KR101494907B1 - Method for performing efficient bsr(buffer status report)procedure using sps(semi-persistent scheduling)resource - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system and a terminal for providing a wireless communication service, and more particularly to a wireless communication system for providing a wireless communication service in an evolved universal mobile telecommunications system (E-UMTS) or an LTE system (Long Term Evolution System) In particular, when a UE having allocated a persistent allocation radio resource requests allocation of a radio resource to a base station, the allocation time of the persistent allocation radio resource is compared with the start time of the radio resource requesting process And more particularly to a method for efficiently transmitting a radio resource allocation request without equipment of radio resources.

Wireless communication, terminal, LTE, 3GPP

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a BSR (Buffer Status Report)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system and a terminal for providing a wireless communication service, and more particularly to a wireless communication system for providing a wireless communication service in an evolved universal mobile telecommunications system (E-UMTS) or an LTE system (Long Term Evolution System) In particular, when a UE having allocated a persistent allocation radio resource requests allocation of a radio resource to a base station, the allocation time of the persistent allocation radio resource is compared with the start time of the radio resource requesting process And more particularly to a method for efficiently transmitting a radio resource allocation request without equipment of radio resources.

1 is a diagram illustrating a network structure of an Evolved Universal Mobile Telecommunications System (E-UMTS), which is a conventional mobile communication system to which the present invention is applied. The E-UMTS system evolved from the existing UMTS system and is currently undergoing basic standardization work in 3GPP. The E-UMTS system may be referred to as an LTE (Long Term Evolution) system.

The E-UMTS network can be divided into E-UTRAN and CN. The E-UTRAN includes a User Equipment (hereinafter abbreviated as UE), a base station (abbreviated as eNode B hereinafter), a Serving Gateway (abbreviated as S-GW hereinafter) And a Mobility Management Entity (hereinafter abbreviated as MME) for managing the mobility of the mobile terminal. One eNode B may have more than one cell.

2 and 3 illustrate a structure of a radio interface protocol between a terminal and a base station based on the 3GPP radio access network standard. The wireless interface protocol horizontally comprises a physical layer, a data link layer, and a network layer, and vertically includes a user plane for data information transmission and a control plane And a control plane for signal transmission. The protocol layers are classified into L1 (first layer), L2 (second layer) and L3 (third layer) based on the lower three layers of the Open System Interconnection (OSI) .

Hereinafter, each layer of the wireless protocol control plane of FIG. 2 and the wireless protocol user plane of FIG. 3 will be described.

The physical layer as the first layer provides an information transfer service to an upper layer using a physical channel. The physical layer is connected to a medium access control layer (upper layer) through a transport channel, and data between the medium access control layer and the physical layer moves through the transport channel. Data is transferred between the different physical layers, that is, between the transmitting side and the receiving side physical layer through the physical channel.

The Medium Access Control (MAC) of the second layer provides a service to a radio link control layer that is an upper layer through a logical channel. The second layer of Radio Link Control (RLC) layer supports the transmission of reliable data. The PDCP layer of the second layer is a header compression that reduces the IP packet header size, which is relatively large and contains unnecessary control information, in order to efficiently transmit the IP packet, such as IPv4 or IPv6, Compression function. The PDCP layer is also used to perform encryption of C-plane data, for example, an RRC message. PDCP also encrypts U-plane data.

The radio resource control (RRC) layer located at the bottom of the third layer is defined only in the control plane and is configured to perform a configuration of a radio bearer (RB) -configuration and release of the logical channel, the transport channel, and the physical channel. At this time, the RB means a service provided by the second layer for data transmission between the UE and the E-UTRAN.

Hereinafter, RACH (Random Access Channel) will be described in detail. The RACH channel is used to transmit data of a short length upstream, and is used when there is a signaling message or user data that a UE that has not been allocated a dedicated radio resource should transmit upward. Or, the BS may be used when it instructs the UE to perform the RACH process.

