WO2012138171A2 - 무선 통신 시스템에서 단말이 네트워크와 연결을 설정하는 방법 및 이를 위한 장치 - Google Patents
무선 통신 시스템에서 단말이 네트워크와 연결을 설정하는 방법 및 이를 위한 장치 Download PDFInfo
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- WO2012138171A2 WO2012138171A2 PCT/KR2012/002623 KR2012002623W WO2012138171A2 WO 2012138171 A2 WO2012138171 A2 WO 2012138171A2 KR 2012002623 W KR2012002623 W KR 2012002623W WO 2012138171 A2 WO2012138171 A2 WO 2012138171A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
Definitions
- the present invention relates to a wireless communication system, and more particularly, to a method and apparatus for establishing a connection with a network by a terminal in a wireless communication system.
- a 3GPP LTE (3rd Generation Partnership Project Long Term Evolution (LTE)) communication system will be described.
- E-UMTS Evolved Universal Mobile Telecommunications System
- UMTS Universal Mobile Telecommunications System
- LTE Long Term Evolution
- an E-UMTS is located at an end of a user equipment (UE), a base station (eNode B; Enb), and a network (E-UTRAN) and connected to an external network (Access Gateway (AG)). It includes.
- the base station may transmit multiple data streams simultaneously for broadcast service, multicast service and / or unicast service.
- the cell is set to one of bandwidths such as 1.25, 2.5, 5, 10, 15, and 20Mhz to provide downlink or uplink transmission services to multiple terminals. Different cells may be configured to provide different bandwidths.
- the base station controls data transmission and reception for a plurality of terminals.
- the base station transmits downlink scheduling information for downlink (DL) data and informs the user equipment of time / frequency domain, encoding, data size, and HARQ (Hybrid Automatic Repeat and reQuest) related information.
- HARQ Hybrid Automatic Repeat and reQuest
- the base station transmits uplink scheduling information to uplink UL data for uplink (UL) data and informs the user equipment of time / frequency domain, encoding, data size, HARQ related information, and the like.
- the core network may be composed of an AG and a network node for user registration of the terminal.
- the AG manages the mobility of the UE in units of a tracking area (TA) composed of a plurality of cells.
- Wireless communication technology has been developed to LTE based on WCDMA, but the demands and expectations of users and operators are continuously increasing.
- new technological evolution is required to be competitive in the future. Reduced cost per bit, increased service availability, the use of flexible frequency bands, simple structure and open interface, and adequate power consumption of the terminal are required.
- the following is a method for establishing a connection with a network by a terminal in a wireless communication system and an apparatus therefor.
- a method for establishing a connection with a network by a terminal includes: receiving a plurality of timer values from the network through system information; And transmitting a connection request message including a specific connection reason to the network, wherein each of the plurality of timer values is used when transmitting the connection request message according to a corresponding connection reason, wherein the specific connection reason is the plurality of connection reasons. It corresponds to a particular timer value of the timer value of.
- said plurality of timer values may be for one timer or each of said plurality of timer values is for a corresponding timer.
- the one timer may be a T300 timer.
- the specific connection reason is characterized in that at least one of the machine type communication (MTC) connection, delay tolerance connection and subordinated connection.
- the system information is characterized in that the system information block type 2 (SIB2).
- the method also includes driving a timer; And stopping the driven timer when a specific condition is satisfied, wherein the specific condition is at least one of receiving a connection establishment message, receiving a connection rejection message, cell reselection, and canceling connection establishment from a higher layer.
- the method includes driving a timer; And expiring the driven timer.
- the timer may be notified of failure of a connection establishment procedure to a higher layer.
- the specific timer value may be the largest of the plurality of timer values.
- a method for establishing a connection with a terminal by a network includes: transmitting a plurality of timer values to the terminal through system information; And receiving a connection request message including a specific connection reason from the terminal, wherein each of the plurality of timer values is used when the terminal transmits the connection request message according to a corresponding connection reason. May correspond to a specific timer value among the plurality of timer values.
