WO2014008787A1 - Procédé et équipement utilisateur pour distinguer des sources de signalisation - Google Patents

Procédé et équipement utilisateur pour distinguer des sources de signalisation Download PDF

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Publication number
WO2014008787A1
WO2014008787A1 PCT/CN2013/076424 CN2013076424W WO2014008787A1 WO 2014008787 A1 WO2014008787 A1 WO 2014008787A1 CN 2013076424 W CN2013076424 W CN 2013076424W WO 2014008787 A1 WO2014008787 A1 WO 2014008787A1
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WO
WIPO (PCT)
Prior art keywords
control plane
enb
plane signaling
signaling
base station
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PCT/CN2013/076424
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English (en)
Chinese (zh)
Inventor
梁靖
鲍炜
Original Assignee
电信科学技术研究院
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Publication of WO2014008787A1 publication Critical patent/WO2014008787A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H04W36/026—Multicasting of data during hand-off

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for distinguishing a signaling source and a user equipment. Background technique
  • the E-UTRAN is composed of an eNB (Evolved Base Station).
  • the MME Mobility Management Entity
  • the eNB completes the access network function and communicates with the UE (User Equipment) through the air interface.
  • the MME User Equipment
  • the S1-MME interface provides the UE with control plane services, including mobility management and bearer management functions.
  • the RRC/PDCP/RLC/MAC/PHY peer layer of the UE is located in the same eNB, and the NAS layer peer layer of the UE is located in the same eNB as the UE.
  • S1 is connected to the MME.
  • the PDCP and the RLC entity correspond to the DRB (Data Radio Bearer)/SRB (Signal Radio Bearer) 1/SRB2, and each DRB and SRB1 and SRB2 respectively correspond to one set.
  • PDCP and RLC entities; DRB/SRB1/SRB2 are aggregated at the MAC layer. Therefore, the UE will be composed of multiple sets of PDCP and RLC entities at the same time, but only one MAC layer and physical layer entity.
  • the SRB belongs to the control plane bearer, and the DRB belongs to the user plane bearer. As shown in FIG.
  • a macro cell provides a basic coverage
  • a local cell provides hotspot coverage
  • a data/signaling interface exists between the Local Cell and the Macro Cell (wired / Wireless interface)
  • the UE can work under the Macro eNB (macro base station) or Local eNB (local base station).
  • the UE connected to the Local eNB can often obtain a better service shield, such as obtaining a higher service rate and a higher shield link. Therefore, when the UE connected to the Macro eNB approaches the cell controlled by the Local eNB, it can switch to the Local eNB to obtain the service provided by the Local eNB; when the UE is away from the cell controlled by the Local eNB, it needs to switch to the cell controlled by the Macro eNB to Stay connected wirelessly. Due to the large number of local eNBs and small coverage, the UE needs to frequently switch between the cell controlled by the Macro eNB and the cell controlled by the Local eNB. Since the switching frequency and the number of times of the UE are greatly increased, the risk of communication interruption of the UE when performing handover is increased. Summary of the invention
  • the present invention provides a method for distinguishing a signaling source and a user equipment, which are used to solve the existing hierarchical structure of the network architecture of the E-UTRAN, because the switching frequency and the number of times of the UE are greatly increased, thereby increasing the UE in the The problem of the risk of communication interruption when switching.
  • a method of distinguishing signaling sources including:
  • the user equipment UE is connected to the control planes of the two base stations, and receives control plane signaling from any eNB.
  • the UE determines, according to the control plane signaling, identifier-related information for indicating the eNB, and according to the identifier.
  • the relevant information determines the e B of the source of the control plane signaling.
  • a determining unit configured to determine, according to the control plane signaling, identifier related information used to indicate the eNB, and determine e B of the control plane signaling source according to the identifier related information.
  • FIG. 3 is a schematic diagram of a control plane protocol stack between a UE and a network in the background art
  • FIG. 5 is a schematic diagram of a layered network deployment scenario in the background art
  • FIG. 6 is a network architecture of separating a user plane and a control plane according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of separation of a user plane and a control plane according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a control plane protocol stack of a local base station according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of a signaling source distinguishing method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a UE connecting to two base stations according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of another user equipment according to an embodiment of the present invention. detailed description
  • a network deployment mode in which the user plane and the control plane are separated is introduced.
  • the control plane and the user plane of the UE are both connected to the Macro eNB; when the UE moves to the overlapping area of the Macro eNB cell and the Local eNB cell
  • all or part of the UE user plane is transferred to the Local eNB to obtain a higher service transmission rate; the control plane connection remains in the Macro eNB to prevent the control plane connection handover failure from causing the UE to drop calls.