The following is a description of a random access procedure provided by the LTE system. The random access procedure provided by the LTE system is divided into a contention based random access procedure and a non-contention based random access procedure. The division between the contention-based random access procedure and the contention-based random access procedure is determined according to whether the terminal directly selects a random access preamble used in the random access procedure or whether the base station selects the random access preamble.

In the non-contention-based random access procedure, the UE uses a random access preamble that the BS directly assigns to itself. Therefore, when the BS only allocates the specific random access preamble to the MS, the random access preamble is used only by the MS, and the MS does not use the random access preamble. Therefore, since a 1: 1 relationship is established between the random access preamble and the terminal using the random access preamble, it can be said that there is no collision. In this case, as soon as the base station receives the random access preamble, it can know the terminal that transmitted the random access preamble, which is efficient.

On the contrary, in the contention-based random access procedure, randomly selected and transmitted random access preambles available for the UE may be used, so that there is a possibility that a plurality of UEs always use the same random access preamble. Therefore, even if the base station receives a specific random access preamble, it can not know which terminal transmitted the random access preamble.

In general, a UE can perform a random access procedure in the following cases. 2) the UE initially accesses the target cell during the handover process; 3) when the UE is requested by an instruction from the base station; and 4) when the UE makes initial access without connection with the base station (RRC Connection) 5) When data is generated in the uplink in a situation where the time synchronization of the uplink does not match or a designated radio resource used for requesting radio resources is not allocated 5) Radio link failure or handover In the case of a recovery process in case of a handover failure.

Based on the above description, FIG. 4 shows an operation procedure of the UE and the BS in the contention-based random access procedure.

First, in a contention-based random access, a UE randomly selects one random access preamble from a set of random access preambles indicated through system information or a handover command, and transmits the random access preamble Selects a PRACH resource and transmits it to the base station. (Step 1) The preamble at this time is called RACH MSG 1.

After the UE transmits the random access preamble as described above, the UE attempts to receive a response to its random access preamble in the random access response reception window indicated by the system information or the handover command (step 2). More specifically, the random access response information is transmitted in the form of a MAC PDU, and the MAC PDU may be delivered to a physical downlink shared channel (PDSCH). In addition, a Physical Downlink Control Channel (PDCCH) is also transmitted together with the PDSCH to properly receive the information transmitted on the PDSCH. That is, the PDCCH may include information of a UE receiving the PDSCH, frequency and time information of the PDSCH, and a transmission format of the PDSCH. Here, if the UE succeeds in receiving the PDCCH coming to the UE itself, the UE properly receives a random access response transmitted on the PDSCH according to the information of the PDCCH. The random access response includes a random access preamble identifier (ID), a UL Grant (uplink radio resource), a Temporary C-RNTI (temporary cell identifier), and a Timing Advance Command (or Time Alignment Command) do. The reason why the random access preamble delimiter is necessary is that random access response information for one or more UEs can be included in one random access response. Therefore, it is possible to determine to which UE the UL Grant, Temporary C-RNTI and Timing advance command information is valid It is to inform. The random access preamble identifier corresponds to the random access preamble selected in step 1 by itself.

Herein, when the UE receives a random access response, the UE processes the information included in the random access response. That is, the UE applies a Timing advance command and stores a Temporary C-RNTI. In addition, using UL Grant, data stored in the buffer of the UE or newly generated data is transmitted to the BS (step 3). At this time, the identifier of the UE must be included in the data included in the UL Grant (hereinafter referred to as message 3). This is because, in the contention-based random access procedure, the base station can not determine which UEs perform the random access procedure, and it is necessary to identify the UE in order to resolve the collision later. Here, there are two methods of including the identifier of the terminal. In the first method, if the UE has a valid cell identifier already allocated in the corresponding cell before the random access procedure, the UE transmits its cell identifier through the UL Grant. On the other hand, if a valid cell identifier is not allocated before the random access procedure, the UE transmits its own unique identifier (e.g., S-TMSI or Random Id). In general, the unique identifier is longer than the cell identifier. In step 3, if the UE transmits data through the UL Grant, the UE starts a contention resolution timer for a conflict resolution.

