KR20160048647A - Methods for transmitting and receiving a data and Apparatuses thereof - Google Patents
Methods for transmitting and receiving a data and Apparatuses thereof Download PDFInfo
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- KR20160048647A KR20160048647A KR1020150136064A KR20150136064A KR20160048647A KR 20160048647 A KR20160048647 A KR 20160048647A KR 1020150136064 A KR1020150136064 A KR 1020150136064A KR 20150136064 A KR20150136064 A KR 20150136064A KR 20160048647 A KR20160048647 A KR 20160048647A
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- H04W72/042—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
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- 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
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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Abstract
The present invention relates to a technique for transmitting and receiving user plane data by adding a WLAN carrier to an E-UTRAN carrier at a Radio Access Network (RAN) level. More particularly, the present invention relates to a method and apparatus for a control plane procedure for transmitting or receiving specific user plane data over a WLAN carrier between a base station and a terminal. In particular,
Description
The present invention relates to a technique for transmitting and receiving user plane data by adding a WLAN carrier to an E-UTRAN carrier at a Radio Access Network (RAN) level. In particular, the present invention relates to a method and apparatus for a control plane procedure for transmitting or receiving specific user plane data over a WLAN carrier between a base station and a terminal.
As communications systems evolved, consumers, such as businesses and individuals, used a wide variety of wireless terminals. In a mobile communication system such as LTE (Long Term Evolution) and LTE-Advanced of the current 3GPP series, a high-speed and large-capacity communication system capable of transmitting and receiving various data such as video and wireless data outside a voice- It is required to develop a technique capable of transmitting large-capacity data in accordance with the above-described method. It is possible to efficiently transmit data using a plurality of cells in a method for transmitting a large amount of data.
However, there is a limit to providing a base station to a plurality of terminals that transmit large amount of data using limited frequency resources. In other words, securing a frequency resource that can be used exclusively by a specific service provider is costly.
On the other hand, license-exempt frequency bands that can not be used exclusively by specific operators or specific communication systems can be shared by multiple operators or communication systems. For example, WLAN technology, represented by Wi-Fi, provides data transmission and reception services using frequency resources of the license-exempt band.
Accordingly, a mobile communication system is also required to study a technique of transmitting / receiving data to / from a terminal using a corresponding Wi-Fi AP (Access Point).
SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a concrete method and apparatus for providing a control plane procedure for transmitting and receiving data belonging to a specific bearer using a WLAN carrier.
Another object of the present invention is to provide a method and apparatus capable of effectively controlling a WLAN carrier in accordance with movement of a terminal to ensure efficient mobility even when the terminal moves.
According to another aspect of the present invention, there is provided a method for transmitting / receiving data to / from a mobile station, the method comprising: receiving WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier from a base station; Comprising the steps of: setting up a radio bearer group comprising one or more radio bearers to transmit and receive data via a WLAN carrier; and transmitting and receiving data of the radio bearer group via a WLAN carrier.
The method includes the steps of generating WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier, transmitting WLAN radio resource configuration dedicated information to the terminal, Wherein the WLAN radio resource configuration dedicated information includes information for setting the radio bearer group to transmit and receive data via the WLAN carrier, wherein the WLAN radio resource configuration dedicated information includes information for setting the radio bearer group to transmit and receive data via the WLAN carrier .
The present invention also provides a terminal for transmitting and receiving data, comprising: a receiving unit for receiving WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier from a base station; and one or more radio bearers And a transmitter for transmitting the data of the radio bearer group through the WLAN carrier. The present invention also provides a terminal apparatus comprising: a radio bearer group;
According to another aspect of the present invention, there is provided a base station for transmitting and receiving data, including: a controller for generating WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier; a transmitter for transmitting WLAN radio resource configuration dedicated information to the terminal; Wherein the WLAN radio resource configuration dedicated information includes information for setting the radio bearer group to transmit and receive data via the WLAN carrier, and a receiver for receiving data of the radio bearer group including the bearer through the WLAN carrier, to provide.
According to the present invention described above, it is possible to provide control plane configuration information for transmitting and receiving data belonging to a specific bearer by using a WLAN carrier.
In addition, according to the present invention, there is an effect that data transmitted and received through a WLAN carrier can be continuously serviced when a terminal moves.
1 is a diagram illustrating an example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
2 is a diagram showing another example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
3 is a diagram showing another example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
4 is a diagram showing another example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
5 is a diagram illustrating an example of a network configuration scenario for the present invention.
6 is a diagram exemplarily showing an AS-Config IE (Information Element) according to the prior art.
7 is a diagram for explaining a terminal operation according to an embodiment of the present invention.
8 is a view for explaining a base station operation according to another embodiment of the present invention.
9 is a diagram illustrating a terminal configuration according to another embodiment of the present invention.
10 is a diagram illustrating a base station configuration according to another embodiment of the present invention.
Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
Herein, the MTC terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement. In this specification, the MTC terminal may mean a terminal supporting low cost (or low complexity) and coverage enhancement. Alternatively, the MTC terminal may refer to a terminal defined in a specific category for supporting low cost (or low complexity) and / or coverage enhancement.
In other words, the MTC terminal may refer to a newly defined 3GPP Release 13 low cost (or low complexity) UE category / type for performing LTE-based MTC-related operations. Alternatively, the MTC terminal may support the enhanced coverage over the existing LTE coverage or the UE category / type defined in the existing 3GPP Release 12 or lower that supports the low power consumption, or the newly defined Release-13 low cost (or low complexity UE category / type.
The wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data and the like. A wireless communication system includes a user equipment (UE) and a base station (BS, or eNB). The user terminal in this specification is a comprehensive concept of a terminal in wireless communication. It is a comprehensive concept which means a mobile station (MS), a user terminal (UT), an SS (User Equipment) (Subscriber Station), a wireless device, and the like.
A base station or a cell generally refers to a station that communicates with a user terminal and includes a Node-B, an evolved Node-B (eNB), a sector, a Site, a BTS A base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell.
That is, the base station or the cell in this specification is interpreted as a comprehensive meaning indicating a partial region or function covered by BSC (Base Station Controller) in CDMA, NodeB in WCDMA, eNB in LTE or sector (site) And covers various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, and small cell communication range.
Since the various cells listed above exist in the base station controlling each cell, the base station can be interpreted into two meanings. i) the device itself providing a megacell, macrocell, microcell, picocell, femtocell, small cell in relation to the wireless region, or ii) indicating the wireless region itself. i indicate to the base station all devices that are controlled by the same entity or that interact to configure the wireless region as a collaboration. An eNB, an RRH, an antenna, an RU, an LPN, a point, a transmission / reception point, a transmission point, a reception point, and the like are exemplary embodiments of a base station according to a configuration method of a radio area. ii) may indicate to the base station the wireless region itself that is to receive or transmit signals from the perspective of the user terminal or from a neighboring base station.
Therefore, a base station is collectively referred to as a base station, collectively referred to as a megacell, macrocell, microcell, picocell, femtocell, small cell, RRH, antenna, RU, low power node do.
