WO2011152999A1 - Procédé et appareil destinés à mettre en œuvre une sélection de cellule assistée ou une sélection de cellule par informations coopératives - Google Patents

Procédé et appareil destinés à mettre en œuvre une sélection de cellule assistée ou une sélection de cellule par informations coopératives Download PDF

Info

Publication number
WO2011152999A1
WO2011152999A1 PCT/US2011/037156 US2011037156W WO2011152999A1 WO 2011152999 A1 WO2011152999 A1 WO 2011152999A1 US 2011037156 W US2011037156 W US 2011037156W WO 2011152999 A1 WO2011152999 A1 WO 2011152999A1
Authority
WO
WIPO (PCT)
Prior art keywords
wtru
cell selection
rat
information
cell
Prior art date
Application number
PCT/US2011/037156
Other languages
English (en)
Inventor
John R. Cartmell
Prabhakar R. Chitrapu
Original Assignee
Interdigital Patent Holdings, Inc.
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 Interdigital Patent Holdings, Inc. filed Critical Interdigital Patent Holdings, Inc.
Publication of WO2011152999A1 publication Critical patent/WO2011152999A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection

Definitions

  • FIG. 1 is a flow diagram of a conventional cell selection procedure 100 performed when a wireless transmit/receive unit (WTRU), (i.e., a mobile station), is in idle mode.
  • a universal subscriber identity module (USIM) is inserted into the WTRU (105).
  • the power of the WTRU is turned on when the WTRU is within the cellular radio system (110), and the WTRU searches the USIM for suitable cell information (115), which may include cell frequencies and primary scrambling codes.
  • suitable cell information may include cell frequencies and primary scrambling codes. For example, several WTRU users that are within range of a cell near an airport where their plane has just landed may turn on their cellphones after being granted permission by a flight attendant.
  • WTRUs may need to establish communication with a network at an enhanced speed.
  • initial cell selection is required, meeting such an enhanced speed may not be possible, especially since the WTRU must not only acquire synchronization with the cell, but must also read and decode BCH information.
  • modifications to the conventional cell selection procedure 100 are needed.
  • Figure 2C shows an example radio access network and an example core network that may be used within the communications system shown in Figure 2A;
  • Figure 5 is a flow diagram of a cell selection procedure performed by a multi-RAT WTRU in conjunction with at least one camped WTRU;
  • 202b, 202c may implement a radio technology such as evolved UTRA (E-UTRA), which may establish the air interface 216 using long term evolution (LTE) and/or LTE- Advanced (LTE- A).
  • E-UTRA evolved UTRA
  • LTE long term evolution
  • LTE- A LTE- Advanced
  • the RAN 204 may be in communication with the core network 206, which may be any type of network configured to provide voice, data, applications, and/or voice over Internet protocol (VoIP) services to one or more of the WTRUs 202a, 202b, 202c, 202d.
  • the core network 206 may provide call control, billing services, mobile location-based services, pre-paid calling, Internet connectivity, video distribution, and the like, and/or perform high-level security functions, such as user authentication.
  • the RAN 204 and/or the core network 206 may be in direct or indirect communication with other RANs that employ the same RAT as the RAN 204 or a different RAT.
  • the core network 206 may also be in communication with another RAN (not shown) employing a GSM radio technology.
  • the transceiver 220 may be configured to modulate the signals that are to be transmitted by the transmit/receive element 222 and to demodulate the signals that are received by the transmit/receive element 222.
  • the WTRU 202 may have multi-mode capabilities.
  • the transceiver 220 may include multiple transceivers for enabling the WTRU 202 to communicate via multiple RATs, such as UTRA and IEEE 802.11, for example.
  • the processor 218 may receive power from the power source 234, and may be configured to distribute and/or control the power to the other components in the WTRU 202.
  • the power source 234 may be any suitable device for powering the WTRU 202.
  • the power source 234 may include one or more dry cell batteries (e.g., nickel-cadmium (NiCd), nickel-zinc (NiZn), nickel metal hydride (NiMH), lithium-ion (Li-ion), and the like), solar cells, fuel cells, and the like.
  • the processor 218 may also be coupled to the GPS chipset 236, which may be configured to provide location information (e.g., longitude and latitude) regarding the current location of the WTRU 202.
  • the serving gateway 244 may be connected to each of the eNBs
  • the core network 206 may facilitate communications with other networks.
  • the core network 206 may provide the WTRUs 202a, 202b, 202c with access to circuit-switched networks, such as the PSTN 208, to facilitate communications between the WTRUs 202a, 202b, 202c and traditional land-line communications devices.
  • the core network 206 may include, or may communicate with, an IP gateway, (e.g., an IP multimedia subsystem (IMS) server), that serves as an interface between the core network 206 and the PSTN 208.
  • IMS IP multimedia subsystem
  • the core network 206 may provide the WTRUs 202a, 202b, 202c with access to the networks 212, which may include other wired or wireless networks that are owned and/or operated by other service providers.
  • the assistance data may be sent using cellular or other radio access technologies, such as WiFi, Bluetooth, and the like.
  • the assistance data itself may consist of parameters of the current cells in the vicinity, or the cell broadcast information.
  • assisted methods for cell search may also be extended to other network functions typically performed by a WTRU.
  • a WTRU may retrieve from the network a list of services currently available from the network, including a number of attributes about the available services. These services may include "transport" services, such as video streaming service with the list of video codes supported, instant messaging, push- to-talk services, and the like.
  • a WTRU may also download a list of "content," presently available in the local network cache node.
  • a cooperative solution may consist of a new WTRU obtaining this information locally, instead of obtaining the information (all over again) from the network. This reduces the amount of macro-network traffic and improves the overall network performance.
  • FIG. 3 is a flow diagram of a cell selection procedure 300 performed by a multi-RAT WTRU in conjunction with a network-deployed communication unit.
  • a USIM is inserted into the WTRU (305).
  • the power of the WTRU is turned on when the WTRU is within the cellular radio system (310), and the WTRU searches the USIM for cell information (315), which may include cell frequencies and primary scrambling codes.
  • cell information 315
  • a stored information cell selection procedure is implemented (325).
  • the stored information cell selection procedure (325) requires stored information of carrier frequencies and, optionally, also information on cell parameters, from previously received measurement control information elements or from previously detected cells.
  • the signal 475 may include BCH SI that the multi-RAT WTRU 405 may decode in a similar manner as a UMTS WTRU.
  • the WTRU may access this data from this network- deployed communication unit 410 instead of the cell.
  • the BCH SI provided by the network- deployed communication unit 410 may be identical to that broadcast by the cell.
  • the multi-RAT WTRU 605 may discover at least one camped WTRU 610 and request current local cell information via at least one signal 665.
  • the camped WTRU 610 may send back at least one signal 670 including the requested current local cell information.
  • the WTRU 605 may discover at least one camped WTRU 610 and request current SI via at least one signal 665.
  • at least one camped WTRU 610 may send back at least one signal 670 including a plurality of SIBs.
  • the multi-RAT WTRU 605 may select and monitor the indicated paging channels of the cell, monitor relevant SI, perform necessary measurements for performing a cell reselection evaluation procedure, and execute the cell reselection evaluation process on WTRU internal triggers.
  • the cell reselection evaluation process may be performed when information on a BCCH used for the cell reselection evaluation procedure has been modified.
  • the multi-RAT WTRU 605 may regularly attempt to find a suitable cell by trying all frequencies of all RATs that are supported by the multi-RAT WTRU 605. If a suitable cell is found, the multi-RAT WTRU 605 may move to a camped normally state.
  • the first RAT is universal mobile telecommunications system (UMTS) and the second RAT is Bluetooth or WiFi.
  • UMTS universal mobile telecommunications system
  • a receiver configured to receive at least one signal from the network- deployed communication unit including cell selection information.