After the UE transmits data including its own identifier through the UL Grant included in the random access response, the UE waits for an instruction from the BS to resolve the conflict. That is, the PDCCH is attempted to receive a specific message (step 4). There are two methods of receiving the PDCCH. As described above, when the UE's own identifier transmitted through the UL Grant is a cell identifier, it attempts to receive the PDCCH using its cell identifier. If the identifier is a unique identifier, And attempts to receive the PDCCH using the Temporary C-RNTI. Thereafter, in the former case, if the PDCCH (hereinafter referred to as message 4) is received through its cell identifier before the collision resolution timer expires, the UE determines that the random access procedure is normally performed, The access process is terminated. In the latter case, if the PDCCH is received through the temporary cell identifier before the collision resolution timer expires, data (hereinafter referred to as message 4) transmitted by the PDSCH indicated by the PDCCH is checked. If the unique identifier is included in the contents of the data, the terminal normally determines that the random access procedure has been performed and terminates the random access procedure. Here, the message or MAC PDU received in the fourth step is often referred to as RACH MSG 4.

The following describes a method in which the UE receives downlink data in the LTE system. 5 is an exemplary diagram illustrating radio resource allocation according to the prior art.

In the downward direction, the physical channels are divided into two types: Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH). The PDCCH is not directly related to the transmission of the user data, and control information necessary for operating the physical channel is transmitted. In the simplest case, the PDCCH may be used to control other physical channels. In particular, the PDCCH is used for transmission of information necessary for the UE to receive the PDSCH. At a certain point in time, information such as which data is transmitted using a specific frequency band, which terminal, what size of data is transmitted, and the like is transmitted through the PDCCH. Accordingly, each UE receives a PDCCH in a specific TTI, checks whether data to be received is to be transmitted through the PDCCH, and if it is notified that data to be received is to be transmitted, And further receives PDSCH using information such as frequency. PDSCH data is transmitted to a terminal (one or a plurality of terminals), and information on how to receive and decode PDSCH data is transmitted through a Physical Downlink Control Channel (PDCCH) As shown in FIG.

For example, in a specific subframe, radio resource information (e.g., frequency position) A and transmission format information B (e.g., transport block size, modulation and coding information) Temporary Identity) and transmitted through the PDCCH. One or more UEs in the corresponding cell monitor the PDCCH using RNTI information of its own. In the above assumption, a CRC error is generated when the UE decodes the PDCCH with an RNTI of C . Accordingly, the UE receives the data by decoding the PDSCH using the B format transmission format information and the A radio resource information. On the other hand, in the above assumption, in a terminal that does not have an RNTI of C, a CRC error occurs when the PDCCH is decoded. Therefore, the UE does not receive the PDSCH.

In this process, a Radio Network Temporary Identifier (RNTI) is transmitted in order to inform which UEs the radio resources are allocated through each PDCCH. The RNTI includes a dedicated RNTI and a common RNTI. A dedicated RNTI is allocated to one terminal and is used for transmission and reception of data corresponding to the terminal. The dedicated RNTI is allocated only to a terminal in which information is registered in the base station. On the contrary, the common RNTI is used when the UEs whose information is not registered in the base station and have not been assigned a dedicated RNTI exchange data with the base station, or when they transmit information commonly applied to a plurality of UEs, such as system information.

As mentioned above, the two axes constituting the E-UTRAN are the base station and the terminal. The radio resources in one cell are composed of uplink radio resources and downlink radio resources. The base station is responsible for allocation and control of uplink radio resources and downlink radio resources of the cell. That is, the base station determines at what instant which terminal uses which radio resource. For example, the base station may decide to assign a frequency of 100 MHz to 101 Mhz after 3.2 seconds to user 1 for 0.2 second for downlink data transmission. After making the decision, the base station notifies the corresponding terminal of the fact that the terminal receives the downlink data. Likewise, the base station determines when a certain mobile station will transmit data using a certain amount of radio resources. The base station informs the mobile station of the determination, and the mobile station transmits data using the radio resource for the predetermined time .