- a delay-tolerant access support terminal in a wireless communication system can establish a connection efficiently with a network.
- FIG. 1 is a diagram schematically illustrating an E-UMTS network structure as an example of a wireless communication system.
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- FIG. 3 is a diagram illustrating a control plane and a user plane structure of a radio interface protocol between a terminal and an E-UTRAN based on the 3GPP radio access network standard.
- FIG. 4 is a diagram for explaining physical channels used in a 3GPP system and a general signal transmission method using the same.
- FIG. 5 is a diagram illustrating a structure of a radio frame used in an LTE system.
- FIG. 6 is a diagram illustrating a general transmission and reception method using a call message.
- MTC 7 is a diagram for explaining the structure of machine type communication (MTC).
- FIG. 8 is a diagram illustrating an RRC connection process between an MTC terminal and a network according to a first embodiment of the present invention.
- FIG. 9 is a diagram illustrating an RRC connection process between an MTC terminal and a network according to a first embodiment of the present invention.
- FIG. 10 illustrates a block diagram of a communication device according to an embodiment of the present invention.
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- the E-UTRAN consists of cells (eNBs), which cells are connected via an X2 interface.
- the cell is connected to the terminal through the air interface, and is connected to the Evolved Packet Core (EPC) through the S1 interface.
- EPC Evolved Packet Core
- the EPC includes a mobility management entity (MME), a serving-gateway (S-GW), and a packet data network-gateway (PDN-GW).
- MME mobility management entity
- S-GW serving-gateway
- PDN-GW packet data network-gateway
- FIG. 3 is a diagram illustrating a control plane and a user plane structure of a radio interface protocol between a terminal and an E-UTRAN based on the 3GPP radio access network standard.
- the control plane refers to a path through which control messages used by a user equipment (UE) and a network to manage a call are transmitted.
- the user plane refers to a path through which data generated at an application layer, for example, voice data or Internet packet data, is transmitted.
- the physical layer which is the first layer, provides an information transfer service to an upper layer by using a physical channel.
- the physical layer is connected to the upper layer of the medium access control layer through a transport channel. Data moves between the medium access control layer and the physical layer through the transport channel. Data moves between the physical layer between the transmitting side and the receiving side through the physical channel.
- the physical channel utilizes time and frequency as radio resources. Specifically, the physical channel is modulated in the Orthogonal Frequency Division Multiple Access (OFDMA) scheme in the downlink, and modulated in the Single Carrier Frequency Division Multiple Access (SC-FDMA) scheme in the uplink.
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the second layer includes a medium access control (MAC) layer, a radio link control (RLC) layer, and a packet data convergence protocol (PDCP) layer.
- the MAC layer of the second layer serves to map various logical channels to various transport channels, and also serves as logical channel multiplexing to map several logical channels to one transport channel.
- the MAC layer is connected to the upper layer RLC layer in a logical channel, and the logical channel is a control channel for transmitting information of the control plane and information of the user plane according to the type of information transmitted largely. It is divided into a traffic channel transmitting a traffic channel.
- the RLC layer of the second layer performs segmentation and concatenation of data received from an upper layer to adjust a data size so that the lower layer is suitable for transmitting data in a wireless section.
- transparent mode TM
- un-acknowledged mode UM
- QoS quality of service
- RB radio bearer
- AM Acknowledged Mode
- the AM RLC performs a retransmission function through an automatic repeat and request (ARQ) function for reliable data transmission.
- the PDCP layer of the second layer is a header that reduces the size of the IP packet header that contains relatively large and unnecessary control information for efficient transmission in a low bandwidth wireless section when transmitting an IP packet such as IPv4 or IPv6. Performs the header compression function. This transmits only the necessary information in the header portion of the data, thereby increasing the transmission efficiency of the radio section.
- the PDCP layer also performs a security function, which is composed of encryption (Ciphering) to prevent the third party data interception and integrity protection (Integrity protection) to prevent the third party data manipulation.
