WO2009012678A1 - Procédé, terminal utilisateur, dispositif côté réseau et système de communication sans fil pour nouvelle sélection, d'une macro-cellule à un réseau limité - Google Patents

Procédé, terminal utilisateur, dispositif côté réseau et système de communication sans fil pour nouvelle sélection, d'une macro-cellule à un réseau limité Download PDF

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Publication number
WO2009012678A1
WO2009012678A1 PCT/CN2008/071374 CN2008071374W WO2009012678A1 WO 2009012678 A1 WO2009012678 A1 WO 2009012678A1 CN 2008071374 W CN2008071374 W CN 2008071374W WO 2009012678 A1 WO2009012678 A1 WO 2009012678A1
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WO
WIPO (PCT)
Prior art keywords
restricted network
network
signal quality
macro cell
restricted
Prior art date
Application number
PCT/CN2008/071374
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English (en)
Chinese (zh)
Inventor
Boyun Xie
Yinghui Yu
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009012678A1 publication Critical patent/WO2009012678A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method for reselecting from a macro cell to a restricted network, a user terminal, a network side device, and a wireless communication system.
  • LTE Long Term Evolution
  • the coverage of such a restricted network is small and the number is relatively large, especially the number of indoor indoor coverage base stations is large. In this case, users belonging to the restricted network need to be effectively managed while minimizing the limited network. The impact of the increase in the public network load and other aspects.
  • An important aspect of effective management of users belonging to a restricted network is the management of the user from the macro cell reselection to the restricted network.
  • a reselection scheme currently in the UMTS is when camped in a serving cell and is in an idle state.
  • the UE measures that the signal quality of the serving cell is lower than a certain threshold
  • the UE starts to measure the neighboring cell of the same-frequency/inter-frequency/extra-frequency system, and judges the neighboring cell signal according to the R criterion. , thereby determining whether to perform cell reselection.
  • the R criterion is mainly: when the UE measures the neighboring cell, if the neighboring cell is considered to be better than the serving cell, or the signal quality is stronger, the neighboring cell is reselected.
  • the inventors have found that when the restricted network reselection is performed using the above reselection scheme, if the restricted network is located close to the center of the macro cell, the signal of the macro cell measured by the UE in the macro cell is The quality is almost higher than the threshold for starting the neighboring cell measurement, so the UE does not initiate measurements on the restricted network, and it is impossible to reselect the restricted network.
  • the UE may not be stronger than the serving cell because the signal quality of the restricted network is not Reselect to a restricted network.
  • the UE may not be able to reselect the restricted network signal quality even if the quality of the restricted network signal in or near the macro cell can meet the normal working needs of the UE.
  • the internet The internet.
  • the main technical problem to be solved by the embodiments of the present invention is to provide a method for reselecting from a macro cell to a restricted network, so that the UE can preferentially reselect to the restricted network when approaching the restricted network.
  • Embodiments of the present invention also provide a user terminal, a network side device, and a wireless communication system.
  • the embodiments of the present invention provide the following technical solutions:
  • a method for reselecting a macro cell to a restricted network includes: Whether the user terminal UE reselects to the restricted network.
  • a user terminal includes: a reselection threshold acquisition module, a signal quality acquisition module, and a reselection determination module, where
  • a reselection threshold acquisition module configured to acquire a reselection threshold of the restricted network
  • a signal quality obtaining module configured to measure a restricted network cell in a macro cell, to obtain signal quality information of the restricted network
  • a reselection determining module configured to determine, according to the restricted network signal quality information of the signal quality acquiring module and the reselection threshold of the restricted network, whether the UE is reselected to the restricted network.
  • a network side device includes: a reselection threshold setting module and a sending module, where
  • a reselection threshold setting module is configured to set a reselection threshold of the restricted network, and send the reselection threshold through the sending module.
