KR20170112552A - A method and apparatus for configuring radion connection in wireless communication system - Google Patents

Abstract

The present invention relates to a connection establishment method and apparatus in a wireless communication system, and more particularly, to a method and apparatus for allocating resources to a terminal when establishing a connection with the terminal. According to an aspect of the present invention, there is provided a method of establishing a connection of a terminal in a wireless communication system according to an embodiment of the present invention, ; Transmitting a message including the set data size information to the base station; And establishing a connection with the base station using resources allocated based on the data size information. This disclosure relates to a communication technique and system thereof that fuses a 5G communication system with IoT technology to support higher data rates than 4G systems. This disclosure is based on 5G communication technology and IoT related technology, and can be applied to intelligent services such as smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, ). ≪ / RTI >

Description

TECHNICAL FIELD [0001] The present invention relates to a method and apparatus for establishing a connection in a wireless communication system,

The present invention relates to a connection establishment method and apparatus in a wireless communication system, and more particularly, to a method and apparatus for allocating resources to a terminal when establishing a connection with the terminal.

Efforts are underway to develop an improved 5G or pre-5G communication system to meet the growing demand for wireless data traffic after commercialization of the 4G communication system. For this reason, a 5G communication system or a pre-5G communication system is called a system after a 4G network (Beyond 4G network) communication system or after a LTE system (Post LTE). To achieve a high data rate, 5G communication systems are being considered for implementation in very high frequency (mmWave) bands (e.g., 60 gigahertz (60GHz) bands). In order to mitigate the path loss of the radio wave in the very high frequency band and to increase the propagation distance of the radio wave, in the 5G communication system, beamforming, massive MIMO, full-dimension MIMO (FD-MIMO ), Array antennas, analog beam-forming, and large scale antenna technologies are being discussed. In order to improve the network of the system, the 5G communication system has developed an advanced small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network, (D2D), a wireless backhaul, a moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation Have been developed. In addition, in the 5G system, the Advanced Coding Modulation (ACM) scheme, Hybrid FSK and QAM Modulation (FQAM) and Sliding Window Superposition Coding (SWSC), the advanced connection technology, Filter Bank Multi Carrier (FBMC) (non-orthogonal multiple access), and SCMA (sparse code multiple access).

On the other hand, the Internet is evolving into an Internet of Things (IoT) network in which information is exchanged between distributed components such as objects in a human-centered connection network where humans generate and consume information. IoE (Internet of Everything) technology, which combines IoT technology with big data processing technology through connection with cloud servers, is also emerging. In order to implement IoT, technology elements such as sensing technology, wired / wireless communication, network infrastructure, service interface technology and security technology are required. In recent years, sensor network, machine to machine , M2M), and MTC (Machine Type Communication). In the IoT environment, an intelligent IT (Internet Technology) service can be provided that collects and analyzes data generated from connected objects to create new value in human life. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliance, and advanced medical service through fusion of existing information technology . ≪ / RTI >

Accordingly, various attempts have been made to apply the 5G communication system to the IoT network. For example, technologies such as sensor network, machine to machine (M2M), and machine type communication (MTC) are implemented by techniques such as beamforming, MIMO, and array antennas, which are 5G communication technologies will be. The application of the cloud RAN as the big data processing technology described above is an example of the convergence of 5G technology and IoT technology.

On the other hand, technologies for low throughput, low power IoT (Internet of Things) terminals discussed in the 3GPP and other wireless network technology standards define energy efficient operation with the main goal of long term operation of each terminal without battery exchange And aims to simplify overall resource management. In this case, it is necessary to support connection of a plurality of terminals in consideration of resource utilization efficiency in limited resources.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a connection setting and a resource allocation method according to a specific traffic characteristic of a wireless communication terminal.

According to an aspect of the present invention, there is provided a method of establishing a connection of a terminal in a wireless communication system according to an embodiment of the present invention, ; Transmitting a message including the set data size information to the base station; And establishing a connection with the base station using resources allocated based on the data size information.

