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USRE47736E1 - Method and apparatus for supporting discontinuous reception operation in mobile communication system - Google Patents

Method and apparatus for supporting discontinuous reception operation in mobile communication system Download PDF

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Publication number
USRE47736E1
USRE47736E1 US15/177,995 US201115177995A USRE47736E US RE47736 E1 USRE47736 E1 US RE47736E1 US 201115177995 A US201115177995 A US 201115177995A US RE47736 E USRE47736 E US RE47736E
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Prior art keywords
sfn
cycle
drx cycle
cell
drx
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Inventor
Sang-Bum Kim
Sung-Ho Choi
Soeng-Hun Kim
Kyeong-In Jeong
Jung-Soo Jung
Chae-Gwon LIM
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Priority claimed from PCT/KR2011/000023 external-priority patent/WO2011087233A2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission
    • 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
    • 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
    • Y02D70/126—
    • Y02D70/20—

Definitions

  • the present invention relates to a mobile communication system. More particularly, the present invention relates to a method and apparatus for supporting a Discontinuous Reception (DRX) operation in a mobile communication system.
  • DRX Discontinuous Reception
  • FIG. 1 is a block diagram illustrating a communication scenario for machine-type communication according to the related art.
  • machine-type communication devices 105 are connected with a wireless provider network 110 .
  • the machine-type communication devices 105 may be defined as various unattended devices, including as meters, automatic vending machines, and the like.
  • the machine-type communication devices 105 may have characteristics different from those of the existing wireless User Equipments (UEs) in several respects.
  • the machine-type communication devices 105 may have different characteristics depending on the types thereof.
  • One cell may include numerous machine-type communication devices 105 .
  • a machine-type communication server 115 which has information on the machine-type communication devices 105 , functions not only to perform authentication, but also to gather and deliver information, which is collected from the machine-type communication devices 105 .
  • the machine-type communication server 115 delivers the information to a machine-type communication user 120 .
  • the machine-type communication server 115 may exist inside or outside of the wireless provider network 110 .
  • the machine-type communication user 120 is a final user who needs information delivered from the machine-type communication devices 105 .
  • the machine-type communication has characteristics different from those of the existing wireless communication. Also, the characteristics of the machine-type communication are classified in various ways depending on the use purposes. For example, machine-type communication devices requiring communication only a few times a day regardless of time have a time-tolerant characteristic; and machine-type communication devices, which are installed at fixed positions without mobility and are configured to collect and transmit specific information, have a low mobility characteristic. Wireless providers have to provide services by taking characteristics of such various machine-type communications and the coexistence of machine-type communication devices and the existing UEs into consideration.
  • the 3GPP SA1 WG defines an extra low power consumption mode, in which machine-type communication devices may be set to use low power.
  • DRX Discontinuous Reception
  • a UE performs a reception operation in order to receive a paging signal from an evolved Node B (eNB).
  • eNB evolved Node B
  • a paging signal is not a frequently transmitted signal. Consequently, if the UE performs a reception operation even while the eNB does not transmit a paging signal, power loss becomes large. Therefore, in order to reduce power consumption, it is possible to periodically perform a reception operation only during specific time intervals so as to attempt to receive a paging signal, which is called a Discontinuous Reception (DRX).
  • DRX Discontinuous Reception
  • Equation 1 the DRX operations of UEs being in an idle state are achieved by Equation 1 below.
  • a System Frame Number (SFN) increases by one every radio frame.
  • SFN mod T (T div N)*(U_ID mod N) (1)
  • SFN has 10 bits (i.e., MSB 8 bits explicit, and LBS 2 bits implicit), and “T” denotes a DRX cycle of a UE.
  • T is a value, which is included in a System Information Block Type 2 (SIB2) and is provided from an eNB, and may be, for example, rf32, rf64, rf128, or rf256.
  • N is “min (T, nB),” wherein “nB” is a value which is included in the SIB2 and is provided from the eNB, and may be, for example, 4T, 2T, T, T/2, T/4, T/8, T/16, or T/32.
  • UE_ID is International Mobile Station Identity (IMSI) mod 1024, and 8 bits of a Master Information Block (MIB) of a Physical Broadcast CHannel (PBCH) represent an SFN.
  • IMSI International Mobile Station Identity
  • MIB Master Information Block
  • PBCH Physical Broadcast CHanne
  • FIG. 2 is a view showing a conception of a paging occasion in a conventional LTE technology according to the related art.
  • an SFN increases by one every radio frame (see reference numeral 205 ).
  • the SFN has a cycle of 1024, and is set to zero (see reference numeral 210 ).
  • a paging signal having the same pattern is repeated every SFN cycle (see reference numeral 215 ).
  • UEs corresponding to machine-type communication devices are expected to less frequently receive a paging signal than general UEs. For example, tracking-related devices will communicate with an eNB only a few times a day. Therefore, when a DRX cycle is set to be very long, it is possible to remarkably reduce power consumption due to reception operations.
  • the DRX cycle is limited by the length of an SFN. When the length of an SFN is 1024, the DRX cycle cannot exceed 1024.
  • a need exists for a method and apparatus for a Discontinuous Reception (DRX) operation in a mobile communication system.
  • a need also exists for a method and apparatus for implementing a long SFN to extend the DRX cycle of a machine-type communication device in a mobile communication system.
  • an aspect of the present invention is to provide a method and apparatus for a Discontinuous Reception (DRX) operation in a mobile communication system.
  • DRX Discontinuous Reception
  • Another aspect of the present invention is to provide a method and apparatus for implementing a long System Frame Number (SFN) to extend the DRX cycle of a machine-type communication device in a mobile communication system.
  • SFN System Frame Number
  • Another aspect of the present invention is to provide a DRX operation method and apparatus for Machine-Type Communication (MTC), which is compatible with the existing DRX, in a mobile communication system.
  • MTC Machine-Type Communication
  • a method for supporting a Discontinuous Reception (DRX) operation in a Node B in a mobile communication system includes defining a second System Frame Number (SFN) where one cycle of a first SFN corresponds to one bit, transmitting information on the second SFN to a User Equipment (UE), determining a second SFN which is used to transmit a paging signal to the UE, determining a first SFN which is used to transmit the paging signal in the determined second SFN, and transmitting the paging signal to the UE at the determined first SFN.
  • SFN System Frame Number
  • UE User Equipment
  • an apparatus for supporting a Discontinuous Reception (DRX) operation in a Node B in a mobile communication system includes a transceiver for defining a second System Frame Number (SFN) where one cycle of a first SFN corresponds to one bit, and for transmitting information on the second SFN to a User Equipment (UE), and a controller for determining a second SFN which is used to transmit a paging signal to the UE, for determining a first SFN which is used to transmit the paging signal in the determined second SFN, and for controlling the transceiver to transmit the paging signal to the UE at the determined first SFN.
