KR20090127793A - Method of requesting bandwidth request for multi connection in wireless access system - Google Patents

Abstract

PURPOSE: A method of requesting bandwidth request for a multi connection is provided to perform data communication effectively by requesting a bandwidth required for a base station. CONSTITUTION: An MS(Mobile Station) transmits a BR(Bandwidth Request) CDMA code in a BS(Base Station)(S402). The base station assigns resources for transmission of a BR(Bandwidth Request)Header through a CDMA(Code Division Multiple Access) assignment information element to a terminal(S403). The terminal transmits the BR header through the allocated resource area(S404). The base station assigns proper resources through the transmission of the UL(Uplink)-MAP message to the terminal(S405). The terminal transmits data through the allocated upward link resource area to the base station(S406).

Description

Method of requesting bandwidth request for multi connection in wireless access system}

The present invention relates to a bandwidth request in a wireless access system. The present invention also relates to a method for requesting bandwidth to a base station when a terminal has a transport packet for multiple connections.

Hereinafter, a general frame structure used in a wireless access system will be described.

1 is a diagram illustrating a frame structure used in a broadband wireless access system (eg, IEEE 802.16).

Referring to FIG. 1, the horizontal axis of the frame represents an Orthogonal Frequency Division Multiple Access (OFDMA) symbol as a time unit, and the vertical axis of the frame represents a logical number of a subchannel as a frequency unit. In FIG. 1, one frame is divided into a data sequence channel for a predetermined time period by physical characteristics. That is, one frame includes one downlink subframe and one uplink subframe. The downlink subframe and the uplink subframe are classified into TTG (Transmit Transition Gap), and are classified into Receive Transition Gap (RTG) between frames.

In this case, the downlink subframe includes one preamble, a frame control header (FCH), a downlink map (DL-MAP), an uplink map (UL-MAP), and one or more downlink data bursts. It may include. In addition, the uplink subframe may include an uplink control channel such as an HARQ ACK channel, a fast feedback channel, and a ranging subchannel, and one or more uplink data bursts.

In FIG. 1, preamble is specific sequence data located in the first symbol of every frame, which is used by the terminal to synchronize with the base station or to estimate a channel. The FCH is used to provide channel allocation information and channel code information related to the DL-MAP. DL-MAP / UL-MAP is a Media Access Control (MAC) message used to inform UE of channel resource allocation in downlink and uplink. In addition, a data burst represents a unit of data for transmission from the base station to the terminal or from the terminal to the base station.

The downlink channel descriptor (DCD) that can be used in FIG. 1 indicates a MAC message for indicating physical characteristics in the downlink channel, and the uplink channel descriptor (UCD) indicates the physical of the uplink channel. Represents a MAC message for reporting characteristics.

In the case of downlink, referring to FIG. 1, the terminal detects a preamble transmitted from the base station and synchronizes with the base station. Thereafter, the downlink map may be decoded using the information obtained from the FCH. The base station may transmit scheduling information for downlink or uplink resource allocation to the terminal every frame (for example, 5 ms) using a downlink or uplink map (DL-MAP / UL-MAP) message.

Since the DL-MAP / UL-MAP message described with reference to FIG. 1 is transmitted at a Modulation Coding Scheme (MCS) level that can be received by all UEs, unnecessary MAP message overhead may occur. For example, terminals near the base station use a high MCS level (e.g., QPSK 1/2) to encode and decode the message because of good channel conditions. However, without considering this situation, the base station will encode and transmit a map message at a low MCS level (for example, QPSK 1/12) for the terminal at the cell edge. Accordingly, since each terminal must always receive a message encoded at the same MCS level regardless of channel conditions, unnecessary map message overhead may occur.

2 is a diagram illustrating an example of a general MAC header used in the IEEE 802.16 system.

Referring to FIG. 2, the MAC header includes a header type (HT) field, an encryption control (EC) field, a type field, an extended subheader field (ESF), and a CRC indication ( It may include a CI: CRC Indication, an Encryption Key Sequence field, a LEN (Length) field, a Linkage Identifier (CID), and a Header Check Sequence (HCS).

Table 1 below shows fields included in a general MAC header.

Referring to Table 1, the header type (HT) field indicates a header type, and indicates whether the corresponding PDU is a general MAC header including a payload or a signaling header for controlling a bandwidth request.

The encryption control (EC) field indicates whether the payload is encrypted. The Type field indicates whether a subheader exists after the header and the type of the subheader. The extended subheader field (ESF) indicates the presence or absence of a header of an extended subheader. The CI field indicates whether the CRC is located after the payload.