According to another aspect of the present invention, there is provided a method of establishing a connection of a base station in a wireless communication system, the method comprising: transmitting setting information of data size information to a terminal; Receiving a message including data size information of data to be transmitted by a UE determined based on the setting information; And allocating resources to the UE based on the data size information and establishing a connection.

According to another aspect of the present invention, there is provided a terminal for establishing a connection in a wireless communication system, comprising: a communication unit for transmitting and receiving signals; And determining a data size of the data to be transmitted by the mobile station based on the data size information received from the base station, transmitting a message including the set data size information to the base station, And a control unit for controlling establishment of a connection with the base station using the resources.

According to another aspect of the present invention, there is provided a base station for establishing a connection in a wireless communication system, comprising: a communication unit for transmitting and receiving signals; And transmitting the setting information of the data size information to the terminal, receiving a message including data size information of data to be transmitted by the terminal determined based on the setting information, allocating resources to the terminal based on the data size information, And a control unit for controlling establishment of a connection.

According to the embodiment of the present invention, efficiency of transmission / reception resource consumption of a terminal supported for connection of radio resources can be increased. In addition, there is an effect of reducing power consumption by reducing the time for terminals to remain unnecessarily in connection with the existing technology.

FIG. 1 is a diagram illustrating a method for a base station to control connection between terminals based on information set and transmitted by a terminal according to an embodiment of the present invention. Referring to FIG.
FIG. 2 is a diagram illustrating operations between a terminal and a base station according to an embodiment of the present invention.
3 is a block diagram illustrating an internal structure of a terminal according to an embodiment of the present invention.
4 is a block diagram illustrating an internal structure of a base station according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of well-known functions and constructions that may obscure the gist of the present invention will be omitted.

In describing embodiments of the present invention in detail, a 3GPP communication system including eMTC (Machine Type Communication) and NB-IoT (Narrowband-Internet of Things) systems supporting Cellular IoT (Internet of Things) It is to be understood that the subject matter of the present invention is also applicable to other communication systems having similar technical background and channel form with slight modifications within the scope of the present invention without departing from the scope of the present invention, It will be possible at the discretion of the person skilled in the art.

In the following description of the exemplary embodiments of the present invention, descriptions of known techniques that are well known in the art and are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated. Also, the size of each component does not entirely reflect the actual size. In the drawings, the same or corresponding components are denoted by the same reference numerals.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

At this point, it will be appreciated that the combinations of blocks and flowchart illustrations in the process flow diagrams may be performed by computer program instructions. These computer program instructions may be loaded into a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, so that those instructions, which are executed through a processor of a computer or other programmable data processing apparatus, Thereby creating means for performing functions. These computer program instructions may also be stored in a computer usable or computer readable memory capable of directing a computer or other programmable data processing apparatus to implement the functionality in a particular manner so that the computer usable or computer readable memory The instructions stored in the block diagram (s) are also capable of producing manufacturing items containing instruction means for performing the functions described in the flowchart block (s). Computer program instructions may also be stored on a computer or other programmable data processing equipment so that a series of operating steps may be performed on a computer or other programmable data processing equipment to create a computer- It is also possible for the instructions to perform the processing equipment to provide steps for executing the functions described in the flowchart block (s).

In addition, each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing the specified logical function (s). It should also be noted that in some alternative implementations, the functions mentioned in the blocks may occur out of order. For example, two blocks shown in succession may actually be executed substantially concurrently, or the blocks may sometimes be performed in reverse order according to the corresponding function.

Herein, the term " part " used in the present embodiment means a hardware component such as software or an FPGA or an ASIC, and 'part' performs certain roles. However, 'part' is not meant to be limited to software or hardware. &Quot; to " may be configured to reside on an addressable storage medium and may be configured to play one or more processors. Thus, by way of example, 'parts' may refer to components such as software components, object-oriented software components, class components and task components, and processes, functions, , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and components may be further combined with a smaller number of components and components or further components and components. In addition, the components and components may be implemented to play back one or more CPUs in a device or a secure multimedia card.