  • SFN System Frame Number
  • UE User Equipment
  • a method for supporting a Discontinuous Reception (DRX) operation in a User Equipment (UE) in a mobile communication system includes receiving, from a Node B, information on a second System Frame Number (SFN), where one cycle of a first SFN corresponds to one bit, monitoring the first SFN and the second SFN every cycle of the first SFN, determining whether the second SFN includes a paging signal, and determining whether the first SFN corresponding to the second SFN includes the paging signal when the second SFN includes the paging signal, and identifying the paging signal through the first SFN when the first SFN includes the paging signal.
  • SFN System Frame Number
  • an apparatus for supporting a Discontinuous Reception (DRX) operation in a User Equipment (UE) in a mobile communication system includes a transceiver for receiving, from a Node B, information on a second System Frame Number (SFN), where one cycle of a first SFN corresponds to one bit, and a controller for monitoring the first SFN and the second SFN every cycle of the first SFN, determining whether the second SFN includes a paging signal, determining whether the first SFN corresponding to the second SFN includes the paging signal when the second SFN includes the paging signal, and for identifying the paging signal through the first SFN when the first SFN includes the paging signal.
  • SFN System Frame Number
  • a method for supporting a Discontinuous Reception (DRX) operation in a User Equipment (UE) in a mobile communication system includes receiving system information which includes a cell-specific DRX cycle from a Node B, transmitting an attach request message, which includes a UE-specific DRX cycle and an indication for selecting a DRX cycle of a long cycle, to a Mobility Management Entity (MME), selecting a longer cycle of the cell-specific DRX cycle and the UE-specific DRX cycle when receiving an attach response message from the MME, and receiving a paging message from the Node B in the selected DRX cycle.
  • MME Mobility Management Entity
  • an apparatus for supporting a Discontinuous Reception (DRX) operation in a User Equipment (UE) in a mobile communication system includes a transceiver for receiving system information which includes a cell-specific DRX cycle from a Node B, and for transmitting an attach request message to a Mobility Management Entity (MME), the attach request message including a UE-specific DRX cycle and an indication for selecting a DRX cycle of a long cycle, and a controller for selecting a longer cycle of the cell-specific DRX cycle and the UE-specific DRX cycle when receiving an attach response message from the MME, and controlling the transceiver to receive a paging message from the Node B in the selected DRX cycle.
  • MME Mobility Management Entity
  • a method for supporting a Discontinuous Reception (DRX) operation in a Node B in a mobile communication system includes transmitting system information which includes a cell-specific DRX cycle to a User Equipment (UE), receiving a UE-specific DRX cycle and an indication for selecting a DRX cycle of a long cycle from a Mobility Management Entity (MME), selecting a longer cycle of the cell-specific DRX cycle and the UE-specific DRX cycle, and transmitting a paging message to the UE in the selected DRX cycle.
  • system information which includes a cell-specific DRX cycle to a User Equipment (UE), receiving a UE-specific DRX cycle and an indication for selecting a DRX cycle of a long cycle from a Mobility Management Entity (MME), selecting a longer cycle of the cell-specific DRX cycle and the UE-specific DRX cycle, and transmitting a paging message to the UE in the selected DRX cycle.
  • MME Mobility Management Entity
  • a method for supporting a Discontinuous Reception (DRX) operation in a User Equipment (UE) in a mobile communication system includes determining whether a cell on which the UE is currently camping corresponds to a cell supporting a DRX cycle of a long cycle, selecting a longer DRX cycle of a cell-specific DRX cycle and a UE-specific DRX cycle when the cell on which the UE is currently camping supports the DRX cycle of a long cycle, and receiving a paging message from a Node B of the cell, on which the UE is camping, in the selected DRX cycle.
  • DRX Discontinuous Reception
  • an apparatus for supporting a Discontinuous Reception (DRX) operation in a User Equipment (UE) in a mobile communication system includes a controller for determining whether a cell on which the UE is currently camping corresponds to a cell supporting a DRX cycle of a long cycle, and for selecting a longer DRX cycle of a cell-specific DRX cycle and a UE-specific DRX cycle when the cell on which the UE is currently camping supports the DRX cycle of a long cycle, and a transceiver for receiving a paging message from a Node B of the cell, on which the UE is camping, in the selected DRX cycle.
  • a controller for determining whether a cell on which the UE is currently camping corresponds to a cell supporting a DRX cycle of a long cycle, and for selecting a longer DRX cycle of a cell-specific DRX cycle and a UE-specific DRX cycle when the cell on which the UE is currently camping supports the DRX cycle of a long
  • a method for supporting a Discontinuous Reception (DRX) operation in a Mobility Management Entity (MME) in a mobile communication system includes receiving a request for a DRX cycle of a long cycle from a User Equipment (UE), determining whether a cell on which the UE is camping supports a DRX cycle of a long cycle, and transmitting a paging message to a Node B of the cell, on which the UE is camping, in a UE-specific DRX cycle when the cell on which the UE is camping supports a DRX cycle of a long cycle.
  • UE User Equipment
  • an apparatus for supporting a Discontinuous Reception (DRX) operation in a Mobility Management Entity (MME) in a mobile communication system includes a transceiver for receiving a request for a DRX cycle of a long cycle from a User Equipment (UE), and a controller for determining whether a cell on which the UE is camping supports a DRX cycle of a long cycle, and for controlling the transceiver to transmit a paging message to a Node B of the cell, on which the UE is camping, in a UE-specific DRX cycle when the cell on which the UE is camping supports a DRX cycle of a long cycle.
  • UE User Equipment
  • the DRX cycle of a machine-type communication device is lengthened in a mobile communication system, so that it is possible to reduce the power consumption due to reception operations.
  • the length of an SFN is first extended in order to lengthen a DRX cycle in a mobile communication system, thereby exerting no influence on the paging operations of the existing UEs.
  • FIG. 1 is a block diagram illustrating a communication scenario for machine-type communication according to the related art
  • FIG. 2 is a view showing a conception of a paging occasion in a Long Term Evolution (LTE) technology according to the related art;
  • LTE Long Term Evolution
  • FIG. 3 is a view showing a conception of a paging occasion according to a first exemplary embodiment of the present invention
  • FIG. 4 is a flowchart illustrating the operation of a machine-type communication device according to the first exemplary embodiment of the present invention
  • FIG. 5 is a block diagram illustrating the configuration of a User Equipment (UE) according to the first exemplary embodiment of the present invention
  • FIG. 6 is a flowchart illustrating the operation of an evolved Node B (eNB) according to the first exemplary embodiment of the present invention
  • FIG. 7 is a block diagram illustrating the configuration of an eNB according to an exemplary embodiment of the present invention.
  • FIG. 8 is a flow diagram illustrating a procedure for applying a UE-specific Discontinuous Reception (DRX) cycle according to a second exemplary embodiment of the present invention
  • FIG. 9 is a flow diagram illustrating the operations of a UE and an Mobility Management Entity (MME) according to a third exemplary embodiment of the present invention.
  • MME Mobility Management Entity
  • FIG. 10 is a flowchart illustrating the operation of the UE according to the third exemplary embodiment of the present invention.
