WO2010128824A2 - Wpan 디바이스의 동작 방법 - Google Patents
Wpan 디바이스의 동작 방법 Download PDFInfo
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- WO2010128824A2 WO2010128824A2 PCT/KR2010/002921 KR2010002921W WO2010128824A2 WO 2010128824 A2 WO2010128824 A2 WO 2010128824A2 KR 2010002921 W KR2010002921 W KR 2010002921W WO 2010128824 A2 WO2010128824 A2 WO 2010128824A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
Definitions
- the present invention relates to a WPAN, and more particularly, to a method of operating a device in a wireless multi-hop environment.
- IEEE 802.15.4 MAC system is the most representative of MAC (Media Access Control) technologies for realizing a service requiring real-time and high reliability in a low-power wireless sensor network (WSN) system.
- IEEE 802.15.4 forms a network with a tree structure starting from a PAN Coordinator (PNC), and each node is allocated an independent active duration according to a scheduling method and then communicates for the active period. Support.
- PNC PAN Coordinator
- OSD outgoing superframe duration
- ISD Incoming Superfrmae Duration
- the node receives data using a carrier sense muteple access with collision avoidance (CSMA-CA) during a contention access period (CAP) basically for communication with a parent node.
- CSMA-CA carrier sense muteple access with collision avoidance
- CAP contention access period
- the child node may use a scheduling-based channel access method through a designated time slot. That is, in the case of nodes capable of one-hop communication from the PNC, a GTS (Guaranteed Time Slot) is allocated to perform a scheduled data communication.
- GTS Guard Time Slot
- the technical problem to be solved by the present invention is to provide a method of operating a device that can periodically hop a certain interval using a channel hopping sequence to improve the RF reliability degradation caused by a single frequency-based channel approach have.
- an embodiment of the WPAN operation method includes generating a connection request primitive to allow a device to request a connection with the coordinator, wherein the connection request primitive, A first parameter representing an offset value of the channel hopping sequence; And a second parameter indicating default channel hopping sequence usage.
- an embodiment of the WPAN operation method includes generating a connection indication primitive used to indicate reception of a connection request command, wherein the connection indication primitive, A first parameter representing an offset value of the channel hopping sequence; And a second parameter indicating default channel hopping sequence usage.
- an embodiment of the WPAN operation method includes generating a connection response primitive used to initiate a response to the connection indication primitive; A first parameter representing an offset value of the channel hopping sequence; A second parameter indicative of the length of the channel hopping sequence; And a third parameter representing a sequence of logical channel numbers set by a next higher layer.
- an embodiment of the WPAN operation method includes generating a connection confirmation primitive used to inform the next higher layer of the initiating device whether the connection request is successful;
- the connection confirmation primitive may include: a first parameter representing an offset value of a channel hopping sequence; A second parameter indicative of the length of the channel hopping sequence; And a third parameter representing a sequence of logical channel numbers set by a next higher layer.
- an embodiment of the WPAN operation method includes the step of generating an indication primitive defining a method for notifying the device when the beacon is received during the normal operating conditions;
- the indication primitive contains a parameter containing the content of the channel hopping specification.
- an embodiment of the WPAN operation method comprises the steps of: receiving a request primitive to allow a PAN coordinator or a destination device to transmit a slot allocation request; And applying channel diversity including a channel adaptation mode and a channel hopping mode to slot allocation according to flag information included in the request primitive.
- an embodiment of the method for operating a WPAN includes generating a start request primitive including a descriptor for a received beacon.
- a first element indicating use of a default channel hopping sequence;
- a second element representing a length of a channel hopping sequence;
- a third element representing a sequence of logical channel numbers set by a higher layer;
- a fourth element representing an offset value of the channel hopping sequence;
- a fifth element representing a length of a channel offset bitmap indicating whether a corresponding channel offset is used;
- a method of operating a WPAN including generating a beacon frame, wherein the beacon frame, the channel diver including a channel adaptation mode and a channel hopping mode It includes a field indicating which mode the DSME is operating in.
- an embodiment of the WPAN operation method includes generating a connection response command frame for a connection request command, wherein the connection response command frame is a channel hopping sequence offset Contains a link status field that contains a copy.
- an embodiment of the method for operating a WPAN includes generating a connection request command frame, wherein the connection request command frame is an unconnected device that wants to be associated with a PAN.
- the offset value of includes a channel offset field.
- an embodiment of the WPAN operation method includes generating a connection response command frame, wherein the connection response command frame is a PAN beacon mode and channel hopping mode
- the connection response command frame is a PAN beacon mode and channel hopping mode
- a channel hopping sequence length field indicating a length of a channel hopping sequence used in a PAN when operating in a PAN
- And a channel hopping sequence field indicating a channel hopping sequence used in the PAN.
- an embodiment of the WPAN operation method includes generating a handshake command frame including a DSME feature field, wherein the DSME feature field or Channel diversity mode subfield indicating channel hopping mode.
- the channel offset value different from the channel offset value of other devices to prevent the same channel is used by other devices in the interference range Selecting a; And repeating the channel hopping sequence reflecting the channel offset over all slots of the multi superframe including the plurality of superframes.
- an embodiment of the WPAN operation method receiving a beacon frame; Updating a value of a channel diversity description field of a PAN descriptor with a channel diversity description field of the beacon frame; Transmitting a value of the channel diversity description field to a higher layer through an confirm primitive; And updating a channel offset bitmap of a MAC PIB with a value of a channel offset subfield of the beacon frame.
- the MAC sublayer updates the value of the DCHDescriptor with the DCHDescriptor parameter in the request primitive It includes; step.
- an embodiment of the WPAN operation method when the DSME and the channel hopping mode is used in the PAN, the MAC sublayer setting the channel diversity description field of the beacon frame ; And setting the MAC PIB attribute to a value of a channel offset bitmap field indicating a channel offset being used in one-hop neighbor devices.
- an embodiment of the WPAN operation method comprises the steps of: mapping a logical channel number and each of the channel hopping sequence for physical layer frequency hopping; And PHY-FH using the channel hopping sequence corresponding to the logical channel number of the MAC hopping sequence.
- the channel diversity gain is obtained by periodically hopping using the channel hopping sequence, thereby improving reliability.
- the channel hopping sequence by sharing the channel hopping sequence between devices, it supports a mesh structure rather than a tree structure, which enables the device to minimize latency by selecting an optimal relay device based on channel conditions and system resources. Since the mesh structure enables the upper layer to select multiple relay paths, diversity gain can be obtained through the mesh structure.
- Three-way handshaking is also used to address network scalability issues due to the device's monopoly of channel hopping sequences.
- the distributed time slot allocation method solves the problem of shortening the device life caused by the complexity and computational power consumption of a specific device that can be caused by centralized scheduling, and the stability of the network by eliminating the dependency of a specific node on the link formation decision. Can improve.