In order to efficiently transmit a small amount of data in a wireless communication system, the following scheme can be adopted. That is, the base station may use a small data transmission method through a Signaling Radio Bearer (SRB) in the control plane or suspend and resume RRC connection in the user plane resume method.

In addition, the base station can provide a periodic scheduling request apparatus and method for a terminal in a connected state. That is, a resource for a user-specific scheduling request is allocated to each terminal in the control channel region, and a scheduling request and a setting of buffer status reporting (timer operation) Etc.). Thereafter, the UE is configured to perform a random access operation when a resource allocation request fails.

Hereinafter, when a base station supports a plurality of terminal connections in a limited resource, it is necessary to increase the efficiency of resource utilization and to make a connection for a short time for a small amount of information transmission, there is a problem that invites frequency inefficiency and terminal power waste or other problems A connection establishment method and a resource allocation method according to a specific traffic characteristic of a terminal will be described.

FIG. 1 is a diagram illustrating a method for a base station to control connection between terminals based on information set and transmitted by a terminal according to an embodiment of the present invention. Referring to FIG.

The base station 110 includes system information x including a data level indication (DVI) size level table, where x is any system information defined in 3GPP, (SIBx-nb in case of NB-IoT) (S120). The data size indicator may refer to an indicator indicating information on the size of data to be transmitted from the terminal 100 to the base station 110. The DVI size level table refers to a table in which a quantized step according to an available UL transmission message size is set in advance in a table.

Table 1 below shows a general form of the DVI size level table, and Table 2 shows a DVI size level table when 4-bit DVI is used.

DVI Index Criteria on the data volume (in bytes / octets) 0 0 < = D < = v1 One v1 < D < = v2 : : V v_ {V-1} <D <= v_ {V}

DVI index Criteria on the data volume (in bytes / octets) 0 D = 0 One 0 < D < = v1 2 v1 < D < = v2 3 v2 < D < = v3 4 v3 < D < = v4 5 v4 < D < = v5 6 v5 <D <= v6 7 v6 <D <= v7

The base station 110 may provide the following information to the terminal along with the DVI size level table.

1. Supporting base station's CP / UP solution

- Conversion of CP / UP solution of terminal with RRC Release

- Tell SI

2. Conditions for setting DVI

For example, a threshold value for a data size other than a threshold used in the DVI size level table (for example, v1, 2, 3, ... in the table below) Can be designed and influenced. For example, in order to transmit the size of the message (Dedicated NAS in RRC Msg5) and the NAS data thereafter, which can be contained in the message 5 (RRC Connection Establishment Complete, RRC Resume Complete) in which the actual uplink data can be transmitted Can be designed to be influenced by the size of the message that can be contained in the ULInformationTransfer used.

 In addition, the BS 110 may transmit the information described above through an indication included in the system information, i.e., SIB, and may be transmitted using the following method.

1. Part of the content of the RRC connection release message

2. Part of the contents of the RRC connection suspend message

3. Part of the contents of the RRC connection reject message

4. Save the user defined value to terminal and base station

5. Update with Paging message

6. Set using the transmission information size pattern of the terminal and the past transmission data information

7. Other downlink control and data signals

In operation S135, the terminal 100 may detect whether data is generated or not in operation S130. If data is generated, the terminal 100 may determine the DVI setting condition based on the information transmitted by the base station in operation S135. Then, the terminal 100 can configure and configure the DVI (S140).

More specifically, the terminal 100 can set the DVI according to a predetermined condition included in the DVI size level table received from the base station, with respect to data requiring transmission / reception. The method of setting the DVI and the information on the condition may include various examples and combinations of the following.

1. Size and range of sending and receiving data

- Units: for example, in bits / bytes / octets, as a number of NAS messages, ...

