KR101629311B1 - Method for transmitting signal using or providing polling scheduling service - Google Patents

Abstract

A signal transmission method for using or providing a polling scheduling service is disclosed. The terminal may receive the polling scheduling information from the base station to the terminal, and may transmit a bandwidth request message to the base station at predetermined intervals based on the polling scheduling information. In this case, the polling scheduling information includes uplink valid period information allocated by the BS to the UE for polling and period information for transmitting a message requesting the bandwidth by the UE. By using the bandwidth request message transmission period and time, the BS can efficiently use downlink resources when allocating uplink resources of individual or grouped terminals supported by the real-time polling service. As a result, the resource overhead can be reduced.

Scheduling, real-time polling service, resource allocation

Description

TECHNICAL FIELD [0001] The present invention relates to a polling scheduling service, and more particularly, to a polling scheduling service,

The present invention relates to a method for transmitting a signal to use or provide a polling scheduling service.

A scheduling service and a bandwidth request method used in a conventional broadband wireless access system will be described. First, the bandwidth allocation and the request method will be briefly described.

The bandwidth request is a method used by the UEs to inform the BS that the UEs need uplink bandwidth allocation. There are two basic methods of requesting bandwidth in a general broadband wireless access system are a basic request method and a random access request method.

The basic request scheme is that the UE requests uplink bandwidth allocation by unicasting by polling the base station. In addition, the terminal may request an uplink bandwidth by piggybacking on the remaining bandwidth of the bandwidth already allocated from the base station.

The random access request scheme is a scheme in which a plurality of terminals compete with each other through a single uplink channel in a contention base and allocate uplink bandwidth.

The scheduling service is a service for efficiently performing uplink bandwidth request and resource allocation accordingly. Also, the scheduling service refers to a data processing method supported by a MAC (Media Access Control) scheduler in case of data transmission through a connection. The connection between the terminal and the base station is associated with one scheduling service. The scheduling service may be defined by a set of Quality of Service (QoS) parameters that perform service operations. Scheduling services include outbound transmission scheduling and uplink request / grant scheduling.

Outgoing transmission scheduling means selecting a specific frame or allocating bandwidth to transmit data. Outbound transmission scheduling may be performed at the base station (e.g., in the downlink) or at the terminal (e.g., in the uplink).

The uplink request / grant scheduling is performed by the base station in order to provide the bandwidth for the uplink transmission to the corresponding terminal or to provide the opportunity for the bandwidth request to the corresponding terminal. By specifying the scheduling type and associated QoS parameters, the base station scheduler can predict the throughput and required latency of the uplink traffic and can provide a poll or grant when appropriate.

(UGS), real time polling service (rtPS), non-real time polling service (nrtPS) and best effort service (BE) as the uplink request / ) Service type. Let's look more at real-time polling services.

A real-time polling service (rtPS) is an uplink scheduling type of a terminal for requesting real-time service for generating data packets of variable size periodically such as MPEG (Moving Pictures Experts Group) video. The real-time polling service can periodically provide real-time unicast request opportunities to the terminal.

In addition, it satisfies the real-time requirement of the service flow and allows the terminal to specify the desired resource size based on the real-time requirement. At this time, the terminal can use only a given request opportunity, and can not make a request through competition. In the present specification, a real-time polling service (rtPS) will be described as an example of an uplink request / grant scheduling service. However, other scheduling services may be used and may be applied differently depending on the requirements of the system.

1 is a diagram showing an example of a commonly used unicast polling method. The real time polling service (rtPS) used in FIG. 1 is an uplink scheduling type of a terminal for requesting data of a periodically variable size such as MPEG video in real time.

Referring to FIG. 1, a base station (Serving ABS # 1) transmits unicast polling on the downlink to a terminal (AMS # 1) supporting real time polling service (rtPS) (S110). That is, the BS can allocate uplink resources for a bandwidth request message (or a bandwidth request header) to be transmitted by the UE using an A-MAP (Advanced MAP) or UL-MAP. At this time, the A-MAP or the UL-MAP may be periodically allocated, and the period may use a value set in the DSA for generating the service flow.

The MS requests a bandwidth corresponding to the size of a data packet to be transmitted to the BS through the allocated uplink resource to the BS in step S120. At this time, the terminal can use a bandwidth request header or a bandwidth request message to request a bandwidth.

The base station receives a bandwidth request for transmitting an uplink data packet from the terminal and allocates the uplink resource to the terminal when the bandwidth requested by the terminal is allocable to transmit the UL grant to the terminal ). In step S140, the UE having allocated the bandwidth for the uplink area from the base station transmits the uplink data to the base station through the allocated transmission area. That is, a UE receiving a real time polling service (rtPS) can request and allocate uplink resources according to the procedure shown in FIG.

2 is a diagram illustrating an uplink allocation process for supporting a real-time polling service in two UEs.

2, the base station (ABS # 1 Serving) transmits an A-MAP IE (Advanced-MAP Information Element) of each of the AMS # 1 and the AMS # 2 in the downlink (S210 ). In each A-MAP IE, when the MS has data to be transmitted to the BS, the MS designates an uplink area for transmitting data information to be transmitted. If there is data to be transmitted to the BS, the MS transmits a bandwidth request header to the allocated region in the A-MAP IE (S220).

If there is no data to be transmitted to the base station, the bandwidth request header BR (Buffer size) field is set to 0 and the procedure is terminated. Here, BR denotes the size of data to be transmitted by the UE. If there is data to be transmitted, the BS transmits an UL grant (UL grant) to the terminal 1 and the terminal 2 to permit data transmission in the (N + 1) th frame (S230). Thereafter, the terminal 1 and the terminal 2 transmit data to the base station using the (N + 1) th frame (S240). S210 to S240 are repeatedly performed at the polling interval specified in the DSA procedure.

In the uplink allocation process for supporting the conventional real-time polling service, a terminal receiving a real-time polling service periodically allocates uplink resources corresponding to a bandwidth request header to know whether there is data to be transmitted to a base station, As the number of real-time polling service terminals increases, uplink resources should be allocated for the corresponding bandwidth request header of the corresponding period. In addition, a downlink is periodically allocated for an A-MAP IE for allocating an uplink resource of each UE, which has a problem in that resources can not be efficiently used.

SUMMARY OF THE INVENTION The present invention provides a method of transmitting a signal using a real-time scheduling service.

