KR102025727B1 - Method and apparatus for managing resource - Google Patents

Abstract

A resource management method of a base station is provided. The base station allocates resources to the terminal and generates a downlink control channel including information on the allocated resources and transmission time of the next downlink control channel. The base station then transmits a downlink control channel to the terminal.

Description

Resource management method and apparatus {METHOD AND APPARATUS FOR MANAGING RESOURCE}

The present invention relates to a resource management method and apparatus.

In a wireless communication system, a radio resource allocation method between a transmitting end and a receiving end, for example, a base station and a terminal, requires dynamic allocation and a dynamic allocation method for requesting and allocating a radio resource for transmitting a corresponding packet when there is data to be transmitted in a buffer. There is a permanent allocation method in which resources are allocated and used in a fixed manner.

The fixed allocation scheme can be applied mainly to services such as voice, for example, in which the traffic of the service has periodic characteristics. An advantage of the fixed allocation method is that since fixed radio resources are allocated and used periodically, it is not necessary to transmit allocation information for each allocation, thereby saving radio resources for broadcasting allocation information. In addition, when the receiving end is a terminal, since the periodic receiving time is known, information that can save power in a time interval excluding the receiving time can be provided. On the other hand, the dynamic allocation method is a method of maximizing resource utilization by providing a radio resource dynamically by determining allocation order and allocation amount according to a scheduling algorithm used by the scheduler without any limitation on allocation time.

In the fixed allocation method, holes of radio resources may occur due to periodic allocation and release of fixed resources, and resource utilization may decrease as the size of a resource allocated once is large. In other words, the fixed allocation method is not a method in which packets are dynamically divided and transmitted according to the size of a resource. However, if there is periodicity such as multicast-based push-to-talk (PTT) service or traffic of group communication, but the size of allocated radio resource is relatively large, fixed allocation reduces system capacity. In addition, the dynamic allocation method may not be an appropriate allocation method for power saving of the terminal.

Republic of Korea Patent Publication No. 10-2011-0063276

An object of the present invention is to provide a resource management method and apparatus that can support a power saving mode of a terminal and can efficiently use radio resources.

According to one aspect of the present invention, there is provided a resource management method of a base station. The resource management method may include: allocating a resource to a terminal, generating a downlink control channel including information on the allocated resource and a transmission time of a next downlink control channel, and generating the downlink control channel to the terminal. Transmitting.

The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. It can include an index.

In this case, the next allocated frame interval may have a value indicating a frame interval between a frame in which the downlink control channel is transmitted and a frame in which the next downlink control channel is transmitted.

In addition, when the next allocation frame interval has a value corresponding to "0", the next allocation subframe index may indicate a subframe index within a frame in which the downlink control channel is transmitted.

In addition, when the next allocation frame interval has a first predetermined value and the next allocation subframe index has a second predetermined value, the transmission time of the next downlink control channel may not be defined.

The downlink control channel may further include a resource allocation flag for indicating that the downlink control channel allocates a data burst.

The terminal may belong to a multicast group consisting of a plurality of terminals. In this case, the resource management method may further include masking a CRC of the downlink control channel with a CRC mask including an identifier of the multicast group, and attaching the masked CRC to the downlink control channel. can do.

According to another feature of the present invention, a resource management method of a terminal is provided. The resource management method may include receiving, from a base station, a downlink control channel including information on allocated resources and a transmission time of a next downlink control channel, identifying the allocated resource through the downlink control channel. And identifying a transmission time of the next downlink control channel through the downlink control channel.

The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. It can include an index.

In this case, the next allocated frame interval may have a value indicating a frame interval between a frame in which the downlink control channel is transmitted and a frame in which the next downlink control channel is transmitted.

In addition, when the next allocation frame interval has a value corresponding to "0", the next allocation subframe index may indicate a subframe index within a frame in which the downlink control channel is transmitted.

In addition, when the next allocation frame interval has a first predetermined value and the next allocation subframe index has a second predetermined value, the transmission time of the next downlink control channel may not be defined.

The downlink control channel may further include a resource allocation flag for indicating that the downlink control channel allocates a data burst.

