WO2013026818A1 - Amélioration de réseau d'accès radio dans le traitement et l'acheminement de données de plan utilisateur entre points d'accès - Google Patents

Amélioration de réseau d'accès radio dans le traitement et l'acheminement de données de plan utilisateur entre points d'accès Download PDF

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Publication number
WO2013026818A1
WO2013026818A1 PCT/EP2012/066173 EP2012066173W WO2013026818A1 WO 2013026818 A1 WO2013026818 A1 WO 2013026818A1 EP 2012066173 W EP2012066173 W EP 2012066173W WO 2013026818 A1 WO2013026818 A1 WO 2013026818A1
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Prior art keywords
access points
group
network
user
coordinated multipoint
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PCT/EP2012/066173
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English (en)
Inventor
Michael Faerber
Simone Redana
Hanns Juergen Schwarzbauer
Richard Waldhauser
Wolfgang Zirwas
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Nokia Siemens Networks Oy
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Publication of WO2013026818A1 publication Critical patent/WO2013026818A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00692—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO]

Definitions

  • the present invention relates to an enhancement of a radio access network. More specifically, the present invention relates to measures (including methods, apparatuses and computer program products) for enhancing a radio access network .
  • the currently specified radio access networks are not suitable for (efficiently) applying such technigues of enhanced (radio) signal processing, which reguire a joint coordinated multipoint signal processing for a plurality of (radio) cells constituting a cooperation area.
  • enhanced (radio) signal processing which reguire a joint coordinated multipoint signal processing for a plurality of (radio) cells constituting a cooperation area.
  • the following approaches would exemplarily be conceivable in the field of an Enhanced Universal Terrestrial Radio Access Network (E-UTRAN) .
  • E-UTRAN Enhanced Universal Terrestrial Radio Access Network
  • FIG. 1 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of a basic E-UTRAN architecture.
  • a radio access network RAN
  • CN core network
  • S-GW serving gateway
  • MME mobility management entity
  • UE-specific u-plane traffic is typically transmitted from the S- GW towards the eNB serving the relevant UE only.
  • Using such "flat" E-UTRAN architecture for joint coordinated multipoint signal processing would reguire the S-GW to send UE-specific u-plane traffic not only to the eNB currently serving the relevant UE, but - by way of multicasting - in parallel to all eNBs in the cooperation area for enhanced radio
  • the eNBs in the cooperation area for enhanced radio processing are reguired to exchange
  • CSI channel state information
  • FIG. 2 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of an E-UTRAN architecture supporting relaying.
  • a radio access network is constituted by a cell being served by a donor eNB (DeNB), in which cell there are located seven relay cells each being served by a RN
  • a core network is constituted by a serving gateway (S-GW) for handling user plane traffic (u-plane) for the RAN and a mobility management entity (MME) for handling control plane (c-plane) traffic for the RAN.
  • S-GW serving gateway
  • u-plane user plane traffic
  • MME mobility management entity
  • the CN i.e. the S-GW and the MME
  • the DeNB which then passes on the UE-specific u-plane and c-plane traffic to the RNs in the cooperation area by way of multicasting.
  • the RNs in the cooperation area for enhanced radio processing are reguired to exchange
  • CSI channel state information
  • Still another conceivable approach could be based on the E- UTRAN architecture supporting home access, as defined in section 4.6 of 3GPP TS 36.300.
  • FIG. 3 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of an E-UTRAN architecture supporting home access (i.e. HeNBs) .
  • a radio access network RAN
  • HeNB-GW home gateway
  • a core network CN
  • S-GW serving gateway
  • MME mobility management entity
  • E-UTRAN architecture supporting home access i.e. HeNBs
  • HeNBs exhibiting a hierarchy
  • the MME sends UE-specific c-plane traffic only to the HeNB-GW which then passes on the UE-specific c-plane traffic to the HeNBs in the cooperation area by way of multicasting.
  • the HeNBs in the cooperation area for enhanced radio processing are reguired to exchange information for enabling joint
  • coordinated multipoint signal processing e.g. channel state information (CSI)
  • CSI channel state information
  • HeNBs home access
  • no measures for enabling joint coordinated multipoint signal processing in a cooperation area for enhanced radio processing are conventionally foreseen .
