
  • the receiving unit 1101 is further configured to receive a second parameter that is sent by the radio network controller for the secondary carrier, where the second parameter includes: a downlink channel frame offset of the terminal, and/or Or the uplink channel and the downlink channel frame timing of the terminal are different; the determining unit 1102 is further configured to determine, according to the second parameter of the secondary carrier, an uplink timing of the terminal on the secondary carrier. .
  • the device for adjusting the timing provided by the embodiment of the present invention receives the first parameter sent by the radio network controller, and determines the uplink timing of the terminal according to the first parameter, where the first parameter includes: the downlink channel frame offset of the terminal And/or the uplink channel and downlink channel frame timing difference of the terminal.
  • the scheme can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the call drop rate and improving the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • FIG. 12 is a schematic structural diagram of another timing adjustment apparatus 1 10 according to an embodiment of the present invention.
  • the apparatus 10 is configured to perform the timing adjustment method shown in Embodiment 1.
  • the apparatus 1 10 may be a base station or terminal.
  • the device 1 10 includes a receiver 1201 and a processor 1202, where
  • the receiver 1201 is configured to receive a first parameter sent by a radio network controller, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal;
  • the processor 1202 is configured to determine an uplink timing of the terminal according to the first parameter.
  • the downlink channel frame offset of the terminal is greater than the 256 chips of the downlink channel frame offset currently used by the terminal.
  • the receiver 1201 is specifically configured to:
  • Radio network controller Receiving, by the radio network controller, a message that includes radio link addition information, where the message including the radio link addition information includes the first parameter;
  • the processor 1202 is specifically configured to:
  • the device 1 10 is the terminal, where the processor 1202 is specifically configured to: according to the downlink channel frame offset of the terminal, according to the downlink channel frame of the terminal The offset determines the downlink DPCH/F-DPCH frame boundary of the terminal, and receives at least one path of the downlink DPCH/F-DPCH according to the downlink DPCH/F-DPCH frame boundary of the terminal, and receives the downlink DPCH/F-
  • the TO chips after the first path of the DPCH are used as the uplink DPCCH frame boundary of the terminal, where the TO is a constant;
  • the first parameter is the timing difference between the uplink channel and the downlink channel frame of the terminal, receiving at least one path of the downlink DPCH/F-DPCH according to the downlink DPCH/F-DPCH frame boundary currently used by the terminal, And receiving, by the first channel of the downlink DPCH/F-DPCH, the uplink channel and the downlink channel frame timing difference chip as the uplink DPCCH frame boundary of the terminal;
  • the first parameter is a downlink channel frame offset of the terminal and an uplink channel and a downlink channel frame timing difference of the terminal, determining, according to the downlink channel frame offset of the terminal, the terminal
  • the downlink DPCH/F-DPCH frame boundary is received, and at least one path of the downlink DPCH/F-DPCH is received according to the downlink DPCH/F-DPCH frame boundary of the terminal, and the first path after the downlink DPCH/F-DPCH is received is received.
  • the uplink channel and the downlink channel frame timing difference chip are used as the terminal uplink DPCCH frame boundary.
  • the apparatus 1 10 is applied to a multi-carrier mechanism, where the multi-carrier mechanism includes a primary carrier and at least one secondary carrier;
  • the receiver 1201 is specifically configured to receive, by the radio network controller, a first parameter that is sent to the primary carrier.
  • the processor 1202 is specifically configured to: determine, according to the first parameter of the primary carrier, an uplink timing of the terminal on the primary carrier;
  • the receiver 1201 is further configured to receive a second parameter that is sent by the radio network controller for the secondary carrier, where the second parameter includes: a downlink channel frame offset of the terminal, and/or The uplink channel of the terminal is delayed from the downlink channel frame timing;
  • the processor 1202 is further configured to determine, according to the second parameter of the secondary carrier, an uplink timing of the terminal on the secondary carrier.
  • the device for adjusting the timing provided by the embodiment of the present invention receives the first parameter sent by the radio network controller, and determines the uplink timing of the terminal according to the first parameter, where the first parameter includes: the downlink channel frame offset of the terminal And/or the uplink channel and downlink channel frame timing difference of the terminal.
  • the scheme can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the dropped call rate and improving the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate, thereby making the user experience poor.
  • FIG. 13 is a schematic structural diagram of a radio network controller 130 according to an embodiment of the present invention.
  • the radio network controller 130 is configured to perform the method for timing adjustment shown in the second embodiment.