The technical problems to be solved by the present invention are not limited to the technical problems and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

According to another aspect of the present invention, there is provided a method for transmitting a signal using a polling scheduling service, the method comprising: receiving polling scheduling information from a base station to the terminal; And transmitting a bandwidth request message to the BS in a predetermined period based on the polling scheduling information, wherein the polling scheduling information includes uplink effective period information allocated for polling by the BS, And period information for transmitting a message requesting bandwidth by the terminal.

In addition, the polling scheduling information includes a time point at which the MS transmits a bandwidth request message or a time at which the MS transmits a bandwidth request message, and the MS requests bandwidth to the BS at the time point Message can be transmitted.

Also, the polling scheduling information may further include uplink resource area information allocated to the UE, and the UE may transmit the bandwidth request message to the allocated uplink resource area.

Preferably, the terminal transmits data using a resource area approved by the base station.

In addition, the viewpoints may be set to any one of a subframe, a frame, a superframe, and a slot.

The method may further include receiving modified polling scheduling information from the base station when at least one of the polling scheduling information is changed.

In addition, the message requesting bandwidth by the terminal may include at least one of a Flow IDentifier of the AT, a priority of the AT, and bandwidth size information.

Wherein the uplink resource allocation information includes the number of allocated OFDMA symbols, the number of subchannels, the allocated OFDMA symbol offset, and the subchannel offset information.

According to another aspect of the present invention, there is provided a method for transmitting a signal for providing a polling scheduling service, the method comprising: transmitting the polling scheduling information to a terminal; And receiving a message requesting bandwidth from the MS at predetermined intervals based on the polling scheduling information, wherein the polling scheduling information includes uplink effective period information allocated for polling by the BS, And may include periodic information that the terminal transmits a message requesting bandwidth.

According to the present invention, downlink resources can be efficiently used when allocating uplink resources of individual or grouped terminals supported by a real-time polling service. As a result, the resource overhead can be reduced.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. The detailed description set forth below in conjunction with the appended drawings is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The following detailed description includes specific details for a better understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details. For example, in the following description, certain terms are mainly described, but they need not be limited to these terms, and they may have the same meaning when they are referred to as arbitrary terms. Further, the same or similar elements throughout the present specification will be described using the same reference numerals.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

The techniques described below may be used in various communication systems, which may provide various communication services such as voice, packet data, and so on. The technology of the communication system can be used for a downlink or an uplink. The base station may be replaced by terms such as a fixed station, a base station, a Node B, an eNode B (eNB), an access point, an ABS, and the like. In addition, a mobile station (MS) can be replaced with terms such as a UE (User Equipment), a Subscriber Station (SS), a Mobile Subscriber Station (MSS), an AMS or a Mobile Terminal.

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

The terminal of the present invention may be a PDA (Personal Digital Assistant), a cellular phone, a PCS (Personal Communication Service) phone, a GSM (Global System for Mobile) phone, a WCDMA (Wideband CDMA) Can be used.

Embodiments of the present invention may be supported by standard documents disclosed in at least one of the Institute of Electrical and Electronics Engineers (IEEE) 802 systems, 3GPP systems, 3GPP LTE systems and 3GPP2 systems. That is, the steps or portions of the embodiments of the present invention that are not described in order to clearly illustrate the technical idea of the present invention can be supported by the documents. In addition, all terms disclosed in this document may be described by the standard document. In particular, embodiments of the present invention may be supported by documents such as P802.16-2004, P802.16e-2005 and P802.16Rev2, which are standard documents of the IEEE 802.16 system.

The specific terminology used in the following description is provided to aid understanding of the present invention, and the use of such specific terminology may be changed into other forms without departing from the technical idea of the present invention.

Polling refers to a type of multiple access control (MAC) method in which devices sharing a communication line sequentially or periodically check whether there is data to be transmitted. In particular, the polling method in wireless communication refers to an access control method in which a base station sequentially checks the presence / absence of a transmission request to a terminal and permits transmission to a terminal having a request.

Thus, polling is a procedure for the base station to specifically allocate the uplink bandwidth to the terminals. The bandwidth allocation method may be performed in a form of IE (Information Element) included in the polling MAP (A-MAP or UL-MAP) instead of the message type. In general, polling may be performed on a per-terminal basis. The bandwidth is always required on a CID (Connection Identifier) basis, and is allocated on a per-terminal basis.

Embodiments of the present invention are directed to a method of allocating a resource region for a bandwidth allocation request of one or more UEs supported by a real-time service. In the embodiments of the present invention, the uplink case will be described as an example, but it can be applied to the downlink according to the system requirement situation and the communication environment.

Grouping used in embodiments of the present invention refers to grouping one or more terminals included in the same information (for example, a frame or a PDU). Also, it may mean that the resource regions of the one or more terminals are configured into one group.

In the embodiments of the present invention, real-time polling service (rtPS) is exemplified among various scheduling services. However, embodiments of the present invention can be applied to other scheduling services according to user requirements or communication environment.

The uplink scheduling type of a terminal supporting real-time polling service can be classified into a message-based method and a fixed dedicated channel-based method.

In this specification, a scheme for efficiently using downlink resources when allocating an uplink region for a bandwidth allocation request of a mobile station supported by a real-time polling service is defined.

For uplink scheduling of a terminal supporting a real-time polling service, a base station can allocate uplink resources for a bandwidth request header (or a bandwidth request message) to be transmitted by the terminal. Here, the allocated uplink information may be transmitted to the UE through the A-MAP or the UL-A-MAP. At this time, the A-MAP or UL-A-MAP may be referred to as a polling A-MAP IE. The polling A-MAP IE may include information such as a time point at which a terminal transmits a bandwidth request message, a polling start time, a period, an expiration period, and an uplink resource allocation region.

The time point at which the terminal transmits the bandwidth request message may mean, for example, a start frame number. The polling start time can be, for example, a start offset. The period may mean, for example, a polling period, and the polling period is a period during which the terminal can transmit a bandwidth request message. The duration may be, for example, a period during which the uplink allocated by the BS for polling the MS is valid. The polling is valid for the valid period and the base station may not transmit the IE (Information Element) to the corresponding terminal every time the UL region is allocated. That is, the base station may not transmit the polling period polling A-MAP IE during the validity period. However, if the uplink resource allocation is canceled or the parameters such as the allocated area and the period are changed during the valid period, the base station can transmit the polling A-MAP IE including the changed information to the terminal.

The BS can indicate the uplink resource allocation area of the UE included in the polling A-MAP IE in the following manner.