Herein, the user terminal and the base station are used in a broad sense as the two transmitting and receiving subjects used to implement the technical or technical idea described in this specification, and are not limited by a specific term or word. The user terminal and the base station are used in a broad sense as two (uplink or downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, and are not limited by a specific term or word. Here, an uplink (UL, or uplink) means a method of transmitting / receiving data to / from a base station by a user terminal, and a downlink (DL or downlink) .
There are no restrictions on multiple access schemes applied to wireless communication systems. Various multiple access schemes such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM- Can be used. An embodiment of the present invention can be applied to asynchronous wireless communication that evolves into LTE and LTE-advanced via GSM, WCDMA, and HSPA, and synchronous wireless communication that evolves into CDMA, CDMA-2000, and UMB. The present invention should not be construed as limited to or limited to a specific wireless communication field and should be construed as including all technical fields to which the idea of the present invention can be applied.
A TDD (Time Division Duplex) scheme in which uplink and downlink transmissions are transmitted using different time periods, or an FDD (Frequency Division Duplex) scheme in which they are transmitted using different frequencies can be used.
In systems such as LTE and LTE-Advanced, the uplink and downlink are configured on the basis of one carrier or carrier pair to form a standard. The uplink and the downlink are divided into a Physical Downlink Control Channel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel, a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control Channel (EPDCCH) Transmits control information through the same control channel, and is configured with data channels such as PDSCH (Physical Downlink Shared CHannel) and PUSCH (Physical Uplink Shared CHannel), and transmits data.
On the other hand, control information can also be transmitted using EPDCCH (enhanced PDCCH or extended PDCCH).
In this specification, a cell refers to a component carrier having a coverage of a signal transmitted from a transmission point or a transmission point or transmission / reception point of a signal transmitted from a transmission / reception point, and a transmission / reception point itself .
The wireless communication system to which the embodiments are applied may be a coordinated multi-point transmission / reception system (CoMP system) or a coordinated multi-point transmission / reception system in which two or more transmission / reception points cooperatively transmit signals. antenna transmission system, or a cooperative multi-cell communication system. A CoMP system may include at least two multipoint transmit and receive points and terminals.
The multi-point transmission / reception point includes a base station or a macro cell (hereinafter referred to as 'eNB'), and at least one mobile station having a high transmission power or a low transmission power in a macro cell area, Lt; / RTI >
Hereinafter, a downlink refers to a communication or communication path from a multipoint transmission / reception point to a terminal, and an uplink refers to a communication or communication path from a terminal to a multiple transmission / reception point. In the downlink, a transmitter may be a part of a multipoint transmission / reception point, and a receiver may be a part of a terminal. In the uplink, the transmitter may be a part of the terminal, and the receiver may be a part of multiple transmission / reception points.
Hereinafter, a situation in which a signal is transmitted / received through a channel such as PUCCH, PUSCH, PDCCH, EPDCCH, and PDSCH is expressed as 'PUCCH, PUSCH, PDCCH, EPDCCH and PDSCH are transmitted and received'.
In the following description, an indication that a PDCCH is transmitted or received or a signal is transmitted or received via a PDCCH may be used to mean transmitting or receiving an EPDCCH or transmitting or receiving a signal through an EPDCCH.
That is, the physical downlink control channel described below may mean a PDCCH, an EPDCCH, or a PDCCH and an EPDCCH.
Also, for convenience of description, EPDCCH, which is an embodiment of the present invention, may be applied to the portion described with PDCCH, and EPDCCH may be applied to the portion described with EPDCCH according to an embodiment of the present invention.
Meanwhile, the High Layer Signaling described below includes RRC signaling for transmitting RRC information including RRC parameters.
The eNB performs downlink transmission to the UEs. The eNB includes a physical downlink shared channel (PDSCH) as a main physical channel for unicast transmission, downlink control information such as scheduling required for reception of PDSCH, and uplink data channel A physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission in a Physical Uplink Shared Channel (PUSCH). Hereinafter, the transmission / reception of a signal through each channel will be described in a form in which the corresponding channel is transmitted / received.
3GPP / WLAN interworking technology provides RAN assisted WLAN interworking. The E-UTRAN may support terminal-based bidirectional traffic steering between the E-UTRAN and the WLAN for terminals in the RRC_IDLE and RRC_CONNECTED states.
The E-UTRAN provides assistance parameters to the terminal via broadcast signaling or dedicated RRC signaling. The RAN helper parameters may include at least one of an E-UTRAN signal strength threshold, a WLAN channel utilization threshold, a WLAN backhaul data rate threshold, a WLAN signal strength, and an Offload Preference Indicator. The E-UTRAN may also provide the terminal with a list of WLAN identifiers via broadcast signaling.
The terminal uses RAN helper parameters to evaluate access network selection and traffic steering rules. When the access network selection and traffic control rules are satisfied, the terminal indicates it to an access stratum (AS) upper layer.
When the UE applies the access network selection and traffic control rules, the UE performs traffic control in units of APN (granularity) between the E-UTRAN and the WLAN. In this way, the RAN assisted WLAN interworking function provides only a way of establishing and interworking E-UTRAN and WLAN in standalone manner.
However, the interworking function described above has a problem that the E-UTRAN and the WLAN are independently constructed and interlocked, and the base station can not control radio resources more tightly considering the radio state or mobility of the UE. Therefore, there is a growing need for a technology that allows tighter integration at the RAN level compared to Release 12 RAN assisted WLAN interworking. That is, when the UE transmits specific user plane data, the E-UTRAN adds a WLAN carrier in the RAN level as one carrier in the E-UTRAN in consideration of the radio state and mobility of the UE and transmits the E-UTRAN carrier and the WLAN carrier Can not be used at the same time.
The above-mentioned WLAN carrier refers to a radio resource of a WLAN, which means a WLAN radio link, a WLAN radio, a WLAN radio resource, or a WLAN radio network. Hereinafter, for convenience of understanding, a WLAN radio link, a WLAN radio, a WLAN radio resource, or a WLAN radio network is described as a WLAN carrier.
Further, in the case where the E-UTRAN adds a WLAN carrier at the RAN level to one carrier in the E-UTRAN to transmit user plane data through the E-UTRAN carrier and / or the WLAN carrier, (For example, split or routing) or interworking user plane data units on E-UTRAN Layer 2 in bearer units. In addition, when the UE transmits user plane data belonging to a specific bearer, in consideration of the radio state and mobility of the UE while maintaining the E-UTRAN carrier, the E-UTRAN transmits the WLAN carrier at the RAN level to the one Carrier, and could not be transmitted over the E-UTRAN carrier and / or the WLAN carrier.
In order for the E-UTRAN to add a WLAN carrier at the RAN level as one carrier in the E-UTRAN and transmit user plane data belonging to a particular bearer over the E-UTRAN carrier and / or the WLAN carrier, A method of separating (or splitting or routing) / merging or interlocking data units may be considered.