  • radio access networks are not suitable for (efficiently) applying such technigues of enhanced (radio) signal processing, which reguire a joint coordinated multipoint signal processing for a plurality of (radio) cells constituting a cooperation area.
  • an enhancement of a radio access network More specifically, by way of exemplary embodiments of the present invention, there are provided measures and mechanisms for enhancing a radio access network.
  • Such enhancement according to exemplary embodiments of the present invention relate to enabling a joint coordinated multipoint signal processing for a plurality of (radio) cells constituting a cooperation area.
  • Figure 1 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of a basic E-UTRAN architecture
  • Figure 2 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of an E-UTRAN architecture supporting relaying
  • Figure 3 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of an E-UTRAN architecture supporting home access
  • Figure 4 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of an enhanced radio access network architecture according to exemplary embodiments of the present invention
  • Figure 5 shows a signaling/process diagram illustrating various procedures according to exemplary embodiments of the present invention
  • Figure 6 shows a block diagram illustrating exemplary apparatuses according to exemplary embodiments of the present invention .
  • JCoMP joint coordinated multipoint signal processing
  • Figure 4 shows a schematic diagram of a multicasting scenario for a joint coordinated multipoint signal processing on the basis of an enhanced radio access network architecture according to exemplary embodiments of the present invention.
  • a radio access network is constituted by seven cells each being served by a base station (BS) and a central unit (CU), and a core network (CN) is constituted by a serving gateway (S-GW) for handling user plane traffic (u-plane) for the RAN (while a mobility management entity (MME) for handling control plane (c-plane) traffic for the RAN in the CN is not illustrated) .
  • the radio access network according to Figure 4 is for example an E-UTRAN.
  • the number of seven cells or base stations (BS) assumed to constitute a relevant cooperation area according to Figure 4 is a non-limiting example only, and the relevant cooperation area may be constituted by any number of cells or base stations (BS) .
  • the central unit represents a network element which provides a central functionality with respect to a
  • the central unit (CU) provides for a central functionality for enhanced radio processing in terms of a joint coordinated multipoint signal processing for a plurality of (neighboring) cells constituting a cooperation area. Accordingly, the central unit (CU) could also be referred to as joint cooperation element or the like.
  • the central unit (CU) is featured in that it does not serve a (radio) cell or users therein, as is the case e.g. for an eNB, DeNB or the like. Rather, the central unit (CU)
  • the central unit represents a network element or function which is considered by the CN (i.e. the S-GW) as a single base station (which could be regarded as representing a radio cell with zero radius), acting as a proxy between the CN (i.e. the S-GW) and the UE in each cell.
  • the central unit CU is featured in that it represents a network element or function which forms a sub-network of (radio) bases stations, i.e. (radio) access node,
  • the (radio) base stations i.e. (radio) access nodes, which are illustrated by BS in Figure 4, could comprise any one of eNBs, RNs (with single hop deployment and/or multi hop deployment), HeNBs (also referred to as femto nodes), pico nodes, and any combination of the mentioned nodes.
  • the central unit is capable of receiving UE-specific u- plane traffic for all BSs from the CN (i.e. the S-GW) , and (managing as well as) passing on the UE-specific u-plane traffic to the BSs in the cooperation area by way of
  • the central unit (CU) according to exemplary
  • embodiments of the present invention is capable of performing joint coordinated multipoint signal processing based thereon and providing the results and/or resulting instructions to the BSs in the cooperation area.
  • the central unit is capable of receiving user-related (coordination) information (i.e. information on behalf of all users served by the BSs), which is exemplarily illustrated as channel state information (CSI), from one or more of the BSs, and (managing as well as) passing on the user- related ( coordination ) information, which is exemplarily illustrated as channel state information (CSI), to the BSs.
  • user-related (coordination) information i.e. information on behalf of all users served by the BSs
  • CSI channel state information
  • CSI channel state information
  • the central unit (CU) is capable of performing joint coordinated multipoint signal processing based thereon and providing the results and/or resulting instructions to the BSs in the cooperation area.