- functions performed in the PDCP layer include header compression, encryption, integrity protection, PDCP sequence number maintenance, and the like, and these are selectively performed according to the type of RB.
- the radio resource control (RRC) layer of the third layer is defined only in the control plane.
- the RRC layer is responsible for controlling logical channels, transport channels, and physical channels in association with configuration, reconfiguration, and release of radio bearers (RBs).
- RB means a service provided by the second layer for data transmission between the terminal and the network.
- the RRC layers of the UE and the network exchange RRC messages with each other.
- a radio bearer can be roughly divided into two types: a signaling radio bearer (SRB) used to transmit an RRC message in a control plane and a data radio bearer (DRB) used to transmit user data in a user plane.
- the DRB may be classified into a UM DRB using a UM RLC and an AM DRB using an AM RLC according to a method of operating an RLC.
- the RRC state refers to whether or not the RRC of the UE is in a logical connection with the RRC of the E-UTRAN. If connected, the RRC connected state (RRC_CONNECTED), if not connected, the RRC idle state (RRC_IDLE). It is called.
- the E-UTRAN can grasp the presence of the UE in the RRC connection state on a cell basis, the E-UTRAN can effectively control the UE.
- the E-UTRAN cannot grasp the UE of the RRC idle state in the cell unit, and the CN manages the TA unit, which is a larger area unit than the cell. That is, in order to receive a service such as voice or data from the cell, the UE in the RRC idle state needs to transition to the RRC connected state.
- the terminal when the user first turns on the power of the terminal, the terminal first searches for an appropriate cell and then stays in an RRC idle state in the cell. Only when it is necessary to establish an RRC connection, the UE remaining in the RRC idle state transitions to the RRC connection state by performing an RRC connection establishment process with the RRC of the E-UTRAN. In this case, when the RRC connection needs to be established, an uplink data transmission is necessary due to a user's call attempt, or when a paging message is received from the E-UTRAN, a response message should be transmitted.
- the NAS (Non-Access Stratum) layer above the RRC layer performs functions such as session management and mobility management.
- ESM EPS Mobility Management
- EMM-UNREGISTERED EMM unregistered state
- the initial terminal is in an EMM unregistered state, and the terminal performs a process of registering with the corresponding network through an initial attach procedure to access the network. If the contact procedure is successfully performed, the UE and the MME are in the EMM registration state.
- the NAS layer defines two types of EPS connection management (ECM) idle state (ECM_IDLE) and ECM_CONNECTED (ECM_CONNECTED) in order to manage a signaling connection between the UE and the EPC. These two states are the UE and the MME. Applies to When the UE in the ECM idle state makes an RRC connection with the E-UTRAN, the UE is in the ECM connection state. The MME, which is in the ECM idle state, becomes an ECM connection state when it establishes an S1 connection with the E-UTRAN.
- ECM EPS connection management
- ECM_CONNECTED ECM_CONNECTED
- the E-UTRAN When the terminal is in the ECM idle state, the E-UTRAN does not have the context of the terminal. Accordingly, the UE in the ECM idle state performs a UE-based mobility related procedure such as a cell selection or cell reselection procedure without receiving a command from the network. On the other hand, when the terminal is in the ECM connection state, the mobility of the terminal is managed by the command of the network. In the ECM idle state, when the location of the terminal is different from the location known by the network, the terminal informs the network of the corresponding location of the terminal through a TA update (Tracking Area Update) procedure.
- TA update Track Area Update
- One cell constituting the base station (eNB) in the LTE system is set to one of the bandwidth, such as 1.25, 2.5, 5, 10, 15, 20Mhz to provide a downlink or uplink transmission service to multiple terminals.
- Different cells may be configured to provide different bandwidths.
- the downlink transport channel for transmitting data from the network to the UE includes a broadcast channel (BCH) for transmitting system information, a paging channel (PCH) for transmitting a paging message, and a downlink shared channel (SCH) for transmitting user traffic or a control message.