The terminal may belong to a multicast group consisting of a plurality of terminals. In this case, the downlink control channel may include a CRC masked with a CRC mask including an identifier of the multicast group.

According to another feature of the present invention, a resource management device including a resource management unit and a transmission unit is provided. The resource manager allocates a resource to a terminal, generates a downlink control channel including information on the allocated resource and a transmission time of a next downlink control channel, and the transmitter transmits the downlink control channel to the terminal. .

The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. It can include an index.

In this case, the next allocated frame interval may have a value indicating a frame interval between a frame in which the downlink control channel is transmitted and a frame in which the next downlink control channel is transmitted.

According to another feature of the invention, there is provided a resource management device including a receiver and a control unit. The receiving unit receives a downlink control channel including information of allocated resources and transmission time of a next downlink control channel from a base station, and the control unit receives the allocated resource and the next downlink through the downlink control channel. Identifies the transmission time of the link control channel.

The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. It can include an index.

In this case, the next allocated frame interval may have a value indicating a frame interval between a frame in which the downlink control channel is transmitted and a frame in which the next downlink control channel is transmitted.

According to an embodiment of the present invention, it is possible to support the power saving mode of the terminal, it is also possible to efficiently use the radio resources.

1 is a diagram illustrating a multicast communication system according to an embodiment of the present invention.
2 is a diagram illustrating a multicast communication system according to another embodiment of the present invention.
3 is a diagram illustrating a multicast communication system according to another embodiment of the present invention.
4 is a diagram illustrating a multicast connection establishment method according to an embodiment of the present invention.
5 is a flowchart of a resource management method according to an embodiment of the present invention.
6 is a diagram illustrating an example of a resource management method according to an embodiment of the present invention.
7 and 8 are block diagrams of a resource management apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, a terminal may be a mobile terminal (MT), a mobile station (MS), an advanced mobile station (AMS), a high reliability mobile station (HR-MS). May also refer to a subscriber station (SS), a portable subscriber station (PSS), an access terminal (AT), a user equipment (UE), and the like. It may also include all or part of the functionality of the HR-MS, SS, PSS, AT, UE and the like.

In addition, a base station (BS) may be an advanced base station (ABS), a high reliability base station (HR-BS), a node B (node B), an advanced node B (evolved node B, eNodeB), access point (AP), radio access station (RAS), base transceiver station (BTS), mobile multihop relay (MMR) -BS, relay serving as a base station station (RS), relay node (RN) serving as base station, advanced relay station (ARS) serving as base station, high reliability relay station (HR) serving as base station -RS), small base stations (femoto BS), home node B (HNB), home eNodeB (HeNB), pico base station (pico BS), metro base station (metro BS), micro base station (micro BS) ), Etc.), and all, such as ABS, Node B, eNodeB, AP, RAS, BTS, MMR-BS, RS, RN, ARS, HR-RS, small base station, or the like. It may include a negative feature.

1 is a diagram illustrating a multicast communication system according to an embodiment of the present invention.

Referring to FIG. 1, the base station 110 assigns a multicast group identifier (ID) assigned to the multicast group 120 to provide multicast communication to a multicast group 120 including a plurality of terminals. Use The multicast group ID is uniquely assigned and has a finite size in the base station 110, and is used as an identifier informing the corresponding multicast group of the allocated resource. Different multicast groups 120, 130, and 140 have different multicast group IDs (MGID_A, MGID_B, MGID_C).

The base station 110 uses a flow identifier (FID) to distinguish a connection separately from the multicast group ID. The base station 110 may assign a FID to each multicast group ID to uniquely identify a connection, that is, a service flow, within the multicast group. Since the FID is an identifier for identifying a signal or traffic connection within the multicast group, the specific connection of the multicast group may be identified within the base station 110 by a combination of the multicast group ID and the FID. That is, the base station 110 uses the multicast group ID and the FID to provide a multicast service to the multicast group 120. In this case, the same FID (FID0 or FID1) may be used in different multicast groups 120, 130, and 140.

2 is a diagram illustrating a multicast communication system according to another embodiment of the present invention.