For example, it is possible to separately transmit data to be transmitted through the E-UTRAN carrier and / or data to be transmitted through the WLAN carrier from the PDCP parent entity, and to receive (or merge receive) the PDCP parent object with the peered PDCP parent object have. Or the data to be transmitted through the WLAN carrier in the PDCP upper entity may be interlocked and transmitted and the peered PDCP upper entity may be configured to receive the data. For another example, the PDCP entity may be configured to separately transmit data to be transmitted through the E-UTRAN carrier and / or data to be transmitted through the WLAN carrier, and to receive (or merge receive) the PDCP entity with the peered PDCP entity . Or the data to be transmitted through the WLAN carrier in the PDCP entity may be interlinked and configured to be received by the peered PDCP entity. For another example, the RLC entity may separately transmit data to be transmitted through the E-UTRAN carrier and / or data to be transmitted through the WLAN carrier, and the peered RLC entity may receive (or merge) the received data. Alternatively, the data to be transmitted through the WLAN carrier may be interlinked and transmitted from the RLC entity, and the peered RLC entity may be configured to receive the data.
However, in order for the E-UTRAN to add a WLAN carrier at the RAN level as one carrier in the E-UTRAN to initiate or terminate user plane data transmission belonging to a particular bearer over the E-UTRAN carrier and / or WLAN carrier, And a control plane procedure between terminals is required, but no procedure for this has been provided so far. Especially, when the terminal moves, it can not provide mobility or service continuity to the user plane data according to the terminal movement.
As described above, the E-UTRAN adds a WLAN carrier at the RAN level to one carrier in the E-UTRAN to initiate / initiate / terminate user plane data transmission belonging to a particular bearer over the E-UTRAN carrier and / The control plane procedure between the base station and the terminal for stopping is not defined. Especially, when the terminal moves, there is a problem that the service continuity for the user plane data can not be provided.
The present invention, which has been devised to solve such a problem, is that the E-UTRAN adds a WLAN carrier at the RAN level as one carrier in the E-UTRAN and transmits user plane data belonging to a specific bearer through the E-UTRAN carrier and / And to provide a control plane procedure between a base station and a terminal for starting / starting or ending / stopping the base station. Particularly, when a terminal moves, it aims to provide mobility effectively according to terminal movement.
The present invention may be provided in a scenario where a base station (eNodeB) and a WLAN termination are non-co-located. In a scenario where the base station (eNodeB) and the WLAN end are non-co-located, the base station and the WLAN termination can be constructed via non-ideal backhaul or near-ideal backhaul or ideal backhaul. Alternatively, the present invention may be provided in a scenario where a base station (eNodeB) and a WLAN terminal are co-located. The term WLAN in this context refers to a logical WLAN network node. For example, a WLAN AP or a WLAN AC. The WLAN termination may be a WLAN network node such as an existing WLAN AP or an existing WLAN AC, or may be a WLAN network node including an additional function for WLAN merging transmission to an existing WLAN AP or an existing WLAN AC. The WLAN termination may be implemented as an independent entity or as a functional entity contained in another entity. Hereinafter, the above-described WLAN termination will be described as a WLAN AP or an AP.
In order for the E-UTRAN to add a WLAN carrier to a terminal in the RAN level as one carrier in the E-UTRAN and transmit and receive user plane data using the E-UTRAN carrier and the WLAN carrier, . The addition of the WLAN carrier as one carrier by the E-UTRAN may conceptually mean that the UE and the base station construct an additional E-UTRAN cell by adding the function for the WLAN carrier.
The E-UTRAN adds the WLAN carrier to the terminal at the RAN level as one carrier in the E-UTRAN and transmits the user plane data in units of radio bearers via the E-UTRAN carrier and / or the WLAN carrier to the E-UTRAN layer 2 The user plane data unit may be split or routed or interworked to transmit user data.
For example, the PDCP upper entity may separately transmit data to be transmitted through the E-UTRAN carrier and data to be transmitted through the WLAN carrier, and receive (or merge receive) the PDCP upper entity with the peered PDCP upper entity. Or the data to be transmitted through the WLAN carrier in the PDCP upper entity may be interlinked and transmitted, and the upper PDCP entity may receive the data. As another example, the PDCP entity may separately transmit data to be transmitted through the E-UTRAN carrier and data to be transmitted through the WLAN carrier, and receive (or merge receive) the PDCP entity with the peered PDCP entity. Alternatively, the PDCP entity may interwork data to be transmitted via the WLAN carrier and receive it from the peered PDCP entity. As another example, the RLC entity may separate data to be transmitted through the E-UTRAN carrier and data to be transmitted through the WLAN carrier , And the peered RLC entity may receive (or merge receive) it. Alternatively, the RLC entity may interwork with the data to be transmitted through the WLAN carrier, and may receive the data from the peered RLC entity.
<Data transmission path>
Hereinafter, a scenario is described in which the E-UTRAN adds a WLAN carrier to a terminal in the RAN level as one carrier in the E-UTRAN to transmit and receive user plane data in units of radio bearers via the E-UTRAN carrier and / or the WLAN carrier . That is, uplink and downlink data transmission path scenarios will be described when data to be transmitted through the E-UTRAN carrier and / or data to be transmitted through the WLAN carrier are separated or interlinked in the PDCP layer to transmit user data. Hereinafter, for the sake of convenience, the PDCP layer separates or interlocks with the PDCP layer. However, the PDCP layer may be separated or coordinated at a layer other than the PDCP layer (for example, a PDCP upper layer or an RLC layer or PDCP sub- Interworking can similarly be applied, as the entity of the entity is changed from PDCP to another layer (for example, RLC or PDCP upper layer). Therefore, a method of separating or interworking in the E-UTRAN layer other than the PDCP is included in the scope of the present invention.
1 is a diagram illustrating an example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
Referring to FIG. 1, a
2 is a diagram showing another example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
Referring to FIG. 2, the
3 is a diagram showing another example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
Referring to FIG. 3, both uplink and downlink data may be processed using WLAN carriers. That is, the
4 is a diagram showing another example of a data transmission path using an E-UTRAN carrier and a WLAN carrier.
Referring to FIG. 4, the
1 or 3, when the
2 or FIG. 4, the
A base station carrier or an eNB carrier as used herein refers to an E-UTRAN carrier, which means a carrier formed through E-UTRAN radio resources. Hereinafter, the E-UTRAN carrier and the base station carrier are used in combination if necessary.
<WLAN Radio Resource Configuration Information>
5 is a diagram illustrating an example of a network configuration scenario for the present invention.
Referring to FIG. 5, a
When the UE is located at a location where the cell coverage and WLAN coverage associated with the
The manner in which a base station configures a radio bearer (DRB) over a WLAN carrier, or a radio bearer over an E-UTRAN carrier and a WLAN carrier may vary according to the scenarios of FIGS. 1 through 4 described above.
