WO2012053840A2 - Appareil et procédé de réception de message de radiomessagerie dans un système d'accès sans fil - Google Patents

Appareil et procédé de réception de message de radiomessagerie dans un système d'accès sans fil Download PDF

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Publication number
WO2012053840A2
WO2012053840A2 PCT/KR2011/007836 KR2011007836W WO2012053840A2 WO 2012053840 A2 WO2012053840 A2 WO 2012053840A2 KR 2011007836 W KR2011007836 W KR 2011007836W WO 2012053840 A2 WO2012053840 A2 WO 2012053840A2
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WIPO (PCT)
Prior art keywords
paging
message
cycle
sfh
system information
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PCT/KR2011/007836
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English (en)
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WO2012053840A3 (fr
Inventor
Jeongki Kim
Youngsoo Yuk
Giwon Park
Heejeong Cho
Kiseon Ryu
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Lg Electronics Inc.
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Priority claimed from KR1020110107212A external-priority patent/KR101276865B1/ko
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to US13/880,635 priority Critical patent/US20130210467A1/en
Publication of WO2012053840A2 publication Critical patent/WO2012053840A2/fr
Publication of WO2012053840A3 publication Critical patent/WO2012053840A3/fr

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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
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the present invention relates to a wireless access system and, more particularly, to a method and apparatus for receiving a paging message by a mobile station in an idle mode.
  • M2M Communication or Machine Type Communication (MTC)
  • M2M communication or Machine Type communication (MTC)
  • MTC Machine Type communication
  • M2M communication refers to communication between electronic devices as it puts it. Namely, M2M communication refers to communication between objects. In general, M2M communication refers to wired or wireless communication between electronic devices or between human-controlled devices and machines, but here, it is used to particularly designate wireless communication between electronic devices, namely, between machines or equipment. Also, M2M terminals used in a cellular network have inferior performance or capabilities to those of general terminals.
  • terminals within a cell There are numerous terminals within a cell, and they may be classified according to types, classes, service types, and the like, thereof.
  • M2M communication may be used in various fields such as protection access or connection and surveillance, tracking and discovery, public security (emergency, disaster), payment (vending machine, ticket machine, parking meter), healthcare, remote controlling, smart meter, and the like.
  • the defined connection period (e.g., 10 minutes) is previously agreed between the network operator and an MTC terminal (subscriber), which is sufficiently long to guarantee a completion of normal communication between the MTC terminal and an MTC server.
  • a communication window of 5 to 10 minutes is sufficient for each MTC terminal.
  • the network operator may limit the interval of the communication window.
  • signaling and data traffic of MTC terminals in the communication window are distributed by the predetermined time interval (e.g., by randomizing a start time of each communication window.
  • paging cycle is lengthy and when DL traffic to be transmitted to the M2M terminal is generated during a corresponding paging interval, the DL traffic of the M2M terminal is delayed until the next paging interval.
  • the superframe header may further include an SFH change cycle.
  • the particular point in time may be a superframe number at which the result of a modulo operation of a superframe number and the superframe header change cycle is 0.
  • the method may further include: comparing a length from the particular point in time until to a point in time at which the AI starts with a transmission cycle of the SFH; and when the length from the particular point in time to the point in time at which the AI starts is shorter than the transmission cycle of the SFH, waking up at a corresponding superframe number ahead of the superframe header change cycle starting from the particular point in time.
  • the particular point in time may be a superframe number at which the result of a modulo operation of a superframe number and the superframe header change cycle is 0, and may be a superframe number closest to the AI.
  • the control information may be secondary superframe header (S-SFH) change count.
  • S-SFH secondary superframe header
  • the control information may be received through a primary superframe header information element (P-SFH IE).
  • P-SFH IE primary superframe header information element
  • the method may further include: re-checking whether or not the system information has been changed at the particular point in time; and when the system information has not been changed, changing into a power saving mode.
  • a method for receiving a paging message by a mobile station in an idle mode in a wireless access system including: receiving a control message including a first paging cycle and a second paging cycle shorter than the first paging cycle, the first and second paging cycles being comprised of an unavailable interval (UAI) and an available interval (AI), respectively; and receiving the paging message from the BS during the AI, wherein when the paging message is not received from the BS during the AI of the first paging cycle, the second paging cycle is applied.
