WO2019066547A1 - Procédé de rapport de capacité d'ue et dispositif prenant en charge le procédé - Google Patents

Procédé de rapport de capacité d'ue et dispositif prenant en charge le procédé Download PDF

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Publication number
WO2019066547A1
WO2019066547A1 PCT/KR2018/011520 KR2018011520W WO2019066547A1 WO 2019066547 A1 WO2019066547 A1 WO 2019066547A1 KR 2018011520 W KR2018011520 W KR 2018011520W WO 2019066547 A1 WO2019066547 A1 WO 2019066547A1
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WIPO (PCT)
Prior art keywords
band
network
data rate
message
capability information
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PCT/KR2018/011520
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English (en)
Inventor
Hongsuk Kim
Youngdae Lee
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Lg Electronics Inc.
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Publication of WO2019066547A1 publication Critical patent/WO2019066547A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to a wireless communication system, and more particularly, to a method in which reporting UE capability efficiently, and a device supporting the same.
  • an upper layer protocol defines a protocol state to consistently manage an operational state of a user equipment (UE), and indicates a function and procedure of the UE in detail.
  • UE user equipment
  • an RRC state is discussed such that an RRC_CONNECTED state and an RRC_IDLE state are basically defined, and an RRC_INACTIVE state is additionally introduced.
  • the UE capability has become large enough now on LTE, that on cell edges it is causing delays in the Attach procedure and delaying the voice camping triggering IRAT transitions. A way is needed to reducing the size of the UE capabilities reporting.
  • radio resources are wasted in reporting UE capability.
  • a method for a user equipment (UE) in wireless communication system may comprise: receiving, from a network, an enquiry message of a UE capability information message, wherein the enquiry message includes information on a data rate requested by the network; generating the UE capability information message which only includes information on band and/or band combination supported under the data rate; and transmitting the UE capability information message to the network.
  • UE user equipment
  • the data rate requested by the network may be at least one of AMBR (aggregated maximum bit rate), GBR (guaranteed bit rate) or allowed peak data rate.
  • the band combination may be CA (carrier aggregation) band combination and non-CA band combination.
  • the enquiry of the UE capability information message may include candidate band and/or band combination configured by the network.
  • the band and/or band combination may be selected among the candidate band and/or band combination.
  • the generating the UE capability information message may include excluding band and/or band combination which is already reported to the network.
  • the enquiry of the UE capability information message may include band processing parameter.
  • the band processing parameter may include at least one of modulation scheme, soft buffer or MIMO (multiple-input multiple-output) layers.
  • a user equipment (UE) in a wireless communication system may comprise: a transceiver for transmitting or receiving a radio signal; and a processor coupled to the transceiver, the transceiver configured to receive, from a network, an enquiry message of a UE capability information message, wherein the enquiry message includes information on a data rate requested by the network; the processor configured to generate the UE capability information message which only includes information on band and/or band combination supported under the data rate; and the transceiver configured to transmit the UE capability information message to the network.
  • the data rate requested by the network may be at least one of AMBR (aggregated maximum bit rate), GBR (guaranteed bit rate) or allowed peak data rate.
  • the band combination may be CA (carrier aggregation) band combination and non-CA band combination.
  • the enquiry of the UE capability information message may include candidate band and/or band combination configured by the network.
  • the band and/or band combination may be selected among the candidate band and/or band combination.
  • the processor may be configured to generate the UE capability information message by excluding band and/or band combination which is already reported to the network.
  • a base station (BS) in a wireless communication system may comprise: a transceiver for transmitting or receiving a radio signal; and a processor coupled to the transceiver, the transceiver configured to: transmit, to a user equipment (UE), an enquiry message of a UE capability information message, wherein the enquiry message includes information on the data rate configured by the BS; and receive, from the UE, the UE capability information message which only includes information on band and/or band combination supported under the data rate.
  • UE user equipment
  • the UE may reduce the size of UE capability information message by preventing from reporting UE capability that is not preferred by a network, or reporting UE capability that is already reported to the network. For that, the UE may generate the UE capability information message to only include supported CA band combinations and non-CA bands which does not exceed the requested data rate information. Further, the UE may generate the UE capability information message to exclude supported CA band combinations and non-CA bands which is already reported to the network.
  • FIG. 1 shows an example of a wireless communication system to which technical features of the present invention can be applied.
  • FIG. 2 shows another example of a wireless communication system to which technical features of the present invention can be applied.
  • FIG. 3 shows a block diagram of a user plane protocol stack to which technical features of the present invention can be applied.
  • FIG. 4 shows a block diagram of a control plane protocol stack to which technical features of the present invention can be applied.
  • Fig. 5 shows UE capability transfer procedure.