- FIG. 10 is a diagram illustrating an example of a detailed format of a DSME superframe description field among the beacon frame formats of FIG. 9;
- FIG. 11 illustrates an example of a detailed format of a channel hopping description field of the beacon frame format of FIG. 9;
- connection status field of a connection response command illustrates an example of a connection status field of a connection response command according to the present invention
- FIG. 13 illustrates an example of a DSME-connection request command format according to the present invention.
- FIG. 14 illustrates a detailed format of a capacity information field of a DSME-connection request command
- 16 is a diagram illustrating an example of a format of a DSME handshake command
- FIG. 17 illustrates an example of a detailed format of a DSME feature field of a DSME handshake command
- 24 is a flow diagram illustrating an example of an operation process when a device receives an MLME-DSME request primitive
- 25 is a flowchart illustrating an example of a method of operating a channel hopping sequence using a channel hopping offset value
- FIG. 26 is a diagram illustrating an example of a processing procedure of a connection request / response command frame
- FIG. 27 is a flowchart illustrating an example of a method of operating a PHY channel hopping sequence using a logical channel concept.
- an embodiment of the WPAN operation method includes generating a connection request primitive to allow a device to request a connection with the coordinator, wherein the connection request primitive, A first parameter representing an offset value of the channel hopping sequence; And a second parameter indicating default channel hopping sequence usage.
- an embodiment of the WPAN operation method includes generating a connection indication primitive used to indicate reception of a connection request command, wherein the connection indication primitive, A first parameter representing an offset value of the channel hopping sequence; And a second parameter indicating default channel hopping sequence usage.
- an embodiment of the WPAN operation method includes generating a connection response primitive used to initiate a response to the connection indication primitive; A first parameter representing an offset value of the channel hopping sequence; A second parameter indicative of the length of the channel hopping sequence; And a third parameter representing a sequence of logical channel numbers set by a next higher layer.
- an embodiment of the WPAN operation method includes generating a connection confirmation primitive used to inform the next higher layer of the initiating device whether the connection request is successful;
- the connection confirmation primitive may include: a first parameter representing an offset value of a channel hopping sequence; A second parameter indicative of the length of the channel hopping sequence; And a third parameter representing a sequence of logical channel numbers set by a next higher layer.
- an embodiment of the WPAN operation method includes the step of generating an indication primitive defining a method for notifying the device when the beacon is received during the normal operating conditions;
- the indication primitive contains a parameter containing the content of the channel hopping specification.
- an embodiment of the WPAN operation method comprises the steps of: receiving a request primitive to allow a PAN coordinator or a destination device to transmit a slot allocation request; And applying channel diversity including a channel adaptation mode and a channel hopping mode to slot allocation according to flag information included in the request primitive.
- an embodiment of the method for operating a WPAN includes generating a start request primitive including a descriptor for a received beacon.
- a first element indicating use of a default channel hopping sequence;
- a second element representing a length of a channel hopping sequence;
- a third element representing a sequence of logical channel numbers set by a higher layer;
- a fourth element representing an offset value of the channel hopping sequence;
- a fifth element representing a length of a channel offset bitmap indicating whether a corresponding channel offset is used;
- a method of operating a WPAN including generating a beacon frame, wherein the beacon frame, the channel diver including a channel adaptation mode and a channel hopping mode It includes a field indicating which mode the DSME is operating in.
- an embodiment of the WPAN operation method includes generating a connection response command frame for a connection request command, wherein the connection response command frame is a channel hopping sequence offset Contains a link status field that contains a copy.
- an embodiment of the method for operating a WPAN includes generating a connection request command frame, wherein the connection request command frame is an unconnected device that wants to be associated with a PAN.
- the offset value of includes a channel offset field.
- an embodiment of the WPAN operation method includes generating a connection response command frame, wherein the connection response command frame is a PAN beacon mode and channel hopping mode
- the connection response command frame is a PAN beacon mode and channel hopping mode
- a channel hopping sequence length field indicating a length of a channel hopping sequence used in a PAN when operating in a PAN
- And a channel hopping sequence field indicating a channel hopping sequence used in the PAN.
- an embodiment of the WPAN operation method includes generating a handshake command frame including a DSME feature field, wherein the DSME feature field or Channel diversity mode subfield indicating channel hopping mode.
- the channel offset value different from the channel offset value of other devices to prevent the same channel is used by other devices in the interference range Selecting a; And repeating the channel hopping sequence reflecting the channel offset over all slots of the multi superframe including the plurality of superframes.
- an embodiment of the WPAN operation method receiving a beacon frame; Updating a value of a channel diversity description field of a PAN descriptor with a channel diversity description field of the beacon frame; Transmitting a value of the channel diversity description field to a higher layer through an confirm primitive; And updating a channel offset bitmap of a MAC PIB with a value of a channel offset subfield of the beacon frame.
- the MAC sublayer updates the value of the DCHDescriptor with the DCHDescriptor parameter in the request primitive It includes; step.
- an embodiment of the WPAN operation method when the DSME and the channel hopping mode is used in the PAN, the MAC sublayer setting the channel diversity description field of the beacon frame ; And setting the MAC PIB attribute to a value of a channel offset bitmap field indicating a channel offset being used in one-hop neighbor devices.
- an embodiment of the WPAN operation method comprises the steps of: mapping a logical channel number and each of the channel hopping sequence for physical layer frequency hopping; And PHY-FH using the channel hopping sequence corresponding to the logical channel number of the MAC hopping sequence.
- the channel diversity method used in the present invention includes a channel adaptation method and a channel hopping method.
- Channel adaptation does not change the active channel until the received signal quality falls below a set threshold, while channel hopping switches the channel for each time slot according to a predefined channel hopping pattern.
- the channel hopping pattern that is, the channel hopping sequence, is set by the next higher layer (NHL).
- the PAN operation mode includes a beacon enable mode and a non beacon enabled mode.
- Channel adaptation and channel hopping modes are implemented on a DSME (Distributed Synchronous Multi-Channel Extension) structure, ie enhanced GTS (EGTS), in a beacon-enabled PAN.
- DSME Distributed Synchronous Multi-Channel Extension
- EGTS enhanced GTS
- Primitives are defined by focusing on services between service users and providers. There are four kinds of primitives: requests, indications, responses, and confirmations. Among the primitives, the primitives related to the operation of the device according to the present invention will be described, and each primitive may also include various conventional parameters not described herein. The device can create and use each primitive according to the purpose.
- 1 illustrates some parameters of an MLME-ASSOCIATE request primitive.
- the MLME-ASSOCIATE request primitive is used by the device to request the coordinator to connect.