Referring to FIG. 2, the base station 210 provides a multicast service to a multicast group 220 including a plurality of terminals using a multicast group ID. At this time, the multicast group ID is uniquely assigned and has a finite size to identify a connection of the multicast group, that is, a service flow. Such a multicast group ID may have a size larger than the multicast group ID described in FIG. 1 for identifying the service flow as well as the multicast group. For example, the multicast group ID of FIG. 1 may be 12 bits, and the multicast group ID of FIG. 2 may be 16 bits.

Different multicast group IDs MGID0, MGID1, MGID2, MGID3, MGID4, and MGID5 are used in different multicast groups 220, 230, and 240. In addition, the multicast resource allocated to the multicast service may inform the multicast group through the multicast group ID.

3 is a diagram illustrating a multicast communication system according to another embodiment of the present invention.

Referring to FIG. 3, in a group communication system according to an embodiment of the present invention, a multicast group zone is defined by a base station set including at least one base station, and a multicast group zone is unique to the multicast group zone. ID is assigned. A multicast group ID having a unique value in the multicast group zone is assigned to the multicast group, and the multicast service can be identified through the FID in the multicast group. That is, the multicast service serviced in the multicast group zone can be identified through the multicast group ID and the FID. Alternatively, a multicast group ID having a unique value in the multicast group zone may be assigned to the multicast group, and the multicast group ID may identify a multicast service served in the multicast group zone.

Also in the multicast group zone, the base station set uses the same multicast group ID and the FID or the same multicast group ID to transmit data of any service flow. Accordingly, if the terminal has already registered with the base station for the multicast service, even if the terminal moves to another base station in the same multicast group zone, the multicast service may be continuously provided without registration with other base stations. When the terminal moves to a base station cell providing the same multicast service in another multicast group zone, the terminal may continue to receive the multicast service by updating a parameter related to the multicast service.

When a multicast group zone is defined as a single base station, a single base station may use a multicast group ID for providing a multicast service independently of other base stations.

4 is a diagram illustrating a multicast connection establishment method according to an embodiment of the present invention.

Referring to FIG. 4, the terminal 41 transmits a registration request (REG-REQ) message, and the base station 42 responds to a registration response (REG-RSP) message in response to the REG-REQ message. It transmits to the terminal 41 (S410). As such, the terminal informs the base station 42 that the multicast transmission is supported through the REG-REQ message to discover the multicast service, and the base station 42 transmits the corresponding terminal 41 through the REG-RSP message. ).

When the terminal 41 registers for reception of a multicast service, either node of the terminal 41 and the base station 42 starts a dynamic service addition (DSA) procedure for the multicast connection ( S420). One node of the terminal 41 and the base station 42 transmits a DSA-REQ message to another node and receives a DSA-RSP message from another node, thereby establishing a multicast connection.

At this time, the DSA-REQ and DSA-RSP messages include multicast parameters related to the multicast service. The multicast parameter contains the multicast group ID of the multicast group to which the service flow is added. The multicast parameter may further include an FID associated with the multicast group ID.

In addition, when the multicast group zone is supported, the multicast parameter may further include a multicast group zone ID for which the corresponding service flow is valid. Through the multicast parameter, the terminal 41 may add a service flow for initiating a multiservice. Alternatively, the base station may periodically broadcast the multicast group zone ID through a broadcast message. If the multicast group zones are separated without overlapping locally (i.e., if the base station belongs to only one multicast group zone or if no multicast group zone is defined), then the multiplication of DSA-REQ and DSA-RSP messages can be made. The cast parameter may not include the multicast group zone ID.

The terminal 41 and the base station 42 may perform the multicast service capability exchange performed in the REQ-REQ / RSP exchange procedure (S410) in the DSA-REQ / RSP exchange procedure (S420).

After setting the service flow in this way, the terminal 41 receives the downlink control channel including the multicast resource allocation information from the base station 42 (S430), and multicasts from the base station 42 through the allocated resources. A data burst is received (S440).