  • FIG. 6 shows an example of a method for reporting UE capability according to an embodiment of the present invention.
  • FIG. 7 shows an example of a method for reporting UE capability according to an embodiment of the present invention.
  • FIG. 8 shows a structure of UE according to an embodiment of the present invention.
  • FIG. 9 shows an example of a method for reporting UE capability according to an embodiment of the present invention.
  • FIG. 10 shows a structure of network according to an embodiment of the present invention.
  • the technical features described below may be used by a communication standard by the 3rd generation partnership project (3GPP) standardization organization, a communication standard by the institute of electrical and electronics engineers (IEEE), etc.
  • the communication standards by the 3GPP standardization organization include long-term evolution (LTE) and/or evolution of LTE systems.
  • LTE long-term evolution
  • LTE-A LTE-advanced
  • LTE-A Pro LTE-A Pro
  • NR 5G new radio
  • the communication standard by the IEEE standardization organization includes a wireless local area network (WLAN) system such as IEEE 802.11a/b/g/n/ac/ax.
  • WLAN wireless local area network
  • the above system uses various multiple access technologies such as orthogonal frequency division multiple access (OFDMA) and/or single carrier frequency division multiple access (SC-FDMA) for downlink (DL) and/or uplink (DL).
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • OFDMA and SC-FDMA may be used for DL and/or UL.
  • FIG. 1 shows an example of a wireless communication system to which technical features of the present invention can be applied.
  • FIG. 1 shows a system architecture based on an evolved-UMTS terrestrial radio access network (E-UTRAN).
  • E-UTRAN evolved-UMTS terrestrial radio access network
  • the aforementioned LTE is a part of an evolved-UTMS (e-UMTS) using the E-UTRAN.
  • e-UMTS evolved-UTMS
  • the wireless communication system includes one or more user equipment (UE; 10), an E-UTRAN and an evolved packet core (EPC).
  • the UE 10 refers to a communication equipment carried by a user.
  • the UE 10 may be fixed or mobile.
  • the UE 10 may be referred to as another terminology, such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a wireless device, etc.
  • the E-UTRAN consists of one or more base station (BS) 20.
  • the BS 20 provides the E-UTRA user plane and control plane protocol terminations towards the UE 10.
  • the BS 20 is generally a fixed station that communicates with the UE 10.
  • the BS 20 hosts the functions, such as inter-cell radio resource management (MME), radio bearer (RB) control, connection mobility control, radio admission control, measurement configuration/provision, dynamic resource allocation (scheduler), etc.
  • MME inter-cell radio resource management
  • RB radio bearer
  • connection mobility control such as connection mobility control, radio admission control, measurement configuration/provision, dynamic resource allocation (scheduler), etc.
  • the BS may be referred to as another terminology, such as an evolved NodeB (eNB), a base transceiver system (BTS), an access point (AP), etc.
  • eNB evolved NodeB
  • BTS base transceiver system
  • AP access point
  • a downlink (DL) denotes communication from the BS 20 to the UE 10.
  • An uplink (UL) denotes communication from the UE 10 to the BS 20.
  • a sidelink (SL) denotes communication between the UEs 10.
  • a transmitter may be a part of the BS 20, and a receiver may be a part of the UE 10.
  • the transmitter may be a part of the UE 10
  • the receiver may be a part of the BS 20.
  • the transmitter and receiver may be a part of the UE 10.
  • the EPC includes a mobility management entity (MME), a serving gateway (S-GW) and a packet data network (PDN) gateway (P-GW).
  • MME hosts the functions, such as non-access stratum (NAS) security, idle state mobility handling, evolved packet system (EPS) bearer control, etc.
  • NAS non-access stratum
  • EPS evolved packet system
  • the S-GW hosts the functions, such as mobility anchoring, etc.
  • the S-GW is a gateway having an E-UTRAN as an endpoint.
  • MME/S-GW 30 will be referred to herein simply as a "gateway," but it is understood that this entity includes both the MME and S-GW.
  • the P-GW hosts the functions, such as UE Internet protocol (IP) address allocation, packet filtering, etc.
  • IP Internet protocol
  • the P-GW is a gateway having a PDN as an endpoint.
  • the P-GW is connected to an external network.
  • the UE 10 is connected to the BS 20 by means of the Uu interface.
  • the UEs 10 are interconnected with each other by means of the PC5 interface.
  • the BSs 20 are interconnected with each other by means of the X2 interface.
  • the BSs 20 are also connected by means of the S1 interface to the EPC, more specifically to the MME by means of the S1-MME interface and to the S-GW by means of the S1-U interface.
  • the S1 interface supports a many-to-many relation between MMEs / S-GWs and BSs.
  • FIG. 2 shows another example of a wireless communication system to which technical features of the present invention can be applied.
