WO2014098409A1 - Procédé et appareil permettant de prendre en charge la préférence de puissance d'un équipement d'utilisateur en considération de la qualité de service - Google Patents

Procédé et appareil permettant de prendre en charge la préférence de puissance d'un équipement d'utilisateur en considération de la qualité de service Download PDF

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Publication number
WO2014098409A1
WO2014098409A1 PCT/KR2013/011487 KR2013011487W WO2014098409A1 WO 2014098409 A1 WO2014098409 A1 WO 2014098409A1 KR 2013011487 W KR2013011487 W KR 2013011487W WO 2014098409 A1 WO2014098409 A1 WO 2014098409A1
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WIPO (PCT)
Prior art keywords
terminal
qos
preference
state
base station
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PCT/KR2013/011487
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English (en)
Korean (ko)
Inventor
정명철
권기범
안재현
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주식회사 팬택
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Publication of WO2014098409A1 publication Critical patent/WO2014098409A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/265—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the quality of service QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • the present invention relates to wireless communication, and more particularly, to a method and apparatus for supporting power preference of a terminal in consideration of quality of service (QoS).
  • QoS quality of service
  • the terminal should be operated in consideration of power saving due to resource conditions such as limited battery.
  • the terminal may use a discontinuous reception (DRX) method.
  • DRX discontinuous reception
  • the terminal may be alternately operated by dividing into a non-active time and an active time. Therefore, the terminal or the base station may reduce the battery consumption of the terminal by a method such as longer inactivity time of the DRX method, depending on the type of application or traffic, or the battery saving needs of the terminal.
  • the terminal or the base station may be required to maintain the maximum wireless data communication efficiency of the terminal by a method such as shortening the inactivity time of the DRX scheme.
  • a method for allowing the terminal and the base station to support the power preference of the terminal is required in order to adaptively set radio resources according to the situation of the terminal such as traffic type or battery state.
  • a terminal and a base station can support power preferences of a terminal in consideration of QoS required according to a service provided by the base station to the terminal.
  • An object of the present invention is to provide a method and apparatus for supporting power preference of a terminal.
  • Another technical problem of the present invention is to provide a method and apparatus for supporting a power preference of a terminal in consideration of QoS.
  • Another technical problem of the present invention is to provide a method and apparatus for performing radio resource configuration / reconfiguration based on whether to guarantee QoS in supporting power preference of a terminal.
  • Another technical problem of the present invention is to provide a structure of a UE Assistant Information (UE Assistant Information) message for supporting the power preference of the terminal in consideration of QoS.
  • UE Assistant Information UE Assistant Information
  • Another technical problem of the present invention is to provide an information element (IE) for supporting power preference of a terminal in consideration of QoS.
  • IE information element
  • Another technical problem of the present invention is to provide a method and apparatus for configuring radio resource control (RRC) parameters in consideration of QoS in supporting power preference of a terminal.
  • RRC radio resource control
  • a method for supporting power preference of the terminal performed by the terminal.
  • the method comprises receiving from the base station a first Radio Resource Control (RRC) Connection Reconfiguration message that includes power preference indicator-enabled information that allows the power preference indicator to be transmitted to the base station.
  • RRC Radio Resource Control
  • Terminal assistance information including a power preference indicator (PPI) indicating a power preference state of the terminal and a QoS preference indicator (QPI) indicating a quality of service (QoS) preference state of the terminal; Generating and transmitting a message to the base station, and receiving a second RRC connection reconfiguration message from the base station, the second RRC connection reconfiguration message including an RRC related parameter reconfigured by the base station based on the power preference indicator and the QoS preference indicator; Characterized in that it comprises a step.
  • PPI power preference indicator
  • QPI QoS preference indicator
  • QoS quality of service
  • a method for supporting power preference of a terminal performed by a base station includes transmitting to the terminal a first RRC connection reconfiguration message including power preference indicator-enabled information allowing the transmission of a power preference indicator to a base station, the power preference indicator indicating a power preference state of the terminal; Receiving a terminal assistance information message including a QoS preference indicator indicating a QoS preference state of the terminal from the terminal, reconfiguring RRC related parameters based on the power preference indicator and the QoS preference indicator, and reconfiguring And transmitting a second RRC connection reconfiguration message including RRC related parameters to the terminal.
  • a terminal supporting power preference receives a first RRC connection reconfiguration message including power preference indicator-enabled information allowing the transmission of a power preference indicator to the base station from the base station, and determines the power preference state and QoS preference state of the terminal.
  • a transmitting unit configured to receive a second RRC connection reconfiguration message including the RRC related parameters reconfigured by the base station based on the power preference indicator and the QoS preference indicator.
  • a base station supporting power preference of a terminal transmits a first RRC connection reconfiguration message including power preference indicator-enabled information allowing the base station to transmit a power preference indicator to the base station, the power preference indicating a power preference state of the terminal.
  • a parameter change unit configured to reconfigure RRC related parameters based on a receiver for receiving a terminal assistance information message from the terminal, the terminal assistance information message including an indicator and a QoS preference indicator indicating a QoS preference state of the terminal;
  • a message processing unit for generating a second RRC connection reconfiguration message including the reconfigured RRC related parameters, wherein the transmitter transmits the generated second RRC connection reconfiguration message to the terminal.
  • the base station can not only inform the terminal by reconfiguring the RRC-related parameters based on the power preference of the terminal, the terminal can inform the base station of the preference for its QoS, the base station is the QoS of the terminal Check the preference for, and adaptively perform RRC-related parameter reconstruction. That is, the base station may support the terminal power preference in consideration of the terminal's preference for QoS guarantee.
  • FIG. 1 shows a wireless communication system to which the present invention is applied.
  • FIG. 2 shows a structure of a subframe to which the present invention is applied.
  • FIG. 3 is a flowchart illustrating a procedure of transmitting a power preference indicator of a terminal according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a procedure of supporting power preference of a terminal according to an embodiment of the present invention.
  • FIG. 5 is a conceptual diagram illustrating a DRX operation according to an embodiment of the present invention.
  • FIG. 6 shows a structure of a bearer service in a wireless communication system to which the present invention is applied.
  • FIG. 7 is a flowchart illustrating a power preference support procedure of a terminal considering QoS according to the present invention.
  • FIG. 8 is a flowchart illustrating a method for supporting power preference of a terminal by a terminal according to an embodiment of the present invention.
  • FIG. 9 is a flowchart illustrating a method for supporting power preference of a terminal by a base station according to an embodiment of the present invention.
  • FIG. 10 is a block diagram illustrating a terminal and a base station supporting power preference of another terminal according to an example of the present invention.
  • the present specification describes a wireless communication network
  • the operation performed in the wireless communication network is performed in the process of controlling the network and transmitting data in the system (for example, the base station) that is in charge of the wireless communication network, or the corresponding wireless Work may be done at the terminal coupled to the network.
  • FIG. 1 shows a wireless communication system to which the present invention is applied.
  • the wireless communication system 10 is widely deployed to provide various communication services such as voice and packet data.
  • the wireless communication system 10 includes at least one base station 11 (evolved-NodeB, eNB).
  • Each base station 11 provides a communication service for specific cells 15a, 15b, and 15c.
  • the cell can in turn be divided into a number of regions (called sectors).
  • the base station 11 may be called by other terms such as a base station (BS), a base transceiver system (BTS), an access point, an femto base station, a home node B, a relay, and the like.
  • BS base station
  • BTS base transceiver system
  • a cell is meant to encompass all of the various coverage areas such as megacell, macrocell, microcell, picocell, femtocell, and the like.
  • the UE 12 may be fixed or mobile and may have a mobile station (MS), a mobile terminal (MS), a mobile terminal (MT), a user terminal (UT), a subscriber station (SS), a wireless device, or a PDA. (personal digital assistant), wireless modem (wireless modem), a handheld device (handheld device) may be called other terms.
  • MS mobile station
  • MS mobile terminal
  • MT mobile terminal
  • UT user terminal
  • SS subscriber station
  • PDA personal digital assistant
  • wireless modem wireless modem
  • handheld device handheld device
  • downlink refers to a transmission link from the base station 11 to the terminal 12
  • uplink refers to a transmission link from the terminal 12 to the base station 11. it means.
  • the transmitter may be part of the base station 11 and the receiver may be part of the terminal 12.