If the service flow needs to be changed during the multicast service, the terminal 41 and the base station 42 may perform a dynamic service change (DSC) procedure. That is, when either node of the terminal 41 and the base station 42 transmits a DSC-REQ message, the other node responds with a DSC-RSP message. At this time, the DSC-REQ message and the DSC-RSP message also include multicast parameters. The multicast parameters may include old multicast group IDs and new multicast group IDs, or may include old multicast group IDs and FIDs and new multicast group IDs and FIDs. In addition, the multicast parameter may further include a new multicast group zone ID.

When the multicast service is terminated, the terminal 41 and the base station 42 may delete the corresponding service flow by performing a dynamic service delete (DSD) procedure. In this case, the multicast group may be terminated in the multicast group by using the multicast group ID in the DSD procedure. In addition, the multicast service itself may be terminated at the base station by using the multicast group zone ID in the DSD procedure. When one node of the terminal 41 and the base station 42 transmits a DSD-REQ message, the other node responds with a DSD-RSP message.

As described above, according to an embodiment of the present invention, the terminal and the base station identify the multicast service supported by the multicast service capability exchange, and add a service flow for the multicast service through DSx (DSA, DSC, DSD procedures). Can be changed or deleted.

5 is a flowchart of a resource management method according to an embodiment of the present invention.

Referring to FIG. 5, the base station 52 allocates resources to the terminal 51 (S510), and transmits a downlink control channel including resource allocation information to the terminal 51 (S520). . The downlink control channel may be an information element (IE) of the map MAP. In this case, for resource allocation, a new type of MAP IE, for example a high reliability (Multi-Link) downlink MAP IE or a new type of advanced MAP (A-MAP), HR-Multicast DL Assignment A-MAP IE can also be defined. When the terminal 51 belongs to a multicast group, the base station 52 may allocate the same multicast resource to a plurality of terminals belonging to the multicast group.

Meanwhile, the base station 52 informs the transmission time of the next downlink control channel together with the resource allocation information when transmitting the downlink control channel. The base station 52 may inform the frame in which the next downlink control channel is transmitted and the subframe in which the next downlink control channel is transmitted in the frame in order to inform the transmission time of the next downlink control channel. To this end, the downlink control channel may include a next allocation frame interval and a next allocation subframe index, as shown in Table 1.

Information Explanation Next allocated frame interval Next transmission allocation interval of downlink control channel Next allocation subframe index Subframe index at next allocation frame Resource allocation flags Indicates whether the current downlink control channel allocates a data burst

The next allocation frame interval may indicate a frame in which a next downlink control channel is transmitted, and may have a value indicating a frame interval between a current frame and a frame in which the next downlink control channel is transmitted. For example, the next allocated frame interval has 3 bits, "0b000" is the current frame, "0b001" is 1 frame later, "0b010" is 2 frames later, "0b011" is 3 frames later, "0b100" is 4 After the frame, "0b101" may indicate eight frames or more. The next allocation subframe index indicates a subframe in which the downlink control channel is transmitted in a frame indicated by the next allocation frame interval. For example, the next allocated subframe index has 3 bits, the value of which corresponds to the subframe index.

This next allocated frame interval may be utilized for the UE to operate in a power saving mode. That is, since the UE knows the transmission time of the next downlink control channel, it may receive the next downlink control channel if necessary even in the power saving mode.

When periodicity exists in traffic generation, such as a voice service, the next allocated frame interval may be determined according to the traffic generation period. In addition, the allocation period may be variably set for efficient operation of radio resources.

When the next allocation frame interval has a value of "0b000", that is, the next downlink control channel is transmitted in the current frame, the next allocation subframe index indicates the subframe index in the current frame.

When both the next allocation frame interval and the next allocation subframe index have a value of "0b000", it indicates that the downlink control channel does not indicate the time when the next downlink control channel is transmitted. That is, the downlink control channel does not indicate the next resource allocation time, which may mean a state in which transmission on the connection is stopped for a predetermined time. In this case, the base station may transmit a downlink control channel to start transmission again. In this case, when there is a terminal in a power saving mode such as a sleep mode or a sleep mode, the downlink control channel may be transmitted even in a listening interval of the power saving mode.

Meanwhile, as shown in Table 1, the downlink control channel may further include a resource allocation flag. The resource allocation flag indicates whether the corresponding downlink control channel includes burst allocation information. For example, the resource allocation flag may have 1 bit, "0b0" may indicate that there is no allocation of data bursts, and "0b1" may indicate that there is allocation of data bursts.