  • a wireless communication system includes a user terminal UE, where the user terminal is configured to acquire a reselection threshold of a restricted network, and measure a restricted network cell in a macro cell, The signal quality information of the restricted network, and determining whether the UE is reselected to the restricted network according to the reselection threshold of the restricted network and the restricted network signal quality information.
  • the UE determines whether the UE needs to reselect to the restricted network according to the measured restricted network signal quality information and the reselection threshold of the restricted network acquired by the UE, thereby ensuring the UE.
  • the reselection threshold is reselected to the restricted network to the greatest extent, and whether the UE is reselected depends mainly on the condition of the restricted network, and cannot be reselected to the restricted network because the macro cell signal quality is good.
  • the UE prefers to the restricted network cell, and also reduces the load on the public network, and enables the user to enjoy the charging preferential service initiated by the service in the restricted network cell.
  • FIG. 1 is a schematic flowchart of a method for reselecting from a macro cell to a restricted network according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic structural diagram of a user terminal according to Embodiment 3 of the present invention.
  • FIG. 1 The implementation process of the method embodiment of the present invention is as shown in FIG. 1 , which corresponds to the following steps:
  • Step 101 Obtain a reselection threshold for reselecting to a restricted network.
  • the reselection threshold may specifically be a signal quality threshold.
  • the signal quality threshold that allows the reselection to the restricted network may be set by the network side of the public network, and the signal quality threshold is sent by the network side in the macro cell; the UE may send the message from the macro cell.
  • the macro cell is a cell in which the UE currently camps.
  • the macro cell may broadcast the signal quality threshold in the range of the cell, and may broadcast the signal quality threshold by using a system message, where the signal quality threshold may be specifically set in the P-BCH or D- of the broadcast information. BCH.
  • the network side of the public network can specifically set the same threshold for multiple restricted networks.
  • the restricted network can also be classified, and a threshold is set for each type of restricted network. The network sets thresholds separately.
  • the signal quality threshold may also be set by the network side of the restricted network, and the signal quality threshold is sent by the network side in the restricted network cell, and the UE obtains the signal quality from the message sent by the restricted network. Threshold.
  • the specific sending manner may also be to broadcast the signal quality threshold, and the signal quality threshold may also be broadcast through a system message, and the signal quality threshold may be specifically set in the P-BCH or D-BCH of the broadcast information.
  • the network side of the restricted network can also set the signal quality threshold of the other restricted network, and send the signal quality threshold to the UE.
  • multiple restricted networks may be set to correspond to the same threshold; the restricted network may be classified, and a threshold is predefined for each type of restricted network;
  • the network pre-defined thresholds.
  • the threshold value may also be predefined for the restricted network in the UE, and the UE may directly acquire the signal quality threshold in the UE.
  • the signal quality threshold can be modified according to the commands issued by the public network or the restricted network, or modified manually or by other means.
  • multiple restricted networks may be set to correspond to the same threshold.
  • the restricted network may also be classified, and a threshold is predefined for each type of restricted network. ; You can also predefine thresholds for each of the restricted networks.
  • the signal quality threshold can be determined by the operator or through the network management.
  • the setup can of course be jointly developed by the operator and the network administrator.
  • the signal quality threshold may also be determined by the user based on the characteristics of the restricted network.
  • the signal quality threshold when specifically set, it may be set according to information such as the transmit power and coverage of the restricted network cell.
  • the set threshold is to ensure that the transmit power and/or coverage of the restricted network can be Meet the normal use needs of the UE.
  • the signal quality is collectively referred to as the measurement object (such as signal strength, signal quality, etc.) of the neighbor cell.
  • the measurement object such as signal strength, signal quality, etc.
  • Step 102 Perform measurement on the restricted network cell in the macro cell, and obtain signal quality information of the restricted network cell.
  • This step is different from the prior art in that the prior art measures the restricted network cell when the signal quality of the macro cell is lower than a certain threshold; however, this step 102 does not need to perform the processing and is directly started.
  • the UE may further determine whether there is a restricted network adjacent to the macro cell by using a correspondence between the macro cell and the neighboring restricted network cell, and After determining that there is an adjacent restricted network, the adjacent restricted network is determined to be a restricted network to be measured, and the determined restricted network is measured.