  • the transmitter may be part of the terminal 12 and the receiver may be part of the base station 11.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier-FDMA
  • OFDM-FDMA OFDM-FDMA
  • OFDM-TDMA OFDM-FDMA
  • OFDM-TDMA OFDM-FDMA
  • various multiple access schemes such as OFDM-CDMA may be used.
  • the uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.
  • TDD time division duplex
  • FIG. 2 shows a structure of a subframe to which the present invention is applied.
  • one radio frame includes 10 subframes, and one subframe includes two consecutive slots.
  • the preceding 1, 2, 3 or 4 OFDM symbols of the first slot in the subframe are the control region to which the PDCCH is mapped, and the remaining OFDM symbols are mapped to the physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • the control region may be allocated a control channel such as PCFICH and PHICH.
  • the UE may read data information transmitted through the PDSCH by decoding the PDCCH.
  • the UE is based on the PDCCH based on a cell-radio network temporary identifier (C-RNTI), transmission power control (TPC) -PUCCH-RNTI, TPC-PUSCH-RNTI and Semi Persistent Scheduling (RNS) -RNTI.
  • C-RNTI cell-radio network temporary identifier
  • TPC transmission power control
  • RRC Semi Persistent Scheduling
  • Monitoring can be performed. Monitoring of the PDCCH may be controlled by a discontinuous reception (DRX) operation, the parameters for the DRX is transmitted by the base station to the terminal by the RRC message.
  • DRX discontinuous reception
  • the terminal should always receive system information (SI) -RNTI, p (paging) -RNTI and the like regardless of the DRX operation configured by the RRC message.
  • SI system information
  • p paging
  • the terminal performs discontinuous monitoring on the PDCCH based on the DRX operation.
  • the UE monitors the continuous PDCCH.
  • Discontinuous PDCCH monitoring may mean that the UE monitors the PDCCH only in a specific subframe, and continuous PDCCH monitoring may mean that the UE monitors the PDCCH in all subframes.
  • PDCCH monitoring is required in a DRX independent operation such as a random access procedure, the UE monitors the PDCCH according to the requirements of the corresponding operation.
  • the terminal should operate in consideration of power saving due to a limited battery such as a battery, and for this purpose, the terminal may use the DRX scheme or the like.
  • the terminal may be alternately operated by dividing into a non-active time and an active time. Therefore, the terminal or the base station may reduce the battery consumption of the terminal by a method such as longer inactivity time of the DRX method, depending on the type of application or traffic, or the battery saving needs of the terminal.
  • the terminal or the base station may be required to maintain the maximum wireless data communication efficiency of the terminal by a method such as shortening the inactivity time of the DRX scheme.
  • a method capable of reflecting information on a preferred mode of the terminal between the terminal and the base station is required.
  • FIG. 3 is a flowchart illustrating a procedure of transmitting a power preference indicator of a terminal according to an embodiment of the present invention.
  • the base station transmits an RRC connection reconfiguration message to the terminal (S300).
  • the RRC connection reconfiguration message includes power PrefIndication-Enabled information and powerFrefIndication-Timer information.
  • the power preference indicator-enabled information is information for allowing or instructing a terminal capable of transmitting a power preference indicator (PPI) to transmit the power preference indicator to a base station.
  • the power preference indicator-timer information includes time information regarding a PPI prohibit timer.
  • the PPI prohibit timer may indicate a minimum time interval (MTI) for the UE to transmit the power preference indicator.
  • MTI minimum time interval
  • the terminal sets the PPI prohibit timer based on the power preference indicator-timer, and when the terminal transmits a power preference indicator to the base station, operates the PPI prohibit timer, and again during the time that the PPI prohibit timer operates. It does not transmit power preference information of the terminal.
  • the terminal transmits a UE assistant information message to the base station (S310).
  • the terminal assistance information message includes the power preference indicator.
  • the terminal assistance information message is an RRC dedicated message.
  • the terminal may receive the power preference indicator-enabled information and transmit the power preference indicator to the base station by including the power preference indicator in the terminal assistance information.
  • the terminal may receive the power preference indicator-enabled information from the base station and transmit the power preference indicator to the base station when the PPI prohibit timer is not running.
  • the terminal may transmit the power preference indicator to the base station if the power preference indicator has not been transmitted to the base station even after being connected to the current serving cell.
  • the terminal may transmit a power preference indicator to the base station.
  • the terminal may transmit a power preference indicator to the base station immediately when the PPI prohibit timer expires.
  • the power preference indicator indicates the power preference state of the terminal.
  • the power preference state of the terminal indicated by the power preference indicator includes, for example, a normal state (or a default state) and a low power consumption state.
  • the normal state indicates that the terminal has no special preference.
  • the normal state may indicate a state in which a terminal basically maintains a resource, a radio resource, a power consumption state, or a DRX state set in a network.
  • the normal state may represent a state in which the current setting is maintained without considering specially the characteristics of the traffic. That is, the terminal in the normal state may be regarded as a state in which the basic state is maintained without a particularly preferred configuration.
  • the normal state may be a state having a relatively high transmission efficiency compared to the low power consumption state described later. For example, even if the battery consumption is somewhat increased depending on the application used by the terminal, it may be regarded as a state requiring setting related to the base station in consideration of transmission efficiency.
  • the low power consumption state indicates that the terminal prefers low battery consumption.
  • the low power consumption state may be regarded as a state in which the UE requires a related setting to reduce the battery consumption more than the current battery consumption state in order to minimize battery consumption.
  • the base station may reconfigure the related configuration so that the terminal can reduce the battery consumption based on the information on the low power consumption state.
  • the base station may perform RRC related parameter reconfiguration by reflecting the power preference state of the terminal indicated by the power preference indicator of the terminal.
  • the power preference of the terminal is a reference that the base station considers in configuring the radio resource, and the base station may perform RRC related parameter reconfiguration unlike the power preference of the terminal.
  • the RRC related parameter to be reconfigured mainly corresponds to radio resource allocation and the like, but may include DRX parameters and the like, but is not limited thereto.
  • FIG. 4 is a flowchart illustrating a procedure of supporting power preference of a terminal according to an embodiment of the present invention.
  • the base station reconfigures an RRC related parameter, for example, a DRX related parameter, based on a power preference indicator of the terminal included in the terminal assistance information message received in S410, and transmits an RRC connection reconfiguration message including the same to the terminal (S420). ).
  • Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • DRX refers to a function that allows a UE to stop monitoring a downlink physical downlink control channel (PDCCH) for a predetermined period (eg, non-active time).
  • a predetermined period eg, non-active time.
  • the UE repeats an active time and a non-active time with a certain periodicity.
  • Activity means that the UE monitors the PDCCH.
  • Inactivity means that the UE stops monitoring the PDCCH.
  • the DRX may be configured by radio resource control / media access control (RRC / MAC).
  • Related DRX parameters may include a long DRX cycle, a DRX Inactivity Timer, and a DRX Retransmission Timer.
  • the DRX includes a short DRX cycle and a DRX Short Cycle Timer (drxShortCycleTimer).
  • the long term DRX cycle provides longer inactivity time for the terminal than the short term DRX cycle.
  • FIG. 5 is a conceptual diagram illustrating a DRX operation according to an embodiment of the present invention.
  • the DRX operation is repeated in units of DRX cycles 500.
  • the DRX cycle 500 is a periodic repetition of an DRX opportunity (DR 510) and a duration (On Duration 505). Is defined. That is, one cycle of DRX cycle 500 includes a duration 505 and a DRX opportunity (DR) 510.
  • the DRX cycle 500 includes, for example, a long DRX cycle applied in a range between 10 subframes and 2560 subframes, and another example is a short DRX cycle applied in a range of 2 subframes to 640 subframes. DRX cycle).
  • the short term DRX cycle is applied only while the DRX short cycle timer (drxShortCycleTimer) is operating, and the long term DRX cycle is applied outside the DRX short cycle timer.
  • the DRX short cycle timer one short DRX cycle becomes a basic unit.
  • the length of the short-term DRX cycle timer may be 1 to 16, for example.
  • the RRC layer manages several timers to control the DRX operation.
  • Timers controlling the DRX operation include a duration timer (onDurationTimer), a DRX inactivity timer (DRxInactivity Timer), a DRX retransmission timer (drxRetransmission Timer).
  • the duration timer is started by the start of the DRX cycle. In other words, the start of the duration timer coincides with the start of the DRX cycle.
