EP2885943A1 - Éléments de réseau, système de communication cellulaire et leurs procédés - Google Patents

Éléments de réseau, système de communication cellulaire et leurs procédés

Info

Publication number
EP2885943A1
EP2885943A1 EP13739714.7A EP13739714A EP2885943A1 EP 2885943 A1 EP2885943 A1 EP 2885943A1 EP 13739714 A EP13739714 A EP 13739714A EP 2885943 A1 EP2885943 A1 EP 2885943A1
Authority
EP
European Patent Office
Prior art keywords
cell
communication unit
system information
wireless communication
network
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP13739714.7A
Other languages
German (de)
English (en)
Inventor
Christopher Edward John Kilgour
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IP Access Ltd
Original Assignee
IP Access 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 IP Access Ltd filed Critical IP Access Ltd
Publication of EP2885943A1 publication Critical patent/EP2885943A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • 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
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements

Definitions

  • the field of this invention relates to network elements, a cellular communication system and methods therefor.
  • the invention is applicable to, but not limited to, a network element for supporting communication within at least one cell of a cellular communication system, and a method for employing Broadcast messages therein.
  • Wireless communication systems such as the 3 rd Generation (3G) of mobile telephone standards and technology
  • 3G 3rd Generation
  • 3G Universal Mobile Telecommunications System
  • 3GPPTM 3 rd Generation Partnership Project
  • the 3 rd generation of wireless communications has generally been developed to support macro-cell mobile phone communications.
  • Such macro cells utilise high power base stations (NodeBs in 3GPP parlance) to communicate with wireless communication units within a relatively large geographical coverage area.
  • NodeBs high power base stations
  • wireless communication units or User Equipment (UEs) as they are often referred to in 3G parlance, communicate with a Core Network (CN) of the 3G wireless communication system via a Radio Network Subsystem (RNS).
  • CN Core Network
  • RNS Radio Network Subsystem
  • a wireless communication system typically comprises a plurality of radio network subsystems, each radio network subsystem comprising one or more cells to which UEs may attach, and thereby connect to the network.
  • Each macro-cellular RNS further comprises a controller, in a form of a Radio Network Controller (RNC), operably coupled to the one or more Node Bs, via a so-called lub interface.
  • RNC Radio Network Controller
  • the second generation wireless communication system also known as GSM, is a well- established cellular, wireless communications technology whereby "base transceiver stations” (equivalent to the Node B's of the 3G system) and "mobile units” (user equipment) can transmit and receive voice and packet data.
  • base transceiver stations are controlled by a Base Station Controller (BSC), equivalent to the RNC of 3G systems.
  • BSC Base Station Controller
  • Lower power (and therefore smaller coverage area) cells are currently referred to as 'small' cells, with the term femto cells typically reserved to refer to a residential small cell.
  • Small cells are effectively communication coverage areas supported by low power base stations (otherwise referred to as Access Points (APs) with the term Home Node Bs (HNBs) identifying femto cell access points).
  • APs Access Points
  • HNBs Home Node Bs
  • An additional benefit of small cells is that they offload of traffic from the macro network to small cells, thereby freeing up valuable macro network resources.
  • Typical applications for such AP's include, by way of example, residential and commercial (e.g. office) locations, communication 'hotspots', etc., whereby HNBs can be connected to a core network via, for example, the Internet using a broadband connection or the like.
  • HNBs can be connected to a core network via, for example, the Internet using a broadband connection or the like.
  • small cells can be provided in a simple, scalable deployment in specific in-building locations where, for example, network congestion at the macro-cell level may be problematic.
  • small cell access points incorporate a downlink (DL) receiver radio sub-system, in a similar manner to a UE receiver, in order to wirelessly receive transmissions from other wireless serving communication units, such as NodeBs, other small cell AP's .
  • a small cell AP is able to scan for, receive, and decode transmissions from base stations, including macro cells and other small cells, in a manner that is termed Network Listen (NWL).
  • NWL Network Listen can operate with base stations belonging to the same network as the small cell AP, with base stations on the same or a different frequency band as the small cell AP, and with both 2G and 3G base stations.
  • LTE Long Term Evolution
  • SAE System Architecture Evolution
  • EPC Evolved Packet Core
