WO2015021597A1 - Délestage de trafic dans des systèmes de petite cellule - Google Patents

Délestage de trafic dans des systèmes de petite cellule Download PDF

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Publication number
WO2015021597A1
WO2015021597A1 PCT/CN2013/081375 CN2013081375W WO2015021597A1 WO 2015021597 A1 WO2015021597 A1 WO 2015021597A1 CN 2013081375 W CN2013081375 W CN 2013081375W WO 2015021597 A1 WO2015021597 A1 WO 2015021597A1
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WO
WIPO (PCT)
Prior art keywords
request message
gateway
identifier
setup request
communication
Prior art date
Application number
PCT/CN2013/081375
Other languages
English (en)
Inventor
Xiang Xu
Yixue Lei
Tsunehiko Chiba
Original Assignee
Nokia Siemens Networks Oy
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 Nokia Siemens Networks Oy filed Critical Nokia Siemens Networks Oy
Priority to PCT/CN2013/081375 priority Critical patent/WO2015021597A1/fr
Publication of WO2015021597A1 publication Critical patent/WO2015021597A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • IP traffic offload is a method to offload traffic from a wireless communication system operator's core network (CN) to a defined IP network that is close to a point of attachment to the access point of a wireless transmit receive unit (WTRU).
  • CN wireless communication system operator's core network
  • WTRU wireless transmit receive unit
  • RAN split does not support local breakout using local IP access (LIPA) or SIPTO with the local gateway (L-GW) located in local area.
  • LIPA local IP access
  • SIPTO@LN SIPTO at local network
  • SIPTO@LN SIPTO@LN
  • Figure 6 shows a schematic diagram of an example of a system environment with signaling variants/interfaces
  • Figure 7 shows a schematic diagram of an example of a system environment with signaling variants/interfaces
  • Figure 8 shows a schematic diagram of an example of a system environment with signaling variants/interfaces according to exemplary embodiments of the present invention
  • Figure 13 shows a schematic diagram of signaling sequences according to exemplary embodiments of the present invention
  • Figure 14 shows a schematic diagram of signaling sequences according to exemplary embodiments of the present invention
  • the following description of the present invention and its embodiments mainly refers to specifications being used as non-limiting examples for certain exemplary network configurations and deployments. Namely, the present invention and its embodiments are mainly described in relation to 3 rd Generation Partnership Project (3GPP) specifications being used as non-limiting examples for certain exemplary network configurations and deployments.
  • 3GPP 3 rd Generation Partnership Project
  • the description of exemplary embodiments given herein specifically refers to terminology which is directly related thereto. Such terminology is only used in the context of the presented non-limiting examples, and does naturally not limit the invention in any way. Rather, any other communication or communication related system deployment, etc. may also be utilized as long as compliant with the features described herein.
  • the main drawback of some backhaul alternatives may be the potential increase in backhaul capacity requirements between the MeNB and the first intermediate router towards the S-GW.
  • local IP breakout could be considered in addition (actually to any alternative) to provide a backhaul off-loading option.
  • Figure 5 illustrating a local IP breakout as an add-on feature in small cell eNBs
  • some traffic can optionally be offloaded by SeNB directly without user plane traversing via the mobile operator's transport network at all.
  • added functionality is needed for local IP breakout bearer management. This requires specifying some additional functions in MeNB, SeNB and UEs.
  • An L-GW is actually an evolved packet core (EPC) node, i.e., a simplified PDN gateway (P-GW) that is controlled via the mobility management entity (MME) and S-GW by using the S5 interface.
  • EPC evolved packet core
  • P-GW PDN gateway
  • MME mobility management entity
  • S-GW S-GW
  • S5 interface S5 interface.
  • LIPA and SIPTO@LN operates by using a secondary packet data network (PDN) connection via an L-GW; and the "primary" PDN connection for the default evolved packet system (EPS) bearer services UE is using simultaneously a P-GW located in the EPC.