  • FIG. 2 shows a system architecture based on a 5G new radio access technology (NR) system.
  • the entity used in the 5G NR system (hereinafter, simply referred to as "NR") may absorb some or all of the functions of the entities introduced in FIG. 1 (e.g. eNB, MME, S-GW).
  • the entity used in the NR system may be identified by the name "NG" for distinction from the LTE/LTE-A.
  • the wireless communication system includes one or more UE 11, a next-generation RAN (NG-RAN) and a 5th generation core network (5GC).
  • the NG-RAN consists of at least one NG-RAN node.
  • the NG-RAN node is an entity corresponding to the BS 10 shown in FIG. 1.
  • the NG-RAN node consists of at least one gNB 21 and/or at least one ng-eNB 22.
  • the gNB 21 provides NR user plane and control plane protocol terminations towards the UE 11.
  • the ng-eNB 22 provides E-UTRA user plane and control plane protocol terminations towards the UE 11.
  • the 5GC includes an access and mobility management function (AMF), a user plane function (UPF) and a session management function (SMF).
  • AMF hosts the functions, such as NAS security, idle state mobility handling, etc.
  • the AMF is an entity including the functions of the conventional MME.
  • the UPF hosts the functions, such as mobility anchoring, protocol data unit (PDU) handling.
  • PDU protocol data unit
  • the UPF an entity including the functions of the conventional S-GW.
  • the SMF hosts the functions, such as UE IP address allocation, PDU session control.
  • the gNBs and ng-eNBs are interconnected with each other by means of the Xn interface.
  • the gNBs and ng-eNBs are also connected by means of the NG interfaces to the 5GC, more specifically to the AMF by means of the NG-C interface and to the UPF by means of the NG-U interface.
  • layers of a radio interface protocol between the UE and the network may be classified into a first layer (L1), a second layer (L2), and a third layer (L3) based on the lower three layers of the open system interconnection (OSI) model that is well-known in the communication system.
  • OSI open system interconnection
  • FIG. 3 shows a block diagram of a user plane protocol stack to which technical features of the present invention can be applied.
  • FIG. 4 shows a block diagram of a control plane protocol stack to which technical features of the present invention can be applied.
  • the user/control plane protocol stacks shown in FIG. 3 and FIG. 4 are used in NR. However, user/control plane protocol stacks shown in FIG. 3 and FIG .4 may be used in LTE/LTE-A without loss of generality, by replacing gNB/AMF with eNB/MME.
  • the PHY layer offers information transfer services to media access control (MAC) sublayer and higher layers.
  • the PHY layer offers to the MAC sublayer transport channels. Data between the MAC sublayer and the PHY layer is transferred via the transport channels.
  • MAC media access control
  • the MAC sublayer belongs to L2.
  • the main services and functions of the MAC sublayer include mapping between logical channels and transport channels, multiplexing/de-multiplexing of MAC service data units (SDUs) belonging to one or different logical channels into/from transport blocks (TB) delivered to/from the physical layer on transport channels, scheduling information reporting, error correction through hybrid automatic repeat request (HARQ), priority handling between UEs by means of dynamic scheduling, priority handling between logical channels of one UE by means of logical channel prioritization (LCP), etc.
  • the MAC sublayer offers to the radio link control (RLC) sublayer logical channels.
  • RLC radio link control
  • the RLC sublayer belong to L2.
  • the RLC sublayer supports three transmission modes, i.e. transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM), in order to guarantee various quality of services (QoS) required by radio bearers.
  • TM transparent mode
  • UM unacknowledged mode
  • AM acknowledged mode
  • the main services and functions of the RLC sublayer depend on the transmission mode.
  • the RLC sublayer provides transfer of upper layer PDUs for all three modes, but provides error correction through ARQ for AM only.
  • LTE/LTE-A the RLC sublayer provides concatenation, segmentation and reassembly of RLC SDUs (only for UM and AM data transfer) and re-segmentation of RLC data PDUs (only for AM data transfer).
  • the RLC sublayer provides segmentation (only for AM and UM) and re-segmentation (only for AM) of RLC SDUs and reassembly of SDU (only for AM and UM). That is, the NR does not support concatenation of RLC SDUs.
  • the RLC sublayer offers to the packet data convergence protocol (PDCP) sublayer RLC channels.
  • PDCP packet data convergence protocol
  • the PDCP sublayer belong to L2.
  • the main services and functions of the PDCP sublayer for the user plane include header compression and decompression, transfer of user data, duplicate detection, PDCP PDU routing, retransmission of PDCP SDUs, ciphering and deciphering, etc.
  • the main services and functions of the PDCP sublayer for the control plane include ciphering and integrity protection, transfer of control plane data, etc.
  • the service data adaptation protocol (SDAP) sublayer belong to L2.
