WO2012077977A2 - M2m 통신을 위한 아이들 모드에서 동작 방법 및 이를 이용한 장치 - Google Patents
M2m 통신을 위한 아이들 모드에서 동작 방법 및 이를 이용한 장치 Download PDFInfo
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- WO2012077977A2 WO2012077977A2 PCT/KR2011/009434 KR2011009434W WO2012077977A2 WO 2012077977 A2 WO2012077977 A2 WO 2012077977A2 KR 2011009434 W KR2011009434 W KR 2011009434W WO 2012077977 A2 WO2012077977 A2 WO 2012077977A2
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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
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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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
- H04L5/0058—Allocation criteria
- H04L5/0069—Allocation based on distance or geographical location
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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
- 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
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to wireless communication, and more particularly, to a method of operating in an idle mode for M2M (Machine To Machine) communication and a device using the same in a wireless communication system.
- M2M Machine To Machine
- Machine-to-machine (M2M) communication (or machine type communication (MTC)) is a form of data communication that includes one or more entities that do not require human interaction. That is, M2M communication refers to a concept in which a mechanical device, not a terminal used by humans, communicates using an existing wireless communication network. Mechanical devices used for M2M communication may be referred to as M2M devices, and the M2M devices are various, such as vending machines and machines for measuring the water level of dams.
- M2M communications offers different market scenarios, data communications, low cost and effort, potentially a very large number of M2M devices, wide coverage area and low traffic per M2M device. It may be characterized as.
- the network reentry process is a process of recovering a terminal to a connected state with a network in an idle mode.
- the present invention provides an operating method and an apparatus using the same in the idle mode for M2M (Machine To Machine) communication.
- M2M Machine To Machine
- a method of operation in an idle mode for Machine To Machine (M2M) communication is provided.
- the method in the idle mode an M2M device receives a paging message from a base station, the paging message includes an action code, a connection type and a resource offset, wherein the action code indicates that the M2M device performs network reentry;
- the access type indicates a type for network reentry, the resource offset indicates a resource allocation for a ranging request, the resource offset indicates an offset for uplink allocation, and the M2M
- the device sending a ranging request message to the base station using the uplink allocation.
- the method may further include the M2M device receiving the uplink allocation based on the resource offset.
- the resource offset may indicate an offset at which the M2M device starts monitoring the uplink allocation.
- the paging message may further include a group identifier indicating a group to which the M2M device belongs.
- the M2M device may end the idle mode in response to receiving the paging message.
- an apparatus for machine to machine (M2M) communication includes a radio frequency (RF) unit for transmitting and receiving a radio signal, and a processor coupled to the RF unit, the processor operating in the idle mode.
- Receive a paging message from a base station wherein the paging message includes an action code, a connection type and a resource offset, the action code instructs the M2M device to perform network re-entry, and the connection type indicates the network re-entry.
- the access type indicates a resource allocation for a ranging request
- the resource offset indicates an offset for an uplink allocation, and uses the uplink allocation to the base station for the lane Send a request message.
- M2M machine to machine
- FIG. 2 shows an example of a frame structure of an IEEE 820.16m system.
- FIG 3 shows an operation transition diagram in IEEE 802.16m.
- FIG. 4 is a flowchart illustrating operation in an idle mode in IEEE 802.16m.
- FIG 5 illustrates operation in an idle mode according to an embodiment of the present invention.
- FIG. 6 shows an example of resource allocation of RNG-REQ using a paging message.
- FIG. 7 shows an example of resource allocation of RNG-REQ using ranging allocation A-MAP.
- FIG. 8 is a block diagram illustrating a wireless communication system in which an embodiment of the present invention is implemented.
- M2M machine to machine
- M2M communication also referred to as MTC (Machine Type Communication) exchanges information between the M2M devices 11 and 12 through the base station 15 without human interaction or with the M2M device 11 through the base station.
- the M2M server 18 is an entity that communicates with the M2M device 11.
- the M2M server executes an M2M application and provides an M2M specific service to the M2M device 11.
- the M2M device 11 is a wireless device that provides M2M communication and may be fixed or mobile. M2M devices are also called MTC devices.
- Services provided through M2M communication are different from those in existing human-involved communication, and various categories of services such as tracking, metering, payment, medical service, and remote control Is present.
- Time controlled characteristic This means that the M2M device transmits or receives data only in a predetermined specific interval. Therefore, unnecessary signaling outside a predetermined specific section can be prevented.