First, an uplink resource allocation region of a UE is represented by an OFDMA symbol offset, a subchannel offset, a number of OFDMA symbols, and a number of subchannels. . And may be reconfigured and designated in units of a logical resource unit (LRU) or a distributed resource unit (DRU).

Also, the uplink resource allocation area can be designated as a fixed channel. For example, a fixed channel for an uplink polling channel or a bandwidth request (BR). However, it is not limited to a specific channel. It is designated as an indexing number or an allocation offset of the fixed channel.

3 is a diagram schematically illustrating an uplink allocation procedure for supporting a real-time polling service.

Referring to FIG. 3, the BS may allocate uplink resources corresponding to a bandwidth request header (or a bandwidth request message) to be transmitted to the UE. The allocated uplink information may be transmitted to the UE through the A-MAP or UL-A-MAP (S310). At this time, the A-MAP or the UL-A-MAP may be referred to as a polling A-MAP IE. The polling A-MAP IE may include information such as a time point at which a terminal transmits a bandwidth request message, a polling start time, a period, an expiration period, and an uplink resource allocation region.

The time point at which the terminal transmits the bandwidth request message may mean, for example, a start frame number. The polling start time can be, for example, a start offset. The period may mean, for example, a polling period, and the polling period is a period during which the terminal can transmit a bandwidth request message.

The duration may be, for example, a period during which the uplink allocated by the BS for polling the MS is valid. The polling is valid for the valid period and the BS may not transmit the IE to the corresponding terminal every time the UL region is allocated. That is, the base station may not transmit the polling period polling A-MAP IE during the validity period. However, if the uplink resource allocation is canceled or parameters such as allocation area and period are changed during the valid period, the base station can transmit the polling A-MAP IE including the changed information to the UE.

Thereafter, the MS may transmit a bandwidth request header or a bandwidth request message to the UL region allocated to the Nth frame (S320). The bandwidth request message may include information such as a flow ID, a priority, a bandwidth size, and the like for the UE to transmit a data packet.

Thereafter, the BS receives a bandwidth request for transmitting an uplink data packet from the UE, allocates the uplink resource to the (N + 1) -th frame and allocates the uplink grant (UL grant) To the terminal (S330). In step S340, the mobile station having allocated the bandwidth for the uplink region from the base station transmits the data to the base station through the N + 1th frame, which is the allocated transmission region. S310 to S340 may be one cycle in the real-time polling service.

In step S350, the MS may transmit a bandwidth request header to the BS in accordance with the period and the valid period information received in step S310. Then, when receiving the bandwidth request header for transmitting the uplink data packet from the UE, the UE assigns the uplink resource to the (N + 5) th frame if the requested bandwidth is available, (S360).

In step S370, the UE having allocated the bandwidth for the uplink region from the BS transmits the data to the BS through the N + 5th frame, which is the allocated transmission region. S350 to S370 may also be one cycle in the real-time polling service.

At this time, if the two periods are set to one effective time, after the expiration time passes, the base station can allocate uplink resources corresponding to a bandwidth request header (or a bandwidth request message) to be transmitted to the terminal again. The allocated uplink information may be transmitted to the UE through the A-MAP or the UL-A-MAP. As a result of this process, it is possible to solve the problem of periodically allocating uplink resources corresponding to the bandwidth request header. In addition, it is possible to solve the problem of inefficient use of resources for periodically allocating the downlink for the A-MAP IE for uplink resource allocation of each UE.

The following Tables 1 and 2 are tables showing an embodiment of the A-MAP IE when the BS transmits a feedback_poloring_IE (or a polling A-MAP IE: not limited to a specific IE) for each MS.

Syntax Size (bits) Description (Descripition / Notes) A-MAP IE 4 Feedback_Polling_IE MCS 2 MCS level for sending feedback header Resource allocation 7 Uplink resource allocation Assignment related
(Allocation Relevance) 3 Define allocation associations. An offset from a first uplink subframe when a first uplink feedback header is transmitted in an uplink resource allocated after a downlink subframe including an IE. The starting value of the subframe offset is 1. Allocation durartion (d) 3 Assignment is valid for 4 ^(d-1) starting from the frame defined by assignment relevance. If d is 0b000, the transmission of the pre-scheduled feedback header (or BR header) is canceled. If d is 0b111, the pre-scheduled feedback header transmission is valid until the base station commands it to release it. The period (p) 2 For example, a feedback header (or BR header) is transmitted for every ^2p super frame DRLU 5 The downlink LRU represents the type of RU and the number of RUs performing feedback.
0b00000 to 0b10111: For DLRU = n, nth subband CRU
0b11000: Whole bandwidth
0b11001: Frequency partition 0
0b11010: Power boosted reuse N frequency partition
0b11011: Whole subband CRUs (CRUs)
0b11100: DRU / mini-band CRU
0b11101: Multi-carrier
0b11110 ~ 0b11111: Reserved (Reserved)
Feedback type 4 See table xxx (table xxx). N 3 If DLRU is 0b11110, it indicates the multi-carrier for feedback, otherwise it indicates how much PMI and CQI should be reported for the neighboring cell. Padding Variable padding to reach byte boundary MCRC 16, up to 48 Station IDFH Masked 16-bit CRC

Feedback type Feedback content Explanation Uncertainty (TBD) N × (PMI (6 bits) + CQI difference (2 bits) + Temp_BSID) Interference coordination type (ICT) = 0b01
Temp_BSID, downlink PMI recommendation feedback for neighbor cell ID, weakest interfering PMI and CQI difference, and Temp_BSID are mentioned in 15.3.11.1.1.1. Temp_BSID is the diversity set member ID assigned to this BS. Uncertainty (TBD) N × (PMI (6 bits) + CQI difference (2 bits) + Temp_BSID) Interference coordination type (ICT) = 0b01
Temp_BSID, downlink PMI recommendation feedback for neighbor cell ID, weakest interfering PMI and CQI difference, and Temp_BSID are mentioned in 15.3.11.1.1.1. Temp_BSID is the diversity set member ID assigned to this BS. Uncertainty (TBD) N × (PMI (6 bits) + CQI difference (2 bits) + Temp_BSID) Interference coordination type (ICT) = 0b10
Temp_BSID, downlink PMI recommendation feedback for neighbor cell ID, weakest interfering PMI and CQI difference, and Temp_BSID are mentioned in 15.3.11.1.1.1. Temp_BSID is the diversity set member ID assigned to this BS. Uncertainty (TBD) N × (PMI (6 bits) + CQI difference (2 bits) + Temp_BSID) Interference coordination type (ICT) = 0b11
Temp_BSID, downlink PMI recommendation feedback for neighbor cell ID, weakest interfering PMI and CQI difference, and Temp_BSID are mentioned in 15.3.11.1.1.1. Temp_BSID is the diversity set member ID assigned to this BS. Uncertainty (TBD) Quantized correlation matrix 6 bits for 2Tx, 28 bits for 4Tx, 120 bits for 8Tx Uncertainty (TBD) [~ 6] byte BR header for rtPS