2. Size of the primary message delivered by the NAS layer

3. CP / UP solution preference

4. Early RRC connection release preference at RRC or MAC layer

5. Single-tone or multi-tone usage preference information

6. A message transmitted from an upper layer and an establishment cause set according to the message

7. It is checked whether there is information to be transmitted by the terminal at the time when a uplink control signal (for example, a Tracking Area Update) defined to occur in advance or mandatory in a specific situation occurs, DVI is set when there is transmission information, Notification that there is delivery information.

8. Preference information for Multi-PRB or Single PRB operation

The method of setting the DVI and information on the conditions will be described in more detail as follows.

First, in an embodiment of the present invention, the quantized step according to the available UL transmission size may be preset in the received DVI size level table, and the DVI index corresponding to each step may be transmitted to the base station.

In another embodiment of the present invention, the DVI index can be set to a bitmap format in the following DVI field. In this case, a bitmap for various information can be added according to DVI contents and format.

In another embodiment of the present invention, DVI can be set as follows when the size of the transmission data is larger than the size of a predetermined NAS layer message frame (e.g., Dedicated NAS in RRC Msg5).

- 1-bit indicator

- Use table similar to size level table (Table 3)

DVI index Criteria on the data volume (in bytes / octets) 0 0 < D < = size ( DedicatedNASInfo ) One size ( DedicatedNASInfo ) < D

In another embodiment of the present invention, if the size of transmission scheduled data is larger or smaller than a threshold for a predetermined data size, DVI can be set as follows.

For example: If D> Dth, Set DVI to corresponding DVI index;

An example of a method for determining the range of uplink transmission information Dth:

Based on the history of the amount of UL data transferred, determine the value of D.

Keep, at the device, a table composed of [x] entries where each entry contains the amount of data transferred in the uplink

- At the end of each UL transfer, update the value of D as, for example:

-Averaged value of D since initial attach

-Value of D averaged over the last [x] number of transfers

Alternatively, according to another embodiment of the present invention, information on the number of uplink messages to be available to the UE can be transmitted as shown in Table 4 below.

Number of RRC Msg5 No. of ULInformationTransfer messages One x

According to another embodiment of the present invention, DVI can be set as follows based on a message delivered from an upper layer and a connection reason set according to the message.

When the RRC establishment cause is transmitted to the RRC layer with mo-signaling together with the NAS signaling message (attach request, tacking area update, etc.), or when the RRC resume procedure is performed to resume the paused DRB connection, Set DVI in Msg3 to 0 (or NULL); Or disable DVI on RRC Msg3; Or a combination of the above examples may be used. In the above operation, the terminal and the base station can perform an existing radio bearer connection operation.

In another embodiment of the present invention, it is checked whether there is information to be transmitted by the terminal at a time when an uplink control signal (for example, a tracking area update) defined in advance or mandatory in a specific situation occurs, DVI can be set as below. An RRC connection is established to transmit NAS signaling such as tracking area update, and other information defined by the UE to perform mandatory operations, and when data transmission / reception is completed, an operation of confirming and transmitting / receiving the existence of UE transmission / For example, the transmission / reception data information can be transmitted by the following means.

-RRC UL / DL information element of InfoTransfer message;

-Indication in physical control channel or MAC CE / header.

The terminal 100 may transmit a message including the DVI information to the BS 110 in operation S150. The message may include radio resource connection (RRC) MSG 3 as shown in FIG. 1, but this is not limitative of one embodiment. According to the above example, when included in the RRC message (Msg3), the DVI information element may be a mandatory or optional inclusion.

DVI contents and formats, and the contents and formats may include the following examples and combinations thereof.

One. A DVI index or bitmap format indicating a quantized step according to the size of the available uplink transmission message

2. 1-bit flag indicating CP / UP solution preference

3. 1-bit flag indicating early connection termination preference information

4. A 1-bit flag indicating a data transfer intention of a predetermined size

5. N-bit flag indicating the actual data size

6. An n-bit flag indicating a predetermined number of RRC messages

7. UE capability information

The location at which the DVI content is used may include the following various examples and combinations thereof.