  • the radio network controller 130 includes:
  • the determining unit 1301 is configured to determine a first parameter, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal;
  • the sending unit 1302 is configured to send, to the terminal/base station, the first parameter that is sent by the determining unit 1301, so that the terminal/base station determines an uplink timing of the terminal according to the first parameter;
  • the downlink channel frame offset of the terminal is greater than the 256 codes of the downlink channel frame offset currently used by the terminal. sheet.
  • the sending unit 1302 is specifically configured to:
  • the determining unit 1301 is specifically configured to: determine, according to a preset rule, a first parameter, where the preset rule is: after the terminal changes the serving cell, and the terminal in the changed serving cell Upstream TTI alignment.
  • the radio network controller 130 is applied to a multi-carrier mechanism, where the multi-carrier mechanism includes a primary carrier and at least one secondary carrier;
  • the determining unit 1301 is specifically configured to determine a first parameter for the primary carrier, where the sending unit 1302 is configured to send, to the terminal/base station, a first parameter for the primary carrier, so that the Determining, by the terminal/base station, an uplink timing of the terminal on the primary carrier according to the first parameter for the primary carrier;
  • the determining unit 1301 is further configured to: determine a second parameter for the secondary carrier, where the second parameter includes: a downlink channel frame offset of the terminal, and/or an uplink channel and a downlink of the terminal. Channel frame timing difference;
  • the sending unit 1302 is further configured to send the second parameter for the secondary carrier to the terminal/base station, so that the terminal/base station determines the according to the second parameter for the secondary carrier.
  • the uplink timing of the terminal on the secondary carrier is further configured to send the second parameter for the secondary carrier to the terminal/base station, so that the terminal/base station determines the according to the second parameter for the secondary carrier.
  • the radio network controller of the timing adjustment determines, by the terminal/base station, the terminal/base station to determine the uplink timing of the terminal according to the first parameter, where the first parameter includes: the downlink channel frame of the terminal The offset and/or the uplink channel and the downlink channel frame timing difference of the terminal, and the adjustment of the downlink channel frame offset of the terminal is greater than 256 chips compared to the downlink channel frame offset currently used by the terminal, and the terminal/base station includes The terminal or base station.
  • the scheme can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the call drop rate and improving the user experience.
  • FIG. 14 is a schematic structural diagram of another radio network controller 130 according to an embodiment of the present invention.
  • the radio network controller 130 is configured to perform the method for timing adjustment shown in Embodiment 2.
  • the radio network controller 130 includes : a processor 1401 and a transmitter 1402, wherein
  • the processor 1401 is configured to determine a first parameter, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal;
  • the transmitter 1402 is configured to send the first parameter to the terminal/base station, so that the terminal/base station determines an uplink timing of the terminal according to the first parameter; where, in the wireless network control In the case where the device 130 is applied to the single carrier mechanism, the amount of adjustment of the downlink channel frame offset of the terminal is greater than 256 chips compared to the downlink channel frame offset currently used by the terminal.
  • the transmitter 1402 is specifically configured to:
  • the processor 1401 is specifically configured to: determine, according to a preset rule, a first parameter, where the preset rule is: after the terminal changes the serving cell, and the terminal in the changed serving cell Upstream TTI alignment.
  • the radio network controller 130 is applied to a multi-carrier mechanism, where the multi-carrier mechanism includes a primary carrier and at least one secondary carrier;
  • the processor 1401 is specifically configured to determine a first parameter for the primary carrier;
  • the transmitter 1402 is specifically configured to: send, to the terminal/base station, a first parameter for the primary carrier, so that the terminal/base station determines, according to the first parameter that is configured for the primary carrier, that the terminal is Uplink timing on the primary carrier;
  • the processor 1401 is further configured to: determine a second parameter for the secondary carrier, where the second parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink of the terminal Channel frame timing difference;
  • the transmitter 1402 is further configured to send the second parameter for the secondary carrier to the terminal/base station, so that the terminal/base station determines the according to the second parameter for the secondary carrier.
  • the uplink timing of the terminal on the secondary carrier is further configured to send the second parameter for the secondary carrier to the terminal/base station, so that the terminal/base station determines the according to the second parameter for the secondary carrier.
  • the radio network controller of the timing adjustment determines, by the terminal/base station, the terminal/base station to determine the uplink timing of the terminal according to the first parameter, where the first parameter includes: the downlink channel frame of the terminal The offset and/or the uplink channel and the downlink channel frame timing difference of the terminal, and the adjustment of the downlink channel frame offset of the terminal is greater than 256 chips compared to the downlink channel frame offset currently used by the terminal, and the terminal/base station includes The terminal or base station.
  • the scheme can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the call drop rate and improving the user experience.