The encryption key sequence (EKS) indicates an encryption key sequence number used for encryption when the payload is encrypted. The LEN (Length) field indicates the length of the MAC PDU:

A connection ID (CID: Connetion ID) indicates a connection to which a MAC PDU is delivered as a connection identifier. The CID is used as a MAC layer identifier for data and message transfer between the base station and the terminal, and the CID performs a function of identifying a specific terminal or identifying a specific service between the base station and the terminal. The HCS field is a header check sequence and can be used to detect errors in the header.

Table 2 below shows the definition of the type field.

For each bit, the type field includes a Fast Feedback Allocation Subheader (FFSH), a Grant Management Subheader (GMSH), a Packing Subheader (PSH), and a Partition Subheader (FSH: Frangment). Subheader), PSH or FSH may be extended or HARQ feedback payload is allocated.

3 is a diagram illustrating an example of a bandwidth request MAC header used in an IEEE 802.16 system.

Referring to FIG. 3, the bandwidth request MAC header includes a header type (HT) field, an encryption control (EC) field, a type field, a bandwidth request field (BR), and a connection identifier for which bandwidth is requested. (CID) and header check sequence (HCS). In FIG. 3, numbers included in parentheses indicate the size of each field in bits.

Table 3 below shows an example of a type field for a MAC signaling header type.

Referring to Table 3, the type field indicates the size of 3 bits and indicates the type of MAC header for each bit.

4 is a diagram illustrating a method in which a terminal requests bandwidth from a base station on a contention basis.

Referring to FIG. 4, a base station (BS) may transmit an uplink map (UL-MAP) message including a bandwidth request (BR) area to a mobile station (MS) (S401). .

When the uplink packet to be transmitted to the base station BS is generated, the terminal MS may transmit a bandwidth request CDMA code to the bandwidth request region BR region (S402).

When the base station receives the BR CDMA code from the terminal, the base station may allocate a resource for transmitting the bandwidth request header (BR Header) using the CDMA allocation information element (CDMA_allocation_IE) (S403).

The terminal may transmit a BR header through a resource region allocated from the base station. In this case, the BR header may use the BR header described with reference to FIG. 3 (S404).

The base station receiving the BR header may allocate an appropriate resource to the terminal by transmitting an UL-MAP message including the uplink allocation region to the terminal (S405).

The terminal may transmit data to the base station through the allocated uplink resource region (S406).

5 is a diagram illustrating an example in which a terminal uses a general MAC subheader (GMSH).

Referring to FIG. 5, the terminal MS transmits a BR header to the base station BS to request a bandwidth (S501).

The base station may transmit an UL map message (UL-MAP wiht UL allocation) including an uplink allocation region to the terminal in response to the bandwidth request (S502).

The size of the packet to be transmitted by the terminal may be larger than the allocated uplink allocation area (S503).

In this case, the terminal may transmit a Generic MAC Subheader (GMSH) including the size needed for the same connection to the base station while transmitting data to the base station (S504).

The base station receiving the GMSH may additionally allocate bandwidth to the terminal using information included in the GMSH.

6 is a diagram illustrating an example in which a terminal transmits a packet to a base station for multiple connections.

When the multi-connection is formed, the terminal may have a data packet to be transmitted in the uplink. In this case, the terminal may request a bandwidth from the base station and transmit a packet to the base station using the allocated resources.

Referring to FIG. 6, the terminal may form multiple connections. The terminal and the base station generate connection identifiers (CID A, CID B, CID C) for each connection. The terminal may have an uplink packet to be transmitted for each connection (S601).

The base station may allocate a resource for the bandwidth request to the terminal (S602).

The terminal may perform header transmission for requesting bandwidth to the base station for each connection. That is, the terminal may transmit a bandwidth request CDMA code (BR CDMA code) for each connection identifier to the ranging region (S603).

The base station may allocate resources for the terminal to transmit the header by using each of the CDMA allocation IE (CDMA allocation IE) for the requested connection (S604).

The terminal transmits BR headers for each CID to the allocated area (S605).

The base station receiving the BR header allocates resources for each CID (S606).

The terminal may transmit uplink data to an area allocated to the base station (S607).

In FIG. 6, when the UE has multiple connections, the UE should transmit BR CDMA codes for each connection (see step S603). This can increase the possibility of collision for the CDMA code in the connection-based bandwidth request method, and can increase the power consumption of the UE because one UE needs to transmit three BR CDMA codes for the bandwidth request. .

