US20140029563A1 - Method and apparatus for user equipment in battery saving mode transmitting reverse direction control signal in mobile communication system - Google Patents

Method and apparatus for user equipment in battery saving mode transmitting reverse direction control signal in mobile communication system Download PDF

Info

Publication number
US20140029563A1
US20140029563A1 US14/111,456 US201214111456A US2014029563A1 US 20140029563 A1 US20140029563 A1 US 20140029563A1 US 201214111456 A US201214111456 A US 201214111456A US 2014029563 A1 US2014029563 A1 US 2014029563A1
Authority
US
United States
Prior art keywords
period
subframe
transmission
active time
user equipment
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US14/111,456
Other languages
English (en)
Inventor
Soeng Hun Kim
Gert-Jan van Lieshout
Kyeong In Jeong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to US14/111,456 priority Critical patent/US20140029563A1/en
Priority claimed from KR1020120037390A external-priority patent/KR101956213B1/ko
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VAN LIESHOUT, GERT-JAN, JEONG, KYEONG IN, KIM, SOENG HUN
Publication of US20140029563A1 publication Critical patent/US20140029563A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H04W76/048—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/037—Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/10—Integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to a method and apparatus for transmitting uplink control signals for a user equipment in discontinuous reception (DRX) operation in a mobile communication system.
  • DRX discontinuous reception
  • mobile communication systems have been developed to provide communication services while guaranteeing user mobility. Thanks to rapid technological advancement, mobile communication systems are capable of providing not only voice communication services but also high-speed data communication services.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • LTE-A LTE-Advanced
  • Carrier aggregation (CA) and MIMO are representative ones of the communication schemes to be newly introduced.
  • Carrier aggregation is a technology that enables a user equipment to send and receive data using multiple carriers.
  • the user equipment may send and receive data through a number of cells (normally, these cells belong to the same base station) associated with multiple aggregated carriers.
  • An aspect of the present disclosure is to provide a method and apparatus that enable a user equipment supporting discontinuous reception (DRX) to distinguish a subframe in which control signal transmission is mandatory from another subframe in which control signal transmission is optional when the active time is extended.
  • DRX discontinuous reception
  • a method for a user equipment to transmit control signals to a base station in a wireless communication system supporting discontinuous reception (DRX) may include: receiving a downlink control channel indicating new uplink or downlink transmission in a first period preset with reference to the last subframe of an active time; and selectively skipping transmission of a control signal in a preset second period starting from a subframe at which the downlink control channel is received.
  • DRX discontinuous reception
  • a user equipment transmitting control signals to a base station in a wireless communication system supporting discontinuous reception (DRX) may include: a transceiver unit to send and receive signals to and from the base station; and a control unit determining, when a downlink control channel indicating new uplink or downlink transmission is received by the transceiver unit in a first period preset with reference to the last subframe of an active time, whether to selectively transmit a control signal in a preset second period starting from a subframe at which the downlink control channel is received.
  • a user equipment in DRX operation is capable of distinguishing a situation where higher than normal processing power maybe needed from another situation where higher than normal processing power is not needed and is allowed to send an uplink control signal only when higher than normal processing power is not needed. Hence, it is possible to prevent loss of uplink control signals.
  • FIG. 1 illustrates an LTE system architecture, to which the present disclosure is applied.
  • FIG. 2 illustrates a hierarchy of wireless protocols in the LTE system, to which the present disclosure is applied.
  • FIG. 3 illustrates carrier aggregation supported by a user equipment.
  • FIG. 4 depicts a first embodiment of the present disclosure.
  • FIG. 5 is a sequence diagram describing UE and ENB operations according to the first embodiment of the present disclosure.
  • FIG. 6 is a flowchart describing UE operation according to the first embodiment of the present disclosure.
  • FIG. 7 is a sequence diagram describing UE and ENB operations according to a second embodiment of the present disclosure.
  • FIG. 8 is a flowchart describing UE operation according to the second embodiment of the present disclosure.
  • FIG. 9 is a flowchart describing UE operation according to a third embodiment of the present disclosure.
  • FIG. 10 is a block diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 11 is a block diagram of a base station according to an embodiment of the present disclosure.
  • the present disclosure relates to a method and apparatus used by a user equipment to report performance thereof to the network.
  • the LTE system and carrier aggregation are described in brief.
  • FIG. 1 illustrates an LTE system architecture, to which the present disclosure is applied.
  • an LTE radio access network is composed of base stations (Evolved Node B, Node B, or ENB) 105 , 110 , 115 and 120 , a Mobility Management Entity (MME) 125 , and a Serving-Gateway (S-GW) 130 .
  • a User Equipment (UE) 135 may connect to an external network through the ENBs 105 to 120 and the S-GW 130 .
  • the ENBs 105 to 120 correspond to Node Bs of the existing UMTS system.
  • the ENB is connected to the UE 135 through a radio channel, and may perform more complex functions in comparison to the existing Node B.
  • an entity is needed to perform scheduling on the basis of status information collected from UEs such as information on buffer states, available transmit power and channels.
  • Each of the ENBs 105 to 120 performs this scheduling function.
  • the LTE system utilizes Orthogonal Frequency Division Multiplexing (OFDM) in, for example, a 20 MHz bandwidth as radio access technology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • AMC Adaptive modulation and coding
  • the S-GW 130 provides data bearers, and creates and removes a data bearer under control of the MME 125 .
  • the MME 125 performs various control functions including UE mobility management and is connected to multiple ENBs.
  • FIG. 2 illustrates a hierarchy of wireless protocols in the LTE system, to which the present disclosure is applied.
  • the wireless protocol stack is composed of Packet Data Convergence Protocol (PDCP) 205 or 240 , Radio Link Control (RLC) 210 or 235 , Medium Access Control (MAC) 215 or 230 , and a physical (PHY) layer 220 or 225 .
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY physical layer 220 or 225 .
  • the PDCP 205 or 240 performs compression and decompression of IP headers.
  • the RLC 210 or 235 reconfigures PDCP PDUs (Protocol Data Unit) to a suitable size to conduct ARQ operations and the like.
  • PDCP PDUs Protocol Data Unit
  • the MAC 215 or 230 is connected to multiple RLC layer units in the same UE, and multiplexes RLC PDUs into MAC PDUs or demultiplexes MAC PDUs into RLC PDUs.
  • the physical layer 220 or 225 converts higher layer data into OFDM symbols by means of channel coding and modulation and transmits the OFDM symbols through a wireless channel, or converts OFDM symbols received through a wireless channel into higher layer data by means of demodulation and channel decoding and forwards the data to higher layers.
  • FIG. 3 illustrates carrier aggregation supported by a user equipment.
  • one ENB transmits and receives multiple carriers across multiple frequency bands.
  • the ENB 305 transmits a carrier 315 with a center frequency f1 and a carrier 310 with a center frequency f3.
  • An existing UE may use one of the two carriers to send and receive data.
  • a UE having a carrier aggregation capability may send and receive data to and from multiple carriers in parallel.
  • the ENB 305 may assign more carriers to the UE 330 having a carrier aggregation capability according to situations, increasing the data rate of the UE 330 .
  • one cell is formed by a downlink carrier and an uplink carrier provided by the same base station.
  • carrier aggregation a user equipment may be considered as sending and receiving data through multiple cells in parallel. Hence, the maximum data rate of the user equipment may be increased in proportion to the number of aggregated carriers.
  • data reception through a downlink carrier and data transmission through an uplink carrier may be identical in meaning to data transmission and reception through control and data channels provided by cells corresponding to center frequencies and frequency bands characterizing the above carriers.
  • control information may include Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), Precoding Type Indicator (PTI), Sounding Reference Signal (SRS), and HARQ feedback signal.
  • CQI, PMI, RI and PTI may also be referred to as Channel State Information (CSI).
  • the CSI maybe transmitted through Physical Uplink Control Channel (PUCCH) or be embedded in a part of Physical Uplink Shared Channel (PUSCH) for transmission.