The base station can poll the uplink for a bandwidth request at a specified period during a duration of a grouped terminal. The grouped terminals may all use the same validity period or period, or may specify a validity period and a period for each of the terminals. In this case, allocation information of a plurality of UEs grouped in one polling A-MAP IE may be included. The A-MAP IE of the grouped UE may be further added with the following parameter information with respect to the contents described in Table 1 above.

Terminal identifier information may be further included. The terminal identifier may be a terminal ID (or station ID), a reduced ID, a compacted ID, a BRCH ID, or the like as a terminal indicator. In addition, the number information of the grouped terminals may be further included. The size of the number information of the grouped terminals may be 8 bits. Also, the validity period and the period information of the grouped terminals may be further included.

Validity period, and period are the same or different for each IE. The validity period indicator may be one bit in size, and if the validity period indicator indicates 0, it means that the grouped terminals have the same validity period. Alternatively, if the validity period indicator indicates 1, validity period information is further added for each grouped terminal . Also, if the period indicator indicates 0, the grouped UEs all have the same period. Otherwise, period information can be further added for each grouped UE.

Validity period, and periodicity are partially the same or different per IE.

The validity period indicator may be one bit in size, and if the validity period indicator indicates 0, it may mean that it has the same validity period as that of the immediately preceding terminal, otherwise validity period information may be further added if it indicates 1 . In addition, if the period indicator indicates 0, it means that it has the same period as that of the immediately preceding UE, and if it indicates 1, the period information can be further added.

Further, report mode information may be further included. The reporting mode information can be of a size of 1 bit, and if it indicates 0, it means all information for requesting bandwidth, otherwise 1 can mean bandwidth request size (BR size).

Further, length information may be further included. This length information size can be 4 bits and can represent the length of the message in bytes.

As the number of terminals supported by the real-time polling service increases, the base station can reduce the downlink overhead (for example, polling A-MAP IE) transmitted to each terminal.

That is, according to the present invention, downlink resources can be efficiently used and resource overhead can be reduced when uplink resources of individual or grouped terminals that are supported by the real-time polling service are allocated.

As described above, a method of transmitting a signal by a terminal using a real-time polling service can be performed by a plurality of units including a processor in a terminal device, which will be described below.

Table 3 to Table 5 below show another embodiment of the A-MAP IE when the BS transmits the feedback polling IE for each UE. The UE may periodically transmit MIMO related feedback information, a bandwidth request header or a PHY channel report (e.g., UL TX power, UL headroom) , And the BS can transmit uplink resource information periodically allocated to the UE to the UE using the feedback polling IE. Therefore, it is necessary for the base station to inform the UE of which information is to be transmitted through the uplink resources allocated through the feedback polling IE. That is, it is necessary for the BS to inform the UE whether the uplink resource allocated to the UE is for the purpose of transmitting a bandwidth request header of the UE, for transmitting MIMO related feedback information, or for using a physical channel report.

When the allocated resources are used for the purpose of transmitting the bandwidth request header, the UE can use an extended real-time polling service (ertPS) having a periodicity, a real-time polling service (rtPS) Service and an aGPS scheduling type and is used for an uplink resource for non-real-time polling service (nrtPS) and user data of scheduling type BE (Best Effort) It can also be used when requesting.

Table 3 below is a table describing still another embodiment of the A-MAP IE when the BS transmits the feedback polling IE for each UE.