- Time Tolerant Characteristics This means that M2M devices can delay data delivery.
- the network operator restricts the connection of the M2M device to the network or the transmission of data to another MTC device when the load of the network is greater than the predetermined load threshold, and the data of the data that the MTC device can deliver in a specific area. You can dynamically limit the amount.
- Offline indication characteristic This is a requirement to notify the M2M device in a timely manner when signaling between the M2M device and the network is no longer possible.
- PAM Priority Alarm Message
- the base station may allocate the same STID to the plurality of M2M devices.
- M2M Group Identifier An identifier used to uniquely identify an M2M device group in the area of a network entity that allocates an MGID.
- the wireless communication system to which the present invention is applied is not limited to the IEEE 802.16m based system, but may be applied to various wireless communication systems such as 3GPP (3rd Generation Partnership Project) long term evolution (LTE).
- 3GPP 3rd Generation Partnership Project
- LTE long term evolution
- FIG. 2 shows an example of a frame structure of an IEEE 820.16m system.
- a superframe includes a superframe header (SFH) and four frames (frames, F0, F1, F2, and F3). Each frame in the superframe may have the same length.
- the size of the superframe is 20ms and the size of each frame is 5ms.
- the frame includes a plurality of subframes (subframe, SF0, SF1, SF2, SF3, SF4, SF5, SF6, SF7).
- the subframe may be used for uplink transmission or downlink transmission.
- the subframe includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols in the time domain.
- the OFDM symbol is for representing one symbol period, and the name of the OFDM symbol is not limited to the multiple access scheme.
- the subframe includes six OFDM symbols. This is merely an example, and the subframe may include 5, 7, or 9 OFDM symbols, but is not limited thereto.
- 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. have.
- a time division duplex (TDD) scheme or a frequency division duplex (FDD) scheme may be applied to the frame.
- Subframes in the TDD frame may be divided into an uplink subframe and a downlink subframe.
- the size of the superframe, the number of frames included in the superframe, the number of subframes included in the frame, and the number of OFDM symbols in the subframe may be changed, but the present invention is not limited thereto.
- the SFH may carry essential system parameters and system configuration information.
- the SFH may be transmitted in the last five OFDM symbols of the first subframe in the superframe.
- a physical resource unit is a basic resource allocation unit and includes 18 subcarriers in consecutive OFDM symbols of the same subframe.
- A-MAP Advanced-MAP
- Non-user specific A-MAP carries information that is not specific to any particular user or group of users.
- Hybrid Automatic Repeat Request (HARQ) feedback A-MAP carries HARQ ACK / NACK information for uplink data transmission.
- the power control A-MAP carries power control commands to the mobile station (MS).
- Allocation A-MAP carries the resource allocation information.
- Allocation A-MAP includes several types such as DL (downlink) Basic Assignment (A-MAP), UL (uplink) Basic Allocation A-MAP, code division multiple access (CDMA) Allocation A-MAP, etc. .
- CDMA allocation A-MAP includes UL resource allocation according to bandwidth request or UL resource allocation according to ranging request.
- All A-MAPs share a physical resource region called an A-MAP region.
- the A-MAP region exists for each downlink subframe.
- FIG 3 shows an operation transition diagram in IEEE 802.16m.
- a mobile station receives synchronization and system settings to perform cell selection.
- Network entry is a procedure that includes ranging, basic capability negotiation and authentication with a base station.
- the mobile station In the connected state, the mobile station operates in one of a sleep mode, an active mode and a scanning mode. During the connected state, the mobile station maintains the established connection during the connected state. A mobile station in active mode can always transmit or receive scheduled data.
- a radio frame In the sleep mode, a radio frame is divided into a sleep window and a listening window. The mobile station in sleep mode may receive data from the base station during the listening window. The mobile station in scanning mode performs the measurements indicated by the base station.
- the mobile station In idle state, the mobile station operates in idle mode. In the idle mode, there is a paging available interval and a paging unavailable interval. The base station does not transmit any downlink traffic such as a paging message in the non-paging period.
- FIG. 4 is a flowchart illustrating operation in an idle mode in IEEE 802.16m.
- step S410 in the idle mode, the mobile station monitors the reception of the paging message during the pageable interval, and receives a paging advertisement (PAG-ADV) message.
- the paging message is a notification message indicating whether there is a pending downlink traffic to a specific mobile station.
- the base station may instruct each mobile station to perform ranging for network reentry or location update via a PAG-ADV message.