One. An information element (e.g., RRC Msg3) in an RRC message using a specific condition

2. MAC message, MAC header, or part of a MAC control element

3. Acknowledgment or non-acknowledgment multiplexing in the MAC layer

The base station 110 may perform a connection operation between the terminals 100 based on the received DVI information at step S155. The BS 110 may perform an operation for using the CP solution or an operation for determining whether to perform an additional RRC setting for using the UP solution.

Thereafter, the UE 100 can establish an RRC connection according to the RRC connection setup information of the Msg 4 received from the base station through the connection. At this time, the UE 100 may include setup information for a multi-PRB operation such as an Additional PRB . In addition, the MS 100 may receive the scheduling information transmitted by the BS 100 and may perform a plurality of data transmission operations on the allocated resources (S160). At this time, the contents of the buffer status information can be transmitted when the transmission data existing in the transmission buffer of the receiver and the additional transmission data are generated. In this case, an operation similar to the buffer status reporting (BSR) operation can be performed in an LTE based system.

 Thereafter, when the terminal 100 transmits the last data (S165), the base station 110 may recognize that the terminal 100 has transmitted the last data based on the DVI information received in step S150 S170). That is, the base station can recognize that the last data has been transmitted by sensing the amount of data received based on the DVI. Thereafter, the BS 110 may transmit an RRC connection release message to the MS in step S170. At this time, the timing of the release of the connection release may include waiting time for the possibility that the UE should receive feedback information such as IP-ACK and RLC ACK. More specifically, in the CP solution, the UP solution, and the existing DRB-based connection, the BS receives all RRC messages sent by the UE and transmits them to the network; (IP-ACK, DL data transfer, etc.) from the network. The base station receives a response from the network in response to the inquiry, and transmits data to be transmitted by the terminal If it does not exist, it can send an RRC connection release message to the terminal. Also, although not shown in FIG. 1, when the BS recognizes that the UE has transmitted the last data, the BS can control the timing to transmit a DRX operation entry command to the UE by giving an indication to the MAC layer. The DRX operation command may include a short DRX command and a long DRX command MAC CE.

Meanwhile, the BS may perform an access termination operation using the Buffer Status Report (BSR) transmitted from the MS in the MAC layer. For example, the UE may terminate the connection immediately after uploading all the data stored in the buffer or after receiving the HARQ Feedback from the base station. At this time, the base station can instruct the end of transmission operation of the terminal in advance. In addition, the BS can estimate a time point at which the buffer size of the UE becomes 0 by comparing the BSR value received in the previous data reception procedure with the size of the resource to be allocated. The UE can be set to transmit the BSR only when the buffer size falls below a certain threshold value. When the terminal &apos; s buffer is expected to be emptied, the base station may transmit a transmission termination command with a UL resource allocation.

Meanwhile, examples of various environments in which the above operations can be applied include various RF chains, various PRB usage environments, and the like.

This means that a radio resource control signal (RRC Signaling) is received from an arbitrary PRB (Physical Resource Block) and the reception operation in another PRB or another RF chain is controlled through the RRC signaling.

Upon receiving the early connection end preference information and the DVI information from the above described arbitrary signal in the first PRB, an amount of data set in the DVI on the other second PRB is received, DRX operation is not supported, or the corresponding period is shortened, or it is possible to directly enter the idle mode. In addition, in the first PRB, the CP / UP flag information, the early RRC connection release preference in the RRC or MAC layer, the single-tone or multi-tone preference flag information, and the DVI information are received, , The RF activation operation in the second PRB, the connected DRX control operation, the idle mode entry operation, and the used data transmission / reception method (Control Plane Solution, User Plane Solution) can be controlled.