- the MLME-ASSOCIATE request primitive is used to pass the connection request from the device's NHL to the MAC layer.
- the MLME-ASSOCIATE request primitive contains a ChannelOffset parameter, a ChannelSequenceRequest parameter, and the like.
- the ChannelOffset parameter indicates the offset value of the channel hopping sequence the device wants to use.
- the ChannelSequenceRequest parameter indicates the use of the default channel hopping sequence. If this parameter is '1', it requests its coordinator the channel hopping sequence.
- FIG. 2 is a diagram illustrating some parameters of an MLME-ASSOCIATE indication primitive.
- the MLME-ASSOCIATE indication primitive is used to inform the NHL of receiving a connection request command.
- the MLME-ASSOCIATE indication primitive includes a ChannelOffset parameter, a ChannelSequenceRequest parameter, and the like.
- the MLME-ASSOCIATE response primitive is used to initiate a response to the MLME-ASSOCIATE indication primitive.
- the MLME-ASSOCIATE response primitive includes a ChannelOffset parameter, a ChannelHoppingSequenceLength parameter, a ChannelHoppingSequence parameter, and the like.
- the ChannelOffset parameter represents an offset value of the channel hopping sequence.
- the ChannelHoppingSequenceLength parameter indicates the length of the channel hopping sequence.
- the ChannelHoppingSequence parameter represents a sequence of logical channel numbers set by the next higher layer, and the ChannelHoppingSequence value is set when the initiating device requesting the connection has a ChannelSequenceRequest parameter of 1 in the connection request.
- the PAN coordinator selects the sequence to use when forming the PAN.
- the MLME-ASSOCIATE confirm primitive is used to inform the next higher layer of the initiating device whether the connection request is successful.
- the MLME-ASSOCIATE confirm primitive includes the ChannelOffset parameter, ChannelHoppingSequenceLength parameter, ChannelHoppingSequence parameter, and so on. Since this parameter has the same content as the parameter described with reference to FIG. 3, a detailed description of the parameter of FIG. 4 will be omitted.
- Two modes of channel diversity allocate DSME slots through a DSME handshake command.
- channel hopping uses a DSME timeslot allocation bitmap (TAB).
- TAB DSME timeslot allocation bitmap
- the MLME of the source device receives the MLME-DSME-GTS request primitive (S251)
- the DSME handshake for DSME allocation is performed.
- a command frame is generated (S252).
- the feature type subfield of the DSME feature field of the DSME handshake command frame is set to '1' (ie, a DSME allocation), and the DSME handshake type subfield is also set to '1' (ie, a DSME request).
- the MLME of the source device transmits a handshake command frame to the destination device (S253).
- FIG. 5 shows some parameters of the MLME-DSME-START request primitive
- FIG. 6 shows details of DCHDecriptor parameters of the MLME-DSME-START request primitive.
- the MLME-DSME-START request primitive is for the PAN Coordinator to start operation by forming a new PAN or by specifying the settings required for MAC operation after the device joins a new network.
- the DCHDescriptor parameter includes its components as DefaultSequenceFlag, ChannelHoppingSequenceLength, ChannelHoppingSequence, ChannelOffset, ChannelOffsetBitmapLength, ChannelOffsetBitmap, and the like.
- DefaultSequenceFlag indicates the use of a default channel hopping sequence. If the value of this element is '1' then the default channel hopping sequence is used and the device does not request a channel hopping sequence when connected to the PAN.
- ChannelHoppingSequenceLength represents the length of the channel hopping sequence.
- ChannelHoppingSequence represents a sequence of logical channel numbers set by the Next Higher Layer.
- the PAN coordinator selects the sequence to use when forming the PAN.
- ChannelOffset represents an offset value of a channel hopping sequence element.
- ChannelOffsetBitmapLength represents the length of ChannelOffsetBitmap.
- the bit value of the ChannelOffsetBitmap sequence indicates whether the corresponding channel offset is in use. If the channel offset is in use, its bit value is set to '1', otherwise it is set to '0'. For example, if the value of the channel offset bitmap length element is 16 and the 1,2,4th channel offset is in use, the sequence of the channel offset bitmap element is '0110100000000000'.
- FIG. 7 is a diagram illustrating some parameters of the MLME-DSME-BEACON-NOTIFY indication primitive.
- the MLME-DSME-BEACON-NOTIFY indication primitive defines how the device can know when a beacon is received under normal operating conditions.
- the MLME-DSME-BEACON-NOTIFY indication primitive contains a ChannelHoppingSpecification parameter.
- the ChannelHoppingSpecification parameter indicates the content of the channel hopping specification.
- FIG. 8 is a diagram illustrating an example of a multi-superframe structure according to the present invention.
- a multi-superframe includes a plurality of superframes, and each superframe includes a beacon section, a contention free channel access section (CAP), and a contention free period (CFP). do.
- CAP contention free channel access section
- CCP contention free period
- the beacon frame is transmitted during the beacon period, and the devices receiving the beacon listen to time information for time synchronization, information for network configuration and maintenance, and frequency resource information such as channel hopping offset values.
- the CAP includes a control signal for allocating the GTS or informing the allocated GTS. Although the scheduling of the GTS is performed during this interval, data exchange for a single urgent message or a message that is inefficient in scheduling is also performed in this interval.
- GTS is assigned to the CFP.
- the timeslots of the CFP are used to exchange data frames using channel adaptation or channel hopping methods.
- channel hopping is performed as shown in FIG. 9, and the hopping of the channel is hopped in timeslots according to a predetermined sequence.
- the length of the hopping sequence is generally longer than the number of GTSs in one superframe, and when the sequence to be hopping is not finished during one GTS interval, the hopping sequence is hopped by concatenating in the GTS in the next superframe.
- the channel to hop in a particular timeslot is the end of a hopping sequence
- the channel to hop in the next timeslot becomes the first value of the sequence. That is, the channel to be used in a particular timeslot is obtained by cyclic shift of one hopping sequence.
- Each hopping sequence may be reused in a subnet unit having a plurality of devices according to network configuration requirements.
- a network composed of a plurality of devices sharing one hopping sequence is called a subnet.
- the hopping sequences shared in one subnet are the same and devices that want orthogonality of the hopping sequence reuse the hopping sequence with different offset values in the same hopping sequence.
- each DSME-GTS slot uses a different channel for reception.
- the series of channels used in each DSME slot is called a channel hopping sequence.
- the same channel hopping sequence is repeated on all DSME slots in multiple superframes.
- the device may select a Channel Offset Value to prevent the same channel from being used between devices within the RF interference signal range to minimize the impact of the interference signal by the same communication channel.
- devices in a PAN with one channel hopping sequence have different channel hopping offset values, they can access different channels in a given DSME slot because of orthogonality in time and frequency.