Unlike the conventional method, the base station manages radio resources dynamically, thereby enabling efficient use of radio resources. In the conventional technology, one terminal continuously uses one radio resource while a call is connected. This is unreasonable especially considering that many services in recent years are based on IP packets. This is because most packet services do not consistently generate packets during the connection time of the call, but there are many sections that do not transmit anything during the call. In this case, it is inefficient to continuously allocate radio resources to one UE. In order to solve this problem, the E-UTRAN system uses a method of allocating radio resources to the mobile station only in the same manner while the service data is available only when the mobile station is required.

The following is a description of a semi-persistent scheduling scheme or a semi-persistent radio resource allocation scheme. Generally, a process of transmitting data to a base station will be described as follows: 1) a terminal requests a base station to transmit a generated radio resource to a base station; 2) a base station transmits a control signal And 3) transmitting data to the base station through the radio resource allocated by the mobile station. However, in VoIP service, since small packets of a certain size are transmitted regularly regularly, an efficient radio resource allocation scheme can be applied considering these characteristics. That is, the semi-persistent radio resource allocation scheme is also an example of the radio resource allocation scheme optimized for the VoIP service. This method is a method of omitting transmission of information related to radio resource allocation. More specifically, when the VoIP service is started, the packet size and the cycle of the RTP are determined in advance, and the radio resources are permanently allocated. Accordingly, according to the setting of the radio resources, the UE can perform the process of directly transmitting data without the step of requesting the radio resources and allocating the radio resources, which are the first and second steps described above. That is, in the persistent radio resource allocation method, it is not necessary to transmit the radio resource allocation information via the PDCCH. That is, even if the UE does not receive the PDCCH every time, the UE periodically receives specific radio resources according to preset information or transmits the radio resources using specific radio resources. On the contrary, the dynamic scheduling method is a method of informing the radio resources used by the mobile station or when the mobile station transmits each time.

The base station may optionally set a dedicated radio resource request channel (D-SR channel) to the mobile station. This D-SR channel is a channel through which 1-bit information can be transmitted at predetermined time intervals.

More specifically, in an LTE system, in order to efficiently use radio resources, a base station must know how much data to transmit to each user. In the case of downlink data, this downlink data is transmitted from the access gateway to the base station. Therefore, the base station knows how much data should be transmitted on the downlink to each user. On the contrary, in the case of data in the uplink, if the terminal does not directly inform the base station about the data to be transmitted on the uplink, the base station can not know how much of the uplink radio resource each terminal requires. Therefore, in order for the base station to properly allocate the uplink radio resource to the mobile station, each mobile station must provide the base station with information necessary for scheduling the radio resources.

To this end, the MS informs the BS of data to be transmitted, and the BS transmits a Resource Allocation Message to the MS based on the information.

When the UE informs the BS of the data to be transmitted, the UE informs the BS of the amount of data accumulated in its buffer. This is called a Buffer Status Report (BSR).

The buffer status information is generated in the form of a MAC Control Element, and is included in the MAC PDU, and is transmitted from the UE to the BS. That is, an uplink radio resource is also required to transmit the buffer status information (BSR: Buffer Status Report). This means that uplink radio resource allocation request information for transmitting buffer status information should be sent. When the buffer status information is generated, if there is an allocated uplink radio resource, the UE immediately transmits buffer status information using the uplink radio resource. The process by which the UE sends buffer status information to the BS is called a buffer status information process (BSR procedure). The BSR process includes: 1) when there is no data in all buffers, when data is newly arrived in a buffer, 2) when data arrives in an empty buffer, and the priority of a logical channel associated with the buffer is When the priority is higher than the logical channel associated with the buffer that holds the data, and 3) When the cell is changed, etc. However, when the uplink radio resource is allocated after the BSR process is triggered, all the data in the buffer can be transmitted through the radio resource. However, if the radio resource is insufficient to further include the BSR, Canceled BSR process.