  • the SRS may be transmitted at the last symbol of the PUSCH.
  • Uplink control signals excluding the SRS are transmitted only by the Primary Cell (PCell), and the SRS may also be transmitted by a Secondary Cell (SCell).
  • PCell Primary Cell
  • SCell Secondary Cell
  • multiple serving cells maybe assigned to one UE, and one thereof is the PCell and the others are SCells.
  • the PCell and SCell may be defined as follows.
  • Primary Cell the cell, operating on the primary frequency, in which the UE either performs the initial connection establishment procedure or initiates the connection re-establishment procedure, or the cell indicated as the primary cell in the handover procedure.
  • Secondary Cell a cell, operating on a secondary frequency, which may be configured once an RRC connection is established and which may be used to provide additional radio resources.
  • a UE may operate in discontinuous reception (DRX) mode.
  • DRX discontinuous reception
  • Section 5.7 of 3GPP TS 36.321 may be referred for DRX related information.
  • a UE may monitor the Physical Downlink Control Channel (PDCCH) only for a particular duration set as the active time, so that the UE may switch off the transceiver thereof for the other duration.
  • PDCCH Physical Downlink Control Channel
  • the Active Time a time duration in which PDCCH reception is required during DRX operation.
  • the active time may include the time while:
  • a UE in DRX mode sends the CSI and SRS in the active time and does not send the same in the non-active time. In normal situations, such DRX mode operation does not cause a problem.
  • the UE may be unable to transmit such uplink control signal in a section of the active time. This problem may occur particularly when the CSI signal is to be multiplexed on the PUSCH for transmission.
  • a UE is scheduled to perform PUSCH transmission at the subframe n+m and the active time is extended due to reception of a new scheduling request at the subframe n+m ⁇ k.
  • the UE may prepare PUSCH transmission without CSI multiplexed at the subframe n+m. Owing to unexpected extension of the active time at subframe n+m ⁇ k, the UE has to change transmission at the subframe n+m to PUSCH transmission with CSI multiplexed. However, the UE may be unable to make such a sudden change, and hence may have to prepare both PUSCH transmission without CSI multiplexed and PUSCH transmission with CSI multiplexed.
  • a duration in which the CSI has to be transmitted is separated from a duration in which CSI transmission is determined according to UE capabilities.
  • FIG. 4 depicts the first embodiment of the present disclosure.
  • a first period, second period, third period and fourth period are defined.
  • the subframe n is a subframe at which the active time is expected to end and the subframe n ⁇ k is a subframe at which an event extending the active time has occurred.
  • First period a duration consisting of the subframe n and m ⁇ 1 subframes preceding the subframe n. If m is assumed to be 4, the subframe n ⁇ 3, subframe n ⁇ 2, subframe n ⁇ 1 and subframe n constitute the first period. In the present disclosure, when the active time is extended in the first period, the UE regards this extension as unexpected and may behave differently from the case of other active time extensions.
  • m is a parameter related to processing capabilities to cope with active time extension. It is preferable for m to have a single fixed value for all UEs including low end terminals with low performance.
  • Second period a duration consisting of a subframe at which an event extending the active time (e.g. PDCCH reception indicating new transmission) has occurred and m ⁇ 1 subframes following the subframe. For example, if an event extending the active time has occurred at a subframe n ⁇ 3 and m is 4, the second period consists of the subframe n ⁇ 3, subframe n ⁇ 2, subframe n ⁇ 1 and subframe n. If an event extending the active time has occurred at a subframe n ⁇ 2, the second period consists of the subframe n ⁇ 2, subframe n ⁇ 1, subframe n and subframe n+1.
  • an event extending the active time e.g. PDCCH reception indicating new transmission
  • Third period a duration in which the first period and second period overlap each other. That is, the third period consists of the subframes [n ⁇ k, n] (from n ⁇ k to n, inclusive). The last subframe of the third period is the subframe at which the active time has been expected to end.
  • the third period has already belonged to the active time before extension of the active time, it is possible to transmit the CSI and SRS regardless of UE processing capabilities. Hence, determination of whether to transmit the CSI and SRS by the UE may reduce the chance for the ENB to receive the CSI and SRS, causing system performance degradation.
  • Fourth period a duration of the second period not overlapping with the first period. That is, the fourth period consists of the subframes [n+1, n ⁇ k+m] (inclusive).
  • the UE may be able or unable to transmit the CSI and SRS during the fourth period according to UE capability and the fourth period length.
  • the fourth period length approaches to m (that is, as the occurrence time of an event extending the active time becomes closer to the last subframe of the active time)
  • the possibility of CSI and SRS transmission becomes lower in the former part of the fourth period and becomes higher in the latter part thereof.
  • CSI and SRS transmission is possible after the fourth period.
  • the UE When the active time is extended in the first period, the UE identifies the second, third and fourth periods. In subframes of the third period, the UE transmits the CSI and SRS (if CSI and SRS transmission is scheduled in these subframes). In subframes of the fourth period, the UE transmits the CSI and SRS if possible or does not transmit the CSI and SRS if not possible. After the fourth period, the UE normally transmits the CSI and SRS.
  • the UE when the active time is extended according to reception of UL grant or DL assignment indicating new transmission at the subframe n ⁇ k, the UE normally transmits the CSI and SRS in subframes[n ⁇ k, n] corresponding to the third period, may skip CSI and SRS transmission in subframes[n+1, n+m ⁇ k] corresponding to the fourth period, and normally transmits the CSI and SRS after the subframe n+m ⁇ k.
  • the UE clearly specifies a duration in which the CSI and SRS are to be transmitted, the frequency for the ENB to receive valid CSI and SRS information is increased, leading to system performance enhancement.
  • FIG. 5 describes UE and ENB operations according to the first embodiment of the present disclosure.
  • the UE receives various configuration information (described below) from the ENB and performs DRX, CSI/SRS configuration and the like.
  • the UE starts DRX operation. This indicates that the UE repeats a cycle of active time and non-active time according to preset rules and conditions.
  • the UE monitors the PDCCH and transmits the CSI and SRS on the PUCCH during the active time, and does not monitor the PDCCH and does not transmit the CSI and SRS on the PUCCH during non-active time.
  • CSI transmission on PUCCH indicates that CSI information is transmitted through PUCCH transmission resources.
  • CSI information is normally transmitted through PUCCH transmission resources, but may be transmitted through PUSCH transmission resources (CSI on PUSCH) in some exceptional cases.
  • Scheduling Request is a 1-bit signal sent by the UE to the ENB as a request for transmission resource allocation.
  • the following is examples of CSI on PUSCH.
  • the UE is given freedom as to CSI transmission only in the case of CSI on PUCCH and is forced to transmit the CSI in the case of CSI on PUSCH.
  • the active time is unexpectedly extended. For example, assuming that the active time is scheduled to end at a subframe owing to expiration of onDurationTimer or drx-inactivityTimer, when a PDCCH indicating new downlink transmission or uplink transmission resource allocation is received within the first period set with reference to the subframe, the active time may be extended.
  • the UE determines the second period, third period and fourth period.
  • the UE performs operations in accordance with the determined periods. More specifically, the UE performs CSI on PUCCH, CSI on PUSCH, and SRS transmission during the third period.
  • the SRS may be configured not only on the PCell but also on the SCell.
  • the UE performs SRS transmission in all serving cells where the SRS is configured and SRS transmission is scheduled in the third period.
  • the UE may skip CSI on PUCCH and SRS transmission for the PCell and may perform CSI on PUSCH and SRS transmission for the SCell. Alternatively, the UE may perform CSI on PUCCH and SRS transmission for the PCell on a best effort basis during the fourth period.
  • the UE performs CSI on PUCCH and SRS transmission for the PCell. Otherwise, the UE skips CSI on PUCCH and SRS transmission for the PCell. After the fourth period, the UE performs CSI on PUCCH and SRS transmission for each serving cell.
  • FIG. 6 is a flowchart describing UE operation according to the first embodiment of the present disclosure.
  • the UE receives various configuration information from the ENB and performs DRX, CSI and SRS configuration accordingly.
  • the UE initiates DRX operation and CSI/SRS transmission.
  • unexpected extension refers to generation of an event extending the active time within a preset duration preceding the last subframe of the active time.
  • Expected extension refers to generation of an event extending the active time before the preset duration preceding the last subframe of the active time.