  • FIG. 11 is a flowchart illustrating the operation of the MME according to the third exemplary embodiment of the present invention.
  • Exemplary embodiments of the present invention provide a method and an apparatus for performing a Discontinuous Reception (DRX) operation based on a DRX cycle.
  • DRX Discontinuous Reception
  • the first exemplary embodiment of the present invention provides a method for implementing a long System Frame Number (SFN) in order to extend a DRX cycle of a machine-type communication device, and a method for supporting a DRX operation compatible with existing DRX in a mobile communication system.
  • SFN System Frame Number
  • an evolved Node B In order to extend the length of an SFN to extend a DRX cycle of a machine-type communication device, an evolved Node B (eNB) must additionally transmit SFN bits to the machine-type communication device, and the transmission methods are as follows.
  • MIB Master Information Block
  • SIB System Information Block
  • the MIB includes necessary information, such as a downlink frequency band, a Physical Hybrid ARQ Indicator CHannel (PHICH) configuration information, and an SFN.
  • the MIB contains 10 unused spare bits, which may be used to extend the length of an SFN. While general UEs use the existing SFN of 8 bits, machine-type communication devices can use not only the existing SFN of 8 bits but also extended SFN bits. Accordingly, while exerting no influence on the DRX operations of general UEs, machine-type communication devices can perform a DRX operation in a longer cycle.
  • the SIB has no resource limit in transmitting SFN bits, as compared with the MIB.
  • SFN bits of an MIB and SFN bits added to the SIB together into consideration it is possible to express an SFN with a longer length.
  • General UEs take only SFN bits of an MIB into consideration, and machine-type communication devices take the SFN bits of the MIB and the SFN bits added to the SIB together into consideration.
  • the added SFN bits represent a value which is obtained by increasing by one every existing one SFN cycle (or every multiple of an SFN cycle, e.g., 1 ⁇ 2 SFN cycle, 3 SFN cycle, etc.). Through the value represented as above, it is possible to express an SFN length longer than the existing SFN length.
  • SFN bits to be added may be included in a new SIB for a machine-type communication device.
  • additional SFN bits are transmitted in a SIB that is not frequently transmitted (e.g., preference of SIB2 to SIB 1), or when additional SFN bits are transmitted only in an SIB transmitted in a specific radio frame, it is possible to reduce an overhead due to the additional SFN bits.
  • the first exemplary embodiment of the present invention proposes a method for extending a DRX cycle, and for simultaneously receiving a paging signal several times during a predetermined DRX cycle in order to increase the probability of reception success of the paging signal.
  • a paging occasion is determined through a procedure including two steps.
  • First step determining additional SFN bits to transmit a paging signal for a machine-type communication device
  • Second step determining an SFN at which a paging signal is to be transmitted in the additional SFN bits determined in the first step.
  • additional SFN bits to transmit a paging signal are determined.
  • the additional SFN bits have a value increased by one every SFN cycle.
  • a value expressed by the additional SFN bits is defined as a Super SFN (SSFN). Equation 2 below is used to find an SSFN at which a paging signal is to be transmitted.
  • SSFN mod T M (T M div N M )*(UE_ID mod N M ) (2)
  • N M is min (T M , nBM), and T M and nB M are values provided from an eNB and may be included in an SIB2.
  • UE_ID is an IMSI mod 1024 (or MTC device group ID mode 1024), and can be derived from the same IMSI module operation as the general UE.
  • the UE_ID may be expressed by a group ID.
  • FIG. 3 is a view showing a conception of a paging occasion according to the first exemplary embodiment of the present invention.
  • an SSFN 305 increases by one every SFN cycle of 1024. Based on Equation 2, an SSFN 315 at which a paging signal is to be transmitted is determined. An SFN 310 increases by one every radio frame.
  • an eNB transmits a paging signal 320 based on Equation 1.
  • FIG. 4 is a flowchart illustrating the operation of a UE according to the first exemplary embodiment of the present invention.
  • the UE according to the first embodiment of the present invention is a machine-type communication device.
  • a UE monitors an SSFN and an SFN. For example, the UE monitors the SSFN and the SFN at the same time by additional SFN bits in an MIB, by additional SFN bits in an existing SIB, or by additional SFN bits in a new SIB, as described above.
  • the UE is aware of a time interval of one SFN and SSFN in step 410 , it is unnecessary to perform a real-time monitoring, and it is enough to occasionally perform a monitoring so as to reduce the power consumption.
  • step 415 the UE determines whether the monitored current SSFN satisfies Equation 2.
  • a paging signal can be transmitted in the current SSFN. Accordingly, the UE proceeds to step 420 in order to prepare the performance of a DRX.
  • the UE returns to step 410 .
  • step 420 the UE determines whether the monitored current SFN satisfies Equation 1.
  • the current SFN satisfies Equation 1
  • the UE returns to step 410 .
  • step 425 the UE decodes a PDCCH, and performs a DRX when a decoding-resultant PDCCH includes a paging signal.
  • FIG. 5 is a block diagram illustrating the configuration of a UE according to the first exemplary embodiment of the present invention.
  • a UE 500 includes a transceiver 505 , a controller 510 , and a buffer 515 .
  • the transceiver 505 receives an MIB, an SIB, or a new SIB from an eNB, and monitors an SSFN and an SFN. As an example, the monitoring is controlled by the controller 510 .
  • the SFN increases by one every radio frame of 10 ms, and the SSFN increases by one every SFN cycle having a length of 1024, which the UE 500 is aware of in advance. Therefore, the transceiver 505 in the UE 500 needs not decode a PBCH and a PDCCH every time in order to receive an MIB or SIB, and has only to occasionally monitor the PBCH and PDCCH.
  • the controller 510 determines whether the monitored current SFN and SSFN satisfy Equation 1 and Equation 2, respectively, and calculates a time point when a paging signal is transmitted. Then, when the time point when a paging signal is transmitted is reached, the controller 510 shifts the transceiver 505 into a reception mode, and attempts to decode a PDCCH. Then, when receiving a paging signal, the controller 510 stores the received paging signal in the buffer 515 , and transfers information on the received paging signal to an upper layer.
  • FIG. 6 is a flowchart illustrating the operation of an eNB according to the first exemplary embodiment of the present invention.
  • the eNB determines whether a paging signal is required for the UE 500 in step 610 . That is, when receiving data, which is to be transmitted to the UE 500 , from an upper layer in step 610 , the eNB determines that a paging signal is required, and proceeds to step 615 . In contrast, when the eNB does not receive data to be transmitted to the UE 500 in step 610 , the eNB is maintained in a waiting state until the eNB receives data to be transmitted to the UE 500 .
  • step 615 the eNB determines a timing (i.e., an SSFN and SFN), at which a paging signal is to be transmitted by taking an UE_ID (or MTC group ID) of the UE 500 . Then, in step 620 , the eNB checks the current SSFN and SFN. In step 625 , the eNB determines whether the checked current SSFN satisfies Equation 2, and proceeds to step 630 when the current SSFN satisfies Equation 2. In contrast, when current SSFN does not satisfy Equation 2 in step 625 , the eNB returns to step 620 .