Syntax Size (bits) Description (Notes) A-MAP IE 4 Feedback_Polling_IE Allocation durartion (d) 3 The assignment is valid for 2 ^(d-1) starting from the frame defined by the assignment relevance. If d is 0b000, the transmission of the pre-scheduled feedback header (or BR header) is canceled. If d is 0b111, the pre-scheduled feedback header transmission is valid until the base station commands it to release it. If (d == 0b00) { Resource Index 11 Identification of resource indexes for previous assigned persistent support that had been assigned to roles
5 MHz: 0 in first 2 MSB bits + 9 bits for resource index
10 MHz: 11 bits for resource index
20 MHz: 11 bits for resource index
The resource index includes the location and allocation size HFA 3 HARQ feedback channel assignment for feedback channel de-allocation confirmation } else if (d! = 0b00) { Dedicated UL allocation 0b0: Non-dedicated UL resources are allocated. The base station provides a UL assignment for the MIMO feedback IE transmission on the UL A-MAP IE in each designated transmission frame defined by the UL A-MAP IE
0b1: A dedicated UL resource is included in this IE. If (Dedicated UL allocation == 0b1) { I _SizeOffset
5 The offset used to calculate the burst size index (offset used to calculate the burst size index) Resource Index 11 5 MHz: 0 in first 2 MSB bits + 9 bits for resource index
10 MHz: 11 bits for resource index
20 MHz: 11 bits for resource index
The resource index includes the location and allocation size } Period (p) 3 Transmit feedback header every 4 ^p frame Feedback_IE_type 2 0b00: feedback for single-BS MIMO operation
0b01: feedback for multi-BS MIMO operation
0b10: feedback for bandwidth operation
0b11: feedback for PHY channel report operation If (Feedback_IE_type == 0b00) { Single-BS MIMO feedback request If (Dedicated UL allocation == 0b1) { MEF One MIMO encoder format
0b0: SFBC
0b1: Vertical encoding with Mt = 2 if Nt = 2 or 4, or Mt = 1 if Nt = 1
Non-adaptive precoding at the terminal is used. Nt is the number of transmit antennas in the MS. (Non-adaptive precoding shall be used at the MS. Nt is the number of transmit antennas at the AMS). } Transmit Correlation Matrix (Transmit_Correlation_Matrix) One 0b0: feedback of the transmit correlation matrix indicated by the CM (CM)
0 b 1: feedback of the quantized BS transmit correlation matrix only;
If CM = 0b1, the transmit correlation matrix will be feedback (CM = 0b1) If (Transmit_Correlation_Matrix == 0b0) { The base station requests the UE for CQI and CSI feedback for a specific MFM (ABS requests AMS to feedback CQI and CSI for a specific MFM.) MaxMt variable 1 or 2 The number of variable bits depends on the number of transmit antennas Nt (Variable number of bits - depends on number of transmit antennas Nt)
If Nt = 2 (SU-MIMO and MU-MIMO): 0b0: 1
0b1: 2
If Nt = 4 (SU-MIMO and MU-MIMO):
0b00: 1
0b01: 2
0b10: 3
0b11: 4
If Nt = 8 (SU-MIMO):
0b000: 1
0b001: 2
0b011: 4
0b111: 8
If Nt = 8 (MU-MIMO):
0b00: 1
0b01: 2
0b10: 3
0b11: 4
MFM 3 MIMO feedback mode for CQI and CSI feedback to the base station     If (MFM = 2, 3, 5, 6) { Feedback of CQI and CSI for localized resource units < RTI ID = 0.0 > (CQI < / RTI & Num_best_subbands 3 0b000: report all subbands to all subbands
0b001 ~ 0b111: Number of best subbands to report
1 < Num_best_subbands = N _sub       }     If (MFM == 3,4,6,7) { CL SU and MU MIMO    CM [TBD] [TBD]    CS One 0b0: report PMI from the base codebook
0b1: report PMI from the codebook subset    } If (MFM = 0, 1, 2, 5) { Measurement Method Indication One 0b0: Use the midamble for CQI measurements (Use the midamble for CQI measurements)
0b1: Use pilots in OL region with MaxMt streams for CQI measurements (OLT with MaxMt streams for CQI measurements)   }  } } If (Feedback_IE_type == 0b01) { Multi-BS MIMO feedback request TRU 2 A target RU indicating which type of RU or RUs to operate for feedback (RU indicating which RUs or which type of RU to work on for feedback)
0b00: Recent best subbands reported for single base station MIMO (Latest best subbands reported for single BS MIMO)
0b01: Whole bandwidth
0b10: FFR partition 0
0b11: boosted FFR partition ICT 2 0b00: PMI restriction for single-BS precoding;
0b01: PMI recommendation for single-BS precoding;
0b10: CL-MD for multi-BS precoding;
0b11: Co-MIMO for multi-BS precoding; CS One 0b0: report PMI from the base codebook
0b1: report PMI from the codebook subset N_multiBS_reports 3 N_multiBS_reports indicates the number of reports. If (ICT = 0b10 or 0b11) { CPI One Concatenating PMI Feedback indication;
0b0: feedback CPMI for N_multiBS_reports-1 diversity set members;
0b1: no feedback CPMI If (ICT = 0b11) {       MaxUser 2 The maximum number of users supported by co-MIMO in the same resource (Co-MIMO in the same resource)
0b00: 2 users
0b01: 3 users
0b10: 4 users
0b11: reserved     }    }   } If (Feedback_IE_type == 0b10 or 0b11) { Bandwidth request / PHY channel report HFA 3 A HARQ feedback channel allocation for bandwidth request / a physical channel report header (PHY channel report header) Long TTI indicator One Indicates the number of subframes spanned by the allocated resource (Indicates number of subframes spanned by the allocated resource)
0b0: 1 subframe (default)
0b1: FDD or all uplink subframes (4 UL subframes for FDD or all UL subframes for TDD) for four uplink subframes or TDD.
If the number of downlink subframes D is smaller than the number U of uplink subframes, Long TTI Indicator = 0b1 (If number of DL subframes, D, is less than number of UL subframes, U, Long TTI Indicator = 0b1)   }  } Padding Variable Padding to reach byte boundary MCRC 16 16-bit CRC masked by station ID masked by station ID

Referring to Table 3, the Feedback_IE_type may be of a size of 2 bits, where the four bit values are feedback (0b00) for single-base station MIMO operation, feedback (0b01) for multi-base station MIMO operation, (0b10) for the physical channel reporting operation, and feedback (0b11) for the physical channel reporting operation. That is, if the Feedback_IE_type value is 0b00, it can indicate a single-base-station MIMO feedback request. Further, if the Feedback_IE_type value is 0b01, feedback for a multi-base station MIMO operation can be indicated. On the other hand, if Feedback_IE_type is 0b10 and 0b11, it indicates IE for bandwidth request purpose and IE for physical channel report, respectively.

Table 4 below is a table describing still another embodiment of the A-MAP IE when the BS transmits the feedback polling IE for each UE.

Syntax Size (bits) Description (Notes) A-MAP IE 4 Feedback_Polling_IE Allocation durartion (d) 3 The assignment is valid for 2 ^(d-1) starting from the frame defined by the assignment relevance. If d is 0b000, the transmission of the pre-scheduled feedback header (or BR header) is canceled. If d is 0b111, the pre-scheduled feedback header transmission is valid until the base station commands it to release it. If (d == 0b00) { Resource Index 11 Confirmation of the resource index for the previously allocated persistent support that had been pertinent to the role (Confirmation of the resource index for a previously assigned persistent resource that has been deallocated)
5 MHz: 0 in first 2 MSB bits + 9 bits for resource index
10 MHz: 11 bits for resource index
20 MHz: 11 bits for resource index
The resource index includes the location and allocation size HFA 3 Feedback channel de-allocation confirmation (HARQ) feedback channel allocation for a feedback channel de-allocation confirmation, } else if (d! = 0b00) { Dedicated UL allocation One 0b0: Non-dedicated UL resources are allocated. The base station provides a UL assignment for the MIMO feedback IE transmission on the UL A-MAP IE in each designated transmission frame defined by the UL A-MAP IE
0b1: A dedicated UL resource is included in this IE. If (Dedicated UL allocation == 0b1) { I _sizeoffset
5 The offset used to calculate the burst size index (offset used to calculate the burst size index) Resource Index 11 5 MHz: 0 in first 2 MSB bits + 9 bits for resource index
10 MHz: 11 bits for resource index
20 MHz: 11 bits for resource index
The resource index includes the location and allocation size } Period (p) 3 Transmit feedback header every 4 ^p frame Feedback_IE_type One 0b0: feedback for single-BS MIMO operation
0b1: feedback for other operations If (Feedback_IE_type == 0b0) { Single-BS MIMO feedback request If (Dedicated UL allocation == 0b1) { MEF One MIMO encoder format
0b0: SFBC
0b1: Vertical encoding with Mt = 2 if Nt = 2 or 4, or Mt = 1 if Nt = 1