  • the UE proceeds to operation 625 at which the UE continues CSI/SRS transmission in the active time. If the extension is unexpected, the UE proceeds to operation 630 at which the UE checks whether PUSCH/PUCCH parallel transmission is configured.
  • PUSCH/PUCCH parallel transmission is configured, as a transport format change is not a serious problem, the UE proceeds to operation 625 .
  • the UE proceeds to operation 635 at which the UE determines the third period and fourth period.
  • the UE performs operations in accordance with each period. After the fourth period, the UE returns to operation 625 and continues CSI/SRS transmission during the active time.
  • the ENB receiving CSI/SRS information may determine the third period and fourth period and consider that the UE performs CSI/SRS transmission after the third period and the fourth period, the UE may or may not perform CSI/SRS transmission during the fourth period, and, when the third period is short in particular, occurrence of CSI/SRS transmission is highly improbable in the former part of the fourth period.
  • the sum of the third period length and the fourth period length is always the same, and the third period length and the fourth period length may each be varied according to the point in time when an event extending the active time occurs.
  • the SRS is used by the ENB to identify UE uplink channel states and to maintain UE uplink transmission timing. For identifying uplink channel states, it is preferable to steadily transmit the SRS with a long cycle; and, for maintaining uplink transmission timing, it is preferable to frequently transmit the SRS with a short cycle at a point in time when uplink data transmission is expected.
  • long term SRS or RRC-SRS
  • short term SRS or L1-SRS
  • Long term SRS it is configured and enabled by an RRC control message. SRS transmission resources and cycles are configured by the RRC control message. The UE periodically transmits the long term SRS if a preset condition is satisfied. As the long term SRS is enabled by an RRC control message, it cannot be rapidly enabled or disabled but may provide more detailed configuration information.
  • Short term SRS it is configured and enabled through the PDCCH.
  • Information regarding SRS transmission resources, cycles and repetition count are configured through PDCCH.
  • the UE performs SRS transmission.
  • Some of the configuration information such as the cycle and repetition count may be configured in advance through an RRC control message.
  • the short term SRS is enabled through L1 signaling, it may be rapidly enabled in comparison to the RRC-SRS.
  • a SCell is deactivated, as the SCell does not have to maintain uplink transmission timing, the need for RRC-SRS transmission is reduced.
  • the need for RRC-SRS transmission is reduced.
  • the L1-SRS is a command issued by the ENB to repeatedly transmit an SRS for a short time, it may be unreasonable of the UE to determine whether to transmit the SRS according to current UE states.
  • the UE does not transmit an RRC-SRS when the SCell is deactivated or the transmission time belongs to non active time.
  • the UE determines whether to transmit an RRC-SRS by itself in the fourth period.
  • the UE transmits an L1-SRS without consideration of active time or SCell activation states.
  • FIG. 7 is a sequence diagram describing UE and ENB operations according to the second embodiment of the present disclosure.
  • the ENB configures SRS transmission of the UE for an SCell needing maintenance of uplink transmission timing.
  • RRC Connection Reconfiguration may contain the following information.
  • the UE performs RRC-SRS configuration (SRS based on RRC signaling) and starts SRS transmission from the first subframe indicated by srs-ConfigIndex demanding SRS transmission.
  • the UE continues SRS transmission while the serving cell is activated.
  • a serving cell When a serving cell is activated during DRX active time, the serving cell is regarded as being activated. That is, an activated serving cell remains active in the active time of DRX operation (refer to Section 5.7 and 5.13 of TS 36.321 for more detailed information on DRX active time and DRX active state).
  • the serving cell is deactivated (that is, the active time expires or MAC CE indicating serving cell deactivation is received).
  • the UE stops RRC-SRS transmission to the serving cell.
  • the serving cell is activated again.
  • the UE resumes RRC-SRS transmission to the serving cell.
  • the ENB needs uplink channel state information for the serving cell immediately without time to wait for next RRC-SRS transmission.
  • the ENB sends an L1 command to the serving cell.
  • the L1 command is sent on the PDCCH of the serving cell and contains a Carrier Indicator Field (CIF) indicating a serving cell to send an L1-SRS.
  • the L1 command may contain the following information.
  • the above information may be signaled to the UE in advance owing to limited space of the L1 command.
  • the L1 command may contain only index information indicating a portion of the pre-signaled information to be used.
  • the UE starts L1-SRS transmission to the indicated serving cell without consideration of activation states thereof.
  • L1-SRS transmission is started at a subframe closest to the requested point in time among subframes with configured SRS resources.
  • the UE stops L1-SRS transmission after reaching the configured number of L1-SRS transmissions.
  • the ENB performs uplink scheduling on the basis of the received L1-SRS transmissions.
  • FIG. 8 is a flowchart describing UE operation according to the second embodiment of the present disclosure.
  • the UE receives various configuration information from the ENB and performs DRX and SRS configuration accordingly.
  • the UE initiates DRX operation and SRS transmission.
  • the active time is extended at operation 815
  • the UE proceeds to operation 820 at which the UE checks whether the active time extension is expected or unexpected.
  • unexpected extension refers to generation of an event extending the active time within a preset duration preceding the last subframe of the active time.
  • Expected extension refers to generation of an event extending the active time before the preset duration preceding the last subframe of the active time.
  • the UE proceeds to operation 825 at which the UE continues RRC-SRS transmission and L1-SRS transmission in the active time. If the extension is unexpected, the UE proceeds to operation 830 at which the UE checks whether PUSCH/PUCCH parallel transmission is configured.
  • the UE proceeds to operation 825 . If PUSCH/PUCCH parallel transmission is not configured, the UE proceeds to operation 835 at which the UE determines the third period and fourth period. At operation 840 , the UE performs operations in accordance with each period.
  • the UE After the fourth period, the UE returns to operation 825 and continues CSI/SRS transmission during the active time. In the third period, the UE performs both RRC-SRS transmission and L1-SRS transmission. In the fourth period, the UE may stop RRC-SRS transmission and perform L1-SRS transmission, or may perform RRC-SRS transmission on a best effort basis. That is, if time enough to prepare RRC-SRS transmission is given between a point in time when RRC-SRS transmission is known and a point in time when RRC-SRS transmission is to be performed, the UE performs RRC-SRS transmission. Otherwise, the UE skips RRC-SRS transmission.
  • the ENB receiving CSI/SRS information may determine the third period and fourth period and consider that the UE performs RRC-SRS transmission after the third period and the fourth period, the UE may or may not perform RRC-SRS transmission during the fourth period, and, when the third period is short in particular, occurrence of CSI/SRS transmission is highly improbable in the former part of the fourth period.
  • the sum of the third period length and the fourth period length is always the same, and the third period length and the fourth period length may each be varied according to the point in time when an event extending the active time occurs.
  • the third embodiment relates to SRS transmission by a UE in carrier aggregation operation. More specifically, in performing RRC-SRS and L1-SRS transmission to a SCell, when the active state of the SCell is extended, the UE may consider whether the active state extension is expected or unexpected.
  • a SCell When a SCell is in active state, the SCell is activated and remains in the DRX active time.
  • a serving cell may be activated or deactivated.
  • the PCell is always activated.
  • a SCell is activated in the case of
  • a SCell is activated in the case of
  • the deactivation timer is configured for each Scell.
  • the deactivation timer is restarted in the case of reception of an uplink grant for the Scell, reception of a downlink assignment for the Scell, or reception of an Activation/Deactivation MAC CE indicating activation of the Scell.
  • events extending the active state of a Scell are as follows.
  • the UE may be unable to perform SRS transmission if the following situation occurs.
  • the UE does not prepare SRS transmission under the assumption that the Scell will be deactivated at the subframe n; but, due to abrupt extension of the active state of the Scell, the UE has to perform SRS transmission.
  • a strategy similar to that used in the first embodiment may be utilized. That is, assuming that the active state is scheduled to end at a subframe n owing to expiration of the deactivation timer and an event extending the active state occurs at a subframe n ⁇ k, a fifth period, sixth period, seventh period and eighth period are defined as follows.