  • the SDAP sublayer is only defined in the user plane.
  • the SDAP sublayer is only defined for NR.
  • the main services and functions of SDAP include, mapping between a QoS flow and a data radio bearer (DRB), and marking QoS flow ID (QFI) in both DL and UL packets.
  • the SDAP sublayer offers to 5GC QoS flows.
  • a radio resource control (RRC) layer belongs to L3.
  • the RRC layer is only defined in the control plane.
  • the RRC layer controls radio resources between the UE and the network.
  • the RRC layer exchanges RRC messages between the UE and the BS.
  • the main services and functions of the RRC layer include broadcast of system information related to AS and NAS, paging, establishment, maintenance and release of an RRC connection between the UE and the network, security functions including key management, establishment, configuration, maintenance and release of radio bearers, mobility functions, QoS management functions, UE measurement reporting and control of the reporting, NAS message transfer to/from NAS from/to UE.
  • the RRC layer controls logical channels, transport channels, and physical channels in relation to the configuration, reconfiguration, and release of radio bearers.
  • a radio bearer refers to a logical path provided by L1 (PHY layer) and L2 (MAC/RLC/PDCP/SDAP sublayer) for data transmission between a UE and a network.
  • Setting the radio bearer means defining the characteristics of the radio protocol layer and the channel for providing a specific service, and setting each specific parameter and operation method.
  • Radio bearer may be divided into signaling RB (SRB) and data RB (DRB).
  • SRB signaling RB
  • DRB data RB
  • An RRC state indicates whether an RRC layer of the UE is logically connected to an RRC layer of the E-UTRAN.
  • RRC_CONNECTED when the RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC connected state (RRC_CONNECTED). Otherwise, the UE is in the RRC idle state (RRC_IDLE).
  • RRC_INACTIVE is additionally introduced.
  • RRC_INACTIVE may be used for various purposes. For example, the massive machine type communications (MMTC) UEs can be efficiently managed in RRC_INACTIVE. When a specific condition is satisfied, transition is made from one of the above three states to the other.
  • a predetermined operation may be performed according to the RRC state.
  • RRC_IDLE public land mobile network (PLMN) selection, broadcast of system information (SI), cell re-selection mobility, core network (CN) paging and discontinuous reception (DRX) configured by NAS may be performed.
  • PLMN public land mobile network
  • SI system information
  • CN core network
  • DRX discontinuous reception
  • the UE shall have been allocated an identifier (ID) which uniquely identifies the UE in a tracking area. No RRC context stored in the base station.
  • the UE has an RRC connection with the network (i.e. E-UTRAN/NG-RAN).
  • Network-CN connection (both C/U-planes) is also established for UE.
  • the UE AS context is stored in the network and the UE.
  • the RAN knows the cell which the UE belongs to.
  • the network can transmit and/or receive data to/from UE.
  • Network controlled mobility including measurement is also performed.
  • RRC_IDLE Most of operations performed in RRC_IDLE may be performed in RRC_INACTIVE. But, instead of CN paging in RRC_IDLE, RAN paging is performed in RRC_INACTIVE. In other words, in RRC_IDLE, paging for mobile terminated (MT) data is initiated by core network and paging area is managed by core network. In RRC_INACTIVE, paging is initiated by NG-RAN, and RAN-based notification area (RNA) is managed by NG-RAN. Further, instead of DRX for CN paging configured by NAS in RRC_IDLE, DRX for RAN paging is configured by NG-RAN in RRC_INACTIVE.
  • DRX for CN paging configured by NAS in RRC_IDLE
  • DRX for RAN paging is configured by NG-RAN in RRC_INACTIVE.
  • 5GC-NG-RAN connection (both C/U-planes) is established for UE, and the UE AS context is stored in NG-RAN and the UE.
  • NG-RAN knows the RNA which the UE belongs to.
  • the NAS layer is located at the top of the RRC layer.
  • the NAS control protocol performs the functions, such as authentication, mobility management, security control.
  • the physical channels may be modulated according to OFDM processing and utilizes time and frequency as radio resources.
  • the physical channels consist of a plurality of orthogonal frequency division multiplexing (OFDM) symbols in time domain and a plurality of subcarriers in frequency domain.
  • One subframe consists of a plurality of OFDM symbols in the time domain.
  • a resource block is a resource allocation unit, and consists of a plurality of OFDM symbols and a plurality of subcarriers.
  • each subframe may use specific subcarriers of specific OFDM symbols (e.g. first OFDM symbol) of the corresponding subframe for a physical downlink control channel (PDCCH), i.e. L1/L2 control channel.
  • a transmission time interval (TTI) is a basic unit of time used by a scheduler for resource allocation. The TTI may be defined in units of one or a plurality of slots, or may be defined in units of mini-slots.