- step S420 if the PAG-ADV message requires network re-entry, the mobile station exits idle mode and sends a ranging code to the base station.
- step S430 in response to the ranging code, the mobile station receives a RNG-RSP (Ranging-Response) message from the base station.
- the RNG-RSP message includes a status code.
- the status code indicates one of 'continue', 'success' and 'abort'.
- the mobile station If the RNG-RSP message with status code 'Continue' is received, the mobile station sends a ranging code again.
- step S440 the mobile station receives an assignment A-MAP (A-MAP).
- the assignment A-MAP includes a CDMA assignment A-MAP.
- step S450 the mobile station sends an RNG-REQ (Ranging-Request) message to the base station using the UL resource allocation indicated by the CDMA allocation A-MAP.
- RNG-REQ Anging-Request
- step S460 the mobile station receives an RNG-RSP message in response to the RNG-REQ message.
- the mobile station In idle mode, the mobile station first sends a ranging code for network reentry.
- the ranging code is arbitrarily selected by the mobile station from a plurality of code sets, which is called contention based ranging.
- the mobile station has mobility, and thus, it is not possible to guarantee that the UL synchronization between the base station and the mobile station is maintained in the idle mode. Accordingly, the mobile station in the idle mode receiving the paging performs UL synchronization by first ranging for network re-entry.
- M2M devices have little mobility in M2M communication.
- the M2M2 device having a time control characteristic may maintain UL synchronization, so that no separate UL synchronization may be required.
- the M2M device and the base station negotiate the mobility or UL synchronization upon network reentry.
- the following is an operation for an M2M device having low mobility or UL synchronization.
- step S510 the M2M device enters an idle mode. Entry into the idle mode may be performed at the request of the M2M device or by a command from the base station.
- the M2M device In order to enter the idle mode by the M2M device, in step S511, the M2M device sends a DREG-REG (Deregistration-Request) message requesting entry into the idle mode. In step S512, the M2M device receives a DREG-RSP (Deregistration-Response) message indicating the start of the idle mode from the base station.
- DREG-REG Deregistration-Request
- DREG-RSP Deregistration-Response
- the base station may transmit a DREG-CMD (Deregistration-Command) message to command the M2M device to enter the idle mode.
- DREG-CMD Deregistration-Command
- step S520 in the idle mode, the M2M device monitors the reception of the paging message during the pageable interval, and receives the PAG-ADV message.
- the PAG-ADV message instructs the M2M device to perform network reentry.
- the proposed PAG-ADV message includes resource offset information on the allocation A-MAP carrying the resource allocation used for transmission of the RNG-REQ message.
- the M2M device Upon receiving the PAG-ADV message, the M2M device exits the idle mode and initiates a network re-entry process.
- the M2M device receives the assigned A-MAP based on the resource offset information in the PAG-ADV message.
- Assignment A-MAP includes UL assignment for transmission of RNG-REQ messages.
- the allocation A-MAP for the RNG-REQ may use the existing CDMA allocation A-MAP or may use the ranging allocation A-MAP for the M2M device.
- the dedicated identifier of the M2M device may be masked in the cyclic redundancy check (CRC) of the ranging allocation A-MAP.
- CRC cyclic redundancy check
- step S540 the M2M device sends an RNG-REQ message to the base station using the UL allocation in the assigned A-MAP.
- step S550 the M2M device receives the RNG-RSP message in response to the RNG-REQ message.
- field names, sizes, and field values are merely examples, and those skilled in the art may easily change them to other names and other values.
- Table 1 below shows examples of fields included in a PAG-ADV message according to an embodiment of the present invention.
- Explanation Action code One Indicates the purpose of the PAG-ADV message 0b0: Performs network re-entry 0b1: Performs ranging to update location Access type 3 Indicate type for network reentry.
- the action code is '0b0' 0b000: Channel assignment for RNG-REQ 0b001: Dedicated ranging channel assignment for S-RCH (synchronized ranging channel) 0b010: For non-synchronized ranging channel (NS-RCH) Dedicated Raising Channel Allocation 0b011-0b111: reserved Identifier Identifier pointing to M2M device Resource offset Offset indicating resource allocation for RNG-REQ.
- connection type is '0b000'.
- the resource offset indicates where the allocation A-MAP for the RNG-REQ message is sent.
- the resource offset may indicate a subframe offset at which the allocation A-MAP for the RNG-REQ message is transmitted.
- FIG. 6 shows an example of resource allocation of RNG-REQ using a paging message.
