WO2017012291A1 - Procédé et appareil de gestion de transfert intercellulaire avec coupure, et support d'informations - Google Patents

Procédé et appareil de gestion de transfert intercellulaire avec coupure, et support d'informations Download PDF

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Publication number
WO2017012291A1
WO2017012291A1 PCT/CN2016/070088 CN2016070088W WO2017012291A1 WO 2017012291 A1 WO2017012291 A1 WO 2017012291A1 CN 2016070088 W CN2016070088 W CN 2016070088W WO 2017012291 A1 WO2017012291 A1 WO 2017012291A1
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WO
WIPO (PCT)
Prior art keywords
handover
request message
hard
target cell
handover request
Prior art date
Application number
PCT/CN2016/070088
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English (en)
Chinese (zh)
Inventor
陈子福
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017012291A1 publication Critical patent/WO2017012291A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the present invention relates to a hard handover technique, and in particular, to a hard handover method and apparatus, and a storage medium.
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • the terminal After receiving the handover request message, the terminal needs to perform a random access again in the target cell, and can only switch to the target cell normally after obtaining the synchronization; however, the hard handover mode has the following Disadvantages, as the size of the user increases, the probability of collision caused by random access also increases, which may lead to random access failure, or successful after multiple random access, but the handover delay is large and affects perception;
  • the other is the relay switching mode.
  • the terminal After receiving the handover request message, the terminal does not need to perform random access in the target cell, but directly calculates the synchronization adjustment of the target cell by using the SFN-SFN OTD (delay difference) measurement.
  • the target cell is successfully accessed; however, the handover mode requires a high delay for the source cell and the target cell to be handed over. If the delay exceeds the standard, the handover fails easily.
  • the embodiment of the invention provides a method and a device for hard handover, and a storage medium, which can randomly access a target cell by using a dedicated signature, avoid collision with an ordinary signature, thereby improving the efficiency and success probability of the hard handover, and reducing the handover failure.
  • the dropped call is a method and a device for hard handover, and a storage medium, which can randomly access a target cell by using a dedicated signature, avoid collision with an ordinary signature, thereby improving the efficiency and success probability of the hard handover, and reducing the handover failure.
  • the dropped call is a method and a device for hard handover, and a storage medium, which can randomly access a target cell by using a dedicated signature, avoid collision with an ordinary signature, thereby improving the efficiency and success probability of the hard handover, and reducing the handover failure.
  • the invention provides a method for hard switching, comprising:
  • the dedicated cell is used to access the target cell to complete handover from the source cell to the target cell.
  • the method for hard handover further includes:
  • the target cell is randomly accessed using a normal signature.
  • the step of determining whether the handover request message includes the extended information specifying a dedicated signature further includes:
  • the handover mode is a hard handover.
  • the handover request message is a radio bearer reconfiguration message, a physical channel reconfiguration message, or a transport channel reconfiguration message.
  • the invention also provides a device for hard switching, comprising:
  • a receiving module configured to receive a handover request message sent by the source cell
  • a determining module configured to determine whether the switching request message includes extended information specifying a dedicated signature
  • the first access module is configured to access the target cell by using the dedicated signature to complete the handover from the source cell to the target cell, if the determination result is yes.
  • the device for hard switching further includes:
  • the second access module is configured to randomly access the target cell by using a normal signature if the handover request message does not include the extension information specifying a dedicated signature.
  • the device for hard switching further includes:
  • the determining module is configured to determine, according to the handover request message, that the handover mode is a hard handover.
  • the handover request message is a radio bearer reconfiguration message, a physical channel reconfiguration message, or a transport channel reconfiguration message.
  • a storage medium having stored therein a computer program configured to perform the method of hard switching.
  • the hard handover method of the present invention receives the handover request message sent by the source cell, and determines whether the handover request message includes extension information specifying a dedicated signature. If the determination result is yes, the dedicated signature is used. Accessing the target cell to complete the handover from the source cell to the target cell can avoid collision with an ordinary signature, thereby improving the efficiency and success probability of hard handover, and reducing dropped calls caused by handover failure.
  • FIG. 1 is a flow chart showing a method of hard handoff according to an embodiment of the present invention.
  • FIG. 2 shows a flow chart of the RNC selecting the hard handover mode of the UE.
  • FIG. 3 is a flow chart showing a method of hard handoff in accordance with an embodiment of the present invention.
  • Figure 4 shows a detailed flow chart for completing a hard handoff using the present invention.
  • FIG. 5 is a block diagram showing the structure of a device for hard switching according to an embodiment of the present invention.
  • an embodiment of the present invention provides a hard handover method, which is applied to a user equipment UE.
  • the method for hard handover according to the embodiment of the present invention includes the following steps:
  • S101 Receive a handover request message sent by the source cell.
  • S102 Determine whether the handover request message includes extension information that specifies a dedicated signature.
  • the hard handover method of the embodiment of the present invention by receiving a handover request message sent by the source cell, and determining whether the handover request message includes extension information specifying a dedicated signature, and if the determination result is yes, using the The dedicated signature accesses the target cell to complete the handover from the source cell to the target cell, which can avoid collision with the common signature, thereby improving the efficiency and success probability of the hard handover, and reducing the dropped call caused by the handover failure. .
  • the radio network controller RNC obtains the configuration of the UE, and determines whether the UE supports random access to the target cell by using a dedicated signature.
  • a dedicated signature For example, in the 3GPP 25.331 protocol, in the message body UE CAPABILITY INFORMATION and the RRC CONNECTION SETUP COMPLETE, an extension field Capacity for HO_NCR is added in the UE radio access capability IE, and a Boolean type is used, which is equal to false. Not supported, but equal to ture stands for support.
  • the extended information field is not carried in the UE information obtained by the RNC, the UE is considered not to support accessing the target cell by using a dedicated signature.
  • the RNC When the UE does not support, if the UE reports a measurement report of a handover event (indicating that a handover from a source cell to a target cell is required), the RNC initiates a traditional hard handover mode, that is, the UE needs to pass a normal signature randomly. Access to the target cell.