  • the Macro eNB is an LTE macro base station; the Local eNB is a Pico eNB (micro base station) or a Home eNB (home base station) or a relay (relay) device of the LTE.
  • the Local eNB is a Pico eNB (micro base station) or a Home eNB (home base station) or a relay (relay) device of the LTE.
  • the UE is simultaneously connected to two or more e Bs. As shown in FIG. 7, the UE is simultaneously connected to the Macro eNB and the Local eNB to obtain a control plane and a user plane connection, respectively. Specifically, the UE can be Part of the user plane is separated from the control plane, or all bearers of the user plane of the UE are separated from the control plane.
  • the Macro eNB has a complete user plane and control plane protocol stack, that is, a user plane protocol stack and a control plane protocol stack that are peered with the UE.
  • the Local eNB provides user plane data transmission functions for the UE, and has a complete user plane protocol stack.
  • the Local eNB should also have a partial RRC protocol function, and its control plane protocol stack is as shown in FIG. 8.
  • the Sub RRC (sub-RRC) layer indicates a protocol stack that only contains part of the RRC function, for example, only includes radio resource management.
  • the UE In the hierarchical network architecture in which the user plane and the control plane are separated, the UE is connected to the control plane of the two eNBs at the same time, and both eNBs can send radio resources related to the RRC signaling configuration to the UE, so that the UE can distinguish the signaling.
  • the source eNB is configured to ensure that the radio resource can be correctly configured, and the RRC message response is returned.
  • the embodiment of the present invention provides a signaling source distinguishing method.
  • the UE moves to an area jointly covered by the macro base station and the local base station as an example, that is, the UE establishes a control plane connection with the macro base station and the local base station at the same time.
  • the signaling source distinguishing method provided by the embodiment of the present invention mainly includes the following steps:
  • Step 901 The UE establishes a control plane connection with two base station eNBs at the same time, and receives control plane signaling from any eNB.
  • Step 902 The UE determines, according to the control plane signaling, the identifier related information used to indicate the eNB, and determines the e B of the control plane signaling source according to the identifier related information.
  • the identifier related information includes but is not limited to: a bearer identifier, a signaling identifier, or an eNB index identifier carried in the control plane signaling.
  • the identifier related information is a bearer identifier carried in the control plane signaling
  • the UE determines that the bearer identifier carried in the control plane signaling is a identifier of a dedicated SRB predefined for the local base station, and determines the control.
  • the surface signaling is derived from the local base station; otherwise, it is determined that the control plane signaling is derived from the macro base station.
  • a new signaling radio bearer SRB3 is defined for the network architecture in which the user plane and the control plane are separated, and the
  • SRB3 is dedicated to the local base station. As shown in Figure 10, when the UE establishes control plane signaling connection with the macro base station and the local base station, the macro base station transmits SRB1 and SRB2, and the local base station transmits SRB3.
  • the control plane signaling transmitted on the SRB3 is an RRC message related to the DRB, including but not limited to: an RRC message for bearer management, an RRC message for radio resource management, and an RRC message for configuring the SRB. One or more combinations.
  • a counter check (Counter check) message and a counter check response (Count Check Response) message for verifying the integrity of the count value (Count) of the DRB are transmitted on SRB3 dedicated to the local base station.
  • the RRC message for DRB related radio resource management may be a message configured for the physical layer, the MAC layer, the RLC, and the PDCP of the UE; the message used for configuring the SRB may be specifically used to add, modify, and Operations such as deletion can also be used to modify SRB3.
  • the configuration information related to the SRB3 may be pre-agreed by the UE and the local base station by using a protocol, or may be configured by the local base station.
  • the RRC message transmitted on the SRB3 may be an RRC message specified in the existing protocol, or may be a predefined RRC message agreed by the UE and the local base station.
  • the UE after receiving the RRC message sent by any eNB, the UE obtains the bearer identifier carried in the RRC message, and determines whether the bearer identifier is a dedicated bearer of the local base station, and determines the base station of the RRC message, and according to the RRC message pair.
  • the MAC layer and the physical layer entity of the UE corresponding to the determined base station are configured, and the PDCP and RLC parameters mapped to the bearer transmitted on the MAC layer entity are configured.
  • the identifier related information is a signaling identifier carried in the control plane signaling
  • the UE determines that the signaling identifier carried in the control plane signaling is an identifier of a dedicated RRC message predefined for the local base station, Determining that the control plane signaling originates from the local base station; otherwise, determining that the control plane signaling is derived from the macro base station.
  • one or more new RRC messages are defined, which are used exclusively for the local base station, and after the SRB1/SRB2 bearer is established between the UE and the local base station, as shown in FIG.