  • FIG. 15 is a schematic structural diagram of another radio network controller 150 according to an embodiment of the present invention.
  • the radio network controller 150 is configured to perform the method for timing adjustment shown in Embodiment 3.
  • the radio network controller 150 includes :
  • a first determining unit 1501 configured to determine a global uplink timing reference
  • a second determining unit 1502 configured to determine, according to the global uplink timing reference determined by the first determining unit 1501, a downlink channel frame offset of each radio link of the terminal, so that the terminal and the each wireless The terminal in the cell corresponding to the link reaches the uplink. TTI alignment;
  • the sending unit 1503 is configured to send, to the terminal/base station, a downlink channel frame offset of each radio link determined by the second determining unit 1502, so that the terminal/base station according to the terminal.
  • the downlink channel frame offset of the strip radio link determines the uplink timing of each radio link of the terminal.
  • the radio network controller provided by the embodiment of the present invention determines the global uplink timing reference, and determines the downlink channel frame offset of each radio link of the terminal according to the global uplink timing reference, so that the terminal corresponds to each radio link.
  • the terminal in the cell reaches the uplink ⁇ alignment, and transmits the determined downlink channel frame offset of each determined radio link to the terminal/base station, so that the terminal/base station determines according to the downlink channel frame offset of each radio link. Uplink timing.
  • the radio network controller can guarantee the uplink of the terminal in the whole
  • FIG. 16 is a schematic structural diagram of another radio network controller 150 according to an embodiment of the present invention.
  • the radio network controller 150 is configured to perform the method for timing adjustment shown in Embodiment 3.
  • the radio network controller 150 includes : a processor 1601 and a transmitter 1602, wherein
  • the processor 1602 is configured to determine a global uplink timing reference, and determine, according to the global uplink timing reference, a downlink channel frame offset of each wireless link of the terminal, so that the terminal and each of the wireless links The terminal in the corresponding cell reaches the uplink alignment;
  • a transmitter 1602 configured to send, to the terminal/base station, each radio link of the terminal
  • the downlink channel frame offset is such that the terminal/base station determines an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal.
  • the radio network controller provided by the embodiment of the present invention determines the global uplink timing reference, and determines the downlink channel frame offset of each radio link of the terminal according to the global uplink timing reference, so that the terminal corresponds to each radio link.
  • the terminal in the cell reaches the uplink
  • the TTI is aligned, and the downlink channel frame offset of each determined radio link of the determined terminal is transmitted to the terminal/base station, so that the terminal/base station determines the uplink timing according to the downlink channel frame offset of each radio link.
  • the radio network controller can guarantee the uplink of the terminal in the whole
  • FIG. 17 is a schematic structural diagram of a timing adjustment apparatus 170 according to an embodiment of the present invention.
  • the apparatus 170 is configured to perform the timing adjustment method shown in Embodiment 1.
  • the apparatus 170 may be a base station or a terminal.
  • the device 170 includes:
  • the receiving unit 1701 is configured to receive, by the radio network controller, a downlink channel frame offset of each radio link of the terminal, where the terminal is aligned with an uplink TTI of the terminal in the cell corresponding to each radio link;
  • the determining unit 1702 is configured to determine an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal transmitted by the receiving unit 1701.
  • the apparatus for timing adjustment receives the downlink channel frame offset of each radio link of the terminal sent by the radio network controller, where the terminal and the terminal in the cell corresponding to each radio link uplink TTI alignment; and according to each The downlink channel frame offset of the line link determines the uplink timing.
  • the device can ensure the uplink TTI alignment of the terminal in the global, so that it can be aligned with the uplink TTI of the terminal in the changed serving cell.
  • the device can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the call drop rate and improving the user experience.
  • FIG. 18 is a schematic structural diagram of another timing adjustment apparatus 170 according to an embodiment of the present invention.
  • the apparatus 170 is configured to perform the timing adjustment method shown in Embodiment 1.
  • the apparatus 170 may be a base station or a terminal.
  • the device 170 includes a receiver 1701 and a processor 1702, where
  • the receiver 1701 is configured to receive a downlink channel frame offset of each radio link of the terminal sent by the radio network controller, where the terminal is aligned with an uplink TTI of the terminal in the cell corresponding to each radio link. ;
  • the processor 1702 is configured to determine an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal.
  • the apparatus for timing adjustment receives the downlink channel frame offset of each radio link of the terminal sent by the radio network controller, where the terminal and the terminal in the cell corresponding to each radio link uplink TTI alignment; and determining uplink timing based on the downlink channel frame offset of each radio link.