  • the duration timer increases by 1 for every PDCCH subframe.
  • the duration timer expires when the duration timer value becomes equal to a preconfigured expiration value.
  • the duration timer is valid until the duration timer value is equal to the expiration value.
  • the DRX inactivity timer may be defined as the number of consecutive PDCCH subframes from the time point of successfully decoding the PDCCH for uplink or downlink user data transmission. Since continuous data reception may occur, it is time for the UE to continuously monitor the PDCCH.
  • the DRX Inactivity Timer is started or restarted when the UE successfully decodes the PDCCH for HARQ initial transmission in the PDCCH subframe.
  • the DRX retransmission timer is a timer that operates based on the maximum number of consecutive numbers of PDCCH subframes for which downlink retransmission is expected by the terminal soon.
  • the DRX retransmission timer is a timer that is started when the retransmission data is not received even though the HARQ RTT timer has expired.
  • the terminal may monitor the reception of data retransmitted in the HARQ process while the DRX retransmission timer is in progress.
  • the configuration of the DRX retransmission timer is defined by the MAC-MainConfig message of the RRC layer.
  • the time that the duration timer, the DRX inactivity timer, or the DRX retransmission timer is in progress is called an active time.
  • the activity time may mean all sections in which the terminal is awake.
  • the non-active time of the DRX cycle 500 may be referred to as non-active time.
  • the inactivity time may be called a wake up interval, and the inactivity time may be called a sleep interval.
  • the UE monitors the PDCCH for the PDCCH subframe during the active time.
  • the PDCCH subframe means a subframe including the PDCCH.
  • DwPTS downlink pilot time slot
  • the timer unit of a DRX timer such as a duration timer, a DRX inactivity timer, or a DRX retransmission timer, is a PDCCH subframe (psf). That is, DRX timers are counted based on the number of PDCCH subframes.
  • DRX-Cycle long DRX cycle
  • drxStartOffset DRX start offset
  • drxShortCycleTimer DRX short cycle timer
  • shortDRX-cycle shortDRX-Cycle
  • RTT round trip time
  • the DRX start offset is a value that defines the subframe where the DRX cycle 500 begins.
  • the DRX short cycle timer is a timer that defines the number of consecutive subframes that the UE must follow in the short DRX cycle.
  • the HARQ RTT timer is a timer that defines the minimum number of subframes before the interval in which downlink HARQ retransmission is expected by the UE.
  • the DRX configuration information may be received by being included in a MAC-MainConfig message, which is an RRC message used to specify a main configuration of a MAC layer for a signaling radio bearer (SRB) and a data radio bearer (DRB).
  • DRX configuration information may be configured, for example, as shown in the table below.
  • the DRX configuration information includes an onDurationTimer field defining a value of a duration timer, a drx-InactivityTimer field indicating a value of a DRX inactivity timer, and a drx-RetransmissionTimer field indicating a value of a DRX retransmission timer. do.
  • the DRX configuration information includes a longDRX-CycleStartOffset field indicating a length of a long DRX cycle and a starting subframe, and a shortDRX field regarding a short DRX that may be configured as optional.
  • the shortDRX field specifically includes a shortDRX-Cycle subfield indicating the length of a short DRX cycle and a drxShortCycleTimer subfield indicating a value of a short term DRX cycle timer in which the UE is continuous.
  • the onDurationTimer field may be set to any one of ⁇ psf1, psf2, psf3, ... psf200 ⁇ .
  • the drx-InactivityTimer field may be set to any one of ⁇ psf1, psf2, psf3, ... psf2560 ⁇ .
  • the drx-InactivityTimer field psf3
  • the DRX Inactivity Timer progresses up to three PDCCH subframes cumulatively including the subframe at the time when it is driven and then expires.
  • the drx-RetransmissionTimer field may be set to any one of ⁇ psf1, psf2, psf4, ...
  • the DRX retransmission timer expires after progressing up to four PDCCH subframes including the subframe at the time when it is driven.
  • the longDRX-CycleStartOffset field may be set to any one of values of ⁇ sf10, sf20, sf32, sf40, ... sf2560 ⁇ as the length of a long DRX cycle, and the subframe where the long DRX cycle starts is the length of the long DRX cycle.
  • the value may be set to any one of ⁇ INTEGER (0..9), INTEGER (0..19), INTEGER (0..31), ... INTEGER (0..2559) ⁇ .
  • the longDRX-CycleStartOffset field sf20, INTEGER (0..19)
  • one long DRX cycle includes 20 subframes
  • the long DRX cycle includes any subframe of subframe indexes 0 to 19.
  • This long term DRX cycle start subframe may be selected.
  • the shortDRX-Cycle subfield constituting the shortDRX field may be set to any one of ⁇ sf2, sf5, sf8, ... sf640 ⁇ .
  • step S420 the base station reconfigures the RRC related parameters, particularly the DRX related parameters based on the terminal preference information, and transmits them to the terminal.
  • the reconfiguration of the RRC related parameters may be performed as follows. have.
  • the base station may maintain the RRC related parameter that has been previously configured. Therefore, in this case, S420 may be omitted.
  • the base station may reconfigure RRC related parameters to increase transmission efficiency. For example, when the base station is configured only with long-term DRX, and the short-term DRX is not configured, the base station may perform DRX reconfiguration to add a short-term DRX configuration to the terminal to reflect the normal state.
  • the base station may also reconfigure the DRX inactivity timer and DRX retransmission timer and the like for a predetermined time or more.
  • the base station may reconfigure the number n of subframes applied to one cycle of the DRX by one step shorter than the conventional one, and may reconfigure the duration timer by one step longer than the conventional one.
  • the base station may also reconfigure the DRX inactivity timer and the DRX retransmission timer to one step longer than before. In this case, the active time for the UE to monitor the PDCCH subframe occurs more frequently or longer, and the downlink transmission efficiency may be improved as compared with the case of the low power consumption state described later.
  • the UE since the UE may operate more frequently in the active time due to the decrease in the DRX cycle length, and the UE may operate in the active time for a longer time due to the increase in the duration timer time. In this case, the transmission efficiency may be improved than in the case of the low power consumption state described later.
  • the base station when the power preference indicator indicates a normal state, the base station can give more scheduling opportunities in a relatively unit time for the terminal, thereby ensuring sufficient QoS to the terminal.
  • the base station may support QoS for the terminal having a relatively short packet delay budget. This will be described later.
  • the base station may perform RRC related parameter reconfiguration with a configuration that may reduce battery consumption of the terminal. For example, the base station reconfigures (or configures) DRX so that the terminal operates in a long-term DRX mode. Alternatively, the DRX may be reconfigured to maintain a longer inactivity time of the terminal. In this case, the base station may perform DRX reconfiguration so that the terminal does not operate in the short-term DRX mode, but operates in the long-term DRX mode.
  • the base station may remove the short term DRX configuration.
  • the base station may also reconfigure the DRX inactivity timer and DRX retransmission timer and the like to a predetermined time or less.
  • the base station may reconfigure the number n of subframes applied to one cycle of the DRX to a value one step longer than before and may reconfigure the duration timer to one step shorter than before.
  • the base station may also reconfigure the DRX inactivity timer and the DRX retransmission timer to one step shorter than before.
  • the cycle for monitoring the PDCCH by the UE becomes long, thereby reducing power consumption of the UE.
  • the duration timer, the DRX inactivity timer, and the DRX retransmission timer are related to the number of times of reception of the PDCCH subframe, reconfiguring them into less time may have an effect in terms of power saving of the UE. Can be.
  • the terminal may transmit power preference information of the terminal to the base station, and the base station may reconfigure the RRC related parameters in the terminal in consideration of the power preference state of the terminal based on the power preference information.
  • the base station may not satisfy the QoS required by the service provided to the terminal. For example, when the power preference state of the terminal is a low power consumption state, or when the base station reconfigures the RRC related parameters based on the low power consumption state, the base station reconfigures (or configures) DRX to operate in a long-term DRX mode. do or.
  • the DRX is reconfigured so that the inactivity time of the terminal is maintained longer, it may be difficult to satisfy the QoS for the service provided by the base station to the terminal due to a scheduling delay.
  • the base station manages QoS through QCI mapping to bearers
  • the bearers may be configured as follows.
  • FIG. 6 shows a structure of a bearer service in a wireless communication system to which the present invention is applied.