  • a timing i.e., an SSFN and SFN
  • UE_ID or MTC group ID
  • step 630 the eNB determines whether the checked current SFN satisfies Equation 1, and proceeds to step 635 in order to transmit a paging signal when the current SFN satisfies equation 1. In contrast, when current SFN does not satisfy Equation 1 in step 630 , the eNB returns to step 620 .
  • step 635 when a transmission timing according to the checked SSFN and SFN is reached, the eNB transmits a paging signal to the UE 500 by a PDCCH.
  • FIG. 7 is a block diagram illustrating the configuration of an eNB according to an exemplary embodiment of the present invention.
  • the eNB 700 includes a buffer 705 , a controller 710 , and a transceiver 715 .
  • the controller 710 determines whether data to be transmitted to the UE 500 has been received through the buffer 705 from an upper layer. Then, the controller 710 calculates a timing (i.e., an SSFN and SFN), at which a paging signal is to be transmitted by taking an UE_ID (or MTC group ID) of the UE 500 . When the calculated SSFN and SFN (i.e., a timing at which the paging signal is to be transmitted), is reached based on Equations 1 and 2, the controller 710 transmits a Physical Downlink Control CHannel (PDCCH) including the paging signal through the transceiver 715 to the UE 500 .
  • a timing i.e., an SSFN and SFN
  • a Mobility Management Entity compares a UE-specific DRX cycle and a cell-specific DRX cycle, and determines and uses a smaller value of the two DRX cycles as a paging cycle of a corresponding UE.
  • MME Mobility Management Entity
  • an MTC requiring reduction of power consumption needs a DRX cycle longer than a cell-specific DRX cycle, which has been set for supporting general UEs.
  • a UE which supports dual radio For a UE which supports both 3GPP LTE and 3GPP 1X system, it is necessary to set a DRX cycle in accordance with a system having a long DRX cycle in order to reduce power consumption.
  • the second exemplary embodiment of the present invention provides a method for making it possible to apply a UE to apply a UE-specific DRX cycle, which is a relatively longer cycle, in a UE.
  • FIG. 8 is a flow diagram illustrating a procedure for applying a UE-specific DRX cycle according to the second exemplary embodiment of the present invention.
  • a UE 805 receives an SIB2 message from an eNB 810 , and is provided with a cell-specific DRX cycle included in the SIB2.
  • the UE 805 may receive a paging through the use of the cell-specific DRX cycle received from the eNB 810 , or may receive a paging after providing a UE-specific DRX cycle to a Mobility Management Entity (MME) 815 .
  • MME Mobility Management Entity
  • the UE 805 transfers an indication, representing that the UE 805 does not follow the existing DRX cycle determination scheme, and a UE-specific DRX cycle which is a long cycle desired by the UE 805 to the MME 815 , through an attach request message. Then, in step 830 , the MME 815 notifies the UE 805 that the attach request message has been successfully received, through an attach accept message. Thereafter, in step 835 , the UE 805 compares the cell-specific DRX cycle with the UE-specific DRX cycle, and determines a longer cycle value of the two DRX cycles to be applied. As an example, the UE 805 may determine the UE-specific DRX cycle to be applied, without performing the comparing process of step 835 .
  • the MME 815 provides the eNB 810 with the indication and UE-specific DRX cycle, which have been received from the UE 805 , so that the eNB 810 can calculate a DRX cycle of the UE 805 .
  • the eNB 810 determines a paging cycle of the UE 805 in a manner different from the existing determination scheme, due to the indication provided from the MME 815 . That is, in step 845 , the eNB 810 compares the cell-specific DRX cycle with the UE-specific DRX cycle, and determines a longer cycle value of the two cycles to be applied. As an example, without performing the comparing process of step 845 , the MME 815 may apply the UE-specific DRX cycle.
  • step 850 the eNB 810 transmits a paging to the UE 805 in the determined DRX cycle.
  • the second exemplary embodiment of the present invention shows an example in which the UE 805 directly provides the MME 815 with a desired DRX cycle
  • exemplary embodiments of the present invention may be implemented in such a manner that the UE 805 notifies the MME 815 that the UE 805 uses a DRX cycle having a specific cycle pattern.
  • the UE 805 may inform that the UE 805 does not follow the existing DRX cycle determination scheme, through an indication.
  • the UE 805 may define cycles having various patterns in advance, and use indication values indicating the cycles having various patterns.
  • heterogeneous wireless networks can be constructed in the same area.
  • Such heterogeneous wireless networks existing in the same area have a function of performing an intersystem overhead in order to maximize the performances thereof, and can provide a UE with a high-quality service in cooperation with each other.
  • eNBs of various versions may be installed for performance improvement, wherein as the version is upgraded, new functions may be added.
  • a UE may receive a service in a wireless network environment where homogeneous or heterogeneous eNBs, the maximums of offerable DRX cycles of which are different, exist together.
  • a UE requests a network to apply a long DRX cycle
  • a paging message may not be provided in the long DRX cycle requested by the UE depending on whether or not homogeneous or heterogeneous eNBs can support the corresponding DRX cycle. Therefore, an UE needs to be aware of whether an eNB of a cell, on which the UE is currently camping, can support a DRX cycle requested by the UE, and accordingly, the operation of the UE varies.
  • a UE's operation for supporting a long DRX cycle in the aforementioned wireless network environment is defined.
  • a state in which the UE is camping on a cell represents a state in which the UE can receive control information from the cell.
  • a method for supporting a long DRX cycle according to the third exemplary embodiment of the present invention is as follows.
  • a UE requests an eNB to apply a UE-specific DRX cycle through a registration process (which is called an attach process in 3GPP).
  • a registration process which is called an attach process in 3GPP.
  • the UE determines whether a long DRX cycle is supported in a corresponding cell whenever moving from a cell to another cell in an idle state.
  • a UE calculates a paging occasion through the use of a larger value of two DRX cycles (i.e., a long DRX cycle requested by the UE, and a cell-specific DRX cycle broadcasted in the cell).
  • a UE calculates a paging occasion through the use of a smaller value of two DRX cycles, (i.e., a UE-specific DRX cycle, which is a long DRX cycle requested by the UE, and a cell-specific DRX cycle broadcasted in the cell). Consequently, in a cell where a long DRX cycle is not supported, a cell-specific DRX cycle is used at all times.
  • an MME when transmitting a paging message for the UE, an MME inserts and transmits a value requested by the UE as the UE-specific DRX cycle of the paging message with respect to cells supporting a long DRX cycle among cells to which the paging message must be transmitted.
  • the MME inserts and transmits a predetermined value as the UE-specific DRX cycle of the paging message.