- a device of a PAN or subnet using one channel hopping sequence selects a different channel offset value from other devices (S261).
- the device repeats the channel hopping sequence on all DSME-GTS slots in the multi-superframe by reflecting the offset value (S262).
- a schedule of channels and DSMEs in channel hopping mode is as follows.
- the channel hopping sequence is ⁇ 1,2,3,4,5,6 ⁇ and the channel hopping offset values of the two devices are 0 and 2, respectively.
- DSME slots (timeslot, channel) for a device with a channel hopping offset value of 0 are: (1,1) (2,2) (3,3) (4,4) (5,5) (6,6 ) (7,1) (8,2) (9,3).
- DSME-GTS slots are (1,3) (2,4) (3,5) (4,6) (5,1) (6,2), etc. .
- two devices can be prevented from using the same channel in one slot.
- the channel number C at a given DSME-GTS slot index i is determined as in Equation 1 below.
- CHSeq [j] represents the j th channel number in the channel hopping sequence being used
- CHOffset is the channel offset value
- BSN is the beacon sequence number
- CHSeqLength is the length of the channel hopping sequence.
- Equation 2 The total number of DSME-GTS slots (NoSlot) in the multi-superframe is shown in Equation 2.
- MO represents the length of time that a group of superframes considered as one multi-superframe is active, and this value is a value included in the beacon frame (FIGS. 9 and 10) to be examined below.
- SO indicates macSuperframeOrder among MAC PIB (PAN Inforamtion Base) attributes and indicates the length of the superframe.
- FIG. 9 illustrates an example of a beacon frame format according to the present invention.
- a beacon frame is largely composed of a MAC header (MHR), a MAC payload, and a MAC footer (MFR).
- MHR MAC header
- MFR MAC footer
- the MAC header includes a frame control field, sequence number field, addressing fields, auxiliary security header, and the MAC payload is a superframe specification.
- Field pending address fields, DSME superframe description field, channel hopping specification field, time synchronization specification field, beacon bitmap field, beacon payload (beacon payload) field.
- MFR includes a Frame Chech Sequence (FCS).
- the MAC header, the super frame field of the MFR and MAC payload, the current address fields, the time synchronization description field, the beacon payload field and the like are the same as the contents of the format of the conventional beacon frame, so the detailed description thereof will be omitted below. Based on the fields that are newly added or changed according to.
- FIG. 10 is a diagram illustrating an example of a detailed format of a DSME superframe description field among the beacon frame formats of FIG. 9.
- the DSME superframe description field includes a multi-superframe order (MO) subfield, a CAP reduction flag subfield, an embedded CAP / CFP flag subfield, and a channel diversity mode (Channel). Diversity Mode) subfield, CAP index subfield, subslot number subfield, GACK flag subfield, ECFP start slot length subfield, and ECFP start slot subfield.
- MO multi-superframe order
- CAP index subfield subslot number subfield
- GACK flag subfield ECFP start slot length subfield
- ECFP start slot subfield ECFP start slot subfield
- the MO field indicates the length of time period when a group of super frames, which is regarded as one multi-super frame, is activated.
- the CAP reduction flag subfield is set to '1' if CAP reduction is enabled and to '0' otherwise.
- the embedded CAP / CFP flag subfield is set to '0' when embedded CAP is used.
- the CAP index subfield indicates the number of superframes before the next CAP starts.
- the subslot number subfield indicates the number of subslots divided into slots.
- the channel diversity mode subfield indicates the type of channel diversity. If the value of this subfield is '0', the DSME is operated in the channel adaptation mode, and if it is '1', the DSME is operated in the channel hopping mode. If this subfield is '0', the value of the channel hopping description field of the beacon frame shown in FIG. 10 does not exist.
- the GACK flag subfield indicates whether the transmitting device is using a DSME multi-frame structure.
- the ECFP Start Slot Length subfield indicates the length of the ECFP Start Subfield, and the ECFP Start Slot Subfield indicates the number of GACK frame transmission timeslots.
- FIG. 11 is a diagram illustrating an example of a detailed format of a channel hopping description field of the beacon frame format of FIG. 9.
- the channel hopping description field shown in FIG. 11 may or may not be present in the beacon frame according to the value of the channel diversity mode subfield.
- a channel hopping description field of a beacon frame includes a default sequence flag subfield, a channel offset subfield, a channel offset bitmap length subfield, and a channel offset bitmap subfield.
- the channel diversity mode subfield of the DSME superframe description field of the beacon frame is set to '1', the channel hopping description field shown in FIG. 11 exists in the beacon frame.
- the default sequence flag subfield indicates the use of the default hopping sequence. If this value is '1', the beacon frame indicates that the default channel hopping sequence is used.
- the Channel Offset subfield describes the channel hopping offset value of the device.
- the channel offset bitmap length subfield describes the length of the channel offset bitmap subfield.
- the channel offset bitmap subfield indicates the occupancy of channel hopping offset values among neighboring devices and is represented by a bitmap. If the corresponding channel hopping offset value has already been occupied by the neighboring device, each bit is set to '1', while if the corresponding channel hopping value is not occupied, it is set to '0'.
- a channel offset bitmap of '1100100 ... 0' indicates that channel hopping offset values of 0,1,4 are used by the neighboring device.
- the i th bit in the channel offset bitmap corresponds to the (i-1) th channel offset value.
- the length of the channel offset bitmap subfield is variable, which is defined by the value specified in the channel offset bitmap length subfield.
- the value of the ChannelHoppingSpecification field of the PANDescriptor is updated with a Channel Diversity Specification of the received beacon frame.
- the value of the macChannelOffsetBitmap of the MAC PIB attribute is updated to the value of the received channel offset subfield (see FIG. 11). For example, when the channel offset is set to 0x01, the value of macChannelOffsetBitmap corresponding to the channel is set to '1'. Moreover, the value of macChannelOffsetBitmap indicates whether the channel offset value is used by 1-hop neighbor devices.
- the MAC PIB of the MAC sublayer updates the value of the DCHDescriptor with the value of the DCHDescriptor parameter.
- the MAC sublayer sets a Channel Diversity Specification field of the beacon frame.
- the value of the macChannelOffsetBitmap of the MAC PIB attribute is set to the value of the ChannelOffsetBitmap field indicating the channel offset used between neighboring devices of one hop.
- connection status field of a connection response command is a diagram illustrating an example of a connection status field of a connection response command according to the present invention.
- connection status field in the connection response command frame includes connection success, PAN connection rejection, and the like, in particular, channel hopping sequence offset overlap.
- Offset redundancy is used to notify the requesting device if the value of the channel offset set by the device requesting the connection overlaps with the offset used by the peripheral device within 1 hop of the requested coordinator device. Through this, the device requesting the connection can know that the offset value requested by the neighboring device is used.