  • PDN packet data network
  • SIPTO@LN can be applied both with the HeNBs and with the ordinary (pico, macro) eNBs. Applicability of SIPTO@LN can be divided into at least two cases:
  • Case 1 - SIPTO@LN using L-GW collocated in the (H)eNB One possibility is shown in Figure 6 (illustrating SIPTO@LN with co-located L-GW for small cells).
  • the co-located L-GW is placed in the serving MeNB, i.e., the local breakout point is at the master eNB site.
  • the SeNB When the SeNB is deployed in local network, the offloaded traffic has to be sent back and forth between the local network (SeNB), and master eNB, e.g. the uplink traffic is first sent from local network (i.e. SeNB) to MeNB, then from L-GW to local network. This adds more transmission delay and poses higher bandwidth requirement on the backhaul between the local network and MeNB.
  • each SeNB co-located L-GW would require termination of the S5 interface from the EPC, which results in that numerous SeNB/L-GWs become exposed to the EPC even if there is a single S1-MME in the MeNB.
  • S-GW/L-GW placed near the MeNB site in the operator domain.
  • an architecture/solution is provided to enable local breakout in small cell environment.
  • exemplary embodiments of the present invention may impact 3GPP stage 2 architecture (TS 36.300) and RAN protocols (new specifications for Xn and S5').
  • traffic offloading at SeNB is enabled while exposing SeNB to the CN is avoided (i.e. introducing direct interfaces between SeNB and the CN is avoided).
  • Those measures according to exemplary embodiments of the present invention in general, comprise an architecture with distributed local gateway functionalities in MeNB and SeNB consisting of L-GW functionality collocated in SeNB responsible for offload user data (i.e. breakout to local network) and L-GW functionality collocated in MeNB responsible for communicating with core network.
  • the L-GW functionality collocated in MeNB appears as SGW to L-GW functionality collocated in SeNB, and appears as P-GW to the S-GW functionality in the core network.
  • the SeNB informs the MeNB about the information of L-GW collocated in the SeNB.
  • the L-GW functionality in MeNB allocates a tunnel endpoint identifier (TEID, or GRE key) to be used as Correlation ID on behalf L-GW functionality in SeNB.
  • TEID tunnel endpoint identifier
  • L-GW functionality in MeNB determines the target L-GW collocated in SeNB based on the correlation ID received from the core network, the information of target SeNB, and the information of the L-GW collocated in the target SeNB.
  • L-GW functionality in SeNB forward the downlink (DL) packet to L-GW functionality in MeNB to trigger the network initiated service request for an IDLE UE.
  • Figure 1 is a block diagram illustrating an apparatus in a distributed gateway disposal of a first gateway associated with a first base station in contact with a core network and a second gateway associated with a second base station in contact with a local network according to exemplary embodiments of the present invention.
  • the apparatus may be an access node 10 such as a base station (in particular a master eNB) comprising a providing means 1 1 , an allocating means 12 and a communication means 13.
  • the providing means 1 1 provides functionality for at least communication with a core network for both control plane and user plane.
  • the allocating means 12 allocates an endpoint identifier for uplink tunnel to a communication endpoint.
  • a procedure according to exemplary embodiments of the present invention comprises an operation of providing (S31 ) functionality for at least communication with a core network for both control plane and user plane, an operation of allocating (S32) an endpoint identifier for uplink tunnel to a communication endpoint, and an operation of transmitting (S33) (to said second gateway) a create session request message comprising said identifier, and an operation of receiving (S34) a downlink packet from another communication endpoint (from said second gateway).
  • an exemplary method according to exemplary embodiments of the present invention may comprise an operation of receiving (from said second gateway) a first packet of a sequence of downlink data, and an operation of forwarding said first packet to said core network.