  • Fifth period a duration consisting of the subframe n and x ⁇ 1 subframes preceding the subframe n. If x is assumed to be 4, the subframe n ⁇ 3, subframe n ⁇ 2, subframe n ⁇ 1 and subframe n constitute the fifth period. Reception of a DL assignment or UL grant for the Scell within the fifth period is described as unexpected extension of the active state.
  • x is a parameter related to processing capabilities to cope with active state extension. It is preferable for x to have a single fixed value for all UEs including low end terminals with low performance.
  • a duration consisting of a subframe at which an event extending the active state (e.g. reception of a DL assignment or UL grant for the Scell) has occurred and x ⁇ 1 subframes following the subframe.
  • an event extending the active state e.g. reception of a DL assignment or UL grant for the Scell
  • the sixth period consists of the subframe n ⁇ 3, subframe n ⁇ 2, subframe n ⁇ 1 and subframe n. If an event extending the active state has occurred at a subframe n ⁇ 2, the sixth period consists of the subframe n ⁇ 2, subframe n ⁇ 1, subframe n and subframe n+1.
  • Seventh period a duration in which the fifth period and sixth period overlap each other. That is, the seventh period consists of the subframes [n ⁇ k, n] (from n ⁇ k to n, inclusive). The last subframe of the seventh period is the subframe at which the active state has been expected to end.
  • the seventh period has already belonged to the active state before extension of the active state, it is possible to transmit an SRS regardless of UE processing capabilities. Hence, determination of whether to transmit an SRS by the UE in the seventh period may reduce the chance for the ENB to receive an SRS, causing system performance degradation.
  • Eighth period a duration of the sixth period not overlapping with the fifth period. That is, the eighth period consists of the subframes [n+1, n ⁇ k+x] (inclusive).
  • the UE may be able or unable to transmit an RRC-SRS during the eighth period according to UE capability and the eighth period length.
  • the eighth period length approaches to x (that is, as the occurrence time of an event extending the active state becomes closer to the last subframe of the active state), the possibility of RRC-SRS transmission becomes lower in the former part of the eighth period and becomes higher in the latter part thereof. RRC-SRS transmission is possible after the eighth period.
  • the UE is aware of a schedule of L1-SRS transmission before at least four subframes from the scheduled L1-SRS transmission, the UE is always able to perform L1-SRS transmission regardless of the above periods.
  • the UE determines whether the active state extension is expected or unexpected; if unexpected extension, the UE performs RRC-SRS transmission in the seventh period, and may not perform RRC-SRS transmission or perform RRC-SRS transmission on a best effort basis in the eighth period; and the UE performs RRC-SRS transmission after the eighth period.
  • the UE when the active state is extended according to reception of UL grant or DL assignment for the Scell at the subframe n ⁇ k, the UE normally transmits an RRC-SRS in subframes [n ⁇ k, n] corresponding to the seventh period, may skip RRC-SRS transmission in subframes[n+1, n+x ⁇ k] corresponding to the eighth period, and normally transmits an RRC-SRS after the subframe n+x ⁇ k.
  • FIG. 9 is a flowchart describing UE operation according to the third embodiment of the present disclosure.
  • the UE receives various configuration information from the ENB and performs configurations for DRX, SRS and carrier aggregation operation accordingly.
  • the UE initiates DRX operation, carrier aggregation operation and SRS transmission.
  • the UE proceeds to operation 920 at which the UE checks whether the active state extension is of type 1 or of type 2. The UE proceeds to operation 925 if type 1 extension, and proceeds to operation 935 if type 2 extension.
  • type 1 extension indicates an active state extension due to reception of Activation/Deactivation MAC CE or reception of DL assignment or UL grant before the fifth period.
  • Type 2 extension indicates an active state extension due to reception of DL assignment or UL grant during the fifth period.
  • the UE continues RRC-SRS transmission and L1-SRS transmission to the Scell.
  • the UE determines the seventh period and eighth period.
  • the UE performs operations in accordance with each period. After the eighth period, the UE returns to operation 925 and continues SRS transmission in the active state.
  • the ENB receiving SRS information for a Scell may determine the seventh period and eighth period and consider that the UE performs RRC-SRS transmission after the seventh period and the eighth period, the UE may or may not perform SRS transmission during the eighth period, and, when the seventh period is short in particular, occurrence of SRS transmission is highly improbable in the former part of the eighth period.
  • the sum of the seventh period length and the eighth period length is always the same, and the seventh period length and the eighth period length may each be varied according to the point in time when an event extending the active state occurs.
  • FIG. 10 is a block diagram of a user equipment according to an embodiment of the present disclosure.
  • the user equipment may include a transceiver unit 1005 , a control unit 1010 , a mux/demux unit 1015 , a control message handler 1030 , and various higher layer units 1020 and 1025 .
  • the transceiver unit 1005 receives data and control signals through downlink channels of a serving cell and sends data and control signals through uplink channels. When multiple serving cells are configured, the transceiver unit 1005 may send and receive data and control signals through the serving cells.
  • the mux/demux unit 1015 multiplexes data coming from the higher layer units 1020 and 1025 or the control message handler 1030 , and demultiplexes data received by the transceiver unit 1005 and forwards the demultiplexed data to the higher layer units 1020 and 1025 or the control message handler 1030 .
  • the control message handler 1030 processes a control message received from a base station and performs a corresponding operation. For example, when DRX related parameters are received, the control message handler 1030 forwards the same to the control unit 1010 .
  • the higher layer units 1020 and 1025 maybe configured on a service basis.
  • the higher layer units 1020 and 1025 may process user data generated by service applications such as File Transfer Protocol (FTP) and Voice over Internet Protocol (VoIP) and forward the processed user data to the mux/demux unit 1015 , and delivers data coming from the mux/demux unit 1015 to appropriate service applications at the higher layer.
  • FTP File Transfer Protocol
  • VoIP Voice over Internet Protocol
  • the control unit 1010 examines scheduling commands such as UL grants received through the transceiver unit 1005 , and controls the transceiver unit 1005 and the mux/demux unit 1015 so that uplink transmissions are performed at proper points in time with appropriate transmission resources.
  • the control unit 1010 controls the transceiver unit 1005 for DRX operation and CSI/SRS transmission.
  • FIG. 11 is a block diagram of a base station according to an embodiment of the present disclosure.
  • the base station of FIG. 11 includes a transceiver unit 1105 , a control unit 1110 , a mux/demux unit 1120 , a control message handler 1135 , various higher layer units 1125 and 1130 , and a scheduler 1115 .
  • the transceiver unit 1105 sends data and control signals through a downlink carrier and receives data and control signals through an uplink carrier. When multiple carriers are configured, the transceiver unit 1105 may send and receive data and control signals through the multiple carriers.
  • the mux/demux unit 1120 multiplexes data coming from the higher layer units 1125 and 1130 or the control message handler 1135 , and demultiplexes data received by the transceiver unit 1105 and forwards the demultiplexed data to the higher layer units 1125 and 1130 , the control message handler 1135 or the control unit 1110 .
  • the control message handler 1135 processes a control message received from a user equipment and performs a corresponding operation, and generates a control message to be sent to a user equipment and forwards the control message to a lower layer.
  • the higher layer units 1125 and 1130 may be configured on a terminal and service basis.
  • the higher layer units 1125 and 1130 may process user data generated by service applications such as FTP and VoIP and forward the processed user data to the mux/demux unit 1120 , and process data coming from the mux/demux unit 1120 and deliver the processed data to service applications at the higher layer.
  • the control unit 1110 determines CSI/SRS transmission times of user equipments and controls the transceiver unit 1105 accordingly.
  • the scheduler 1115 allocates transmission resources to a user equipment at appropriate points in time in consideration of buffer states, channel states and active time of the user equipment, and controls the transceiver unit 1105 to send or receive a signal to or from the user equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
US14/111,456 2011-04-11 2012-04-10 Method and apparatus for user equipment in battery saving mode transmitting reverse direction control signal in mobile communication system Abandoned US20140029563A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/111,456 US20140029563A1 (en) 2011-04-11 2012-04-10 Method and apparatus for user equipment in battery saving mode transmitting reverse direction control signal in mobile communication system