However, when the buffer status information is generated, if there is no allocated uplink radio resource, the UE performs a resource allocation request (SR process: Scheduling Request Procedure).

There are two SR processes. One is a dedicated scheduling request (D-SR) channel set in a PUCCH resource, and the other is a RACH process. That is, when the SR process is triggered, the UE sends a radio resource allocation request using the D-SR channel if the D-SR channel is allocated, and starts the RACH process if the D-SR channel is not allocated. When the D-SR channel is used, the resource request allocation signal is transmitted in the upward direction through the D-SR channel.

The SR process continues until the UE receives the UL-SCH resource.

Generally, for a radio resource allocated through a persistent radio resource allocation scheme, a terminal can send any logical channel or any control information using the radio resource. The radio resources allocated through the persistent radio resource allocation scheme do not exist every sub-frame. Considering that normal voice data is generated at intervals of 20 ms, the radio resources are also allocated at approximately 20 ms intervals. When a call is set, the base station sets up various kinds of RBs with the terminal. That is, not only RBs used for transmission of voice service data, but also RBs for sending and receiving control signaling, as well as RBs for browsing the Internet can be set in the terminal.

A feature of the service set in the RB and the like is that data for the service is generated irregularly. Since the voice service data is constantly generated at intervals of 20 ms, it is possible to adjust the timing of the data of the service and the timing of the radio resources allocated through the continuous radio resource allocation method to be consistent with each other. However, the data generation time in the other RBs does not substantially coincide with the timing of the radio resources allocated through the persistent radio resource allocation scheme. Thus, in this case, buffer status information is generated, which triggers the SR process. However, the SR process takes a lot of time. When radio resources are allocated through a continuous radio resource allocation scheme before radio resources are allocated through the SR process, radio resources are wasted.

Accordingly, the present invention intends to transmit a radio resource allocation request more effectively in the process of exchanging data between a base station and a mobile station.

In order to achieve the above object, there is provided a method for transmitting a wireless resource allocation request to a network in a wireless communication system, comprising: determining whether at least one scheduling information is triggered; Confirming that there are resources periodically configured when it is determined that the at least one scheduling information has been triggered; And if the periodically configured resources do not exist, performing a scheduling request (SR) process.

Advantageously, the at least one scheduling information is a BSR (Buffer Status Report).

Preferably, the periodically configured resources are PRs (Persistent Resources).

Preferably, the scheduling request process is performed by an uplink control channel transmission or a random access channel (RACH) process.

Preferably, if the uplink control channel is configured to transmit the scheduling request, the scheduling request is transmitted on the uplink control channel, and if the uplink control channel is not configured to transmit the scheduling request, Random Access Channel) process is started.

Advantageously, the uplink control channel is a Physical Uplink Control Channel (PUCCH).

According to another aspect of the present invention, there is provided a method of transmitting a wireless resource allocation request to a network in a wireless communication system, the method comprising: determining whether at least one scheduling information is triggered; Confirming whether there are resources allocated within a specific time period when it is determined that the at least one scheduling information has been triggered; And performing a scheduling request (SR) process if the allocated resources do not exist within the predetermined time period.

Advantageously, the at least one scheduling information is a BSR (Buffer Status Report).

Advantageously, the allocated resources are periodically configured resources.

Preferably, the scheduling request process is performed by an uplink control channel transmission or a random access channel (RACH) process.

Preferably, if the uplink control channel is configured to transmit the scheduling request, the scheduling request is transmitted on the uplink control channel, and if the uplink control channel is not configured to transmit the scheduling request, Random Access Channel) process is started.

Advantageously, the uplink control channel is a Physical Uplink Control Channel (PUCCH).

Preferably, the specific time interval is configured by an RRC (Radio Resource Control) layer.

Preferably, the specific time interval is set according to a round trip time of data transmission.

The present invention proposes a method for preventing the start of a scheduling request (SR) or a buffer status report (BSR) when a mobile station has already allocated radio resources from a base station, .