  • User Equipment ⁇ UE can access a CS domain core network through a 2G/3GRAN such as the (Enhanced Data Rate for GSM Evolution, EDGE) Radio Access Network (Radio Access Network, GERAN) or a Universal Mobile Telecommunication System Terrestrial Radio Access Network (Universal Mobile Telecommunication System Terrestrial Radio Access Network, UTRAN), and access the EPC through the E-UTRAN.
  • a 2G/3GRAN such as the (Enhanced Data Rate for GSM Evolution, EDGE) Radio Access Network (Radio Access Network, GERAN) or a Universal Mobile Telecommunication System Terrestrial Radio Access Network (Universal Mobile Telecommunication System Terrestrial Radio Access Network, UTRAN), and access the EPC through the E-UTRAN.
  • EDGE Enhanced Data Rate for GSM Evolution
  • GERAN Radio Access Network
  • UTRAN Universal Mobile Telecommunication System Terrestrial Radio Access Network
  • a so-called neighbour cell list is used to identify adjacent cells to each macro cell, to facilitate handover of UE communications between cells.
  • the neighbour cell list is broadcast to roaming UEs by the network to enable the roaming UE to receive and assess the suitability of continuing a communication by transferring the communication to an adjacent (neighbour) cell.
  • a UE receives the neighbour cell list in a radio resource control (RRC) system information broadcast message or by a specific UE message if it is in an active call.
  • RRC radio resource control
  • a neighbour cell list for a Node-B for example (as configured at the RNC) is essentially a list of structures; with each structure containing a frequency and scrambling code to be used by the UE to access signals from every neighbour cell.
  • the UE measures the cells with the specified frequency and scrambling code to identify the best (generally closest) neighbouring macro cells to consider as potential target cells.
  • the UE then monitors neighbour cells and once one of them meets the specified criteria, the UE sends a Measurement Report to the RNC. Based on the information in the Measurement Report, the RNC determines whether to perform handover for the UE.
  • one known method for ensuring packet switching mobility relies on the GERAN-capable User Equipment to control the handover process. It does this by monitoring System Information (SI) / Packet System Information (PSI) Broadcast messages from the target cell, prior to notifying the target cell of its arrival and subsequently requesting the packet data stream from the target cell.
  • SI System Information
  • PSI Packet System Information
  • NACC network assisted cell change
  • Network assisted cell change was introduced by the 3GPP for GERAN- capable User Equipments in 3GPP Release 4. In 3GPP Release 5/6, this network assisted method was extended for handovers between cells which were operating in different Radio Access Networks, specifically cell changes from 2G to GERAN and 3G to GERAN. 3GPP Release 8 extended it further still for LTE to GERAN cell changes. Network Assisted Cell Change from UTRAN to GERAN is described in 3GPP TS 25.901. An External Network Assisted Cell Change is described in 3GPP TS 44.901.
  • the NACC method creates the problem of getting the required System Information / Packet System Information from the target cell to the source cell and ensuring that it is accurate. This is particularly challenging in cases where the source and target cells are not attached to the same Base Station Controller.
  • 3GPP proposed a solution known as the radio access network information management (RIM) mechanism.
  • RIM radio access network information management
  • MME mobility management entity
  • system information shall be understood to include packet system information.
  • system information may include repeat frequency, timing, reference frequency channel information, Random Access Channel (RACH) and Packet RACH (PRACH) control parameters for initiating access to the cell, Power Control Parameters, Control Channel format and organisation, frequency range, neighbour cell identities, neighbour cell frequencies, neighbour cell control and broadcast channel structure and information, NC mode (cell selection mode), Location Area Identities, DTX parameters for particular channels, parameters controlling cell reselection and hysteresis, support of GPRS, paging modes used, measurement order and control, Other information broadcast by a cell, include, the contents of System Information Message Type 1 , System Information Message Type 3, System Information Type 13 as defined in 3GPP TS 48.018 for transmission on the Broadcast Control Channel (BCCH) or the Packet System Information Message Type 1
  • the invention seeks to mitigate, alleviate or eliminate one or more of the above mentioned disadvantages, either singly or in any combination.
  • aspects of the invention provide network elements, a cellular communication system, and methods therefor, as described in the appended claims.
  • a network element for supporting mobility of a wireless communication unit between cells in a cellular communication system