Landscapes

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

Abstract

L'invention concerne un procédé et un appareil permettant de sélectionner une cellule à conserver au sein d'un réseau cellulaire. Il est possible de rechercher, au moyen d'une première technologie d'accès radio à fréquences multiples (RAT), des informations de sélection de cellule stockées dans une unité d'émission/réception sans fil (WTRU) basée sur une RAT. Si aucune information de sélection de cellule n'est trouvée, ou si aucune cellule appropriée pouvant être conservée par la WTRU n'a été trouvée grâce à une procédure de sélection de cellule par informations stockées basée sur la première RAT, une procédure de sélection de cellule assistée ou une procédure de sélection de cellule par informations coopératives peut être mise en œuvre au moyen d'une seconde RAT. Si aucune cellule appropriée pouvant être conservée par la WTRU n'a été trouvée grâce à la procédure de sélection de cellule assistée ou à la procédure de sélection de cellule par informations coopératives, une procédure de sélection de cellule initiale peut être mise en œuvre au moyen de la première RAT.
PCT/US2011/037156 2010-06-01 2011-05-19 Procédé et appareil destinés à mettre en œuvre une sélection de cellule assistée ou une sélection de cellule par informations coopératives WO2011152999A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35024010P 2010-06-01 2010-06-01
US61/350,240 2010-06-01

Publications (1)

Publication Number Publication Date
WO2011152999A1 true WO2011152999A1 (fr) 2011-12-08