  • UAI unavailable interval
  • AI available interval
  • the control message may further include paging offset information indicating a start timing of the AI with respect to each of the first and second paging cycles, or a paging listening interval indicating the length of AI of each of the first and second paging cycles.
  • the control message may further include control information indicating the number of applications of the second paging cycle.
  • the method may further include: repeatedly applying the second paging cycle according to the control information.
  • the method may further include: transmitting a paging confirmation request message in order to check whether or not a paging message has been transmitted to the BS, when the paging message has not been received during the AI of the second paging cycle from the BS; and receiving a response with respect to the paging confirmation request message from the BS.
  • the method may further include: when the response with respect to the paging confirmation request message is a positive response, performing the network (re)entry process with the BS.
  • the control message may be a deregistration request (DREG-REQ) message or a deregistration response (DREG-RSP) message.
  • DREG-REQ deregistration request
  • DREG-RSP deregistration response
  • a mobile station for receiving a paging message in an idle mode including an unavailable interval (UAI) and an available interval (AI) in a wireless access system, including: a wireless communication unit for transmitting and receiving a radio frequency (RF) signal to and from the outside; and a controller connected with the wireless communication unit, wherein the controller checks whether or not system information has been changed during the UAI, and when the system information has been changed according to the checking results, the controller updates the system information during the UAI, and controls the wireless communication unit to receive the paging message from the BS during the AI based on the updated system information.
  • UAI unavailable interval
  • AI available interval
  • the controller may control the mobile station to wake up at a particular point in time during the UAI, and control the wireless communication unit to receive control information indicating whether or not the system information has been changed from the BS, thus confirming whether or not the system information has been changed.
  • the controller may control the wireless communication unit to receive a superframe header (SFH) including the updated system information from the BS.
  • FSH superframe header
  • the SFH may further include an SFH change cycle.
  • the particular point in time may be a superframe number at which the result of a modulo operation of a superframe number and the superframe header change cycle is 0.
  • the controller may compare a length from the particular point in time to a point in time at which the AI starts with a transmission cycle of the SFH, and when the length from the particular point in time to the point in time at which the AI starts is shorter than the transmission cycle of the SFH, the controller may awake the mobile station at a corresponding superframe number ahead of the superframe header change cycle starting from the particular point in time.
  • the particular point in time may be a superframe number at which the result of a modulo operation of a superframe number and the superframe header change cycle is 0, and may be a superframe number closest to the AI.
  • the controller may re-check whether or not the system information has been changed at the particular point in time, and when the system information has not been changed, the controller may control the mobile station to be changed into a power saving mode.
  • a mobile station for receiving a paging message in an idle mode in a wireless access system, including: a wireless communication unit for transmitting and receiving a radio frequency (RF) signal to and from the outside; and a controller connected with the wireless communication unit, wherein the controller controls the wireless communication unit to receive a control message including a first paging cycle and a second paging cycle shorter than the first paging cycle from a base station, each of the first and second paging cycles is comprised of an unavailable interval (UAI) and an available interval (AI), and the controller controls the wireless communication unit to receive the paging message from the BS during the AI, and when the paging message is not received from the BS during the AI of the first paging cycle, the controller controls the mobile station to apply the second paging cycle.
  • UAI unavailable interval
  • AI available interval
  • the problem in which the M2M MS fails to receive a paging message during an AI can be solved, thus preventing delay of DL traffic.
  • a shorter paging cycle can be applied, thus preventing delay of DL traffic and power consumption of the M2M MS.
  • FIG. 1 is a view showing a paging procedure in an idle mode.
  • FIG. 2 is a conceptual view of a wireless communication system to which an embodiment of the present disclosure can be applicable.
  • FIG. 3 is a flow chart illustrating the process of a method for receiving a paging message according to a first embodiment of the present disclosure.
  • FIG. 4 is a view showing a process of updating system information during an unavailable interval of an idle mode according to a first embodiment of the present disclosure.
  • FIG. 5 is a view showing another process of updating system information during an unavailable interval in an idle mode according to a first embodiment of the present disclosure.
  • FIG. 6 is a flow chart illustrating the process of a method for receiving a paging message by an M2M mobile station (MS) according to a second embodiment of the present disclosure.