  • said method may be utilized in data traffic offload scenario
  • said correlation identifier may be a tunnel endpoint identifier TEID, or generic routing encapsulation GRE key
  • said first and second endpoint identifier may be a tunnel endpoint identifier TEID or generic routing encapsulation GRE key
  • said accessibility information may be an internet protocol address
  • said bearer setup request message may be an evolved radio access bearer E-RAB setup request message, or Initial Context Setup message.
  • FIG 2 is a block diagram illustrating an apparatus in a distributed gateway disposal of a first gateway associated with a first base station in contact with a core network and a second gateway associated with a second base station in contact with a local network according to exemplary embodiments of the present invention.
  • the apparatus may be an access node 20 such as a base station (in particular a secondary eNB) comprising a providing means 21 and a communication means 22.
  • the providing means 21 provides functionality for at least communication with a local network.
  • the communication means 22 receives a create session request message including a correlation identifier, and forwards the downlink packet.
  • Figure 4 is a schematic diagram of a procedure according to exemplary embodiments of the present invention.
  • an exemplary method according to exemplary embodiments of the present invention may comprise an operation of transmitting (to said eNB collocated with the first gateway) a setup request message comprising accessibility information to said provided functionality.
  • an exemplary method according to exemplary embodiments of the present invention may comprise an operation of receiving a first packet of a sequence of downlink data from said local network without active data connection for an addressee of said first packet, and forwarding (to said first gateway) said first packet to functionality for at least communication with a core network.
  • said method may be utilized in data traffic offload scenario
  • said correlation identifier may be a tunnel endpoint identifier TEID or generic routing encapsulation GRE key
  • said first endpoint identifier may be a tunnel endpoint identifier TEID, or generic routing encapsulation GRE key
  • said accessibility information may be an internet protocol address
  • said bearer setup request message may be an evolved radio access bearer E-RAB setup request message, or Initial Context Setup Request message.
  • ML-GW which is the L-GW functionality collocated with MeNB comprises the S5 interface to SGW.
  • the ML-GW appears to SGW as a PGW, and appears to SL-GW as a SGW.
  • Figure 9 shows a schematic diagram of signaling sequences according to exemplary embodiments of the present invention.
  • exemplary signaling sequences according to embodiments of the present invention regarding offload packet data network (PDN) connection establishment for single-radio UE are illustrated.
  • PDN packet data network
  • G5-based S5/S5' interface GTP
  • GRE key is used instead of TEID.
  • Step 0 in Figure 9 illustrates that, during the Xn setup procedure, SeNB informs MeNB about the IP address of SL-GW. MeNB maintains the information ⁇ SeNB's ID, IP adr of
  • Step 1 of Figure 9 a UE initiates PDN connection request.
  • RRC radio resource control
  • SeNB sends Xn Initial UE Message to MeNB.
  • MeNB sends S1 Initial UE Message including the IP address of ML-GW, i.e. "adr2".
  • Step 4 of Figure 9 is shown how MME initiates a create session request (Create Session Req) procedure.
  • Step 5 of Figure 9 UE's SGW sends Create Session Request message to ML-GW.
  • Step 6 of Figure 9 ML-GW allocates an unused tunnel endpoint identifier, e.g. TEID#1 , and includes this TEID in Create Session Rsp (response) message to SGW. ML-GW does not initiate the Create Session procedure to SL-GW until it knows the target SL-GW (see Step 8)
  • MME sends evolved radio access bearer (E-RAB) Setup Req (request) message, or Initial Context Setup Request message to eNB.
  • the message includes the correlation ID setting to TEID#1.
  • E-RAB Setup Req message, or Initial Context Setup Request message including a correlation ID set to a previously allocated TEID (Step 6)
  • MeNB knows that this is related to the offload PDN connection setup.
  • the ML-GW then initiates Create Session procedure to SL-GW.
  • the target SL-GW is determined based on the ID or IP address of target SeNB and the information received in Step 0 (i.e. "adrl ").
  • Step 9 of Figure 9 the MeNB initiates the Create Session Req message including TEID#1.