  • the network element comprising a network listen receiver for receiving broadcast transmissions including system information transmitted by at least one wireless serving communication unit supporting a cell, signal processing logic arranged to extract system information included in said broadcast transmission and relevant for assisting relocation of a wireless communication unit from one cell to another, a store for storing said extracted system information, and a transmitter, for transmitting the stored, extracted system information to the wireless communication unit for enabling the wireless communication unit to relocate from one cell to another.
  • the inventive concept provides an improvement to the use of Broadcast messages, which may be used to facilitate relocation (sometimes referred to as handover or reselection) from a source cell to a target cell in a cellular communication system which supports communication over both macrocells and fentocells (or any cell of small coverage area) and between cells operating on different Radio Access Networks.
  • RIM Network Information Management
  • the signal processing logic may be implemented in an integrated circuit device.
  • Extracted System Information may include repeat frequency, timing, reference frequency channel information, Random Access Channel (RACH) and Packet RACH (PRACH) control parameters for initiating access to the cell, Power Control Parameters, Control Channel format and organisation, frequency range, neighbour cell identities, neighbour cell frequencies, neighbour cell control and broadcast channel structure and information, NC mode (cell selection mode), Location Area Identities, DTX parameters for particular channels, parameters controlling cell reselection and hysteresis, support of GPRS, paging modes used, measurement order and control, Other information broadcast by a cell and which may be extracted by the signal processing logic, include, the contents of System Information Message Type 1 , System Information Message Type 3, System Information Type 13 as defined in 3GPP TS 48.018 for transmission on the Broadcast Control Channel (BCCH) or the Packet System Information Message Type 1 , Packet System Information Message Type 2, Packet System Information Message Type 14 as defined in 3GPP TS 44.060 for a cell supporting the Packet Broadcast Control Channel (PBCCH
  • the invention is particularly useful for assisting handover (or relocation of a user equipment from a 3G cell to a 2G cell or from an LTE cell to a to 2G cell for a user equipment which supports NACC.
  • the invention has the advantage that it can be employed with standard user equipment, ie.no modifications need to be made to the user equipment.
  • the network element may be arranged to assist a handover or relocation of a user equipment from a source cell to a target neighbour cell, the target neighbour cell having been identified by the signal processing logic as being capable of supporting packet data flow transmission from broadcast messages received from the target neighbour cell by the receiver.
  • the signal processing logic may be adapted to use measurements, made by the wireless communication unit, relating to a potential target neighbour cell, and reported to the network element, in addition to the received broadcast transmissions, in order to extract system information relevant for relocation to the potential target neighbour cell.
  • a method for supporting mobility of a wireless communication unit between cells in a cellular communication system comprising; receiving at a network listen receiver, broadcast transmissions including system information transmitted by at least one wireless serving communication unit supporting a cell, extracting system information included in said broadcast transmission and relevant for assisting relocation of a wireless communication unit from one cell to another, storing said extracted system information, and transmitting the stored, extracted system information to the wireless communication unit for enabling the wireless communication unit to relocate from one cell to another.
  • a wireless communication system adapted to support mobility of a wireless communication unit between cells, the wireless communication system comprising; a network listen receiver for receiving broadcast transmissions including system information transmitted by at least one wireless serving communication unit supporting a cell, signal processing logic arranged to extract system information included in said broadcast transmission and relevant for assisting relocation of a wireless communication unit from one cell to another, a store for storing said extracted system information, and a transmitter, for transmitting the stored, extracted system information to the wireless communication unit for enabling the wireless communication unit to relocate from one cell to another.
  • the invention may find application in small cell systems, in which case, a network element in accordance with the first aspect of the invention may be incorporated into an Access Point.
  • the store may also be incorporated in the access point.