The terminal 51 identifies whether the corresponding MAP IE is a MAP IE corresponding to a multicast group to which it belongs based on the received MAP IE (S530). The terminal 51 confirms the allocated resource through the identified resource allocation information of the MAP IE, and also checks the time point at which the next resource allocation information is transmitted (S540). Thereafter, the terminal 51 receives a data burst through the allocated resources (S550).

6 is a diagram illustrating an example of a resource management method according to an embodiment of the present invention.

As shown in FIG. 6, the base station allocates a multicast resource to a multicast group, and transmits a downlink control channel including resource allocation information, that is, a MAP IE. It also sends multicast bursts to allocated resources. At this time, the MAP IE includes a next allocation frame interval and a next allocation subframe index.

In the example of FIG. 6, the first MAP IE has "0b100" as the next allocation frame interval, "0b001" as the next allocation subframe index, and "0b1" as the resource allocation flag. Therefore, the multicast burst is transmitted at the position corresponding to the resource allocation information of the first MAP IE, and the second MAP IE is transmitted in the subframe having the index 1 among the frames after the fourth frame from the first frame. The second MAP IE has "0b000" as the next allocation frame interval, "0b011" as the next allocation subframe index, and "0b1" as the resource allocation flag. Then, the multicast burst is transmitted at the position corresponding to the resource allocation information of the second MAP IE, and the third MAP IE is transmitted in the subframe having the index 3 among the same frames as the second MAP IE. The third MAP IE has "0b101" as the next allocation frame interval, "0b011" as the next allocation subframe index, and "0b0" as the resource allocation flag. Then, the fourth MAP IE is transmitted in the subframe having the index 3 among the frames after the eighth frame from the frame in which the third MAP IE is transmitted. And since the resource allocation flag of the third MAP IE is "0b0", the multicast burst is not transmitted.

As such, according to an embodiment of the present invention, the base station can freely set allocation resources for burst transmission at variable positions and variable transmission levels for each allocation. The transmission level may be a modulation and coding scheme (MCS) level. In addition, as shown in the example of FIG. 6, when the size of a resource in a subframe is small to transmit one voice packet, the base station may split the voice packet into a plurality of packets 2 and 2 ′ and transmit the same. . The remaining divided packet 2 'can be transmitted in the next valid subframe, and the resource allocation period can be set equal to the voice period. Accordingly, resources can be efficiently managed.

Next, an example of a downlink control channel according to an embodiment of the present invention will be described with reference to Table 2.

The base station may define a multicast assignment A-MAP IE to allocate multicast resources using A-MAP, and the multicast assignment A-MAP IE may be, for example, an HR-Multicast DL Assignment A-MAP IE. Can be.

Multicast Allocation The A-MAP IE includes the next allocation frame interval, next allocation subframe index, resource allocation flag and multicast allocation information as described above. The multicast allocation information may include a resource index indicating the location and size of the multicast resource. The multicast allocation information may further include information (Isizeoffset) used to calculate a burst size index and a long TTI indicator indicating the number of subframes to which the allocated resource is spanned.

The base station generates a 16-bit cyclic redundancy check (CRC) based on a randomized sequence of information bits of the multicast allocation A-MAP IE, and masks the 16-bit CRC with a CRC mask including a multicast group ID. The masked CRC may be attached to the multicast assignment A-MAP IE. Then, the terminal can identify the multicast allocation A-MAP IE by the CRC mask including the multicast group ID to which the terminal belongs. That is, the terminal may identify the multicast assignment A-MAP IE corresponding to the multicast group to which it belongs using the CRC mask.