In addition, the base station may allocate areas for transmitting the BR header with respect to the BR CDMA code in the same frame (see step S604). At this time, if resources are allocated to different subchannels in the same frame, the instantaneous power consumption of the terminal increases. In addition, the instantaneous power consumption of the terminal, particularly at the cell edge, is very high, and in the worst case, the instantaneous power may be insufficient. In this case, it may become more serious when data is transmitted in the same frame (see steps S606 to S607).

In addition, when the base station allocates a bandwidth header (BR header) transmission area to the terminal with a high transmission rate for each of the multiple connections, the base station must allocate a resource area for each connection, it may be a waste of downlink resources.

 The present invention has been made to solve the problems of the general technology as described above, an object of the present invention is to provide a data communication method efficiently.

Another object of the present invention is to provide an efficient method for requesting a bandwidth required by a base station when a terminal has a transport packet for multiple connections.

In order to solve the above technical problem, the present invention discloses a method for requesting bandwidth to a base station when the terminal has a transport packet for multiple connections.

In one aspect of the present invention, there is provided a method for requesting a bandwidth for multiple connectivity in a wireless access system, the method comprising: transmitting a bandwidth request code for multiple connectivity to a base station; receiving a resource region for the multiple connectivity from the base station; Requesting bandwidth for multiple connections. In this case, the bandwidth request code for the multi-connection may use a ranging code allocated for the multi-bandwidth request in the ranging code set.

In one aspect of the present invention, the step of requesting bandwidth may be performed by transmitting a multi-bandwidth request header to the base station. In this case, the multi-bandwidth request header may include one or more of a bandwidth request header, a bandwidth request list field, and a header check sequence. In addition, the bandwidth request header may include one or more of a type field, a terminal identifier, a scheduling service type field, and a bandwidth request size field. In addition, the bandwidth request list field may include one or more of a connection identifier, a bandwidth size field, and a scheduling service type field.

In one aspect of the present invention, the multi-bandwidth request header may include one or more identifiers assigned for the multi-connection.

In one aspect of the present invention, the requesting the bandwidth may be performed by transmitting a multiple bandwidth header for each of the one or more identifiers allocated for the multiple bandwidth request.

In one aspect of the present invention, the step of requesting bandwidth may be performed by sending a multi-bandwidth request message to the base station. In this case, the multi-bandwidth request message may include a bandwidth request list number field, a connection identifier, and a bandwidth request size field. Alternatively, the multi-bandwidth request message may include one or more identifiers assigned for the multi-connection.

In one aspect of the present invention, the bandwidth request code for the multiple connection may use one or more codes among ranging code sets for bandwidth request.

In another aspect of the present invention, there is provided a bandwidth request method for multiple connectivity in a wireless access system, the method comprising: receiving a bandwidth request code for the multiple connectivity from a terminal and allocating a resource region for the multiple connectivity to the terminal; And receiving the request for bandwidth. In this case, the bandwidth request code for the multi-connection may use a ranging code allocated for the multi-bandwidth request in the ranging code set.

According to embodiments of the present invention has the following effects.

First, data communication can be efficiently performed by using the embodiments of the present invention.

Second, when the terminal has a transport packet for multiple connections, it can efficiently request the required bandwidth to the base station.

The present invention relates to a wireless access system. In addition, the present invention discloses a method for requesting bandwidth to a base station when a terminal has a transport packet for multiple connections.

The following embodiments combine the components and features of the present invention in a predetermined form. Each component or feature may be considered to be optional unless otherwise stated. Each component or feature may be embodied in a form that is not combined with other components or features. In addition, some components and / or features may be combined to form an embodiment of the present invention. The order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment.

In the description of the drawings, procedures or steps, which may obscure the gist of the present invention, are not described, and procedures or steps that can be understood by those skilled in the art are not described.

In the present specification, embodiments of the present invention have been described based on data transmission / reception relations between a base station and a terminal. Here, the base station has a meaning as a terminal node of a network that directly communicates with the terminal. The specific operation described as performed by the base station in this document may be performed by an upper node of the base station in some cases.

That is, various operations performed for communication with a terminal in a network consisting of a plurality of network nodes including a base station may be performed by a network node other than the base station or the base station. In this case, the 'base station' may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), and an access point. In addition, the term “mobile station (MS)” may be replaced with terms such as a user equipment (UE), a subscriber station (SS), a mobile subscriber station (MSS), or a mobile terminal.