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US201161473966P 2011-04-11 2011-04-11
US201161521910P 2011-08-10 2011-08-10
US201161531185P 2011-09-06 2011-09-06
US201161552114P 2011-10-27 2011-10-27
US201161553359P 2011-10-31 2011-10-31
US201161556779P 2011-11-07 2011-11-07
KR1020120037390A KR101956213B1 (ko) 2011-04-11 2012-04-10 이동통신 시스템에서 배터리 세이빙 모드의 단말이 역방향 제어 신호를 전송하는 방법 및 장치
US14/111,456 US20140029563A1 (en) 2011-04-11 2012-04-10 Method and apparatus for user equipment in battery saving mode transmitting reverse direction control signal in mobile communication system
KR10-2012-0037390 2012-04-10
PCT/KR2012/002727 WO2012141481A2 (fr) 2011-04-11 2012-04-10 Procédé et appareil pour équipement utilisateur dans un mode d'économie de batterie transmettant un signal de commande en direction inverse dans un système de communication mobile

Publications (1)

Publication Number Publication Date
US20140029563A1 true US20140029563A1 (en) 2014-01-30

Family

ID=47284463

Family Applications (6)

Application Number Title Priority Date Filing Date
US14/111,530 Active 2032-08-04 US9622164B2 (en) 2011-04-11 2012-04-10 Method and apparatus for transmitting/receiving data in mobile communication system
US13/443,199 Active 2034-11-03 US9432927B2 (en) 2011-04-11 2012-04-10 Method and apparatus for effectively controlling cell reselection priority of user equipment in CSG cell
US14/111,456 Abandoned US20140029563A1 (en) 2011-04-11 2012-04-10 Method and apparatus for user equipment in battery saving mode transmitting reverse direction control signal in mobile communication system
US15/250,368 Active US9578563B2 (en) 2011-04-11 2016-08-29 Method and apparatus for effectively controlling cell reselection priority of user equipment in CSG cell
US15/483,979 Active US10362621B2 (en) 2011-04-11 2017-04-10 Method and apparatus for transmitting/receiving data in mobile communication system
US16/518,875 Active US10887942B2 (en) 2011-04-11 2019-07-22 Method and apparatus for transmitting/receiving data in mobile communication system

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US14/111,530 Active 2032-08-04 US9622164B2 (en) 2011-04-11 2012-04-10 Method and apparatus for transmitting/receiving data in mobile communication system
US13/443,199 Active 2034-11-03 US9432927B2 (en) 2011-04-11 2012-04-10 Method and apparatus for effectively controlling cell reselection priority of user equipment in CSG cell

Family Applications After (3)

Application Number Title Priority Date Filing Date
US15/250,368 Active US9578563B2 (en) 2011-04-11 2016-08-29 Method and apparatus for effectively controlling cell reselection priority of user equipment in CSG cell
US15/483,979 Active US10362621B2 (en) 2011-04-11 2017-04-10 Method and apparatus for transmitting/receiving data in mobile communication system
US16/518,875 Active US10887942B2 (en) 2011-04-11 2019-07-22 Method and apparatus for transmitting/receiving data in mobile communication system

Country Status (8)

Country Link
US (6) US9622164B2 (fr)
EP (3) EP3512122B1 (fr)
JP (2) JP6033842B2 (fr)
KR (3) KR101929307B1 (fr)
CN (2) CN103620984B (fr)
AU (1) AU2012243644B2 (fr)
ES (2) ES2724802T3 (fr)
WO (3) WO2012141482A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9210657B2 (en) * 2012-10-28 2015-12-08 Lg Electronics Inc. Operation with various timers in a wireless communication system
WO2016010904A1 (fr) * 2014-07-14 2016-01-21 Amazon Technologies, Inc. Procédé de réception discontinue (drx) en connectivité double
US20180122915A1 (en) * 2016-06-29 2018-05-03 International Business Machines Corporation Method and structure for forming mosfet with reduced parasitic capacitance
US20190141779A1 (en) * 2015-04-10 2019-05-09 Motorola Mobility Llc Drx handling in lte license assisted access operation
US20190288819A1 (en) * 2015-04-16 2019-09-19 Ofinno, Llc Secondary Cell Deactivation Timer Management in a Wireless Network
US10440691B2 (en) 2016-09-30 2019-10-08 Kt Corporation Method for controlling connection status of UE and apparatus thereof
US20200052870A1 (en) * 2017-07-12 2020-02-13 Qualcomm Incorporated Frame structure dependent configuration of physical channels
US10813028B2 (en) 2016-07-21 2020-10-20 Kt Corporation Method for performing mobility process of NB-IoT terminal, and apparatus therefor