- connection request command frame As shown in FIG. 26 (S271), the device generates a connection response command frame including the connection status field shown in FIG. 12 as a response (S272) and transmits it (S273).
- the connection request command frame or the connection response command frame is a kind of MAC command frames.
- the connection request command frame and the connection response command frame in the DSME will be described with reference to FIGS. 13 to 15.
- the source device When the source device generates and transmits the DSME-connection request command frame of FIG. 13, the destination device receiving the frame generates and transmits the DSME-connection response command frame of FIG. 15 to the source device.
- FIG. 13 is a diagram illustrating an example of a format of a DSME-connection request command according to the present invention
- FIG. 14 is a diagram illustrating a detailed format of a capacity information field of a DSME-connection request command.
- the DSME-connection request command format includes MHR fields, command frame identifier field, capacity information field, and channel offset field.
- the channel offset field is set to an offset value of an unconnected device that wants to connect with the PAN. This value is specified by the next higher layer.
- the capacity information field will be described with reference to FIG. 15. Since the contents of the remaining subfields are the same as the contents of the conventional connection request command format, description thereof will be omitted.
- the capacity information field of the DSME-connection request command format may include an optional PAN coordinator subfield, a device type subfield, a power source subfield, an idle receiver subfield, and a channel sequence request. Subfield, security capacity subfield, and address assignment subfield.
- the channel sequence request subfield has a length of 1 bit and is set to '1' when the PAN is operated in the beaconable mode and the channel hopping mode. Since the contents of the remaining subfields are the same as the contents of the existing connection request command format, description thereof is omitted.
- FIG. 15 illustrates an example of a DSME-connected response command format according to the present invention.
- the DSME-connection response command frame includes MHR fields, command frame identifier field, short address field, connection status field, channel hopping sequence length field, and channel hopping sequence field.
- the channel hopping sequence length field indicates the length of the channel hopping sequence used in the PAN when the PAN operates in the beaconable mode and the channel hopping mode.
- the length of the channel hopping sequence field is defined by the channel hopping sequence length field, and the channel hopping sequence field indicates the channel hopping sequence used in the PAN when the PAN is operated in the beaconable mode and the channel hopping mode. Since the contents of the remaining subfields are the same as the contents of the existing connection response command format, description thereof is omitted.
- FIG. 16 is a diagram illustrating an example of a format of a DSME handshake command
- FIG. 17 is a diagram illustrating an example of a detailed format of a DSME feature field of a DSME handshake command.
- a DSME handshake command frame includes an MHR field, a command frame identifier field, and a DSME feature field. Since the MHR field and the command frame identifier field are the same as the contents of the conventional DSME handshake command frame, a detailed description thereof will be omitted here.
- the DSME feature field of the DSME handshake command frame includes a channel diversity mode subfield, a DSME length subfield, a DSME direction subfield, a DSME feature type subfield, a DSME handshake type subfield, and a preferred channel access subfield.
- the channel diversity mode subfield has a length of 1 bit and is set to '0' in channel adaptation mode and '1' in channel hopping mode.
- the DSME ABT description subfield is composed of a DSME ABT sub-block length subfield, a DSME ABT sub-block index subfield, and a DSEM ABT sub-block subfield.
- the DSME ABT sub-block length subfield indicates the length of the unit DSME ABT sub-block
- the DSME ABT sub-block index subfield indicates the start of an ABT sub-block in the entire ABT
- the DSME ABT sub-block is an allocation bitmap Contains sub-blocks of the table.
- FIG. 18 shows an example of a TAB sub-block according to the present invention.
- TAB Tileslot Allocation Bitmap
- TAB Tileslot Allocation Bitmap
- the bitmap of the TAB indicates the use of corresponding DSME slots, and is set to '1' if the slot is allocated for transmit (Tx) or receive (Rx), and set to '0' if the slot is available.
- the DSME ABT sub-block index and DSME ABT sub-block length indicate the starting position and length of the TAB sub-block.
- subblocks of the entire TAB are exchanged for scheduling.
- FIG. 19 is a diagram illustrating an example of a channel hopping method in the physical layer according to the present invention.
- the channel diversity methods may exist together with the channel hopping method performed at the physical layer.
- the fundamental difference between the channel hopping method in the MAC and the physical layer (PHY) is whether channel switching occurs during transmission of the Protocol Data Unit (PPDU).
- PPDU Protocol Data Unit
- FIG. 19a in the case of the MAC channel hopping (MAC-CH) structure (FIG. 19a), each PPDU is transmitted on a different frequency channel, whereas in the case of PHY-FH (FIG. 19b)
- the PPDU is divided into segments and each segment is transmitted in a sub time slot having a different frequency channel in the PHY-FH.
- the PHY Prior to transmitting the first PPDU, the PHY sets the physical channel information obtained from the channel hopping sequence for the MAC-CH and PHY-FH. Since the PHY cannot determine which channel to transmit the frame on, the present invention introduces the concept of logical channel number.
- FIG 20 it shows how to map the logical channel number to the channel hopping sequence used for PHY-FH.
- PHY-FH employs channel hopping sequences ⁇ 1,3,5,7 ⁇ , ⁇ 2,4,6,8 ⁇ , ⁇ 9,11,13,15 ⁇ and ⁇ 10,12,14,16 ⁇ , Each sequence is denoted by logical channel numbers 1-4.
- the MAC sets logical channel number 1, the PHY uses the channel hopping sequence (1, 3, 5, 7) for the transmission of the PPDU.
- the device maps channel hopping sequences and logical channel numbers for the PHY-FH (S281), and the PHY-FH uses the channel hopping sequence corresponding to the logical channel number of the MAC hopping sequence (S282). ).
- the PHY channel hopping sequence is ⁇ 2,4,6,8) corresponding to logical channel number 2 and ⁇ corresponding to logical channel number 3 9,11,13,15 ⁇ , ⁇ 10,12,14,16 ⁇ corresponding to logical channel number 4, and ⁇ 1,3,5,7 ⁇ corresponding to logical channel number 1.
- FIG. 22 illustrates a part of MAC PIB attributes according to the present invention.
- the MAC PIB attribute includes macChannelDiversityMode, macChannelHoppingSequence, and macChannelOffset.
- the MAC PIB attribute includes other attributes in addition to these attributes, but FIG. 22 mainly shows attributes related to embodiments of the present invention.
- macChannelDiversityMode indicates the type of channel diversity mode. If the value of macChannelDiversityMode is 0x00, it indicates channel adaptation (default), and if it is 0x11, it indicates channel hopping. These values are not valid for non-beacon capable PAN.
- macChannelHoppingSequence represents a sequence of logical channel numbers. This sequence is set by the next higher layer.
- macChannelOffset represents an offset value of a channel hopping sequence. The default value is zero.