  • the store may be located remotely from the access point in another network module which is capable of communicating the extracted system information to and from the access point.
  • several access points could contribute relevant system information broadcast from neighbouring cells to the central store.
  • the central store could be conveniently located in a Home Note B Management System or a Home Note B, Gateway or a central control box in the enterprise operating the small cell system.
  • the tangible computer program product has executable program code stored therein for programming signal processing logic to perform a method for supporting mobility of a wireless communication unit between cells in a cellular communication system, the tangible computer program product comprising code for; receiving at a network listen receiver, broadcast transmissions including system information transmitted by at least one wireless serving communication unit supporting a cell, extracting system information included in said broadcast transmission and relevant for assisting relocation of a wireless communication unit from one cell to another, storing said extracted system information, and transmitting the stored, extracted system information to the wireless communication unit for enabling the wireless communication unit to relocate from one cell to another.
  • the tangible computer program product may comprise at least one from a group consisting of: a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a Read Only Memory, a Programmable Read Only Memory, an Erasable Programmable Read Only Memory, EPROM, an Electrically Erasable Programmable Read Only Memory and a Flash memory
  • FIG. 1 illustrates a part of a cellular communication system operating in accordance with an example embodiment
  • FIG. 2 is a simplified flow chart of an example of a method for supporting mobility of a wireless communication unit within a wireless communication system.
  • the inventive concept finds particular applicability in a cellular communication system that supports a number of overlapping communication coverage areas, a communication system that comprises a combination of small cells and macro-cells and also one where more than one RAN is employed, e.g. 2G, 3G, LTE.
  • FIG. 1 an example of part of a wireless communication system, adapted in accordance with some embodiments of the invention, is illustrated and indicated generally at 100 and comprises a 3G small cell(cell A), a 2G macro-cell (cell B) and a LTE small cell (cell C).
  • a core network of the wireless communication system of Fig. 1 includes a Gateway General
  • the GGSN 101 is responsible for interfacing the wireless communication system 100 with a packet data network, for example a Public Switched Data Network (PSDN), (such as the Internet) or a Public Switched Telephone Network (PSTN).
  • PSDN Public Switched Data Network
  • PSTN Public Switched Telephone Network
  • the SSGN 102 performs a routing and tunnelling function for traffic to and from the cells A, B and C while the GGSN 102 links with external packet networks.
  • PSDN Public Switched Data Network
  • PSTN Public Switched Telephone Network
  • the SSGN 102 performs a routing and tunnelling function for traffic to and from the cells A, B and C while the GGSN 102 links with external packet networks.
  • P-GW Packet Gateway
  • Small cell A is linked to the SGSN by way of lu-PS and luh links via a 3G Home Node B Gateway 103.
  • the small cell A is served by a network element in the form of an Access Point(AP)/Home Node B 104 which includes a signal processing logic module 105.
  • an access point 104 is a communication element that facilitates access to a communication network via a communication cell, such as a small cell.
  • AP 104 may be purchased by a member of the public and installed in their home. The AP 104 may then be connected to the HNB-GW 103 over the owner's broadband Internet connection.
  • the AP 104 is typically provided with transmitting and receiving means for communicating wirelessly with a user equipment.
  • an AP 104 is a scalable, multi-channel, two-way communication device that may be provided within, say, residential and commercial (e.g. office) locations, 'hotspots' etc, to extend or improve upon network coverage within those locations.
  • an example of a typical AP for use within a 3GPP 3G system may comprise Node-B functionality and some aspects of Radio Network Controller (RNC) functionality as specified in 3GPP TS 25.467.
  • RNC Radio Network Controller
  • the AP 104 communicates with User Equipments (UE) such as UE 106 of Fig. 1 , via a wireless interface.
  • UE 106 supports Network Assisted Cell Change NACC
  • the AP 104 in accordance with an example of the invention, includes a network listen receiver 107.
  • the output of this receiver 107 is connected to the signal processing logic module105,
  • the 2G (GSM) macro-cell B is served by a Base Transceiver Station (BTS) 108 which is controlled by a Base Station Controller (BSC) 109.
  • BSC Base Station Controller
