WO2014010863A1 - Procédé et appareil de transmission d'informations de préférence de terminal - Google Patents

Procédé et appareil de transmission d'informations de préférence de terminal Download PDF

Info

Publication number
WO2014010863A1
WO2014010863A1 PCT/KR2013/005910 KR2013005910W WO2014010863A1 WO 2014010863 A1 WO2014010863 A1 WO 2014010863A1 KR 2013005910 W KR2013005910 W KR 2013005910W WO 2014010863 A1 WO2014010863 A1 WO 2014010863A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
base station
preference
information
preference information
Prior art date
Application number
PCT/KR2013/005910
Other languages
English (en)
Korean (ko)
Inventor
정명철
안재현
허강석
Original Assignee
주식회사 팬택
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 팬택 filed Critical 주식회사 팬택
Publication of WO2014010863A1 publication Critical patent/WO2014010863A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • 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
    • 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
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to wireless communication, and more particularly, to a method and apparatus for transmitting preference information of a terminal.
  • the terminal should operate in consideration of power saving due to a limited battery such as a limited battery.
  • the terminal may use a discontinuous reception (DRX) scheme.
  • 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 when it is necessary to save the battery 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.
  • the setting of the wireless communication resource or the like may be changed according to the situation of the terminal. That is, in some cases, the radio communication resource setting preference of the terminal may be different. Nevertheless, the preference of the terminal is not considered in wireless communication between the base station and the terminal.
  • An object of the present invention is to provide a method and apparatus for transmitting terminal preference information in a wireless communication system.
  • Another technical problem of the present invention is to provide a method and apparatus for controlling the transmission of terminal preference information.
  • Another object of the present invention is to provide a method and apparatus for performing RRC related parameter reconfiguration based on UE preference information.
  • Another technical problem of the present invention is to provide a method and apparatus for performing DRX reconfiguration based on UE preference information.
  • a method of supporting a preference of the terminal performed by a terminal may include generating terminal preference information indicating a preferred operating state of the terminal and transmitting the terminal preference information to a base station, and includes a radio resource control (RRC) related parameter reconfigured by the base station based on the terminal preference information.
  • RRC radio resource control
  • a method for supporting preference of the terminal performed by a base station.
  • the method includes receiving terminal preference information indicating a preferred operation state of the terminal from the terminal, reconfiguring radio resource control related parameters based on the terminal preference information, and the reconfigured radio resource related parameters. And transmitting an RRC connection reconfiguration message to the terminal.
  • the terminal supporting the preference of the terminal.
  • the terminal includes a preference determination unit for determining an operation state preferred by the terminal, a message processing unit for generating terminal preference information indicating an operation state preferred by the terminal, a transmission unit for transmitting the generated terminal preference information to a base station, and And a receiver for receiving an RRC connection reconfiguration message including radio resource control related parameters reconfigured by the base station from the base station based on the terminal preference information, and a message processing unit configured to configure the RRC related parameters in the terminal. do.
  • a base station supporting a preference of a terminal includes a receiver for receiving terminal preference information indicating a preferred operation state of the terminal from the terminal, a parameter changing unit for reconfiguring radio resource control related parameters based on the terminal preference information, and the reconfigured radio resource related parameters. And a message processing unit for generating an RRC connection reconfiguration message, and a transmitter for transmitting the generated RRC connection reconfiguration message to the terminal.
  • the terminal may inform the base station of information on whether the terminal prefers a setting for reducing battery consumption or a setting for increasing data transmission efficiency.
  • the base station configures or reconfigures radio resource control related parameters based on the preference information of the terminal, so that the terminal may perform an operation corresponding to its own preference.
  • the base station can reduce the signaling congestion of the network by allowing the terminal to transmit the terminal preference information to the base station only through the terminal allowed through the preference support information, and by adjusting the time interval in which the terminal transmits the terminal preference information.
  • FIG. 1 shows a wireless communication system to which the present invention is applied.
  • FIG. 2 is a flowchart illustrating a method of supporting a preference of a terminal according to an embodiment of the present invention.
  • FIG. 3 is a conceptual diagram illustrating DRX related parameters and DRX operation reconfigured based on UE preference information according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a method of supporting a preference of a terminal according to another embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating a method of supporting a preference of a terminal according to another embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating a method of supporting a preference of a terminal according to another embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating an example of an operation in which UE preference information is transmitted through an RRC connection establishment process.
  • FIG. 8 is a flowchart illustrating another example of an operation in which UE preference information is transmitted through an RRC connection establishment process.
  • FIG. 9 is a flowchart illustrating still another example of an operation in which UE preference information is transmitted through an RRC connection establishment process.
  • FIG. 10 is a flowchart illustrating an operation of a terminal supporting a preference of a terminal according to an embodiment of the present invention.
  • FIG. 11 is a flowchart illustrating an operation of a base station supporting preference of a terminal according to an embodiment of the present invention.
  • FIG. 12 is a block diagram of a terminal and a base station supporting the preference of the terminal according to an embodiment 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 (BS) 11.
  • 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 in other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, an femto base station, a home nodeB, a relay, and the like.
  • eNB evolved-NodeB
  • 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 is a flowchart illustrating a method of supporting a preference of a terminal according to an embodiment of the present invention.
  • the terminal transmits UE preference information to the base station (S200).
  • the terminal preference information may be transmitted to a base station through a UE preference indication message.
  • the terminal preference information is information indicating a preferred operating state of the terminal. That is, the terminal may determine an operating state preferred by the terminal, generate the terminal preference information indicating the preferred operating state of the terminal, and transmit the generated preference information to the base station.
  • the terminal preference information may be, for example, information representing one of a default state, a low power consumption state, a transmission efficient state, and a traffic adaptive state. have.
  • the terminal preference information may be information indicating the default state.
  • the basic state refers to a state in which the terminal operates according to communication settings such as radio resources, power consumption, and DRX state configured in the network without any particular preference.
  • the base station may maintain the current communication configuration without considering traffic characteristics in particular.
  • the terminal does not have a particularly preferred communication configuration, and the base station uses the basic communication configuration.
  • the terminal preference information may be information indicating the low power consumption state.
  • the battery power saving state is a state in which the terminal operates while reducing battery consumption, and is a state requiring a related configuration so that the terminal can reduce 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 battery power saving state.
  • the terminal preference information may be information indicating the transmission efficient state.
  • the transmission efficiency state is a state in which a terminal requests a base station for a related configuration more centered on the transmission efficiency, although battery consumption is somewhat increased.
  • the terminal preference information may be information indicating the traffic adaptive state.
  • the traffic adaptation state may be a state of requesting a base station to consider a currently used application and / or traffic conditions.
  • the traffic adaptation state may indicate a situation in which the terminal may allow a delay for a predetermined time or more according to an application and traffic characteristics or a specific situation.
  • the traffic adaptive state may be referred to as a traffic sensitive state or a traffic selective state.
  • the operating state preferred by the terminal indicated by the terminal preference information may include not only the type of operating state preferred by the terminal but also a step or a level.
  • the preferred operating state of the terminal may also indicate any one of levels 1 to 3 according to its strength or necessity in indicating the battery power saving state. The same is true for battery operating states as well as other operating states.
  • the preferred operation state of the terminal indicated by the terminal preference information is up or down of a specific item (for example, power, transmission rate, etc.) related to the operation of the terminal in preparation for the current radio resource configuration of the terminal. ) May be indicated.
  • a specific item for example, power, transmission rate, etc.
  • the terminal's preferred operation state indicated by the terminal preference information indicates an upward power item, this allows for more power consumption compared to the radio resource configuration configured in the terminal, while transmitting (receiving) efficiency and the like. It may be a state that requires the base station to focus more on the performance (performance) of the terminal. This case may be the same as the transmission efficiency state.
  • the terminal's preferred operation state indicated by the terminal preference information indicates a downgrade of the power item
  • this may be a state in which a related configuration is required to reduce battery consumption in comparison with a radio resource configuration configured in the terminal. have.
  • This case may be the same as the battery power saving state.
  • the base station may focus more on transmission (reception) efficiency in comparison with a radio resource configuration configured in the terminal. It may be in a state that requires. This case may be the same as the transmission efficiency state.
  • the terminal's preferred operation state indicated by the terminal preference information indicates a downlink of the transmission rate item
  • the name and function of the operation state preferred by the terminal indicated by the terminal preference information described above may be set differently by an appointment between the terminal and the base station as an example.
  • the terminal preference information transmitted from the terminal to the base station in S200 is an operating state preferred by the operating terminal among various operating states, for example, the default state, the low power consumption state, and the transmission efficiency. (transmission efficient) and information indicating one of the traffic adaptive states directly, or information to toggle from one of the plurality of states to another. have.
  • the terminal preference information may be information that toggles from the default state to the battery power saving state or from the battery power saving state to the default state.
  • the terminal preference information may be information that toggles from the transmission efficiency state to the battery power saving state or from the battery power saving state to the transmission efficiency state.
  • the terminal preference information may be information for toggling from the basic state to the traffic adaptation state or from the traffic adaptation state to the basic state.
  • the terminal preference information may be at least 1 bit.
  • the terminal preference information is 1 bit, and the terminal may inform the base station whether the terminal is in the basic state or the battery power saving state based on the value of "0" or "1" of the 1 bit.
  • the terminal preference information is 1 bit, and the terminal may inform the base station whether it is in the battery power saving state or the transmission efficiency state based on the value of "0" or "1” of the 1 bit.
  • the terminal preference information is 1 bit, and the terminal may inform the base station whether it is in the transmission efficiency state or the traffic adaptation state based on the value of "0" or "1" of the 1 bit.
  • the terminal preference information is 1 bit, and the terminal may inform the base station whether the traffic adaptation state or the basic state is based on the value of "0" or "1" of the 1 bit.