- FIG. 23 illustrates an example of reusing one hopping sequence using an offset value.
- Node A and Node B share the same channel hopping sequence C, which can avoid or interfere with each other by maintaining orthogonality with each other by using different channel offset values.
- nodes in a subnet can use the same offset value.
- the maximum number of nodes allowed is limited to the number of orthogonal code sequences provided by the hopping sequence, thereby weakening scalability of the network. For example, if the elements of the hopping sequence C between nodes in FIG. 23 are not equal to each other (i.e., ci ⁇ cj), the maximum number of nodes that can operate simultaneously using this is limited to N.
- the channel hopping sequence is stored in the MAC PIB, and the node may have a plurality of sequences.
- the offset value of the channel hopping sequence is important information with respect to the communication link configuration, which can update the offset value information between nodes based on the information of the beacon frame.
- the beacon has a resource allocation field with respect to channel sequence offset and time slot allocation, through which the node determines whether to perform distributed resource allocation or centralized resource allocation.
- the offset information included in the beacon frame includes offset information of nodes at a 1-hop distance with respect to the node transmitting the beacon frame, nodes that scan the beacon frame and select an offset value are selected from nodes of 2-hop distance. Set the desired offset value based on the offset information.
- This approach also begins with scanning beacons, just like the distributed approach.
- the node informs the centralized method of resource allocation field of the beacon, and requests a link for communication rather than requiring an independent hopping sequence offset in the CAP period. That is, when the number of timeslots required and the node ID to form the link are transmitted, the request is transmitted to the server managing the centralized resource allocation process, and the server based on the channel and the timeslot index (that is, the channel for hopping). Number and timeslot number for transmission / reception).
- the time slot allocation process for communication is divided into a distributed method and a centralized method. Since the centralized method has been described in the above offset allocation method, only the distributed allocation method will be described below.
- the source device transmits the number of timeslots required for the destination device, the available timeslot bitmap, and the channel hopping sequence offset value used by the destination device to Unicast.
- the destination device that receives it generates an assignable time slot bitmap by XORing its available time slot bitmap and the time slot bitmap received from the source device, and selects as many bitmaps as the number of timeslots requested by the source device. And send it to the source device with its channel hopping sequence offset value.
- the allocated time slot bitmap is transmitted through broadcast rather than unicast so that peripheral devices can listen to it.
- the source device checks the time slot allocation bitmap received from the destination device to determine whether it is proper, and if satisfied, resends a new timeslot allocation table to the destination device through a notify frame. In this case, the neighboring nodes can listen through broadcast. This three-way handshaking method not only allows neighboring nodes using the same offset to update the timeslot available information, but also solves the hidden node problem.
- the channel is designated as a block channel and is determined as a sequence element that is not available in the channel bitmap.
- block channel information is stored in the PIB and managed separately, which is called a channel black list.
- channels with good channel quality, especially those used, are called channel white lists and are stored separately in the PIB.
- the invention can also be embodied as computer readable code on a computer readable recording medium.
- the computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like.
- the computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.
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Abstract
Description
Claims (30)
- WPAN 디바이스가 동작하는 방법에 있어서,디바이스에게 코디네이터와의 연결 요청을 허락하는 연결 요청 프리미티브를 생성하는 단계;를 포함하며,상기 연결 요청 프리미티브는,채널 호핑 시퀀스의 오프셋 값을 나타내는 제1 파라미터; 및디폴트 채널 호핑 시퀀스 사용을 가리키는 제2 파라미터;를 포함하는 것을 특징으로 하는 WPAN 디바이스 동작 방법.
- 제 1항에 있어서,상기 제2 파라미터의 값이 '1'이면, 자신의 코디네이터에게 채널 호핑 시퀀스를 요청하는 단계;를 더 포함하는 것을 특징으로 하는 WPAN 디바이스 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,연결 요청 명령의 수신을 가리키는데 사용되는 연결 지시 프리미티브를 생성하는 단계;를 포함하며,상기 연결 지시 프리미티브는,채널 호핑 시퀀스의 오프셋 값을 나타내는 제1 파라미터; 및디폴트 채널 호핑 시퀀스 사용을 가리키는 제2 파라미터;를 포함하는 것을 특징으로 하는 WPAN 디바이스 동작 방법.
- 제 3항에 있어서,상기 제2 파라미터의 값이 '1'이면, 자신의 코디네이터에게 채널 호핑 시퀀스를 요청하는 단계;를 더 포함하는 것을 특징으로 하는 WPAN 디바이스 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,연결 지시 프리미티브에 대한 응답을 시작하는데 사용되는 연결 응답 프리미티브를 생성하는 단계;를 포함하며,상기 연결 응답 프리미티브는,채널 호핑 시퀀스의 오프셋 값을 나타내는 제1 파라미터;채널 호핑 시퀀스의 길이를 나타내는 제2 파라미터; 및다음 상위 계층에 의해 설정되는 논리적 채널 번호의 시퀀스를 나타내는 제3 파라미터;를 포함하는 것을 특징으로 하는 WPAN 디바이스 동작 방법.
- 제 5항에 있어서,PAN 코디네이트가 PAN을 생성시 사용할 시퀀스를 선택하는 단계;를 더 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,연결 요청이 성공적인지 여부를 착수 디바이스의 다음 상위 계층에게 알리는데 사용되는 연결 확인 프리미티브를 생성하는 단계;를 포함하며,상기 연결 확인 프리미티브는,채널 호핑 시퀀스의 오프셋 값을 나타내는 제1 파라미터;채널 호핑 시퀀스의 길이를 나타내는 제2 파라미터; 및다음 상위 계층에 의해 설정되는 논리적 채널 번호의 시퀀스를 나타내는 제3 파라미터;를 포함하는 것을 특징으로 하는 WPAN 디바이스 동작 방법.
