WO2011155778A2 - 무선 통신 시스템에서 mtc를 위한 통신 방법 및 장치 - Google Patents
무선 통신 시스템에서 mtc를 위한 통신 방법 및 장치 Download PDFInfo
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- WO2011155778A2 WO2011155778A2 PCT/KR2011/004232 KR2011004232W WO2011155778A2 WO 2011155778 A2 WO2011155778 A2 WO 2011155778A2 KR 2011004232 W KR2011004232 W KR 2011004232W WO 2011155778 A2 WO2011155778 A2 WO 2011155778A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/20—Transfer of user or subscriber data
Definitions
- the present invention relates to wireless communication, and more particularly, to a communication method and apparatus for machine type communication (MTC) in a wireless communication system.
- MTC machine type communication
- Machine Type Communication is a form of data communication that includes one or more entities that do not require user interaction.
- MTC refers to a concept in which a mechanical device communicates through a network, not a human terminal.
- MTC is also known as Machine To Machine (M2M) communication.
- M2M Machine To Machine
- MTC devices include vending machines, electricity meters, dam level measuring devices, and the like.
- HTC Human Type Communication
- the characteristics of the MTC device are different from those of the general HTC terminal.
- the number of MTC devices covered by the base station is much larger than the number of HTC terminals.
- the number of MTC devices can be hundreds to thousands of units.
- the amount of data transmitted by the MTC device and the amount of data received by the MTC device are smaller than the amount of data of the HTC terminal.
- the types of data to be transmitted and received are limited.
- a HTC terminal and a base station use a dedicated identifier to send and receive signaling.
- the dedicated identifier is an identifier used to identify the HTC terminal in the network.
- group identifiers are used to manage large numbers of MTC devices.
- the group identifier is an identifier used to identify an MTC group including a plurality of MTC devices.
- MTC devices may be provided with the same function or the same service.
- the same radio resource may be allocated to each MTC device, different radio resources may be allocated.
- the present invention provides a communication method and apparatus for MTC using a group identifier.
- a communication method for machine type communication (MTC) in a wireless communication system may further include: transmitting, by an MTC device, subscription information indicating an MTC subscriber to a base station, receiving, by the MTC device, a group identifier indicating an MTC group to which the MTC device belongs, from the base station; Receiving resource allocation information on a control channel based on the group identifier, and transmitting or receiving data by the MTC device based on the resource allocation information.
- MTC machine type communication
- the base station may allocate the MTC group based on the subscription information.
- the group identifier may be masked in a cyclic redundancy check (CRC) of the resource allocation information.
- CRC cyclic redundancy check
- the resource allocation information includes an index bitmap and a resource allocation bitmap, wherein the resource allocation bitmap includes resource allocation for at least one MTC device, and the index bitmap includes each resource allocation in the resource allocation bitmap. It may be a bitmap indicating an MTC device corresponding to the MTC device.
- the communication method may further include receiving, by the MTC device, allocation setting information from the base station, wherein the allocation setting information may include a bitmap index indicating an index of a corresponding MTC device in the index bitmap. .
- a wireless device for machine type communication (MTC) in a wireless communication system includes a radio frequency (RF) unit for transmitting and receiving a radio signal, and a processor connected to the RF unit, the processor transmitting subscription information indicating an MTC subscriber to a base station, and transmitting the MTC from the base station to the MTC.
- RF radio frequency
- a communication method for machine type communication (MTC) in a wireless communication system includes a base station receiving subscription information indicating an MTC subscriber to an MTC device, the base station transmitting a group identifier indicating an MTC group to which the MTC device belongs to the MTC device, and the base station transmitting the MTC device to the MTC device; Transmitting resource allocation information on a control channel using the group identifier.
- MTC machine type communication
- the same group identifier may be assigned to the MTC device for the same MTC subscriber.
- the radio resource may be allocated to the MTC device using the group identifier.
- 1 is an example of a communication scenario for MTC.