  • the dedicated RRC message is transmitted on the bearer.
  • the local base station is allowed to use the dedicated RRC message only when the UE establishes a control plane connection with the macro base station and the local base station at the same time.
  • the predefined RCC messages dedicated to the local base station include, but are not limited to: an RRC message for bearer management, an RRC message for radio resource management, and an RRC message for configuring the SRB.
  • the UE After receiving the RRC message, the UE acquires the signaling identifier carried in the RRC message, and determines whether the signaling identifier is a predefined identifier of the signaling dedicated to the local base station, and determines the eNB of the RRC message. And configuring, according to the RRC message, a MAC layer and a physical layer entity of the UE corresponding to the determined eNB, and configuring mapping to the PDCP and the RLC transmitted on the MAC layer entity.
  • the predefined RRC message dedicated to the local base station includes: an RRC message for bearer management operations such as addition, modification, and deletion of the DRB; for radio resource management operations such as physical layer, MAC layer, RLC, and PDCP configuration.
  • RRC message for SRB1/SRB2 related radio resource management.
  • the identifier related information is an eNB index identifier (eNB index), and the control plane signaling that carries the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling (such as physical layer downlink scheduling). Signaling or physical layer uplink scheduling signaling).
  • eNB index eNB index
  • the control plane signaling that carries the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling (such as physical layer downlink scheduling). Signaling or physical layer uplink scheduling signaling).
  • a new parameter is defined in an RRC message specified in an existing protocol: an eNB index identifier, the eNB index The identifier is used to distinguish between different e Bs.
  • the value of the parameter may be an enumeration type, for example, the parameter is ⁇ local, macro ⁇ , where local refers to the local base station, macro refers to the macro base station, and if the value of the parameter is ⁇ 0, 1 ⁇ refers to the macro base station. If the value of this parameter is ⁇ 1,0 ⁇ , it refers to the local base station; the value of this parameter can also be Boolean. For example, occupy one bit in the RRC message, and define the bit as A value of 0 refers to a macro base station, and this bit is 1 to refer to a local base station.
  • the UE After receiving the RRC message sent by the base station, the UE obtains the eNB index identifier from the predetermined location according to the agreement, determines the base station from which the RRC message is originated according to the eNB index identifier, and then, according to the RRC message, the eNB message corresponding to the determined base station.
  • the MAC layer and the physical layer of the UE are configured, and the PDCP and RLC parameters mapped to the bearers transmitted on the MAC layer entity are configured.
  • the UE when transmitting the RRC message, the UE adds an eNB index identifier to the RRC message according to the agreement to ensure that the transmitted RRC is received by the correct eNB.
  • the identifier related information may also be a MAC layer index identifier or a physical layer identifier I carried in the control plane signaling.
  • the UE determines the eNB of the control plane signaling source according to the MAC layer index identifier or the physical layer index identifier carried in the control plane signaling, which is specifically:
  • the UE determines the eNB corresponding to the physical layer index identifier carried in the control plane signaling according to the association relationship between the preset physical layer index and the eNB, and determines the eNB as the eNB of the control plane signaling source.
  • the physical resources or cell identifiers corresponding to the two sets of the MAC layer and the physical layer entity that are included in the UE are different, and each set of the MAC layer and the physical layer entity correspond to different base stations.
  • the association relationship between the MAC layer and the physical layer entity and the physical resource and the base station can be established, or the association relationship between the MAC layer and the physical layer entity and the cell identifier and the base station can be established, and the physical resource or the cell identifier is used as the Determining the identification information of the base station.
  • the UE determines the physical resource (such as the receiving frequency) corresponding to the received control plane signaling, and determines the eNB of the control plane signaling source according to the association relationship between the preset MAC layer and the physical layer entity and the two base stations and physical resources;
  • the UE determines the cell identifier corresponding to the received control plane signaling, and determines the eNB of the control plane signaling source according to the preset relationship between the MAC layer and the physical layer entity and the two base stations and the cell identifier.
  • the information combining the frequency point and the PCI may be used as the cell identifier.
  • an embodiment of the present invention further provides a user equipment that distinguishes a signaling source, and the user equipment
  • the user equipment For the implementation of the user equipment, refer to the implementation of the foregoing method.
  • the user equipment mainly includes the following units:
  • the receiving unit 1201 is configured to receive control plane signaling from any eNB.
  • the determining unit 1202 is configured to determine, according to the control plane signaling, identifier related information used to indicate the eNB, and determine e B of the control plane signaling source according to the identifier related information.
  • the identifier related information is a bearer identifier, a signaling identifier, or an eNB index identifier that is carried in the control plane signaling.