The present invention is applied to 3GPP communication technology, in particular Universal Mobile Telecommunications System (UMTS) system, communication device and communication method. However, the present invention is not limited thereto and may be applied to all wired / wireless communication to which the technical idea of the present invention can be applied.

A basic concept of the present invention is a method for transmitting a radio resource allocation request to a network on a wireless communication system, comprising: determining whether at least one scheduling information has been triggered; Confirming that there are resources periodically configured when it is determined that the at least one scheduling information has been triggered; And if the periodically configured resources do not exist, performing a scheduling request (SR) process. The method of transmitting a wireless resource allocation request to a network in a wireless communication system, The present invention proposes a wireless mobile communication terminal capable of performing wireless communication.

Also, there is provided a method of transmitting a wireless resource allocation request to a network on a wireless communication system, comprising: determining whether at least one scheduling information is triggered; Confirming whether there are resources allocated within a specific time period when it is determined that the at least one scheduling information has been triggered; And performing a scheduling request (SR) process if the allocated resources do not exist within the predetermined time period. The method of claim 1, The present invention provides a wireless mobile communication terminal.

Hereinafter, configurations and operations of embodiments according to the present invention will be described with reference to the accompanying drawings.

As described above, the present invention prevents an unnecessary buffer status information report or a scheduling request (SR) process from being performed in a terminal to which a radio resource is allocated through a persistent radio resource allocation scheme, thereby enabling efficient use of radio resources I would like to suggest a method.

To this end, the present invention proposes that the SR does not automatically or randomly start the scheduling request (SR) process even if the BSR (Buffer Status Report) is triggered when the allocated radio resource is set through the persistent radio resource allocation scheme. In this case, the triggered BSR may be canceled, or may be transmitted through the radio resource when the uplink radio resource is allocated through the Physical Downlink Control Channel (PDCCH) The uplink radio resource allocated through the uplink radio resource allocation scheme and the uplink radio resource allocated through the PDCCH and the uplink radio resource allocated in the uplink radio resource allocated in the uplink radio resource allocation scheme, It is possible.

In addition, the present invention proposes that the UE does not trigger the BSR process when the allocated radio resource is set through the persistent radio resource allocation scheme. That is, generally, when the BSR process is triggered, the scheduling request (SR) process is also triggered, so that not triggering the BSR process as described above may be implemented such that the BSR process is triggered but the SR process is not triggered.

In other words, when data arrives on a certain logical channel, the UE first checks whether there is an uplink radio resource allocated to it through the persistent radio resource allocation scheme, and if the condition of the BSR trigger is satisfied And if so, can trigger the BSR. When there is no radio resource allocated in the upward direction and the BSR process is triggered, the UE checks whether there is an uplink radio resource allocated to the UE in the uplink radio resource allocation scheme. If the uplink resource is not available The SR process can be started. Here, if the persistent radio resource allocation scheme is used, even if data arrives in an empty buffer, the BSR is not triggered. Or, even if the BSR is triggered, the SR process is not triggered.

Also, when the persistent radio resource allocation scheme is used, the base station further informs the UE of a BSR related logical channel list. In this case, when data arrives in an empty buffer of the UE, the UE checks whether the data is included in the BSR related logical channel list. If not, the BS triggers the BSR, and if necessary, have. Alternatively, when the persistent radio resource allocation scheme is used, the base station further informs the terminal of a BSR related logical channel list. In this case, when data arrives in an empty buffer of the UE, the UE checks whether the data is included in the BSR related logical channel list, and if so, BSR is triggered and if necessary, have.

Also, when the persistent radio resource allocation scheme is used, the base station further informs the UE of a BSR related logical channel list. Here, when data arrives in an empty buffer of the UE, the UE checks whether the data is included in the BSR related logical channel list, and if not, it may not trigger the BSR. Alternatively, when the persistent radio resource allocation scheme is used, the base station further informs the terminal of a BSR related logical channel list. Here, if data arrives in an empty buffer of the UE, the UE checks whether the data is included in the BSR related logical channel list, and if not, it may not trigger the BSR.