- 제 7항에 있어서,PAN 코디네이트가 PAN을 생성시 사용할 시퀀스를 선택하는 단계;를 더 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,디바이스에게 비컨이 정상 동작 조건 동안 수신되는 때를 알리는 방법을 정의한 지시 프리미티브를 생성하는 단계;를 포함하며,상기 지시 프리미티브는,채널 호핑 기술(Specification)의 내용을 포함하는 파라미터를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,PAN 코디네이터 또는 목적지 디바이스에게 슬롯의 할당 요청을 전송하는 것을 허락하는 요구 프리미티브를 수신하는 단계; 및상기 요구 프리미티브에 포함된 플래그 정보에 따라 슬롯 할당에 채널 적응 모드 및 채널 호핑 모드를 포함하는 채널 다이버시티를 적용하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- 제 10항에 있어서, 상기 채널 다이버시티를 적용하는 단계는,핸드쉐이크 명령을 통해 슬롯을 할당하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- 제 10항에 있어서, 채널 다이버시티를 적용하는 단계는,채널 호핑 모드의 경우 타임슬롯 할당 비트맵(TAB)을 이용하여 디바이스간 채널 및 슬롯 사용을 교환하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,수신된 비컨에 대한 기술자(Descriptor)를 포함하는 시작 요구 프리미티브를 생성하는 단계;를 포함하며,상기 기술자는,디폴트 채널 호핑 시퀀스의 사용을 가라키는 제1 요소;채널 호핑 시퀀스의 길이를 나타내는 제2 요소;상위 계층에 의해 설정되는 논리적 채널 번호들의 시퀀스를 나타내는 제3 요소;채널 호핑 시퀀스의 오프셋 값을 나타내는 제4 요소;해당 채널 오프셋이 사용되었는지 여부를 나타내는 채널 오프셋 비트맵의 길이를 나타내는 제5 요소; 및채널 오프셋 비트맵을 포함하는 제6 요소;를 포함하는 것을 특징으로 하는 WPAN 디바이스 동작 방법.
- 제 13항에 있어서,상기 시작 요구 프리미티브는 소스 디바이스가 PAN 코디네이터 또는 목적지 디바이스에게 슬롯의 할당 요청을 전송하는 것을 허락하는 프리미티브인 것을 특징으로 하는 WPAN 디바이스의 동작 방법
- WPAN 디바이스가 동작하는 방법에 있어서,비컨 프레임을 생성하는 단계;를 포함하며,상기 비컨 프레임은,채널 적응 모드 및 채널 호핑 모드를 포함하는 채널 다이버시티 모드 중 DSME가 어떤 모드에서 운영되는지를 나타내는 필드를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- 제 15항에 있어서,상기 비컨 프레임은 채널 호핑 기술 필드를 포함하며,상기 생성하는 단계는, 상기 필드가 DSME가 채널 적응 모드를 가리키는 경우 상기 채널 호핑 기술 필드를 포함하지 않은 비컨 프레임을 생성하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- 제 15항에 있어서, 상기 비컨 프레임을 생성하는 단계는,상기 필드가 채널 호핑 모드를 가리키는 경우 채널 호핑 기술 필드를 포함한 비컨 프레임을 생성하는 단계;를 포함하며,상기 채널 호핑 기술 필드는,디바이스의 채널 호핑 오프셋 값을 나타내는 제1 서브필드;이웃 디비아스들의 채널 호핑 오프셋 값의 점유를 나타내는 채널 오프셋 비트맵의 길이를 나타내는 제2 서브필드;상기 채널 오프셋 비트맵을 포함하는 제3 서브필드;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,연결 요청 명령에 대한 연결 응답 명령 프레임을 생성하는 단계;를 포함하며,상기 연결 응답 명령 프레임은 채널 호핑 시퀀스 오프셋 복사를 포함하는 연결 상태 필드를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,연결 요청 명령 프레임을 생성하는 단계;를 포함하며,상기 연결 요청 명령 프레임은 PAN과의 연계를 원하는 비연결 디바이스의 오프셋 값이 설정된 채널 오프셋 필드를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- 제 19항에 있어서,상기 연결 요청 명령 프레임은 용량 정보 필드를 포함하며, 상기 용량 정보 필드는 채널 시퀀스 요청 서브필드를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,연결 응답 명령 프레임을 생성하는 단계;를 포함하며,상기 연결 응답 명령 프레임은 PAN이 비컨 가능 모드 및 채널 호핑 모드에서 동작하는 경우에,PAN에서 사용되는 채널 호핑 시퀀스의 길이를 나타내는 채널 호핑 시퀀스 길이 필드; 및PAN에서 사용되는 채널 호핑 시퀀스를 나타내는 채널 호핑 시퀀스 필드;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,DSME 특징 필드를 포함하는 핸드쉐이크 명령 프레임을 생성하는 단계;를 포함하며,상기 DSME 특징 필드는 채널 적응 모드 또는 채널 호핑 모드를 가리키는 채널 다이버시티 모드 서브필드를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- 제 22항에 있어서,상기 핸드쉐이크 명령 프레임은,채널 호핑 모드의 경우에 해당 DSME 슬롯들의 사용여부를 나타내는 타임슬롯 할당 비트맵을 포함하고,채널 적응 모드의 경우에 타임슬롯 할당 비트맵의 서브 블록의 시작 위치 및 길이를 나타내는 필드를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WAPN 디바이스가 동작하는 방법에 있어서,동일한 채널이 간섭 범위 내의 다른 디바이스들에 의해 사용되는 것을 방지하기 위하여 다른 디바이스들의 채널 오프셋 값과 다른 채널 오프셋 값을 선택하는 단계; 및다수의 슈퍼프레임으로 구성된 멀티 슈퍼프레임의 전체 슬롯들에 걸쳐 채널 오프셋을 반영한 채널 호핑 시퀀스를 반복하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- 제 24항에 있어서,i번째 슬롯 인덱스에 해당하는 채널번호는 다음 수학식에 의해 계산되는 것을 특징으로 하는 WAPN 디바이스의 동작 방법채널번호 = ((DSME 슬롯 인덱스 + 채널 오프셋 값 + 비컨 시퀀스 번호) % (채널 시퀀스 길이)).
- 제 24항에 있어서,멀티 슈퍼프레임내 전체 DSME 슬롯 수는,CAP 리덕션 필드의 값이 '0이면 전체 DSME 슬롯 수 = (7*2^(MO-SO)이고,CAP 리덕션 필드의 값이 '1'이면 전체 DSME 슬롯 수 = (15*2^(MO-SO)이며,여기서 MO는 하나의 멀티 슈퍼프레임으로 간주되는 슈퍼프레임 그룹이 액티브되는 시간 구간의 길이를 나타내며, SO는 슈퍼프레임의 길이를 나타내는 것을 특징으로 하는 WPAN 디바이스의 동작 방법
- WPAN 디바이스가 동작하는 방법에 있어서,비컨 프레임을 수신하는 단계;상기 비컨 프레임의 채널 다이버시티 기술 필드로 PAN 기술자(Descriptor)의 채널 다이버시티 기술 필드의 값을 갱신하는 단계;상기 채널 다비어시티 기술 필드의 값을 확인 프리미티브를 통해 상위 계층으로 전송하는 단계; 및상기 비컨 프레임의 채널 오프셋 서브필드의 값으로 MAC PIB의 채널 오프셋 비트맵을 갱신하는 단계;를 포함하는 것을 특징으로 하는 WAPN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,PAN이 DSEM와 채널 호핑 모드를 사용하는 경우, MAC 서브계층이 요구 프리미티브 내의 DCHDescriptor 파라미터로 DCHDescriptor의 값을 갱신하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,DSME와 채널 호핑 모드가 PAN에서 사용되는 경우, MAC 서브계층이 비컨 프레임의 채널 다이버시티 기술 필드를 설정하는 단계; 및1-홉 이웃 디바이스들에서 사용중인 채널 오프셋을 나타내는 채널 오프셋 비트맵 필드의 값으로 MAC PIB 속성을 설정하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
- WPAN 디바이스가 동작하는 방법에 있어서,물리계층 주파수 호핑을 위한 채널 호핑 시퀀스의 각각과 논리적 채널 번호를 매핑하는 단계; 및PHY-FH는 MAC 호핑 시퀀스의 논리적 채널 번호에 해당하는 채널 호핑 시퀀스를 사용하는 단계;를 포함하는 것을 특징으로 하는 WPAN 디바이스의 동작 방법.