  • the BSC 109 is linked to the SGSN 102 and a Mobile Switching Centre 1 10.
  • Small cell C is linked to the SSGN 102 through a Mobility Management Entity (MME) 1 1 1.
  • MME Mobility Management Entity
  • Small cell C is also connected with the GGSN 101 through the MME 102 and a switching Gateway 1 12.
  • the LTE small cell C is served by an Access Point 1 13 which incorporates a signal processing logic module 1 14.
  • the Access Point 1 13 is provided with a network listen receiver 1 15.
  • the UE 106 is attached to small cell A and both small cells A and C are capable of listening to the broadcast channel of the 2G macro-cell B, which is transmitted by the BTS 108, by means of their network listen receivers 107, 1 15.
  • the broadcast transmissions from the BTS 108 contain system information relevant for handover/relocation purposes.
  • the System Information needed for assisting a handover from a HNB LTE in NACC handover is SIB 1 , 3 and 13 and PSI 1 ,2 and 14.
  • the AP 104 of cell A is supporting packet data communications with UE 106.
  • the network listen receiver 107 is constantly listening to the broadcast transmissions of neighbouring cells particularly the 2G cell A in this example.
  • the network listen receiver outputs the received signals to the signal processing logic module 105.
  • the logic module 105 extracts the System Information contained within the broadcast signals which are relevant to handover/relocation and stores the information in an associated data store 1 16 along with the identity of the neighbour cell 108.
  • the extracted System Information values are monitored ( by the logic module 105) for any changes over time and the store is updated accordingly
  • the network listen receiver 1 15 of cell C may act in a similar fashion whereby its signal processing logic module 1 14 extracts relevant System Information and stores it in an associated store (not shown).
  • the stored System Information is used to pre-provision the UE 106 with the relevant information for assisting a NACC handover or relocation operation, eg. from 3G small cell A to 2G cell B or from LTE cell C to 2G cell B.
  • a commonly used term for handover or relocation in the context of NACC is "reselection.”
  • the UE 106 starts the reselection procedure. It requests reselection from its source cell A to a particular identified target cell, cell B in this example.
  • the relevant System Information of this cell has been extracted by the logic module 105 from cell A's broadcast transmissions and stored in the store 1 16. During the reselection process, this information is extracted from the store 1 16 by the processing logic module 105 and transmitted from the AP 104 to the UE 106.
  • the UE is pre-provisioned with relevant System Information for reselection, therefore handover is done quickly, improving the user experience during cell change.
  • the UE does not have to be modified in any way and the use of RIM is not required.
  • the relevant System Information for handover may be incorporated into the conventional Radio Resource Control RRC message which is sent, by the source cell (A) to the UE 106 for assisting with the handover.
  • RRC Radio Resource Control
  • An example of such a message is the Cell Change Order from U-TRAN- TS 25.331. This has the advantage of improving the user experience during cell change.
  • an Automatic Neighbour Relation process may be employed which allows cells to detect automatically their neighbours based on UE reports.
  • the network listen receiver 107 might not have the same range as a UE so these UE measurement reports may be used to supplement the relevant System Information detected by the network listen receiver 107 and subsequently stored in the store 1 16.
  • FIG. 2 there is illustrated a simplified flow chart 200 of an example of a method for supporting mobility of a wireless communication unit within a wireless communication system.
  • the flow chart of FIG. 2 starts at 201 and moves to 202 where network listen results for NACC-relevant broadcast system data, which are obtained from one or more cells, are placed in a store. Subsequently at 203, a UE arrives on a source cell and registers for a packet switched domain. At 204, if the UE does not support NACC, then no further action can be taken but if it does, then the method moves to 205. At 205, the UE indicates to the network that it wishes to reselect to a target cell for which NACC is applicable (eg.
  • the NACC System Information is obtained from the store.
  • the source cell supplies the UE with the NACC information for the selected target cell.
  • the UE is allowed to continue reselection to the target cell and at 209, the process ends.
  • the signal processing functionality of the embodiments of the invention may be achieved using computing systems or architectures known to those who are skilled in the relevant art.
  • Computing systems such as, a desktop, laptop or notebook computer, hand-held computing device (PDA, cell phone, palmtop, etc.), mainframe, server, client, or any other type of special or general purpose computing device as may be desirable or appropriate for a given application or environment can be used.