  • the terminal preference information is 1 bit, and the terminal may inform the base station whether the battery is in the power saving state or the traffic adaptation state based on the value of "0" or "1” of the 1 bit.
  • the terminal preference information is 1 bit, and the terminal may inform the base station whether the traffic adaptation state or the basic state is based on a value of "0" or "1” of the 1 bit.
  • the terminal preference information is 1 bit, and the terminal may inform the base station whether the terminal is in the basic state or the transmission efficiency state based on the value of "0" or "1" of the 1 bit.
  • the terminal preference information is 2 bits, the operating state preferred by the terminal based on the value of "00", “01", “10”, or “11” of the two bits, for example, the basic state And inform the base station of any of the battery power saving state, the transmission efficiency state, and the traffic adaptation state.
  • the value "00” may indicate a basic state
  • the value "01” may indicate a battery power saving state
  • the value "10” may indicate a transmission efficiency state
  • the value "11” may indicate a traffic adaptation state.
  • the matching of the state according to the bit value is only one example, and may be changed according to mutual setting of the terminal and the base station, and may also represent various states of the terminal based on a bit value of two or more bits.
  • the base station changes or reconfigures an RRC related parameter based on the terminal preference information.
  • Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • the RRC related parameter affected by the UE preference information may include a DRX related parameter.
  • DRX refers to a function that allows the UE to stop monitoring a downlink physical downlink control channel (PDCCH) for a predetermined period of time (ie, non-active time).
  • PDCCH physical downlink control channel
  • non-active time a predetermined period of time
  • 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. 3 is a conceptual diagram illustrating DRX related parameters and DRX operation reconfigured based on UE preference information according to an embodiment of the present invention.
  • the DRX operation is repeated in units of a DRX cycle (300).
  • the DRX cycle 300 is a periodic repetition of a DRX opportunity (DR) 310 and an On Duration 305. Is defined.
  • One cycle of DRX cycle 300 includes a duration 305 and a DRX opportunity (310).
  • the DRX cycle 300 includes, for example, a long DRX cycle applied in a range between 10 subframes and 2560 subframes, and in another example, 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 300 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
  • a 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 300 begins.
  • the DRX short cycle timer is a timer that defines the number of consecutive subframes that a UE must follow in a 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 base station reconfigures RRC related parameters, particularly DRX related parameters based on the terminal preference information, and transmits an RRC connection reconfiguration message including the same to the terminal (S210).
  • Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • the base station when the received terminal preference information indicates the basic state, the base station maintains the RRC related parameters that have been previously configured. Therefore, in this case, S210 may be omitted. Alternatively, the base station reconfigures the RRC related parameters with radio resource (RRC) related parameters allocated by the base station at the first RRC connection.
  • RRC radio resource
  • the base station when the received terminal preference information indicates the battery power saving state, the base station performs RRC-related parameter reconfiguration with a configuration that can reduce the battery consumption of the terminal.
  • the base station configures or reconfigures DRX so that the terminal operates in a long DRX mode when receiving the terminal preference information on the battery power saving state.
  • the DRX may be reconfigured to maintain a longer non-active time of the terminal.
  • 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. That is, when both the short term DRX and the long term DRX are configured in the DRX configuration, and the base station receives the terminal preference information indicating the battery power saving state from the terminal, the base station may remove the short term DRX configuration.
  • the base station may also reconfigure the DRX inactivity timer and DRX retransmission timer to a predetermined time or less.
  • 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 DRX configuration information reconfigured in the above manner may be configured 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 ⁇ .
  • the terminal since the terminal may operate in an intermittent more active time due to an increase in the DRX cycle length, and the terminal may operate in an active time for a shorter time due to a decrease in duration timer time. The terminal may reduce power consumption.
  • the base station when the received terminal preference information indicates the transmission efficiency state, the base station performs the RRC related parameter reconstruction in a direction to increase the transmission efficiency. For example, when the base station receives the terminal preference information on the transmission efficiency state, in order to increase the downlink transmission efficiency, the length of the DRX cycle is configured to be shorter, or the terminal does not monitor the PDCCH subframe. You may be able to configure non-active time shorter.
  • the base station may further configure the short-term DRX. Can be.
  • the base station may also reconfigure the DRX inactivity timer and DRX retransmission timer and the like for a predetermined time or more.
  • an active time for the UE to monitor the PDCCH subframe may occur more frequently or longer, and downlink transmission efficiency may be improved.
  • the base station transmits the terminal based on the UE preference information.
  • the transmission efficiency can be improved.
  • the base station when the received terminal preference information indicates the traffic adaptive state, the base station performs the RRC related parameter reconstruction in consideration of the application and / or traffic conditions currently used by the terminal.
  • the base station receives the terminal preference information indicating the traffic adaptation state from the terminal, the base station determines that the terminal is the traffic adaptation state, the application currently used by the terminal, the traffic state of the terminal, or radio bearer (radio bearer)
  • the QoS Quality of Service
  • the most suitable radio resource configuration can be selected and transmitted to the terminal within the available radio resource configuration. have.
  • the base station may transmit a plurality of available radio resource configurations to the terminal, and the terminal may select a desired configuration within the radio resource configuration transmitted by the base station.
  • the terminal may add information on an allowable delay level or the like to the terminal preference information including the information on the traffic adaptation state, or may separately transmit the information to the base station.
  • the base station determines that the terminal is in the traffic adaptation state based on the terminal preference information, and performs radio resource configuration or reconfiguration based on the allowable delay level information.
  • the base station may perform a configuration such as DRX configuration, QoS level configuration (or QCI configuration), or scheduling (scheduling) timing in consideration of the allowable delay time of the terminal, and may transmit to the terminal.
  • the base station may know that the terminal is in the traffic adaptation state.
  • the base station can know the radio bearer being used by the terminal, QoS level (for example, QCI, etc.) or traffic characteristics. Therefore, based on this, the base station may vary the DRX configuration corresponding to the radio bearers.
  • QoS Class Identifier (QCI) table may be configured as shown in the table below.
  • a packet delay budget is an upper bound of the allowable delay time at the terminal, a PELR is a packet error loss rate, and a GBR is a guaranteed bit rate. rate).
  • Traffic transmission may be performed through a plurality of radio bearers between a base station and a terminal, and the plurality of radio bearers may have different QCI values. For example, assume that one of the two radio bearers configured for traffic transmission has a QCI 3 value and the other radio bearer has a QCI 6 value.
  • the base station may transmit traffic to the terminal through one DRX configuration. However, when the base station determines that the terminal is in a traffic adaptation state based on the terminal preference information, a plurality of DRX configurations may be generated and transmitted to the terminal. As a result, the base station enables the terminal to make a selection according to its preference.
  • the base station may include two different DRXs, such as DRX configuration 1 adaptively configured to the radio bearer having the QCI 3 value and DRX configuration 2 adaptively configured to the radio bearer having the QCI 6 value.
  • the configuration may be generated, and may be included in an RRC connection reconfiguration message and transmitted to the terminal.
  • the terminal may select one of the DRX configuration 1 and the DRX configuration 2 included in the RRC connection reconfiguration message.
  • the terminal may inform the base station which DRX configuration of the DRX configuration 1 and the DRX configuration 2 is selected.
  • FIG. 4 is a flowchart illustrating a method of supporting a preference of a terminal according to another embodiment of the present invention.
  • the base station transmits preference support information or UE preference info available to the terminal (S400).
  • the preference support information is information indicating whether the base station can receive or use the terminal preference information. This is because the base station may or may not perform RRC related parameter reconfiguration using the terminal preference information according to its performance. From the point of view of the terminal, it is possible to determine whether to check (or generate or transmit to the base station) its preference information according to whether the base station can use the terminal preference information. In other words, the terminal may use the preference support information as a criterion for determining whether to use the terminal preference information.
  • the preference support information may indicate two things, either allowed or not allowed.
  • the preference support information indicates 'allow', it means that the base station can receive or use the terminal preference information.
  • the preference support information indicates 'allow', this may mean that the base station allows the terminal to transmit the terminal preference information to the base station. In this case, the UE can know that the preference information can be transmitted to the base station.
  • the preference support information indicates 'not allowed', it means that the base station cannot receive or use the terminal preference information.
  • the preference support information indicates 'not allowed', this may mean that the base station does not allow the terminal to transmit the terminal preference information to the base station.
  • the preference support information may be included in system information, for example. That is, the base station may transmit the preference support information through a broadcast control channel (BCCH) which is a logical channel.
  • BCCH broadcast control channel
  • the base station since all terminals may not be configured to use terminal preference information, and the base station may not know which terminal uses terminal preference information, the base station needs to broadcast the preference support information to multiple terminals. There is. Therefore, preference support information is preferably transmitted to the terminal through the system information.
  • the terminal may know whether the base station can receive the terminal preference information by receiving the preference support information through the system information.
  • system information including preference support information may be configured as follows.
  • the system information block type 1 (SystemInformationBlockType1) includes preference support information (uePreferInfoAvail).
  • the preference support information uePreferInfoAvail indicates allowed or notAllowed.
  • system information including preference support information may be configured as follows.
  • the System Information Block Type 1 may optionally include a preference support information (uePreferInfoAvail) field. That is, the preference support information (uePreferInfoAvail) field may be configured in the system information block type 1 as optional.
  • the preference support information (uePreferInfoAvail) field when the preference support information (uePreferInfoAvail) field exists, it indicates that the base station supports UE preference information, and when the preference support information (uePreferInfoAvail) field does not exist, the base station does not support UE preference information. Indicates.
  • the base station can provide various information that can be transmitted by the terminal, for example, assistant information for interference avoidance for in-device coexistence (IDC), heterogeneous network (HetNet), and the like.
  • the base station may inform the terminal whether related base station information or MBMS related base station information can be received. That is, since the terminal may transmit various assistant information to the base station, the base station may inform the terminal whether it is supported.
  • the following table is an example of a system information syntax including information indicating whether the terminal supports various auxiliary information that can be transmitted.
  • the idcFreqinfoAvail field indicates whether the base station supports IDC related auxiliary information.
  • the hetNetInfoAvail field indicates whether the base station supports HetNet related auxiliary information.