  • SL-GW uses the received TEID#1 for UL TEID which is used later to receive the offloaded UL data transmitted from the SeNB.
  • Step 10 of Figure 9 the SL-GW sends Create Session Response to ML-GW.
  • Steps 1 1 -15 of Figure 9 is illustrated how MeNB sends Xn E-RAB Setup Req message, or Initial Context Setup Request message including the correlation ID set to TEID#1 to SeNB, and how SeNB initiates RRC reconfiguration.
  • Step 21 of Figure 9 the offloaded UL data is sent directly from SL-GW to external packet data network.
  • Step 22 of Figure 9 the offloaded DL data is sent directly from SL-GW to UE via SeNB.
  • Figure 10 shows a schematic diagram of signaling sequences according to exemplary embodiments of the present invention.
  • exemplary signaling sequences according to embodiments of the present invention regarding offload PDN connection establishment for dual-radio UE are illustrated.
  • the main difference between the signaling sequences of offload PDN connection establishment for single-radio UE (according to Figure 9) and the signaling sequences of offload PDN connection establishment for dual-radio UE (according to Figure 10) is that UE sends the RRC message to MeNB no matter whether single RRC or dual RRC option is adopted.
  • Figure 1 1 shows a schematic diagram of an example of a system environment with signaling variants/interfaces according to exemplary embodiments of the present invention.
  • an exemplary offloaded user-plane path for single-radio UE according to embodiments of the present invention is illustrated.
  • Figure 12 shows a schematic diagram of an example of a system environment with signaling variants/interfaces according to exemplary embodiments of the present invention.
  • an exemplary offloaded user-plane path for dual-radio UE according to embodiments of the present invention is illustrated.
  • Figure 13 shows a schematic diagram of signaling sequences according to exemplary embodiments of the present invention.
  • exemplary signaling sequences according to embodiments of the present invention regarding network triggered service request for single-radio UE are illustrated (IDLE UE).
  • Step 2 of Figure 13 it is shown how the ML-GW appears to SL-GW as SGW, such that SL-GW forwards the first DL packet to ML-GW.
  • Step 3 of Figure 13 the ML-GW forwards the first DL packet to SGW.
  • Steps 19-21 of Figure 13 after the UE is connected, SGW forwards the first IP packet to MeNB, which is then sent to SeNB.
  • Step 22 of Figure 13 other DL packets are subsequently sent directly from SL-GW to SeNB.
  • the main difference between the signaling sequences of network triggered service request for single-radio UE (according to Figure 13) and the signaling sequences of network triggered service request for dual-radio UE (according to Figure 14) is that that RRC message is sent from MeNB to UE no matter whether single RRC or dual RRC option is adopted.
  • the solutions according to exemplary embodiments of the present invention require less changes to the small cell system. Further, no impact to CN is necessary. According to exemplary embodiments of the present invention, the small cell and the offload are kept invisible to CN, and existing 3GPP procedures are mostly reused.
  • the above-described procedures and functions may be implemented by respective functional elements, processors, or the like, as described below.
  • the network entity may comprise further units that are necessary for its respective operation. However, a description of these units is omitted in this specification.
  • the arrangement of the functional blocks of the devices is not construed to limit the invention, and the functions may be performed by one block or further split into sub-blocks.
  • the apparatus i.e. network entity (or some other means) is configured to perform some function
  • this is to be construed to be equivalent to a description stating that a (i.e. at least one) processor or corresponding circuitry, potentially in cooperation with computer program code stored in the memory of the respective apparatus, is configured to cause the apparatus to perform at least the thus mentioned function.
  • a (i.e. at least one) processor or corresponding circuitry potentially in cooperation with computer program code stored in the memory of the respective apparatus, is configured to cause the apparatus to perform at least the thus mentioned function.
  • function is to be construed to be equivalently implementable by specifically configured circuitry or means for performing the respective function (i.e. the expression "unit configured to” is construed to be equivalent to an expression such as "means for").