In addition, the transmitting end refers to a node transmitting data or voice service, and the receiving end refers to a node receiving data or voice service. Therefore, in uplink, a terminal may be a transmitting end and a base station may be a receiving end. Similarly, in downlink, a terminal may be a receiving end and a base station may be a transmitting end.

On the other hand, the mobile terminal of the present invention PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, GSM (Global System for Mobile) phone, WCDMA (Wideband CDMA) phone, MBS (Mobile Broadband System) phone And the like can be used.

Embodiments of the invention may be implemented through various means. For example, embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.

In the case of a hardware implementation, the method according to embodiments 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). Field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of an implementation by firmware or software, the method according to the embodiments of the present invention may be implemented in the form of a module, a procedure, or a function 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.

Embodiments of the present invention may be supported by standard documents disclosed in at least one of the wireless access systems IEEE 802 system, 3GPP system, 3GPP LTE system and 3GPP2 system. That is, steps or parts which are not described to clearly reveal the technical spirit of the present invention among the embodiments of the present invention may be supported by the above documents. In addition, all terms disclosed in the present document can be described by the above standard document. In particular, embodiments of the present invention may be supported by P802.16e-2005 or P802.16 Rev2 / D4 (April 2008), which is a standard document of the IEEE 802.16 system.

Specific terms used in the following description are provided to help the understanding of the present invention, and the use of the specific terms may be modified in other forms without departing from the technical spirit of the present invention.

In embodiments of the present invention, a bandwidth request CDMA code set for multiple connections may be newly defined in order to solve the above-described problem with multiple connections.

For example, the terminal and the base station may use a portion of the existing BR CDMA codeset as a multiple BR CDMA codeset. When the terminal requests bandwidth for multiple connections, the terminal may select a specific code from a multiple BR CDMA code set and transmit the specific code to the base station. When the base station receives the multiple BR CDMA codes, the base station may allocate sufficient resources for the terminal to request bandwidth for the multiple connections.

When the terminal receives a resource region for transmitting the multiple BR CDMA codes, the terminal may transmit a bandwidth request MAC header (or MAC message) for the multiple connections to the base station using the allocated resource region. In this case, a signal transmitted from the terminal to the base station may generally be a BR header. In addition, the terminal may alternatively use a MAC message for bandwidth request for multiple connections.

7 illustrates an example of a CDMA ranging code set used for bandwidth request for multiple accesses according to an embodiment of the present invention.

In FIG. 7, the CDMA ranging code set includes A initial ranging codeset 700, B periodic ranging codeset 720, C BW-REQ ranging codeset 740, and D handover ranging. The code set 760 may be configured.

In this case, the C BW-REQ ranging codesets 740 may be composed of E normal RW-REQ codes (normal BR codes) 742 and F multiple BW-REQ codes (744). Can be. If the terminal needs to request bandwidth for multiple connections, the terminal may select one code from among multiple BW-REQ codes and transmit it to the base station.

The base station that receives the codes for the multiple BW-REQ codes set may allocate a resource region capable of requesting bandwidth for multiple connections from the terminal in response thereto. The terminal allocated the resource region may request bandwidth for multiple access using the allocated resource region.

8 shows an example of multiple BW-REQ headers as another embodiment of the present invention.

In FIG. 8, a multiple BR header may include a BR header, a BR list field, and an HCS field. The BR header may include a header type field and an MS ID for identifying the terminal.

In this case, the type field indicates that the BR header is a BR header including information on multiple connections. The MS ID is an ID for identifying the terminal and may have a size of about 11 bits. The BR list indicates multiple connection information and may include CID and BR size fields. In this case, the CID may have a size of about 5 bits as an ID for the service connection.

The BR size field indicates the size of the bandwidth requested by the terminal for the service connection. The BR list is a list of structures consisting of a combination of three pairs of SST and BR size fields and may represent multiple connection information.

9 shows another example of a multiple BW-REQ header according to another embodiment of the present invention.

In FIG. 9, a multiple BR header may include a BR header, a BR list field, and an HCS field. The BR header may include a terminal identifier (MS ID) of about 11 to 14 bits in size to identify the terminal. The BR list may include a Scheduling Service Type (STT) field and a BR size field.

The STT field may have a size of about 2 bits. Types of SST include UGS (ertPS), rtPS, ntPS, and BE, and the base station may perform scheduling based on an approximate quality of service (QoS) for the SST in multiple BR headers transmitted by the terminal. ertPS is treated the same as UGS.