As an example, in the scenario of FIG. 1, E-UTRAN carriers and WLAN carriers may be used for uplink and downlink transmissions for a particular radio bearer. As another example, in the scenario of FIG. 2, E-UTRAN carriers and WLAN carriers may be used for downlink transmissions to specific radio bearers. As another example, in the scenario shown in FIG. 4, an E-UTRAN carrier may be used for uplink transmission to a specific radio bearer. In the scenario of Figures 1, 2 and 4, in order to transmit data traffic for a specific radio bearer over the E-UTRAN carrier, the base station transmits conventional DRB configuration information (e.g., the detail elements on the DRB-ToAddMod) The radio bearer via the E-UTRAN carrier can be configured in the UE. In order to process data traffic to be transmitted / received through the WLAN among the data traffic for the above-mentioned radio bearers, configuration information for configuring the transmission / reception addition function via the WLAN carrier may be configured in the UE. The DRB configuration information is included in the radio resource configuration dedicated information (Radio Resource ConfigDedicated) information element. The above-described radio resource configuration dedicated information is used for setting up / modifying / canceling radio bearers, modifying the MAC main configuration, modifying the SPS configuration, or modifying the dedicated physical configuration.
As another example, in the scenario of FIG. 3, a WLAN carrier may be used for uplink and downlink transmissions to a particular radio bearer. In the scenario of FIG. 3, since the data traffic for a specific radio bearer is not transmitted through the E-UTRAN carrier, it is necessary to configure the conventional DRB configuration information included in the radio resource configuration dedicated information (RadioResourceConfigDedicated) There is no. Thus, there is a need to define new configuration information to differentiate between the radio bearers transmitted over the WLAN carriers. Further, in order to process data traffic for the radio bearers transmitted through the WLAN, configuration information for configuring the transmission / reception addition function via the WLAN carrier may be configured in the terminal. The configuration information for configuring the transmission / reception addition function via the WLAN carrier may include WLAN cell configuration information for configuring the WLAN carrier. The WLAN cell configuration information includes WLAN cell identifier information, WLAN mobility set identifier information, band / frequency information, WLAN identification information (BSSID / HESSID / SSIDs), WLAN access authentication And information for indicating a cell WLAN primary cell to perform data transmission via the WLAN among the WLAN cells.
1, in the case of an entity (e.g., a PDCP or an RLC entity) in which separation / merging occurs for each radio bearer, the routing function of the transmission part and the reordering function of the reception part May be required. Alternatively, as another example of the additional function, it may be necessary to set up the terminal to access the WLAN or perform data communication via the WLAN between the terminal and the base station. Alternatively, the terminal (or the base station) receiving the user plane data transmitted through the WLAN from the layer 2 entity of each radio bearer in the base station (or the terminal) may transmit the user plane data to the layer 2 of the corresponding radio bearer You may need to configure it to map to an object.
For this additional function, the base station can transmit WLAN radio resource configuration dedicated information for setting up data transmission / reception using the WLAN carrier to the terminal. The WLAN radio resource configuration dedicated information may include information necessary for the UE to transmit and receive data of a specific radio bearer over the WLAN carrier. For example, the WLAN radio resource configuration dedicated information may include bearer configuration information or a bearer configuration information to indicate the routing function of the transmission part and the reordering function of the reception part in the entity (e.g., PDCP or RLC entity) The layer 2 entity configuration information may include information for indicating the layer 2 entity configuration information. For example, bearer type classification information may be included. As another example, the layer-2 entity configuration information may include a detail element for indicating this. This information corresponds to the radio bearer dedicated information and can be included in the radio resource configuration dedicated information.
In another example, the WLAN radio resource configuration dedicated information may include WLAN cell configuration information for the UE to configure a WLAN carrier to transmit data of a specific radio bearer. The WLAN cell configuration information includes WLAN cell identifier information, WLAN mobility set identifier information, band / frequency information, WLAN identification information (BSSID / HESSID / SSIDs), WLAN access authentication And information for indicating a cell WLAN primary cell to perform data transmission via the WLAN among the WLAN cells.
The WLAN radio resource configuration dedicated information for the terminal to access the WLAN AP and / or to configure the data communication via the WLAN carrier between the terminal and the base station includes WLAN identification information (e.g., SSID, BSSID, HESSID) and key information. Since the above-described WLAN radio resource configuration dedicated information is applied only to the radio bearer group using the transmission over the WLAN carrier, the radio resource configuration for the radio bearer group using the transmission over the WLAN carrier distinguished from the conventional radio resource configuration dedicated information Dedicated information (for example, denoted as RadioResourceConfigDedicatedWLAN) can be defined and used. The RadioResourceConfigDedicatedWLAN described above is used to refer to radio resource configuration dedicated information for a radio bearer group that uses transmission over a WLAN carrier divided into conventional radio resource configuration dedicated information and is described in this specification as WLAN radio resource configuration dedicated information, It is not limited to this name.
In order to instruct the terminal, which has received the user plane data transmitted through the WLAN carrier, from the layer 2 entity of each radio bearer in the base station to map the user plane data to the layer 2 entity of the corresponding radio bearer, The configuration information may include information for indicating this. As an example, tunnel configuration information may be included. As another example, identification information for mapping the layer 2 PDU or information or header information to be encapsulated in the layer 2 PDU to map the layer 2 PDU may be included. The information for instructing, the identification information, or the information to be encapsulated or the header information described above corresponds to the radio bearer dedicated information, and thus can be included in the radio resource configuration dedicated information. Alternatively, since the above-mentioned information for specifying, the identification information, or the information to be encapsulated or the header information is applied only to the radio bearer group using the transmission over the WLAN carrier, the transmission via the WLAN carrier distinguished from the conventional radio resource configuration- May be included in the WLAN radio resource configuration dedicated information for the used radio bearer group.
In the scenario shown in FIG. 2, as an example of the transmission / reception addition function via the WLAN carrier, the (transmission) routing function in the PDCP entity or the RLC entity of the base station and the (reordering) May be required. Alternatively, as another example of the additional function, it may be necessary for the terminal to establish access to the WLAN and / or perform data communication via the WLAN carrier between the terminal and the base station. Alternatively, as another example of the additional function, a setting for mapping a user plane data to a layer 2 entity of a corresponding radio bearer by a terminal, which has received user plane data transmitted through a WLAN carrier from a layer 2 entity of each radio bearer in the base station, May be required.
The bearer configuration information or information for instructing the layer 2 entity configuration information to indicate the reordering function of the receiving part in an entity (for example, a PDCP or an RLC entity) in which intra-terminal merging occurs is included. For example, bearer type classification information may be included. As another example, the layer-2 entity configuration information may include a detail element for indicating this. Since the above-mentioned information corresponds to the radio bearer dedicated information, it can be included in the radio resource configuration dedicated information.
The WLAN radio resource configuration dedicated information for the terminal to access the WLAN AP and / or to configure the data communication via the WLAN carrier between the terminal and the base station includes WLAN identification information (e.g., SSID, BSSID, HESSID) and key information. Since the above-described WLAN radio resource configuration dedicated information is applied only to the radio bearer group using the transmission over the WLAN carrier, the radio resource configuration for the radio bearer group using the transmission over the WLAN carrier distinguished from the conventional radio resource configuration dedicated information Dedicated information (for example, denoted as RadioResourceConfigDedicatedWLAN) can be defined and used.