  • the uePreferinfoAvail field indicates whether the base station supports auxiliary information regarding the terminal preference.
  • the MBMSInfoAvail field indicates whether the base station supports MBMS-related auxiliary information. If the value of each information field is 'allowed', this indicates that the base station supports the corresponding auxiliary information. If not, it indicates that the base station does not support the auxiliary information.
  • each of the idcFreqinfoAvail field, hetNetInfoAvail field, uePreferinfoAvail field, and MBMSInfoAvail field may be configured as optional. That is, the idcFreqinfoAvail field, the hetNetInfoAvail field, the uePreferinfoAvail field, and the MBMSInfoAvail field may be configured to the system information block type 14 as optional. In this case, if the idcFreqinfoAvail field is present, it indicates that the base station supports IDC related auxiliary information.
  • the idcFreqinfoAvail field indicates that the base station does not support IDC related auxiliary information.
  • the hetNetInfoAvail field indicates that the base station supports HetNet related auxiliary information
  • the hetNetInfoAvail field indicates that the base station does not support HetNet related auxiliary information.
  • the uePreferinfoAvail field indicates that the corresponding base station supports auxiliary information about the terminal preference.
  • the uePreferinfoAvail field is not present, it indicates that the base station does not support the auxiliary information about the terminal preference.
  • the MBMSInfoAvail field indicates that the base station supports the supplementary information related to MBMS. If the MBMSInfoAvail field is not present, it indicates that the base station does not support the MBMS related auxiliary information.
  • auxiliary information in the system information may be configured in the form of a bitmap (bitmap) or a bit string (bit string) as shown in the table below.
  • the ueAssistantInfoAvail field is a bit string format that may indicate whether various auxiliary information is supported.
  • bit a corresponds to idcFreqInfo
  • bit b corresponds to hetNetInfo
  • bit c corresponds to uePreferInfo.
  • a value of 0 indicates that auxiliary information corresponding to the bit is not supported by the base station
  • a value of 1 indicates that the corresponding auxiliary information is supported by the base station.
  • the ueAssistantInfoAvail field is equal to 001, the base station does not support idcFreqInfo, hetNetInfo, and uePerferInfo.
  • the terminal Upon receiving system information including information indicating whether to support preference support information or assistance information from a base station, the terminal checks the indication of information indicating whether to support preference support information or assistance information. If the preference support information indicates 'not allowed', the terminal does not transmit the terminal preference information to the base station. On the other hand, if the preference support information indicates 'allow', the terminal transmits the terminal preference information to the base station (S410). That is, the terminal may adaptively transmit the terminal preference information to the base station according to the content of the preference information in the base station. The base station reconfigures the RRC related parameters based on the terminal preference information and transmits an RRC connection reconfiguration message including the reconfigured RRC related parameters to the terminal (S420). Transmission of the terminal preference information and transmission of the RRC connection reconfiguration message may be performed in the same manner as the operations of steps S200 and S210, respectively.
  • FIG. 5 is a flowchart illustrating a method of supporting a preference of a terminal according to another embodiment of the present invention.
  • the base station transmits UE preference inquiry or UE Preference Capability Request information to the UE (S500).
  • the terminal preference query information is information that the base station inquires of the terminal whether the terminal can transmit (or support) the terminal preference information. In this case, the base station may query the entire information regarding the overall performance of the terminal as well as the inquiry whether the terminal supports the transmission of the terminal preference information.
  • the terminal transmits UE Preference Capability information to the base station according to the terminal preference query information received from the base station (S510).
  • the terminal preference performance information is information indicating whether the terminal can transmit (or support) terminal preference information.
  • the terminal and the base station may use a UE capability enquiry procedure.
  • the UE preference query information may be included in the UECapabilityEnquiry message in step S500 and transmitted.
  • the UE preference performance information may be included in the UE capability information (UECapabilityInformation) and transmitted.
  • the terminal performance information may be configured with a syntax such as the following table.
  • UE capability information may include IE UE-EUTRA-Capability information in the container (container) of the ue-CapabilityRat-ContainerList field, the terminal preference performance information is the IE UE-EURTA- Capability information may be included.
  • the IE UE-EUTRA-Capability information may be configured with a syntax as shown in the following table.
  • the UE-EUTRA-Capability-v11xx-IEs field is information on a new terminal capability and includes an auxiliary capability information (ueAssistantCapaInfo) field of the terminal.
  • the auxiliary performance information field of the terminal is a field indicating auxiliary information that can be supported (transmitted) by the terminal.
  • Auxiliary performance information field of the terminal is one of the auxiliary information (idcFreqInfo) for coexistence interference avoidance (IDC) in the device, the auxiliary information related to heterogeneous networks (hetNetInfo), MBMS-related auxiliary information (MBMSInfo) and auxiliary information (uePreferInfo) for the terminal preference It may indicate whether the terminal supports or has capability regarding at least one piece of information.
  • the auxiliary performance information field of the terminal may have a form of a bit string or a bitmap, and may have a length X corresponding to the number of auxiliary information supported by the terminal.
  • a terminal supports four auxiliary information such as idcFreqInfo, hetNetInfo, uePreferInfo, and MBMSInfo
  • X of ueAssistantCapaInfo is 4, and the number of bits of the ueAssistantCapaInfo field is 4.
  • Each bit sequentially corresponds to the respective auxiliary information. If the bit of the ueAssistantCapaInfo field is abcd, bit a corresponds to idcFreqInfo, bit b corresponds to hetNetInfo, bit c corresponds to uePreferInfo, and bit d corresponds to MBMSInfo. If the value of the bit is 0, it indicates that the corresponding auxiliary information is not supported by the terminal.
  • the terminal does not support idcFreqInfo, hetNetInfo, and MBMSInfo, and uePreferInfo is supported.
  • the IE UE-EUTRA-Capability information may be configured in a syntax as shown in the following table.
  • the UE-EUTRA-Capability-v11xx-IEs field may include a support or capability field for specific assistance information other than the assistant information capability (ueAssistantInfoCapa) field of the UE.
  • the UE-EUTRA-Capability-v11xx-IEs field may include a preference capability information (uePreferCapaInfo) field of the terminal.
  • the preference performance information of the terminal indicates the capability of the terminal as to whether the terminal can support (transmit or generate) the terminal preference information.
  • the preference performance information of the terminal may indicate two things, such as support or noSupport. When the preference performance information of the terminal indicates 'support', it means that the terminal supports the terminal preference information.
  • the base station can know that the terminal can transmit the terminal preference information to the base station.
  • the preference performance information of the terminal indicates 'unsupported', it means that the terminal does not support the terminal preference information. That is, in this case, the base station confirms that the terminal cannot transmit the terminal preference information to the base station.
  • the preference support information (uePreferInfoAvail) field is configured as optional
  • the preference performance information (uePreferCapaInfo) field of the terminal may be configured as optional. That is, the preference capability information (uePreferCapaInfo) field of the terminal may be optionally configured in the UE-EUTRA-Capability-v11xx-IEs field.
  • the preference performance information (uePreferCapaInfo) field of the terminal when the preference performance information (uePreferCapaInfo) field of the terminal exists, it indicates that the corresponding terminal supports the terminal preference information, and when the preference performance information (uePreferCapaInfo) field of the terminal does not exist, the corresponding terminal is the terminal preference information. Indicates no support.
  • the base station may distinguish which terminal supports the terminal preference information and which terminal does not support the terminal preference information.
  • the base station transmits the preference support information (preference support information or uePreferenceInfoAvail) to the corresponding terminal (after further determining the necessity of the terminal preference information) for the terminal supporting the terminal preference information (S520).
  • the base station can inform the terminal whether it can receive the terminal preference information.
  • the base station may allow (or command) the terminal to transmit the terminal preference information to the base station.
  • the base station may inform the terminal that only the specific terminal supports or permits transmission of the terminal preference information.
  • the preference support information may be specifically transmitted to the terminal, the preference support information may be transmitted from the base station to the terminal through a dedicated control channel (DCCH), which is a logical channel.
  • DCCH dedicated control channel
  • the preference support information may be transmitted through an RRC connection setup message.
  • the terminal transmits the terminal preference information to the base station (S530).
  • the RRC related parameter is reconfigured based on the UE preference information, and an RRC connection reconfiguration message including the reconfigured RRC related parameters is transmitted to the UE (S540).
  • Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • the transmission of the terminal preference information and the transmission of the RRC connection reconfiguration message may be performed in the same manner as the operations of steps S200 and S210, respectively.
  • the base station may transmit the support information for the other auxiliary information together with the preference support information dedicated (dedicatedly) to the terminal.
  • the base station receives not only the preference support information, but also various information that can be transmitted by the terminal, for example, assistance information for coexistence interference avoidance (IDC) in the device, assistance information for heterogeneous networks, assistance information for MBMS, etc. It is because it should be able to inform the terminal whether or not to support (or the base station to allow (or command) the transmission to the terminal). That is, since the terminal can transmit various auxiliary information to the base station, the base station needs to clearly inform the terminal whether it is supported or allowed.
  • the preference support information is a concept equivalent to the support information of the base station for the terminal preference information.
  • the following table is an example of a syntax including support information for auxiliary information of a terminal transmitted by a base station.
  • the idcFreqInfoAvail field indicates whether the base station supports IDC related auxiliary information.
  • the hetNetInfoAvail field indicates whether the base station supports HetNet related auxiliary information.
  • the uePreferenceInfoAvail field indicates whether the base station supports auxiliary information (ie, terminal preference information) about the preference of the terminal.
  • the MBMSInfoAvail field indicates whether the base station supports MBMS-related auxiliary information. If the value of each information field is 'allowed', this indicates that the base station supports the corresponding auxiliary information. If not, it indicates that the base station does not support the auxiliary information.
  • the preference support information (uePreferInfoAvail) field is configured as optional
  • the idcFreqInfoAvail field, hetNetInfoAvail field, uePreferenceInfoAvail field, and MBMSInfoAvail field of the terminal may be configured as optional.
  • the idcFreqinfoAvail field is present, it indicates that the base station supports IDC related auxiliary information. If the idcFreqinfoAvail field is not present, it indicates that the base station does not support IDC related auxiliary information.
  • the hetNetInfoAvail field indicates that the base station supports HetNet related auxiliary information
  • the hetNetInfoAvail field indicates that the base station does not support HetNet related auxiliary information
  • the uePreferinfoAvail field indicates that the corresponding base station supports auxiliary information about the terminal preference.
  • the uePreferinfoAvail field indicates that the base station does not support the auxiliary information about the terminal preference.
  • the MBMSInfoAvail field it indicates that the base station supports the supplementary information related to MBMS. If the MBMSInfoAvail field is not present, it indicates that the base station does not support the MBMS related auxiliary information.
  • preference support information and other auxiliary information may be configured in the form of a bitmap or a bit string as shown in the following table.