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| US13/319,480 US8837445B2 (en) | 2009-05-08 | 2010-05-07 | Operating method for a WPAN device |
| CN201080030437.XA CN102804683B (zh) | 2009-05-08 | 2010-05-07 | 用于无线个域网装置的操作方法 |
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| KR (1) | KR101683795B1 (ko) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120676408A (zh) * | 2025-08-25 | 2025-09-19 | 杭州华宏通信设备有限公司 | 一种用于nfc设备的数据通信方法及系统 |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101639388B1 (ko) * | 2011-10-18 | 2016-07-13 | 한국전자통신연구원 | 채널 자원 관리 장치 및 방법 |
| JP5557116B2 (ja) * | 2011-10-31 | 2014-07-23 | 横河電機株式会社 | 通信システムおよび通信方法 |
| KR101904745B1 (ko) * | 2012-01-26 | 2018-11-21 | 삼성전자주식회사 | 적어도 하나의 보조 허브를 포함하는 무선 신체 영역 네트워크(wban)에서 통신하는 주 허브, 보조 허브, 센서 노드 및 그 통신 방법 |
| KR101944848B1 (ko) | 2012-03-29 | 2019-02-07 | 스키피오 테크놀로지스 에스.아이 리미티드 | 디지털 통신 오버헤드 및 레이턴시를 감소시키는 프레이밍 스킴 및 방법 |
| US9198167B2 (en) | 2012-07-10 | 2015-11-24 | Electronics And Telecommunications Research Institute | Method of generating networks by utilizing multi-channel |
| US11026170B2 (en) | 2012-08-01 | 2021-06-01 | Texas Instruments Incorporated | Beacon scheduling for wireless networks |
| US9247481B2 (en) * | 2013-02-04 | 2016-01-26 | Electronics And Telecommunications Research Institute | Routing device and method |
| KR102160963B1 (ko) * | 2013-02-04 | 2020-09-29 | 한국전자통신연구원 | 라우팅 장치 및 방법 |
| KR102301827B1 (ko) * | 2013-06-20 | 2021-09-15 | 한국전자통신연구원 | 채널 호핑 시간 다중화 무선 링크 기반 저전력 무선 메시 네트워크 구성을 위한 라우팅 장치 및 방법 |
| US9509570B2 (en) * | 2013-06-20 | 2016-11-29 | Electronics And Telecommunications Research Instit | Routing apparatus and method for configuring low-power wireless mesh network based on channel hopping time-multiplexed wireless link |
| KR102024352B1 (ko) * | 2013-07-31 | 2019-11-04 | 한국전자통신연구원 | 무선 센서 네트워크에서의 채널 관리 방법 및 데이터 전송 방법 |
| KR101941848B1 (ko) * | 2013-08-12 | 2019-01-25 | 삼성전자주식회사 | 수신 노드의 에너지 소비 감소를 위한 전송 노드, 수신 노드 및 그 통신 방법 |
| EP3069531B1 (en) * | 2013-11-13 | 2019-09-25 | Huawei Technologies Co., Ltd. | Controlling data transmissions for machine type communications in a mobile communication system |
| CN104168622B (zh) * | 2014-09-01 | 2018-03-20 | 西安电子科技大学 | 基于信道跳变的分布式多信道握手方法 |
| CN106470096B (zh) | 2015-08-14 | 2021-03-23 | 索尼公司 | 用于无线通信的基站侧和用户设备侧的装置及方法 |
| CN107404374B (zh) * | 2016-05-18 | 2020-07-21 | 韩国电子通信研究院 | 建立与终端关联的方法及装置 |
| US10879954B2 (en) * | 2017-11-14 | 2020-12-29 | Qualcomm Incorporated | Logical channel hopping sequence design |
| US11963216B2 (en) * | 2018-04-04 | 2024-04-16 | Hitachi Energy Ltd | Channel access and transmission scheduling for industrial wireless communications |
| US11582638B2 (en) | 2019-01-03 | 2023-02-14 | Qualcomm Incorporated | Selective relay of data packets |
| WO2025000135A1 (en) * | 2023-06-25 | 2025-01-02 | Nokia Shanghai Bell Co., Ltd | Method and apparatus for intra sub-network transmissions |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6590928B1 (en) | 1997-09-17 | 2003-07-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Frequency hopping piconets in an uncoordinated wireless multi-user system |
| EP1455461A1 (en) | 2003-03-03 | 2004-09-08 | STMicroelectronics N.V. | Method for processing ultra wide band signals in wireless system, and corresponding device |
| KR100678933B1 (ko) * | 2004-05-25 | 2007-02-07 | 삼성전자주식회사 | 조정자 기반의 무선 네트워크 통신 방법과, 백본네트워크와 연결된 조정자 기반의 무선 네트워크들간의통신 방법 |
| US7457620B2 (en) | 2005-07-15 | 2008-11-25 | Cisco Technology, Inc. | Off-channel beacons in a wireless network |
| KR20080092774A (ko) * | 2007-04-13 | 2008-10-16 | 엘지전자 주식회사 | 조정자 기반 네트워크에서 비이콘 프레임의 송신 및/또는수신 메커니즘 |
| KR101255228B1 (ko) * | 2008-11-11 | 2013-04-16 | 한국전자통신연구원 | 무선 애드-혹 네트워크에서 분산채널호핑방법 |
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Cited By (1)
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| CN120676408A (zh) * | 2025-08-25 | 2025-09-19 | 杭州华宏通信设备有限公司 | 一种用于nfc设备的数据通信方法及系统 |
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| KR101683795B1 (ko) | 2016-12-08 |
| US20120069869A1 (en) | 2012-03-22 |
| CN102804683A (zh) | 2012-11-28 |
| KR20100121441A (ko) | 2010-11-17 |
| CN102804683B (zh) | 2015-11-25 |
| WO2010128824A3 (ko) | 2011-02-24 |
| US8837445B2 (en) | 2014-09-16 |
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