The BR size field indicates the size of the bandwidth requested by the terminal for the service connection. The BR list is a list of structures consisting of a combination of three pairs of SST and BR size fields and may indicate multiple connection information.

10 shows another example of a multiple BW-REQ header as another embodiment of the present invention.

In FIG. 10, a multiple BR header may include a BR header, a BR list field, and an HCS field. The BR header may include a terminal identifier (MS ID) and a scheduling service type (STT) field for identifying the terminal. The BR list may include a BR size field.

The STT field may have a size of about 2 bits. Types of SST include UGS (ertPS), rtPS, ntPS, and BE, and the base station may perform scheduling based on an approximate quality of service (QoS) for the SST in multiple BR headers transmitted by the terminal. ertPS is treated the same as UGS.

The BR size field indicates the size of the bandwidth requested by the terminal for the service connection. The BR size field indicates the bandwidth size requested by the UE for the service connection. The BR list may consist of three or more BR size fields, and the values for the BR size field are included in the BR header, except for UGS, rtPS, nrtPS, BE can be set in order.

FIG. 11 is a diagram illustrating an example of requesting bandwidth for multiple connections according to another embodiment of the present invention. FIG.

Referring to FIG. 11, the terminal may form multiple connections (CID A, CID B, and CID C), and may have a packet to transmit for the multiple connections (S1101).

The base station may transmit a UL MAP message including a bandwidth request region to the terminal (S1102).

The terminal may arbitrarily select a bandwidth request CDMA code for multiple connectivity into a ranging region for bandwidth request allocated by the base station and transmit it to the base station (S1103).

The base station receiving the BR CDMA code for multiple access may determine that the terminal transmitting the multiple BR CDMA code has requested multiple connections. Accordingly, the base station may transmit a CDMA allocation information element (CDMA_allocation_IE) for multiple access to the terminal in order to allocate a resource region for multiple connections (S1104).

The terminal may transmit a bandwidth request (BW-REQ) message for multiple connectivity to the resource region allocated from the base station (S1105).

Table 5 below shows an example of a BW-REQ message that the terminal transmits to the base station to request bandwidth for multiple connections.

Syntax Size Notes BW-REQ message format () { - - Management message type = xx 8bits - Num_BR_list 3 bits - For (i = 0; i <= Num_BR_list; i ++) { CID  5 bits Service connection ID BR size 11 bits Size of BW-REQ (Bytes) } Padding variable }

Referring to Table 4, the bandwidth request message includes a management message type parameter, a bandwidth request list number (Num_BR_list) parameter, a CID indicating a service connection identifier, and a bandwidth request size field indicating a size of the bandwidth request message (BR size). ) May be included.

Upon receiving the bandwidth request header for the multiple connectivity, the base station may allocate bandwidth (for example, uplink resource allocation for CID A, CID B, and CID C) requested by the terminal to the terminal (S1106). ).

 The UE may transmit data for CID A, CID B and CID C to the allocated uplink resource region to the base station (S1107).

12 illustrates another example of requesting bandwidth for multiple connections according to another embodiment of the present invention.

In FIG. 12, steps S1201 to S1204 are similar to steps S1101 to S1104 of FIG. 11. Accordingly, descriptions of the steps S1201 to S1204 may be made with reference to FIG. 11.

However, there is a difference from FIG. 11 in the method of requesting the bandwidth allocation for the multi-connection to the base station. Referring to FIG. 12, after the terminal transmits multiple BR CDMA codes for multiple connections to the base station, the terminal may transmit a bandwidth request header to an area allocated from the base station.

For example, the terminal may transmit a BR header for each of the multiple connections to the resource region for the multiple connections allocated from the base station. That is, the terminal may transmit each BR header for CID A, CID B, and CID C to the base station (S1205).

FIG. 13 illustrates another example of requesting bandwidth for multiple connections according to another embodiment of the present invention.

In FIG. 13, steps S1301 to S1304 are similar to steps S1101 to S1104 of FIG. 11. Accordingly, descriptions of the steps S1301 to S1304 may be made with reference to FIG. 11.

However, there is a difference from FIG. 11 in the method for requesting the bandwidth allocation for the multiple connectivity from the base station. Referring to FIG. 13, after the terminal transmits multiple BR CDMA codes for multiple connections to the base station, the terminal may transmit a bandwidth request header to an area allocated from the base station.

For example, the terminal may transmit multiple BR headers to resource regions for multiple connections allocated from the base station. That is, the terminal may transmit one multiple BR header for CID A, CID B and CID C to the base station (S1305).