- BCH broadcast channel
- PCH paging channel
- SCH downlink shared channel
- Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
- MCH downlink multicast channel
- the uplink transmission channel for transmitting data from the terminal to the network includes a random access channel (RAC) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or a control message. It is located above the transport channel, and the logical channel mapped to the transport channel is a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), and an MTCH (multicast). Traffic Channel).
- BCCH broadcast control channel
- PCCH paging control channel
- CCCH common control channel
- MCCH multicast control channel
- Traffic Channel multicast
- FIG. 4 is a diagram for explaining physical channels used in a 3GPP system and a general signal transmission method using the same.
- the UE When the UE is powered on or enters a new cell, the UE performs an initial cell search operation such as synchronizing with the base station (S401). To this end, the terminal may receive a Primary Synchronization Channel (P-SCH) and a Secondary Synchronization Channel (S-SCH) from the base station to synchronize with the base station and obtain information such as a cell ID. have. Thereafter, the terminal may receive a physical broadcast channel from the base station to obtain broadcast information in a cell. Meanwhile, the terminal may receive a downlink reference signal (DL RS) in an initial cell search step to check the downlink channel state.
- P-SCH Primary Synchronization Channel
- S-SCH Secondary Synchronization Channel
- DL RS downlink reference signal
- the UE After completing the initial cell search, the UE acquires more specific system information by receiving a physical downlink control channel (PDSCH) according to a physical downlink control channel (PDCCH) and information on the PDCCH. It may be (S402).
- PDSCH physical downlink control channel
- PDCCH physical downlink control channel
- the terminal may perform a random access procedure (RACH) for the base station (steps S403 to S406).
- RACH random access procedure
- the UE may transmit a specific sequence to the preamble through a physical random access channel (PRACH) (S403) and receive a response message for the preamble through the PDCCH and the corresponding PDSCH (S404).
- PRACH physical random access channel
- a contention resolution procedure may be additionally performed.
- the UE After performing the procedure as described above, the UE performs a PDCCH / PDSCH reception (S407) and a physical uplink shared channel (PUSCH) / physical uplink control channel (Physical Uplink) as a general uplink / downlink signal transmission procedure.
- Control Channel (PUCCH) transmission (S408) may be performed.
- the terminal receives downlink control information (DCI) through the PDCCH.
- DCI downlink control information
- the DCI includes control information such as resource allocation information for the terminal, and the format is different according to the purpose of use.
- the control information transmitted by the terminal to the base station through the uplink or received by the terminal from the base station includes a downlink / uplink ACK / NACK signal, a channel quality indicator (CQI), a precoding matrix index (PMI), and a rank indicator (RI). ), And the like.
- the terminal may transmit the above-described control information such as CQI / PMI / RI through the PUSCH and / or PUCCH.
- FIG. 5 is a diagram illustrating a structure of a radio frame used in an LTE system.
- a radio frame has a length of 10 ms (327200 ⁇ Ts) and consists of 10 equally sized subframes.
- Each subframe has a length of 1 ms and consists of two slots.
- Each slot has a length of 0.5 ms (15360 x Ts).
- the slot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain.
- one resource block includes 12 subcarriers x 7 (6) OFDM symbols.
- Transmission time interval which is a unit time for transmitting data, may be determined in units of one or more subframes.
- the structure of the radio frame described above is merely an example, and the number of subframes included in the radio frame, the number of slots included in the subframe, and the number of OFDM symbols included in the slot may be variously changed.
- FIG. 6 is a diagram illustrating a general transmission and reception method using a call message.
- the call message includes a paging record composed of a paging cause, a terminal identifier, and the like.
- the terminal may perform a discontinuous reception period (DRX) for the purpose of reducing power consumption.
- DRX discontinuous reception period
- the network configures a plurality of paging occasions (POs) for each time period called a paging DRX cycle, and a specific terminal can receive only a specific paging opportunity time to obtain a paging message.
- the terminal may not receive a call channel during a time other than the specific call opportunity time and may be in a sleep state to reduce power consumption.