  • joint coordinated multipoint signal processing at the central unit (CU) may be based on the UE- specific u-plane traffic and/or the user-related
  • the central unit (CU) is capable of performing joint coordinated multipoint signal processing for a
  • an enhanced radio-related processing could be performed.
  • enhanced radio processing as envisaged for and described in the ARTIST4G project of the European Commission could be performed by the central unit (CU) according to exemplary embodiments of the present invention.
  • This may include any advanced signal processing techniques, scheduling and cross layer design techniques and interference avoidance techniques (particularly but not exclusively those requiring cooperation with user plane exchange), as set forth in the ARTIST4G document "Definitions and architecture requirements for supporting interference avoidance techniques", Deliverable Dl .1.
  • exemplary embodiments of the present invention are specifically applicable for the requirements of the ARTIST4G project in that the central unit (CU) enables that u-plane information is available not only in a node serving a subject user, but also in neighboring nodes of a cooperation area, thereby facilitating a number of technigues such as to reduce and manage interference in LTE systems .
  • the central unit (CU) according to exemplary embodiments of the present invention represents a reguired node or element to have access to user plane traffic of other BSs in the cooperation area.
  • joint coordinated multipoint signal processing at the central unit (CU) may comprise radio interface related processing e.g. based on the user-related (coordination) information .
  • the central unit (CU) is capable of accomplishing a multicast capability of user (and control) data for efficient data distribution to enable cooperative schemes .
  • the central unit is capable of acting as any one of an element to manage and multicast user-related coordination (e.g. CSI) information, an element to manage and multicast user plane
  • CSI multicast user-related coordination
  • an element to manage and execute sub-network-specific SON algorithms an element to manage and execute sub-network-specific SON algorithms, a X2 interface concentrator to mesh BS and CU elements and to manage information distribution within the subnetwork, an element acting as virtual handover target cell, to allow the delivery of user-related data to the CU, an anchor element to manage moving relays or the like, and/or
  • - a local breakout interface for sub-networks, comprised by a multitude of (small) cells, which are private networks or the like .
  • an enhanced RAN (e.g. E-UTRAN) architecture may be based on an E-UTRAN architecture supporting relaying, as illustrated in Figure 2. Accordingly, such approach allows to introduce a central unit (CU) in a CN-transparent manner, assuming that the CN is supporting the relaying concept.
  • the DeNB could be considered as additionally providing the functionalities of the central unit (CU) realizing a central functionality for enhanced radio
  • the enhanced RAN (e.g. E-UTRAN) architecture exemplarily differs in that: the central unit (CU) formally represents a (radio) cell of its own with zero radius,
  • a connection between CU and BSs in the cooperation area is not using the Un interface (as introduced between DeNB and RN for the LTE relay case) but rather an appropriate network connection such as for example a fixed (wire- based) network, the BSs in the cooperation area need not connect to the CU using the phased approach as specified for RNs, and conseguently the CU needs not to host UE capabilities like the DeNB,
  • the SI interface may be proxied at the CU or passed transparently, e.g. switching at layer 2, and
  • a mediation between the two independent legs may be accomplished by certain interference avoidance technigues or the like) .
  • an enhanced RAN (e.g. E-UTRAN) architecture may be based on an E-UTRAN architecture supporting home access (i.e. HeNBs), as illustrated in Figure 3.
  • E-UTRAN architecture supporting home access i.e. HeNBs
  • HeNB-GW could be considered as additionally providing the functionalities of the central unit (CU) realizing a central functionality for enhanced radio processing in terms of a joint coordinated multipoint signal processing for a plurality of (neighboring) cells constituting a cooperation area, as outlined above.
  • the enhanced RAN (e.g. E-UTRAN) architecture exemplarily differs in that: the Sl-U interface passes via the HeNB-GW to allow processing for interference avoidance technigues or the like, and
  • HeNBs served by the HeNB-GW span more than one cell, whereas a HeNB is currently allowed to support a single cell only (although there are current to allow an HeNB to support multiple cells) .
  • a MME acts only on the control plane.