- FIG. 2 shows a frame structure in IEEE 802.16m.
- 3 shows an example of a procedure for configuring allocation A-MAP.
- FIG. 4 is a flowchart illustrating MTC communication according to an embodiment of the present invention.
- FIG. 6 is a block diagram illustrating a wireless communication system in which an embodiment of the present invention is implemented.
- Machine-Type Communication is a form of data communication that includes one or more entities that do not require human interaction.
- the MTC device refers to a wireless device used in the MTC, also referred to as a machine-to-machine (M2M) device.
- M2M machine-to-machine
- the MTC device is a wireless device that transmits or receives data through a wireless channel.
- An MTC subscriber is an entity having a contractual relationship with a network operator to provide services to one or more MTC devices.
- MTC group refers to a group of MTC devices that share one or more MTC characteristics and belong to the same MTC subscriber.
- 1 is an example of a communication scenario for MTC.
- a plurality of MTC devices 110 may be connected to the MTC server 160 through the network 150.
- the MTC server 160 receives the information of the MTC device 110 through the network 150 and provides the information to the MTC subscriber.
- the network 150 may be based on well-known radio access technology (RAT) such as GSM / EDGE Radio Access Network (GERAN), UMTS Terrestrial Radio Access Network (UTRAN), or Evolved-UTRAN (E-UTRAN).
- RAT radio access technology
- GSM / EDGE Radio Access Network GERAN
- UTRAN UMTS Terrestrial Radio Access Network
- E-UTRAN Evolved-UTRAN
- a base station (BS) is part of the network 150.
- the MTC server 160 may be directly connected to the network 150, but may also be connected to the network 150 through an Internet Protocol (IP).
- IP Internet Protocol
- UL Uplink
- DL Downlink
- Service characteristics in MTC can be divided into the following categories.
- the MTC device may transmit or receive data only in a predefined section. It may not be possible to access the network outside the predefined interval.
- the MTC device may postpone receipt or transmission of data. If there are not enough resources available, the network may limit the connection of the MTC device and dynamically limit the amount of data that the MTC device can transmit.
- the MTC device may send or receive a predefined amount of data.
- the MTC group includes a plurality of MTC devices belonging to the same MTC subscriber and is identified by the group identifier.
- Priority alarm message In case of theft, vandalism or other urgent attention, an MTC device that requires an alarm is used. Priority alarms may have precedence over any other category.
- IEEE 802.16m Air Interface for Broadband Wireless Access Systems
- FIG. 2 shows a frame structure in IEEE 802.16m.
- Each of the superframes SU0, SU1, SU2, and SU3 includes four frames F0, F1, F2, and F3.
- the length of the superframe is 20ms and the length of each frame is 5ms.
- One frame includes eight subframes SF0, SF1, SF2, SF3, SF4, SF5, SF6, SF7.
- Each subframe may be an uplink (UL) subframe or a downlink (DL) subframe.
- UL uplink
- DL downlink
- the number of subframes included in the frame may vary.
- One subframe includes a plurality of Orthogonal Frequency Division Multiple Access (OFDMA) symbols in the time domain and a plurality of subcarriers in the frequency domain.
- OFDMA Orthogonal Frequency Division Multiple Access
- one subframe includes 6 OFDMA symbols, but this is only an example.
- a type of a subframe may be defined according to the number of OFDMA symbols included in the subframe.
- the type-1 subframe may be defined to include 6 OFDMA symbols
- the type-2 subframe includes 7 OFDMA symbols
- the type-3 subframe includes 5 OFDMA symbols
- the type-4 subframe includes 9 OFDMA symbols.
- One frame may include subframes of the same type. Alternatively, one frame may include different types of subframes.
- IEEE 802.16m supports Time Division Duplex (TDD) mode and Frequency Division Duplex (FDD) mode.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- the UL subframe and the DL subframe are transmitted at different times at the same frequency.