  • the determining unit is specifically for:
  • Determining that the control plane signaling originates from the local base station when determining that the bearer identifier carried in the control plane signaling is the identifier of the dedicated signaling radio bearer SRB predefined for the local base station; otherwise, determining that the control plane signaling is originated from the macro base station .
  • the determining unit is specifically for:
  • the control plane signaling is an identifier of a dedicated RRC message predefined for the local base station, it is determined that the control plane signaling is originated from the local base station; otherwise, the control plane signaling is determined to be derived from the macro base station.
  • control plane signaling carrying the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling.
  • the identifier related information is a MAC layer index identifier or a physical layer index identifier carried in the control plane signaling;
  • the determining unit is specifically used for:
  • the eNB corresponding to the physical layer identifier I carried in the control plane signaling is determined according to the preset relationship between the physical layer and the eNB, and the eNB is determined as the eNB of the control plane signaling source.
  • the determining unit is specifically configured to:
  • Determining the physical resource corresponding to the control plane signaling determining the eNB of the control plane signaling source according to the association relationship between the preset physical layer and the MAC layer entity and the base station and the physical resource, where the physical resources corresponding to each physical layer and the MAC layer entity Or the cell identifier is different;
  • the cell identifier corresponding to the control plane signaling is determined, and the eNB of the control plane signaling source is determined according to a preset relationship between the physical layer and the MAC layer entity and the two base stations and the cell identifier.
  • FIG. 13 is another user equipment according to an embodiment of the present invention, including:
  • a receiver 1301, configured to receive control plane signaling from any eNB;
  • the processor 1302 is configured to determine, according to the control plane signaling, identifier related information used to indicate the eNB, and according to the identifier phase The information determines the e B of the source of the control plane signaling.
  • the identifier related information is a bearer identifier, a signaling identifier, or an eNB index identifier that is carried in the control plane signaling.
  • the processor 1302 is specifically configured to:
  • Determining that the control plane signaling originates from the local base station when determining that the bearer identifier carried in the control plane signaling is the identifier of the dedicated signaling radio bearer SRB predefined for the local base station; otherwise, determining that the control plane signaling is originated from the macro base station .
  • the processor 1302 is specifically configured to:
  • the control plane signaling is an identifier of a dedicated RRC message predefined for the local base station, it is determined that the control plane signaling is originated from the local base station; otherwise, the control plane signaling is determined to be derived from the macro base station.
  • control plane signaling carrying the eNB index identifier may be RRC signaling, MAC layer signaling, or physical layer signaling.
  • the identifier related information is a MAC layer index identifier or a physical layer index identifier carried in the control plane signaling;
  • the processor 1302 is specifically configured to:
  • the eNB corresponding to the physical layer identifier I carried in the control plane signaling is determined according to the preset relationship between the physical layer and the eNB, and the eNB is determined as the eNB of the control plane signaling source.
  • the processor 1302 is specifically configured to:
  • Determining physical resources corresponding to the control plane signaling determining an eNB of the control plane signaling source according to the association relationship between the preset physical layer and the MAC layer entity and the base station and the physical resource, where the physical resources corresponding to each physical layer and the MAC layer entity Or the cell identifier is different;
  • the cell identifier corresponding to the control plane signaling is determined, and the eNB of the control plane signaling source is determined according to a preset relationship between the physical layer and the MAC layer entity and the two base stations and the cell identifier.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer usable storage modules (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • computer usable storage modules including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention porte sur un procédé et un équipement utilisateur (UE) pour distinguer des sources de signalisation, de manière à résoudre le problème de risques croissants d'interruptions de communication qui surviennent durant un transfert intercellulaire d'un UE étant donné que la fréquence et les temps de transfert intercellulaire d'un UE croissent sensiblement dans une structure de réseau en couches dans une architecture de réseau E-UTRAN existante. Le procédé comprend les opérations suivantes : un UE maintient une connexion de plan de commande avec deux eNB en même temps, et reçoit une signalisation de plan de commande en provenance d'un eNB aléatoire ; l'UE détermine des informations relatives à un identificateur servant à indiquer l'eNB conformément à la signalisation de plan de commande, et détermine l'eNB qui est la source de la signalisation de plan de commande conformément aux informations relatives à l'identificateur.
PCT/CN2013/076424 2012-07-11 2013-05-29 Procédé et équipement utilisateur pour distinguer des sources de signalisation WO2014008787A1 (fr)

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CN201210240589.3A CN103546898B (zh) 2012-07-11 2012-07-11 一种区分信令来源的方法及用户设备
CN201210240589.3 2012-07-11

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