  • the LTE system it replaces the LA (Location Area) in the UMTS system with a TA (Tracking Area). In this case, it is necessary to make unnecessary measurements when the UE has no restricted network nearby.
  • the identifier of the TA where the macro cell adjacent to the restricted network cell that is allowed to access is located in the terminal may be recorded in the terminal. When the terminal determines that the information recorded by the terminal includes the identifier of the TA where the macro cell is located, the current need may be determined.
  • the restricted network is measured and the restricted network cells around the macro cell are measured.
  • Step 103 Determine, according to the measured signal quality of the restricted network cell and the signal quality threshold obtained in step 101, whether the UE reselects to the restricted network.
  • step 103 is: determining whether the measured signal quality of the restricted network cell is greater than the acquired signal quality threshold, and if yes, determining the UE Reselect to the restricted network.
  • the plurality of restricted network cell measurements may be compared and reselected to the optimal cell.
  • the UE can be reselected to the restricted network according to the signal quality threshold, and whether the UE is reselected mainly depends on the condition of the restricted network, and the signal quality of the macro cell is not good. It is not possible to reselect to a restricted network.
  • the UE prefers to the restricted network cell, which also reduces the load on the public network and enables the user to enjoy the charging preferential service for starting the service in the restricted network cell.
  • step 101 may be performed first, or step 102 may be performed first, or both steps may be performed simultaneously.
  • Another method embodiment of the present invention is to determine based on an offset value (Qoffset) between a restricted network and a neighboring macro cell.
  • Qoffset an offset value
  • the signal reselection threshold value obtained in the foregoing step 101 may specifically be an offset value (Qoffset) between the restricted network and the neighboring macro cell.
  • Qoffset an offset value
  • the number is usually large, and the number of macro cells is small. Therefore, a preferred implementation is to set the Qoffset between the restricted network cell and the neighboring macro cell by the network side of the restricted network, and deliver the Qoffset. Similar to the foregoing signal quality threshold, the Qoffset can also be set and recorded in the UE.
  • the Qoffset value can also be modified according to the information delivered by the restricted network, and can also be modified in other ways.
  • the specific setting of the Qoffset is also similar to the signal quality threshold, which can be determined by the operator, can also be set by the network management, or can be determined by the user according to the characteristics of the restricted network.
  • step 102 in addition to performing the foregoing step 102, that is, measuring the restricted network cell in the macro cell to obtain the signal quality information of the restricted network cell, it is also required to perform measurement on the macro cell signal quality.
  • the operations to be performed in the foregoing step 103 are specifically: determining the signal quality of the restricted network cell, the signal quality of the macro cell, and the acquired Qoffset according to the R criterion, and determining whether the UE is reselected to the Restricted network.
  • the foregoing obtaining the signal quality of the restricted network cell and the macro cell, and obtaining the Qoffset value are not particularly limited.
  • the UE can be guaranteed to reselect to the restricted network according to the Qoffset between the restricted network and the macro cell, and whether the UE is reselected depends mainly on the limited network, and not because of the macro.
  • the cell signal quality is good and cannot be reselected to the restricted network.
  • the UE reduces the load on the public network from the macro cell preference to the restricted network cell, and the user enjoys the charging preference for starting the service in the restricted network cell as much as possible.
  • the software corresponding to the embodiment can be stored in a A computer can store the read media, such as ROM/RAM, disk, CD, and so on.
  • the user terminal structure of the device embodiment of the present invention is as shown in FIG. 2, and includes a reselection threshold acquisition module 201, a signal quality acquisition module 203, and a reselection determination module 202.
  • the reselection threshold acquiring module 201 is configured to acquire a reselection threshold of the restricted network cell.
  • the reselection threshold may be a signal quality threshold of the restricted network cell, or may be a Qoffset value between the restricted network cell and the macro cell.