  • the predetermined value is used to allow a resultant value to be a cell-specific DRX cycle at all times when in a cell where a long DRX cycle is not supported uses a smaller value of two DRX cycles (i.e., a UE-specific DRX cycle provided by a MME, and a cell-specific DRX cycle managed by the cell according to the related technology). Therefore, the predetermined value may be the largest value (i.e., 2.56 seconds), of DRX cycles, other than the long DRX cycle.
  • the eNB determines whether the UE-specific DRX cycle of the paging message is a long DRX cycle, and calculates a paging occasion, during which the paging message is to be transmitted to the UE, by applying the UE-specific DRX cycle when the UE-specific DRX cycle of the paging message is a long DRX cycle.
  • the eNB calculates a paging occasion, during which the paging message is to be transmitted to the UE, through the use of a smaller value of two DRX cycles (i.e., a cell-specific DRX cycle, and the UE-specific DRX cycle).
  • FIG. 9 is a flow diagram illustrating the operations of a UE and an MME according to the third exemplary embodiment of the present invention.
  • an UE 905 when powered on, an UE 905 performs an attach process to an MME 910 in step 915 .
  • the UE 905 provides a desired DRX cycle to the MME 910 .
  • an eNB 920 of cell #1 on which the UE 905 is camping in step 925 is an eNB which cannot provide a long DRX cycle
  • the eNB 920 broadcasts system information that the eNB 920 cannot support the long DRX cycle to the UE 905 in step 930 .
  • DRX cycle min(cell specific DRX,UE specific DRX) (3)
  • the MME 910 sets a paging DRX cycle to 2.56 seconds, which is the maximum cycle, in step 940 , and transmits a paging to the eNB 920 in step 945 when the paging occurs.
  • an eNB 950 of cell #2 on which the UE 905 is camping in step 955 is an eNB which can provide a long DRX cycle
  • the eNB 950 broadcasts system information that the eNB 950 can support the long DRX cycle to the UE 905 in step 960 .
  • the UE 905 recognizes that the eNB 950 of cell #2, on which the UE 905 is currently camping, can provide the long DRX cycle requested by the UE 905 , the UE 905 determines a DRX cycle by Equation 4 below in step 965 .
  • DRX cycle max(cell specific DRX,UE specific DRX) (4)
  • the MME 910 sets a paging DRX cycle to the long DRX cycle requested by the UE 905 in step 970 , and transmits a paging to the eNB 950 in step 975 when the paging occurs.
  • FIG. 10 is a flowchart illustrating the operation of a UE according to the third exemplary embodiment of the present invention.
  • the UE 905 Before performing the operation described in FIG. 10 , the UE 905 performs a registration process with the MME 910 , wherein an eNB is notified of a UE-specific DRX cycle in the registration process.
  • the operation of the UE 905 presented in FIG. 10 , corresponds to the operation of the UE 905 which makes a request for the UE-specific DRX cycle (i.e., a long DRX cycle), having a value larger than the maximum value defined in LTE Rel-8/-9.
  • the UE 905 transitions to an idle state and performs an idle mode operation in general.
  • FIG. 10 illustrates an operation of the UE 905 for receiving a paging message in an idle state.
  • step 1010 when the UE 905 is camping on a cell in step 1010 , the UE 905 proceeds to step 1015 at which the UE 905 determines whether or not the eNB of the cell supports a long DRX cycle. Determination as to whether the eNB of the cell supports a long DRX cycle can be made in a manner as described in the second exemplary embodiment of the present invention.
  • the cell may be determined that the cell supports a long DRX cycle when system information broadcasted in the cell includes a “long DRX Support indication,” and it may be determined that the cell does not support a long DRX cycle when system information broadcasted in the cell does not include a “long DRX Support indication.” Otherwise, whether or not a long DRX cycle is supported may be set depending on each Tracking Area (TA).
  • the TA represents a unit area for identifying the mobility of a UE being in an idle state, and is constituted by a plurality of cells. When a UE being in an idle state is camping on a cell included in a TA different from a previous TA, the UE performs a location update procedure.
  • the MME 910 indicates whether or not a long DRX cycle is supported in a corresponding TA, and the UE 905 determines that a cell supports a long DRX cycle when the cell belongs to a TA supporting a long DRX cycle, and determines that a cell does not support a long DRX cycle when the cell belongs to a TA not supporting a long DRX cycle.
  • the UE 905 proceeds to step 1020 when a corresponding cell corresponds to a cell not supporting a long DRX cycle, and proceeds to step 1025 when the corresponding cell corresponds to a cell supporting a long DRX cycle.
  • the UE 905 selects a smaller value of a cell-specific DRX cycle and a UE-specific DRX cycle as a DRX cycle, and calculates a paging occasion by applying the selected DRX cycle.
  • the UE-specific DRX cycle always is longer than the cell-specific DRX cycle, so that the DRX cycle selected by the UE 905 in step 1020 is the cell-specific DRX cycle at all times. Therefore, step 1020 may be changed to a step in which the UE 905 selects the cell-specific DRX cycle without taking the UE-specific DRX cycle into consideration.
  • step 1025 the UE 905 selects a larger value of a cell-specific DRX cycle and a UE-specific DRX cycle as a DRX cycle, and calculates a paging occasion by applying the selected DRX cycle.
  • the UE 905 uses a long DRX cycle, the UE-specific DRX cycle always is longer than the cell-specific DRX cycle, so that the DRX cycle selected by the UE 905 in step 1025 is the UE-specific DRX cycle. Therefore, step 1025 may be changed to a step in which the UE 905 selects the UE-specific DRX cycle without taking the cell-specific DRX cycle into consideration.
  • step 1030 the UE 905 performs a DRX operation of determining whether a paging message is received every paging occasion, which has been calculated in step 1020 or 1025 .
  • FIG. 11 is a flowchart illustrating the operation of the MME according to the third exemplary embodiment of the present invention.
  • the MME 910 while the MME 910 performs an attach process with the UE 905 in step 1110 , the MME 910 receives a request for a long DRX cycle from the UE 905 in step 1115 .
  • the MME 910 stores the DRX cycle and so on requested by the UE 905 , and when a paging message for the UE 905 is generated, the MME 910 proceeds to step 1120 for determining a UE-specific DRX cycle which is inserted into a paging message to be transmitted to eNBs belonging to a TA, where the UE 905 is located. For example, in step 1120 , it may be determined whether the cell supports a long DRX cycle.
  • the MME 910 proceeds to step 1125 when an eNB of a cell belonging to a TA in which the UE 905 is located does not support a long DRX cycle, and proceeds to step 1130 when the corresponding eNB supports a long DRX cycle.
  • the MME 910 inserts a predetermined value (e.g., 2.56 seconds), other than the UE-specific DRX cycle of the UE 905 , into a UE-specific DRX cycle section of the paging message to be transmitted to the eNB, and then transmits the paging message.
  • a predetermined value e.g., 2.56 seconds
  • step 1130 the MME 910 inserts the UE-specific DRX cycle requested by the UE 905 into the UE-specific DRX cycle section of the paging message to be transmitted to the eNB, and then transmits the paging message.