  • the ueAssistantInfoAvail field may indicate whether to support various auxiliary information in a base station in a bit string format.
  • bit a corresponds to idcFreqInfo
  • bit b corresponds to hetNetInfo
  • bit c corresponds to uePreferInfo
  • d corresponds to MBMSInfo.
  • a value of 0 indicates that auxiliary information corresponding to the bit is not supported by the base station
  • a value of 1 indicates that the corresponding auxiliary information is supported by the base station.
  • the base station does not support idcFreqInfo, hetNetInfo, and MBMSInfo, but supports uePerferInfo.
  • the preference support information may have a function of instructing the terminal to stop transmission of terminal preference information currently in progress.
  • the base station defines the preference support information as a flag of 1 bit, and if the flag is set to 1, the base station indicates that the base station can receive the preference information or requests the terminal to transmit the terminal preference information. Can be directed. On the other hand, if the flag is set to 0, it may indicate that the base station is unable to receive the terminal preference information or may indicate that the terminal does not transmit the terminal preference information.
  • the terminal may operate a minimum time interval (MTI).
  • MTI minimum time interval
  • FIG. 6 is a flowchart illustrating a method of supporting a preference of a terminal according to another embodiment of the present invention.
  • a description will be given based on the case in which the terminal preference information is transmitted from the terminal to the base station periodically or aperiodically.
  • the base station transmits preference support information or UE preference info available to the terminal (S600).
  • the preference support information includes a minimum time interval (MTI) for transmitting terminal preference information (and / or various auxiliary information that the terminal can transmit to the base station).
  • the MTI represents a minimum time that the terminal waits to transmit the terminal preference information again after transmitting the terminal preference information to the base station.
  • the MTI may indicate a cycle in which the terminal transmits the terminal preference information to the base station.
  • the terminal does not transmit the terminal preference information to the base station again before the time indicated by the MTI.
  • the MTI may function as a kind of prohibit timer for prohibiting the transmission of the terminal preference information of the terminal for a predetermined time.
  • the terminal transmits the terminal preference information to the base station at least two minutes apart.
  • the preference support information including the MTI may be broadcast from the base station to the terminal through a broadcast control channel (BCCH), which is a logical channel, or terminal-specific in the base station through a dedicated control channel (DCCH), which is a logical channel. May be transmitted.
  • BCCH broadcast control channel
  • DCCH dedicated control channel
  • the terminal transmits the terminal preference information to the base station (S610),
  • the RRC related parameter is reconfigured based on the terminal preference information, and an RRC connection reconfiguration message including the reconfigured RRC related parameter is transmitted to the terminal (S620).
  • the transmission of the terminal preference information and the transmission of the RRC connection reconfiguration message may be performed in the same manner as the operations of steps S200 and S210, respectively.
  • the terminal drives a UE preference information inhibit timer (UE Preference prohibit timer) for prohibiting the transmission of the terminal preference information during the MTI.
  • UE Preference prohibit timer UE Preference prohibit timer
  • the terminal cannot transmit the terminal preference information to the base station because the terminal preference information prohibition timer has not expired during the MTI.
  • the terminal may prohibit transmission of the next terminal preference information within the MTI period based on the MTI.
  • the terminal does not transmit the terminal preference information during the MTI (S630).
  • the terminal After the MTI has elapsed (after the terminal preference prohibit timer expires or after a period elapses), the terminal transmits terminal preference information to the base station (S640), and the base station reconfigures the RRC related parameters based on the terminal preference information transmitted in S640.
  • an RRC connection reconfiguration message including the reconfigured RRC related parameters is transmitted to the terminal.
  • the transmission of the terminal preference information and the transmission of the RRC connection reconfiguration message may be performed in the same manner as the operations of steps S200 and S210, respectively.
  • the terminal determines a preferred operation state of the terminal based on the reconfigured RRC related parameters included in the RRC connection reconfiguration message received in S620, and generates terminal preference information based on this and transmits it to the base station. It may be.
  • the terminal may change or reconfigure the RRC related parameters at the terminal, based on the reconfigured RRC related parameters received from the base station in S620. This may be referred to as radio resource configuration or radio resource reconfiguration, and the terminal may determine a preferred operation state of the terminal based on the radio resource configuration or radio resource reconfiguration.
  • the terminal may enter a battery power saving state or a higher level (or step).
  • the battery power saving state or the power down state may be determined, and the terminal preference information may be generated and transmitted to the base station in S640.
  • the terminal when the terminal wants a higher transmission efficiency or the terminal requires a higher transmission efficiency based on the radio resource configuration or the radio resource reconfiguration (or terminal battery consumption allowance), the terminal transmits a transmission efficiency (transmission). It may be determined that it is an efficient state, a higher level (or step) transmission efficiency state, or a transmission rate up state, and terminal preference information for this may be generated and transmitted to the base station in S640.
  • the base station reconfigures the RRC related parameters based on the terminal preference information and transmits them to the terminal through an RRC connection reconfiguration message in S650. If, in S640, the base station attempts to perform RRC related parameter reconfiguration based on the terminal preference information transmitted from the terminal to the base station, but it is beyond or does not reach the range of RRC related parameter reconfiguration that the base station can tolerate.
  • the base station may not be able to perform the RRC-related parameter reconfiguration to the terminal desired value. In this case, the base station may not perform the RRC-related parameter reconfiguration, and may not transmit an RRC connection reconfiguration message including the RRC-related parameters to the terminal.
  • the MTI value may be included in the RRC connection reconfiguration message in S620 and S640 and then transmitted (and retransmitted) to the terminal. In this case, the MTI value may not be transmitted in the S600.
  • the terminal transmits the terminal preference information to the base station, and the base station reconfigures and transmits the RRC-related parameters to the terminal based on the terminal preference information, so that the terminal may perform an operation according to its own preference.
  • the terminal preference information may be transmitted not only by higher layer signaling such as an RRC message, but also by lower layer signaling such as a MAC layer or a physical layer.
  • the terminal preference information may be used to perform an RRC connection establishment process.
  • An operation transmitted through the above may be specifically performed as follows.
  • FIG. 7 is a flowchart illustrating an example of an operation in which UE preference information is transmitted through an RRC connection establishment process.
  • the terminal transmits an RRC connection request message to the base station (S700).
  • the RRC connection request message is a message for requesting the UE to proceed with the connection establishment process for the RRC connection establishment process.
  • the base station transmits an RRC connection setup message to the terminal (S710).
  • the RRC connection setup message may include preference support information or UE preference info available.
  • the preference support information is information indicating whether the base station can receive or use the terminal preference information.
  • the preference support information may indicate whether the base station permits or commands the terminal to transmit the terminal preference information to the base station.
  • Specific functions and contents of the preference support information include the description of S520.
  • the preference support information may be transmitted to the terminal through the DCCH.
  • the RRC connection configuration message including the preference support information may be transmitted to the terminal through the DCCH.
  • the terminal transmits an RRC connection setup complete message to the base station (S720).
  • UE preference information may be included in the RRC connection setup complete message and transmitted to the base station. Specific functions and contents of UE preference information include the description of S200, S410, S530, S610, and S640.
  • the terminal preference information may indicate a preference of the terminal, that is, an operation state preferred by the terminal as one of a state such as a basic state, a battery power saving state, a transmission efficiency state, a traffic adaptation state, and the like.
  • the base station may configure parameters of the radio resource control (RRC) layer in consideration of the terminal's preference.
  • RRC radio resource control
  • the terminal preference information may be regarded as a kind of assistant information transmitted from the terminal to the base station.
  • the base station reconfigures RRC related parameters (eg, DRX related parameters) based on the terminal preference information. Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • RRC related parameters eg, DRX related parameters
  • the base station determines that the terminal does not have a particular preference based on the information that can be determined by the existing base station radio resource control ( RRC) reconfigure related parameters.
  • RRC radio resource control
  • the RRC-related parameters are reconfigured to radio resource-related parameters allocated by the base station at the first RRC connection.
  • the base station receives the terminal preference information indicating the basic state, it is confirmed that the terminal wants to return to the initial radio resource configuration value previously configured through the RRC connection establishment procedure, and the RRC as the initial radio resource configuration value. Relevant parameters can be reconfigured.
  • the name and function of the state of the terminal indicated by the terminal preference information is an example.
  • the configuration of the radio resource configuration further allows battery consumption in the currently configured radio resource configuration value. It may be set between the terminal and the base station so that the base station recognizes as requesting the RRC-related parameter reconfiguration.
  • the basic state may be a state for requesting setting that is opposite to the battery power saving state. For example, if the battery power saving state is a state for requesting radio resource setting considering battery power saving, the basic state may be a state for requesting radio resource setting for additionally allowing battery consumption.
  • the base station may save the battery or minimize battery consumption based on the terminal preference information. Reconfigure the RRC related parameters.
  • the base station may maximize the transmission (or reception) efficiency based on the terminal preference information. Reconfigure the RRC related parameters.
  • the base station when the terminal instructs the base station that the terminal preference is a traffic adaptive state through the terminal preference information, the base station reconfigures the RRC related parameters so that the terminal may consider the traffic situation based on the terminal preference information. do.
  • the operation state preferred by the terminal indicated by the terminal preference information may indicate up or down of a specific item (eg, power, transmission rate) related to the operation of the terminal in preparation for the current radio resource configuration of the terminal.
  • a specific item eg, power, transmission rate
  • the base station increases the other operation performance while allowing more battery consumption of the terminal based on the terminal preference information.
  • Reconfigure the RRC related parameters when the terminal instructs the base station that the terminal's preference is a downlink of the power item through the terminal preference information, the base station reconfigures the RRC related parameters so that the terminal further reduces battery consumption based on the terminal preference information.
  • the base station when the terminal instructs the base station that the terminal's preference is an increase of the transmission rate item through the terminal preference information, the base station is related to RRC so that the terminal can further increase the transmission (or reception) rate based on the terminal preference information. Reconfigure the parameters. As another example, when the terminal instructs the base station that the terminal's preference is a downlink rate item through the terminal preference information, the base station is related to RRC so that the terminal can further reduce the transmission (or reception) rate based on the terminal preference information. Reconfigure the parameters.