In the above procedure, if data arrives in an empty buffer, the UE may perform the above operations when the logical channel corresponding to the data has a higher priority than another logical channel having data in the buffer. Also, when the persistent radio resource allocation scheme is used, the base station further informs the UE of a BSR related logical channel list. Herein, when data arrives in an empty buffer of the UE, the UE checks whether the data has a higher priority than the logical channels included in the BSR related logical channel list, and if the priority is high, It is possible.

In the above processes, when the BSR is triggered, a scheduling request (SR) may be additionally triggered if there is no allocated radio resource. Alternatively, when the persistent radio resource allocation scheme is used, the UE may trigger the BSR when the amount of data stored in a buffer of a certain logical channel is greater than a certain level. Alternatively, if the amount of data stored in the buffer of a certain logical channel is greater than the amount of data that can be transmitted through the allocated radio resource through the persistent radio resource allocation scheme, the UE may trigger the BSR.

As another method of the present invention, a timer or an operation method considering time can be considered. That is, when the BSR is triggered at a certain time point and the persistent radio resource allocation method is set, a time difference between the time of the triggered BSR and the next time point of the allocated radio resource is obtained by the persistent radio resource allocation method, If the difference is below a certain range, the SR process is not started, and if the time difference is above a certain range, the SR process is started. In addition, when data is received in a vacant buffer for a certain logical channel at a certain point in time, and a persistent radio resource allocation method is set, the next time point of arrival of the data and the next time point of the allocated radio resource If the time difference is within a certain range, the BSR is not triggered, and if the time difference is within a certain range, the BSR process is triggered.

FIG. 6 is a diagram illustrating a method of operating a buffer status report (BSR) using pre-allocated radio resources according to the present invention.

In FIG. 6, the BSR may also be interpreted as a scheduling request (SR). As shown in FIG. 6, it is assumed that a certain time before the radio resource allocated by the persistent radio resource allocation method is arbitrarily referred to as a B section, and other time intervals are referred to as A section. If the data arrives at the A section, the SR or BSR procedure starts as in the above-mentioned suggestions of the present invention. If the data arrives at the B section, the SR or BSR The process does not start.

In the present invention, only a case where radio resources are allocated as a continuous radio resource allocation method has been described. However, the present invention can also be used or applied to a general dynamic radio resource allocation method. For example, there is a time difference between when a radio resource allocation message on the PDCCH is transmitted and when the radio resource indicated by the radio resource allocation message is used by the mobile station in the actual dynamic radio resource allocation method. Therefore, it is wasteful to perform the SR or BSR when data arrives during the time difference interval. Therefore, when radio resources for initial transmission are allocated in the dynamic radio resource allocation method, the present invention does not trigger BSR or SR, or ignores BSR or SR until the UE can actually use the radio resource I suggest. In addition, when data newly arrives in a buffer of a certain logical channel, especially when the priority of the logical channel is higher than that of any other logical channels that previously had data, the newly allocated UL-SCH It is suggested that the BSR process be canceled or not started if all new data arriving on the logical channel can be transmitted through the radio resource.

Hereinafter, a terminal according to the present invention will be described.

A terminal according to the present invention includes all types of terminals capable of using a service for exchanging data with each other over wireless. That is, the terminal according to the present invention may be a mobile communication terminal (e.g., a UE, a mobile phone, a cellular phone, a DMB phone, a DVB-H phone, a PDA phone, a PTT phone, And laptops, laptop computers, digital TVs, GPS navigation, portable gaming devices, MP3 and other consumer electronics, and the like.

The terminal according to the present invention may include a basic hardware configuration (a transmission / reception unit, a processing unit or a control unit, a storage unit, and the like) required to perform functions and operations for receiving system information as exemplified by the present invention.