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Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101823475B1 (ko) * 2010-02-09 2018-01-30 엘지전자 주식회사 Ｍｔｃ 기기가 사용되는 이동통신시스템에서 메시지 송수신 방법 및 이를 위한 장치
EP2574112B1 (en) * 2011-09-21 2016-11-30 Gemalto M2M GmbH Power saving mechanism for mobile terminal
EP2621242A1 (en) * 2012-01-26 2013-07-31 Panasonic Corporation Improved discontinuous reception operation with additional wake up opportunities
EP2848081A1 (en) 2012-05-09 2015-03-18 Interdigital Patent Holdings, Inc. Handling mtc long drx cycle/sleep lengths
GB2502274B (en) * 2012-05-21 2017-04-19 Sony Corp Telecommunications systems and methods
CN104885514B (zh) 2012-11-01 2019-05-21 英特尔公司 在LTE-A网络中发送QoS要求以及UE功率偏好的信号
CN103874170A (zh) 2012-12-10 2014-06-18 中兴通讯股份有限公司 一种用户设备及利用扩展寻呼周期进行寻呼的方法和系统
EP2936918A1 (en) * 2012-12-19 2015-10-28 Telefonaktiebolaget L M Ericsson (publ) Increasing drx cycle length by adding higher order bits for system frame number sfn outside of sfn parameter
US9730184B2 (en) * 2013-01-14 2017-08-08 Qualcomm Incorporated Broadcast and paging channels for machine type communication
CN108683485B (zh) * 2013-01-17 2021-03-12 苹果公司 Tdd传输的ul/dl帧资源动态配置的方法和装置
WO2014113074A1 (en) * 2013-01-17 2014-07-24 Intel IP Corporation Techniques and systems for extended discontinuous reception
EP3544221A1 (en) 2013-01-17 2019-09-25 Intel IP Corporation Dynamic configuration of uplink (ul) and downlink (dl) frame resources for a time division duplex (tdd) transmission
US20140297818A1 (en) * 2013-03-29 2014-10-02 Microsoft Corporation Parallel and Dynamic Interface Selection
CN104105111B (zh) * 2013-04-02 2017-11-21 电信科学技术研究院 一种激活时刻的计算方法及装置
US10455508B2 (en) 2013-04-03 2019-10-22 Hfi Innovation Inc. Method and device for monitoring paging signal
CN104105177B (zh) * 2013-04-06 2017-12-12 上海贝尔股份有限公司 用于空闲模式用户设备的功率节省的方法和装置
US20160057738A1 (en) * 2013-05-09 2016-02-25 Lg Electronics Inc. Method for monitoring paging occasions in a wireless communication system and device therefor
CN104995967A (zh) * 2013-05-10 2015-10-21 富士通株式会社 扩展寻呼周期下寻呼机会的计算方法和装置
US9402232B2 (en) * 2013-05-10 2016-07-26 Mediatek Inc. Cell reselection enhancement for power saving LTE devices
GB2514117A (en) * 2013-05-13 2014-11-19 Nec Corp Communication system
JP6121808B2 (ja) * 2013-06-17 2017-04-26 京セラ株式会社 無線通信システムおよび無線通信方法
KR102182517B1 (ko) * 2013-08-02 2020-11-24 삼성전자 주식회사 이동 통신 시스템에서 시스템 정보와 페이징을 수신하는 방법 및 장치
WO2015020588A2 (en) * 2013-08-09 2015-02-12 Telefonaktiebolaget L M Ericsson (Publ) A network node and mobile device for use in a communication network, and methods of operating the same and computer program products
PT3031261T (pt) * 2013-08-09 2022-01-25 Ericsson Telefon Ab L M Radiodifusão de informações de sistema para comunicação tipo máquina
CN105453661B (zh) * 2013-08-09 2019-07-19 瑞典爱立信有限公司 用于在通信网络中使用的网络节点和移动设备、操作网络节点和移动设备的方法、以及计算机程序产品
EP2861033B1 (en) * 2013-10-08 2016-05-25 Telefónica, S.A. Method, system and devices for improving discontinous reception in wireless communication networks
CN105359591B (zh) * 2014-02-21 2019-08-13 华为技术有限公司 一种网络故障的处理方法和设备
US9763172B2 (en) * 2014-08-06 2017-09-12 Qualcomm Incorporated Idle-mode enhancements for extended idle discontinuous reception (EI-DRX)
US10440661B2 (en) * 2014-08-06 2019-10-08 Quacomm Incorporated RAN procedures for extended discontinuous reception (DRX)
CN106465268B (zh) * 2015-01-23 2019-09-27 华为技术有限公司 一种用户设备省电方法及设备
WO2016122384A1 (en) * 2015-01-30 2016-08-04 Telefonaktiebolaget Lm Ericsson (Publ) Network node and method in a wireless telecommunications network
CN107251626B (zh) * 2015-03-02 2020-02-14 华为技术有限公司 一种寻呼方法、寻呼设备、核心网设备、基站和寻呼系统
JPWO2016140271A1 (ja) * 2015-03-03 2017-12-28 京セラ株式会社 基地局、プロセッサ、通信方法、ユーザ端末
EP3253131B1 (en) * 2015-03-03 2019-09-18 Kyocera Corporation Wireless terminal and base station
US10455505B2 (en) * 2015-05-11 2019-10-22 Intel IP Corporation Paging enhancement for extended DRX in cellular systems
KR102401717B1 (ko) * 2015-06-15 2022-05-26 삼성전자 주식회사 이동 통신 시스템에서 그룹 통신 방법 및 장치
US10568028B2 (en) * 2015-08-07 2020-02-18 Samsung Electronics Co., Ltd Method and apparatus for applying discontinuous reception mode in wireless communication system
WO2017026188A1 (ja) * 2015-08-11 2017-02-16 京セラ株式会社 基地局、モビリティ管理装置、無線端末、及びネットワーク装置
EP3253128B1 (de) * 2016-06-02 2019-04-03 Deutsche Telekom AG Kommunikationsnetzwerk mit einer management-entität mit call back-funktionalität
WO2018174614A1 (ko) * 2017-03-22 2018-09-27 엘지전자 주식회사 무선 통신 시스템에서 단말과 기지국의 신호 송수신 방법 및 이를 지원하는 장치
CN110945916B (zh) * 2017-08-11 2023-02-17 Oppo广东移动通信有限公司 寻呼方法、终端设备和网络设备
EP3634044A4 (en) 2017-09-07 2020-07-08 Guangdong Oppo Mobile Telecommunications Corp., Ltd. DISCONTINUOUS RECEPTION METHOD, TERMINAL DEVICE AND NETWORK DEVICE
CN108601068B (zh) 2018-03-28 2019-12-24 维沃移动通信有限公司 一种ue能力的检测方法、上报方法、移动终端及服务器
GB2577316B (en) * 2018-09-21 2020-09-16 Tcl Communication Ltd Paging in a cellular network
US11284470B2 (en) * 2019-01-28 2022-03-22 Qualcomm Incorporated User equipment specific discontinuous reception cycle
KR20200098962A (ko) 2019-02-13 2020-08-21 삼성전자주식회사 차세대 이동통신 시스템에서 비활성 모드에서 확장된 비연속 수신 모드를 수행하는 방법 및 장치
CN111867018B (zh) * 2019-04-30 2022-09-23 华为技术有限公司 通信方法、装置及系统
US11665770B2 (en) * 2019-10-04 2023-05-30 Qualcomm Incorporated Narrowband reference signal for user equipment specific discontinuous reception cycle

Citations (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020006805A1 (en) 2000-07-13 2002-01-17 New Wen Jing Method and apparatus for performing idle mode reacquisition and handoff in an asynchronous communication system
US20040023672A1 (en) 2002-08-01 2004-02-05 Interdigital Technology Corporation Method for coordinating paging occasions on a common paging channel