  • BSs in particular, eNBs
  • MMEs in different MME pools
  • the central unit may be realized as a stand-alone element or may be co-located with an element or node of the core network.
  • the CU function may also be integrated in a base station or radio access node (e.g. an eNB) or the like of the radio access network, assuming that the proxy function of the CU has a sufficient capacity or provisioning to serve the entire sub-network of the cooperation area.
  • a base station or radio access node e.g. an eNB
  • a stand-alone CU would allow to substitute elements like a femto gateway, a relay-specific proxy function, or the like by a generic network element or function, which on top allows any one of the management of CSI data or the like to enable cooperative schemes and the introduction of a multicast capability of user (and control) data for efficient data distribution to enable cooperative schemes.
  • a multicast capability in sub-networks such as those of cooperation areas allows innovative solutions to distribute user group oriented data with identical content, e.g. for a social network type of traffic emerging from popular services like Twitter,
  • Figure 5 shows a signaling/process diagram illustrating various procedures according to exemplary embodiments of the present invention.
  • embodiments of the present invention comprises a central unit (CU) being connected with a S-GW of the CN and three cells each being served by a base station (BS) .
  • CU central unit
  • BS base station
  • the number of three cells or base stations (BS) assumed to constitute a relevant cooperation area is a non-limiting example only, and the relevant cooperation area may be constituted by any number of cells or base stations (BS) .
  • exemplary embodiments of the present invention may comprise procedures relating to one or two (instead of all) of the distinct management procedures . Further, it is noted that the sequence of procedures
  • the coordination information may be received at the CU at the same time as or prior to the u-plane traffic, performing of the distinct management procedures may be different (as long as the relevant data is already received) , the distinct transmissions from the CU to the BSs may be different or combined in any conceivable manner, and so on.
  • exemplary embodiments of the present invention may comprise the following methods, procedures and functions.
  • Methods, procedures and functions, which are operable at the S-GW may comprise sending u-plane traffic for all BSs of a cooperation area to the CU.
  • the CU may provide a central functionality with respect to a cooperation area constituted by a plurality of (neighboring) cells, i.e. a central functionality for enhanced radio processing in terms of a joint coordinated multipoint signal processing for the plurality of
  • the CU may not serve a (radio) cell or users therein, but rather the CU may provide a network element or function which is considered by the CN as a single base station acting as a proxy between the CN and the UE in each cell, thus being transparent for the C .
  • Methods, procedures and functions, which are operable at the CU may comprise:
  • JCoMP JCoMP based on the received u-plane traffic for all BSs of the cooperation area and/or the
  • coordination information e.g. CSI
  • JCoMP JCoMP
  • Methods, procedures and functions, which are operable at any one of the BSs of a cooperation area, may comprise:
  • coordination information e.g. CSI
  • CU and/or receiving (managed) coordination information (e.g. CSI) for the BS from the CU, and/or receiving the result of joint coordinated multipoint signal processing (JCoMP) for the BS (e.g. including one or more instructions or data) from the CU, and/or applying any one of the received data (including u-plane traffic and/or coordination information and/or JCoMP result) accordingly.
  • managed coordination information e.g. CSI
  • JCoMP joint coordinated multipoint signal processing
  • the solid line blocks are basically configured to perform respective operations as described above.
  • the entirety of solid line blocks are basically configured to perform the methods and operations as described above, respectively.
  • the individual blocks are meant to illustrate respective functional blocks implementing a respective function, process or procedure, respectively.
  • Such functional blocks are implementation-independent, i.e. may be implemented by means of any kind of hardware or software, respectively.
  • the arrows and lines interconnecting individual blocks are meant to illustrate an operational coupling there-between, which may be a physical and/or logical coupling, which on the one hand is implementation-independent (e.g. wired or wireless) and on the other hand may also comprise an arbitrary number of intermediary functional entities not shown.
  • the direction of arrow is meant to illustrate the direction in which certain operations are performed and/or the direction in which certain data is transferred.
  • memories are provided for storing programs or program instructions for controlling the individual functional entities to operate as described herein.
  • Figure 6 shows a block diagram illustrating exemplary apparatuses according to exemplary embodiments of the present invention .