- One call opportunity time corresponds to one TTI.
- the base station and the terminal use a paging indicator (PI) as a specific value indicating the transmission of the call message.
- the base station may define a specific identifier (for example, Paging-Radio Network Temporary Identity (P-RNTI)) for the purpose of the PI to inform the terminal of the call information transmission. For example, the terminal wakes up every DRX cycle and receives one subframe to know whether a call message appears. If the P-RNTI is present in the L1 / L2 control channel (PDCCH) of the received subframe, the UE may know that there is a call message in the PDSCH of the corresponding subframe. In addition, if the call message has its own terminal identifier (eg, IMSI), the terminal receives the service by responding to the base station (eg, receiving RRC connection or system information).
- P-RNTI Paging-Radio Network Temporary Identity
- the system information includes essential information that the terminal needs to know in order to access the base station. Therefore, the terminal must receive all system information before accessing the base station, and must always have the latest system information. In addition, since the system information is information that should be known to all terminals in one cell, the base station periodically transmits system information.
- System information may be classified into a master information block (MIB), a scheduling block (SB), and a system information block (SIB).
- MIB allows the terminal to know the physical configuration of the cell, for example, bandwidth.
- SB informs transmission information of SIBs, for example, a transmission period.
- SIB is a collection of related system information. For example, a specific SIB includes only information of neighboring cells, and another SIB includes only information of an uplink radio channel used by the terminal.
- the base station transmits a call message to inform the terminal whether or not to change the system information.
- the call message includes a system information change indicator.
- the terminal receives the call message according to the call cycle, and if the call message includes the system information change indicator, receives the system information transmitted through BCCH, which is a logical channel.
- the terminal When the terminal is powered on, the terminal should perform a preparation procedure for receiving a service by selecting a cell of a suitable quality.
- the UE in the RRC dormant state should always select a cell of appropriate quality and prepare to receive service through this cell. For example, a terminal that has just been powered on must select a cell of appropriate quality to register with the network.
- the terminal in the RRC connected state enters the RRC idle state, the terminal should select a cell to stay in the RRC idle state.
- a process of selecting a cell that satisfies a specific condition in order for the terminal to stay in a service standby state such as an RRC idle state is called cell selection.
- cell selection is performed in a state in which the UE does not currently determine a cell to stay in the RRC idle state, it is most important to select the cell as soon as possible. Therefore, if the cell provides a radio signal quality of a predetermined criterion or more, even if this cell is not the cell providing the best radio signal quality to the terminal, it may be selected during the cell selection process of the terminal.
- the terminal When the terminal selects a cell that satisfies the cell selection criterion, the terminal receives information necessary for operation of the terminal in the RRC idle state of the terminal from the system information of the cell. After the UE receives all the information necessary for the operation in the RRC idle state, it waits in the RRC idle state to request a service from the network or to receive services from the network.
- the terminal After the terminal selects a cell through a cell selection process, the strength or quality of a signal between the terminal and the base station may change due to a change in mobility or a wireless environment of the terminal. Therefore, if the quality of the selected cell is degraded, the terminal may select another cell that provides better quality. When reselecting a cell in this way, a cell that generally provides better signal quality than the currently selected cell is selected. This process is called cell reselection.
- the cell reselection process has a basic purpose in selecting a cell that generally provides the best quality to a terminal in view of the quality of a radio signal.
- the network may determine the priority for each frequency and notify the terminal. Upon receiving this priority, the UE considers this priority prior to the radio signal quality criteria in the cell reselection process.
- MTC machine type communication
- MTC means communication between a machine and a machine without human intervention
- the terminal used for the MTC is an MTC device.
- MTC is also called M2M (Machine to Machine).
- the services provided through the MTC are different from those in the existing human communication, and there are various categories of services as follows. For example, services such as tracking, metering, payment systems, healthcare services, remote control, and the like are provided by the MTC.
- MTC 7 is a diagram for explaining the structure of machine type communication (MTC).
- the MTC device communicates with another MTC device or MTC server through a mobile communication network.