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104244367B (zh) * 2006-11-22 2017-12-22 沃达方集团有限公司 电信网络和装置
KR101929307B1 (ko) * 2011-04-11 2018-12-17 삼성전자 주식회사 Ｃｓｇ 셀에서 단말이 셀 재선택 우선 순위를 효율적으로 제어하는 방법 및 장치
KR101948801B1 (ko) 2011-04-11 2019-02-18 삼성전자주식회사 Ｍｂｍｓ 지원 사용자 장치의 데이터 수신 방법 및 장치
CN105577364B (zh) * 2011-10-27 2019-11-05 华为技术有限公司 一种加密方法、解密方法和相关装置
US9049698B2 (en) 2012-01-18 2015-06-02 Mediatek Inc. Method of enhanced connection recovery and cell selection
US9161280B2 (en) * 2012-06-27 2015-10-13 Qualcomm Incorporated Network driven cell reselection method for UEs playing eMBMS content in unicast idle mode
JP5990335B2 (ja) * 2012-10-30 2016-09-14 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおける優先順位ハンドリングに基づくセル再選択方法及びそれをサポートする装置
US9900815B2 (en) 2012-10-30 2018-02-20 Lg Electronics Inc. Method for handling frequency priority based on terminal supporting characteristics in wireless communication system and apparatus for supporting same
WO2014182233A2 (fr) * 2013-05-08 2014-11-13 Telefonaktiebolaget L M Ericsson (Publ) Ré-établissement de transfert de données de paquet
CN105340307A (zh) * 2013-06-28 2016-02-17 日本电气株式会社 用于prose组通信的安全
CN105453632B (zh) * 2013-08-04 2019-03-26 Lg电子株式会社 在无线通信系统中调节设备对设备时序的方法和装置
PL3050392T3 (pl) 2013-09-27 2020-10-05 Nokia Solutions And Networks Oy Zoptymalizowana procedura do autonomicznej mobilności urządzenia użytkownika
CN105917702B (zh) * 2014-01-14 2020-03-03 Lg电子株式会社 无线通信系统中用于双连接的路径切换方法及其装置
US9408180B2 (en) 2014-03-05 2016-08-02 T-Mobile Usa, Inc. Traffic management for heterogenous networks
US9408118B2 (en) 2014-03-05 2016-08-02 T-Mobile Usa, Inc. Traffic management for heterogenous networks
US9538540B2 (en) * 2014-03-06 2017-01-03 Mediatek Inc. Smart congestion control for RRC connected mode in LTE systems
KR102279880B1 (ko) * 2014-03-11 2021-07-21 삼성전자 주식회사 무선 통신 시스템에서 베어러의 비트레이트를 동적으로 운영하는 방법 및 장치
EP3206454B1 (fr) * 2014-10-23 2018-12-05 Huawei Technologies Co. Ltd. Procédés de connexion de commande de ressource radio (rrc) et appareils
EP3241365B1 (fr) * 2015-01-30 2018-12-19 Sony Corporation Appareil et procédés de télécommunication
WO2016121670A1 (fr) * 2015-01-30 2016-08-04 京セラ株式会社 Terminal d'utilisateur et station de base
WO2016127341A1 (fr) * 2015-02-11 2016-08-18 华为技术有限公司 Procédé, dispositif et système pour notifier une priorité de groupe dans une communication de groupe
US10201016B2 (en) * 2015-02-18 2019-02-05 Qualcomm Incorporated Techniques for cell access using an unlicensed radio frequency spectrum band
US10129803B2 (en) * 2015-03-06 2018-11-13 Nokia Solutions And Networks Oy Cell selection
WO2016148357A1 (fr) * 2015-03-17 2016-09-22 엘지전자(주) Procédé et appareil de transmission/réception de données pour terminal dans un système de communication sans fil
WO2016153130A1 (fr) * 2015-03-23 2016-09-29 엘지전자(주) Procédé et dispositif pour transmettre ou recevoir des données par un terminal dans un système de communication sans fil
WO2016161625A1 (fr) 2015-04-10 2016-10-13 华为技术有限公司 Procédé, appareil et dispositif de détermination de temps d'application de rapport csi
CN106162578B (zh) * 2015-04-24 2020-03-17 北京智谷睿拓技术服务有限公司 转发控制方法、移动终端信息发送方法、及其装置
WO2016208950A1 (fr) * 2015-06-23 2016-12-29 엘지전자(주) Procédé d'émission/réception de données dans un système de communication sans fil et dispositif associé
US10582522B2 (en) * 2015-09-04 2020-03-03 Lg Electronics Inc. Data transmission and reception method and device of terminal in wireless communication system
WO2017170159A1 (fr) 2016-03-31 2017-10-05 京セラ株式会社 Terminal sans fil et station de base
US10149344B2 (en) * 2016-05-09 2018-12-04 Htc Corporation Device and method of handling a radio resource control state change
WO2017200299A1 (fr) * 2016-05-18 2017-11-23 엘지전자 주식회사 Procédé de réalisation d'une procédure de resélection de cellule par un terminal et appareil de prise en charge correspondant
US10771127B2 (en) 2016-07-20 2020-09-08 Nec Corporation Methods of signalling in an advanced wireless communication system supporting multi-user superposition transmission
US20170013651A1 (en) * 2016-09-22 2017-01-12 Mediatek Singapore Pte. Ltd. NAS Security And Handling Of Multiple Initial NAS Messages
CN108616898B (zh) * 2016-12-05 2021-04-13 中国电信股份有限公司 频率优先级信息处理方法和系统以及相关设备
JP7000449B2 (ja) 2017-03-23 2022-02-10 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおける次のメッセージのために使われるベアラのタイプを指示する方法及び装置
EP3611997B1 (fr) * 2017-05-10 2022-03-02 LG Electronics Inc. Procédés pour demander une connexion rrc et appareils le prenant en charge
WO2018207156A1 (fr) * 2017-05-11 2018-11-15 Telefonaktiebolaget Lm Ericsson (Publ) Prise en charge d'une sélection de réseau central dédié assistée par une station mobile
WO2018229657A1 (fr) * 2017-06-16 2018-12-20 Telefonaktiebolaget Lm Ericsson (Publ) Appareils et procédés pour la gestion d'une défaillance de la protection de l'intégrité d'un support radio de données dans un réseau new radio (nr)
EP3644687B1 (fr) * 2017-08-23 2021-07-07 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de transmission de données, dispositif terminal d'émission et dispositif terminal de réception
CN108401538B (zh) * 2017-09-06 2021-08-10 北京小米移动软件有限公司 下行数据传输方法及装置、用户设备、基站
US11451961B2 (en) * 2017-09-28 2022-09-20 Telefonaktiebolaget Lm Ericsson (Publ) Security enhancements for early data transmissions
US10659257B2 (en) * 2017-10-31 2020-05-19 Qualcomm Incorporated Low latency multiplexing operations
US11252669B2 (en) * 2018-07-25 2022-02-15 Qualcomm Incorporated Selective extension of an active period of a DRX cycle for reselection
US11234180B2 (en) * 2019-01-03 2022-01-25 Qualcomm Incorporated Mobility procedures with hierarchical mobility
JP6851406B2 (ja) * 2019-02-07 2021-03-31 シャープ株式会社 端末装置、基地局装置、方法、および、集積回路
CN113365358B (zh) * 2019-04-26 2023-09-05 维沃移动通信有限公司 一种信道监听方法、终端及网络设备
EP4284044A3 (fr) * 2019-04-29 2024-02-21 Telefonaktiebolaget LM Ericsson (publ) Gestion de multiples procédures d'authentification dans la 5g
WO2020223861A1 (fr) * 2019-05-05 2020-11-12 Oppo广东移动通信有限公司 Procédé et appareil de configuration de stratégie d'équipement utilisateur, station de base et support de stockage
CN112437470B (zh) * 2019-08-26 2022-07-19 中国移动通信有限公司研究院 一种小区重选方法及设备
US20240056870A1 (en) * 2019-09-18 2024-02-15 Telefonaktiebolaget Lm Ericsson (Publ) Subscriber/service based radio access network reliability
WO2021087950A1 (fr) 2019-11-08 2021-05-14 Zte Corporation Techniques d'économie d'énergie
KR102265514B1 (ko) * 2019-11-22 2021-06-15 주식회사 엘지유플러스 무선 통신 시스템의 데이터 송수신 방법 및 장치
JP7299571B2 (ja) * 2020-07-13 2023-06-28 華碩電脳股▲分▼有限公司 無線通信システムにおいて設定された上りリンクグラントのバンドルのためのｄｒｘタイマを取り扱うための方法および装置
CN112385270B (zh) * 2020-10-15 2023-10-03 北京小米移动软件有限公司 接入控制信息处理方法及装置、通信设备及存储介质
CN116325910A (zh) * 2021-01-08 2023-06-23 Oppo广东移动通信有限公司 无线通信方法和终端设备
EP4298863B1 (fr) * 2021-03-16 2024-08-28 Ofinno, LLC Transmission de petites données
CN113518459B (zh) * 2021-07-14 2023-07-04 中国联合网络通信集团有限公司 资源调度处理方法、装置及电子设备
US11792712B2 (en) 2021-12-23 2023-10-17 T-Mobile Usa, Inc. Cell reselection priority assignment based on performance triggers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120178445A1 (en) * 2009-08-17 2012-07-12 Nokia Corporation Discontinuous Reception for Multi-Component Carrier System
US20140198701A1 (en) * 2011-08-12 2014-07-17 Telefonaktiebolaget L M Ericsson (Publ) Deciding Whether to Send Uplink Control Signaling Based on the Active Time Status of a User Equipment Configured with Discontinuous Reception (DRX)