  • the thus described apparatuses 10 to 30 are suitable for use in practicing the exemplary embodiments of the present invention, as described herein.
  • the thus described apparatus 10 may represent a (part of a) central unit, as described above.
  • the thus described apparatus 20 may represent a (part of a) base station, as described above.
  • the thus described apparatus 30 may represent a (part of a) serving gateway or a corresponding core network element or node, as described above.
  • a central unit 10 comprises a
  • a base station 20 which is connected by a bus 14 or the like, a base station 20
  • a serving gateway 30 or the like comprises a processor 31, a memory 32, and an interface 33, which are connected by a bus 34 or the like.
  • the central unit is connected to the serving gateway 30 or the like through a link or connection 200, and the central unit is connected to one or more base station 20 of a cooperation area through a link or connection 100.
  • the memories 12, 22 and 32 may store respective programs assumed to include program instructions that, when executed by the associated processors 11, 21 and 31, enable the respective electronic device or apparatus to operate in accordance with the exemplary embodiments of the present invention.
  • the processors 11, 21 and 31 and/or the interfaces 13, 23 and 33 may also include a modem or the like to facilitate communication over the (hardwire or wireless) links 100 and 200, respectively.
  • the interfaces 13, 23 and 33 may include a suitable transceiver coupled to one or more antennas or communication means for (hardwire or wireless) communications with the linked or connected device (s), respectively.
  • the interfaces 13, 23 and 33 are generally configured to communicate with another apparatus, i.e. the interface thereof.
  • the respective devices /apparatuses may represent means for performing respective operations and/or exhibiting respective functionalities, and/or the respective devices (and/or parts thereof) may have functions for performing respective operations and/or exhibiting respective functionalities .
  • exemplary embodiments of the present invention may comprise the following structural/functional arrangements and
  • the respective apparatus may comprise at least one interface configured for communication with at least another apparatus, at least one memory
  • the S-GW may be configured (or may comprise means for functioning or comprise processor functionalities) to send u- plane traffic for all BSs of a cooperation area to the CU .
  • the CU may be configured to provide a central functionality with respect to a cooperation area constituted by a plurality of (neighboring) cells, i.e. a central functionality for enhanced radio processing in terms of a joint coordinated multipoint signal processing for the plurality of (neighboring) cells constituting the cooperation area.
  • the CU may be configured to not serve a
  • the CU may be configured to provide a network element or function which is considered by the CN as a single base station acting as a proxy between the CN and the UE in each cell, thus being transparent for the C .
  • the CU may be configured (or may comprise means for
  • processor functionalities to receive u-plane traffic for all BSs of a cooperation area from the S-GW, and/or receive coordination information (e.g. CSI) of one more of the BSs of the cooperation area from the respective BS, respectively, and/or perform management (i.e. managing) the received u-plane traffic for all BSs of the cooperation area, and transmit the (managed) u-plane traffic for all BSs to the respective BS of the BSs of the cooperation area, respectively, and/or
  • coordination information e.g. CSI
  • management i.e. managing
  • coordination information e.g. CSI
  • (managed) coordination information e.g. CSI
  • JCoMP joint coordinated multipoint signal processing
  • X2 interface concentration acting as virtual handover target cell, acting as an anchor element to manage moving relays or the like, and/or acting as a local breakout interface for sub-networks .
  • Any one of the BSs of a cooperation area may be configured (or may comprise means for functioning or comprise processor functionalities) to transmit coordination information (e.g. CSI) of the BS to the CU, and/or receive (managed) u-plane traffic for the BS from the CU, and/or receive (managed) coordination information (e.g. CSI) for the BS from the CU, and/or - receive the result of joint coordinated multipoint
  • coordination information e.g. CSI
  • CSI coordination information of the BS to the CU
  • JCoMP signal processing for the BS (e.g. including one or more instructions or data) from the CU, and/or apply any one of the received data (including u-plane traffic and/or coordination information and/or JCoMP result) accordingly.
  • JCoMP signal processing
  • the processor 11 or 21 or 31, the memory 12 or 22 or 32 and the interface 13 or 23 or 33 may be implemented as individual modules, chipsets or the like, or one or more of them can be implemented as a common module, chipset or the like, respectively.