- the MTC server may provide the MTC user with metering, road information, and user electronic device adjustment, which are services provided through the MTC device.
- the MTC device may be referred to as a delay tolerant access support terminal.
- the timer T300 is used during the RRC connection establishment process.
- the terminal drives the timer T300 while transmitting the RRC connection request message.
- the RRC connection setup message or the RRC connection rejection message is received, the cell reselection, or the interruption of the RRC connection establishment by the higher layer occurs, the driving of the T300 is stopped.
- the RRC layer of the UE informs that the RRC connection establishment has failed to a higher layer, and terminates the RRC connection establishment procedure.
- the T300 is a cell specific parameter broadcast through a timer system information block type 2 (SIB2), and is a value common to all terminals.
- SIB2 timer system information block type 2
- T300 is a value in the range of 100 ms to 2 s. Therefore, if the delay tolerance access terminal, that is, MTC terminal, the value of the T300 tends to be too short.
- the terminal receives a timer value for a specific purpose and a timer value for the general purpose through the system information, and uses a timer value for a specific purpose when connected to the network for a specific purpose
- a timer value for a general purpose when connecting to a network for a purpose other than a specific purpose, it is suggested to use a timer value for a general purpose.
- Both the specific purpose timer and the general purpose timer may be broadcasted through SIB2, or the specific purpose timer may be broadcasted through a type SIB, unlike the general purpose timer.
- the specific purpose timer has a longer value than the general purpose timer.
- the first embodiment of the present invention it is proposed to separately receive the cell-specific timer T300 and the specific timer T30X for the MTC terminal from the network.
- FIG. 8 is a diagram illustrating an RRC connection process between an MTC terminal and a network according to a first embodiment of the present invention.
- the MTC terminal may receive a cell specific timer T300 and a specific timer T30X from the network through SIB2 in step 801 for an RRC connection establishment procedure.
- the terminal receiving the SIB2 stores the cell specific timer T300 and the specific timer T30X in step 802.
- the terminal If the MTC terminal intends to perform an RRC connection establishment procedure for one of MTC related procedures, delayed-tolerant access, and subordinated access instead of the normal connection, the terminal starts driving of a specific timer T30X.
- the terminal starts driving the cell specific timer T300. Therefore, the cell specific timer T300 and the specific timer T30X cannot be driven at the same time.
- the UE transmits to the network an RRC connection request message in which the establishment cause is set to one of an MTC connection, a delay-tolerant connection, and a subordinated connection in step 803. Thereafter, the terminal and the network may start driving the specific timer T30X.
- the terminal may receive an RRC connection setup message from the network as shown in step 804, and may transmit an RRC connection setup complete message to the network as shown in step 805 in response thereto.
- the UE After transmitting or transmitting the RRC connection setup complete message to the network, the UE notifies that the RRC connection establishment process has succeeded to a higher layer, and terminates the RRC connection establishment process.
- the specific timer T30X may stop. Specifically, the specific timer T30X may be stopped when receiving the RRC connection setup message, when the RRC connection setup complete message is transmitted, or when a positive response to the RRC connection setup complete message is received. T30X may be stopped.
- the UE informs that the RRC connection establishment process has failed to a higher layer as in step 806, and terminates the RRC connection establishment process. .
- the cell-specific timer T300 from the network, but to apply a different value to the T300 during the RRC connection establishment process for a specific purpose.
- FIG. 9 is a diagram illustrating an RRC connection process between an MTC terminal and a network according to a first embodiment of the present invention.
- the MTC terminal may receive a cell specific value of T300 and a specific value for the MTC terminal from the network through SIB2 for an RRC connection establishment procedure.
- the UE Upon receiving the SIB2, the UE stores a cell specific value of T300 and a specific value for the MTC terminal in step 902.
- the terminal sets the specific value in T300 as in step 903.
- the terminal sets the cell specific value in T300 as in step 903.