Here, the first PRB may be referred to as anchor PRB as a PRB for transmitting a broadcast signal (a synchronization signal (PSS / SSS), a system information signal (PBCH), etc.) and a random access channel (PRACH) or a control signal.

Here, the second PRB is mainly referred to as a Non-Anchor PRB as a PRB for transmitting a downlink control channel (PDCCH) and a data transmission channel (PDSCH).

The presence or absence of the Multi-PRB operation can be determined by the channel status of the UE, the Coverage Level, the service of the UE, the preference of the UE, and the BS designation.

Here, the MS may be transmitted according to the MS's preference or the uplink signals of the MS, i.e., the MSG 1 (PRACH) and the MSG 3 (RRC Connection Request / Resume Request / Reestablishment Request), when it is determined by the service.

Here, the coverage level is a value that is graded on the basis of the RSRP signal strength obtained from the synchronization signal received from the base station or the reference signal.

The following describes the conditions for repeating the Single PRB mode in the Multi-PRB mode.

Here, the Multi-PRB operation is performed by anchor PRB up to MSG 1, 2, 3, and 4, and thereafter the MSG 5, the NAS data transmission, the data transmission from the resumed DRB, and the RRC connection release / However, if the following conditions are satisfied in the non-anchor PRB, the PRACH is performed again with the anchor PRB to perform the re-connection.

(Condition 1) X-occurrence of NACK, transmission / reception

(Condition 2) RLF (Radio Link Failure) occurs

(Condition 3) Non-Anchor When the signal level received from RS (Reference Signal) of PRB is below a certain level

Hereinafter, a method for selecting Non-Anchor PRB among Multi-PRBs will be described.

When operating in LTE or an existing system in Inband or Guard Band mode, the BS shall limit the measurement to the UE. This information can be informed by system information, dedicated signaling (eg RRC Connection Release / Suspend, RRC connection reconfiguration, other RRC signaling), downlink control / data signal through PDCCH or PDSCH have.

Then, the terminal operates in an anchor PRB or operates as a non-anchor PRB, measures the corresponding measurement target cell or frequency list received from the base station through the measurement setup information specified by the base station, do. This report can be made through MSG 3, MSG 5, or RRC signaling through RRC Reconfiguration.

Then, the base station randomly selects a cell or a frequency having the best signal level among the N or the best N cells or frequency, and sets the corresponding cell or frequency as the next non-anchor PRB. Such Update information is reflected in MSG 4 and can be delivered to the UE.

FIG. 2 is a diagram illustrating operations between a terminal and a base station according to an embodiment of the present invention.

The terminal 200 can perform a random access operation with the base station 210 (S220). As described above with reference to FIG. 1, the terminal 200 can receive the DVI size level table information, the CP support information of the base station and the DVI setup condition from the BS 210 in advance.

Then, the UE 200 can determine the DVI index mapped to the closest value based on the data size of the UL transmission buffer and the DVI size level table previously received from the BS through the System Information x, The DVI index can be modified and determined according to each preference information.

Then, the terminal 200 may transmit the RRC Msg3 including the DVI index information to the BS 210. [ In this case, the terminal 200 can transmit various information according to the contents and format of the DVI, which is the same as described in step S150 of FIG.

The BS 210 may construct MSG 4 through the DVI index of the MSG 3 and transmit the MSG 4 (S235). After receiving the MSG 4, the MS 200 determines parameter and resource information of the RRC, RLC, and MAC layer according to the corresponding setting information, and transmits the CP (Control Plane), UP (User Plane) ) And transmit the data (S240, S250). For example, if the CP solution is used, a part of the data size set in the DVI is transmitted to the MSG 5 through the NAS, and if the data set in the DVI is not transmitted through the MSG 5, The UL uplink data can be further transmitted through the UL Info Transfer.

In case of UP Solution, some or all of the data size set in DVI is allocated to DRB and transferred. If all of the DRBs can not be loaded, DRB radio resource information can be allocated and transmitted through the additional Uplink Grant.