  • DL transport channels include a broadcast channel (BCH) used for transmitting system information, a downlink shared channel (DL-SCH) used for transmitting user traffic or control signals, and a paging channel (PCH) used for paging a UE.
  • DL transport channels include an uplink shared channel (UL-SCH) for transmitting user traffic or control signals and a random access channel (RACH) normally used for initial access to a cell.
  • BCH broadcast channel
  • DL-SCH downlink shared channel
  • PCH paging channel
  • UL transport channels include an uplink shared channel (UL-SCH) for transmitting user traffic or control signals and a random access channel (RACH) normally used for initial access to a cell.
  • RACH random access channel
  • Each logical channel type is defined by what type of information is transferred.
  • Logical channels are classified into two groups: control channels and traffic channels.
  • Control channels are used for the transfer of control plane information only.
  • the control channels include a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH) and a dedicated control channel (DCCH).
  • BCCH is a DL channel for broadcasting system control information.
  • PCCH is DL channel that transfers paging information, system information change notifications.
  • the CCCH is a channel for transmitting control information between UEs and network. This channel is used for UEs having no RRC connection with the network.
  • the DCCH is a point-to-point bi-directional channel that transmits dedicated control information between a UE and the network. This channel is used by UEs having an RRC connection.
  • Traffic channels are used for the transfer of user plane information only.
  • the traffic channels include a dedicated traffic channel (DTCH).
  • DTCH is a point-to-point channel, dedicated to one UE, for the transfer of user information.
  • the DTCH can exist in both UL and DL.
  • BCCH in DL, BCCH can be mapped to BCH, BCCH can be mapped to DL-SCH, PCCH can be mapped to PCH, CCCH can be mapped to DL-SCH, DCCH can be mapped to DL-SCH, and DTCH can be mapped to DL-SCH.
  • CCCH can be mapped to UL-SCH
  • DCCH can be mapped to UL-SCH
  • DTCH can be mapped to UL-SCH.
  • Fig. 5 shows UE capability transfer procedure. The purpose of this procedure is to transfer UE radio access capability information from the UE to E-UTRAN.
  • the UE shall request higher layers to initiate the necessary NAS procedures that would result in the update of UE radio access capabilities using a new RRC connection.
  • Change of the UE's GERAN UE radio capabilities in RRC_IDLE is supported by use of Tracking Area Update.
  • E-UTRAN initiates the procedure to a UE in RRC_CONNECTED when it needs (additional) UE radio access capability information.
  • E-TURAN may send UECapabilityEnquiry message to a UE.
  • the UE may send UECapabilityInformation message to the E-UTRAN, in response to the UECapabilityEnquiry message.
  • the UE capability has become large enough now on LTE. On cell edges, it is causing delays in the Attach procedure and delaying the voice camping triggering IRAT transitions. A way is needed to reducing the size of the UE capabilities reporting. For example, the UE does not need to report UE capability that is not preferred by a network. Also, the UE does not need to report UE capability that is already reported to the network.
  • UE when base station of network e.g. gNB or eNB enquires UE capability and if the enquiry message for UE capability (update) information includes requested data rate information, UE may set a list of supported frequency bands and its processing parameters based on the requested data rate information. That is, the network may transmit enquiry message for information on UE capability which includes requested data rate information. Then, the UE may transmit list of supported frequency bands and its processing parameters related to the requested data rate information to the network.
  • the supported frequency band may be the set of basebands to provide supported Carrier Aggregation (CA) band combination and non-CA bands information.
  • CA Carrier Aggregation
  • the processing parameters of the supported frequency band may include modulation scheme, soft buffer, MIMO layers etc.
  • the requested data rate information may include the maximum allowed data rate information in the current base station.
  • AMBR Aggregated Maximum Bit Rate
  • GBR Guard Bit Rate
  • allowed peak data rate are available to be used for the requested data rate information.
  • the UE may include supported frequency bands and its processing parameters if the possible data rate of the supported band does not exceed the requested data rate information. If the UE, at the previous base stations, had already reported UE capability with the requested data rate information which is lower number than the current requested data rate information for the current base station, the UE may report only new UE capability information such as supported CA band combinations and non-CA bands which are not reported to the previous base station i.e. delta capability information from the previous reporting.
  • the network is available to enquiry UE capability (update) information with frequency band information request. If the network requests both frequency band information and data rate information in the enquiry message for UE capability (update) information, the UE may include supported frequency bands and its processing parameters only if the possible data rate of the supported band does not exceed the requested data rate information within the supported band is requested.
  • the base station of network e.g. gNB or eNB enquire UE capability and the enquiry message for UE capability (update) information includes requested data rate information for other RAT.