- step 904 the UE transmits an RRC connection request message to the network in which the establishment cause is set to one of an MTC connection, a delay resistant connection, and a subordinated connection. Thereafter, the terminal and the network may start driving the timer T300 set to the specific value.
- the terminal may receive an RRC connection setup message from the network as shown in step 905, and in response thereto, may transmit an RRC connection setup complete message to the network as shown in step 906.
- the UE After transmitting or transmitting the RRC connection setup complete message to the network, the UE notifies that the RRC connection establishment process has succeeded to a higher layer, and terminates the RRC connection establishment process.
- the timer T300 set to the specific value may be stopped, and specifically, when receiving an RRC connection setup message, when transmitting an RRC connection setup complete message or when receiving a positive response to the RRC connection setup complete message.
- the timer T300 set to the specific value may be stopped.
- the UE informs that the RRC connection establishment process has failed to the higher layer as shown in step 907, the RRC connection establishment process To exit.
- FIG. 10 illustrates a block diagram of a communication device according to an embodiment of the present invention.
- the communication apparatus 1000 includes a processor 1010, a memory 1020, an RF module 1030, a display module 1040, and a user interface module 1050.
- the communication device 1000 is illustrated for convenience of description and some modules may be omitted.
- the communication apparatus 1000 may further include necessary modules.
- some modules in the communication apparatus 1000 may be classified into more granular modules.
- the processor 1010 is configured to perform an operation according to the embodiment of the present invention illustrated with reference to the drawings. In detail, the detailed operation of the processor 1010 may refer to the contents described with reference to FIGS. 1 to 9.
- the memory 1020 is connected to the processor 1010 and stores an operating system, an application, program code, data, and the like.
- the RF module 1030 is connected to the processor 1010 and performs a function of converting a baseband signal into a radio signal or converting a radio signal into a baseband signal. To this end, the RF module 1030 performs analog conversion, amplification, filtering and frequency up-conversion, or a reverse process thereof.
- the display module 1040 is connected to the processor 1010 and displays various information.
- the display module 1040 may use well-known elements such as, but not limited to, a liquid crystal display (LCD), a light emitting diode (LED), and an organic light emitting diode (OLED).
- the user interface module 1050 is connected to the processor 1010 and can be configured with a combination of well-known user interfaces such as a keypad, a touch screen, and the like.
- embodiments of the present invention have been mainly described based on data transmission / reception relations between a terminal and a base station.
- Certain operations described in this document as being performed by a base station may in some cases be performed by an upper node thereof. That is, it is obvious that various operations performed for communication with the terminal in a network including a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station.
- a base station may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like.
- Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
- an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- processors controllers, microcontrollers, microprocessors, and the like.
- an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above.
- the software code may be stored in a memory unit and driven by a processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
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- Computer Networks & Wireless Communication (AREA)
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Abstract
Description
Claims (16)
- 무선 통신 시스템에서 단말이 네트워크와 연결을 설정하는 방법에 있어서,상기 네트워크로부터 시스템 정보를 통하여 복수의 타이머 값들을 수신하는 단계; 및상기 네트워크로 특정 연결 이유를 포함하는 연결 요청 메시지를 송신하는 단계를 포함하고,상기 복수의 타이머 값들 각각은 대응하는 연결 이유에 따라 상기 연결 요청 메시지 송신 시 이용되며,상기 특정 연결 이유는 상기 복수의 타이머 값들 중 특정 타이머 값에 대응하는 것을 특징으로 하는,연결 설정 방법.
- 제 1 항에 있어서,상기 복수의 타이머 값들은,하나의 타이머를 위한 것을 특징으로 하는,연결 설정 방법.
- 제 1 항에 있어서,상기 복수의 타이머 값들 각각은,대응하는 타이머를 위한 것을 특징으로 하는,연결 설정 방법.
- 제 2 항에 있어서,상기 하나의 타이머는 T300 타이머인 것을 특징으로 하는,연결 설정 방법
- 제 1 항에 있어서,상기 특정 연결 이유는,MTC(Machine type communication) 접속, 지연 내성 접속 및 후순위 접속 중 적어도 하나인 것을 특징으로 하는,연결 설정 방법.