The method according to the present invention described so far can be implemented in software, hardware, or a combination thereof. For example, the method according to the present invention can be stored in a storage medium (e.g., a mobile terminal or a base station's internal memory, flash memory, hard disk, etc.) Lt; / RTI > may be implemented in code or instructions within a software program that may be executed by a microprocessor (e.g., an internal microprocessor).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present invention . Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1 is a network structure of an E-UMTS which is a conventional mobile communication system to which the present invention is applied.

2 is a control plane structure of a wireless interface protocol between a terminal based on the 3GPP radio access network standard and a UTRAN (UMTS Terrestrial Radio Access Network).

3 is a user plane structure of a wireless interface protocol between a terminal based on the 3GPP radio access network standard and a UTRAN (UMTS Terrestrial Radio Access Network).

4 is an exemplary diagram illustrating a contention-based random access procedure.

5 is an exemplary diagram illustrating radio resource allocation according to the prior art.

FIG. 6 is a diagram illustrating a method of operating a buffer status report (BSR) using pre-allocated radio resources according to the present invention.

Claims (30)

A method for transmitting a wireless allocation resource request to a network on a wireless communication system, Determining whether a buffer status report (BSR) has been triggered; If the buffer status information has been triggered, checking if there are configured resources of the network available to the device; Triggering a Scheduling Request (SR) to the network if it is determined that the configured resources of the network available to the device are not present in the checking step; And Generating a Buffer Status Report Medium Access Control Control Element (BSR MAC CE) and operating a timer associated with the BSR if it is determined that the configured resources of the network available to the device exist in the checking step The method comprising: transmitting a request for a wireless allocation resource to a network on a wireless communication system. delete delete 2. The method of claim 1, wherein the scheduling request is performed by an uplink control channel or a random access channel (RACH) process. 5. The method of claim 4, wherein if the uplink control channel is configured to transmit the scheduling request, the scheduling request is transmitted on the uplink control channel, and if the uplink control channel is not configured to transmit the scheduling request, Wherein a random access channel (RACH) process is initiated. 6. The method of claim 5, wherein the uplink control channel is a Physical Uplink Control Channel (PUCCH). delete delete delete delete delete delete delete delete 2. The method of claim 1, wherein the triggered BSR is different from the triggered SR. 2. The method of claim 1, further comprising transmitting the BSR upon receiving a response to triggering of the SR. 2. The method of claim 1, further comprising transmitting the BSR in accordance with the BSR MAC CE. delete 2. The method of claim 1, wherein the SR comprises the configured resource request. 2. The method of claim 1, wherein the configured resource is a Persistent Resource (PR) of the network assigned to the device. An apparatus configured to transmit a wireless allocation resource request to a network on a wireless communication system, A processor determines if a Buffer Status Report (BSR) has been triggered and, if the buffer status information has been triggered, verifies if there are configured resources of the network available to the device, If it is determined that the configured resources of the network available to the device are not present, triggering a Scheduling Request (SR) to the network, and if it is determined that the configured resources (BSR MAC CE), and to operate a timer associated with the BSR if it is determined that there is a Medium Access Control Element Device. 22. The apparatus of claim 21, wherein the scheduling request is performed by an uplink control channel or a random access channel (RACH) process. The method of claim 22, wherein if the uplink control channel is configured to transmit the scheduling request, the scheduling request is transmitted on the uplink control channel, and if the uplink control channel is not configured to transmit the scheduling request, Wherein the RACH (Random Access Channel) process is started. 24. The apparatus of claim 23, wherein the uplink control channel is a Physical Uplink Control Channel (PUCCH). 22. The apparatus of claim 21, wherein the triggered BSR is different from the triggered SR. 22. The apparatus of claim 21, wherein the processor transmits the BSR upon receiving a response to the triggering of the SR. 22. The apparatus of claim 21, wherein the processor transmits the BSR in accordance with the BSR MAC CE. delete 22. The apparatus of claim 21, wherein the SR comprises the configured resource request. 22. The apparatus of claim 21, wherein the configured resource is a Persistent Resource (PR) of the network assigned to the device.

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