  • FIG. 8 is a flow chart illustrating the process of another method for receiving a paging message in the idle mode according to the second embodiment of the present disclosure.
  • FIG. 10 is a schematic block diagram of a mobile station and a base station in a wireless access system to which an embodiment of the present disclosure can be applicable.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier-frequency division multiple access
  • CDMA may be implemented as a radio technology such as UTRA (Universal Terrestrial Radio Access) or CDMA2000.
  • TDMA may be implemented as a radio technology such as GSM (Global System for Mobile communications)/GPRS (General Packet Radio Service)/EDGE (Enhanced Data Rates for GSM Evolution).
  • GSM Global System for Mobile communications
  • GPRS General Packet Radio Service
  • EDGE Enhanced Data Rates for GSM Evolution
  • OFDMA may be implemented as a radio technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (Evolved UTRA), and the like.
  • IEEE 802.16m is an advancement of IEEE 802.16e, providing backward compatibility with an IEEE 802.16e-based system.
  • 802.16p provides a communication standard for supporting machine type communication (MTC).
  • MTC machine type communication
  • UTRA is a part of UMTS (Universal Mobile Telecommunications System).
  • 3GPP (3rd Generation Partnership Project) LTE (long term evolution) is part of E-UMTS (Evolved UMTS) using E-UTRA, which employs OFDMA in downlink and SC-FDMA in uplink.
  • LTE-A Advanced is an advancement of 3GPP LTE.
  • first and second may be used to describe various components, such components must not be understood as being limited to the above terms.
  • the above terms are used only to distinguish one component from another.
  • a first component may be referred to as a second component without departing from the scope of rights of the present invention, and likewise a second component may be referred to as a first component.
  • the term “and/or” encompasses both combinations of the plurality of related items disclosed and any item from among the plurality of related items disclosed.
  • FIG. 1 is a view showing a paging procedure in an idle mode.
  • a mobile station transmits a deregistration request (DREG-REQ) message to a base station (BS) in order to request deregistration with the BS.
  • DREG-REQ deregistration request
  • the BS transmits a deregistration response (DREG-RSP) message to the MS (S120).
  • DREG-RSP deregistration response
  • the DREG-RSP message includes paging information.
  • MS’s entering the idle mode may also be initiated by a request from the BS.
  • the BS transmits the DREG-RSP message to the MS.
  • the paging information may include a paging cycle, a paging offset, a paging group identifier (PGID), a paging listening interval value, and the like.
  • the MS When the MS receives the DREG-RSP, it enters an idle mode with reference to the paging information.
  • the idle mode has paging cycles, and one paging cycle may include an available interval and an unavailable interval.
  • the available interval is the same concept as a paging listening interval and a paging interval.
  • the paging offset indicates a point in time (e.g., a frame or a subframe) at which a paging interval in a paging cycle starts.
  • the paging group identifier (PGID) is an identifier (ID) of a paging group allocated to an MS.
  • the paging information may include paging message offset information.
  • the paging message offset information indicates a point in time at which a paging message is transmitted from the BS.
  • the MS may receive a paging message transmitted to the MS itself during the AI (namely, the paging listening interval) by using the paging information.
  • the paging message may be transmitted through the BS or a paging controller.
  • the SFH is comprised of a primary SFH and a secondary SFH, and includes system information.
  • the S-SFH is comprised of three subpackets S-SFH SP1, S-SFH SP2, and S-SFH SP3, and the three subpackets have different cycles and are transmitted at different points in time.
  • S-SFH application hold indicator 1 Indicates the S-SFH change count value used to determine the S-SFH SPx IE content to apply in this superframe.0b0:Use S-SFH SPx IE content associated with the current S-SFH change count0b1:Use S-SFH SPx IE content associated with(the current S-SFH change count-1) modulo 16 Reserved 3 The reserved bits are for future extension.
  • the MS receives a P-SFH IE (primary superframe header information element) and checks an S-SFH change count field. Whenever the S-SFH IE information is updated, the BS increases the value of the S-SFH change count field by 1 each time.
  • P-SFH IE primary superframe header information element
  • the MS receives the S-SFH SP IE during a next period in which the S-SFH SP IE to be updated is transmitted, and updates it.