  • a system may comprise any conceivable combination of the thus depicted devices/apparatuses and other network elements, which are configured to cooperate as described above .
  • respective functional blocks or elements according to above-described aspects can be implemented by any known means, either in hardware and/or software, respectively, if it is only adapted to perform the described functions of the respective parts.
  • the mentioned method steps can be realized in individual functional blocks or by individual devices, or one or more of the method steps can be realized in a single functional block or by a single device .
  • any method step is suitable to be implemented as software or by hardware without changing the idea of the present invention.
  • Such software may be software code independent and can be specified using any known or future developed programming language, such as e.g. Java, C++, C, and Assembler, as long as the functionality defined by the method steps is preserved.
  • Such hardware may be hardware type independent and can be implemented using any known or future developed hardware technology or any hybrids of these, such as MOS (Metal Oxide Semiconductor), CMOS (Complementary MOS), BiMOS (Bipolar MOS), BiCMOS (Bipolar CMOS), ECL (Emitter Coupled Logic), TTL (Transistor-Transistor Logic), etc., using for example ASIC (Application Specific IC (Integrated Circuit)) components, FPGA (Field-programmable Gate Arrays) components, CPLD (Complex Programmable Logic Device)
  • a device/apparatus may be represented by a semiconductor chip, a chipset, or a (hardware) module comprising such chip or chipset; this, however, does not exclude the possibility that a functionality of a device/apparatus or module, instead of being hardware implemented, be implemented as software in a (software) module such as a computer program or a computer program product comprising executable software code portions for execution/being run on a processor.
  • a device may be regarded as a device/apparatus or as an assembly of more than one device/apparatus, whether functionally in cooperation with each other or functionally independently of each other but in a same device housing, for example.
  • Apparatuses and/or means or parts thereof can be implemented as individual devices, but this does not exclude that they may be implemented in a distributed fashion throughout the system, as long as the functionality of the device is preserved. Such and similar principles are to be considered as known to a skilled person.
  • Software in the sense of the present description comprises software code as such comprising code means or portions or a computer program or a computer program product for performing the respective functions, as well as software (or a computer program or a computer program product) embodied on a tangible medium such as a computer-readable (storage) medium having stored thereon a respective data structure or code
  • the present invention also covers any conceivable combination of method steps and operations described above, and any conceivable combination of nodes, apparatuses, modules or elements described above, as long as the above-described concepts of methodology and structural arrangement are applicable .
  • the present invention and/or exemplary embodiments thereof provide measures for an enhancement of a radio access network.
  • measures may exemplarily comprise providing an enhanced RAN (e.g. E-UTRAN) architecture including a central functionality with respect to a
  • cooperation area constituted by a plurality of (neighboring) cell
  • central functionality may enable enhanced radio processing in terms of a joint coordinated multipoint signal processing for the plurality of (neighboring) cells constituting the cooperation area, and wherein such central functionality may represent a core network transparent proxy function between the core network and a user in each cell.
  • E-UTRAN Enhanced Universal Terrestrial Radio Access Network eNB evolved Node B (E-UTRAN base station)

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention porte sur des mesures permettant une amélioration d'un réseau d'accès radio (RAN). Ces mesures peuvent consister à titre d'exemple à utiliser une architecture RAN améliorée (par exemple, E-UTRAN) comprenant une fonctionnalité centrale par rapport à une zone de coopération constituée par une pluralité de cellules (voisines), cette fonctionnalité centrale pouvant permettre un traitement radio amélioré en termes d'un traitement de signal multipoint coordonné conjoint pour la pluralité de cellules (voisines) constituant la zone de coopération, et cette fonctionnalité centrale pouvant représenter une fonction mandataire transparente de réseau centrale entre un réseau centrale et un utilisateur dans chaque cellule.
PCT/EP2012/066173 2011-08-24 2012-08-20 Amélioration de réseau d'accès radio dans le traitement et l'acheminement de données de plan utilisateur entre points d'accès WO2013026818A1 (fr)

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