- the FDD mode the UL subframe and the DL subframe may be transmitted at the same time at different frequencies.
- the Supreme Frame Header is transmitted in the first subframe of the first frame F0 of the super frame.
- the SFH may carry essential system parameters and system configuration information.
- SFH may include primary-SFH (P-SFH) and secondary-SFH (S-SFH).
- S-SFH can be divided into three subpackets (S-SFH SP1, S-SFH SP2, S-SFH SP3). Each subpacket may be transmitted periodically with a different period.
- S-SFH SP1 may be transmitted in the shortest period, and S-SFH SP3 may be transmitted in the longest period.
- S-SFH SP1 contains information about network re-entry.
- S-SFH SP2 includes information about initial network entry and network discovery.
- S-SFH SP3 contains the remaining important system information.
- PRU Physical Resource Unit
- Nsym may be determined according to the type of the subframe. For example, when one subframe consists of 6 OFDMA symbols, the value of Nsym is 6.
- Logical Resource Unit is a basic logical unit for distributed and continuous resource allocation.
- the DLRU may be used to obtain frequency diversity gain.
- the DLRU includes subcarrier groups distributed in one frequency partition.
- the minimum allocation unit constituting the UL DLRU is called a tile.
- the UL DLRU may include a subcarrier group from three tiles distributed.
- a tile may be defined with six subcarriers and Nsym OFDMA symbols.
- Contiguous Logical Resource Units may be used to obtain frequency selective scheduling gains.
- the CLRU includes contiguous subcarrier groups within locally allocated resources.
- the CLRU is composed of data subcarriers in a CRU (Contiguous Resource Unit).
- the size of the CRU is equal to the size of the PRU.
- A-MAP Advanced-MAP
- IE A-MAP Information Element
- A-MAPs include Non-user Specific A-MAPs, HARQ Feedback A-MAPs, Power Control A-MAPs, and Assignment A-MAPs.
- Non-user specific A-MAP carries information that is not restricted to a specific user.
- HARQ feedback A-MAP carries HARQ ACK / NACK information for UL transmission.
- Power control A-MAP carries a power control command to the terminal.
- Allocation A-MAP carries resource allocation information. UL assignment or DL assignment for a specific terminal is included in the assignment A-MAP IE.
- a 12-bit station identifier (STID) is used as a dedicated identifier for identifying a terminal in an area of a base station.
- the base station allocates the STID to the terminal during the network entry process.
- TSTID temporary STID
- 3 shows an example of a procedure for configuring allocation A-MAP.
- the information bits of the assigned A-MAP IE are masked by a sequence generated by a Pseudo Random Binary Sequence (PRBS) generator and randomized (310).
- PRBS Pseudo Random Binary Sequence
- a 16-bit cyclic redundancy check is added to the randomized bit sequence (320).
- CRC cyclic redundancy check
- a CRC mask is masked using a bitwise XOR operation.
- the CRC mask includes a 1-bit masking prefix, a 3-bit type indicator, and a 12-bit STID (or TSTID).
- STID or TSTID
- Masking transposition indicates whether the CRC mask.
- the type indicator indicates the presence or absence of a STID or TSTID.
- the sequence to which the CRC is added is encoded 330 by a tail-biting convolutional code (TBCC).
- TBCC tail-biting convolutional code
- the encoded bit sequence is modulated using quadrature phase-shift keying (QPSK) (340).
- QPSK quadrature phase-shift keying
- the modulated sequence is transmitted 350 through multiple-input multiple-output (MIMO) encoding.
- MIMO multiple-input multiple-output
- the existing IEEE 802.16m communication system is designed with focus on optimizing communication with HTC terminal.
- a group identifier is introduced for MTC which is used to identify a plurality of MTC devices.
- FIG. 4 is a flowchart illustrating MTC communication according to an embodiment of the present invention.
- the MTC device sends MTC capability and subscription information to the base station (S410).
- MTC capabilities and subscription information may be sent in one message or in a separate message.