- 제 1 항에 있어서,상기 시스템 정보는 시스템 정보 블록 타입 2 (system information block type 2; SIB2)인 것을 특징으로 하는,연결 설정 방법.
- 제 1 항에 있어서,타이머를 구동하는 단계; 및특정 조건 만족 시, 상기 구동된 타이머를 중지하는 단계를 더 포함하며,상기 특정 조건은 연결 설정 메시지 수신, 연결 거절 메시지 수신, 셀 재선택 및 상위계층으로부터의 연결 수립 취소 중 적어도 하나인 것을 특징으로 하는,연결 설정 방법.
- 제 1 항에 있어서,타이머를 구동하는 단계; 및상기 구동된 타이머가 만료되는 단계를 더 포함하며,상기 타이머 만료 시, 상위 계층으로 연결 수립 절차의 실패를 알리는 것을 특징으로 하는,연결 설정 방법.
- 제 1 항에 있어서,상기 특정 타이머 값은,상기 복수의 타이머 값들 중 가장 큰 것을 특징으로 하는,연결 설정 방법.
- 무선 통신 시스템에서 네트워크가 단말과 연결을 설정하는 방법에 있어서,상기 단말로 시스템 정보를 통하여 복수의 타이머 값들을 송신하는 단계; 및상기 단말로부터 특정 연결 이유를 포함하는 연결 요청 메시지를 수신하는 단계를 포함하고,상기 복수의 타이머 값들 각각은 대응하는 연결이유에 따라 상기 단말이 상기 연결 요청 메시지 송신 시 이용되며,상기 특정 연결 이유는 상기 복수의 타이머 값들 중 특정 타이머 값에 대응하는 것을 특징으로 하는,연결 설정 방법.
- 제 10 항에 있어서,상기 복수의 타이머 값들은,하나의 타이머를 위한 것을 특징으로 하는,연결 설정 방법.
- 제 10 항에 있어서,상기 복수의 타이머 값들 각각은,대응하는 타이머를 위한 것을 특징으로 하는,연결 설정 방법.
- 제 11 항에 있어서,상기 하나의 타이머는 T300 타이머인 것을 특징으로 하는,연결 설정 방법.
- 제 10 항에 있어서,상기 특정 연결 이유는,MTC(Machine type communication) 접속, 지연 내성 접속 및 후순위 접속 중 적어도 하나인 것을 특징으로 하는,연결 설정 방법.
- 제 10 항에 있어서,상기 시스템 정보는 시스템 정보 블록 타입 2 (system information block type 2; SIB2)인 것을 특징으로 하는,연결 설정 방법.
- 제 10 항에 있어서,상기 특정 타이머 값은,상기 복수의 타이머 값들 중 가장 큰 것을 특징으로 하는,연결 설정 방법.
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EP12768476.9A EP2696642A4 (en) | 2011-04-08 | 2012-04-06 | METHOD FOR THE ESTABLISHMENT BY A USER EQUIPMENT OF A CONNECTION WITH A NETWORK IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF |
US14/110,244 US20140029594A1 (en) | 2011-04-08 | 2012-04-06 | Method for user equipment setting connection with network in wireless communication system and apparatus for same |
KR1020137018482A KR20140032981A (ko) | 2011-04-08 | 2012-04-06 | 무선 통신 시스템에서 단말이 네트워크와 연결을 설정하는 방법 및 이를 위한 장치 |
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US61/473,173 | 2011-04-08 |
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WO2012138171A3 WO2012138171A3 (ko) | 2013-01-10 |
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EP (1) | EP2696642A4 (ko) |
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KR20140032981A (ko) | 2014-03-17 |
EP2696642A2 (en) | 2014-02-12 |
EP2696642A4 (en) | 2015-12-30 |
US20140029594A1 (en) | 2014-01-30 |
WO2012138171A3 (ko) | 2013-01-10 |
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