  • bearers provided by the wireless communication system are collectively referred to as EPS (Evolved Packet System) bearers.
  • the EPS bearer is a transmission path generated between the UE and the P-GW.
  • EPS bearer types include a default bearer and a dedicated bearer.
  • an IP address is assigned and a default EPS bearer is created while creating a PDN connection. That is, a default bearer is first created when a new PDN connection is created. The default bearer remains until the PDN connection is terminated.
  • a service for example, the Internet, etc.
  • VoD for example, VoD, etc.
  • a dedicated bearer is created. In this case, the dedicated bearer may be set to a different QoS from the bearer that is already set.
  • QoS parameters applied to the dedicated bearer are provided by a Policy and Charging Rule Function (PCRF).
  • PCRF Policy and Charging Rule Function
  • the PCRF may receive the subscription information of the user from the Subscriber Profile Repository (SPR) to determine the QoS parameter.
  • SPR Subscriber Profile Repository
  • up to 15 dedicated bearers may be created, for example, and four of the 15 are not currently used in LTE systems. Therefore, up to 11 dedicated bearers can be created.
  • the EPS bearer includes a QoS Class Identifier (QCI) and an Allocation and Retention Priority (ARP) as basic QoS parameters.
  • QCI is a scalar that is used as a reference to access node-specific parameters that control bearer level packet forwarding treatment, and the scalar value is assigned to an operator owning a base station. Pre-configured by For example, the scalar may be preconfigured with any one of integer values 1 to 9.
  • ARP The main purpose of ARP is to determine whether a bearer's establishment / modification request is accepted or needs to be rejected in case of resource limitations.
  • ARP can also be used to determine which bearer (s) to drop by the base station during exceptional resource limitations, for example at handover.
  • EPS bearers are divided into GBR (Guaranteed Bit Rate) bearers and non-GBR bearers.
  • the default bearer is always a non-GBR type bearer, and the dedicated bearer may be a GBR type or non-GBR type bearer.
  • the GBR bearer is further associated with a guaranteed bit rate (GBR) and a maximum bit rate (MBR) as QoS parameters.
  • GBR notes a bit rate that can be expected to be provided by the EPS bearer.
  • MBR limits the bit rate that can be expected to be provided by the EPS bearer.
  • the GBR may indicate information about a bit rate that should be guaranteed at least, and the MBR may indicate information about a maximum bit rate allowance in order to prevent excessive use of resources when the bit rate guaranteed by the GBR is acceptable. That is, the GBR bearer may mean that fixed resources are allocated for each bearer (bandwidth guarantee).
  • non-GBR bearers are associated with Aggregated Maximum Bit Rate (AMBR) as a QoS parameter in addition to QCI and ARP, which means that the maximum number that can be used with other non-GBR bearers instead of being allocated resources per bearer. This means that bandwidth is allocated.
  • AMBR may define an aggregate bit rate that can be expected to be provided for a non-GBR bearer. That is, the AMBR may indicate information on the maximum bandwidth that can be allocated for the non-GBR bearer.
  • P-GW Packet Gateway
  • EPS bearer is defined between the terminal and the P-GW.
  • EPS bearer is further subdivided between nodes, defined as RB between UE and BS, S1 bearer between BS and S-GW, and S5 / S8 bearer between S-GW and P-GW in EPC. do.
  • Each bearer is defined through QoS.
  • QoS is defined through data rate, error rate, delay, and the like.
  • each QoS is determined for each interface.
  • Each interface establishes a bearer according to the QoS that it must provide.
  • bearers of each interface provide QoS of all EPS bearers by interface, EPS bearers, RBs, and S1 bearers are all in a one-to-one relationship.
  • Table 2 shows the QCI table representing the characteristics of QoS classes.
  • the base station may allocate a QCI in a bearer establishment or modification procedure and check the same.
  • the Packet Delay Budget represents the upper bound of the allowable delay time for the corresponding QCI
  • the PELR represents the allowable Packet Error Loss Rate of the corresponding QCI. The upper limit is shown.
  • QoS assigned to the bearer is managed by QCI and managed according to each characteristic of QCI index 1 to 9.
  • bearers with QoS corresponding to QCI indexes 6, 8, and 9 have a packet delay budget of 300 ms, which is used for a relatively large service, and a resource type of non-GBR.
  • Bearers having QoS corresponding to QCI index 4 have a packet delay budget of 300 ms and a relatively large value, but have a resource type of GBR.
  • the base station in providing a service to a terminal, the base station should be able to support QoS required by the corresponding service. This is generally the case even when the base station receives power preference information from the terminal and performs RRC related parameter reconfiguration based on the power preference state of the terminal. Therefore, when the power preference state of the terminal is a low power consumption state, when the necessity of battery saving is large from the viewpoint of the terminal, or when the packet delay budget is relatively small, such as when the QCI index for the service provided to the terminal is 5, the base station From the standpoint, the RRC-related parameter reconstruction may not be performed by reflecting a low power consumption state of the terminal. This is because the base station needs to provide and maintain the QoS provided to the terminal.
  • the terminal does not limit or support QoS support for a service provided by the base station to the terminal for power saving.
  • the terminal may be in a temporary battery problem or a limited power situation, and the terminal may identify the situation and allow continuous or temporary limitation of QoS for power saving.
  • the base station can only check the power preference state of the terminal through the power preference information provided by the terminal, and further, if the terminal allows a certain degree of QoS, or in certain cases, further power saving.
  • Priority information cannot be confirmed by the base station whether the base station requests to ignore the QoS required by the corresponding QCI. Therefore, in supporting terminal power preferences in a base station and a terminal, a method of considering a terminal's preference for QoS for a service provided by the base station to the terminal is required.
  • the UE power preference support procedure considering QoS according to the present invention may be performed as follows.
  • FIG. 7 is a flowchart illustrating a power preference support procedure of a terminal considering QoS according to an embodiment of the present invention.
  • the base station transmits an RRC connection reconfiguration message to the terminal (S700).
  • the RRC connection reconfiguration message includes power preference indicator-enabled information and power preference indicator-timer information.
  • the power preference indicator-enabled information is information for allowing or instructing a terminal capable of transmitting a power preference indicator to transmit the power preference indicator to a base station.
  • the power preference indicator-timer information includes time information regarding a power preference indicator prohibit timer.
  • the PPI prohibit timer may indicate a minimum time interval for the terminal to transmit the power preference indicator.
  • the terminal transmits a terminal assistance information message to the base station (S710).
  • the terminal assistance information message includes a power preference indicator.
  • the terminal assistance information message is an RRC only message.
  • the terminal assistance information message may include a QoS Preference Indication (QPI).
  • QPI QoS Preference Indication
  • the QoS preference indicator may be included with the power preference indicator when the terminal assistance information message includes the power preference indicator, or the QoS preference indicator may be low in the power preference state of the terminal indicated by the power preference indicator. It may optionally be included only when it is in a power consumption state.
  • the QoS preference indicator indicates a terminal's preference for QoS, and the base station may reconfigure RRC related parameters in the terminal in consideration of both the power preference indicator and the QoS preference indicator.
  • the QoS preference indicator may be referred to as QoS information (QoSinfo), QoS priority information (QoSPriorityInfo), or QoS hold (QoSHold).
  • the QoS preference indicator may instruct the packet delay budget to guarantee the QoS of the bearer corresponding to the QCI below or below a certain level.
  • the packet delay budget of the QCI for the bearer is below (or below) a certain level, even if the UE's power preference state is low power consumption, the base station is based on the QoS preference indicator to provide a low QoS guarantee.
  • RRC-related parameter reconfiguration according to the power consumption may not be performed.
  • the QoS affinity indicator indicates support or value 1, QCI index 1 that does not correspond to QCI indexes 4, 6, 8, and 9 with a packet delay budget of 300 ms or more for the bearer.
  • the packet delay budget is less than 300ms
  • the base station does not reconstruct the RRC-related parameters based on the low power consumption state to guarantee QoS to the terminal, or Performs RRC related parameter reconstruction based.
  • the base station may perform RRC related parameter reconfiguration based on a low power consumption state regardless of the packet delay budget of the QCI for the bearer. For example, even when there is a bearer corresponding to QCI indexes 1, 2, 3, 5, and 7 having a packet delay of 300 ms or less, RRC-related parameter reconstruction based on a low power consumption state may be performed.