  • the terminal may transmit the terminal preference information in the RRC connection setup complete message only in S720 when preference support information or UE preference info available is included in the RRC connection setup message in S710. That is, in this case, when the preference support information is not included in the RRC connection setup message in S710, the UE transmits an RRC connection setup complete message that does not include the terminal preference information in S720 to the base station.
  • a low power consumption state and a transmission efficiency state indicated by UE preference information of a UE may be implemented in opposite directions in reconfiguring actual RRC related parameters.
  • the base station reconfigures the parameters to a larger DRX cycle period in the battery saving state for DRX reconfiguration, while the transmission efficiency state includes RRC related parameters including DRX related parameters such as reconfiguring the parameters to a smaller DRX cycle period.
  • Parameter reconstruction may be performed in a direction opposite to each other in the reconstruction.
  • the transmission efficiency state is not set separately, the default state may be used in place of the transmission efficiency state.
  • the basic state may be treated as in the case of the above-described transmission efficiency state.
  • the base station transmits an RRC resource reconfiguration message including an RRC related parameter reconfigured based on the terminal preference information received from the terminal to the terminal (S730).
  • the terminal may perform RRC related parameter configuration or reconfiguration at the terminal end based on the reconfigured RRC related parameters included in the RRC connection reconfiguration message received from the base station.
  • the UE may initially perform radio resource configuration based on the RRC connection configuration message in S710, which may be referred to as a basic or initial radio resource configuration. Accordingly, when the terminal transmits the terminal preference information to the base station in S720, the terminal determines the operation state preferred by the relative terminal based on the basic or initial radio resource configuration value, and generates the terminal preference information based on this to be transmitted to the base station.
  • the terminal may determine that the terminal is in a battery saving state requiring more battery power (or preferred) on the basis of the basic or initial radio resource configuration value, and may generate and transmit the terminal preference information about the terminal to the base station. have.
  • the terminal may determine that the terminal is in a transmission efficiency state that requires (or prefers) a higher transmission efficiency based on the basic or initial radio resource configuration value, and may generate terminal preference information for the terminal and transmit it to the base station.
  • the transmission efficiency state may be configured in a direction opposite to the battery power saving state in the reconfiguration of the DRX parameter and the like in an actual implementation. Therefore, the transmission efficiency state may be determined as the case of allowing the battery consumption or the battery consumption state from the viewpoint of the terminal.
  • the terminal may generate terminal preference information and transmit the terminal preference information to the base station for updating the terminal preference information.
  • the terminal receives an RRC connection reconfiguration message in S730 and determines a preferred operation state of a relative terminal based on a radio resource configuration or reconfiguration value configured in the terminal, and generates terminal preference information to the base station based on this. It might be possible to send.
  • FIG. 8 is a flowchart illustrating another example of an operation in which UE preference information is transmitted through an RRC connection establishment process.
  • the terminal transmits an RRC connection request message to the base station (S800).
  • the RRC connection request message is a message for requesting the UE to proceed with the connection establishment process for the RRC connection establishment process.
  • the base station transmits an RRC connection setup message to the terminal (S810).
  • the RRC connection establishment message may or may not include preference support information or UE preference info available.
  • the preference support information is information indicating whether the base station can receive or use the terminal preference information.
  • the preference support information may indicate whether the base station permits or commands the terminal to transmit the terminal preference information to the base station.
  • Specific functions and contents of the preference support information include the description of S520.
  • the preference support information may be transmitted to the terminal through a dedicated control channel (DCCH), which is a logical channel.
  • DCCH dedicated control channel
  • the RRC connection configuration message including the preference support information may be transmitted to the terminal through a dedicated control channel.
  • the terminal transmits an RRC connection setup complete message to the base station (S820).
  • the terminal preference information may be included in the RRC connection setup complete message and transmitted to the base station. Specific functions and contents of the terminal preference information include descriptions of the S200, S410, S530, S610, and S640.
  • the terminal preference information may indicate the preference of the terminal as one of a state such as a default state, a battery power saving state, a transmission efficiency state, and a traffic adaptation state, and the terminal may indicate the terminal preference information.
  • the base station may configure parameters of the radio resource control (RRC) layer in consideration of the preference of the terminal.
  • RRC radio resource control
  • the terminal preference information may be regarded as a kind of assistant information transmitted from the terminal to the base station.
  • the base station reconfigures RRC related parameters (eg, DRX related parameters) based on the terminal preference information. Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • RRC related parameters eg, DRX related parameters
  • RRC-related parameters are reconfigured with radio resource (RRC) related parameters allocated by the base station at the first RRC connection.
  • RRC radio resource
  • the base station receives the terminal preference information indicating the basic state, it is confirmed that the terminal wants to return to the initial radio resource configuration value previously configured through the RRC connection establishment procedure, and the RRC as the initial radio resource configuration value. Relevant parameters can be reconfigured.
  • RRC radio resource
  • the base station sets the RRC-related parameters so that the terminal can save battery or minimize battery consumption based on the terminal preference information.
  • the base station sets an RRC-related parameter so that the terminal maximizes the transmission (or reception) efficiency based on the terminal preference information.
  • the base station when the terminal instructs the base station that the terminal preference is the traffic adaptation state through the terminal preference information, the base station reconfigures the RRC related parameters so that the terminal may consider the traffic situation based on the terminal preference information.
  • the operation state preferred by the terminal indicated by the terminal preference information may indicate up or down of a specific item (eg, power, transmission rate) related to the operation of the terminal in preparation for the current radio resource configuration of the terminal.
  • a specific item eg, power, transmission rate
  • the base station increases the other operation performance while allowing more battery consumption of the terminal based on the terminal preference information.
  • Reconfigure the RRC related parameters when the terminal instructs the base station that the terminal's preference is a downlink of the power item through the terminal preference information, the base station reconfigures the RRC related parameters so that the terminal further reduces battery consumption based on the terminal preference information.
  • the base station when the terminal instructs the base station that the terminal's preference is an increase of the transmission rate item through the terminal preference information, the base station is related to RRC so that the terminal can further increase the transmission (or reception) rate based on the terminal preference information. Reconfigure the parameters. As another example, when the terminal instructs the base station that the terminal's preference is a downlink rate item through the terminal preference information, the base station is related to RRC so that the terminal can further reduce the transmission (or reception) rate based on the terminal preference information. Reconfigure the parameters.
  • the terminal may transmit the terminal preference information in the RRC connection configuration complete message in S820. That is, in this case, even if the preference support information is not included in the RRC connection setup message in S810, the UE transmits an RRC connection setup complete message including the terminal preference information to the base station in S810.
  • the battery power saving state and the transmission efficiency state indicated by the terminal preference information of the terminal may be implemented in opposite directions in reconfiguring the actual RRC related parameters.
  • the base station reconfigures a parameter to a larger DRX cycle period in a battery power saving state for a DRX configuration, while an RRC related parameter including a DRX related parameter such as a parameter reconfigured to a smaller DRX cycle period in a transmission efficiency state.
  • Parameter reconstruction may be performed in a direction opposite to each other in the reconstruction.
  • the transmission efficiency state is not set separately, the default state may be used in place of the transmission efficiency state.
  • the base station transmits an RRC connection reconfiguration message including the reconfigured RRC related parameters to the terminal (S830).
  • the terminal may perform RRC related parameter configuration or reconfiguration at the terminal end based on the reconfigured RRC related parameters included in the RRC connection reconfiguration message received from the base station.
  • FIG. 9 is a flowchart illustrating still another example of an operation in which UE preference information is transmitted through an RRC connection establishment process.
  • the terminal transmits an RRC connection request message to the base station (S900).
  • the RRC connection request message is a message for requesting the UE to proceed with the connection establishment process for the RRC connection establishment process.
  • the terminal preference information may be included in the RRC connection request message and transmitted to the base station. Specific functions and contents of the terminal preference information include descriptions of the S200, S410, S530, S610, and S640.
  • the terminal preference information may indicate the preference of the terminal as one of a state such as a basic state, a battery power saving state, a transmission efficiency state, and a traffic adaptation state, and the terminal transmits the terminal preference information to the base station.
  • the base station may configure parameters of the radio resource control layer in consideration of the preference of the terminal.
  • the terminal preference information may be regarded as a kind of assistant information transmitted from the terminal to the base station.
  • the base station reconfigures RRC related parameters (eg, DRX related parameters) based on the terminal preference information. Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • RRC related parameters eg, DRX related parameters
  • the base station determines that the terminal does not have a particular preference based on information that can be determined by the existing base station RRC parameters Reconstruct
  • the RRC-related parameters are reconfigured to radio resource-related parameters allocated by the base station at the first RRC connection.
  • the base station receives the terminal preference information indicating the basic state, it is confirmed that the terminal wants to return to the initial radio resource configuration value previously configured through the RRC connection establishment procedure, and the RRC as the initial radio resource configuration value.
  • Relevant parameters can be reconfigured.
  • the name and function of the operation state preferred by the terminal indicated by the terminal preference information may be set differently by an appointment between the terminal and the base station as an example. The same applies to other examples described below.
  • the base station sets the RRC-related parameters so that the terminal can save battery or minimize battery consumption based on the terminal preference information.
  • the base station sets an RRC-related parameter so that the terminal maximizes the transmission (or reception) efficiency based on the terminal preference information.
  • the base station when the terminal instructs the base station that the terminal preference is the traffic adaptation state through the terminal preference information, the base station reconfigures the RRC related parameters so that the terminal may consider the traffic situation based on the terminal preference information.
  • the operation state preferred by the terminal indicated by the terminal preference information may indicate up or down of a specific item (eg, power, transmission rate) related to the operation of the terminal in preparation for the current radio resource configuration of the terminal.
  • a specific item eg, power, transmission rate
  • the base station can increase the other operating performance while allowing more battery consumption of the terminal based on the terminal preference information.
  • Reconfigure related parameters when the terminal instructs the base station that the terminal's preference is a downlink of the power item through the terminal preference information, the base station reconfigures the RRC related parameters so that the terminal further reduces battery consumption based on the terminal preference information.