In FIG. 2, if the CP solution is selected and the DVI size level table has 8 steps (DVI total 4 bits) and each threshold of the DVI size level table indicates the number of uplink transmissions including the MSG 5, 3 &lt; / RTI &gt; is selected, a total of three transmissions are shown.

After receiving the uplink data set through the DVI index, the BS 210 determines whether the last data is transmitted (End of Transmission) (S260). That is, in FIG. 2, the base station can determine that the last data is transmitted when uplink data is received three times in total. In step S275, the terminal 200 transmits an RRC Connection Release to the idle mode to enter the idle mode in step S275. If Connected DRX is set in the terminal, the Connected DRX can be set to be short. If the UE needs to receive an ACK from the BS, the BS can transmit an RRC Connection Release message considering the corresponding ACK reception period. If the UE receives a NACK from the Node B, the Node B terminates the RRC early termination (early RRC Connection Release transmission) operation and can perform the existing operation (Connected DRX application or Downlink Control Signal Monitoring while staying in Connected interval) have.

The RRC Msg3 referred to in the present invention includes all of RRC messages for establishing RRC connection such as Connection Request, Resume Request (in the case of UP solution), Re-establishment Request and Re-configuration Request.

RRC Msg4 includes all RRC messages for further modifying RRC connection setup such as RRC Connection Setup, Resume (in case of UP solution), Re-establishment Request, Re-configuration.

3 is a block diagram illustrating an internal structure of a terminal according to an embodiment of the present invention.

More specifically, the terminal may include a communication unit 300, a storage unit 310, and a control unit 320.

The communication unit 300 may transmit and receive a signal necessary for the terminal to perform the operation according to the present invention. More specifically, the communication unit 300 may receive information including a data size level table for setting data size information from the base station. In addition, the communication unit 300 may transmit the RRC message 3 including the data size information set by the controller 320 to the BS. The communication unit 300 receives the RRC message 4 from the BS, and can transmit the RRC message 5 and data based on the connection setup between the MS and the BS. Also, the communication unit 300 may receive an RRC connection release message from the base station.

The storage unit 310 may store information for the MME to perform operations according to the present invention. The storage unit 310 may store information received from the communication unit 300. In addition, the storage unit 310 may transmit the stored information to the controller 320.

The control unit 320 determines the data size information of the data to be transmitted by the mobile station based on the setting information of the data size information received from the base station and transmits a message including the set data size information to the base station, And to control establishment of a connection with the base station using the allocated resources based on the information. Transmits the data using the connection, and controls reception of the release message of the connection from the base station, and the release message can be transmitted based on the set data size information. In addition, the setting information of the data size information is included in the system information, and the message including the set data size information may include a radio resource control (RRC) message 3. The channel through which the message including the set data size information is transmitted and the channel through which the connection release message is received may be different from each other.

4 is a block diagram illustrating an internal structure of a base station according to an embodiment of the present invention.

More specifically, the base station may include a communication unit 400, a storage unit 410, and a control unit 420.

The communication unit 400 may transmit and receive signals necessary for the terminal to perform the operation according to the present invention. More specifically, the communication unit 400 may transmit information including a data size level table for setting data size information to the terminal. Also, the communication unit 400 may receive the RRC message 3 including the data size information from the terminal. The communication unit 400 may transmit an RRC message 4 including connection setting information based on the data size information to the MS. The BS can receive the RRC message 5 and data based on the connection setup between the MS and the BS. Also, the communication unit 400 may transmit an RRC connection release message to the UE.

The storage unit 410 may store information for the MME to perform operations according to the present invention. The storage unit 410 may store information received from the communication unit 400. In addition, the storage unit 410 may transmit the stored information to the controller 320.

The control unit 420 transmits setting information of data size information to the terminal, receives a message including data size information of data to be transmitted by the terminal determined based on the setting information, Allocate resources, and set up connections.