Field Size (bits) Value / Description HR-Multicast_DL_Assignment_A-MAP_IE () { A-MAP IE Type 4 HR-Multicast DL Assignment A-MAP IE Next Allocation Frame Interval 3 Next transmission allocation interval of multicast DL assignment A-MAP IE.
If (Next Allocation Frame Interval == 0b000) and (Next Allocation subframe Index == 0b000), it indicates that the Multicast DL assignment A-MAP IE dose not express the transmission time of next Multicast DL assignment A-MAP IE.
0b000: current frame
0b001: 1 frame
0b010: 2 frames
0b011: 3 frames
0b100: 4 frames
0b101: 8 frames
0b110-0b111: reserved Next Allocation Subframe Index 3 Subframe index in the next allocation frame.
When the Next Allocation Frame Interval == 0b000 and Resource allocation flag == 0b1 (the current frame is allocated), the Next Allocation Subframe Index shall be one of the subsequent subframes in this frame. Resource allocation flag One It indicates whether the current Multicast DL Assignment A-MAP IE allocates a Multicast Data Burst or not.
0b0: not included
0b1: included If (Resource allocation flag == 0b1) { Isizeoffset 5 Offset used to compute burst size index MEF 2 MIMO encoder format

0b00: SFBC
0b01: Vertical encoding
0b10: Multi-layer encoding
0b11: CDR If (MEF == 0b01) { Parameter for vertical encoding M _t 3 Number of streams in transmission M _t <= N _t
N _t : Number of transmit antennas at the HR-BS

0b000: 1 stream
0b001: 2streams
0b010: 3streams
0b011: 4streams
0b100: 5streams
0b101: 6streams
0b110: 7streams
0b111: 8streams Reserved One } else if (MEF == 0b10) { Parameters for multi-layer encoding Si 4 Index to identify the combination of the number of streams and the allocated pilot stream index in a transmission with MU-MIMO, and the modulation constellation of paired user in the case of 2 stream transmission

0b0000: 2 streams with PSI = stream1 and other modulation = QPSK
0b0001: 2 streams with PSI = stream1 and other modulation = 16QAM
0b0010: 2 streams with PSI = stream1 and other modulation = 64QAM
0b0011: 2 streams with PSI = stream1 and other modulation information not available
0b0100: 2 streams with PSI = stream2 and other modulation = QPSK
0b0101: 2 streams with PSI = stream2 and other modulation = 16QAM
0b0110: 2 streams with PSI = stream2 and other modulation = 64QAM
0b0111: 2 streams with PSI = stream2 and other modulation information not available
0b1000: 3 streams with PSI = stream1
0b1001: 3 streams with PSI = stream2
0b1010: 3 streams with PSI = stream3
0b1011: 4 streams with PSI = stream1
0b1100: 4 streams with PSI = stream2
0b1101: 4 streams with PSI = stream3
0b1110: 4 streams with PSI = stream4
0b1111: n / a } 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
Resource index includes location and allocation size. Long TTI Indicator One Indicates number for AAI subframes spanned by the allocated resource.
0b0: 1 AAI subframe (default TTI)
0b1: 4 DL AAI subframe for FDD or all DL AAI subframes for TDD (long TTI) Reserved 6 } }

Fields not described in Table 2 are defined, for example, in the IEEE Std 802.16.1-2012 standard and so on, and thus description thereof is omitted.

Next, a resource management apparatus for performing a resource management method according to an embodiment of the present invention will be described with reference to FIGS. 7 and 8.

7 and 8 are block diagrams of a resource management apparatus according to an embodiment of the present invention.

Referring to FIG. 7, the resource management apparatus 700 includes a resource manager 710 and a transmitter 720.

The resource manager 710 allocates a resource to the terminal and generates a MAP IE including resource allocation information, next allocation frame interval, next allocation subframe index, and resource allocation flag. The transmitter 720 transmits the MAP IE to the terminal.

The resource management apparatus 700 may be included in or be a base station.

Next, a resource management apparatus for receiving resource allocation information according to an embodiment of the present invention will be described with reference to FIG. 8.

Referring to FIG. 8, the resource management apparatus 800 includes a receiver 810 and a controller 820.

The receiver 810 receives the MAP IE transmitted from the base station. At this time, the MAP IE includes a next allocation frame interval, a next allocation subframe index, a resource allocation flag, and allocation information of resources allocated to the terminal. When the MAP IE is a MAP IE corresponding to a multicast group to which the UE belongs, the controller 820 identifies whether the MAP IE corresponds to a multicast group to which it belongs by using a multicast group ID or a CRC mask, and identifies Identifies the resources allocated through the MAP IE and the transmission time of the next MAP IE.