  • the base station when the terminal instructs the base station that the terminal's preference is an increase of the transmission rate item through the terminal preference information, the base station is related to RRC so that the terminal can further increase the transmission (or reception) rate based on the terminal preference information. Reconfigure the parameters. As another example, when the terminal instructs the base station that the terminal's preference is a downlink rate item through the terminal preference information, the base station is related to RRC so that the terminal can further reduce the transmission (or reception) rate based on the terminal preference information. Reconfigure the parameters.
  • the base station transmits an RRC connection setup message to the terminal (S910).
  • the terminal transmits an RRC connection setup complete message to the base station (S920).
  • the base station transmits an RRC connection reconfiguration message including the reconfigured RRC related parameters to the terminal (S930).
  • the terminal may perform RRC related parameter configuration or reconfiguration at the terminal end based on the reconfigured RRC related parameters included in the RRC connection reconfiguration message received from the base station.
  • FIG. 10 is a flowchart illustrating an operation of a terminal supporting a preference of a terminal according to an embodiment of the present invention.
  • the terminal generates terminal preference information (S1000).
  • the terminal may generate the terminal preference information indicating an operating state preferred by the terminal among operating states of various terminals.
  • the terminal may generate the terminal preference information indicating one of a basic state, a battery power saving state, a transmission efficiency state, and a traffic adaptation state.
  • the terminal may generate the terminal preference information including the type or level as well as the type of the operating state preferred by the terminal.
  • the terminal may generate the terminal preference information indicating up or down of a specific item (for example, power, transmission rate, etc.) related to the operation of the terminal in preparation for the current radio resource configuration of the terminal.
  • the terminal may directly indicate an operating state preferred by the terminal among the various operating states, or may generate the terminal preference information for toggling the operating state preferred by the terminal from one state to another.
  • the terminal may generate the terminal preference information directly indicating one of the basic state, the battery power saving state, the transmission efficiency state, and the traffic adaptation state, or among the plurality of states.
  • the terminal preference information may be generated to toggle the operation state preferred by the terminal from one state to another (eg, from the battery power saving state to the transmission efficiency state).
  • the terminal transmits the terminal preference information to the base station (S1010).
  • the terminal preference information may be transmitted not only by higher layer signaling such as an RRC message but also by lower layer signaling such as a MAC layer or a physical layer.
  • the terminal receives an RRC connection reconfiguration message from the base station (S1020).
  • the RRC connection reconfiguration message includes an RRC related parameter (eg, DRX related parameter) reconfigured by the base station based on the terminal preference information.
  • RRC related parameter eg, DRX related parameter
  • the RRC connection reconfiguration message may include a syntax as shown in Table 1 above.
  • the terminal changes or reconfigures the RRC related parameters in the terminal based on the reconfigured RRC related parameters. This may be called radio resource configuration or radio resource reconfiguration.
  • the terminal may receive preference support information from the base station.
  • the preference support information is information indicating whether the base station can receive or use the terminal preference information. This is because the base station may or may not perform RRC related parameter reconfiguration using the terminal preference information according to its performance. From the point of view of the terminal, it is possible to determine whether to check (or generate or transmit to the base station) its preference information according to whether the base station can use the terminal preference information. In other words, the terminal may use the preference support information as a criterion for determining whether to use the terminal preference information. That is, the preference support information may indicate whether the base station permits or commands the terminal to transmit the terminal preference information to the base station. Specific functions and contents of the preference support information include the description of S400 and S520.
  • the terminal may exclusively receive whether or not the other auxiliary information is supported together with the preference support information.
  • the base station can receive not only the preference support information but also various information that can be transmitted by the terminal, for example, assistance information for coexistence interference avoidance (IDC) in the device, assistance information for heterogeneous networks, or assistance information related to MBMS. This is because there may be a need to inform the terminal if it can. That is, since the terminal may transmit various report information to the base station, there is a need for the base station to clearly inform the terminal whether or not it is supported.
  • IDC coexistence interference avoidance
  • the terminal may first receive the terminal preference query information from the base station.
  • the terminal preference query information is information that the base station inquires of the terminal whether the terminal can transmit the terminal preference information.
  • the base station may query the entire information regarding the overall performance of the terminal as well as the inquiry whether the terminal supports the transmission of the terminal preference information.
  • the terminal may transmit terminal preference performance information indicating whether the terminal may transmit (support or generate) terminal preference information according to the terminal preference query information received from the base station.
  • UE capability In order to exchange UE preference query information and UE preference capability information, the UE and the base station may use a UE capability enquiry procedure.
  • the UE preference query information may be included in the UECapabilityEnquiry Message and transmitted.
  • the UE preference performance information may be included in the UE capability information (UECapabilityInformation) and transmitted.
  • the terminal performance information may be configured with syntax such as Table 7 and Table 8, or Table 7 and Table 9.
  • FIG. 11 is a flowchart illustrating an operation of a base station supporting preference of a terminal according to an embodiment of the present invention.
  • the base station receives terminal preference information from the terminal (S1100).
  • the terminal preference information may indicate an operating state preferred by the terminal among operating states of various terminals.
  • the terminal preference information may indicate one of a basic state, a battery power saving state, a transmission efficiency state, and a traffic adaptation state.
  • the terminal preference information may include not only the type of operation state preferred by the terminal but also a step or a level.
  • the terminal preference information may indicate upward or downward of a specific item (eg, power, transmission rate, etc.) related to the operation of the terminal in preparation for the current radio resource configuration of the terminal.
  • the terminal preference information may be transmitted not only by higher layer signaling such as an RRC message but also by lower layer signaling such as a MAC layer or a physical layer.
  • the base station changes or reconfigures an RRC related parameter (eg, DRX related parameter) based on the terminal preference information (S1110).
  • Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • the base station may maintain the RRC related parameter that has been previously configured without changing or reconfiguring.
  • the base station when the received terminal preference information indicates the battery power saving state, the base station performs RRC related parameter reconfiguration in a direction to reduce battery consumption of the terminal.
  • the base station configures or reconfigures the DRX so that the terminal operates in a long DRX mode when receiving the terminal preference information on the battery power saving state.
  • the DRX may be reconfigured to maintain a longer inactivity time of the terminal.
  • the base station when the received terminal preference information indicates the transmission efficiency state, the base station performs the RRC related parameter reconstruction in a direction to increase the transmission efficiency. For example, when the base station receives the terminal preference information on the transmission efficiency state, in order to increase the downlink transmission efficiency, the length of the DRX cycle is configured to be shorter, or the terminal does not monitor the PDCCH subframe. You will be able to configure the time shorter.
  • the base station when the received terminal preference information indicates the traffic adaptation state, the base station performs the RRC related parameter reconfiguration in consideration of the application and / or traffic conditions currently used by the terminal.
  • the base station receives the terminal preference information indicating the traffic adaptation state from the terminal, the base station determines that the terminal is the traffic adaptation state, the base station is assigned to the application currently used, the traffic state of the terminal, or the radio bearer In consideration of a Quality of Service (QoS) level (for example, a QCI (QoS Class Identifier), etc.), the most suitable radio resource configuration may be selected from the available radio resource configurations and transmitted to the terminal.
  • QoS Quality of Service
  • the base station may transmit a plurality of available radio resource configurations to the terminal, and the terminal may select a desired configuration within the radio resource configuration transmitted by the base station.
  • the terminal may add information on the allowable delay level to the terminal preference information including the information on the traffic adaptation state, or may transmit the information to the base station separately.
  • the base station determines that the terminal is in the traffic adaptation state based on the terminal preference information, and performs radio resource reconfiguration based on the allowable delay level information.
  • the base station may perform a configuration such as DRX configuration, QoS level configuration (or QCI configuration), or scheduling (scheduling) timing in consideration of the allowable delay time of the terminal, and may transmit to the terminal.
  • the base station transmits an RRC connection reconfiguration message including the reconfigured RRC related parameters to the terminal (S1120).
  • the RRC connection reconfiguration message may include a syntax as shown in Table 1 above.
  • the base station may transmit the preference support information to the terminal.
  • the preference support information is information indicating whether the base station can receive or use the terminal preference information. This is because the base station may or may not perform RRC related parameter reconfiguration using the terminal preference information according to its performance. From the point of view of the terminal, it is possible to determine whether to check (or generate or transmit to the base station) its preference information according to whether the base station can use the terminal preference information. In other words, the terminal may use the preference support information as a criterion for determining whether to use the terminal preference information. That is, the preference support information may indicate whether the base station permits or commands the terminal to transmit the terminal preference information to the base station.
  • the terminal may exclusively receive whether or not the other auxiliary information is supported together with the preference support information.
  • the base station can receive not only the preference support information but also various information that can be transmitted by the terminal, for example, assistance information for coexistence interference avoidance (IDC) in the device, assistance information for heterogeneous networks, or assistance information related to MBMS. This is because there may be a need to inform the terminal if it can. That is, since the terminal may transmit various report information to the base station, there is a need for the base station to clearly inform the terminal whether or not it is supported.
  • IDC coexistence interference avoidance
  • the base station may transmit the terminal preference query (information to the terminal first.
  • the terminal preference query information is information that the base station inquires of the terminal whether the terminal can transmit the terminal preference information. In addition to the inquiry about whether the terminal supports the transmission of the terminal preference information, the terminal may also query the entire information on the overall performance of the terminal. The terminal may transmit the terminal preference information according to the terminal preference query information received from the base station. The terminal preference performance information indicating whether it can be supported or generated) to the base station, and the base station receives the terminal preference performance information.
  • UE capability enquiry procedure may be used.
  • the call request information may be included in the terminal capability query message and transmitted, and the terminal preference capability information may be included in the terminal capability information and transmitted. And it may be composed of a syntax such as Table 9.