- the M2M device receives the resource offset of the PAG-ADV message 610 and receives the allocation A-MAP 620 based on the resource offset.
- the M2M device sends an RNG-REQ message 630 using the UL resource allocation in the allocation A-MAP 620.
- a MGID indicating a group of M2M devices may be included in a paging message.
- a resource offset may be specified for each M2M device in the group.
- Table 2 below shows examples of fields included in the PAG-ADV message using the MGID.
- the resource offset is not individually given to each M2M device, but may indicate a location at which the M2M device belonging to the corresponding M2M group monitors the allocation A-MAP.
- Table 3 shows another example of fields included in a PAG-ADV message using an MGID.
- the resource offset indicates where the M2M device starts to monitor the UL resource allocation.
- the M2M device checks whether the UL resource allocation is received at the point indicated by the resource offset (eg, a subframe). If an allocation A-MAP with UL resource allocation is received, the M2M device sends an RNG-REQ message using the UL resource allocation. If no allocation A-MAP with UL resource allocation is received, the M2M device does not perform the network re-entry process. That is, if an allocation A-MAP having UL resource allocation is not received, the corresponding M2M device is assumed not to be paged.
- the paging message may directly include resource allocation for RNG-REQ instead of resource offset.
- Table 4 shows an example of a PAG-ADV message including resource allocation.
- the action code is '0b0' 0b000: Channel assignment for RNG-REQ 0b001: Dedicated ranging channel assignment for S-RCH (synchronized ranging channel) 0b010: For non-synchronized ranging channel (NS-RCH) Dedicated Raising Channel Allocation 0b011-0b111: reserved Identifier Identifier pointing to M2M device Resource index Index indicating resource allocation for RNG-REQ.
- connection type is '0b000'.
- the resource index indicates UL resource allocation for the RNG-REQ
- the M2M device may transmit the RNG-REQ message using the UL resource allocation without receiving the A-MAP.
- Tables 1 to 4 described above can be applied without changing the structure of the existing allocation A-MAP.
- ranging allocation A-MAP ranging allocation A-MAP
- the ranging allocation A-MAP 720 includes UL resource allocation for a plurality of RNG-REQs.
- Resource offsets of Tables 1 to 3 may indicate offsets for ranging allocation A-MAP 720.
- the M2M devices receive the resource offset for the ranging allocation A-MAP 720 of the PAG-ADV message 710 and receive the ranging allocation A-MAP 720 based on the resource offset. Assume that the ranging allocation A-MAP 720 includes UL resource allocation for three RNG-REQs 731, 732, and 733. Each M2M device sends a corresponding RNG-REQ message.
- M2M devices having the same value by "MGID modulo N" may receive the same allocation A-MAP.
- the N value may be given in advance or may be designated by the base station to inform the M2M device.
- Table 5 shows an example of a PAG-ADV message indicating ranging allocation A-MAP.
- Table 6 shows an example of ranging allocation A-MAP carrying UL resource allocation for each M2M device.
- Table 7 shows an example of ranging allocation A-MAP carrying UL resource allocation for a plurality of RNG-REQs as shown in FIG. 4.
- the base station does not include the resource offset in the page message if the UL synchronization is no longer maintained and a ranging network re-entry is needed. If the M2M device indicates a channel allocation for the RNG-REQ, but the resource offset does not exist, the M2M device transmits a ranging code to the base station to initiate the ranging process.
- FIG. 8 is a block diagram illustrating a wireless communication system in which an embodiment of the present invention is implemented.
- the MTC device 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 above-described embodiment, the operation of the MTC device may be implemented by the processor 51.
- the base station 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 63 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 above-described embodiment, the operation of the base station 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.