In order to instruct the terminal, which has received the user plane data transmitted through the WLAN carrier, from the layer 2 entity of each radio bearer in the base station to map the user plane data to the layer 2 entity of the corresponding radio bearer, The configuration information may include information for indicating this. As an example, tunnel configuration information may be included. As another example, identification information for mapping the layer 2 PDU or information or header information to be encapsulated in the layer 2 PDU to map the layer 2 PDU may be included. The information for instructing, the identification information, or the information to be encapsulated or the header information described above corresponds to the radio bearer dedicated information, and thus can be included in the radio resource configuration dedicated information. Alternatively, since the above-mentioned information for specifying, the identification information, or the information to be encapsulated or the header information is applied only to the radio bearer group using the transmission over the WLAN carrier, the transmission via the WLAN carrier distinguished from the conventional radio resource configuration- May be included in the WLAN radio resource configuration dedicated information for the used radio bearer group.
In the scenario shown in FIG. 3, it may be necessary to set up the terminal to access the WLAN and / or to perform data communication through the WLAN carrier between the terminal and the base station, as an example of the transmission / reception function via the WLAN carrier. Alternatively, as another example of the additional function, a terminal (or a base station) receiving user plane data transmitted through a WLAN from a layer 2 entity of each radio bearer in a base station (or a terminal) transmits user plane data to a layer 2 You may need to configure it to map to an object.
The WLAN radio resource configuration dedicated information for the terminal to access the WLAN AP and / or to configure the data communication via the WLAN carrier between the terminal and the base station includes WLAN identification information (e.g., SSID, BSSID, HESSID) and key information. Since the above-described WLAN radio resource configuration dedicated information is applied only to the radio bearer group using the transmission over the WLAN carrier, the radio resource configuration for the radio bearer group using the transmission over the WLAN carrier distinguished from the conventional radio resource configuration dedicated information Dedicated information (for example, denoted as RadioResourceConfigDedicatedWLAN) can be defined and used.
In order to instruct the terminal, which has received the user plane data transmitted through the WLAN carrier, from the layer 2 entity of each radio bearer in the base station to map the user plane data to the layer 2 entity of the corresponding radio bearer, The configuration information may include information for indicating this.
In order to instruct the base station to receive the user plane data transmitted from the layer 2 entity of each radio bearer in the terminal through the WLAN carrier and to map the user plane data to the layer 2 entity of the corresponding radio bearer in the corresponding base station, The layer 2 configuration information may include information for indicating this.
As an example, tunnel configuration information may be included. As another example, identification information for mapping the layer 2 PDU or information or header information to be encapsulated in the layer 2 PDU to map the layer 2 PDU may be included. Since this information is applied only to the radio bearer group using the transmission over the WLAN carrier, it is included in the WLAN radio resource configuration dedicated information for the radio bearer group using the transmission via the WLAN carrier, which is different from the conventional radio resource configuration dedicated information .
In the scenario shown in FIG. 4, it may be necessary to configure the terminal to access the WLAN and / or to perform data communication through the WLAN carrier between the terminal and the base station, as an example of the transmission / reception function via the WLAN carrier. Alternatively, as another example of the additional function, it may be necessary to configure a terminal, which has received user plane data transmitted through a WLAN from a layer 2 entity of each radio bearer in the base station, to map user plane data to a layer 2 entity of the corresponding radio bearer .
The WLAN radio resource configuration dedicated information for the terminal to access the WLAN and / or to configure the data communication through the WLAN carrier between the terminal and the base station includes WLAN identification information (e.g. SSID, BSSID, HESSID) key < / RTI > information. Since this information is only applied to the radio bearer group using transmission over the WLAN carrier, it can be included in the WLAN radio resource configuration dedicated information for the radio bearer group using the transmission via the WLAN carrier distinguished from the conventional radio resource configuration dedicated information have.
In order to instruct the terminal, which has received the user plane data transmitted through the WLAN carrier, from the layer 2 entity of each radio bearer in the base station to map the user plane data to the layer 2 entity of the corresponding radio bearer, The configuration information may include information for indicating this. As an example, tunnel configuration information may be included. As another example, identification information for mapping the layer 2 PDU or information or header information to be encapsulated in the layer 2 PDU to map the layer 2 PDU may be included. The information for instructing, the identification information, or the information to be encapsulated or the header information described above corresponds to the radio bearer dedicated information, and thus can be included in the radio resource configuration dedicated information. Alternatively, since the above-mentioned information for specifying, the identification information, or the information to be encapsulated or the header information is applied only to the radio bearer group using the transmission over the WLAN carrier, the transmission via the WLAN carrier distinguished from the conventional radio resource configuration- May be included in the WLAN radio resource configuration dedicated information for the used radio bearer group.
As described above, the terminal and the base station of the present invention can define and use WLAN radio resource configuration dedicated information according to the respective scenarios of FIG. 1 to FIG. 4 in order to transmit and receive data using the WLAN carrier. That is, the WLAN radio resource configuration dedicated information may include setting information for a radio bearer group including one or more radio bearers set to transmit and receive data using the WLAN carrier. Also, as described above with respect to each of the scenarios of FIG. 1 to FIG. 4, the WLAN radio resource configuration dedicated information includes WLAN cell configuration information such as various instruction information, identification information, tunnel information, Radio bearer configuration information.
< WLAN Send>
As described above, in each of the scenarios, the base station can establish the terminal to perform the data communication via the WLAN carrier between the terminal and the base station by accessing the WLAN AP and transmitting / receiving an additional function through the WLAN carrier. For example, the terminal may receive WLAN radio resource configuration dedicated information including information that the terminal sets or instructs the terminal to access the WLAN AP and / or perform data communication via the WLAN carrier between the terminal and the base station. When the MS receives an RRC Connection Reconfiguration message including information dedicated to WLAN radio resource configuration, the MS transmits an RRC Connection Reconfiguration message to the WLAN AP for access / connection authentication / tunnel setup and / or data communication via the WLAN carrier between the MS and the BS Object / layer / function can be set. The MS can transmit an RRC Connection Reconfiguration Complete message to the BS.
The terminal may attempt to access / access authentication / tunnel setup via the WLAN AP and / or data communication via the WLAN carrier between the terminal and the base station to inform the base station of the success or failure of access / connection authentication / data communication via the WLAN carrier .
For example, if the UE detects a failure in the WLAN connection authentication and / or tunnel setup process, it can send it to the base station.
A failure on the WLAN radio link indicates that the terminal is in a state where the WLAN radio link quality (e.g. beacon RSSI, channel utilization, backhaul rate, WLAN signal strength) is below a certain threshold, Time, does not receive feedback for the WLAN transmission for a certain period of time, detects a certain number or more of losses in the feedback on the WLAN transmission, fails to authenticate the WLAN connection, or fails to succeed in the WLAN connection authentication for a certain period of time , ≪ / RTI > a failure to set up a WLAN tunnel for a period of time / attempt occurs.