  • the computing system can include one or more processors which can be implemented using a general or special-purpose processing engine such as, for example, a microprocessor, microcontroller or other control module.
  • the computing system can also include a main memory, such as random access memory (RAM) or other dynamic memory, for storing information and instructions to be executed by a processor. Such a main memory also may be used for storing temporary variables or other intermediate information during execution of instructions to be executed by the processor.
  • the computing system may likewise include a read only memory (ROM) or other static storage device for storing static information and instructions for a processor.
  • ROM read only memory
  • the computing system may also include an information storage system which may include, for example, a media drive and a removable storage interface.
  • the media drive may include a drive or other mechanism to support fixed or removable storage media, such as a hard disk drive, a floppy disk drive, a magnetic tape drive, an optical disk drive, a compact disc (CD) or digital video drive (DVD) read or write drive (R or RW), or other removable or fixed media drive.
  • Storage media may include, for example, a hard disk, floppy disk, magnetic tape, optical disk, CD or DVD, or other fixed or removable medium that is read by and written to by media drive.
  • the storage media may include a computer-readable storage medium having particular computer software or data stored therein.
  • an information storage system may include other similar components for allowing computer programs or other instructions or data to be loaded into the computing system.
  • Such components may include, for example, a removable storage unit and an interface , such as a program cartridge and cartridge interface, a removable memory (for example, a flash memory or other removable memory module) and memory slot, and other removable storage units and interfaces that allow software and data to be transferred from the removable storage unit to computing system.
  • the computing system can also include a communications interface.
  • a communications interface can be used to allow software and data to be transferred between a computing system and external devices.
  • Examples of communications interfaces can include a modem, a network interface (such as an Ethernet or other NIC card), a communications port (such as for example, a universal serial bus (USB) port), a PCMCIA slot and card, etc.
  • Software and data transferred via a communications interface are in the form of signals which can be electronic, electromagnetic, and optical or other signals capable of being received by a communications interface medium.
  • 'computer program product' may be used generally to refer to tangible media such as, for example, a memory, storage device, or storage unit.
  • These and other forms of computer-readable media may store one or more instructions for use by the processor comprising the computer system to cause the processor to perform specified operations.
  • Such instructions generally referred to as 'computer program code' (which may be grouped in the form of computer programs or other groupings), when executed, enable the computing system to perform functions of embodiments of the present invention.
  • the code may directly cause a processor to perform specified operations, be compiled to do so, and/or be combined with other software, hardware, and/or firmware elements (e.g., libraries for performing standard functions) to do so.
  • the software may be stored in a computer-readable medium and loaded into computing system using, for example, removable storage drive.
  • a control module in this example, software instructions or executable computer program code, when executed by the processor in the computer system, causes a processor to perform the functions of the invention as described herein.
  • inventive concept can be applied to any circuit for performing signal processing functionality within a network element. It is further envisaged that, for example, a semiconductor manufacturer may employ the inventive concept in a design of a stand-alone device, such as a microcontroller of a digital signal processor (DSP), or application-specific integrated circuit
  • DSP digital signal processor
  • aspects of the invention may be implemented in any suitable form including hardware, software, firmware or any combination of these.
  • the invention may optionally be implemented, at least partly, as computer software running on one or more data processors and/or digital signal processors or configurable module components such as FPGA devices.
  • the elements and components of an embodiment of the invention may be physically, functionally and logically implemented in any suitable way. Indeed, the functionality may be implemented in a single unit, in a plurality of units or as part of other functional units.