  • the base station may not be able to guarantee QoS for the QCI indexes 1,2,3,5,7.
  • the UE may determine that low power consumption is given priority over whether QoS is guaranteed and may perform the RRC parameter reconfiguration.
  • the QoS preference indicator may indicate to guarantee the QoS of the bearer corresponding to the QCI whose resource type is GBR.
  • the base station may guarantee QoS and may not perform RRC related parameter reconfiguration or RRC related parameter reconfiguration.
  • the QoS affinity indicator indicates support or a value of 1
  • the base station guarantees QoS for the bearer, and for the bearer
  • RRC-related parameter reconfiguration based on low power consumption may be performed regardless of QoS.
  • the base station may perform RRC related parameter reconfiguration based on a low power consumption state without guaranteeing QoS for the bearer. That is, even for a GBR bearer, radio resource reconfiguration may be performed based on a low power consumption state without guaranteeing QoS. Or it may be set to the opposite case by the appointment between the terminal and the base station.
  • the QoS preference indicator may indicate whether a QoS guarantee is reserved (or violated). In other words, the QoS preference indicator may indicate whether or not the base station guarantees QoS in providing a service to the terminal. Specifically, for example, if the QoS preference indicator indicates no support or a value of 0, the base station may ignore the QoS for the bearer and perform RRC related parameter reconfiguration based on a low power consumption state. In addition, if the QoS preference indicator indicates support or a value of 1, the base station performs RRC related parameter reconfiguration based on low power consumption state or does not perform RRC related parameter reconfiguration based on low power consumption state while guaranteeing QoS for the bearer. Or RRC related parameter reconstruction based on the normal state.
  • the above-described values 0 and 1 mean that the QoS preference state of the UE can be represented by setting the opposite direction by the base station and the UE.
  • the terminal assistance information message including the power preference indicator and the QoS preference indicator may be configured as a syntax as shown in Table 3, for example.
  • the terminal assistance information message includes a powerPrefIndication-r11 information element (IE).
  • the powerPrefIndication-r11 information element is used to provide information related to the power preference of the terminal, that is, the power saving preference of the terminal.
  • the powerPrefIndication-r11 information element may be configured as shown in Table 4, for example.
  • the powerPrefIndication-r11 information element includes a PowerConsumptionPref field and a QoSInfoindication field.
  • the PowerConsumptionPref field is a power preference indicator of the terminal, which indicates a power preference state of the terminal, and may indicate a normal state and a low power consumption state.
  • the QoSInfoindication field is a QoS preference indicator of the terminal, and may indicate a preference state of the terminal with respect to QoS guarantee (or QoS violation) according to a setup value.
  • the packet delay budget may be instructed to guarantee the QoS of the bearer corresponding to the QCI below (or below) a certain level. Specifically, for example, if the QoS preference indicator indicates a setup value of 1, QCI indexes 1, 2, and 3 that do not correspond to QCI indexes 4, 6, 8, and 9 whose packet delay budget for the bearer is 300 ms or more. If the packet delay budget is less than 300ms, the base station does not reconfigure the RRC related parameters based on the low power consumption state to guarantee QoS to the UE or reconfigure the RRC related parameters based on the normal state. Do this. In addition, when the QoS preference indicator indicates a setup value of 0, the base station may perform RRC related parameter reconfiguration based on a low power consumption state regardless of the packet delay budget of the QCI for the bearer.
  • the base station may indicate QoS of a bearer corresponding to QCI whose resource type is GBR.
  • the QoS preference indicator indicates a setup value of 1
  • the base station guarantees QoS for the bearer, and the QCI for the bearer.
  • the base station may perform RRC related parameter reconfiguration based on a low power consumption state without guaranteeing QoS for the bearer. That is, even for a GBR bearer, radio resource reconfiguration may be performed based on a low power consumption state without guaranteeing QoS.
  • the QoS guarantee may be indicated. Specifically, for example, if the QoS preference indicator indicates a setup value of 0, the base station may ignore the QoS for the bearer and perform RRC related parameter reconfiguration based on a low power consumption state. In addition, if the QoS preference indicator indicates a setup value of 1, the base station performs RRC related parameter reconfiguration based on low power consumption state or no RRC related parameter reconfiguration based on low power consumption state while guaranteeing QoS for the bearer. RRC related parameter reconstruction based on the normal state may be performed.
  • the above-mentioned QoSInfoindication field may indicate a preference state of the UE for QoS guarantee only when the PowerConsumptionPref field is in a low power consumption state.
  • the QoSInfoindication field may be replaced with another term such as QoSInfoPref, QoSGuaranteePref, or QoSSupportPref by an appointment between the terminal and the base station. Same as below.
  • the terminal assistance information message including the power preference indicator and the QoS preference indicator may be configured as a syntax of Table 5 as another example.
  • the terminal assistance information message includes a powerPrefIndication-r11 information element and a qosInfoindication-r11 information element.
  • the powerPrefIndication-r11 information element is used to provide information related to the power preference of the terminal, that is, the power saving preference of the terminal.
  • the qosInfoindication-r11 information element may always be present if the powerPrefIndication-r11 information element is present, and the qosInfoindication-r11 information element may be optionally present only when the PowerConsumptionPref field included in the powerPrefIndication-r11 information element indicates low power consumption. It may be.
  • the powerPrefIndication-r11 information element may be configured as shown in Table 6, for example.
  • the powerPrefIndication-r11 information element includes a PowerConsumptionPref field.
  • the PowerConsumptionPref field is a power preference indicator of the terminal, which indicates a power preference state of the terminal, and may indicate a normal state and a low power consumption state.
  • the qosInfoindication-r11 information element may be configured as shown in Table 7, for example.
  • the qosInfoindication-r11 information element includes a QoSInfoindication field.
  • the QoSInfoindication field is a QoS preference indicator of the UE and indicates the UE's preference state for QoS guarantee according to the setup value.
  • the QoSInfoindication field may indicate a preference state of the terminal for QoS guarantee only when the PowerConsumptionPref field is in a low power consumption state.
  • the QoSInfoindication field is a QoS preference indicator of the UE.
  • the QoSInfoindication field may indicate that a packet delay budget guarantees QoS of a bearer corresponding to a QCI of a predetermined level or less (or less).
  • it may be indicated to guarantee QoS of a bearer corresponding to QCI whose resource type is GBR.
  • the QoS guarantee may be indicated.
  • the base station reconfigures an RRC related parameter, for example, a DRX related parameter, based on the terminal assistance information message received in S710, and transmits an RRC connection reconfiguration message including the same to the terminal (S720). .
  • an RRC related parameter for example, a DRX related parameter
  • the terminal assistance information message includes a power preference indicator. Based on the power preference indicator, the base station reconfigures RRC related parameters including DRX related parameters and the like corresponding to the power preference state of the terminal indicated by the power preference indicator of the terminal, and reconfigures the RRC connection transmitted by the base station to the terminal. It can be transmitted to the terminal through a message.
  • the DRX related parameter reconstruction includes the contents described in S420.
  • the terminal assistance information message may include a QoS Preference Indication (QPI).
  • QPI QoS Preference Indication
  • the QoS preference indicator may be included together with the power preference indicator when the terminal assistance information message includes the power preference indicator as described above, or the QoS preference indicator is the power of the terminal indicated by the power preference indicator. It may be selectively included only when the preference state is a low power consumption state.
  • the base station may reconfigure the RRC related parameters in the terminal in consideration of both the power preference indicator and the QoS preference indicator.
  • the base station determines an RRC related parameter including a DRX related parameter based on the power preference indicator.
  • the power preference indicator of the terminal may be reconfigured according to the power preference state indicated by the terminal, and may be transmitted to the terminal through an RRC connection reconfiguration message transmitted by the base station to the terminal.
  • the QoS guarantee may be set to be prioritized by an appointment of the terminal and the base station, and the base station may reconfigure the RRC related parameters only within the scope of the QoS guarantee.
  • QoS guarantee may be ignored by appointment of the terminal and the base station, and the power preference state of the terminal indicated by the power preference indicator may be set to take priority.
  • RRC related parameters may be reconfigured according to the preference state.
  • the base station when the terminal assistance information message includes both the power preference indicator and the QoS preference indicator, and the power preference indicator indicates a low power consumption state, the base station is in a state indicated by the QoS preference indicator.
  • RRC-related parameters may be reconfigured correspondingly.