The control unit 420 receives the data using the connection, determines whether the last data of the data is received based on the data size information, and when the last data of the data is received, And can receive the connection release message to the terminal.

In the embodiments described above, all steps and messages may be subject to selective execution or may be subject to omissions. Also, the steps in each embodiment need not occur in order, but may be reversed. Message passing does not necessarily have to occur in order, and can be reversed. Each step and message can be performed independently.

Some or all of the examples shown in the above-described embodiments are intended to illustrate and explain the embodiments of the present invention in detail. Therefore, the details of the table can be regarded as representing a part of the method and apparatus proposed by the present invention. In other words, it may be desirable that the contents of the tables in this specification be accessed semantically rather than syntactically.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. That is, it will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible.

Claims (20)

A method for establishing a connection of a terminal in a wireless communication system,
Determining data size information of data to be transmitted by a mobile station based on setting information of data size information received from a base station;
Transmitting a message including the set data size information to the base station; And
And establishing a connection with the base station using resources allocated based on the data size information. The method according to claim 1,
Transmitting the data using the connection; And
Receiving a release message of the connection from the base station,
And the release message is transmitted based on the set data size information. 2. The apparatus of claim 1, wherein the setting information of the data size information comprises:
System information. &Lt; Desc / Clms Page number 13 &gt; The method of claim 1, wherein the message including the set data size information comprises:
And a radio resource control (RRC) message (3). 3. The method of claim 2,
Wherein a channel through which a message including the set data size information is transmitted and a channel through which the connection release message is received are different from each other. A method of establishing a connection of a base station in a wireless communication system,
Transmitting setting information of data size information to a terminal;
Receiving a message including data size information of data to be transmitted by a UE determined based on the setting information; And
And allocating resources to the UE based on the data size information and establishing a connection. The method according to claim 6,
Receiving the data using the connection; And
Determining, based on the data size information, whether the last of the data has been received; And
And receiving a release message of the connection to the terminal when the last data of the data is received. 7. The apparatus of claim 6, wherein the setting information of the data size information comprises:
System information. &Lt; Desc / Clms Page number 13 &gt; The method of claim 6, wherein the message including the set data size information comprises:
And a radio resource control (RRC) message (3). 8. The method of claim 7,
Wherein a channel through which a message including the set data size information is transmitted and a channel through which the connection release message is received are different from each other. A terminal establishing a connection in a wireless communication system,
A communication unit for transmitting and receiving signals; And
The mobile station determines data size information of data to be transmitted by the mobile station based on the setting information of the data size information received from the base station and transmits a message including the set data size information to the base station, And controlling the establishment of a connection with the base station using the resource. 12. The apparatus according to claim 11,
Transmitting the data using the connection, controlling reception of the release message of the connection from the base station,
Wherein the release message is transmitted based on the set data size information. 12. The apparatus of claim 11, wherein the setting information of the data size information comprises:
And is included in the system information. The method of claim 11, wherein the message including the set data size information comprises:
And a radio resource control (RRC) message (3). 13. The method of claim 12,
Wherein a channel through which a message including the set data size information is transmitted and a channel through which the connection release message is received are different from each other. A base station establishing a connection in a wireless communication system,
A communication unit for transmitting and receiving signals; And
The mobile station transmits setting information of data size information to the terminal, receives a message including data size information of data to be transmitted by the terminal determined based on the setting information, allocates resources to the terminal based on the data size information, And a control unit for controlling setting of the base station. 17. The apparatus of claim 16,
Determining whether the last data of the data is received based on the data size information, and if the last data of the data is received, And a controller for receiving the message. 17. The method of claim 16, wherein the setting information of the data size information comprises:
Wherein the system information is included in the system information. The method of claim 16, wherein the message including the set data size information comprises:
And a radio resource control (RRC) message (3). 18. The method of claim 17,
Wherein a channel through which a message including the set data size information is transmitted and a channel through which the connection release message is received are different from each other.

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