The success or failure of the terminal accessing the base station through the WLAN AP or the data communication via the WLAN carrier may be performed before, after, or concurrently with the transmission of the RRC Connection Reconfiguration Complete message.
On the other hand, since the terminal has mobility, the base station can be changed in accordance with the movement as described in Fig. This is referred to as handover of the UE, and transmission / reception of data through the WLAN carrier can be maintained or canceled when the UE performs handover. Therefore, the data processing through the WLAN carrier in the handover procedure of the UE will be described below.
< Handover preparation>
The handover procedure will be described in the case where the UE of the present invention moves from a location where the coverage of the base station eNB1 and the coverage of the WLAN are overlapped to a location where the coverage of another base station eNB2 and the above WLAN coverage overlap. A base station in which a mobile station currently maintains an RRC connection is referred to as a base station or a source base station and a base station to which the mobile station moves and performs an RRC connection is described as a target base station.
When the source base station determines handover of the mobile station based on the measurement report and the RRM information, the source base station transmits a handover request message including information necessary for preparing the handover to the target base station do. The handover request message includes a Handover Preparation Information message.
In addition, the handover preparation information message includes an AS-Config IE (information element). The AS-Config IE relates to the RRC configuration information (or RRC Context) in the source base station and can be used by the target base station to determine the need for RRC configuration change during the handover preparation phase. The AS-Config IE information may be used after successful handover has been performed or during RRC connection re-establishment.
6 is a diagram exemplarily showing an AS-Config IE (Information Element) according to the prior art.
In the conventional LTE technology, since the As-Config IE includes only the conventional radio resource configuration dedicated information (RadioResourceConfigDedicated) as the radio resource configuration dedicated information (sourceRadioResourceConfig) of the source base station, the target base station transmits the radio bearer group (E.g., the above-described WLAN radio resource configuration dedicated information or radio bearer configuration information using the WLAN carrier or WLAN cell configuration information), and accordingly, the radio using the transmission via the WLAN carrier It has not been possible to provide service continuity of data transmission to the bearers. That is, when the UE performs the handover, data transmission / reception using the WLAN carrier can not be continued or reconfigured rapidly even within the coverage of the same WLAN AP.
Therefore, in order to secure the continuity of data transmission / reception through the WLAN carrier, the present invention is applied to a WLAN radio of a radio bearer group using transmission via a WLAN carrier, which is different from conventional radio resource configuration dedicated information (Radio Resource ConfigDedicated) Resource configuration information (e.g., RadioResourceConfigDedicatedWLAN).
Alternatively, in the present invention, it is possible to include the WLAN measurement result in the AS-Config IE described above. Alternatively, in the present invention, the measurement result of the E-UTRAN serving cell may be included in the above-described AS-Config IE. Alternatively, the present invention may include measurement configuration information for WLAN measurement in the AS-Config IE described above. The WLAN radio measurement is different from the conventional E-UTRAN measurement configuration in the measurement channel and the measurement signal. The WLAN measurement configuration information may also include one or more information contained in the WLAN OffloadConfig or one or more WLAN information based thereon (e.g., WLAN channel utilization (BSS load), up / down backhaul bandwidth Information of one or more of a received signal strength indicator, a BSSID / HESSID / SSIDs, a WLAN band, and a WLAN frequency). In addition, the WLAN measurement configuration may be configured to measure the channel load for determining the WLAN channel to be used by the terminal through a method other than the BSS LOAD method using the WLAN beacon (e.g., energy detection method) have. Therefore, the measurement configuration for WLAN measurement can be configured using different measurement configuration information different from the existing measurement configuration (measconfig), and in this case, it can be included in the AS-Config IE.
Alternatively, measurement configuration information for the WLAN measurement described above may be included in the RRM-Config IE. As described above, the WLAN measurement configuration information included in the RRM-Config IE includes one or more information included in the WLAN offload configuration information (WLAN-OffloadConfig) or one or more WLAN information based thereon (e.g., ), An up / down backhaul bandwidth, an Offload PreferenceIndicator, RCPI, beacon RSSI, WLAN identification (BSSID / HESSID / SSIDs), WLAN band, WLAN frequency. In addition, the BS may select and send WLAN channel information to be changed by the radio bearer using the WLAN carrier to the UE through the WLAN channel utilization rate (BSS load) or the load information of the WLAN channel included in the measurement report received from the UE. Alternatively, the base station may allow the terminal to select an appropriate WLAN channel in the WLAN access process without having to send the WLAN channel information to the terminal.
Using one or more of the above information, the target base station may use it to add, modify, or release radio resource configurations over the WLAN carrier at the handover execution phase, at the handover completion phase, or after the handover.
< Handover Operation of terminal according to message reception>
1) WLAN carrier unconfiguration
The target base station can instruct the terminal to release the entire WLAN carrier configuration described above through the handover message. For example, a configured WLAN cell can be released. As another example, a WLAN cell configured and a WLAN bearer associated with the WLAN cell can be released. To this end, the target base station may include information for instructing the terminal to release the entire WLAN carrier configuration in the handover message. Alternatively, upon receiving the WLAN radio resource configuration dedicated information for the radio bearer group using the transmission via the WLAN carrier via the source base station, the target base station may instruct the terminal to release the entire WLAN carrier configuration in the handover message Information.
Depending on the WLAN carrier deconfiguration, the radio bearer that was transmitted over the conventional WLAN carrier may be transmitted via the E-UTRAN carrier. For example, the target base station releases the radio bearer that the UE has transmitted through the WLAN carrier in the handover message and adds / corrects the released radio bearer to the radio bearer configuration information (DRB-ToAddMod) through the base station carrier And may include configuration information for instructing. As another example, the target base station may include information for instructing a UE to add / modify a radio bearer, which the UE has transmitted through the WLAN carrier, to the conventional radio bearer configuration information (DRB-ToAddMod) through the base station carrier in the handover message It is possible. As another example, in the case of a WLA bearer (for example, a WLAN switch bearer configured through an IPsec tunnel) that transmits downlink or uplink data only through a WLAN carrier as shown in FIG. 3 or 4, May include information for instructing to switch / modify / change the radio bearer that is transmitting / receiving through this WLAN carrier to the radio bearer via the base station carrier associated with the WLAN carrier radio bearer.
2) Unconfigure and add WLAN carriers
The target base station can instruct the terminal to release the entire WLAN carrier configuration described above through the handover message. For example, a configured WLAN cell may be released. For another example, the WLAN cell configured and the WLAN bearer associated with that WLAN cell can be released. To this end, the target base station may include information for instructing the terminal to release the entire WLAN carrier configuration in the handover message. However, the target base station may be able to add / set / reset / modify / change the WLAN carrier configuration via the same handover message.