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Abstract
Description
필드 명 | 크기 (비트) | 설명 |
액션 코드(action code) | 1 | PAG-ADV 메시지의 목적(purpose)를 지시.0b0: 네트워크 재진입 수행0b1: 위치 갱신을 위한 레인징 수행 |
접속 타입(access type) | 3 | 네트워크 재진입을 위한 타입을 지시. 액션코드가 '0b0'일 때 주어짐.0b000: RNG-REQ를 위한 채널 할당0b001: S-RCH(synchronized ranging channel)을 위한 전용 레인징 채널 할당0b010: NS-RCH(non-synchronized ranging channel)을 위한 전용 레이징 채널 할당0b011-0b111 : reserved |
식별자 | M2M 기기를 가리키는 식별자 | |
자원 오프셋 | RNG-REQ를 위한 자원 할당을 가리키는 오프셋. 접속 타입이 '0b000'일 때 주어짐. |
필드 | 크기 | 설명 |
MGID | M2M 그룹 식별자 | |
Num_M2M_Devices | 그룹내 M2M 기기의 개수 | |
for (i=0; ; i<Num_M2M_Devices; i++) { | ||
액션 코드 | 표1 참조 | |
접속 타입 | 표1 참조 | |
식별자 | 표1 참조 | |
자원 오프셋 | 표1 참조 | |
} |
필드 명 | 크기 (비트) | 설명 |
MGID | M2M 그룹 식별자 | |
액션 코드 | 1 | PAG-ADV 메시지의 목적(purpose)를 지시.0b0: 네트워크 재진입 수행0b1: 위치 갱신을 위한 레인징 수행 |
접속 타입 | 3 | 네트워크 재진입을 위한 타입을 지시. 액션코드가 '0b0'일 때 주어짐.0b000: RNG-REQ를 위한 채널 할당0b001: S-RCH(synchronized ranging channel)을 위한 전용 레인징 채널 할당0b010: NS-RCH(non-synchronized ranging channel)을 위한 전용 레이징 채널 할당0b011-0b111 : reserved |
자원 오프셋 | M2M 기기가 RNG-REQ를 위한 자원 할당(예, 할당 A-MAP)의 모니터링을 개시하는 오프셋을 가리킴. 접속 타입이 '0b000'일 때 주어짐. |
필드 명 | 크기 | 설명 |
액션 코드 | 1 | PAG-ADV 메시지의 목적(purpose)를 지시.0b0: 네트워크 재진입 수행0b1: 위치 갱신을 위한 레인징 수행 |
접속 타입 | 3 | 네트워크 재진입을 위한 타입을 지시. 액션코드가 '0b0'일 때 주어짐.0b000: RNG-REQ를 위한 채널 할당0b001: S-RCH(synchronized ranging channel)을 위한 전용 레인징 채널 할당0b010: NS-RCH(non-synchronized ranging channel)을 위한 전용 레이징 채널 할당0b011-0b111 : reserved |
식별자 | M2M 기기를 가리키는 식별자 | |
자원 인덱스 | RNG-REQ를 위한 자원 할당을 가리키는 인덱스. 접속 타입이 '0b000'일 때 주어짐. |
필드 | 크기 | 설명 |
MGID | M2M 그룹 식별자 | |
서브그룹 지시(subgroup indication) | 0 : MGID modulo N = 01 : MGID modulo N = 12 : MGID modulo N = 2... | |
if (서브그룹 지시 == 0) { | ||
액션 코드 | 표1 참조 | |
접속 타입 | 표1 참조 | |
식별자 | 표1 참조 | |
자원 오프셋 | 레인징 할당 A-MAP을 가리키는 오프셋. 접속 타입이 '0b000'일 때 주어짐. | |
} | ||
각 서브그룹 지시에 대해 반복 .. |
필드 | 크기 | 설명 |
시작 오프셋 | RNG-REQ 메시지의 전송을 위한 자원 할당의 시작 오프셋 | |
자원 크기 | RNG-REQ 메시지의 전송을 위한 자원 할당의 크기 |
필드 | 크기 | 설명 |
시작 오프셋 | RNG-REQ 메시지의 전송을 위한 자원 할당의 시작 오프셋 | |
자원 크기 | 하나의 RNG-REQ 메시지의 전송을 위한 자원 할당의 크기 | |
종료 오프셋 | (페이징된 M2M 기기의 개수 * 자원 크기) 만큼을 지시한다. 서브그룹에 속하는 M2M 기기들에 대해 UL 할당이 순차적으로 대응된다. |
Claims (12)
- M2M(Machine To Machine) 통신을 위한 아이들 모드에서 동작 방법에 있어서,상기 아이들 모드에서 M2M 기기가 기지국으로부터 페이징 메시지를 수신하되, 상기 페이징 메시지는 액션 코드, 접속 타입 및 자원 오프셋을 포함하고, 상기 액션 코드는 상기 M2M 기기가 네트워크 재진입을 수행하는 것을 지시하고, 상기 접속 타입은 상기 네트워크 재진입을 위한 타입을 지시하고, 상기 자원 오프셋은 상기 접속 타입이 레인징 요청을 위한 자원 할당을 지시하면, 상기 자원 오프셋은 상향링크 할당에 대한 오프셋을 지시하며,상기 M2M 기기가 상기 기지국으로 상기 상향링크 할당을 이용하여 레인징 요청 메시지를 전송하는 것을 포함하는 동작 방법.