  • the RNC When the UE supports the measurement report of the handover event, the RNC considers that the UE accesses the target cell by using a dedicated signature according to the interference situation of the current signature. Specifically, the RNC calculates the number of UEs that may initiate handover at the same time, and determines whether the UE is to be accessed to the target cell by using a dedicated signature.
  • the RNC when only the UE is initiating the handover at the time, the RNC allows the UE to access the target cell through a dedicated signature; if multiple UEs initiate handover at the same time, but supports the UE that accesses the target cell through the dedicated signature only When the UE does not support other UEs, the RNC may allow the UE to access the target cell through a dedicated signature; if multiple UEs initiate handover at the same time, but the UE that supports the target cell through the dedicated signature, in addition to the UE When there are other UEs, the RNC will select one of them. Or some supported UEs access the target cell through a dedicated signature, while for other UEs, the RNC initiates a traditional hard handover mode. It should be noted that, in an actual application, the number of UEs that can simultaneously initiate access to the target cell by using a dedicated signature is less than or equal to the configured number of dedicated signatures for handover.
  • the RNC After the UE successfully accesses the source cell, the RNC acquires configuration information of the UE.
  • S202 Determine whether the UE supports accessing the target cell by using a dedicated signature, that is, determining whether Capacity for HO_NCR is equal to true;
  • S205 Determine, according to the interference situation of the current signature, whether the UE is to access the target cell by using a dedicated signature.
  • the handover request message sent by the source cell is sent by the RNC to the UE.
  • the handover request message may be a radio bearer reconfiguration message (Radio Bearer Reconfiguration), a physical channel reconfiguration message (Physical Channel Reconfiguration), or a transport channel reconfiguration message (Transport Channel Reconfiguration), which is determined according to actual conditions, and the present invention does not Limited.
  • an uplink synchronization code is used, for example, an extension field (ie, extended information) SYNC_UL code for HO_NCR is added to the handover request message body, and the extension field is used.
  • the UE is informed of its designated dedicated signature such that the UE completes the handover from the source cell to the target cell using the dedicated signature.
  • the modification mainly involves the modification of the 3GPP 25.331 protocol, for example, an extension field Uplink DPCH info is added, and the extension is performed.
  • the extension field is mainly used to extend the original Uplink DPCH info field in the Radio Bearer Reconfiguration, Physical Channel Reconfiguration, or Transport Channel Reconfiguration message involved in the handover process.
  • extension field is merely an example and does not limit the present invention.
  • the extension field name is Uplink DPCH info Va20.
  • the method for hard handover further includes:
  • the target cell is randomly accessed by using a normal signature to ensure handover from the source cell to the target cell.
  • the step of determining whether the handover request message includes the extended information specifying a dedicated signature further includes:
  • the handover mode is a hard handover.
  • the determining manner is, for example, in the handover request message, confirming whether the synchronization parameter information is included, and if so, determining that it is a hard handover mode.
  • a flowchart of a method for hard handover includes the following steps:
  • S301 The UE reports a test report of the handover event.
  • the RNC determines, according to the interference situation of the current signature, whether the UE is to access the target cell by using a dedicated signature.
  • the RNC sends a handover request message to the UE by using the source cell.
  • S305 Determine whether there is an extension field SYNC_UL code for HO_NCR;
  • the process of completing the hard handover is as shown in FIG. 4, and includes the following steps:
  • the source cell sends a Physical Channel Reconfiguration to the UE.
  • S403 The UE uses the eighth signature to randomly access the target cell.
  • S404 The UE feeds back a Physical Channel Reconfiguration Complete message to the source cell.
  • the target cell is randomly accessed by using a dedicated signature, which avoids collision with the normal signature, so that the UE randomly accesses the target cell more robustly and has a higher success rate.
  • an embodiment of the present invention further provides a device for hard handover, which corresponds to the method for hard handover shown in FIG. 1.
  • the device for hard handover includes:
  • the receiving module 51 is configured to receive a handover request message sent by the source cell.
  • the determining module 52 is configured to determine whether the switching request message includes extended information specifying a dedicated signature
  • the first access module 53 is configured to access the target cell by using the dedicated signature to complete the handover from the source cell to the target cell, if the determination result is yes.
  • the handover request message may be a radio bearer reconfiguration message (Radio Bearer Reconfiguration), a physical channel reconfiguration message (Physical Channel Reconfiguration), or a transport channel reconfiguration message (Transport Channel Reconfiguration), which is determined according to actual conditions, and the present invention is not correct. It is limited.
  • Radio Bearer Reconfiguration Radio Bearer Reconfiguration
  • Physical Channel Reconfiguration Physical Channel Reconfiguration
  • Transport Channel Reconfiguration Transport Channel Reconfiguration
  • the apparatus for hard handover further includes:
  • the second access module is configured to randomly access the target cell by using a normal signature if the handover request message does not include the extension information specifying a dedicated signature.
  • the device for hard switching further includes:
  • the determining module is configured to determine, according to the handover request message, that the handover mode is a hard handover.
  • Embodiments of the present invention also describe a storage medium in which a computer program is stored, the computer program being configured to perform the method of hard handover of the foregoing embodiments.
  • the invention receives the handover request message sent by the source cell, and determines whether the handover request message includes extension information specifying a dedicated signature, and if the determination result is yes, accessing the target cell by using the dedicated signature.
  • collision with the ordinary signature can be avoided, thereby improving the efficiency and success probability of the hard handover, and reducing the dropped call caused by the handover failure.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil de transfert intercellulaire avec coupure, et un support d'informations. Le procédé de transfert intercellulaire avec coupure comprend les étapes consistant : à recevoir un message de demande de transfert intercellulaire envoyé par une cellule source (S101) ; à déterminer si le message de demande de transfert intercellulaire comprend des informations d'extension d'une signature dédiée (S102) ; et dans le cas où le résultat de la détermination est oui, à accéder à une cellule de destination en utilisant la signature dédiée, de manière à mettre en œuvre un transfert intercellulaire de la cellule source vers la cellule de destination (S103). Au moyen de la solution de la présente invention, une cellule de destination peut être accédée de manière aléatoire en utilisant une signature dédiée, et une collision avec une signature commune peut être évitée, ce qui permet d'améliorer l'efficacité et la probabilité de réussite de transferts intercellulaires avec coupure, et de réduire des pertes de communication générées suite à des défaillances de transfert intercellulaire.
PCT/CN2016/070088 2015-07-22 2016-01-04 Procédé et appareil de gestion de transfert intercellulaire avec coupure, et support d'informations WO2017012291A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510433891.4A CN106358250A (zh) 2015-07-22 2015-07-22 一种硬切换的方法及装置
CN201510433891.4 2015-07-22