  • the apparatus (network node, access node) 10' (corresponding to the network node, access node 10) comprises a processor
  • the apparatus (network node, access node) 20' (corresponding to the network node, access node 20) comprises a processor 155, a memory 156 and an interface 157, which are connected by a bus 158 or the like., and the apparatuses may be connected via link 159, respectively.
  • the memory 152/156 may store respective programs assumed to include program instructions or computer program code that, when executed by the respective processor, enables the respective electronic device or apparatus to operate in accordance with the exemplary embodiments of the present invention.
  • processor or some other means
  • the processor is configured to perform some function
  • this is to be construed to be equivalent to a description stating that at least one processor, potentially in cooperation with computer program code stored in the memory of the respective apparatus, is configured to cause the apparatus to perform at least the thus mentioned function.
  • function is to be construed to be equivalently implementable by specifically configured means for performing the respective function (i.e. the expression "processor configured to [cause the apparatus to] perform xxx-ing” is construed to be equivalent to an expression such as "means for xxx-ing").
  • an apparatus representing the access node 10 comprises at least one processor 151 , at least one memory 152 including computer program code, and at least one interface 153 configured for communication with at least another apparatus.
  • the processor i.e. the at least one processor 151 , with the at least one memory 152 and the computer program code
  • the processor is configured to perform providing functionality for at least control communication with a core network (thus the apparatus comprising corresponding means for providing), to perform allocating a correlation identifier to a communication endpoint (thus the apparatus comprising corresponding means for allocating), and to perform transmitting a create session request message comprising said correlation identifier (thus the apparatus comprising corresponding means for transmitting).
  • an apparatus representing the access node 20 comprises at least one processor 155, at least one memory 156 including computer program code, and at least one interface 157 configured for communication with at least another apparatus.
  • the processor i.e. the at least one processor 155, with the at least one memory 156 and the computer program code
  • the processor is configured to perform providing functionality for at least data communication with a local network (thus the apparatus comprising corresponding means for providing), and to perform receiving a create session request message including a correlation identifier (thus the apparatus comprising corresponding means for receiving).
  • any method step is suitable to be implemented as software or by hardware without changing the idea of the embodiments and its modification in terms of the functionality implemented;
  • CMOS Complementary MOS
  • BiMOS Bipolar MOS
  • BiCMOS Bipolar CMOS
  • ECL emitter Coupled Logic
  • TTL Transistor-Transistor Logic
  • ASIC Application Specific IC
  • FPGA Field-programmable Gate Arrays
  • CPLD Complex Programmable Logic Device
  • DSP Digital Signal Processor
  • - devices, units or means e.g. the above-defined network entity or network register, or any one of their respective units/means
  • a device may be regarded as an apparatus or as an assembly of more than one apparatus, whether functionally in cooperation with each other or functionally independently of each other but in a same device housing, for example.
  • 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.
  • Devices and means can be implemented as individual devices, but this does not exclude that they are 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 means/portions or embodied in a signal or in a chip, potentially during processing thereof.
  • 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.
  • measures for traffic offload in small cell systems in a distributed gateway disposal of a first gateway associated with a first base station in contact with a core network and a second gateway associated with a second base station in contact with a local network.
  • Such measures exemplarily comprise, in said first gateway, providing functionality for at least control communication with said core network, allocating a correlation identifier to a communication endpoint, and transmitting a create session request message comprising said correlation identifier.
  • measures further exemplarily comprise, in said second gateway, providing functionality for at least communication with said local network, and receiving a create session request message including a correlation identifier.