  • the base station determines that the power preference state of the terminal is low power consumption. Nevertheless, based on the QoS preference indicator, RRC-related parameter reconfiguration according to the low power consumption state may not be performed to guarantee QoS.
  • the QoS preference indicator indicates 1, QCI indexes 1, 2, 3, 5, and 7 that do not correspond to QCI indexes 4, 6, 8, and 9 whose packet delay budgets for the bearer are 300 ms or more.
  • the base station does not perform RRC related parameter reconfiguration based on the low power consumption state or performs RRC related parameter reconfiguration based on the normal state to guarantee QoS to the UE.
  • the base station may perform RRC related parameter reconfiguration based on the low power consumption state regardless of the packet delay budget of the QCI for the bearer.
  • the base station guarantees the QoS to perform RRC related parameter reconfiguration or RRC related parameter reconfiguration.
  • the base station guarantees the QoS to perform RRC related parameter reconfiguration or RRC related parameter reconfiguration.
  • the QoS preference indicator indicates 1
  • the QBR for the bearer is a GBR type bearer having 1, 2, 3, or 4
  • the base station guarantees QoS for the bearer
  • the QCI for the bearer is 5
  • RRC related parameter reconfiguration based on low power consumption may be performed regardless of QoS.
  • the base station may perform RRC related parameter reconfiguration based on a low power consumption state without guaranteeing QoS for the bearer. That is, even for a GBR bearer, radio resource reconfiguration may be performed based on a low power consumption state without guaranteeing QoS. Or it may be set to the opposite case by the appointment between the terminal and the base station.
  • the status indicated by the QoS preference indicator indicates whether the QoS guarantee is reserved (or violated), that is, the status indicated by the QoS preference indicator indicates that the base station provides the service to the terminal. Or base station does not perform RRC related parameter reconstruction based on the low power consumption state, prioritizing the QoS guarantee, or ignores the QoS guarantee, and performs RRC related based on low power consumption state. Parameter reconstruction can be performed. Specifically, for example, if the QoS preference indicator indicates 1, the base station may ignore the QoS for the bearer and perform RRC related parameter reconfiguration based on the low power consumption state.
  • the base station performs RRC related parameter reconfiguration based on low power consumption state or does not perform RRC related parameter reconfiguration based on low power consumption state or normal state while guaranteeing QoS for bearer.
  • RRC-related parameter reconstruction based on may be performed.
  • the base station transmits the reconfigured RRC related parameters to the terminal through an RRC connection reconfiguration message.
  • the base station can not only inform the terminal by reconfiguring the RRC-related parameters based on the power preference of the terminal, the terminal can inform the base station of the preference for its QoS, the base station is The preference of the QoS of the UE may be checked, and RRC-related parameter reconfiguration may be adaptively performed. That is, the base station may support the terminal power preference in consideration of the terminal's preference for QoS guarantee.
  • the efficiency of power saving is allowed by limiting or not supporting QoS support for the service provided by the base station to the terminal for power saving. Can increase.
  • FIG. 8 is a flowchart illustrating a method for supporting power preference of a terminal by a terminal according to an embodiment of the present invention.
  • the terminal receives an RRC connection reconfiguration message from the base station (S800).
  • the RRC connection reconfiguration message includes power preference indicator-enabled information and power preference indicator-timer information.
  • the power preference indicator-enabled information is information for allowing or instructing a terminal capable of transmitting a power preference indicator to transmit the power preference indicator to a base station.
  • the power preference indicator-timer information includes time information regarding a power preference indicator prohibit timer.
  • the PPI prohibit timer may indicate a minimum time interval for the terminal to transmit the power preference indicator. For example, when the PPI prohibit timer is set to 5 minutes based on the power preference indicator-timer, the terminal may transmit the power preference indicator at least 5 minutes.
  • the terminal after transmitting the power preference indicator, the terminal sets and operates the PPI prohibit timer based on the power preference indicator-timer and cannot transmit the power preference information of the terminal again during the operation of the PPI prohibit timer. This may be the same even when the power preference state of the terminal is changed.
  • the terminal transmits a terminal assistance information message to the base station (S810).
  • the terminal assistance information message includes a power preference indicator.
  • the terminal assistance information message may be an RRC dedicated message.
  • the terminal assistance information message may include a QoS preference indicator.
  • the QoS preference indicator may be included with the power preference indicator when the terminal assistance information message includes the power preference indicator, or the QoS preference indicator may be low in the power preference state of the terminal indicated by the power preference indicator. It may optionally be included only when it is in a power consumption state.
  • the QoS preference indicator indicates the terminal's preference for QoS.
  • the terminal assistance information message may be configured by, for example, a syntax as shown in Table 3 below.
  • the power preference indicator and QoS preference indicator may be configured as shown in Table 4.
  • the terminal assistance information message may be configured as a syntax of Table 5 as another example.
  • the power preference indicator may be configured as shown in Table 6, and the QoS preference indicator may be configured as shown in Table 7.
  • the terminal receives an RRC connection reconfiguration message from the base station (S820).
  • the RRC connection message may include an RRC related parameter reconfigured by the base station based on the terminal assistance information, for example, a DRX related parameter.
  • the DRX related parameter reconstruction includes the contents described in S420.
  • the terminal may reconfigure the RRC related parameters received through the RRC connection reconfiguration message to the terminal.
  • FIG. 9 is a flowchart illustrating a method for supporting power preference of a terminal by a base station according to an embodiment of the present invention.
  • the base station transmits an RRC connection reconfiguration message to the terminal (S900).
  • the RRC connection reconfiguration message includes power preference indicator-enabled information and power preference indicator-timer information.
  • the power preference indicator-enabled information is information for allowing or instructing a terminal capable of transmitting a power preference indicator to transmit the power preference indicator to a base station.
  • the power preference indicator-timer information includes time information regarding a power preference indicator prohibit timer.
  • the PPI prohibit timer may indicate a minimum time interval for the terminal to transmit the power preference indicator.
  • the base station receives a terminal assistance information message from the terminal (S910).
  • the terminal assistance information message includes a power preference indicator.
  • the terminal assistance information message is an RRC only message.
  • the terminal assistance information message may include a QoS preference indicator.
  • the QoS preference indicator may be included with the power preference indicator when the terminal assistance information message includes the power preference indicator, or the QoS preference indicator may be low in the power preference state of the terminal indicated by the power preference indicator. It may optionally be included only when it is in a power consumption state.
  • the QoS preference indicator indicates the terminal's preference for QoS.
  • the terminal assistance information message may be configured by, for example, a syntax as shown in Table 3 below.
  • the power preference indicator and QoS preference indicator may be configured as shown in Table 4.
  • the terminal assistance information message may be configured as a syntax of Table 5 as another example.
  • the power preference indicator may be configured as shown in Table 6, and the QoS preference indicator may be configured as shown in Table 7.
  • the base station reconfigures an RRC related parameter, for example, a DRX related parameter, based on the terminal assistance information message received in S910, and transmits an RRC connection reconfiguration message including the same to the terminal (S920).
  • an RRC related parameter for example, a DRX related parameter
  • the terminal assistance information message includes a power preference indicator. Based on the power preference indicator, the base station reconfigures RRC related parameters including DRX related parameters and the like corresponding to the power preference state of the terminal indicated by the power preference indicator of the terminal, and reconfigures the RRC connection transmitted by the base station to the terminal. It can be transmitted to the terminal through a message.
  • the DRX related parameter reconstruction includes the contents described in S420.
  • the terminal assistance information message may include a QoS Preference Indication (QPI).
  • QPI QoS Preference Indication
  • the QoS preference indicator may be included together with the power preference indicator when the terminal assistance information message includes the power preference indicator as described above, or the QoS preference indicator is the power of the terminal indicated by the power preference indicator. It may be selectively included only when the preference state is a low power consumption state.
  • the base station may reconfigure the RRC related parameters in the terminal in consideration of both the power preference indicator and the QoS preference indicator.
  • the base station determines an RRC related parameter including a DRX related parameter based on the power preference indicator.
  • the power preference indicator of the terminal may be reconfigured according to the power preference state indicated by the terminal, and may be transmitted to the terminal through an RRC connection reconfiguration message transmitted by the base station to the terminal.
  • the QoS guarantee may be set to be prioritized by an appointment of the terminal and the base station, and the base station may reconfigure the RRC related parameters only within the scope of the QoS guarantee.