US20040029596A1 (en) 2002-06-20 2004-02-12 Samsung Electronics Co., Ltd. Paging apparatus and method for MBMS service in a mobile communication system
KR20040036966A (ko) 2002-10-25 2004-05-04 엘지전자 주식회사 이동 통신 단말기의 절전 방법
US20050249140A1 (en) 2004-04-19 2005-11-10 Lg Electronics Inc. Transmission of control information in wireless communication system
US20080167089A1 (en) * 2007-01-09 2008-07-10 Takashi Suzuki Method and System for the Support of a Long DRX in an LTE_Active State in a Wireless Network
US20080182596A1 (en) * 2007-01-31 2008-07-31 Interdigital Technology Corporation Method and apparatus for paging group handling
US20090191883A1 (en) * 2008-01-25 2009-07-30 Infineon Technologies Ag Method and device for transmitting data
US20090203376A1 (en) * 2008-02-04 2009-08-13 Qualcomm, Incorporated Suitable trigger mechanism to control new cell identification in ue when in drx mode
JP2010114892A (ja) * 2008-11-06 2010-05-20 Asustek Computer Inc 不連続受信機能を改善する方法及び通信装置
US7734264B2 (en) * 2006-08-29 2010-06-08 Qualcomm Incorporated System frame number (SFN) evaluator
KR20100091091A (ko) 2009-02-09 2010-08-18 엘지전자 주식회사 페이징 메시지 수신방법
US20100214968A1 (en) * 2009-02-25 2010-08-26 Broadcom Corporation Idle mode power consumption reduction in wireless communications
US20100272004A1 (en) * 2007-12-17 2010-10-28 Mitsubishi Electric Corporation Mobile communication system
KR20100128323A (ko) 2008-06-03 2010-12-07 엘지전자 주식회사 광대역 무선 접속 시스템에서 페이징 정보 송수신 방법
KR20110002440A (ko) 2009-07-01 2011-01-07 한국전자통신연구원 무선 통신 시스템에서 페이징을 수행하는 방법
US7969932B2 (en) * 2006-07-24 2011-06-28 Lg Electronics Inc. Point to point radio bearers for a broadcasting service
US20110267959A1 (en) * 2008-06-18 2011-11-03 Seung-June Yi METHOD FOR TRANSMITTING MAC PDUs
US8099091B2 (en) * 2010-05-13 2012-01-17 Apple Inc. Method to control configuration change times in a wireless device
US8169957B2 (en) * 2007-02-05 2012-05-01 Qualcomm Incorporated Flexible DTX and DRX in a wireless communication system
US8279817B2 (en) * 2008-11-03 2012-10-02 Htc Corporation Method of managing discontinuous reception offset in a wireless communications system and related communication device
US8462736B2 (en) * 2009-06-19 2013-06-11 Telefonaktiebolaget L M Ericsson (Publ) Telecommunications method and apparatus for facilitating positioning measurements
US8543140B2 (en) * 2007-12-03 2013-09-24 Huawei Technologies Co., Ltd. Method and apparatus for determining paging time
US8606304B2 (en) * 2007-09-14 2013-12-10 Ntt Docomo, Inc. Paging signal transmission method, mobile station and radio base station
US8634383B2 (en) * 2009-11-13 2014-01-21 Qualcomm Incorporated Method and apparatus for resolving paging monitoring conflicts in multimode wireless equipment
US8693381B2 (en) * 2009-09-30 2014-04-08 Zte Corporation Method and system for discontinuous reception (DRX) configuration
US8718122B2 (en) * 2010-02-18 2014-05-06 Azimuth Systems, Inc. Testing performance of a wireless device
US8750204B2 (en) * 2008-01-28 2014-06-10 Lg Electronics Inc. Method for transmitting UE-triggered channel status information
US8768385B2 (en) * 2011-11-07 2014-07-01 Nokia Siemens Networks Oy Radio impacts due to group triggering and paging and solutions for group triggering and paging
US8792919B2 (en) * 2008-02-22 2014-07-29 Nokia Corporation Paging DRX optimization
US8817681B2 (en) * 2009-04-20 2014-08-26 Panasonic Intellectual Property Corporation Of America Wireless communication apparatus and wireless communication method using a gap pattern
US8831646B2 (en) * 2007-06-19 2014-09-09 Nokia Corporation Apparatus, method and computer program product providing idle mode discontinuous reception
US9042248B2 (en) * 2009-10-02 2015-05-26 Nec Corporation Radio communication system, radio terminals, radio base stations, radio communication method and program
US20160044605A1 (en) * 2014-08-06 2016-02-11 Qualcomm Incorporated Ran procedures for extended discontinuous reception (drx)
US9320014B2 (en) * 2010-09-15 2016-04-19 Huawei Technologies Co., Ltd. Method and base station for eliminating paging interference in heterogeneous network
US9402232B2 (en) * 2013-05-10 2016-07-26 Mediatek Inc. Cell reselection enhancement for power saving LTE devices
US9560140B2 (en) * 2009-09-29 2017-01-31 Qualcomm Incorporated Signaling identification of machine to machine devices and services
US9763151B2 (en) * 2013-07-04 2017-09-12 Electronics And Telecommunications Research Institute Control method for supporting multiple connections in mobile communication system and apparatus for supporting multiple connections
US9763172B2 (en) * 2014-08-06 2017-09-12 Qualcomm Incorporated Idle-mode enhancements for extended idle discontinuous reception (EI-DRX)
US20190028999A1 (en) * 2017-07-24 2019-01-24 Qualcomm Incorporated Paging and drx enhancements for emtc-u (iot-u)
US20190090193A1 (en) * 2017-09-15 2019-03-21 Qualcomm Incorporated Techniques and apparatuses for wakeup signal transmission
US20190191410A1 (en) * 2013-08-02 2019-06-20 Samsung Electronics Co., Ltd. Method and apparatus for receiving system information and paging in mobile communication system

Patent Citations (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020006805A1 (en) 2000-07-13 2002-01-17 New Wen Jing Method and apparatus for performing idle mode reacquisition and handoff in an asynchronous communication system
US20040029596A1 (en) 2002-06-20 2004-02-12 Samsung Electronics Co., Ltd. Paging apparatus and method for MBMS service in a mobile communication system
US7395076B2 (en) * 2002-06-20 2008-07-01 Samsung Electronics Co., Ltd Paging apparatus and method for MBMS service in a mobile communication system
US20040023672A1 (en) 2002-08-01 2004-02-05 Interdigital Technology Corporation Method for coordinating paging occasions on a common paging channel