Non-adaptive precoding at the terminal is used. Nt is the number of transmit antennas in the MS. (Non-adaptive precoding shall be used at the MS. Nt is the number of transmit antennas at the AMS). } Transmit Correlation Matrix (Transmit_Correlation_Matrix) One 0b0: feedback of the transmit correlation matrix indicated by the CM (CM)
0 b 1: feedback of the quantized BS transmit correlation matrix only;
If CM = 0b1, the transmit correlation matrix will be feedback (CM = 0b1) If (Transmit_Correlation_Matrix == 0b0) { The base station requests the UE for CQI and CSI feedback for a specific MFM (ABS requests AMS to feedback CQI and CSI for a specific MFM.) MaxMt variable 1 or 2 The number of variable bits depends on the number of transmit antennas Nt (Variable number of bits - depends on number of transmit antennas Nt )
If Nt = 2 (SU-MIMO and MU-MIMO):
0b0: 1
0b1: 2
If Nt = 4 (SU-MIMO and MU-MIMO):
0b00: 1
0b01: 2
0b10: 3
0b11: 4
If Nt = 8 (SU-MIMO):
0b000: 1
0b001: 2
0b011: 4
0b111: 8
If Nt = 8 (MU-MIMO):
0b00: 1
0b01: 2
0b10: 3
0b11: 4
MFM 3 A MIMO feedback mode for the UE to perform CQI and CSI feedback to the base station (MIMO feedback mode for which AMS shall feedback CQI and CSI to the ABS)     If (MFM = 2, 3, 5, 6) { Feedback of CQI and CSI for localized resource units &lt; RTI ID = 0.0 &gt; (CQI &lt; / RTI & Num_best_subbands 3 0b000: report all subbands to all subbands
0b001 ~ 0b111: Number of best subbands to report
1 < Num_best_subbands = N _sub       }     If (MFM == 3,4,6,7) { CL SU and MU MIMO    CM [TBD] [TBD]    CS One 0b0: report PMI from the base codebook
0b1: report PMI from the codebook subset    } If (MFM = 0, 1, 2, 5) { Measurement Method Indication One 0b0: Use the midamble for CQI measurements (Use the midamble for CQI measurements)
0b1: Use pilots in OL region with MaxMt streams for CQI measurements (OLT with MaxMt streams for CQI measurements)   }  } } Else { Feedback for other operations Sub-Feedback_IE_type One 0b0: feedback for Multi-BS MIMO request operation
0b1: feedback for bandwidth request / PHY channel report If (Sub-Feedback_IE_type == 0b0) { Multi-BS MIMO feedback request TRU 2 A target RU indicating which type of RU or RUs to operate for feedback (RU indicating which RUs or which type of RU to work on for feedback)
0b00: Recent best subbands reported for single base station MIMO (Latest best subbands reported for single BS MIMO)
0b01: Whole bandwidth
0b10: FFR partition 0
0b11: boosted FFR partition ICT 2 0b00: PMI restriction for single-BS precoding;
0b01: PMI recommendation for single-BS precoding;
0b10: CL-MD for multi-BS precoding;
0b11: Co-MIMO for multi-BS precoding; CS One 0b0: report PMI from the base codebook
0b1: report PMI from the codebook subset N_multiBS_reports 3 N_multiBS_reports indicates the number of reports. If (ICT = 0b10 or 0b11) { CPI One Concatenating PMI Feedback indication;
0b0: feedback CPMI for N_multiBS_reports-1 diversity set members;
0b1: no feedback CPMI If (ICT = 0b11) {       MaxUser 2 The maximum number of users supported by co-MIMO in the same resource (Co-MIMO in the same resource)
0b00: 2 users
0b01: 3 users
0b10: 4 users
0b11: reserved     }    }   } If (Sub-Feedback_IE_type == 0b1) { Bandwidth request / PHY channel report HFA 3 A HARQ feedback channel allocation for bandwidth request / a physical channel report header (PHY channel report header) Long TTI indicator One Indicates the number of subframes spanned by the allocated resource (Indicates number of subframes spanned by the allocated resource)
0b0: 1 subframe (default)
0b1: FDD or all uplink subframes (4 UL subframes for FDD or all UL subframes for TDD) for four uplink subframes or TDD.
If the number of downlink subframes D is smaller than the number U of uplink subframes, Long TTI Indicator = 0b1 (If number of DL subframes, D, is less than number of UL subframes, U, Long TTI Indicator = 0b1)   }  } } Padding Variable Padding to reach byte boundary MCRC 16 16-bit CRC masked by station ID masked by station ID

Referring to Table 4, the Feedback_IE_type may be one bit in size, and the two bit values may each indicate feedback for a single-base station MIMO operation, feedback for another operation. For example, if the Feedback_IE_type value is 0b0, it may indicate a single-base-station MIMO feedback request. Alternatively, if the Feedback_IE_type value is 0b1, it may indicate feedback for another operation.

Also, the Sub-Feedback_IE_type may be one bit in size, and each of the two bit values may indicate feedback for multi-base station MIMO request operation, or feedback for bandwidth request or feedback for physical channel reporting. For example, if the Sub-Feedback_IE_type value is 0b0, it indicates feedback for a multi-base station MIMO request operation, otherwise it indicates feedback for a bandwidth request or feedback for a physical channel report if the Sub-Feedback_IE_type value is 0b1.

That is, when the sub-feedback_IE_type is 0b1, the UE can use the bandwidth request or the physical channel reporting purpose. In this case, the UE can transmit a header including only bandwidth request information or a header including only uplink transmission power and bandwidth request information, or a physical channel report information.

Table 5 below is a table describing still another embodiment of the A-MAP IE when the BS transmits the feedback polling IE for each UE.