14 illustrates another example of requesting bandwidth for multiple connections according to another embodiment of the present invention.

In FIG. 14, steps S1401 to S1404 are similar to steps S1101 to S1104 of FIG. 11. Therefore, the description of the steps S1401 to S1404 may refer to FIG. 11.

However, there is a difference from FIG. 11 in the method of requesting the bandwidth allocation for the multi-connection to the base station. Referring to FIG. 14, after the terminal transmits multiple BR CDMA codes for multiple connections to the base station, the terminal may transmit a bandwidth request header to an area allocated from the base station.

For example, the terminal may transmit multiple BR headers to resource regions for multiple connections allocated from the base station. That is, the terminal may transmit a bandwidth request message (BW-REQ message) to the allocated area after transmitting the BR CDMA code for the multiple connections. In this case, the bandwidth request message may include multiple connection identifiers CID A, CID B, and CID C for multiple connections.

The invention can be embodied in other specific forms without departing from the spirit and essential features of the invention. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention. It is also possible to form embodiments by combining claims that do not have an explicit citation in the claims or to include them as new claims by post-application correction.

1 is a diagram illustrating a frame structure used in a broadband wireless access system (eg, IEEE 802.16).

2 is a diagram illustrating an example of a general MAC header used in the IEEE 802.16 system.

3 is a diagram illustrating an example of a bandwidth request MAC header used in an IEEE 802.16 system.

4 is a diagram illustrating a method in which a terminal requests bandwidth from a base station on a contention basis.

5 is a diagram illustrating an example in which a terminal uses a general MAC subheader (GMSH).

6 is a diagram illustrating an example in which a terminal transmits a packet to a base station for multiple connections.

7 illustrates an example of a CDMA ranging code set used for bandwidth request for multiple accesses according to an embodiment of the present invention.

8 shows an example of multiple BW-REQ headers as another embodiment of the present invention.

9 shows another example of a multiple BW-REQ header according to another embodiment of the present invention.

10 shows another example of a multiple BW-REQ header as another embodiment of the present invention.

FIG. 11 is a diagram illustrating an example of requesting bandwidth for multiple connections according to another embodiment of the present invention. FIG.

12 illustrates another example of requesting bandwidth for multiple connections according to another embodiment of the present invention.

FIG. 13 illustrates another example of requesting bandwidth for multiple connections according to another embodiment of the present invention.

14 illustrates another example of requesting bandwidth for multiple connections according to another embodiment of the present invention.

Claims (12)

A bandwidth request method for multiple connections in a wireless access system, Transmitting a bandwidth request code for the multiple connectivity to a base station; Receiving a resource region for the multiple connectivity from the base station; And Requesting bandwidth for the multiple connection; The bandwidth request code for the multiple connection is a bandwidth request method, characterized in that using a ranging code allocated for the multi-bandwidth request of the ranging code set. The method of claim 1, Requesting the bandwidth, And performing a multi-bandwidth request header to the base station. The method of claim 2, And wherein the multi-bandwidth request header comprises at least one of a bandwidth request header, a bandwidth request list field, and a header check sequence. The method of claim 3, wherein The bandwidth request header includes at least one of a type field, a terminal identifier, a scheduling service type field, and a bandwidth request size field. The method of claim 3, wherein The bandwidth request list field includes one or more of a connection identifier, a bandwidth size field, and a scheduling service type field. The method of claim 2, And wherein the multi-bandwidth request header includes one or more identifiers assigned for the multi-connection. The method of claim 1, Requesting the bandwidth, And performing a multi-bandwidth header for each of the one or more identifiers allocated for the multi-bandwidth request. The method of claim 1, Requesting the bandwidth, And performing a multi-bandwidth request message to the base station. The method of claim 8, The multi-bandwidth request message includes a bandwidth request list number field, a connection identifier and a bandwidth request size field. The method of claim 8, And wherein the multi-bandwidth request message includes one or more identifiers assigned for the multi-connection. The method of claim 1, The bandwidth request code for the multiple connection is a bandwidth request method, characterized in that using one or more codes of the ranging code set for the bandwidth request. A bandwidth request method for multiple connections in a wireless access system, Receiving a bandwidth request code for the multiple connectivity from a terminal; Allocating a resource region for the multiple connectivity to the terminal; And Receiving a request for bandwidth for the multiple connections; The bandwidth request code for the multiple connection is a bandwidth request method, characterized in that using a ranging code allocated for the multi-bandwidth request of the ranging code set.

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