  • FIG. 12 is a block diagram of a terminal and a base station supporting the preference of the terminal according to an embodiment of the present invention.
  • the terminal 1200 includes a transmitter 1220, a receiver 1205, and a terminal processor 1210.
  • the terminal processor 1210 further includes a message processor 1211 and a preference determiner 1212.
  • the receiver 1205 receives preference support information, an RRC connection reconfiguration message, an RRC connection configuration message, terminal preference query information, and the like from the base station 1250. The receiver 1205 then sends the received information or messages to the message processor 1211.
  • the preference determiner 1212 determines (or selects) an operation state preferred by the terminal 1200.
  • the preference determiner may determine an operation state preferred by the terminal 1200 among operating states of various terminals. For example, the preference determiner 1212 may determine one of a basic state, a battery power saving state, a transmission efficiency state, and a traffic adaptation state as a preferred operation state of the terminal 1200. Alternatively, the preference determiner 1212 may further determine not only the type of operation state preferred by the terminal 1200 as described above, but also the level or level of the corresponding state.
  • the preference determination unit 1212 may indicate a state of indicating up or down of a specific item (eg, power, transmission rate, etc.) related to the operation of the terminal 1200 in preparation for the current radio resource configuration of the terminal. This can be determined as the preferred operating state.
  • a specific item eg, power, transmission rate, etc.
  • the preference determiner 1212 may determine an operation state preferred by the terminal 1200 continuously, periodically, or aperiodically. Alternatively, the preference determiner 1212 may determine whether the terminal 1200, in particular, the receiver 1205 or the message processor 1212 receives preference support information or terminal preference query information. Judgment can be performed. Alternatively, the preference determiner 1212 may perform an operation preferred by the terminal 1200 based on a time point at which the terminal 1200, specifically, the receiver 1205 or the message processor 1212 receives preference support information or terminal preference query information. Continuous or periodic or aperiodic determination of the state can be initiated.
  • the preference determiner 1212 transmits the operation state preferred by the determined terminal 1200 to the message processor 1211.
  • the message processor 1211 generates terminal preference information based on an operation state preferred by the terminal 1200.
  • the message processing unit 1211 directly indicates an operation state preferred by the terminal 1200 among the operation states of the various terminals, or the terminal preference information to toggle the operation state preferred by the terminal 1200 from one state to another. Can be generated.
  • the message processor 1211 may provide the terminal preference information directly indicating one of the default state, the battery power saving state, the transmission efficiency state, and the traffic adaptive state.
  • the terminal preference information may be generated or toggled from one of the plurality of states to another state (for example, from a battery power saving state to a transmission efficiency state).
  • the transmitter 1220 transmits the terminal preference information to the base station 1250.
  • the message processor 1211 analyzes or interprets the syntax of information or messages received from the receiver 1205.
  • the message processor 1211 may analyze or interpret the message or information in the format as shown in Table 1, Table 3, Table 4, Table 5, Table 6, Table 10, and Table 11.
  • the message processor 1211 interprets the syntax of the preference support information to determine whether the base station 1250 supports the terminal preference information of the terminal 1200 or can receive the terminal preference information or the terminal 1200. It is possible to check whether to allow the transmission of the terminal preference information.
  • the message processing unit 1211 analyzes the syntax of the RRC connection reconfiguration message, and configures the changed (or reconfigured) RRC related parameters included in the RRC connection reconfiguration message in the terminal 1200.
  • the message processor 1211 may perform an indication of each information or message. For example, when the base station 1250 can support the preferences of the terminal 1200 in view of the preference support information, or when the base station 1250 allows (or commands) to transmit the terminal preference information to the terminal 1200, The message processor 1211 may transmit the terminal preference information to the transmitter 1220, and the transmitter 1220 may transmit the terminal preference information to the base station 1250.
  • the message processor 1211 generates terminal preference performance information indicating that the terminal 1200 supports the transmission of supplementary information (terminal preference information) about the preference, and the transmitter 1220 transmits it to the base station 1250. Can be.
  • the message processor 1211 may not only assist information regarding the preference of the terminal 1200, but also assist information for interference avoidance for in-device coexistence (IDC) of the terminal 1200. ), Information indicating whether the terminal 1200 can support (or transmit) at least one of auxiliary information related to heterogeneous network (HetNet) and MBMS related auxiliary information is generated, and the transmitter 1220 This may be transmitted to the base station 1250.
  • the message processor 1211 may generate a message or information having a format as shown in Tables 7 to 9 above.
  • the message processor 1211 may generate the terminal preference performance information based on the terminal preference query information received by the receiver 1205.
  • the receiver 1205 may receive a minimum time interval (MTI) indicating the minimum time that the transmitter 1220 should wait between transmissions of the terminal preference information or a minimum time interval (MTI) indicating the transmission period of the terminal preference information from the base station 1250.
  • MTI minimum time interval
  • the MTI may be included in the preference support information or the RRC connection reconfiguration message and transmitted from the base station.
  • the message processor 1211 may control a time interval for transmitting the terminal preference information from the transmitter 1220 based on the MTI.
  • the base station 1250 includes a receiver 1260, a base station processor 1270, and a transmitter 1255.
  • the base station processor 1270 includes a message processor 1271 and a parameter changer 1272.
  • the transmitter 1255 transmits preference support information, an RRC connection reconfiguration message, an RRC connection configuration message, and a terminal preference query information to the terminal 1200.
  • the receiver 1260 receives the terminal preference information, the RRC connection request message, the RRC connection setting message, the terminal preference query information, and the like from the terminal 1200, and transmits the same to the message processing unit 1271.
  • the terminal preference information may indicate an operating state preferred by the terminal 1200 among operating states of various terminals 1200.
  • the terminal preference information may indicate one of a basic state, a battery power saving state, a transmission efficiency state, and a traffic adaptation state.
  • the terminal preference information may further indicate not only the type of operation state preferred by the terminal 1200 but also a step or a level.
  • the terminal preference information may indicate a state indicating up or down of a specific item (eg, power, transmission rate, etc.) related to the operation of the terminal 1200 in preparation for the current radio resource configuration of the terminal 1200. have.
  • the message processor 1271 analyzes or interprets the syntax of the information or the message received from the receiver 1260.
  • the message processor 1271 may analyze or interpret the terminal preference information and the message or information in the format shown in Tables 7 to 9 above.
  • the parameter changing unit 1272 reconfigures radio resource control related parameters based on the terminal preference information.
  • the parameter changing unit 1272 may be configured according to one of an operation state preferred by the terminal indicated by the terminal preference information, for example, one of the basic state, the battery power saving state, the transmission efficiency state, and the traffic adaptation state.
  • Radio resource control (RRC) related parameters may be changed or reconfigured.
  • the parameter changer 1272 may change or reconfigure the RRC related parameters by reflecting not only the type of the operating state preferred by the terminal 1200 but also a step or a level.
  • the parameter changer 1272 may indicate up or down of a specific item (eg, power, transmission rate) related to the operation of the terminal 1200 in preparation for the current radio resource configuration of the terminal 1200.
  • the RRC related parameter may be changed or reconfigured based on the state.
  • Changing or reconfiguring RRC related parameters includes radio resource configuration or radio resource reconfiguration.
  • the parameter change unit 1272 may maintain the RRC related parameter that is previously configured without changing or reconfiguring.
  • the parameter changing unit 1272 when the terminal preference information indicates the battery power saving state, performs RRC related parameter reconfiguration in a direction to reduce battery consumption of the terminal. Specifically, for example, the parameter changer 1272 may configure or reconfigure DRX so that the UE operates in the long-term DRX mode, or reconfigure DRX so that the inactivity time for which the UE does not monitor the PDCCH subframe is maintained longer. Can be.
  • the parameter change unit 1272 when the terminal preference information indicates the transmission efficiency state, the parameter change unit 1272 performs the RRC related parameter reconstruction in a direction to increase the transmission efficiency. Specifically, for example, the parameter changer 1272 may configure the length of the DRX cycle shorter or reconfigure the DRX so that the inactivity time of the terminal is shorter to increase downlink transmission efficiency.
  • the parameter changing unit 1272 performs the RRC related parameter reconstruction in consideration of an application and / or traffic situation currently used by the terminal 1200. .
  • the parameter changing unit 1272 is most suitable within the available radio resource configuration in consideration of the application currently used by the terminal, the traffic state of the terminal, or the QoS level (for example, QCI, etc.) assigned to the radio bearer.
  • the radio resource configuration is selected and delivered to the message processor 1271.
  • the parameter changer 1272 may transfer a plurality of available radio resource configurations to the message processor 1271.
  • the parameter changing unit 1272 may configure a DRX configuration, QoS level configuration (or QCI configuration), or scheduling timing in consideration of a delay time that the terminal 1200 may allow. Reconstruction of RRC related parameters, including the like, may be performed.
  • the parameter changer 1272 transfers the changed or reconfigured RRC related parameter to the message processor 1271.
  • the message processor 1271 generates an RRC connection reconfiguration message including the reconfigured RRC related parameters.
  • the parameter changer 1272 sends an RRC connection reconfiguration message to the transmitter 1255.
  • the transmitter 1255 transmits an RRC connection reconfiguration message to the terminal 1200.
  • the RRC connection reconfiguration message may include a syntax as shown in Table 1 above.
  • the message processor 1271 generates preference support information indicating whether the base station 1250 can support (or receive) auxiliary information (ie, terminal preference information) regarding the preference of the terminal 1200, The transmitter 1255 may transmit this to the terminal 1200.
  • the message processing unit 1271 may not only provide supplementary information regarding the preference of the terminal 1200, but also supplementary information for interference avoidance for in-device coexistence (IDC) of the terminal 1200.
  • Information indicating whether the base station 1250 can support (or receive) at least one of the assistance information and the MBMS-related assistance information may be generated.
  • the transmitter 1255 may transmit this to the terminal 1200.
  • the message processor 1271 may generate the preference support information by including the syntax of Table 3, Table 4, Table 5, or Table 6.
  • the message processing unit 1271 generates terminal preference query information, which is information that the base station 1250 inquires of the terminal 1200 whether the terminal 1200 can transmit (or support) terminal preference information, and the transmission unit. 1255 may transmit this to the terminal 1200.
  • the message processor 1271 may determine whether the terminal 1200 may transmit (or support) the terminal preference information based on the terminal preference performance information generated by the terminal 1200 according to the terminal preference query information. Can be.
  • the transmitter 1255 may transmit to the terminal 1200 a minimum time interval that the terminal 1200 should wait between transmission of the terminal preference information or a minimum time interval (MTI) indicating a transmission period of the terminal preference information.
  • the MTI may be transmitted to the terminal 1200 through the preference support information or the RRC connection reconfiguration message.
  • the MTI is changed and set by the parameter changing unit 1272, and is included in the preference support information or the RRC connection reconfiguration message by the message processing unit 1721 and transmitted to the terminal 1200 through the transmission unit 1255. Can be.