Syntax Size (bits) Description (Notes) A-MAP IE 4 Feedback_Polling_IE Allocation durartion (d) 3 The assignment is valid for 2 ^(d-1) starting from the frame defined by the assignment relevance. If d is 0b000, the transmission of the pre-scheduled feedback header (or BR header) is canceled. If d is 0b111, the pre-scheduled feedback header transmission is valid until the base station commands it to release it. If (d == 0b00) { Resource Index 11 Confirmation of the resource index for the previously allocated persistent support that had been pertinent to the role (Confirmation of the resource index for a previously assigned persistent resource that has been deallocated)
5 MHz: 0 in first 2 MSB bits + 9 bits for resource index
10 MHz: 11 bits for resource index
20 MHz: 11 bits for resource index
The resource index includes the location and allocation size HFA 3 Feedback channel de-allocation confirmation (HARQ) feedback channel allocation for a feedback channel de-allocation confirmation, } else if (d! = 0b00) { Dedicated UL allocation One 0b0: Non-dedicated UL resources are allocated. The base station provides a UL assignment for the MIMO feedback IE transmission on the UL A-MAP IE in each designated transmission frame defined by the UL A-MAP IE
0b1: A dedicated UL resource is included in this IE. If (Dedicated UL allocation == 0b1) { I _SizeOffset
5 The offset used to calculate the burst size index (offset used to calculate the burst size index) Resource Index 11 5 MHz: 0 in first 2 MSB bits + 9 bits for resource index
10 MHz: 11 bits for resource index
20 MHz: 11 bits for resource index
The resource index includes the location and allocation size } Period (p) 3 Transmit feedback header every 4 ^p frame Feedback_IE_type One 0b0: feedback for single-BS MIMO operation
0b1: feedback for other operations If (Feedback_IE_type == 0b0) { Single-BS MIMO feedback request If (Dedicated UL allocation == 0b1) { MEF One MIMO encoder format
0b0: SFBC
0b1: Vertical encoding with Mt = 2 if Nt = 2 or 4, or Mt = 1 if Nt = 1

Non-adaptive precoding at the terminal is used. Nt is the number of transmit antennas in the MS. (Non-adaptive precoding shall be used at the MS. Nt is the number of transmit antennas at the AMS). } Transmit Correlation Matrix (Transmit_Correlation_Matrix) One 0b0: feedback of the transmit correlation matrix indicated by the CM (CM)
0 b 1: feedback of the quantized BS transmit correlation matrix only;
If CM = 0b1, the transmit correlation matrix will be feedback (CM = 0b1) If (Transmit_Correlation_Matrix == 0b0) { The base station requests the UE for CQI and CSI feedback for a specific MFM (ABS requests AMS to feedback CQI and CSI for a specific MFM.) MaxMt variable 1 or 2 The number of variable bits depends on the number of transmit antennas Nt (Variable number of bits - depends on number of transmit antennas Nt )
If Nt = 2 (SU-MIMO and MU-MIMO):
0b0: 1
0b1: 2
If Nt = 4 (SU-MIMO and MU-MIMO):
0b00: 1
0b01: 2
0b10: 3
0b11: 4
If Nt = 8 (SU-MIMO):
0b000: 1
0b001: 2
0b011: 4
0b111: 8
If Nt = 8 (MU-MIMO):
0b00: 1
0b01: 2
0b10: 3
0b11: 4
MFM 3 A MIMO feedback mode for the UE to perform CQI and CSI feedback to the base station (MIMO feedback mode for which AMS shall feedback CQI and CSI to the ABS)     If (MFM = 2, 3, 5, 6) { Feedback of CQI and CSI for localized resource units &lt; RTI ID = 0.0 &gt; (CQI &lt; / RTI & Num_best_subbands 3 0b000: report all subbands to all subbands
0b001 ~ 0b111: Number of best subbands to report
1 < Num_best_subbands = N _sub       }     If (MFM == 3,4,6,7) { CL SU and MU MIMO    CM [TBD] [TBD]    CS One 0b0: report PMI from the base codebook
0b1: report PMI from the codebook subset    } If (MFM = 0, 1, 2, 5) { Measurement Method Indication One 0b0: Use the midamble for CQI measurements (Use the midamble for CQI measurements)
0b1: Use pilots in OL region with MaxMt streams for CQI measurements (OLT with MaxMt streams for CQI measurements)   }  } } Else { Feedback for other operation Sub-Feedback_IE_type One 0b0: feedback for Multi-BS MIMO request operation
0b1: feedback for bandwidth request / PHY channel report If (Sub-Feedback_IE_type == 0b0) { Multi-BS MIMO feedback request TRU 2 A target RU indicating which type of RU or RUs to operate for feedback (RU indicating which RUs or which type of RU to work on for feedback)
0b00: Recent best subbands reported for single base station MIMO (Latest best subbands reported for single BS MIMO)
0b01: Whole bandwidth
0b10: FFR partition 0
0b11: boosted FFR partition ICT 2 0b00: PMI restriction for single-BS precoding;
0b01: PMI recommendation for single-BS precoding;
0b10: CL-MD for multi-BS precoding;
0b11: Co-MIMO for multi-BS precoding; CS One 0b0: report PMI from the base codebook
0b1: report PMI from the codebook subset N_multiBS_reports 3 N_multiBS_reports indicates the number of reports. If (ICT = 0b10 or 0b11) { CPI One Concatenating PMI Feedback indication;
0b0: feedback CPMI for N_multiBS_reports-1 diversity set members;
0b1: no feedback CPMI If (ICT = 0b11) {       MaxUser 2 The maximum number of users supported by co-MIMO in the same resource (Co-MIMO in the same resource)
0b00: 2 users
0b01: 3 users
0b10: 4 users
0b11: reserved     }    }   } If (Sub-Feedback_IE_type == 0b1) { For other operations Extended type 3 0b000: Bandwidth request
0b001: PHY channel report
0b010 ~ 0b111: reserved If (Extended type == 0b000) { Bandwidth request HFA 3 A HARQ feedback channel allocation for bandwidth request / a physical channel report header (PHY channel report header) Long TTI indicator One Indicates the number of subframes spanned by the allocated resource (Indicates number of subframes spanned by the allocated resource)
0b0: 1 subframe (default)
0b1: FDD or all uplink subframes (4 UL subframes for FDD or all UL subframes for TDD) for four uplink subframes or TDD.
If the number of downlink subframes D is smaller than the number U of uplink subframes, Long TTI Indicator = 0b1 (If number of DL subframes, D, is less than number of UL subframes, U, Long TTI Indicator = 0b1)   }  If (Extended type == 0b001) { PHY channel report HFA 3 HARQ feedback channel allocation for PHY channel report (PHY channel report header) Long TTI indicator One Indicates the number of subframes spanned by the allocated resource (Indicated number of subframes spanned by the allocated resource)
0b0: 1 subframe (default)
0b1: 4 uplink subframes for FDD or all uplink subframes for TDD (4 UL subframes for FDD or all UL subframes for TDD)
If the number D of DL subframes is smaller than the number U of UL subframes, Long TTI Indicator = 0b1 (If number of DL subframes, D, is less than number of UL subframes, U, Long TTI Indicator = 0b1)     }    }   } } Padding Variable Padding to reach byte boundary MCRC 16 16-bit CRC masked by station ID masked by station ID

Referring to Table 5, as in Table 4 above, the Feedback_IE_type may be one bit in size, and the two bit values may indicate feedback for a single-base station MIMO operation, feedback for another operation, respectively. For example, if the Feedback_IE_type value is 0b0, it may indicate a single-base-station MIMO feedback request. Alternatively, if the Feedback_IE_type value is 0b1, it may indicate feedback for another operation.