  • the specific settings of the two reselection thresholds are as described above and will not be described here.
  • the signal quality obtaining module 203 is configured to measure the restricted network cell in the macro cell to obtain signal quality information of the restricted network.
  • the module may further determine whether there is a neighbor adjacent to the macro cell by the correspondence between the macro cell and the neighboring restricted network cell. Limiting the network, and after determining that there are adjacent restricted networks, measuring the determined restricted network.
  • the TA identifier of the macro cell adjacent to the restricted network cell that is allowed to access may also be recorded in the terminal, so that the module may determine that the recorded information includes the TA where the macro cell is located. Identify, identify the current need to measure the restricted network.
  • the signal quality acquisition module if the reselection threshold acquisition module obtains the Qoffset value, the signal quality acquisition module also needs to perform measurement on the macro cell signal quality.
  • the reselection determining module 202 is configured to determine whether the UE is reselected to the restricted network according to the signal quality information of the restricted network cell measured by the signal quality acquiring module and the reselection threshold of the restricted network.
  • the reselection determining module may specifically perform: determining the measured restricted network cell Whether the signal quality is greater than the obtained signal quality threshold, and if so, determine this If the reselection threshold of the restricted network is a Qoffset value between the restricted network cell and the macro cell, correspondingly, the signal quality acquiring module is further required to obtain the signal quality of the current macro cell, and the reselection determining module is specific.
  • the method may be performed: determining, according to the R criterion, whether the UE is reselected to the restricted network according to the measured signal quality of the restricted network cell, the signal quality of the macro cell, and the acquired Qoffset.
  • the reselection threshold of the restricted network may be saved by the UE itself, that is, the UE itself further includes a storage module, where Save the reselection threshold for the restricted network.
  • the reselection threshold of the restricted network may also be: obtained by using a message sent by the network side, and the network side may be the network side of the macro cell or the network side of the restricted network.
  • the UE can be guaranteed to reselect to the restricted network to the greatest extent, and whether the UE is reselected depends mainly on the condition of the restricted network, and cannot be heavy because the quality of the macro cell signal is good. Select to a restricted network. Moreover, the UE prefers to the restricted network cell, and also reduces the load on the public network, and enables the user to enjoy the charging preferential service for starting the service in the restricted network cell.
  • the network side device of the macro cell/restricted network of the device embodiment of the present invention needs to include a sending module and a reselection threshold determining module.
  • the reselection threshold determining module of the network side device is configured to determine a reselection threshold of the restricted network, and send the threshold to the UE through the sending module.
  • the network side device may specifically send the reselection threshold value by using a broadcast message.
  • the reselection threshold may be sent in other manners. The specific delivery manner is not the focus of the embodiments of the present invention.
  • the reselection threshold determining module may specifically determine a signal quality threshold of the restricted network, and may also determine a Qoffset value between the restricted network and the macro cell.
  • the specific settings of the signal quality threshold and the Qoffset value are as described above, and are not described here.
  • the UE provides a reselection threshold for the UE by using the network side device, and the UE may reselect to the restricted network according to the reselection threshold, and whether the UE is reselected depends mainly on the restricted network. It is not possible to reselect a restricted network because of the good quality of the macro cell signal. And, the UE prefers to The restricted network cell also reduces the load on the public network and allows the user to enjoy the charging preferential service for starting the service in the restricted network cell.
  • the present invention also provides an embodiment of a wireless communication system, and the user terminal in the embodiment of the wireless communication system is configured to acquire a reselection threshold of the restricted network, and measure the restricted network cell in the macro cell to obtain the received Limiting the signal quality information of the network, and determining whether the UE is reselected to the restricted network according to the reselection threshold of the restricted network and the restricted network signal quality information.
  • the user terminal may specifically include a reselection threshold acquisition module, a signal quality acquisition module, and a reselection determination module, and the connection relationship between the modules is as shown in FIG. 2 .
  • the specific description of each module is as described above, and will not be described here.