- 제 1 항에 있어서, 상기 M2M 기기가 상기 자원 오프셋을 기반으로 상기 상향링크 할당을 수신하는 것을 더 포함하는 동작 방법.
- 제 2 항에 있어서, 상기 자원 오프셋은 상기 M2M 기기가 상기 상향링크 할당의 모니터링을 개시하는 오프셋을 지시하는 동작 방법.
- 제 3 항에 있어서, 상기 페이징 메시지는 상기 M2M 기기가 속하는 그룹을 지시하는 그룹 식별자를 더 포함하는 동작 방법.
- 제 1 항에 있어서, 상기 M2M 기기는 상기 페이징 메시지를 수신함에 따라 상기 아이들 모드를 종료하는 동작 방법.
- 제 1 항에 있어서, 상기 상향링크 할당은 CDMA(code division multiple access) 할당 A-MAP(advanced-MAP) 인 동작 방법.
- M2M(Machine To Machine) 통신을 위한 장치에 있어서,무선 신호를 송신 및 수신하는 RF(radio frequency)부; 및상기 RF부와 연결되는 프로세서를 포함하되, 상기 프로세서는상기 아이들 모드에서 동작하는 동안 기지국으로부터 페이징 메시지를 수신하되, 상기 페이징 메시지는 액션 코드, 접속 타입 및 자원 오프셋을 포함하고, 상기 액션 코드는 상기 M2M 기기가 네트워크 재진입을 수행하는 것을 지시하고, 상기 접속 타입은 상기 네트워크 재진입을 위한 타입을 지시하고, 상기 자원 오프셋은 상기 접속 타입이 레인징 요청을 위한 자원 할당을 지시하면, 상기 자원 오프셋은 상향링크 할당에 대한 오프셋을 지시하며,상기 기지국으로 상기 상향링크 할당을 이용하여 레인징 요청 메시지를 전송하는 장치.
- 제 7 항에 있어서, 상기 프로세서는 상기 자원 오프셋을 기반으로 상기 상향링크 할당을 수신하는 장치.
- 제 8 항에 있어서, 상기 자원 오프셋은 상기 장치가 상기 상향링크 할당의 모니터링을 개시하는 오프셋을 지시하는 장치.
- 제 9 항에 있어서, 상기 페이징 메시지는 상기 장치가 속하는 그룹을 지시하는 그룹 식별자를 더 포함하는 장치.
- 제 7 항에 있어서, 상기 프로세서는 상기 페이징 메시지를 수신함에 따라 상기 아이들 모드를 종료하는 장치.
- 제 7 항에 있어서, 상기 상향링크 할당은 CDMA(code division multiple access) 할당 A-MAP(advanced-MAP) 인 장치.
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KR1020137011633A KR101381470B1 (ko) | 2010-12-07 | 2011-12-07 | M2m 통신을 위한 아이들 모드에서 동작 방법 및 이를 이용한 장치 |
US13/991,122 US9066296B2 (en) | 2010-12-07 | 2011-12-07 | Method for operation in idle mode for M2M communication, and device using same |
CN2011800587570A CN103250362A (zh) | 2010-12-07 | 2011-12-07 | 针对m2m通信的空闲模式操作方法和使用该方法的装置 |
EP11846875.0A EP2651048B1 (en) | 2010-12-07 | 2011-12-07 | Method for operation in idle mode for m2m communication, and device using same |
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US61/420,749 | 2010-12-07 | ||
US201161536523P | 2011-09-19 | 2011-09-19 | |
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US201161536520P | 2011-09-19 | 2011-09-19 | |
US61/536,523 | 2011-09-19 | ||
US61/536,524 | 2011-09-19 | ||
US61/536,520 | 2011-09-19 |
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Also Published As
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US20130250831A1 (en) | 2013-09-26 |
US9066296B2 (en) | 2015-06-23 |
EP2651048A4 (en) | 2017-02-22 |
KR101381470B1 (ko) | 2014-04-17 |
KR20130069844A (ko) | 2013-06-26 |
EP2651048B1 (en) | 2017-11-29 |
EP2651048A2 (en) | 2013-10-16 |
WO2012077977A3 (ko) | 2012-10-11 |
CN103250362A (zh) | 2013-08-14 |
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