Family

ID=44260927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/037156 WO2011152999A1 (fr) 2010-06-01 2011-05-19 Procédé et appareil destinés à mettre en œuvre une sélection de cellule assistée ou une sélection de cellule par informations coopératives

Country Status (1)

Country Link
WO (1) WO2011152999A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013164032A1 (fr) * 2012-05-03 2013-11-07 Huawei Technologies Sweden Ab Envoi d'informations d'accès d'un système de contrôle d'accès physique à un terminal d'utilisateur
WO2018016922A1 (fr) * 2016-07-22 2018-01-25 Samsung Electronics Co., Ltd. Procédé et système d'acquisition d'informations système dans un système de communication sans fil
WO2018233964A1 (fr) * 2017-06-23 2018-12-27 Nokia Technologies Oy Acquittement d'une demande d'informations système
EP4074099A4 (fr) * 2019-12-17 2023-09-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé et appareil de priorisation de (re)sélection de cellules nsa 5g

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004077752A1 (fr) * 2003-02-24 2004-09-10 Qualcomm, Incorporated Detection et selection de systeme de reseau a acces local sans fil
EP1915004A1 (fr) * 2006-10-16 2008-04-23 Nokia Siemens Networks Gmbh & Co. Kg Canal ascendent multi-système de communication radio
US20090221283A1 (en) * 2008-03-03 2009-09-03 Qualcomm Incorporated Assisted initial network acquisition and system determination

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004077752A1 (fr) * 2003-02-24 2004-09-10 Qualcomm, Incorporated Detection et selection de systeme de reseau a acces local sans fil
EP1915004A1 (fr) * 2006-10-16 2008-04-23 Nokia Siemens Networks Gmbh & Co. Kg Canal ascendent multi-système de communication radio
US20090221283A1 (en) * 2008-03-03 2009-09-03 Qualcomm Incorporated Assisted initial network acquisition and system determination

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode (3GPP TS 36.304 version 9.2.0 Release 9)", TECHNICAL SPECIFICATION, EUROPEAN TELECOMMUNICATIONS STANDARDS INSTITUTE (ETSI), 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS ; FRANCE, vol. 3GPP RAN 2, no. V9.2.0, 1 April 2010 (2010-04-01), XP014046903 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013164032A1 (fr) * 2012-05-03 2013-11-07 Huawei Technologies Sweden Ab Envoi d'informations d'accès d'un système de contrôle d'accès physique à un terminal d'utilisateur
US9848363B2 (en) 2012-05-03 2017-12-19 Huawei Technologies Sweden Ab Sending access information from physical access control system to user terminal
WO2018016922A1 (fr) * 2016-07-22 2018-01-25 Samsung Electronics Co., Ltd. Procédé et système d'acquisition d'informations système dans un système de communication sans fil
US10694460B2 (en) 2016-07-22 2020-06-23 Samsung Electronics Co., Ltd Method and system for system information acquisition in wireless communication system
US20200359310A1 (en) 2016-07-22 2020-11-12 Samsung Electronics Co., Ltd. Method and system for system information acquisition in wireless communication system
US11178608B2 (en) 2016-07-22 2021-11-16 Samsung Electronics Co., Ltd Method and system for system information acquisition in wireless communication system
US11665637B2 (en) 2016-07-22 2023-05-30 Samsung Electronics Co., Ltd Method and system for system information acquisition in wireless communication system
WO2018233964A1 (fr) * 2017-06-23 2018-12-27 Nokia Technologies Oy Acquittement d'une demande d'informations système
EP4074099A4 (fr) * 2019-12-17 2023-09-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé et appareil de priorisation de (re)sélection de cellules nsa 5g

Similar Documents

Publication Publication Date Title
US11843985B2 (en) Methods for enforcing limited mobility in mobile network
US10064211B2 (en) Accessing applications by devices in proximity in a communications network
US10165481B2 (en) Method and apparatus for adding CSG identities to a white list in connected mode
US20170201972A1 (en) Method and apparatus for small cell discovery in heterogeneous networks
US10039042B2 (en) Method of multi-radio interworking in heterogeneous wireless communication networks
JP2021500800A (ja) ネットワークスライシングと発展型パケットコア接続性との間の相互作用を可能にするためのメカニズム
JP2017103821A (ja) セルフォワードアクセスチャネル（ｃｅｌｌ ｆａｃｈ）状態におけるホームノードｂ（ｈｎｂ）モビリティのための方法
US9769720B2 (en) Paging response via an offload cell
WO2011152999A1 (fr) Procédé et appareil destinés à mettre en œuvre une sélection de cellule assistée ou une sélection de cellule par informations coopératives
WO2024107823A1 (fr) Sélection de cellule/plmn

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11725554

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11725554

Country of ref document: EP

Kind code of ref document: A1