  • the MS When the MS receives the S-SFH SP IE to be updated, the MS first checks a start superframe offset where new SP information is used. And then, the MS updates the S-SFH SP IE at the superframe position corresponding to the start superframe offset.
  • FIG. 2 is a conceptual view of a wireless communication system to which an embodiment of the present disclosure can be applicable.
  • the wireless communication system is widely disposed to provide various communication services such as voice, packet data, or the like.
  • the wireless communication system may include a mobile station (MS) 10 and a base station (BS) 20.
  • the MS may be fixed or mobile and may be called by other names such as UE (User Equipment), UT (User Terminal), SS (Subscriber S ⁇ tation), wireless device), AMS (Advanced Mobile Station), or the like.
  • the MS 10 may have a concept of MTC or M2M terminal.
  • the BS 20 generally refers to a fixed station communicating with the MS 10, and may be called by other names such as NodeB, BTS (Base Transceiver System), access point.
  • BTS Base Transceiver System
  • One or more cells may exist in the single BS 20.
  • the wireless communication system may be an OFDM (Orthogonal Frequency Division Multiplexing)/OFDMA (Orthogonal Frequency Division Multiple Access)-based system.
  • OFDM Orthogonal Frequency Division Multiplexing
  • OFDMA Orthogonal Frequency Division Multiple Access
  • OFDM uses multiple orthogonal subcarriers. OFDM uses orthogonal characteristics between IFFT (inverse fast Fourier Transform) and FFT (fast Fourier Transform).
  • a transmitter performs IFFT on data and transmits the same.
  • a receiver performs FFT on received signal to restore the original data.
  • the transmitter uses IFFT in order to couple multiple subcarriers, and the receiver uses corresponding FFT in order to separate multiple subcarriers.
  • FIG. 3 is a flow chart illustrating the process of a method for receiving a paging message according to a first embodiment of the present disclosure.
  • the M2M MS checks whether or not system information transmitted through an SFH during an UAI in a paging cycle has been changed (S310).
  • the M2M MS wakes up at a particular point in time during the UAI and receives control information (e.g., S-SFH change count) indicating whether or not the system information has been changed, from the BS.
  • control information e.g., S-SFH change count
  • the control information is transmitted through a P-SFH IE.
  • the M2M MS updates the system information during the UIA (S320).
  • the processing of updating the system information is performed upon receiving updated system information from the BS, and the updated system information is transmitted from the BS through an SFH, in particular, S-SFH.
  • the M2M MS receives a paging message from the BS (or a paging controller) during the AI in the paging cycle (S330).
  • the M2M MS performs a network re-entry process with the BS.
  • FIG. 4 is a view showing a process of updating system information during an unavailable interval of an idle mode according to a first embodiment of the present disclosure.
  • the M2M MS wakes up before the AI or the paging listening interval 420, namely, at a particular point in time during the UAI 410, to check whether or not the system information transferred through the SFH has been changed (S410).
  • the M2M MS Upon checking, when the system information has been changed, the M2M MS updates the system information before the paging listening interval (S420) and receives a paging message from the BS or the paging controller during the paging listening interval.
  • the particular point in time during the UAI is a superframe number at which a modulo operation result of the superframe number and SFH change cycle is 0.
  • FIG. 5 is a view showing another process of updating system information during an unavailable interval in an idle mode according to a first embodiment of the present disclosure.
  • the M2M MS may not be able to update the changed system information during the UAI.
  • the MWM MS Upon checking, when the system information has been changed, the MWM MS updates the system information stored in the M2M MS (S530). Similarly, the process of updating the system information by the M2M MS is performed upon receiving the changed system information from the BS.
  • the M2M MS checks whether or not the system information has been changed at the superframe number 510 after the SFN change cycle starting from the superframe number 520 (S520).
  • the M2M MS may be changed into a power saving mode (or power down) during the remaining UAI.
  • the second embodiment provides a method for receiving a paging message by the M2M MS in an idle mode by allocating multiple (or a plurality of) paging cycles to the M2M MS by the BS.
  • FIG. 6 is a flow chart illustrating the process of a method for receiving a paging message by an M2M terminal according to a second embodiment of the present disclosure.
  • the M2M MS receives a control message including first and second paging cycles (S610).