  • QoS guarantee may be ignored by appointment of the terminal and the base station, and the power preference state of the terminal indicated by the power preference indicator may be set to take priority, and the base station may set the power.
  • RRC related parameters may be reconfigured according to the preference state.
  • the base station when the terminal assistance information message includes both the power preference indicator and the QoS preference indicator, and the power preference indicator indicates a low power consumption state, the base station is in a state indicated by the QoS preference indicator.
  • RRC-related parameters may be reconfigured correspondingly.
  • the base station determines that the power preference state of the terminal is low power consumption. Nevertheless, based on the QoS preference indicator, RRC-related parameter reconfiguration according to the low power consumption state may not be performed to guarantee QoS. Specifically, for example, if the QoS affinity indicator indicates support or a value of 1, QCI indexes 1, 2, 3, 5 that do not correspond to QCI indexes 4, 6, 8, and 9 with a packet delay budget of 300 ms or more for the bearer.
  • the base station does not reconfigure the RRC related parameters based on the low power consumption state or performs the RRC related parameters reconfigured based on the normal state in order to guarantee QoS to the UE. do.
  • the base station may perform RRC related parameter reconfiguration based on a low power consumption state regardless of the packet delay budget of the QCI for the bearer.
  • the base station guarantees the QoS to perform RRC related parameter reconfiguration or RRC related parameter reconfiguration.
  • the QoS affinity indicator indicates support or a value of 1
  • the base station guarantees QoS for the bearer, and for the bearer
  • RRC-related parameter reconfiguration based on low power consumption may be performed regardless of QoS.
  • the base station may perform RRC related parameter reconfiguration based on a low power consumption state without guaranteeing QoS for the bearer. That is, even for a GBR bearer, RRC-related parameter reconfiguration may be performed based on a low power consumption state without guaranteeing QoS. Or it may be set to the opposite case by the appointment between the terminal and the base station.
  • the status indicated by the QoS preference indicator indicates whether the QoS guarantee is reserved (or violated), that is, the status indicated by the QoS preference indicator indicates that the base station provides the service to the terminal. Or base station does not perform RRC related parameter reconstruction based on the low power consumption state, prioritizing the QoS guarantee, or ignores the QoS guarantee, and performs RRC related based on low power consumption state. Parameter reconstruction can be performed. Specifically, for example, if the QoS preference indicator indicates no support or a value of 0, the base station may ignore the QoS for the bearer and perform RRC related parameter reconfiguration based on a low power consumption state.
  • the base station performs RRC related parameter reconfiguration based on low power consumption state or does not perform RRC related parameter reconfiguration based on low power consumption state while guaranteeing QoS for the bearer. Or RRC related parameter reconstruction based on the normal state.
  • the base station transmits the reconfigured RRC related parameters to the terminal through an RRC connection reconfiguration message.
  • the base station may reconfigure the RRC-related parameters in consideration of the power preference of the terminal as well as the QoS preference of the terminal, and may transmit it to the terminal through an RRC connection reconfiguration message.
  • FIG. 10 is a block diagram illustrating a terminal and a base station supporting power preference of another terminal according to an example of the present invention.
  • the terminal 1000 includes a terminal receiver 1005, a terminal processor 1010, and a terminal transmitter 1015.
  • the terminal processor 1010 includes a terminal message processor 1011 and a preference determiner 1012.
  • the terminal receiving unit 1005 receives power preference indicator-enabled information, power preference indicator-timer information, and RRC related parameters from the base station 1050 from the base station.
  • the power preference indicator-enabled information is information for allowing or instructing a terminal capable of transmitting a power preference indicator (PPI) to transmit the power preference indicator to a base station.
  • the power preference indicator-timer information includes time information regarding a PPI prohibit timer.
  • the PPI prohibit timer may indicate a minimum time interval for the terminal to transmit the power preference indicator.
  • the power preference indicator-enabled information and the power preference indicator-timer information may be included in an RRC connection reconfiguration message and transmitted from the base station 1050 to the terminal 1000.
  • the RRC-related parameter may be a parameter reconfigured by the base station 1050 based on the power preference indicator of the terminal 1000.
  • the RRC related parameter may include a DRX related parameter.
  • the RRC related parameter may be included in an RRC connection reconfiguration message and transmitted from the base station 1050 to the terminal 1000.
  • the terminal message processing unit 1011 analyzes or interprets the syntax of the information or the message received from the terminal receiving unit 1005.
  • the terminal message processing unit 1011 may interpret the syntax of Table 1.
  • the terminal message processing unit 1011 interprets the received RRC connection reconfiguration message and confirms that the power preference indicator transmission of the terminal 1000 is allowed or commanded based on the power preference indicator-enabled information included in the message. In addition, the message processing unit 1011 sets the time of the PPI prohibit timer of the terminal based on the power preference indicator-timer information included in the message. In addition, the terminal message processing unit 1011 may interpret the RRC connection reconfiguration message and obtain RRC related parameters.
  • the RRC related parameter may be a parameter reconfigured by the base station 1050 based on a power preference indicator of the terminal.
  • the RRC related parameter may include a DRX related parameter, and the DRX related parameter may include the content described in S420 and the content described in S720.
  • the terminal message processing unit 1011 may reconfigure (or apply) the RRC related parameters to the terminal.
  • the terminal message processing unit 1011 generates a terminal assistance information message.
  • the terminal message processing unit 1011 may generate the terminal assistance information message including at least one of a power preference indicator and a QoS preference indicator.
  • the terminal message processing unit 1011 may generate the terminal assistance information message including at least one of the power preference indicator and the QoS preference indicator based on the power preference state and / or the QoS preference state of the terminal.
  • the preference determiner 1012 determines the power preference state of the terminal 1000.
  • the preference determiner 1012 may determine one of the normal state and the low power consumption state as the power preference state of the terminal 1000.
  • the meanings of the normal state and the low power consumption state include the content described in S310.
  • the preference determiner 1012 determines the QoS preference state of the terminal 1000.
  • the preference determiner 1012 may determine, for example, the QoS preference state according to whether a packet delay budget does not guarantee QoS of a bearer corresponding to a QCI below or below a predetermined level.
  • the preference determiner 1012 determines the QoS preference state according to whether the 1000 QoS preference state of the UE guarantees QoS of a bearer corresponding to the QCI whose resource type is GBR. can do.
  • the preference determiner 1012 may determine the QoS preference state according to whether the terminal 1000 guarantees QoS.
  • the meaning and classification of the QoS preference state include the content described in S710.
  • the terminal transmitter 1020 may transmit the terminal assistance information message generated by the terminal message processor 1011 to the base station 1050.
  • the base station includes a base station transmitter 1055, a base station receiver 1060, and a base station processor 1070.
  • the base station processor 1070 includes a terminal message processing unit 1011 and a parameter changing unit 1072.
  • the base station transmitter 1055 may transmit power preference indicator-enabled information, power preference indicator-timer information, and RRC related parameters to the terminal 1000.
  • the power preference indicator-enabled information, power preference indicator-timer information, and RRC related parameters may be transmitted to the terminal 1000 through an RRC connection reconfiguration message.
  • the base station receiver 1060 receives the terminal assistance information message from the terminal 1000.
  • the terminal assistance information message includes the power preference indicator.
  • the terminal assistance information message may include the QoS preference indicator.
  • the base station message processing unit 1071 generates an RRC message.
  • the base station message processor 1071 may generate an RRC connection reconfiguration message including the power preference indicator-enabled information and the power preference indicator-timer information.
  • the base station message processor 1071 may generate an RRC connection reconfiguration message including the RRC related parameters received from the parameter changer 1072.
  • the base station message processing unit 1071 may generate a message having a syntax as shown in Table 2 above.
  • the base station message processing unit 1071 analyzes or interprets the syntax of the information or the message received from the base station receiving unit 1060.
  • the base station message processing unit 1071 may analyze or interpret a message having a syntax as shown in Tables 3 to 7.
  • the base station message processing unit 1071 analyzes or interprets the terminal assistance information message and checks the power preference state of the terminal 1000 indicated by the power preference indicator of the terminal 1000 included in the terminal assistance information message.
  • the power preference state of the terminal 1000 may be a normal state or a low power consumption state.
  • the base station message processing unit 1071 analyzes or interprets the terminal assistance information message and checks the QoS preference state of the terminal 1000 indicated by the QoS preference indicator of the terminal 1000 included in the terminal assistance information message.