- MTC capabilities include categories for whether MTC devices support MTC and / or supported services.
- the subscription information includes information for identifying the MTC subscriber (and / or MTC server) (eg, the identifier of the MTC subscriber).
- the subscription information may include a service (or function) to be provided by the MTC device.
- MTC capability and subscription information may be transmitted during network entry, network re-entry, or after network entry.
- the base station allocates the MTC group to the MTC device based on the subscription information (S420). For example, the base station may identify the MTC subscriber to which the MTC device is subscribed using the subscription information. The base station may assign the same MTC group to MTC devices belonging to the same MTC subscriber. As another example, using the subscription information, the base station may identify a service (or function) for the MTC device. The base station may allocate the same MTC group to MTC devices providing the same service (or function).
- the base station transmits the group identifier and / or assignment setting information to the MTC device (S430).
- the group identifier is used to identify the assigned MTC group.
- the allocation setting information may include common setting information necessary for all MTC devices in the MTC group to receive resource allocation information from the base station.
- the common configuration information may include a period for all MTC devices in the MTC group to receive resource allocation.
- the allocation configuration information may include dedicated configuration information required for each MTC device in the MTC group to receive dedicated resource allocation information from the base station. Since not all MTC devices in the MTC group use the same resource, resources may be allocated to each MTC device using dedicated configuration information.
- the base station may use the bitmap to allocate dedicated resources to each MTC device in the MTC group.
- the bitmap includes an index bitmap and a resource allocation bitmap.
- the resource allocation bitmap includes resource allocation for each MTC device, and the index bitmap is used to indicate a corresponding MTC device in the resource allocation bitmap.
- the dedicated setting information may include a bitmap size and / or a bitmap index.
- the bitmap size represents the size of the corresponding index bitmap.
- the bitmap index is an index of the corresponding MTC device in the index bitmap.
- the base station transmits resource allocation information to the MTC device (S450).
- Resource allocation information may be transmitted using the aforementioned A-MAP, and the CRC mask of the A-MAP may include a group identifier instead of the STID.
- the MTC device may de-mask the CRC of the A-MAP IE that has received the group identifier, and if the CRC error is not detected, it may confirm that the MTC device is the A-MAP for its MTC group.
- the resource allocation information may be DL resource allocation or UL resource allocation.
- the MTC device receives DL data or transmits UL data based on the resource allocation information (S460).
- the resource allocation information includes an index bitmap and a resource allocation bitmap.
- the index bitmap is a bitmap corresponding to the bitmap index in the resource allocation bitmap. For example, if the value of the bit corresponding to the bitmap index in the index bitmap is '1', resource allocation for the MTC device corresponding to the resource allocation bitmap is included. If the bit value is '0', the resource allocation bit is included. It is said that the resource allocation for the MTC device corresponding to the map is not included.
- the resource allocation information includes an index bitmap 510 and a resource allocation bitmap 520.
- the size of the index bitmap 510 is 8 bits, and the bitmap index of the MTC device is 3.
- Resource allocation information of each MTC device is 5 bits, and since there is resource allocation information for four MTC devices, the size of the resource allocation bitmap 520 is 20 bits.
- the MTC device first checks the value of the bit corresponding to its bitmap index from the index bitmap 510.
- the value of the bit of the third bit of the index bitmap 510 is '1'. Accordingly, the MTC device may know that its resource allocation is included in the resource allocation bitmap 520. Since the value of the first bit (ie, least significant bit) of the index bitmap 510 is also '1', the MTC device indicates that the second resource allocation 522 of the resource allocation bitmap 520 is its own resource allocation. You can check it.
- the size and value of the index bitmap and the size and value of the resource allocation bitmap are merely examples, and the technical spirit of the present invention is not limited thereto.
- the allocation setting information may include the number of MTC devices in the MTC group and the MTC index of the MTC devices in the MTC group.
- Resource allocation information may include an MTC index and a resource allocation corresponding to the MTC index.