  • the device can ensure the uplink TTI alignment of the terminal in the global, so that it can be aligned with the uplink TTI of the terminal in the changed serving cell.
  • the device can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the call drop rate and improving the user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • the embodiment of the present invention further provides a timing adjustment system, including any of the timing adjustment devices 1 10, 170 provided above, and/or any of the wireless network controllers 130, 150 provided above, wherein
  • the timing adjustment device 1 10 is configured to receive a first parameter sent by the radio network controller, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal. Determining, according to the first parameter, an uplink timing of the terminal, where, in a case where the timing adjustment device 1 10 is applied to a single carrier mechanism, the downlink channel frame offset of the terminal is compared to the terminal The amount of adjustment of the downlink channel frame offset currently used is greater than 256 chips.
  • the radio network controller 130 is configured to determine a first parameter, where the first parameter includes: a downlink channel frame offset of the terminal and/or an uplink channel and a downlink channel frame timing difference of the terminal; to the terminal/base station Transmitting the first parameter, so that the terminal/base station determines an uplink timing of the terminal according to the first parameter; where, in a case where the radio network controller 130 is applied to a single carrier mechanism, the terminal
  • the amount of downlink channel frame offset is greater than 256 chips compared to the downlink channel frame offset currently used by the terminal.
  • a radio network controller 150 configured to determine a global uplink timing reference, and determine, according to the global uplink timing reference, a downlink channel frame offset of each radio link, so that the terminal corresponds to each radio link
  • the terminal in the cell reaches the uplink TTI alignment; the downlink channel frame offset of each radio link of the terminal is sent to the terminal/base station, so that the terminal/base station according to each radio link of the terminal
  • the downlink channel frame offset determines an uplink timing of each radio link of the terminal.
  • the timing adjustment device 170 is configured to receive, by the radio network controller, a downlink channel frame offset of each radio link of the terminal, where the terminal and the terminal in each cell corresponding to each radio link uplink TTI alignment; determining an uplink timing of each radio link of the terminal according to a downlink channel frame offset of each radio link of the terminal.
  • the timing adjustment system provided by the embodiment of the present invention can implement uplink TTI alignment between different terminals in the same cell under soft handover, thereby reducing the call drop rate and improving High user experience.
  • the downlink channel frame offset is adjusted by hard handover to achieve uplink TTI alignment with the terminal in the changed serving cell, resulting in a high call drop rate and a poor user experience.
  • the wireless network controller including the wireless network controller
  • the system of the device 170 or the timing adjustment device 170 can ensure the uplink TTI alignment of the terminal in the global manner, so as to ensure that it is aligned with the uplink TTI of the terminal in the changed serving cell.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • 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 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.
  • each functional unit in each embodiment of the present invention 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 if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a 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 of the various embodiments of the present invention.
  • 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

Selon ses modes de réalisation, la présente invention concerne un procédé, un dispositif et un système de réglage de synchronisation. Elle s'applique au domaine des communications, et elle permet de réduire le taux d'interruption des appels afin d'améliorer l'expérience utilisateur. Ledit procédé comprend : la réception d'un premier paramètre envoyé par un contrôleur de réseau radio, ce premier paramètre comportant un décalage de trames de canal de liaison descendante d'un terminal et/ou une différence de synchronisation de trames entre un canal de liaison montante et un canal de liaison descendante de ce terminal ; et la détermination de la synchronisation de liaison montante du terminal en fonction du premier paramètre. Si le procédé est appliqué à un mécanisme à porteuse unique, l'ampleur du réglage du décalage de trames de canal de liaison descendante du terminal est de plus de 256 bribes par rapport au décalage de trames de canal de liaison descendante en cours relatif à ce même terminal. Les modes de réalisation de cette invention servent à effectuer un alignement de l'intervalle de temps de transmission (TTI) de liaison montante entre différents terminaux dans la même cellule au cours d'un transfert intercellulaire sans coupure.
PCT/CN2013/080564 2013-07-31 2013-07-31 Procédé, dispositif et système de réglage de synchronisation WO2015013934A1 (fr)

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PCT/CN2013/080564 WO2015013934A1 (fr) 2013-07-31 2013-07-31 Procédé, dispositif et système de réglage de synchronisation
CN201380000886.3A CN104641712B (zh) 2013-07-31 2013-07-31 一种定时调整的方法、装置和系统

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EP3445100A4 (fr) * 2016-05-03 2019-04-17 Huawei Technologies Co., Ltd. Procédé, dispositif et système de transmission de signal
CN111988774A (zh) * 2019-05-24 2020-11-24 阿里巴巴集团控股有限公司 一种通信网络中信标帧的通信方法和装置

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