  • SeNB secondary eNB secondary evolved NodeB
  • SIPTO Selected Internet Protocol traffic offload SIPTO@LN SIPTO at local network
  • WTRU wireless transmit receive unit

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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 des mesures pour le délestage de trafic dans des systèmes de petite cellule dans une élimination de passerelle distribuée d'une première passerelle associée à une première station de base en contact avec un réseau central et d'une seconde passerelle associée à une seconde station de base en contact avec un réseau local. De telles mesures données à titre d'exemple consistent, dans ladite première passerelle, à fournir une fonctionnalité pour au moins la communication avec ledit réseau principal, à attribuer un identifiant de corrélation à un point final de communication, et à transmettre un message de demande de création de session comprenant ledit identifiant de corrélation. De telles mesures données à titre d'exemple consistent en outre, dans ladite seconde passerelle, à fournir une fonctionnalité pour au moins la communication avec ledit réseau local, et à recevoir un message de demande de création de session comprenant un identifiant de corrélation.
PCT/CN2013/081375 2013-08-13 2013-08-13 Délestage de trafic dans des systèmes de petite cellule WO2015021597A1 (fr)

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WO2016050261A1 (fr) * 2014-09-29 2016-04-07 Nokia Solutions And Networks Oy Raccordement local dans une architecture de petites cellules
WO2016144383A1 (fr) * 2015-03-10 2016-09-15 Intel IP Corporation Appareil, système et procédé de déchargement de trafic d'un groupe de cellules secondaires (scg)
CN106162877A (zh) * 2015-04-22 2016-11-23 北京佰才邦技术有限公司 数据传输的方法和设备
US20160373987A1 (en) * 2014-03-13 2016-12-22 Interdigital Patent Holdings, Inc. Local Offload and Small Cell Architecture (SCA)
WO2017096531A1 (fr) * 2015-12-08 2017-06-15 Intel Corporation Commutateur de réseau défini par logiciel et nœud b évolué (enb) pour une connectivité à porteuses multiples

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CN102377831A (zh) * 2010-08-17 2012-03-14 中国移动通信集团公司 一种策略控制实体地址的获取方法、设备和系统
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CN102377831A (zh) * 2010-08-17 2012-03-14 中国移动通信集团公司 一种策略控制实体地址的获取方法、设备和系统
WO2012024990A1 (fr) * 2010-08-24 2012-03-01 中兴通讯股份有限公司 Procédé et système d'obtention d'informations d'élément de réseau
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Cited By (11)

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US20160373987A1 (en) * 2014-03-13 2016-12-22 Interdigital Patent Holdings, Inc. Local Offload and Small Cell Architecture (SCA)
US10182382B2 (en) * 2014-03-13 2019-01-15 Interdigital Patent Holdings, Inc. Local offload and small cell architecture (SCA)
WO2016050261A1 (fr) * 2014-09-29 2016-04-07 Nokia Solutions And Networks Oy Raccordement local dans une architecture de petites cellules
US10390377B2 (en) 2014-09-29 2019-08-20 Nokia Solutions And Networks Oy Local breakout in small cell architecture
WO2016144383A1 (fr) * 2015-03-10 2016-09-15 Intel IP Corporation Appareil, système et procédé de déchargement de trafic d'un groupe de cellules secondaires (scg)
US20180049062A1 (en) * 2015-03-10 2018-02-15 Intel IP Corporation Apparatus, system and method of offloading traffic of a secondary cell group (scg)
US10555216B2 (en) 2015-03-10 2020-02-04 Intel IP Corporation Apparatus, system and method of offloading traffic of a secondary cell group (SCG)
US10932158B2 (en) 2015-03-10 2021-02-23 Apple Inc. Apparatus, system and method of offloading traffic of a secondary cell group (SCG)
CN106162877A (zh) * 2015-04-22 2016-11-23 北京佰才邦技术有限公司 数据传输的方法和设备
CN106162877B (zh) * 2015-04-22 2019-07-16 北京佰才邦技术有限公司 数据传输的方法和设备
WO2017096531A1 (fr) * 2015-12-08 2017-06-15 Intel Corporation Commutateur de réseau défini par logiciel et nœud b évolué (enb) pour une connectivité à porteuses multiples

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