Depending on the WLAN carrier deconfiguration and addition, the radio bearer that was transmitted over the conventional WLAN carrier may be transmitted over the WLAN carrier. For example, the target base station may include information for instructing the mobile station to maintain the radio bearer that the mobile station transmitted through the WLAN carrier in the handover message. As another example of this, the target base station may include information for instructing the setup / reset / modification / modification of the radio bearer that the UE transmits through the WLAN carrier in the handover message.
A layer 2 entity (e.g., a PDCP entity or an RLC entity) of a radio bearer that transmits through a WLAN carrier may be reset upon handover. Alternatively, a layer 2 entity (e.g., a PDCP entity or an RLC entity) of a radio bearer that transmits via a WLAN carrier may be reconfigured to maintain the entity without reconfiguration upon handover.
3) Maintain WLAN carrier configuration
For example, the target base station may instruct the terminal to maintain the WLAN carrier configuration described above via a handover message. To this end, the target base station may include information for instructing the terminal to maintain the above-described WLAN carrier configuration in the handover message.
As another example, the target base station may instruct the terminal to set up the WLAN carrier configuration described above via a handover message. To this end, the target base station may include information for instructing the terminal to set / maintain the above-described WLAN carrier configuration in the handover message.
As another example, the target base station may instruct the terminal to re-establish the above-described WLAN carrier configuration via a handover message. To this end, the target base station may include information for instructing the UE to re-establish the WLAN carrier configuration in the handover message.
As a result of maintaining the WLAN configuration, a radio bearer that is transmitted over a conventional WLAN carrier can be made to maintain transmission over the WLAN carrier. For example, the target base station may include information for instructing the mobile station to maintain the radio bearer that the mobile station transmitted through the WLAN carrier in the handover message. As another example of this, the target base station may include information for instructing setting / resetting of the radio bearer which the UE transmits through the WLAN carrier in the handover message.
A layer 2 entity (e.g., a PDCP entity or an RLC entity) of a radio bearer that transmits through a WLAN carrier may be reset upon handover. Alternatively, a layer 2 entity (e.g., a PDCP entity or an RLC entity) of a radio bearer that transmits over a WLAN carrier may be reconfigured to maintain the entity without reconfiguration upon handover.
As described above, the present invention allows the E-UTRAN to add a WLAN carrier at the RAN level as one carrier in the E-UTRAN to transmit user plane data belonging to a particular bearer over the E-UTRAN carrier and / or WLAN carrier Can provide control plane configuration information to perform. In particular, when the UE moves, it is possible to continuously service the user plane data transmitted through the WLAN carrier.
Hereinafter, operations of a terminal and a base station capable of performing all the embodiments of the present invention will be described with reference to the drawings.
7 is a diagram for explaining a terminal operation according to an embodiment of the present invention.
A UE according to an embodiment of the present invention includes a step of receiving WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier from a base station, and a step of receiving, based on WLAN radio resource configuration dedicated information, Setting the radio bearer group to transmit and receive data via the WLAN carrier, and transmitting and receiving data of the radio bearer group through the WLAN carrier.
Referring to FIG. 7, the UE may receive WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier from a base station (S710). The WLAN radio resource configuration dedicated information may include at least one of WLAN identification information, encryption algorithm information, and key information. Or the WLAN radio resource configuration dedicated information is used to instruct the terminal that has received the user plane data transmitted through the WLAN carrier from the layer 2 entity of each radio bearer in the base station to map the user plane data to the layer 2 entity of the corresponding radio bearer , And information for instructing the bearer configuration information or the corresponding layer 2 configuration information. As an example, the WLAN radio resource configuration dedicated information may include tunnel configuration information. As another example, the WLAN radio resource configuration dedicated information may include identification information for mapping the layer 2 PDU, or information or header information to be encapsulated in the layer 2 PDU to map the layer 2 PDU. The WLAN radio resource configuration dedicated information may be information set separately from radio resource configuration dedicated information of a radio bearer that transmits and receives data using the base station carrier.
In addition, the terminal may include setting up a radio bearer group including one or more radio bearers to transmit and receive data through the WLAN carrier, based on the WLAN radio resource configuration dedicated information (S720). The radio bearer group includes one or more radio bearers that transmit and receive data to and from the base station using a WLAN carrier. The UE can set the radio bearer to transmit and receive data using the WLAN carrier using the radio bearer configuration information or the like included in the WLAN radio resource configuration dedicated information.
In addition, the terminal may include transmitting and receiving data of the radio bearer group through the WLAN carrier (S730). The UE can transmit / receive data of the corresponding radio bearer group to / from the base station via a set WLAN carrier. The terminal can transmit or receive data through the WLAN carrier according to the respective scenarios described in Figs.
Meanwhile, when the handover of the UE is determined, the BS can transmit the WLAN measurement information and the WLAN radio resource configuration dedicated information to the target base station. The WLAN radio resource configuration dedicated information transmitted to the target base station may be included in the handover request message and transmitted. The target base station may release the WLAN radio resource configuration and configure the data of the radio bearer group to be transmitted and received using the base station carrier.
8 is a view for explaining a base station operation according to another embodiment of the present invention.
The base station according to another embodiment of the present invention includes a step of generating WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier, transmitting WLAN radio resource configuration dedicated information to the UE, Wherein the WLAN radio resource configuration dedicated information includes information for setting the radio bearer group to transmit and receive data via the WLAN carrier.
Referring to FIG. 8, the base station of the present invention may include generating WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier (S810). The WLAN radio resource configuration dedicated information may include information for setting the radio bearer group to transmit and receive data through the WLAN carrier. The WLAN radio resource configuration dedicated information may include at least one of WLAN identification information, encryption algorithm information, and key information. Or the WLAN radio resource configuration dedicated information is used to instruct the terminal that has received the user plane data transmitted through the WLAN carrier from the layer 2 entity of each radio bearer in the base station to map the user plane data to the layer 2 entity of the corresponding radio bearer , And information for instructing the bearer configuration information or the corresponding layer 2 configuration information. As an example, the WLAN radio resource configuration dedicated information may include tunnel configuration information. As another example, the WLAN radio resource configuration dedicated information may include identification information for mapping the layer 2 PDU, or information or header information to be encapsulated in the layer 2 PDU to map the layer 2 PDU. The WLAN radio resource configuration dedicated information may be information set separately from radio resource configuration dedicated information of a radio bearer that transmits and receives data using the base station carrier.
In addition, the base station may include transmitting WLAN radio resource configuration dedicated information to the UE (S820). The base station can transmit information on the radio bearer group set to transmit and receive data using the WLAN carrier to the mobile station through the WLAN radio resource configuration dedicated information. The UE can set the radio bearer group including one or more radio bearers to transmit and receive data through the WLAN carrier using the received WLAN radio resource configuration dedicated information.
In addition, the base station may include transmitting and receiving data of a radio bearer group including one or more radio bearers through a WLAN carrier (S830). When a radio bearer group using a WLAN carrier is set up in a terminal, the base station can transmit and receive data using a WLAN carrier with a terminal through a radio bearer belonging to the corresponding radio bearer group. The base station may transmit or receive data via the WLAN carrier according to the respective scenarios described in Figures 1-4.