  • the user terminal may further include a storage module, and the user terminal may obtain a reselection threshold from the storage module.
  • the network side device is used to set a reselection threshold of the restricted network, and sends the set reselection threshold.
  • the network side device may specifically include a reselection threshold setting module and a sending module.
  • the network side device may be a network side device of the macro cell or a network side device of the restricted network.
  • the reselection threshold set by the network side device may be a signal quality threshold of the restricted network or a Qoffset value between the restricted network and the macro cell, as described above.
  • the specific setting manner is also as described above, and details are not described herein again.
  • the UE can be reselected to the restricted network to the greatest extent, and whether the UE is reselected depends mainly on the condition of the restricted network, and cannot be re-selected because the macro cell signal quality is good. Restricted network.
  • the UE prefers to the restricted network cell, and also reduces the load on the public network, and enables the user to enjoy the charging preferential service initiated by the service in the restricted network cell.

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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 pour une nouvelle sélection, d'une macro-cellule à un réseau limité. Le procédé comprend les étapes suivantes : - obtention d'une valeur seuil de nouvelle sélection du réseau limité (101), - mesure du réseau limité dans la macro-cellule et obtention d'informations sur la qualité du signal du réseau limité (102), - détermination du fait qu'un UE de terminal utilisateur doive sélectionner à nouveau vers le réseau limité en fonction des informations de qualité du signal du réseau limité et de la valeur seuil de nouvelle sélection du réseau limité (103). L'invention concerne également un terminal utilisateur, un dispositif côté réseau et un système de communication sans fil pour une nouvelle sélection, d'une macro-cellule à un réseau limité. Les modes de réalisation s'assurent que l'UE puisse à nouveau sélectionner vers le réseau limité en fonction de la valeur seuil de nouvelle sélection dans le degré le plus important. Savoir si l'UE doit effectuer une nouvelle sélection dépend principalement de la situation du réseau limité et il est impossible de désactiver la nouvelle sélection sur le réseau limité du fait de la bonne qualité de signal de la macro-cellule.
PCT/CN2008/071374 2007-07-25 2008-06-19 Procédé, terminal utilisateur, dispositif côté réseau et système de communication sans fil pour nouvelle sélection, d'une macro-cellule à un réseau limité WO2009012678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007100752944A CN101355783A (zh) 2007-07-25 2007-07-25 一种从宏小区重选到受限网络的方法、装置及系统
CN200710075294.4 2007-07-25

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WO2009012678A1 true WO2009012678A1 (fr) 2009-01-29

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101841871A (zh) * 2009-03-17 2010-09-22 中兴通讯股份有限公司 基于家庭基站小区的小区重选方法与装置
CN102238675B (zh) * 2010-05-07 2015-03-11 中国移动通信集团湖北有限公司 无线场景异系统互操作的方法与装置
WO2017063125A1 (fr) * 2015-10-12 2017-04-20 华为技术有限公司 Procédé de resélection de cellule et équipement utilisateur

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US5673307A (en) * 1994-02-17 1997-09-30 Spectralink Corporation Handoff method for indoor cellular phone system
CN1404339A (zh) * 2001-08-16 2003-03-19 Lg电子株式会社 移动终端的小区选择方法
CN1607852A (zh) * 2003-10-15 2005-04-20 华为技术有限公司 多模移动终端进行小区选择的方法
CN1794877A (zh) * 2005-11-08 2006-06-28 华为技术有限公司 小区重选处理方法、终端测量方法及用户终端

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US5673307A (en) * 1994-02-17 1997-09-30 Spectralink Corporation Handoff method for indoor cellular phone system
CN1404339A (zh) * 2001-08-16 2003-03-19 Lg电子株式会社 移动终端的小区选择方法
CN1607852A (zh) * 2003-10-15 2005-04-20 华为技术有限公司 多模移动终端进行小区选择的方法
CN1794877A (zh) * 2005-11-08 2006-06-28 华为技术有限公司 小区重选处理方法、终端测量方法及用户终端

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