  • the second paging cycle is shorter than the first paging cycle.
  • the first and second paging cycles are comprised of a UAI and an AI, respectively, the AI may be expressed as a paging interval or a paging listening interval.
  • the control message may be received through an initial network entry process (RNG-REQ/RSP or REG-REQ/RSP) or may be received through an idle mode entry process, i.e., a deregistration process (DREG-REQ/RSP) between the M2M MS and the BS.
  • the control message may be a ranging request (RNG-REQ) message, a ranging response (RNG-RSP) message, a registration request (REG-REQ) message, a registration response (REG-RSP) message, a deregistration request (DREG-REQ) message, or a deregistration response (DREG-RSP) message.
  • control message may further include at least one of paging offset information indicating a starting point in time of the AI with respect to each of the first and second paging cycles, paging listening interval information indicating the length of an AI of each of the first and second paging cycles, and control information indicating the number of applications of the second paging cycle.
  • the M2M MS When the M2M MS enters the idle mode, it first applies the first paging cycle. Namely, the M2M MS performs monitoring to receive a paging message from the BS during the AI of the first paging cycle (S620).
  • the M2M terminal When the M2M MS receives a paging message during the AI of the first paging cycle and the received paging message corresponds to paging the M2M MS itself, the M2M terminal performs a network reentry procedure with the BS.
  • the M2M MS performs monitoring to receive a paging message during the AI of the second paging cycle.
  • the M2M MS may repeatedly apply the second paging cycle, after the first paging cycle, according to the control information, namely, by the number of applications of the second paging cycle.
  • the M2M MS may transmit a message for checking whether or not the paging message has been transmitted, to the BS.
  • PC paging cycle
  • the PC 2 has a shorter paging cycle than that of the PC 1.
  • the paging information allocated to the M2M MS may be transferred to the M2M MS through the initial network entry process or through deregistration MAC messages (e.g., AAI-DREG-REQ/RSP) used in the processing of entering an idle mode.
  • deregistration MAC messages e.g., AAI-DREG-REQ/RSP
  • the BS may allocate two paging offsets, instead of two paging cycles, to the M2M MS.
  • the PC_2_Num is a value indicating how many times the paging cycle 2 should be applied to receive a paging message when the M2M MS fails to receive the paging message during the paging interval of the paging cycle 1.
  • the M2M MS When the M2M MS fails to receive the paging message during the first paging listening interval of the PC 1, the M2M MS applies the PC 2 and waits indicating how many times the paging cycle 2 should be applied to receive a paging message when the M2M MS fails to receive the paging message during the paging interval of the paging cycle 1.
  • the M2M MS When the M2M MS fails to receive the paging message during the first paging listening interval of the PC 1, the M2M MS applies the PC 2 and waits to receive the paging message again from the BS.
  • the BS determines that the corresponding M2M MS has failed to receive the paging message.
  • the BS may transmit the paging message again to the M2M MS during the paging listening interval of the short paging cycle (PC) 2.
  • PC short paging cycle
  • This process is performed by a predetermined number of times (e.g., 2 to 4 times) between the BS and the M2M MS until when the corresponding M2M MS can properly receive the paging message.
  • the BS fails to receive a positive response (e.g., a network reentry or location update) from the corresponding M2M MS, the BS may further apply the paging cycle 2 until when it receives the positive response from the M2M MS.
  • a positive response e.g., a network reentry or location update
  • the M2M MS fails to receive the paging message from the BS at the PC1 and during the first paging interval of the PC2 (S720, S730), and receives the paging message from the BS during the second paging interval (S740).
  • the M2M MS since the M2M MS receives a paging message for awaking the corresponding M2M MS during the second paging interval of the PC 2, the corresponding M2M MS performs a network reentry procedure (S750).
  • the M2M MS transmits a paging confirmation request to the BS (or the paging controller) in order to confirm whether or not positive paging message has been transmitted during the paging interval of the paging cycle (S860).
  • FIG. 9 is a flow chart illustrating the process of another method for receiving a paging message in the idle mode according to the second embodiment of the present disclosure.
  • paging offset indicates a point in time at which a paging message is transmitted from the BS.