- FIG. 6 is a block diagram illustrating a wireless communication system in which an embodiment of the present invention is implemented.
- the base station 50 includes a processor 51, a memory 52, and an RF unit 53.
- the memory 52 is connected to the processor 51 and stores various information for driving the processor 51.
- the RF unit 53 is connected to the processor 51 and transmits and / or receives a radio signal.
- the processor 51 implements the proposed functions, processes and / or methods. In the embodiment of FIG. 4, the operation of the base station may be implemented by the processor 51.
- the wireless device 60 includes a processor 61, a memory 62, and an RF unit 63.
- the memory 62 is connected to the processor 61 and stores various information for driving the processor 61.
- the RF unit 53 is connected to the processor 61 and transmits and / or receives a radio signal.
- the processor 61 implements the proposed functions, processes and / or methods. In the embodiment of FIG. 4, the operation of the MTC device may be implemented by the processor 61.
- the processor may include application-specific integrated circuits (ASICs), other chipsets, logic circuits, and / or data processing devices.
- the memory may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and / or other storage device.
- the RF unit may include a baseband circuit for processing a radio signal.
- the above-described technique may be implemented as a module (process, function, etc.) for performing the above-described function.
- the module may be stored in memory and executed by a processor.
- the memory may be internal or external to the processor and may be coupled to the processor by various well known means.
Abstract
Description
Claims (15)
- 무선 통신 시스템에서 MTC(Machine Type Communication)를 위한 통신 방법에 있어서,MTC 기기가 기지국으로 MTC 가입자를 가리키는 가입 정보를 전송하는 단계;상기 MTC 기기가 상기 기지국으로부터 상기 MTC 기기가 속하는 MTC 그룹을 가리키는 그룹 식별자를 수신하는 단계;상기 MTC 기기가 상기 기지국으로부터 상기 그룹 식별자를 기반으로 제어 채널 상으로 자원 할당 정보를 수신하는 단계; 및상기 MTC 기기가 상기 자원 할당 정보를 기반으로 데이터를 송신 또는 수신하는 단계를 포함하는 것을 특징으로 하는 통신 방법.
- 제 1 항에 있어서,상기 기지국은 상기 가입 정보를 기반으로 상기 MTC 그룹을 할당하는 것을 특징으로 하는 통신 방법.
- 제 1 항에 있어서,상기 자원 할당 정보의 CRC(cyclic redundancy check)에는 상기 그룹 식별자가 마스킹되는 것을 특징으로 하는 통신 방법.
- 제 3 항에 있어서,상기 자원 할당 정보는 인덱스 비트맵과 자원 할당 비트맵을 포함하되, 상기 자원 할당 비트맵은 적어도 하나의 MTC 기기에 대한 자원 할당을 포함하고, 상기 인덱스 비트맵은 상기 자원 할당 비트맵 내의 각 자원 할당에 대응하는 MTC 기기를 가리키는 비트맵인 것을 특징으로 하는 통신 방법.
- 제 4 항에 있어서,상기 MTC 기기가 상기 기지국으로부터 할당 설정 정보를 수신하는 단계를 더 포함하되, 상기 할당 설정 정보는 상기 인덱스 비트맵 내에서 해당되는 MTC 기기의 인덱스를 가리키는 비트맵 인덱스를 포함하는 것을 특징으로 하는 통신 방법.
- 제 5 항에 있어서,상기 할당 설정 정보는 상기 인덱스 비트맵의 크기를 나타내는 비트맵 크기를 더 포함하는 것을 특징으로 하는 통신 방법.
- 제 3 항에 있어서,상기 제어 채널은 A-MAP(Advanced-MAP) 인 것을 특징으로 하는 통신 방법.