  • the UE may include other RAT's supported frequency bands and its processing parameters only if the possible data rate of the supported band does not exceed the requested data rate information in other RAT.
  • FIG. 6 shows an example of a method for reporting UE capability according to an embodiment of the present invention.
  • the method for a terminal i.e. User Equipment
  • the method for a terminal may comprise the following steps:
  • the UE may receive an enquiry of UE capability information i.e. UECapabilityEnquiry message from the network.
  • the UECapabilityEnquiry message may include requested conditions which are related to UE capability.
  • the requested condition may include a list of capability information for which UE is requested to provide supported information.
  • the requested conditions may be optionally set by frequency bands or data rate information.
  • the frequency bands may be requestedFrequencyBands, and the data rate information may be at least one of AMBR, GBR or allowed peak data rate.
  • the data rate information may be referred as requested data rate.
  • the requested frequency band may be B1, B3 and B5.
  • the requested data rate may be 50Mbps.
  • Step S604 The UE may check whether requested conditions are included in the UECapabilityEnquiry message. If UE receives any requested condition in the UECapabilityEnquiry message, the UE may construct UE capability reporting message i.e. UECapabilityInformation following the requested conditions.
  • UE may set a list of frequency bands for which is requested to provide supported CA band combinations and non-CA bands.
  • the requested frequency band may be B1, B3 and B5.
  • the UE may set a list of frequency bands to provide supported CA band combinations and non-CA bands following the requested data rate information.
  • the UE may exclude supported CA band combinations and non-CA bands if the possible data rate of the supported band exceeds the requested data rate information.
  • the UE may exclude supported CA band combinations and non-CA bands if UE had already reported a list of frequency bands to provide supported CA band combinations and non-CA bands even though the possible data rate of the supported band doesn't exceed the requested data rate information.
  • the UE may include supported CA band combinations and non-CA bands if the possible data rate of the supported band doesn't exceed the current requested data rate information even though UE had already excluded the supported CA band combinations and non-CA bands at previous reporting with the previous requested data rate information e.g. requested data rate becomes higher than previous condition.
  • the UE may set a list of frequency bands for which is requested to provide supported CA band combinations and non-CA bands following the requested data rate information.
  • the UE may exclude supported CA band combinations and non-CA bands if the possible data rate of the supported band exceeds the requested data rate information and the supported band is not requested.
  • the UE may exclude supported CA band combinations and non-CA bands if the UE had already reported a list of frequency bands to provide supported CA band combinations and non-CA bands even though the possible data rate of the supported band doesn't exceed the requested data rate information within the supported band requested.
  • the UE may include supported CA band combinations and non-CA bands if the possible data rate of the supported band doesn't exceed the current requested data rate information within the supported band requested even though UE had already excluded the supported CA band combinations and non-CA bands at previous reporting with the previous requested data rate and the previous requested frequency band information e.g. requested data rate becomes higher than previous condition.
  • the requested data rate may be a limitation of data rate allowed for the UE, and the requested data rate is not a minimum data rate requested for the UE.
  • the UE may report UE capability which is under the requested data rate.
  • the requested data rate is 50Mbps
  • the supported band B1, B3 are supported under 50Mbps
  • B5 is not supported under 50Mbps
  • the supported band combination B1-B3, B3-B1 are supported under 50Mbps.
  • the UE may set the UE capability reporting message to include supported band list e.g. B1, B3 and supported band combinations e.g. B1-B3, B3-B1.
  • Step S606 the UE may send UE capability reporting message to the network.
  • the UE may receive an enquiry of UE capability update information i.e. UECapabilityEnquiry message from the network.
  • the UECapabilityEnquiry message may include requested conditions which are changed compared to the previously provided conditions.
  • the requested frequency bands may be B1, B3 and B5, and the requested data rate may be 100Mbps.
  • the requested data rate is changed from 50Mbps to 100Mbps.
  • the UE may construct UE capability reporting message i.e. UECapabilityInformation based on the requested conditions.
  • the B5 is now supported over 50Mbps and under100Mbps.
  • the UE may set the UE capability reporting message to include supported band B5.
  • the UE does not need to set the UE capability reporting message to include B1 and B3, because the UE already reported the band list B1, B3 in step S 604.
  • the UE may exclude the band combination B3-B1 for the UE capability reporting message.
  • Step S612 the UE may send UE capability reporting message to the network.
  • the UE may reduce the size of UE capability information message by preventing from reporting UE capability that is not preferred by a network, or reporting UE capability that is already reported to the network. For that, the UE may generate the UE capability information message to only include supported CA band combinations and non-CA bands which does not exceed the requested data rate information. Further, the UE may generate the UE capability information message to exclude supported CA band combinations and non-CA bands which is already reported to the network.