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WO2017012291A1 true WO2017012291A1 (fr) 2017-01-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017049361A (ja) * 2015-08-31 2017-03-09 日東電工株式会社 光学補償層付偏光板およびそれを用いた有機ｅｌパネル

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Publication number Priority date Publication date Assignee Title
CN101212791A (zh) * 2006-12-26 2008-07-02 大唐移动通信设备有限公司 一种用户设备接入网络设备的方法和系统
CN101247647A (zh) * 2007-02-15 2008-08-20 中兴通讯股份有限公司 一种增强上行链路实现快速切换的方法
CN101932052A (zh) * 2009-06-23 2010-12-29 华为技术有限公司 一种切换方法、用户终端及网络侧设备
WO2013074457A1 (fr) * 2011-11-15 2013-05-23 Kyocera Corporation Gestion de transferts intercellulaires à l'aide d'un canal de diffusion dans un réseau comprenant des stations de base synchronisées
US20140355507A1 (en) * 2013-05-28 2014-12-04 Qualcomm Incorporated Adjusting priority of mbms and femto cells

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101212791A (zh) * 2006-12-26 2008-07-02 大唐移动通信设备有限公司 一种用户设备接入网络设备的方法和系统
CN101247647A (zh) * 2007-02-15 2008-08-20 中兴通讯股份有限公司 一种增强上行链路实现快速切换的方法
CN101932052A (zh) * 2009-06-23 2010-12-29 华为技术有限公司 一种切换方法、用户终端及网络侧设备
WO2013074457A1 (fr) * 2011-11-15 2013-05-23 Kyocera Corporation Gestion de transferts intercellulaires à l'aide d'un canal de diffusion dans un réseau comprenant des stations de base synchronisées
US20140355507A1 (en) * 2013-05-28 2014-12-04 Qualcomm Incorporated Adjusting priority of mbms and femto cells

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017049361A (ja) * 2015-08-31 2017-03-09 日東電工株式会社 光学補償層付偏光板およびそれを用いた有機ｅｌパネル
US10816708B2 (en) 2015-08-31 2020-10-27 Nitto Denko Corporation Polarizing plate having optical compensation layer, and organic EL panel using same

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