Landscapes

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

Abstract

L'invention porte sur un élément de réseau, destiné à prendre en charge une communication dans au moins une cellule de communication d'un réseau de communication cellulaire (100), qui comprend un récepteur d'écoute de réseau (107) pour écouter des messages de diffusion de cellules voisines et une logique de traitement de signal associée (105) pour décoder les messages et en extraire des informations système/informations système de paquet. Les valeurs décodées peuvent être utilisées dans une opération de changement de cellule assisté par réseau (NACC) pour permettre à un équipement utilisateur (106) d'effectuer une re-sélection, d'une cellule source à une cellule cible. Avantageusement, l'agencement facilite des changements de cellule sans interruption de réception de données et sans qu'il ne soit nécessaire pour des opérateurs de réseau d'employer un mécanisme de gestion d'informations de réseau d'accès radio (RIM) complexe.
EP13739714.7A 2012-08-16 2013-07-23 Éléments de réseau, système de communication cellulaire et leurs procédés Withdrawn EP2885943A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1214622.1A GB2504978B (en) 2012-08-16 2012-08-16 Network elements, cellular communication system and methods therefor
PCT/EP2013/065488 WO2014026830A1 (fr) 2012-08-16 2013-07-23 Éléments de réseau, système de communication cellulaire et leurs procédés

Publications (1)

Publication Number Publication Date
EP2885943A1 true EP2885943A1 (fr) 2015-06-24

Family

ID=47016879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13739714.7A Withdrawn EP2885943A1 (fr) 2012-08-16 2013-07-23 Éléments de réseau, système de communication cellulaire et leurs procédés

Country Status (3)

Country Link
EP (1) EP2885943A1 (fr)
GB (1) GB2504978B (fr)
WO (1) WO2014026830A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6732928B2 (ja) 2016-03-30 2020-07-29 エルジー エレクトロニクス インコーポレイティド システム情報伝送方法及び基地局とシステム情報受信方法及びユーザ機器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080253332A1 (en) * 2007-03-22 2008-10-16 Nokia Corporation Selectively acquired system information
JP4740306B2 (ja) * 2008-10-31 2011-08-03 株式会社エヌ・ティ・ティ・ドコモ 移動局及び移動通信方法
GB2472792A (en) * 2009-08-17 2011-02-23 Nec Corp Measurement reporting in a mobile communications system
KR101724371B1 (ko) * 2010-05-28 2017-04-10 삼성전자주식회사 셀들이 중첩되는 무선통신 시스템에서 이동성을 지원하기 위한 장치 및 방법
WO2012065010A1 (fr) * 2010-11-11 2012-05-18 Qualcomm Incorporated Systèmes et procédés pour améliorer les performances du repli sur commutation de circuits

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014026830A1 *

Also Published As

Publication number Publication date
GB2504978B (en) 2014-11-12
GB201214622D0 (en) 2012-10-03
GB2504978A (en) 2014-02-19
WO2014026830A1 (fr) 2014-02-20

Similar Documents

Publication Publication Date Title
JP6181480B2 (ja) 限定加入者グループに対してインバウンドモビリティを提供するためのｐｃｉの混乱を解決する方法および装置
EP3108695B1 (fr) Éléments de réseau, système de communications sans fil et procédés associés
WO2014082282A1 (fr) Procédé et appareil de transfert dans un système hétérogène
US8971910B2 (en) Network element, cellular communication system and method therefor
US9544826B2 (en) Network elements, wireless communication system and methods therefor
KR20160063803A (ko) 무선 통신 시스템에서 메크로 기지국의 핸드오버방법 및 장치
WO2011065567A1 (fr) Terminal de communication mobile, dispositif de réseau, système de communication mobile et procédé de communication mobile
EP3062543B1 (fr) Éléments de réseau, système de communication sans fil et procédés associés
US20140066021A1 (en) Mobile communication method, radio base station and mobile management node
EP2896245B1 (fr) Éléments de réseau, système de communication cellulaire et procédés associés
EP2885943A1 (fr) Éléments de réseau, système de communication cellulaire et leurs procédés
EP2932757B1 (fr) Éléments de réseau, système de communication sans fil et leurs procédés
WO2014026831A1 (fr) Eléments de réseau, système de communication cellulaire et procédés associés
JP2011199774A (ja) 移動通信システム、ネットワーク装置及び移動通信方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150316

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20171114

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20191008