Hereinafter, a configuration of a terminal and a base station for carrying out the present invention will be briefly described with reference to the drawings.
9 is a diagram illustrating a terminal configuration according to another embodiment of the present invention.
9, the
The WLAN radio resource configuration dedicated information received by the
Further, the
In addition, the transmitter 1130 transmits uplink control information, data, and a message to the base station through the corresponding channel.
Meanwhile, as described above, the base station can transmit the WLAN measurement information and the WLAN radio resource configuration dedicated information to the target base station when the handover of the terminal is determined. The WLAN radio resource configuration dedicated information transmitted to the target base station may be included in the handover request message and transmitted. The target base station may release the WLAN radio resource configuration and configure the data of the radio bearer group to be transmitted and received using the base station carrier.
10 is a diagram illustrating a base station configuration according to another embodiment of the present invention.
10, the
The
In addition, when the handover of the UE is determined, the
In addition, the
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.
Claims (24)
Receiving WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier from a base station;
Setting up a radio bearer group including one or more radio bearers to transmit and receive the data through the WLAN carrier based on the WLAN radio resource configuration dedicated information; And
And transmitting and receiving data of the radio bearer group through the WLAN carrier.
Wherein the WLAN radio resource configuration dedicated information comprises:
And at least one of WLAN identification information, encryption algorithm information, and key information.
Wherein the WLAN radio resource configuration dedicated information comprises:
Wherein the information is information set separately from radio resource configuration dedicated information of a radio bearer that transmits and receives data using a base station carrier.
When the handover of the MS is determined,
And transmits the WLAN measurement information and the WLAN radio resource configuration dedicated information to the target base station.
The WLAN radio resource configuration dedicated information transmitted to the target base station includes:
And the handover request message is included in the handover request message.
The target base station,
The WLAN radio resource configuration is released, and the data of the radio bearer group is transmitted / received using the base station carrier.
Generating WLAN radio resource configuration dedicated information for setting up data transmission / reception using the WLAN carrier;
Transmitting the WLAN radio resource configuration dedicated information to a terminal; And
Transmitting and receiving data of a radio bearer group including one or more radio bearers through the WLAN carrier,
Wherein the WLAN radio resource configuration dedicated information includes information for setting the radio bearer group to transmit and receive the data via the WLAN carrier.
Wherein the WLAN radio resource configuration dedicated information comprises:
And at least one of WLAN identification information, encryption algorithm information, and key information.
Wherein the WLAN radio resource configuration dedicated information comprises:
Wherein the information is information set separately from radio resource configuration dedicated information of a radio bearer that transmits and receives data using a base station carrier.
Further comprising the step of determining handover of the terminal,
Wherein the WLAN measurement information and the WLAN radio resource configuration dedicated information are transmitted to the target base station when handover of the UE is determined.
The WLAN radio resource configuration dedicated information transmitted to the target base station includes:
And the handover request message is included in the handover request message.
The target base station,
The WLAN radio resource configuration is released, and the data of the radio bearer group is transmitted / received using the base station carrier.
A receiver for receiving WLAN radio resource configuration dedicated information for setting up data transmission / reception using a WLAN carrier from a base station;
A control unit for setting, based on the WLAN radio resource configuration dedicated information, a radio bearer group including one or more radio bearers to transmit and receive the data through the WLAN carrier; And
And a transmitter for transmitting data of the radio bearer group through the WLAN carrier.
Wherein the WLAN radio resource configuration dedicated information comprises:
And at least one of WLAN identification information, encryption algorithm information, and key information.
Wherein the WLAN radio resource configuration dedicated information comprises:
Wherein the information is information set separately from radio resource configuration dedicated information of a radio bearer for transmitting and receiving data using a base station carrier.
The base station comprises:
And transmits the WLAN measurement information and the WLAN radio resource configuration dedicated information to the target base station when handover of the terminal is determined.
The WLAN radio resource configuration dedicated information transmitted to the target base station includes:
And the handover request message is included in the handover request message.
The target base station,
The WLAN radio resource configuration is released, and the data of the radio bearer group is transmitted and received using the base station carrier.
A control unit for generating WLAN radio resource configuration dedicated information for setting up data transmission / reception using the WLAN carrier;
A transmitter for transmitting the WLAN radio resource configuration dedicated information to a terminal; And
And a receiver for receiving data of a radio bearer group including one or more radio bearers through the WLAN carrier,
And the WLAN radio resource configuration dedicated information includes information for setting the radio bearer group to transmit and receive the data through the WLAN carrier.
Wherein the WLAN radio resource configuration dedicated information comprises:
And at least one of WLAN identification information, encryption algorithm information, and key information.
Wherein the WLAN radio resource configuration dedicated information comprises:
Wherein the information is information set separately from radio resource configuration dedicated information of a radio bearer that transmits and receives data using a base station carrier.
The transmitter may further comprise:
And transmits the WLAN measurement information and the WLAN radio resource configuration dedicated information to the target base station when the handover of the UE is determined.
The WLAN radio resource configuration dedicated information transmitted to the target base station includes:
And the handover request message is included in the handover request message.
The target base station,
The WLAN radio resource configuration is released, and the data of the radio bearer group is transmitted / received using the base station carrier.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201580053056.6A CN106717060B (en) | 2014-10-02 | 2015-10-01 | Method for processing data using WLAN carrier and apparatus thereof |
| US15/516,065 US10736175B2 (en) | 2014-10-02 | 2015-10-01 | Method for processing data using WLAN carrier and apparatus therefor |
| PCT/KR2015/010391 WO2016053027A1 (en) | 2014-10-02 | 2015-10-01 | Method for processing data using wlan carrier and apparatus therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| KR20130029277A (en) | 2011-09-14 | 2013-03-22 | 삼성전자주식회사 | Microfluidic device and control method thereof |
| JP2014096664A (en) * | 2012-11-08 | 2014-05-22 | Ntt Docomo Inc | Radio communication system and communication control method |
| WO2014157888A1 (en) * | 2013-03-29 | 2014-10-02 | 주식회사 케이티 | Method for handover in environment connected to multiple base stations and apparatus therefor |
| WO2014168426A1 (en) * | 2013-04-10 | 2014-10-16 | Lg Electronics Inc. | Method and apparatus for performing data transmission in wireless communication system |
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| KR20130029277A (en) | 2011-09-14 | 2013-03-22 | 삼성전자주식회사 | Microfluidic device and control method thereof |
| JP2014096664A (en) * | 2012-11-08 | 2014-05-22 | Ntt Docomo Inc | Radio communication system and communication control method |
| WO2014157888A1 (en) * | 2013-03-29 | 2014-10-02 | 주식회사 케이티 | Method for handover in environment connected to multiple base stations and apparatus therefor |
| WO2014168426A1 (en) * | 2013-04-10 | 2014-10-16 | Lg Electronics Inc. | Method and apparatus for performing data transmission in wireless communication system |
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