  • the QoS preference state may indicate whether a packet delay budget guarantees QoS of a bearer corresponding to a QCI below a certain level (or below).
  • the QoS preference state may determine whether to guarantee the QoS of a bearer corresponding to the QCI whose resource type is GBR.
  • the QoS preference state may indicate whether the QoS guarantee is reserved.
  • the parameter changing unit 1072 may change or reconfigure RRC related parameters based on the power preference state and / or QoS preference state.
  • the parameter changing unit 1072 may change or reconfigure RRC related parameters by reflecting the power preference state.
  • the parameter changing unit 1072 may reconfigure DRX related parameters, in which case the DRX related parameter reconstruction includes the contents described in S420.
  • the parameter change unit 1072 when the power preference state of the terminal 1000 is the low power consumption state, the parameter change unit 1072 performs RRC related parameter reconfiguration in a direction to reduce battery consumption of the terminal. Specifically, for example, the parameter changing unit 1072 configures or reconfigures the DRX so that the terminal 1000 operates in the long-term DRX mode, or the DRX such that the inactivity time for which the terminal does not monitor the PDCCH subframe is maintained longer. Can be reconstructed.
  • the parameter change unit 1072 may perform the RRC related parameter reconstruction in a direction that can increase the transmission efficiency relatively compared to the low power consumption state. Specifically, for example, the parameter changer 1472 may configure the length of the DRX cycle shorter or reconfigure the DRX so that the inactivity time of the terminal 1400 is shorter to increase downlink transmission efficiency. have.
  • parameter changing unit 1072 may change or reconfigure RRC related parameters by reflecting the QoS preference state as well as the power preference state.
  • the parameter changing unit 1072 may determine that the power preference state of the terminal 1000 is set.
  • the QoS preference state based on the QoS preference state, RRC-related parameter reconfiguration according to the low power consumption state may not be performed to guarantee QoS.
  • the QoS affinity indicator indicates support or a value of 1, QCI indexes 1, 2, 3, 5 that do not correspond to QCI indexes 4, 6, 8, and 9 with a packet delay budget of 300 ms or more for the bearer.
  • the parameter change unit 1072 does not reconfigure the RRC-related parameters based on the low power consumption state in order to guarantee the QoS to the terminal 1000 or the normal state. Based on RRC-related parameter reconstruction can be performed.
  • the parameter change unit 1072 may perform RRC related parameter reconstruction based on a low power consumption state regardless of the packet delay budget of the QCI for the bearer.
  • the parameter changing unit 1072 may guarantee the QoS to perform RRC related parameter reconfiguration or to perform RRC related parameter reconfiguration. May not be performed.
  • the QoS preference indicator indicates support or value 1
  • the parameter changing unit 1072 may guarantee the QoS for the bearer.
  • RRC related parameter reconfiguration based on a low power consumption state may be performed regardless of QoS.
  • the parameter change unit 1072 may perform RRC related parameter reconstruction based on a low power consumption state without guaranteeing QoS for the bearer. That is, even for a GBR bearer, RRC-related parameter reconfiguration may be performed based on a low power consumption state without guaranteeing QoS. Or it may be set to the opposite case by the appointment between the terminal and the base station.
  • the parameter changing unit 1072 does not perform the RRC related parameter reconstruction based on the low power consumption state by giving priority to the QoS guarantee, or ignores the QoS guarantee and low power consumption.
  • RRC-related parameter reconstruction based on state may be performed. Specifically, for example, if the QoS preference indicator indicates no support or a value of 0, the parameter changing unit 1072 may ignore the QoS for the bearer and perform RRC related parameter reconstruction based on a low power consumption state. .
  • the parameter changing unit 1072 may perform RRC related parameter reconstruction based on the low power consumption state while guaranteeing QoS for the bearer or at least the RRC related based on the low power consumption state.
  • RRC-related parameter reconstruction may be performed without performing parameter reconstruction.
  • the parameter changing unit 1072 transmits the changed or reconfigured RRC related parameter to the base station message processing unit 1071.
  • the base station message processing unit 1071 generates an RRC connection reconfiguration message including the reconfigured RRC related parameters.
  • the RRC connection reconfiguration message may include a syntax as shown in Table 1 above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé permettant de prendre en charge une préférence de puissance d'un équipement d'utilisateur en considération d'une qualité de service (QoS) et un appareil associé, et lorsque l'équipement d'utilisateur transmet à la station de base une indication de préférence de puissance (PPI) indiquant un état de préférence de puissance et une indication de préférence de qualité de service (QPI) indiquant un état de préférence de qualité de service (QoS), la station de base peut reconfigurer un paramètre associé au RRC par rapport à l'équipement d'utilisateur sur la base de l'indication de préférence de puissance et de l'indication de préférence de qualité de service. Selon la présente invention, la station de base et l'équipement d'utilisateur prennent en considération la préférence de QoS de l'équipement d'utilisateur et reconfigurent de manière adaptative le paramètre associé au RRC.
PCT/KR2013/011487 2012-12-20 2013-12-11 Procédé et appareil permettant de prendre en charge la préférence de puissance d'un équipement d'utilisateur en considération de la qualité de service WO2014098409A1 (fr)

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KR10-2012-0149742 2012-12-20
KR1020120149742A KR20140080200A (ko) 2012-12-20 2012-12-20 ＱｏＳ를 고려한 단말의 파워 선호도 지원 방법 및 장치

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018212537A1 (fr) * 2017-05-15 2018-11-22 Samsung Electronics Co., Ltd. Procédé et appareil de commande d'informations de qos
CN112514463A (zh) * 2018-07-10 2021-03-16 高通股份有限公司 用于在通信系统中指示用户设备qos优先级高于用户设备约束的方法和装置
US20210120524A1 (en) * 2019-12-10 2021-04-22 Intel Corporation User equipment operation with multiple subscriber identity modules

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200098178A (ko) * 2019-02-12 2020-08-20 삼성전자주식회사 차세대 이동통신 시스템에서 전력 소모를 줄이기 위해 동적 스케쥴링을 적용하는 동작 방법 및 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070091898A1 (en) * 2005-10-24 2007-04-26 Ganesan Rengaraju Method for IP multimedia services session setup
US20090318131A1 (en) * 2008-06-19 2009-12-24 Aaron Jeffrey A Managing Multiple Cellular Quality of Service Mechanisms
KR20110057248A (ko) * 2008-09-19 2011-05-31 콸콤 인코포레이티드 네트워크 및 이동 장치 개시 서비스 품질
US20120275323A1 (en) * 2010-10-27 2012-11-01 Interdigital Patent Holdings, Inc. Scalable policy-controlled packet inspection systems and methods for advanced application interface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070091898A1 (en) * 2005-10-24 2007-04-26 Ganesan Rengaraju Method for IP multimedia services session setup
US20090318131A1 (en) * 2008-06-19 2009-12-24 Aaron Jeffrey A Managing Multiple Cellular Quality of Service Mechanisms
KR20110057248A (ko) * 2008-09-19 2011-05-31 콸콤 인코포레이티드 네트워크 및 이동 장치 개시 서비스 품질
US20120275323A1 (en) * 2010-10-27 2012-11-01 Interdigital Patent Holdings, Inc. Scalable policy-controlled packet inspection systems and methods for advanced application interface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL.: "Finalizing the UE power preference indication", R2-124964, 3GPP TSG-RAN WG MEETING #79BIS, 8 October 2012 (2012-10-08) - 12 October 2012 (2012-10-12), BRATISLAVA, SLOVAKIA, pages 1, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tscLj-an/wq2rl2/TSGR279bis/Docs> *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018212537A1 (fr) * 2017-05-15 2018-11-22 Samsung Electronics Co., Ltd. Procédé et appareil de commande d'informations de qos
US10892993B2 (en) 2017-05-15 2021-01-12 Samsung Electronics Co., Ltd. QoS information control method and apparatus
CN112514463A (zh) * 2018-07-10 2021-03-16 高通股份有限公司 用于在通信系统中指示用户设备qos优先级高于用户设备约束的方法和装置
US20210120524A1 (en) * 2019-12-10 2021-04-22 Intel Corporation User equipment operation with multiple subscriber identity modules
US11812405B2 (en) * 2019-12-10 2023-11-07 Intel Corporation User equipment operation with multiple subscriber identity modules

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