  • the paging confirmation request message and the response message are messages transmitted in the idle mode of the M2M MS, so an AAI-RNG-REQ message and an AAI-RNG-RSP message used in a ranging process may be used.
  • the M2M MS may transmit the AAI-RNG-REQ after a ranging process to inform the BS or the paging controller that it has failed to receive a paging message.
  • the BS or the paging controller may transmit the AAI-RNG-RSP message to the M2M MS to inform the M2M MS of the presence of DL data.
  • the BS When the ranging purpose indication indicates the paging confirmation request, the BS includes whether or not the DL data exists in the AAI-RNG-RSP message and transmits the same to the M2M MS.
  • each embodiment may not be implemented as a single but implemented in combination with one another when the need arises.
  • Such combinations can be easily implemented by those skilled in the art reading this specification and the combinations thereof will not be described below in detail. However, even if not described, it should be understood that the combinations thereof will not be excluded from the present invention, and still fall within the scope of the present invention.
  • a method according to the embodiments of the present disclosure may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or the like.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • processors controllers, microcontrollers, microprocessors, or the like.
  • a method according to the embodiments of the present disclosure may be implemented in the form of a module, procedure, function, or the like, which performs the functions or operations as described above.
  • the software codes may be stored in a memory unit to be driven by a processor.
  • the memory unit may be located at an inner or outer portion of the processor to send and/or receive data to and/or from the processor by various publicly-known means.
  • the method according to the present invention as described above may be implemented by software, hardware, or a combination of both.
  • the method according to the present invention may be stored in a storage medium (for example, internal memory, flash memory, hard disk, and so on), and may be implemented through codes or instructions in a software program that can be performed by a processor (for example, internal microprocessor). It will be described with reference to FIG. 13.
  • a mobile station 10 may include a controller 11, a memory 12, and a radio frequency (RF) unit 13.
  • RF radio frequency
  • the controller 11 implements the proposed functions, processes and/or methods.
  • the layers of the radio interface protocol may be implemented by the controller 11.
  • the memory 12, which is connected to the controller 11, may store protocols or parameters for performing wireless communication.
  • the memory 12 may store mobile station driving systems, applications, and general files.
  • the RF unit 13, which is connected to the controller 11, may transmit and receive radio signals.
  • the display unit may display various types of information of the mobile station, and well-known elements such as a liquid crystal display (LCD), organic light emitting diodes (OLED), or the like may be used.
  • the user interface unit may be implemented in combination of well-known user interfaces such as a keypad, a touch screen, or the like.
  • a base station 20 may include a controller 21, a memory 22, and a radio frequency (RF) unit 23.
  • RF radio frequency
  • the controller 21 implements the proposed functions, processes and/or methods.
  • the layers of the radio interface protocol may be implemented by the controller 21.
  • the RF unit 23, which is connected to the controller 21, may transmit and receive radio signals.
  • the memories 12 and 22 may be located within or outside the controllers 11 and 21, respectively, and may be connected to the controllers 11 and 21 through well-known various means, respectively.

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Abstract

La présente invention concerne un procédé de réception d'un message de radiomessagerie par une station mobile en mode veille comprenant un intervalle indisponible (UAI) et un intervalle disponible (AI) dans un système d'accès sans fil. Ce procédé consiste à vérifier s'il y a eu ou non une modification des informations système au cours de l'intervalle indisponible; lorsque les informations système ont été modifiées au cours de l'intervalle indisponible, mettre à jour les informations système au cours de l'intervalle indisponible et procéder à la réception du message de radiomessagerie depuis une station de base (BS) au cours de l'intervalle disponible.
PCT/KR2011/007836 2010-10-20 2011-10-20 Appareil et procédé de réception de message de radiomessagerie dans un système d'accès sans fil WO2012053840A2 (fr)

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Application Number Priority Date Filing Date Title
US13/880,635 US20130210467A1 (en) 2010-10-20 2011-10-20 Apparatus and method for receiving paging message in wireless access system

Applications Claiming Priority (4)

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US39478010P 2010-10-20 2010-10-20
US61/394,780 2010-10-20
KR1020110107212A KR101276865B1 (ko) 2010-10-20 2011-10-19 무선 접속 시스템에서 페이징 메시지 수신 방법 및 장치
KR10-2011-0107212 2011-10-19

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