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 et un appareil de transmission d'informations de préférence de terminal. Selon la présente invention, un terminal détermine un état d'opération préférable, selon des conditions d'applications ou de ressources, et génère des informations de préférence de terminal, de manière à transmettre ces informations de préférence de terminal à une station de base. La station de base reçoit les informations de préférence de terminal, modifie ou reconstruit les paramètres associés à la commande de ressource radio (RRC) adaptés au terminal et transmet les paramètres au terminal. En conséquence, le terminal peut modifier ou reconstruire les paramètres associés RRC au niveau du terminal et effectuer une communication sans fil efficace.
PCT/KR2013/005910 2012-07-09 2013-07-03 Procédé et appareil de transmission d'informations de préférence de terminal WO2014010863A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0074795 2012-07-09
KR1020120074795A KR101971494B1 (ko) 2012-07-09 2012-07-09 단말 선호도 정보 전송 방법 및 장치

Publications (1)

Publication Number Publication Date
WO2014010863A1 true WO2014010863A1 (fr) 2014-01-16

Family

ID=49916262

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2013/005910 WO2014010863A1 (fr) 2012-07-09 2013-07-03 Procédé et appareil de transmission d'informations de préférence de terminal

Country Status (2)

Country Link
KR (1) KR101971494B1 (fr)
WO (1) WO2014010863A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11632798B2 (en) * 2016-03-23 2023-04-18 Lg Electronics Inc. Method for transmitting uplink data in a wireless communication system and device therefor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040086972A (ko) * 2003-04-03 2004-10-13 삼성전자주식회사 멀티캐스트 멀티미디어 방송 서비스를 제공하는 이동 통신시스템에서 호출 방법
KR20100086420A (ko) * 2009-01-22 2010-07-30 이노베이티브 소닉 리미티드 스케줄링 요청의 재설정 절차를 향상시키기 위한 방법 및 장치
KR20110083706A (ko) * 2008-11-10 2011-07-20 리서치 인 모션 리미티드 롱 텀 이볼루션에서 데이터 전송의 종료를 표시함으로써 배터리에 대해 효과적인 상태 또는 구성으로 전환하는 방법 및 장치
KR101096945B1 (ko) * 2006-09-15 2011-12-20 콸콤 인코포레이티드 서비스 성능 변경을 위한 방법 및 장치
KR101148647B1 (ko) * 2007-11-13 2012-05-24 리서치 인 모션 리미티드 상태/모드 전환을 위한 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040086972A (ko) * 2003-04-03 2004-10-13 삼성전자주식회사 멀티캐스트 멀티미디어 방송 서비스를 제공하는 이동 통신시스템에서 호출 방법
KR101096945B1 (ko) * 2006-09-15 2011-12-20 콸콤 인코포레이티드 서비스 성능 변경을 위한 방법 및 장치
KR101148647B1 (ko) * 2007-11-13 2012-05-24 리서치 인 모션 리미티드 상태/모드 전환을 위한 방법 및 장치
KR20110083706A (ko) * 2008-11-10 2011-07-20 리서치 인 모션 리미티드 롱 텀 이볼루션에서 데이터 전송의 종료를 표시함으로써 배터리에 대해 효과적인 상태 또는 구성으로 전환하는 방법 및 장치
KR20100086420A (ko) * 2009-01-22 2010-07-30 이노베이티브 소닉 리미티드 스케줄링 요청의 재설정 절차를 향상시키기 위한 방법 및 장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11632798B2 (en) * 2016-03-23 2023-04-18 Lg Electronics Inc. Method for transmitting uplink data in a wireless communication system and device therefor

Also Published As

Publication number Publication date
KR101971494B1 (ko) 2019-04-23
KR20140008619A (ko) 2014-01-22

Similar Documents

Publication Publication Date Title
WO2014129831A1 (fr) Protocole de découverte de dispositifs multicellule assistée par le réseau pour communications de dispositif à dispositif
WO2019059673A1 (fr) Procédé et appareil d'émission et de réception de données dans un système de communication sans fil
WO2014062035A1 (fr) Système et procédé pour protocole de découverte de dispositif ad-hoc/assistée par réseau pour communications de dispositif à dispositif
WO2013062388A2 (fr) Procédé et appareil pour réduire de manière efficace la consommation d'énergie d'un terminal dans un système de communication mobile
WO2019225900A1 (fr) Procédé et appareil de réduction de consommation d'énergie par un terminal dans un système de communication sans fil
WO2010002207A2 (fr) Mode veille flexible pour des systèmes sans fil avancés
WO2013168850A1 (fr) Procédé et appareil de commande de réception discontinue dans un système de communication mobile
WO2021096225A1 (fr) Identifiant temporaire de réseau radio à haute capacité flexible
WO2010071312A2 (fr) Procédé de transmission et de réception de messages de radiomessagerie
WO2014027763A1 (fr) Procédé de surveillance de pdcch basé sur drx et dispositif de communication correspondant
WO2012148235A2 (fr) Dispositif et procédé de transfert pour la continuité de service dans un service mbms
WO2017026791A1 (fr) Procédé de recherche d'un ue relais par l'intermédiaire d'une liaison d2d au niveau d'un ue dans un système de communication sans fil et appareil correspondant
WO2015170892A1 (fr) Procédé, équipement utilisateur et station de base pour commander une réception discontinue (drx) dans un système de communication sans fil
WO2017135573A1 (fr) Procédé de transmission de signaux sur la base d'une technologie d'accès multi-radio dans un système de communication sans fil et appareil associé
WO2017043767A1 (fr) Procédé de fonctionnement d'un mode de repos par application d'un mode drx étendu dans un système de communication sans fil, et appareil à cet effet
WO2012078000A2 (fr) Procédé d'accès entre un terminal et une station de base dans un système de communication sans fil, et appareil correspondant
WO2017131479A1 (fr) Procédé et appareil permettant de réduire le surdébit de signalisation et la batterie du terminal
WO2014142487A1 (fr) Procédé de gestion d'informations concernant des petites cellules actives/inactives dans un système d'accès radio, et appareil destiné à le prendre en charge
WO2014073799A1 (fr) Appareil et procédé pour effectuer une opération d'économie d'énergie d'un terminal sur la base d'une réception discontinue
WO2021182916A1 (fr) Procédé et dispositif d'économie d'énergie pour communication de liaison latérale dans nr v2x
WO2019221493A1 (fr) Procédé de commande de terminal pour service ido cellulaire dans un système de communication mobile 5g
WO2021230556A1 (fr) Procédé et dispositif de communication de liaison latérale basée sur une drx
WO2021182884A1 (fr) Procédé et dispositif pour réaliser une économie d'énergie basée sur une minuterie dans nr v2x
WO2011087269A2 (fr) Appareil et procédé permettant de réaliser une opération de commutation de porteuse pour un service e-mbs dans un système à porteuses multiples
WO2013169000A1 (fr) Procédé et appareil pour reconfigurer une drx par considération d'un transfert intercellulaire

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13816790

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13816790

Country of ref document: EP

Kind code of ref document: A1