KR20040036966A (ko) 2002-10-25 2004-05-04 엘지전자 주식회사 이동 통신 단말기의 절전 방법
US20050249140A1 (en) 2004-04-19 2005-11-10 Lg Electronics Inc. Transmission of control information in wireless communication system
US7969932B2 (en) * 2006-07-24 2011-06-28 Lg Electronics Inc. Point to point radio bearers for a broadcasting service
US7734264B2 (en) * 2006-08-29 2010-06-08 Qualcomm Incorporated System frame number (SFN) evaluator
US20080167089A1 (en) * 2007-01-09 2008-07-10 Takashi Suzuki Method and System for the Support of a Long DRX in an LTE_Active State in a Wireless Network
US20080182596A1 (en) * 2007-01-31 2008-07-31 Interdigital Technology Corporation Method and apparatus for paging group handling
US8169957B2 (en) * 2007-02-05 2012-05-01 Qualcomm Incorporated Flexible DTX and DRX in a wireless communication system
US8831646B2 (en) * 2007-06-19 2014-09-09 Nokia Corporation Apparatus, method and computer program product providing idle mode discontinuous reception
US8606304B2 (en) * 2007-09-14 2013-12-10 Ntt Docomo, Inc. Paging signal transmission method, mobile station and radio base station
US8543140B2 (en) * 2007-12-03 2013-09-24 Huawei Technologies Co., Ltd. Method and apparatus for determining paging time
US20100272004A1 (en) * 2007-12-17 2010-10-28 Mitsubishi Electric Corporation Mobile communication system
US20090191883A1 (en) * 2008-01-25 2009-07-30 Infineon Technologies Ag Method and device for transmitting data
US8750204B2 (en) * 2008-01-28 2014-06-10 Lg Electronics Inc. Method for transmitting UE-triggered channel status information
US20090203376A1 (en) * 2008-02-04 2009-08-13 Qualcomm, Incorporated Suitable trigger mechanism to control new cell identification in ue when in drx mode
US8792919B2 (en) * 2008-02-22 2014-07-29 Nokia Corporation Paging DRX optimization
US20170013593A1 (en) 2008-06-03 2017-01-12 Lg Electronics Inc. Method for transmitting and receiving paging information in a broadband wireless access system
KR20100128323A (ko) 2008-06-03 2010-12-07 엘지전자 주식회사 광대역 무선 접속 시스템에서 페이징 정보 송수신 방법
US20110267959A1 (en) * 2008-06-18 2011-11-03 Seung-June Yi METHOD FOR TRANSMITTING MAC PDUs
US8279817B2 (en) * 2008-11-03 2012-10-02 Htc Corporation Method of managing discontinuous reception offset in a wireless communications system and related communication device
JP2010114892A (ja) * 2008-11-06 2010-05-20 Asustek Computer Inc 不連続受信機能を改善する方法及び通信装置
KR20100091091A (ko) 2009-02-09 2010-08-18 엘지전자 주식회사 페이징 메시지 수신방법
US20100214968A1 (en) * 2009-02-25 2010-08-26 Broadcom Corporation Idle mode power consumption reduction in wireless communications
US8817681B2 (en) * 2009-04-20 2014-08-26 Panasonic Intellectual Property Corporation Of America Wireless communication apparatus and wireless communication method using a gap pattern
US8462736B2 (en) * 2009-06-19 2013-06-11 Telefonaktiebolaget L M Ericsson (Publ) Telecommunications method and apparatus for facilitating positioning measurements
KR20110002440A (ko) 2009-07-01 2011-01-07 한국전자통신연구원 무선 통신 시스템에서 페이징을 수행하는 방법
US9560140B2 (en) * 2009-09-29 2017-01-31 Qualcomm Incorporated Signaling identification of machine to machine devices and services
US8693381B2 (en) * 2009-09-30 2014-04-08 Zte Corporation Method and system for discontinuous reception (DRX) configuration
US9042248B2 (en) * 2009-10-02 2015-05-26 Nec Corporation Radio communication system, radio terminals, radio base stations, radio communication method and program
US8634383B2 (en) * 2009-11-13 2014-01-21 Qualcomm Incorporated Method and apparatus for resolving paging monitoring conflicts in multimode wireless equipment
US8718122B2 (en) * 2010-02-18 2014-05-06 Azimuth Systems, Inc. Testing performance of a wireless device
US8099091B2 (en) * 2010-05-13 2012-01-17 Apple Inc. Method to control configuration change times in a wireless device
US9320014B2 (en) * 2010-09-15 2016-04-19 Huawei Technologies Co., Ltd. Method and base station for eliminating paging interference in heterogeneous network
US8768385B2 (en) * 2011-11-07 2014-07-01 Nokia Siemens Networks Oy Radio impacts due to group triggering and paging and solutions for group triggering and paging
US9402232B2 (en) * 2013-05-10 2016-07-26 Mediatek Inc. Cell reselection enhancement for power saving LTE devices
US9763151B2 (en) * 2013-07-04 2017-09-12 Electronics And Telecommunications Research Institute Control method for supporting multiple connections in mobile communication system and apparatus for supporting multiple connections
US20190191410A1 (en) * 2013-08-02 2019-06-20 Samsung Electronics Co., Ltd. Method and apparatus for receiving system information and paging in mobile communication system
US20160044605A1 (en) * 2014-08-06 2016-02-11 Qualcomm Incorporated Ran procedures for extended discontinuous reception (drx)
US9763172B2 (en) * 2014-08-06 2017-09-12 Qualcomm Incorporated Idle-mode enhancements for extended idle discontinuous reception (EI-DRX)
US20190028999A1 (en) * 2017-07-24 2019-01-24 Qualcomm Incorporated Paging and drx enhancements for emtc-u (iot-u)
US20190090193A1 (en) * 2017-09-15 2019-03-21 Qualcomm Incorporated Techniques and apparatuses for wakeup signal transmission

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Bo et al, "DRX-Aware Scheduling Method for Delay-Sensitive Traffic", Dec. 2010, IEEE Communications Letters, vol. 14. *
G.S. S Kim et al, "An Adjustable Power Management for Optimal Power Saving in LTE Terminal Baseband Modem", Oct. 2009, IEEE. *
R2-100331, Introduction of longer SFN length for MTC, 3GPP TSG RAN WG2 #68bis, Valencia, Spain, Jan. 18-22.

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US20120300685A1 (en) 2012-11-29
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