Family Cites Families (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US124301A (en) * 1872-03-05 Improvement in safety-guards for hatchways
KR100548344B1 (ko) 2003-05-13 2006-02-02 엘지전자 주식회사 이동통신 시스템에서의 ｒｒｃ연결방법
KR100595644B1 (ko) 2004-01-09 2006-07-03 엘지전자 주식회사 이동통신 시스템에서 점대다 서비스를 위한 통지 지시자 수신방법
WO2005104402A1 (fr) 2004-03-30 2005-11-03 Mitsubishi Denki Kabushiki Kaisha Terminal de communication mobile et systeme de radiocommunication
ATE443413T1 (de) 2005-02-16 2009-10-15 Panasonic Corp Unterstützung mobiler endgeräte in einem multicast- oder broadcastdienst mit mehreren trägern
KR101161025B1 (ko) 2005-05-12 2012-06-28 삼성전자주식회사 이동통신 시스템에서 트래픽 채널을 미리 설정하는 방법 및장치
KR100703400B1 (ko) 2005-07-15 2007-04-03 삼성전자주식회사 멀티 모드 이동 단말에서 단말 인증정보 전달 장치
KR101213285B1 (ko) * 2006-01-04 2012-12-17 삼성전자주식회사 이동통신 시스템에서 아이들모드 단말기의 세션 설정 프로토콜 데이터를 전송하는 방법 및 장치
KR100901375B1 (ko) 2006-08-03 2009-06-05 삼성전자주식회사 광대역 무선통신 시스템에서 상향링크 데이터를 송신하기위한 장치 및 방법
KR101424258B1 (ko) * 2006-08-23 2014-08-13 엘지전자 주식회사 무선통신 시스템에서 랜덤 액세스 과정을 수행하는 방법
CN101617553A (zh) * 2007-01-08 2009-12-30 诺基亚公司 用于提供关于通信系统的信道质量的报告的方法、设备和系统
WO2008099340A1 (fr) * 2007-02-12 2008-08-21 Nokia Corporation Appareil, procédé et produit de programme informatique fournissant une signalisation b entre des nœuds b d'informations d'état de cellule
KR20080084533A (ko) 2007-03-16 2008-09-19 엘지전자 주식회사 이동통신 시스템에서의 데이터 통신 방법
EP1973355A1 (fr) 2007-03-19 2008-09-24 Nokia Siemens Networks Gmbh & Co. Kg Procédé et appareil de configuration de temporisateurs de mode
BRPI0721553B1 (pt) 2007-03-30 2019-08-27 Telecom Italia Spa método para habilitar conexão de um terminal de comunicação móvel com capacidades de comunicação sem fio de curto alcance para uma rede de radiocomunicação, terminal de comunicação móvel com capacidades de comunicação sem fio de curto alcance
US20090015408A1 (en) 2007-07-10 2009-01-15 Yoshinori Asai Handy-type wireless tag reader/writer
US8699711B2 (en) * 2007-07-18 2014-04-15 Interdigital Technology Corporation Method and apparatus to implement security in a long term evolution wireless device
KR101479340B1 (ko) * 2007-09-18 2015-01-06 엘지전자 주식회사 무선통신 시스템에서 셀 재선택 과정을 수행하는 방법
EP2046090A1 (fr) 2007-10-02 2009-04-08 Panasonic Corporation Gestion de signalisation de contrôle de session pour services de multidiffusion/radiodiffusion
KR20090038752A (ko) 2007-10-16 2009-04-21 엘지전자 주식회사 데이터 전송 서비스를 위한 무선연결 설정방법
KR20090045039A (ko) 2007-10-30 2009-05-07 엘지전자 주식회사 우선순위에 기반한 셀 재선택 방법
US9215731B2 (en) * 2007-12-19 2015-12-15 Qualcomm Incorporated Method and apparatus for transfer of a message on a common control channel for random access in a wireless communication network
US8559946B2 (en) * 2008-02-08 2013-10-15 Qualcomm Incorporated Discontinuous transmission signaling over an uplink control channel
US8249004B2 (en) * 2008-03-14 2012-08-21 Interdigital Patent Holdings, Inc. Coordinated uplink transmission in LTE DRX operations for a wireless transmit receive unit
US8780732B2 (en) 2008-03-18 2014-07-15 Qualcomm Incorporated Method of network management by assistance from terminal using control-plane signaling between terminal and network
TWI539844B (zh) * 2008-03-24 2016-06-21 內數位專利控股公司 封閉用戶群組胞元之胞元選擇及再選擇
KR101437693B1 (ko) 2008-03-31 2014-09-03 엘지전자 주식회사 핸드오버 과정 수행방법
US8195991B2 (en) * 2008-06-20 2012-06-05 Qualcomm Incorporated Handling of integrity check failure in a wireless communication system
CN101742580B (zh) * 2008-11-11 2012-05-23 华为技术有限公司 小区重选方法及装置
CN101801068B (zh) * 2009-02-10 2012-04-25 电信科学技术研究院 一种小区重选优先级的确定方法及设备
KR101580151B1 (ko) 2009-03-16 2015-12-24 삼성전자주식회사 이동통신시스템에서 무선링크 실패로 인한 호 절단을 개선하기 위한 방법 및 시스템
US9210633B2 (en) 2009-04-20 2015-12-08 Interdigital Patent Holdings, Inc. Method and apparatus for avoiding interference from closed subscriber group cells
US8437798B2 (en) 2009-04-27 2013-05-07 Motorola Mobility Llc Uplink scheduling support in multi-carrier wireless communication systems
KR101717522B1 (ko) 2009-04-27 2017-03-17 엘지전자 주식회사 다중 반송파를 지원하는 무선 통신 시스템에서 하향링크 제어채널을 모니터링하는 방법 및 장치
EP2421292B1 (fr) * 2009-04-30 2015-04-15 Huawei Technologies Co., Ltd. Procédé et dispositif d'établissement de mécanisme de sécurité de liaison d'interface radio
ATE550904T1 (de) * 2009-06-18 2012-04-15 Panasonic Corp Erweitertes direktzugriffsverfahren für mobile kommunikationen
US8731554B2 (en) 2009-07-07 2014-05-20 Sharp Kabushiki Kaisha Cell reselecting method and mobile station device
CN101990184B (zh) * 2009-08-06 2014-09-10 中兴通讯股份有限公司 一种终端的小区选择或者小区重选方法
US9125182B2 (en) * 2009-10-02 2015-09-01 Blackberry Limited System and method for determining establishment causes for emergency sessions
WO2011083151A1 (fr) * 2010-01-08 2011-07-14 Research In Motion Limited Établissement d'une connexion radio d'urgence
CN106028273B (zh) * 2010-03-23 2020-01-14 Iot控股公司 用于机器类型通信的方法及wtru
WO2011121398A1 (fr) * 2010-04-01 2011-10-06 Nokia Corporation Procédé et appareil destinés à assurer la gestion de rapports de mesure après un changement de cellule
US8655305B2 (en) * 2011-03-21 2014-02-18 Htc Corporation Methods for requesting emergency bearer services for low priority devices, and apparatuses using the same
US20130308545A1 (en) * 2011-03-29 2013-11-21 Lg Electronics Inc. Method for user equipment transmitting/receiving data in wireless communication system and apparatus for same
KR101929307B1 (ko) * 2011-04-11 2018-12-17 삼성전자 주식회사 Ｃｓｇ 셀에서 단말이 셀 재선택 우선 순위를 효율적으로 제어하는 방법 및 장치
CN103782523B (zh) * 2011-07-01 2017-08-01 英特尔公司 用于均匀圆形阵列（uca）的结构化码本
WO2013162277A1 (fr) * 2012-04-24 2013-10-31 Lg Electronics Inc. Procédé et appareil de sélection d'une cellule dans un système de communications sans fil
US9749904B1 (en) * 2013-03-29 2017-08-29 Syniverse Communications, Inc. Circuit switch voice roaming to LTE network