Also, the Sub-Feedback_IE_type may be one bit in size, and each of the two bit values may indicate feedback for a multi-base station MIMO request operation or may indicate feedback for another operation. For example, if the Sub-Feedback_IE_type value is 0b0, it indicates feedback for a multi-base station MIMO request operation, otherwise, if the Sub-Feedback_IE_type value is 0b1, it indicates feedback for another operation.

Also, as shown in Table 5, the extended type may be 3 bits. The bit value 0b000 may be feedback for bandwidth request, 0b001 may be feedback for physical channel reporting, and 0b010 through 0b111 may be reserved.

4 is a block diagram illustrating an example of a terminal device structure.

4, a terminal device may include an RF unit 410, a display unit 420, a user interface 430, a processor (or digital signal processor) 440, and a memory 450. The terminal may further include a power management module (not shown), an antenna (not shown), a battery (not shown), a SIM (Subscriber Indicator Module) card (not shown) .

The user may enter instruction information, such as a telephone number, in the user interface unit 430.

Processor 440 may communicate the indication information to RF unit 410 to initiate communication, such as, for example, transmitting a wireless signal comprising voice communication data. The RF unit 410 may include a transmitter and a receiver for transmitting and receiving wireless signals. At this time, the antenna facilitates transmission and reception of radio signals. Upon receiving the wireless signal, the RF unit 410 may forward the received wireless signal and convert the signal to baseband frequency such that the processor 440 processes the signal. The processed signal at the processor 440 may be audible through the speaker or may be output as readable information. The memory unit 450 is located inside or outside the processor, and can exchange data with the processor by various well-known means. The software code may be stored in the memory unit 450 and driven by the processor 440.

The processor 440 may include the protocols and functions necessary to perform the various processes described herein for IEEE 802.16m, Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A)

The embodiments described above are those in which the elements and features of the present invention are combined in a predetermined form. Each component or feature shall be considered optional unless otherwise expressly stated. Each component or feature may be implemented in a form that is not combined with other components or features. It is also possible to construct embodiments of the present invention by combining some of the elements and / or features. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of certain embodiments may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments. It is clear that the claims that are not expressly cited in the claims may be combined to form an embodiment or be included in a new claim by an amendment after the application.

Embodiments in accordance with the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of hardware implementation, an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) Field Programmable Gate Arrays), a processor, a controller, a microcontroller, a microprocessor, or the like.

In the case of an implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, a procedure, a function, or the like which performs the functions or operations described above. The software code can be stored in a memory unit and driven by the processor. The memory unit may be located inside or outside the processor, and may exchange data with the processor by various well-known means.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

1 is a diagram showing an example of a commonly used unicast polling method,

2 is a diagram illustrating an uplink allocation process for supporting a real-time polling service for two UEs,

FIG. 3 is a diagram schematically illustrating an uplink allocation procedure for supporting a real-time polling service,

4 is a block diagram illustrating an example of a terminal device structure.

Claims (15)

A method for a terminal to transmit a signal using a polling scheduling service, Receiving polling scheduling information including uplink valid period information allocated for polling of the UE from the BS and period information for transmitting a message requesting the bandwidth from the BS; Receiving modified polling scheduling information from the base station if at least one of the polling scheduling information is changed during a valid period based on the uplink valid period information; And And transmitting a bandwidth request message to the base station at predetermined intervals based on the changed polling scheduling information. The method according to claim 1, The polling scheduling information includes a time point at which the MS transmits a bandwidth request message or a time at which the MS transmits a bandwidth request message, and the MS transmits a message requesting bandwidth to the BS at the time point And transmitting the polling scheduling service. The method according to claim 1, Wherein the polling scheduling information further includes uplink resource area information allocated to the UE, Wherein the terminal transmits a message for requesting the bandwidth to the allocated uplink resource area. 3. The method of claim 2, Wherein the terminal transmits data using a resource area approved by the base station. 3. The method of claim 2, Wherein the viewpoints are set to any one of a subframe, a frame, a superframe, and a slot. delete The method according to claim 1, Wherein the message requesting bandwidth by the terminal includes at least one of a Flow IDentifier of the AT, a priority of the AT, and bandwidth size information. The method of claim 3, Wherein the uplink resource allocation information includes the number of allocated OFDMA symbols, the number of subchannels, the allocated OFDMA symbol offset, and the subchannel offset information. CLAIMS What is claimed is: 1. A method for transmitting a signal for a base station to provide a polling scheduling service, Transmitting polling scheduling information including uplink effective period information allocated for polling and period information for transmitting a message requesting a bandwidth to a mobile station; Transmitting the changed polling scheduling information to the UE when at least one of the polling scheduling information is changed during the valid period based on the uplink valid period information; And And receiving a message requesting the bandwidth from the terminal at predetermined intervals based on the changed polling scheduling information. 10. The method of claim 9, The polling scheduling information includes a time point at which the MS transmits a bandwidth request message or a time at which the MS transmits a bandwidth request message and receives a bandwidth request message from the MS Wherein the polling scheduling service is a polling scheduling service. 10. The method of claim 9, Wherein the polling scheduling information further includes uplink resource area information allocated to the UE, Wherein the terminal receives the bandwidth request message using the uplink resource allocated by the terminal. 11. The method of claim 10, Wherein the terminal receives data transmitted from the terminal using the resource region approved by the terminal. 11. The method of claim 10, Wherein the viewpoints are set to one of a subframe, a frame, a superframe, and a slot. delete 10. The method of claim 9, Wherein the message requesting bandwidth by the terminal includes at least one of a Flow IDentifier of the AT, a priority of the AT, and bandwidth size information. Way.

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