  • FIG. 7 shows an example of a method for reporting UE capability according to an embodiment of the present invention.
  • a network may be a base station, such as eNB or gNB.
  • the UE capability reporting message may be referred as UE capability information message hereinafter.
  • the UE may receive an enquiry message of a UE capability information message, wherein the enquiry message includes information on a data rate requested by the network, from a network.
  • the enquiry message may be referred as UECapabilityEnquiry message.
  • the data rate requested by the network may be at least one of AMBR (aggregated maximum bit rate), GBR (guaranteed bit rate) or allowed peak data rate.
  • the enquiry message of the UE capability information message may include candidate band and/or band combination configured by the network.
  • the enquiry message of the UE capability information message may include band processing parameter.
  • the band processing parameter may include at least one of modulation scheme, soft buffer or MIMO (multiple-input multiple-output) layers.
  • the UE may generate the UE capability information message which only includes information on band and/or band combination supported under the data rate.
  • the band combination may be CA (carrier aggregation) band combination and non-CA band combination.
  • the UE may generate the UE capability information message to include the band and/or band combination selected among the candidate band and/or band combination.
  • the UE may generate the UE capability information message to exclude band and/or band combination which is already reported to the network.
  • step S706 the UE may transmit the UE capability information message to the network.
  • the UE may reduce the size of UE capability information message by preventing from reporting UE capability that is not preferred by a network, or reporting UE capability that is already reported to the network. For that, the UE may generate the UE capability information message to only include supported CA band combinations and non-CA bands which does not exceed the requested data rate information. Further, the UE may generate the UE capability information message to exclude supported CA band combinations and non-CA bands which is already reported to the network.
  • FIG. 8 shows a structure of UE according to an embodiment of the present invention.
  • the UE 800 may comprise transceiver 802, processor 804 and memory 806.
  • the memory 806 is coupled to the processor 804, and stores a variety of information for driving the processor 804.
  • the transceiver 802 is coupled to the processor 804, and transmits and/or receives a radio signal.
  • the processor 804 implements the proposed functions, procedures, and/or methods. In the aforementioned embodiments, an operation of the first network node may be implemented by the processor 804.
  • the processors 804 may include application-specific integrated circuit (ASIC), other chipset, logic circuit and/or data processing device.
  • the memories may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and/or other storage device.
  • the transceivers may include baseband circuitry to process radio frequency signals.
  • the transceiver 802 may be configured to receive an enquiry message of a UE capability information message which includes information on a data rate requested by the network, from the network.
  • the enquiry message may be referred as UECapabilityEnquiry message.
  • the data rate requested by the network may be at least one of AMBR (aggregated maximum bit rate), GBR (guaranteed bit rate) or allowed peak data rate.
  • the enquiry message of the UE capability information message may include candidate band and/or band combination configured by the network.
  • the enquiry message of the UE capability information message may include band processing parameter.
  • the band processing parameter may include at least one of modulation scheme, soft buffer or MIMO (multiple-input multiple-output) layers.
  • the transceiver 802 may be configured to transmit the UE capability information message to the network.
  • the processor 804 may be configured to generate the UE capability information message which only includes information on band and/or band combination supported under the data rate.
  • the band combination may be CA (carrier aggregation) band combination and non-CA band combination.
  • the processor 804 may generate the UE capability information message to include band and/or band combination selected among the candidate band and/or band combination.
  • the processor 804 may generate the UE capability information message to exclude band and/or band combination which is already reported to the network.
  • the memory 806 may be configured to store previously transmitted UE capability information message, to avoid sending supported band list and/or band combination already sent.
  • the UE may reduce the size of UE capability information message by preventing from reporting UE capability that is not preferred by a network, or reporting UE capability that is already reported to the network. For that, the UE may generate the UE capability information message to only include supported CA band combinations and non-CA bands which does not exceed the requested data rate information. Further, the UE may generate the UE capability information message to exclude supported CA band combinations and non-CA bands which is already reported to the network.
  • FIG. 9 shows an example of a method for reporting UE capability according to an embodiment of the present invention.
  • the base station may be at least one of eNB or gNB.
  • the base station may be configured to transmit, to a user equipment (UE), an enquiry message of a UE capability information message.
  • the enquiry message may include information on the data rate configured by the BS.
  • the enquiry message may be referred as UECapabilityEnquiry message.
  • the data rate configured by the BS may be at least one of AMBR (aggregated maximum bit rate), GBR (guaranteed bit rate) or allowed peak data rate.
  • the enquiry message of the UE capability information message may include candidate band and/or band combination configured by the network.
  • the enquiry message of the UE capability information message may include band processing parameter.
  • the band processing parameter may include at least one of modulation scheme, soft buffer or MIMO (multiple-input multiple-output) layers.