- 무선 통신 시스템에서 MTC(Machine Type Communication)를 위한 무선 기기에 있어서,무선 신호를 송신 및 수신하는 RF(radio frequency)부; 및상기 RF 부와 연결되는 프로세서를 포함하되, 상기 프로세서는기지국으로 MTC 가입자를 가리키는 가입 정보를 전송하고;상기 기지국으로부터 상기 MTC 기기가 속하는 MTC 그룹을 가리키는 그룹 식별자를 수신하고;상기 기지국으로부터 상기 그룹 식별자를 기반으로 제어 채널 상으로 자원 할당 정보를 수신하고; 및상기 자원 할당 정보를 기반으로 데이터를 송신 또는 수신하는 것을 특징으로 하는 무선 기기.
- 제 8 항에 있어서,상기 자원 할당 정보는 인덱스 비트맵과 자원 할당 비트맵을 포함하되, 상기 자원 할당 비트맵은 적어도 하나의 무선 기기에 대한 자원 할당을 포함하고, 상기 인덱스 비트맵은 상기 자원 할당 비트맵 내의 각 자원 할당에 대응하는 무선 기기를 가리키는 비트맵인 것을 특징으로 하는 무선 기기.
- 제 9 항에 있어서,상기 프로세서는 상기 기지국으로부터 할당 설정 정보를 수신하고,상기 할당 설정 정보는 상기 인덱스 비트맵 내에서 해당되는 무선 기기의 인덱스를 가리키는 비트맵 인덱스를 포함하는 것을 특징으로 하는 무선 기기.
- 무선 통신 시스템에서 MTC(Machine Type Communication)를 위한 통신 방법에 있어서,기지국이 MTC 기기로 MTC 가입자를 가리키는 가입 정보를 수신하는 단계;상기 기지국이 상기 MTC 기기로 상기 MTC 기기가 속하는 MTC 그룹을 가리키는 그룹 식별자를 전송하는 단계; 및상기 기지국이 상기 MTC 기기로 상기 그룹 식별자를 이용하여 제어 채널 상으로 자원 할당 정보를 전송하는 단계를 포함하는 것을 특징으로 하는 통신 방법.
- 제 11 항에 있어서,상기 기지국이 상기 가입 정보를 기반으로 상기 MTC 그룹을 할당하는 단계를 더 포함하는 것을 특징으로 하는 통신 방법.
- 제 11 항에 있어서,상기 자원 할당 정보의 CRC(cyclic redundancy check)에는 상기 그룹 식별자가 마스킹되는 것을 특징으로 하는 통신 방법.
- 제 13 항에 있어서,상기 자원 할당 정보는 인덱스 비트맵과 자원 할당 비트맵을 포함하되, 상기 자원 할당 비트맵은 적어도 하나의 MTC 기기에 대한 자원 할당을 포함하고, 상기 인덱스 비트맵은 상기 자원 할당 비트맵 내의 각 자원 할당에 대응하는 MTC 기기를 가리키는 비트맵인 것을 특징으로 하는 통신 방법.
- 제 14 항에 있어서,상기 자원 할당 정보는 인덱스 비트맵과 자원 할당 비트맵을 포함하되, 상기 자원 할당 비트맵은 적어도 하나의 MTC 기기에 대한 자원 할당을 포함하고, 상기 인덱스 비트맵은 상기 자원 할당 비트맵 내의 각 자원 할당에 대응하는 MTC 기기를 가리키는 비트맵인 것을 특징으로 하는 통신 방법.
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KR1020127028029A KR101335782B1 (ko) | 2010-06-10 | 2011-06-09 | 무선 통신 시스템에서 mtc 를 위한 통신 방법 및 장치 |
US13/702,499 US20130077594A1 (en) | 2010-06-10 | 2011-06-09 | Communication method and communication apparatus for mtc in a wireless communication system |
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US61/357,973 | 2010-06-23 |
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Also Published As
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US20130077594A1 (en) | 2013-03-28 |
WO2011155778A3 (ko) | 2012-02-16 |
KR20130006673A (ko) | 2013-01-17 |
KR101335782B1 (ko) | 2013-12-02 |
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