The resource management device 800 may be included in the terminal or may be a terminal.

At least some functions of the resource management method and apparatus according to the embodiment of the present invention described above may be implemented in hardware or software coupled to the hardware. For example, a processor implemented as a central processing unit (CPU) or other chipset, microprocessor, or the like performs the function of the resource manager 710 or the controller 820, and the transceiver is a transmitter 720. ) May perform the function of the receiver 810.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (20)

delete delete delete As a resource management method of a base station,
Allocating resources to the terminal;
Generating a downlink control channel including information on allocated resources and a transmission time of a next downlink control channel; and
Transmitting the downlink control channel to the terminal;
The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. Contains the index,
The next allocated frame interval has a value indicating a frame interval between a frame in which the downlink control channel is transmitted and a frame in which the next downlink control channel is transmitted.
And the next allocation subframe index indicates a subframe index within a frame in which the downlink control channel is transmitted when the next allocation frame interval has a value corresponding to "0". As a resource management method of a base station,
Allocating resources to the terminal;
Generating a downlink control channel including information on allocated resources and a transmission time of a next downlink control channel; and
Transmitting the downlink control channel to the terminal;
The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. Contains the index,
When the next allocation frame interval has a first predetermined value and the next allocation subframe index has a second predetermined value, the transmission time of the next downlink control channel is not defined. In claim 5,
The downlink control channel further includes a resource allocation flag for indicating that the downlink control channel allocates a data burst. In claim 5,
The terminal belongs to a multicast group consisting of a plurality of terminals,
The resource management method,
Masking the CRC of the downlink control channel with a CRC mask including an identifier of the multicast group, and
Attaching the masked CRC to the downlink control channel
Resource management method further comprising. delete delete delete As a resource management method of a terminal,
Receiving, from the base station, a downlink control channel including information of allocated resources and a transmission time of a next downlink control channel,
Identifying the allocated resource via the downlink control channel, and
Identifying a transmission time of the next downlink control channel through the downlink control channel,
The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. Contains the index,
The next allocated frame interval has a value indicating a frame interval between a frame in which the downlink control channel is transmitted and a frame in which the next downlink control channel is transmitted.
And the next allocation subframe index indicates a subframe index within a frame in which the downlink control channel is transmitted when the next allocation frame interval has a value corresponding to "0". As a resource management method of a terminal,
Receiving, from the base station, a downlink control channel including information of allocated resources and a transmission time of a next downlink control channel,
Identifying the allocated resource via the downlink control channel, and
Identifying a transmission time of the next downlink control channel through the downlink control channel,
The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. Contains the index,
When the next allocation frame interval has a first predetermined value and the next allocation subframe index has a second predetermined value, the transmission time of the next downlink control channel is not defined. In claim 12,
The downlink control channel further includes a resource allocation flag for indicating that the downlink control channel allocates a data burst. In claim 12,
The terminal belongs to a multicast group consisting of a plurality of terminals,
The downlink control channel includes a cyclic redundancy check (CRC) masked with a CRC mask including an identifier of the multicast group.
Resource management method. A resource management unit for allocating a resource to a terminal and generating a downlink control channel including information on the allocated resource and a transmission time of a next downlink control channel; and
It includes a transmitter for transmitting the downlink control channel to the terminal,
The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. Contains the index,
When the next allocation frame interval has a first predetermined value and the next allocation subframe index has a second predetermined value, the transmission time of the next downlink control channel is not defined.
Resource management device. delete delete A receiving unit which receives from the base station a downlink control channel including information of allocated resources and transmission time of the next downlink control channel, and
A control unit for identifying a transmission time of the allocated resource and the next downlink control channel through the downlink control channel,
The transmission time of the next downlink control channel is a next allocation subframe indicating a next allocation frame interval indicating a frame in which the next downlink control channel is transmitted and a subframe in which the next downlink control channel is transmitted in the frame. Contains the index,
When the next allocation frame interval has a first predetermined value and the next allocation subframe index has a second predetermined value, the transmission time of the next downlink control channel is not defined.
Resource management device. delete delete

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