  • the base station may be configured to receive, from the UE, the UE capability information message which only includes information on band and/or band combination supported under the data rate.
  • the band combination may be CA (carrier aggregation) band combination and non-CA band combination.
  • the UE capability information message may include band and/or band combination selected among the candidate band and/or band combination.
  • the UE capability information message may exclude band and/or band combination which is already reported to the network.
  • the UE may reduce the size of UE capability information message by preventing from reporting UE capability that is not preferred by a network, or reporting UE capability that is already reported to the network. For that, the UE may generate the UE capability information message to only include supported CA band combinations and non-CA bands which does not exceed the requested data rate information. Further, the UE may generate the UE capability information message to exclude supported CA band combinations and non-CA bands which is already reported to the network.
  • FIG. 10 shows a structure of network according to an embodiment of the present invention.
  • the base station may be at least one of eNB or gNB.
  • the network 1000 may comprise transceiver 1002, processor 1004 and memory 1006.
  • the memory 1006 is coupled to the processor 1004, and stores a variety of information for driving the processor 1004.
  • the transceiver 1002 is coupled to the processor 1004, and transmits and/or receives a radio signal.
  • the processor 1004 implements the proposed functions, procedures, and/or methods. In the aforementioned embodiments, an operation of the first network node may be implemented by the processor 1004.
  • the processors 1004 may include application-specific integrated circuit (ASIC), other chipset, logic circuit and/or data processing device.
  • the memories may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and/or other storage device.
  • the transceivers may include baseband circuitry to process radio frequency signals.
  • the transceiver 1002 may be configured to transmit an enquiry message of a UE capability information message, wherein the enquiry message includes information on the data rate configured by the BS, to a user equipment (UE).
  • the enquiry message may be referred as UECapabilityEnquiry message.
  • the data rate configured by the BS may be at least one of AMBR (aggregated maximum bit rate), GBR (guaranteed bit rate) or allowed peak data rate.
  • the enquiry message of the UE capability information message may include candidate band and/or band combination configured by the network.
  • the enquiry message of the UE capability information message may include band processing parameter.
  • the band processing parameter may include at least one of modulation scheme, soft buffer or MIMO (multiple-input multiple-output) layers.
  • the transceiver 1002 may be configured to receive the UE capability information message which only includes information on band and/or band combination supported under the data rate, from the UE.
  • the band combination may be CA (carrier aggregation) band combination and non-CA band combination.
  • the UE capability information message may include band and/or band combination selected among the candidate band and/or band combination.
  • the UE capability information message may exclude band and/or band combination which is already reported to the network.
  • the UE may reduce the size of UE capability information message by preventing from reporting UE capability that is not preferred by a network, or reporting UE capability that is already reported to the network. For that, the UE may generate the UE capability information message to only include supported CA band combinations and non-CA bands which does not exceed the requested data rate information. Further, the UE may generate the UE capability information message to exclude supported CA band combinations and non-CA bands which is already reported to the network.

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

Abstract

La présente invention concerne un procédé de rapport de capacité d'UE et un dispositif prenant en charge le procédé. Selon un mode de réalisation de la présente invention, un procédé comprend : la réception, en provenance d'un réseau, d'un message de demande d'un message d'informations de capacité d'UE, le message de demande comprenant des informations sur un débit de données demandé par le réseau ; la génération du message d'informations de capacité d'UE qui comprend uniquement des informations sur une bande et/ou une combinaison de bandes prises en charge sous le débit de données ; et la transmission du message d'informations de capacité d'UE au réseau.
PCT/KR2018/011520 2017-09-28 2018-09-28 Procédé de rapport de capacité d'ue et dispositif prenant en charge le procédé WO2019066547A1 (fr)

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WO2022010135A1 (fr) * 2020-07-07 2022-01-13 삼성전자 주식회사 Procédé et dispositif pour fournir des informations de capacité de terminal dans un système de communication sans fil
GB2608222A (en) * 2021-03-24 2022-12-28 Samsung Electronics Co Ltd Improvements in and relating to dual connectivity in a telecommunication network
WO2023179468A1 (fr) * 2022-03-21 2023-09-28 上海朗帛通信技术有限公司 Procédé et appareil utilisés pour des communications sans fil

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CN113473534A (zh) * 2020-03-30 2021-10-01 华为技术有限公司 无线接入能力的上报方法、装置及系统
WO2021196947A1 (fr) * 2020-03-30 2021-10-07 华为技术有限公司 Procédé, appareil et système de rapport de capacité d'accès sans fil
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WO2022010135A1 (fr) * 2020-07-07 2022-01-13 삼성전자 주식회사 Procédé et dispositif pour fournir des informations de capacité de terminal dans un système de communication sans fil
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