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120178445A1 (en) * 2009-08-17 2012-07-12 Nokia Corporation Discontinuous Reception for Multi-Component Carrier System
US20140198701A1 (en) * 2011-08-12 2014-07-17 Telefonaktiebolaget L M Ericsson (Publ) Deciding Whether to Send Uplink Control Signaling Based on the Active Time Status of a User Equipment Configured with Discontinuous Reception (DRX)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9210657B2 (en) * 2012-10-28 2015-12-08 Lg Electronics Inc. Operation with various timers in a wireless communication system
WO2016010904A1 (fr) * 2014-07-14 2016-01-21 Amazon Technologies, Inc. Procédé de réception discontinue (drx) en connectivité double
US9374781B2 (en) 2014-07-14 2016-06-21 Amazon Technologies, Inc. Method for discontinuous reception (DRX) in dual connectivity
US20190141779A1 (en) * 2015-04-10 2019-05-09 Motorola Mobility Llc Drx handling in lte license assisted access operation
US11259356B2 (en) * 2015-04-10 2022-02-22 Motorola Mobility Llc DRX handling in LTE license assisted access operation
US11005633B2 (en) * 2015-04-16 2021-05-11 Ofinno, Llc Secondary cell deactivation timer management in a wireless network
US20190288819A1 (en) * 2015-04-16 2019-09-19 Ofinno, Llc Secondary Cell Deactivation Timer Management in a Wireless Network
US11824810B2 (en) 2015-04-16 2023-11-21 Ofinno, Llc Restarting a deactivation timer of a secondary cell in a wireless network
US20180122915A1 (en) * 2016-06-29 2018-05-03 International Business Machines Corporation Method and structure for forming mosfet with reduced parasitic capacitance
US10813028B2 (en) 2016-07-21 2020-10-20 Kt Corporation Method for performing mobility process of NB-IoT terminal, and apparatus therefor
US10440691B2 (en) 2016-09-30 2019-10-08 Kt Corporation Method for controlling connection status of UE and apparatus thereof
US20200052870A1 (en) * 2017-07-12 2020-02-13 Qualcomm Incorporated Frame structure dependent configuration of physical channels
US11863501B2 (en) * 2017-07-12 2024-01-02 Qualcomm Incorporated Frame structure for control signaling instances

Also Published As

Publication number Publication date
EP2698006B1 (fr) 2020-09-09
AU2012243644B2 (en) 2016-02-25
CN103620984B (zh) 2017-05-24
CN103620984A (zh) 2014-03-05
EP2698006A2 (fr) 2014-02-19
EP3512122A1 (fr) 2019-07-17
WO2012141482A3 (fr) 2013-01-10
US20140036685A1 (en) 2014-02-06
US9622164B2 (en) 2017-04-11
EP2698930B1 (fr) 2019-03-06
US9578563B2 (en) 2017-02-21
WO2012141482A2 (fr) 2012-10-18
WO2012141481A2 (fr) 2012-10-18
CN103597878B (zh) 2017-12-08
US20160366625A1 (en) 2016-12-15
US9432927B2 (en) 2016-08-30
EP2698930A2 (fr) 2014-02-19
WO2012141480A2 (fr) 2012-10-18
US20120258750A1 (en) 2012-10-11
KR101978767B1 (ko) 2019-05-15
WO2012141481A3 (fr) 2013-01-10
JP6033842B2 (ja) 2016-11-30
JP2017060172A (ja) 2017-03-23
KR101903041B1 (ko) 2018-10-02
KR20120115954A (ko) 2012-10-19
KR101929307B1 (ko) 2018-12-17
AU2012243644A8 (en) 2014-01-09
US20170303334A1 (en) 2017-10-19
KR20180107772A (ko) 2018-10-02
CN103597878A (zh) 2014-02-19
US10887942B2 (en) 2021-01-05
EP3512122B1 (fr) 2020-06-03
JP6301428B2 (ja) 2018-03-28
EP2698930A4 (fr) 2014-09-24
US20190342938A1 (en) 2019-11-07
US10362621B2 (en) 2019-07-23
KR20120115946A (ko) 2012-10-19
EP2698006A4 (fr) 2015-08-05
AU2012243644A2 (en) 2014-11-13
AU2012243644A1 (en) 2013-10-17
ES2801325T3 (es) 2021-01-11
WO2012141480A3 (fr) 2013-01-10
ES2724802T3 (es) 2019-09-16
JP2014514850A (ja) 2014-06-19

Similar Documents

Publication Publication Date Title
US20140029563A1 (en) Method and apparatus for user equipment in battery saving mode transmitting reverse direction control signal in mobile communication system
US11070325B2 (en) Apparatus and method for discontinuous data reception in wireless communication system
JP6480540B2 (ja) 搬送波集積技術を使用する無線通信システムにおける副搬送波の不活性化方法及び装置
US9288803B2 (en) Method and apparatus of activating/deactivating secondary carriers in mobile communication system using carrier aggregation
US9730224B2 (en) Method and apparatus for activating or deactivating secondary carriers in time division duplex mobile communication system using carrier aggregation
EP3716683A1 (fr) Procédé et dispositif pour effectuer un transfert dans un système de communication mobile
US8908714B2 (en) Selective discontinuous reception method and related system and device
EP2698931B1 (fr) Procédé et appareil pour équipement utilisateur transmettant un signal de commande en direction inverse dans un système de communication mobile

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, SOENG HUN;VAN LIESHOUT, GERT-JAN;JEONG, KYEONG IN;SIGNING DATES FROM 20131002 TO 20131003;REEL/FRAME:031551/0952

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION