WO2024038768A1

WO2024038768A1 - Terminal

Info

Publication number: WO2024038768A1
Application number: PCT/JP2023/028386
Authority: WO
Inventors: 天楊閔
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2022-08-18
Filing date: 2023-08-03
Publication date: 2024-02-22

Abstract

Provided is a terminal that can achieve power saving in an interactive service. The terminal comprises: a control unit that sets a plurality of groups which contain downlink discontinuous reception-related parameters and uplink data transmitted between the terminal and a base station in a specific period; and a reception unit that receives, from the base station, information for putting the groups in an active state or a non-active state.

Description

terminal

The present disclosure relates to a terminal compatible with interactive services.

3rd Generation Partnership Project (3GPP: registered trademark) is a 5th generation mobile communication system (5G, New Radio (NR) or Next Generation (NG)), and furthermore, the Next Generation (NG), called Beyond 5G, 5G Evolution, or 6G. Generation specifications are also being developed.

Currently, research is underway on XR (Extended Reality) services that can be realized using NR networks and the like (for example, Non-Patent Document 1). XR refers to a composite environment of reality and virtuality generated by a computer.

In the XR service, there is a transmission period in which only DL data such as video traffic is transmitted from the base station to the terminal, and a transmission period in which DL and UL data is transmitted between the terminal and the base station (interactive service period). exist. In the interactive service period, the frequency of occurrence of UL data may increase, so power saving of the terminal is required. Also, low latency (low delay) of UL data is required.

In this way, in order to achieve power saving and low latency in XR services, parameters related to the interactive service period settings (DRX config, ConfiguredGrantConfig, SPS config, etc.) must be set appropriately in the wireless network (base station, etc.). It is important to set the timing.

On the other hand, in XR services, it has been proposed that multiple DRX config settings are necessary in order to process multiple flows with different traffic patterns (for example, Non-Patent Document 2). Multiple flows with different traffic patterns may be interpreted as a characteristic of XR traffic. Furthermore, in the XR service, a proposal has been made to switch a plurality of parameters set in DRX config using L1/L2 signaling (for example, Non-Patent Document 3).

Here, setting multiple DRX config means that multiple DRX groups (DRX group1, DRX group2, DRX group3, etc.) are set. However, the conventional technology does not specify how to change the DRX configuration set in multiple DRX groups. Therefore, there is a possibility that power saving cannot be achieved in a terminal that uses the XR service.

Therefore, the following disclosure has been made in view of this situation, and aims to provide a terminal that can realize power saving in interactive services.

One aspect of the present disclosure provides a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted in a specific period between a terminal and a base station, and sets the groups to an active state. or a receiving unit that receives information for inactivating the base station from the base station.

One aspect of the present disclosure provides a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted in a specific period between a terminal and a base station; a receiving unit that receives from the base station, using a media access control control element, a signal for switching parameters for each group, or a signal indicating that the parameters included in a plurality of groups are to be switched all at once. It is a terminal.

One aspect of the present disclosure provides a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception that are transmitted in a specific period between a terminal and a base station, and a control unit that is used in the terminal. a transmitter that transmits to the base station, by a media access control control element, a signal requesting the parameters for each group, or a signal requesting the parameters of a plurality of groups used by the terminal all at once; A terminal equipped with .

FIG. 1 is an overall schematic configuration diagram of a wireless communication system 10 according to this embodiment. FIG. 2 is a functional block configuration diagram of the gNB 100 and the UE 200. FIG. 3 is a functional block configuration diagram of the AMF 50. FIG. 4 is a diagram for explaining mapping between DRX groups and serving cells. FIG. 5 is a diagram for explaining a method for activating or deactivating a DRX group. FIG. 6 is a diagram for explaining mapping between DRX groups and serving cells. FIG. 7 is a diagram for explaining a method of switching parameters set in a DRX group. FIG. 8 is a diagram for explaining a method of switching parameters set in a DRX group. FIG. 9 is a diagram for explaining a method of selecting a DRX cycle. FIG. 10 is a diagram for explaining how to set DRX cycle and drx-InactivityTimer. FIG. 11 is a diagram for explaining how to set DRX cycle and drx-InactivityTimer. FIG. 12 is a diagram showing an example of the DRX cycle. FIG. 13 is a diagram showing an example of the DRX cycle. FIG. 14 is a diagram showing an example of the hardware configuration of the gNB 100, the UE 200, and the AMF 50. FIG. 15 is a diagram showing a configuration example of vehicle 2001.

Hereinafter, embodiments will be described based on the drawings. Note that the same functions and configurations are given the same or similar symbols, and the description thereof will be omitted as appropriate.

[Embodiment]
(1) Overall schematic configuration of wireless communication system 10 FIG. 1 is an overall schematic configuration diagram of wireless communication system 10 according to the present embodiment. The wireless communication system 10 is a wireless communication system compliant with 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter referred to as NG-RAN 20) and a head-mounted terminal 200.

The head-mounted terminal 200 is an example of an information terminal that is attached to the user's head so as to cover the user's eyes. The head-mounted terminal 200 is also an example of an information terminal that supports interactive services such as XR services.

The head-mounted terminal 200 may be interpreted as an information terminal capable of transmitting and receiving DL data and UL data (DL and UL data) transmitted during a specific period between the head-mounted terminal 200 and the wireless base station 100. good. The head-mounted terminal 200 may be expressed as a "UE (User Equipment) 200" or simply as a "terminal 200."

In addition to the head-mounted information terminal, the UE 200 may include wearable information terminals such as a watch-type, goggle-type, bracelet-type, and necklace-type. Further, the UE 200 may include an information terminal such as a mobile phone, a portable game machine, a portable information terminal, or an electronic book terminal. The portable information terminal may include a smartphone, a tablet information terminal, and the like.

The interactive service may be interpreted as a CG (Cloud Gaming) service in which information is distributed interactively. The CG service is a service in which operation data indicating the operation of the UE 200 is sent to a specific server, various game processes are executed in the server, and the execution results are streamed to the UE 200 as video and audio.

Note that the interactive service may be interpreted as a service in which information is distributed interactively, and may include, for example, the following services in addition to the XR (Extended Reality) service. For example, in addition to CG services, interactive services to which the invention of the present disclosure is applied include services that display comments, etc. input by viewers (UE200 users) of content distributed from a network, superimposed on the content; This may include services that allow users to experience the experience of participating in content distribution.

Additionally, the interactive service may be interpreted as a traffic model of DL and UL data for applications such as VR (Virtual Reality) and AR (Augmented Reality).

Note that the wireless communication system 10 may be a wireless communication system that follows a system called Beyond 5G, 5G Evolution, or 6G.

The NG-RAN 20 includes a wireless base station 100 (hereinafter referred to as gNB 100). Note that the specific configuration of the wireless communication system 10 including the number of gNBs 100 and UEs 200 is not limited to the example shown in FIG. 1.

The NG-RAN 20 actually includes multiple NG-RAN Nodes, specifically gNB 100 (or ng-eNB), and is connected to a 5G-compliant core network 40 (which may also be referred to as 5GC). . The NG-RAN 20 is connected to an Access and Mobility Management Function 50 (AMF 50) that is included in the 5G system architecture and provides access and mobility management functions for the UE 200. Further, network elements other than the wireless communication system 10 (for example, a private network (NPN: Non-Public Network), etc.) may be connected to the core network 40.

The gNB 100 is a radio base station that complies with the NR, and performs radio communication with the UE 200 in accordance with the NR. Note that the gNB 100 may be configured with a CU (Central Unit) and a DU (Distributed Unit), and the DU may be separated from the CU and installed at a geographically different location.

The gNB 100 and the UE 200 perform Massive MIMO, which generates a more highly directional beam by controlling radio signals transmitted from multiple antenna elements, Carrier Aggregation (CA), which uses multiple component carriers (CC) in a bundle; Also, it is possible to support dual connectivity (DC) in which communication is performed simultaneously between the UE 200 and each of a plurality of NG-RAN nodes.

In the wireless communication system 10, a Neighbor Relationship Table (NRT) and a Neighbor Cell R (NCRT) are applied to handover (HO) of the UE 200 to another cell and manage identification information (CGI: Cell Global Identifier) of neighboring cells. elation Table) and ) may be used. The contents of the NRT may be manually set in advance, but an ANR (Automatic Neighbor Relation) function that automatically associates neighboring cell information (CGI) may be introduced.

(2) Functional block configuration of wireless communication system Next, the functional block configuration of the wireless communication system 10 will be described. Specifically, the functional block configurations of the gNB 100 and the UE 200 will be described.

FIG. 2 is a functional block configuration diagram of the gNB 100 and the UE 200. FIG. 3 is a functional block configuration diagram of the AMF 50. Note that in FIGS. 2 and 3, only main functional blocks related to the description of the embodiments are shown, and the gNB 100, UE 200, and AMF 50 have other functional blocks (for example, a power supply unit, etc.). I want to be Further, FIGS. 2 and 3 show functional block configurations of the gNB 100, UE 200, and AMF 50, and please refer to FIG. 14 for the hardware configuration of these devices.

(2.1) UE200, gNB100
The radio signal transmitting/receiving unit 210 of the UE 200 (gNB 100) transmits and receives radio signals according to NR. The radio signal transmitting/receiving unit 210 uses Massive MIMO, which generates a highly directional beam by controlling radio (RF) signals transmitted from a plurality of antenna elements, and a carrier that uses a plurality of component carriers (CC) in a bundle. It is possible to support aggregation (CA), dual connectivity (DC) in which communication is performed simultaneously between the UE 200 and each of two NG-RAN nodes, and the like.

The amplifier unit 220 of the UE 200 (gNB 100) is configured by a PA (Power Amplifier)/LNA (Low Noise Amplifier), etc. The amplifier section 220 amplifies the signal output from the modulation/demodulation section 230 to a specific power level. Furthermore, the amplifier section 220 amplifies the RF signal output from the radio signal transmitting/receiving section 210.

The modulation/demodulation unit 230 of the UE 200 (gNB 100) performs data modulation/demodulation, transmission power setting, resource block allocation, etc. for each specific communication destination (gNB 100, etc.). The modulation/demodulation section 230 performs Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread ( DFT-S-OFDM) may be applied. Furthermore, DFT-S-OFDM may be used not only for uplink (UL) but also for downlink (DL).

The control signal/reference signal processing unit 240 of the UE 200 executes processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and received by the UE 200. The control signal/reference signal processing unit 240 of the gNB 100 executes processing related to various control signals transmitted and received by the gNB 100 and processing related to various reference signals transmitted and received by the gNB 100.

The control signal/reference signal processing unit 240 of the UE 200 (gNB 100) uses reference signals (RS) such as Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS). Execute the specified processing.

DMRS is a reference signal (pilot signal) known between a terminal-specific base station and the terminal for estimating a fading channel used for data demodulation. PTRS is a terminal-specific reference signal for the purpose of estimating phase noise, which is a problem in high frequency bands.

In addition to DMRS and PTRS, reference signals include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Posit for location information. ioning Reference Signal (PRS) may be included.

Additionally, the channels include a control channel and a data channel. The control channels include PDCCH, PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel), and Random Access Radio Network. Downlink Control Information (DCI) including Temporary Identifier (RA-RNTI), Physical Broadcast Channel (PBCH), etc. may be included.

Further, data channels include PDSCH, PUSCH (Physical Uplink Shared Channel), and the like. Data may refer to data transmitted over a data channel.

In the present embodiment, the control signal/reference signal processing unit 240 of the UE 200 processes parameters related to uplink data and downlink discontinuous reception (DRX) transmitted during a specific period between the terminal and the base station. A control unit may be configured to set a plurality of groups including the following.

Parameters related to discontinuous reception may include the following parameters.

・drx-onDurationTimer (see Figures 12 and 13)
・drx-SlotOffset
・drx-InactivityTimer (see Figures 12 and 13)
・drx-RetransmissionTimerDL
・drx-RetransmissionTimerUL
・drx-LongCycleStartOffset
・drx-ShortCycle (see Figures 12 and 13)
・drx-ShortCycleTimer
・drx-HARQ-RTT-TimerDL
・drx-HARQ-RTT-TimerUL
・drx-RetransmissionTimerSL
・drx-HARQ-RTT-TimerSL
drx-onDurationTimer may be interpreted as the duration at the beginning of the DRX cycle.

drx-SlotOffset may be interpreted as the delay time before starting drx-onDurationTimer.

drx-InactivityTimer may be interpreted as the duration of a PDCCH occasion in which the PDCCH indicates a new UL (uplink) transmission or DL (downlink) transmission of the MAC entity.

drx-RetransmissionTimerDL may be interpreted as the maximum duration time until receiving DL (downlink) retransmission. drx-RetransmissionTimerDL may be interpreted as the maximum duration until receiving a DL (downlink) retransmission for each DL HARQ (Hybrid Automatic Repeat Request) process, excluding broadcast processes.

drx-RetransmissionTimerUL may be interpreted as the maximum duration time until receiving a grant for UL retransmission for each UL HARQ process.

drx-LongCycleStartOffset may be interpreted as drx-StartOffset that defines the Long DRX cycle and the subframe in which the Long DRX cycle and the Short DRX cycle are started.

drx-ShortCycle (optional) may be interpreted as Short DRX cycle.

drx-ShortCycleTimer (optional) may be interpreted as the time during which the UE continues the Short DRX cycle.

drx-HARQ-RTT-TimerDL may be interpreted as the minimum period until DL allocation for HARQ retransmission is expected by the MAC entity. drx-HARQ-RTT-TimerDL may be interpreted as the minimum period until a DL allocation for HARQ retransmissions is expected by the MAC entity for each DL HARQ process, excluding broadcast processes.

drx-HARQ-RTT-TimerUL may be interpreted as the minimum time before a UL HARQ retransmission is expected to be granted by the MAC entity for each UL HARQ process.

drx-RetransmissionTimerSL may be interpreted as the maximum duration until receiving a grant for SL retransmission for each SL (side link) HARQ process.

drx-HARQ-RTT-TimerSL may be interpreted as the minimum duration before an SL retransmission grant is expected by the MAC entity for each SL HARQ process.

Note that a specific example of a group including parameters related to discontinuous reception will be described later.

In the present embodiment, the control signal/reference signal processing unit 240 of the UE 200 may constitute a control unit that performs mapping between the group and the serving cell of the terminal using a radio resource control layer (RRC).

The encoding/decoding unit 250 of the UE 200 (gNB 100) performs data division/concatenation, channel coding/decoding, etc. for each specific communication destination (gNB 100 or other gNB).

Specifically, the encoding/decoding unit 250 divides the data output from the data transmitting/receiving unit 260 into predetermined sizes, and performs channel coding on the divided data. Furthermore, the encoding/decoding section 250 decodes the data output from the modulation/demodulation section 230 and concatenates the decoded data.

The data transmission/reception unit 260 of the UE 200 (gNB 100) executes transmission and reception of Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transmitting/receiving unit 260 transmits PDUs/SDUs in multiple layers (such as a medium access control layer (MAC), a radio link control layer (RLC), and a packet data convergence protocol layer (PDCP)). Assemble/disassemble etc. Further, the data transmitter/receiver 260 performs data error correction and retransmission control based on hybrid ARQ (Hybrid automatic repeat request).

In this embodiment, the data transmitting/receiving unit 260 may constitute a receiving unit that receives information for setting the group into an active state or an inactive state from the base station.

In this embodiment, the data transmitting/receiving unit 260 transmits a signal indicating that parameters included in the group are to be switched for each group, or a signal indicating that the parameters included in a plurality of groups are to be switched all at once, for media access control. The control element may configure a receiving section that receives data from the base station.

In the present embodiment, the data transmitting/receiving unit 260 sends a signal requesting the parameters to be used in the terminal for each group, or a signal requesting the parameters of a plurality of groups to be used in the terminal all at once to the media. A transmitter that transmits to the base station may be configured by an access control control element.

The control unit 270 controls each functional block that configures the UE 200.

(2.2) AMF50
As shown in FIG. 3, the AMF 50 includes a communication section 51, a transmission section 52, and a control section 53.

The communication unit 51 transmits signals to the gNB 100 and receives signals transmitted from the gNB 100.

The control unit 53 controls each functional block that constitutes the AMF 50.

(3) Operation of the wireless communication system Next, the operation of the wireless communication system 10 will be explained. Specifically, an example of the operation of the wireless communication system 10 that can realize power saving in an interactive service will be described.

(3.1) Assumptions and Issues With reference to FIGS. 5 and 6, issues in realizing power saving in the DRX configuration set in multiple DRX groups and the interactive service used will be explained.

On the other hand, in XR services, it has been proposed that multiple DRX config settings are necessary in order to process multiple flows with different traffic patterns (for example, the aforementioned Non-Patent Document 2). Multiple flows with different traffic patterns may be interpreted as a characteristic of XR traffic. Furthermore, in the XR service, a proposal has been made to switch a plurality of parameters set in DRX config using L1/L2 signaling (for example, the above-mentioned Non-Patent Document 3).

Here, setting multiple DRX config means that multiple DRX groups (DRX group1, DRX group2, DRX group3, etc.) are set. However, the conventional technology does not specify how to change the DRX configuration set in multiple DRX groups.

Specifically, the following multiple issues are envisaged.

First issue: In the conventional technology, when multiple DRX groups are set, it is not specified how to activate or deactivate the configuration of some of the multiple DRX groups. Furthermore, it is not specified how mapping or remapping between DRX groups and serving cells is performed.

Second issue: In the conventional technology, when multiple DRX groups are set and multiple DRX parameters (for example, drx-onDurationTimer, drx-InactivityTimer, drx-SlotOffset, etc.) are set for each DRX group, It is not specified how to switch between multiple DRX parameters.

Additionally, rel-17 TS 38.321 contains the following description regarding setting two DRX groups for a MAC entity. Serving Cells of a MAC entity may be configured by RRC in two DRX groups with separate DRX parameters. When RRC does not configure a secondary DRX group, there is only one DRX group and all Serving Cells belong to that one DRX group. When two DRX groups are configured, each Serving Cell is uniquely assigned to either of the two groups. The DRX parameters that are separately configured for each DRX group are: drx-onDurationTimer, drx-InactivityTimer. drx-SlotOffset, drx-RetransmissionTimerDL, drx-RetransmissionTimerUL, drx-LongCycleStartOffset, drx-ShortCycle (optional), drx-ShortCycleTimer (optional), drx-HARQ-RTT-TimerDL, drx-HARQ-RTT-TimerUL, and uplinkHARQ -Mode (optional).

Third issue: In the existing MAC (Medium Access Control Layer) specifications, when short DRX cycle and long DRX cycle are configured at the same time after drx-InactivityTimer expires, short DRX cycle is preferentially used. However, when DL data and/or UL data does not arrive at the UE, if the short DRX cycle is preferentially used, the UE will frequently enter the Active state, which may increase the power consumption of the UE.

Fourth challenge: By dynamically changing the DRX length (e.g. short DRX cycle, long DRX cycle, etc.) and ON/OFF of drx-InactivityTimer, etc., depending on the The power saving effect may be improved. However, RRCReconfiguration is required to change short DRX cycle, long DRX cycle, drx-InactivityTimer, etc. set in the existing DRX config, and changing these settings may take a long time. However, with the conventional technology, activation/deactivation of short DRX cycle, long DRX cycle, drx-InactivityTimer, etc. cannot be dynamically set.

Due to these issues, the conventional technology may not be able to realize power saving in terminals that use XR services.

As a solution to such problems, several operation examples shown below can be considered. Note that the plurality of operation examples described below may be used alone, or may be used in combination of two or more thereof.

(3.2) Operation example Below, an operation example that can solve the above problem will be explained.

(3.2.1) Operation example 1
An example of operation that can solve the first problem will be described below.

In operation example 1, the NW may activate/deactivate the DRX group for the UE using the MAC CE (control element for media access control). As shown in FIG. 5, when the field of DRX group(i) (i is a natural number of 1 or more) is set to 1, the DRX group becomes activated. If the DRX group(i) field is set to 0, the DRX group will be in a deactivated state. NW may be interpreted as gNB100 or AMF50.

When a DRX group is deactivated, the serving cell that was using that DRX group may use the configuration of the default DRX group (see Figure 4), or it may use the configuration of another DRX group (DRX group other than the default DRX group). configuration may also be used.

The gNB 100 and/or the UE 200 may perform mapping between DRX groups and serving cells using RRC. Specifically, as shown in FIG. 5, the gNB 100 and/or the UE 200 may perform mapping with corresponding serving cells for each DRX group using RRC. Furthermore, the gNB 100 and/or the UE 200 may perform mapping with a corresponding DRX group for each serving cell. The gNB 100 and/or the UE 200 may define one DRX group among multiple DRX groups as a default DRX group.

The gNB 100 and/or the UE 200 may perform (re)mapping between the serving cell and the DRX group using MAC CE. Specifically, the gNB 100 and/or the UE 200 may perform (re)mapping between the serving cell and the DRX group using the MAC CE in the format shown in FIG. The Serving cell ID field indicates the serving cell ID. The DRX group ID field indicates the DRX group ID used by the serving cell.

The NW may instruct the UE to (re)map the serving cell and DRX group using the MAC CE shown in FIG. 6.

The UE may request (re)mapping between the serving cell and the DRX group from the NW using the MAC CE shown in FIG. 6.

(3.2.2) Operation example 2
An example of operation that can solve the second problem will be described below.

The NW may switch multiple DRX parameters in the DRX configuration for each DRX group using the MAC CE for the UE.

The NW may switch the DRX parameters of multiple DRX groups all at once for the UE using the MAC CE.

The UE may transmit a request signal to the NW using the MAC CE to indicate which DRX parameter to use for each DRX group.

The UE may transmit a request signal to the NW, using the MAC CE, to request the DRX parameters set for multiple DRX groups all at once.

Specifically, the NW may switch the DRX parameter for the UE using the MAC CE in the format shown on the right side of FIG.

The UE may request the NW for the DRX parameters it wishes to use using the MAC CE.

In the relevant MAC CE, "R" indicates that this field is reserved.

In the relevant MAC CE, the DRX Group ID field indicates the DRX Group whose DRX parameters are to be changed.

In the MAC CE, the drx-OnDurationTimer field indicates the drx-OnDurationTimer switching value. For example, 0001 indicates value1 set in RRC. 0010 indicates value2.

In the MAC CE, the drx-InactivityTimer field indicates the drx-InactivityTimer switching value. For example, 0001 indicates value1 set in RRC. 0010 indicates value2.

In the relevant MAC CE, the drx-slotOffset field indicates the drx-slotOffset switching value. For example, 0001 indicates value1 set in RRC. 0010 indicates value2.

In the relevant MAC CE, the drx-shortCycleStartOffset field indicates the switching value of drx-shortCycleStartOffset. For example, 0001 indicates value1 set in RRC. 0010 indicates value2.

In the relevant MAC CE, the drx-longCycleStartOffset field indicates the switching value of drx-longCycleStartOffset. For example, 0001 indicates value1 set in RRC. 0010 indicates value2.

Note that on the left side of FIG. 7, multiple DRX parameter values may be set for each DRX group using RRC. After that, you can dynamically switch each parameter value using MAC CE.

When the NW changes the parameters of multiple DRX groups of the UE all at once, the DRX parameters may be switched using the MAC CE in the format shown in FIG.

If the UE wants to request parameter changes for multiple DRX groups all at once from the NW, the desired DRX parameters may be requested using the MAC CE in the format shown in FIG.

(3.2.3) Operation example 3
An example of operation that can solve the third problem will be described below.

After the drx-InactivityTimer expires (see FIG. 9), the UE may request the NW to use short DRX cycle or long DRX cycle using MAC CE or PUCCH. The UE may send the request depending on the arrival status of UL data.

After the drx-InactivityTimer expires, the UE may autonomously decide whether it wants to use short DRX cycle or long DRX cycle.

The NW may instruct the UE via MAC CE or PDCCH as to whether the UE should use short DRX cycle or long DRX cycle after the drx-InactivityTimer expires. The NW may transmit the request (instruction) depending on the arrival status of DL data.

(3.2.4) Operation example 4
An example of operation that can solve the fourth problem will be described below.

The NW or UE may set short DRX cycle or long DRX cycle and activate/deactivate drx-InactivityTimer for each DRX group using the MAC CE shown in FIG. 10.

In the relevant MAC CE, the DRX Group ID field refers to the DRX Group for which you want to change the DRX parameters. S field refers to the activation/deactivation state of short DRX cycle. When S field is set to 1, it refers to the activated state. When S field is set to 0, it refers to the deactivated state. L field refers to the activation/deactivation state of Long DRX cycle. When L field is set to 1, it refers to the activated state. When L field is set to 0, it refers to deactivated state. I field refers to the activation/deactivation state of drx-InactivityTimer. When the I field is set to 1, it refers to the activated state. When the I field is set to 0, it refers to the deactivated state. R indicates this field is reserved.

The NW may instruct the UE to set short DRX cycle or long DRX cycle and activate/deactivate drx-InactivityTimer in the MAC CE.

The UE may request the NW for short DRX cycle or long DRX cycle settings and drx-InactivityTimer activation/deactivation preferences in the relevant MAC CE.

The NW or UE may set short DRX cycle or long DRX cycle for multiple DRX groups and activate/deactivate drx-InactivityTimer all at once using MAC CE (see FIG. 11).

The NW may instruct the UE to set short DRX cycles or long DRX cycles for multiple DRX groups and activate/deactivate drx-InactivityTimer using the MAC CE.

The UE may request the short DRX cycle or long DRX cycle settings of multiple DRX groups and drx-InactivityTimer activation/deactivation preferences from the NW using the MAC CE.

(4) Effects ・How to activate/deactivate the configuration of some DRX groups when multiple DRX groups are set ・(re)mapping method between DRX groups and serving cells ・Multiple numbers of each DRX group・How to use short DRX cycle or long DRX cycle after drx-InactivityTimer expires ・How to activate/deactivate short DRX cycle or long DRX cycle According to these embodiments, the following effects are achieved. can get. Specifically, it will be possible to dynamically change the DRX configuration according to the characteristics of XR traffic, which is expected to improve the XR power saving effect.

(5) Other Embodiments Although the embodiments have been described above, it is obvious to those skilled in the art that the embodiments are not limited to the description of the embodiments, and that various modifications and improvements can be made.

In addition, in the above description, the words "configure", "activate", "update", "indicate", "enable", "specify", and "select" can be read interchangeably. good. Similarly, the words "link", "associate", "correspond" and "map" may be used interchangeably, and "allocate", "assign", and "monitor" may be used interchangeably. , map may also be read interchangeably.

Furthermore, "specific", "dedicated", "UE specific", and "UE individual" may be read interchangeably. Similarly, common, shared, group-common, UE-common, and UE-shared may be interchanged.

In this disclosure, "precoding", "precoder", "weight (precoding weight)", "quasi-co-location (QCL)", "Transmission Configuration Indication state (TCI state)", "space "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", Terms such as "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" are interchangeable. can be used.

Furthermore, the block configuration diagrams (FIGS. 2 and 3) used to explain the embodiments described above show blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices. The functional block may be realized by combining software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, allocation gning), but these are limited to I can't. For example, a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.

Furthermore, the gNB 100, UE 200, and AMF 50 (the devices) described above may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 14 is a diagram showing an example of the hardware configuration of the gNB 100, the UE 200, and the AMF 50. As shown in FIG. 14, the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

Note that in the following description, the word "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the device may include one or more of the devices shown in the figure, or may not include some of the devices.

Each functional block of the device (see FIGS. 2 and 3) is realized by any hardware element of the computer device or a combination of hardware elements.

In addition, each function in the device is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls the memory This is realized by controlling at least one of reading and writing data in the storage 1002 and the storage 1003.

The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU) that includes interfaces with peripheral devices, a control device, an arithmetic unit, registers, and the like.

Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes in accordance with these. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. Furthermore, the various processes described above may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.

The memory 1002 is a computer-readable recording medium, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable RO. Consisting of at least one of M (EEPROM), Random Access Memory (RAM), etc. may be done. Memory 1002 may be called a register, cache, main memory, or the like. The memory 1002 can store programs (program codes), software modules, etc. that can execute a method according to an embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, such as an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (such as a compact disk, a digital versatile disk, or a Blu-ray disk). (registered trademark disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc. Storage 1003 may also be called an auxiliary storage device. The above-mentioned recording medium may be, for example, a database including at least one of memory 1002 and storage 1003, a server, or other suitable medium.

The communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc., for example.

The communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplexing (Frequency Division Duplex: FDD) and time division duplexing (Time Division Duplex: TDD). It may be composed of.

The input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses for each device.

Furthermore, the device includes a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic Consists of hardware such as Device (PLD), Field Programmable Gate Array (FPGA), etc. A part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.

Furthermore, the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods. For example, the information notification may be performed using physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information) Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. RRC signaling may also be called an RRC message, for example, RRC Connection Setup (RRC Connection Setup). The message may be a setup message, an RRC connection reconfiguration message, or the like.

Each aspect/embodiment described in this disclosure is applicable to Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4th generation mobile communication. ion system (4G), 5th generation mobile communication system ( 5G), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 ( Wi-Fi (registered trademark) )), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), and other appropriate systems and systems that are extended based on these. It may be applied to at least one next generation system. Furthermore, a combination of a plurality of systems may be applied (for example, a combination of at least one of LTE and LTE-A and 5G).

The order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.

In this disclosure, the specific operation performed by the gNB 100 may be performed by its upper node in some cases. In a network consisting of one or more network nodes including gNB 100, various operations performed for communication with UE 200 are performed by gNB 100 and other network nodes other than gNB 100 (for example, MME or S-GW). It is clear that this can be carried out by at least one of the following methods (conceivable, but not limited to). In the above example, there is one network node other than the gNB 100, but it may be a combination of multiple other network nodes (for example, MME and S-GW).

Information, signals (information, etc.) can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.

The input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information that is input and output may be overwritten, updated, or additionally written. The output information may be deleted. The input information may be sent to other devices.

The determination may be made using a value expressed by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (for example, a predetermined value). (comparison with a value).

Each aspect/embodiment described in this disclosure may be used alone, in combination, or may be switched and used in accordance with execution. In addition, notification of prescribed information (for example, notification of "X") is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.

Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.

Additionally, software, instructions, information, etc. may be sent and received via a transmission medium. For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of the foregoing. It may also be represented by a combination of

Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms that have the same or similar meanings. For example, at least one of the channel and the symbol may be a signal. Also, the signal may be a message. Further, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, or the like.

As used in this disclosure, the terms "system" and "network" are used interchangeably.

In addition, the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or using other corresponding information. may be expressed. For example, radio resources may be indicated by an index.

The names used for the parameters mentioned above are not restrictive in any respect. Furthermore, the mathematical formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (e.g. PUCCH, PDCCH, etc.) and information elements can be identified by any suitable designation, the various names assigned to these various channels and information elements are in no way exclusive designations. isn't it.

In this disclosure, "Base Station (BS)," "wireless base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," " Access Points, "Transmission Point", "Receive Point", "Sending Points (Transmission / Reception Point)", "Sel", "Sel" "Sector", "Cell Group", " The terms "carrier", "component carrier", etc. may be used interchangeably. The gNB 100 may also be called a macro cell, a small cell, a femto cell, a pico cell, or the like.

The gNB 100 can accommodate one or more (for example, three) cells (also called sectors). When the gNB 100 accommodates multiple cells, the entire coverage area of the gNB 100 can be divided into multiple smaller areas, and each smaller area is divided into a base station subsystem (e.g., an indoor small base station (Remote Radio Head: Communication services can also be provided by RRH).

The term "cell" or "sector" refers to part or the entire coverage area of at least one of the gNB 100 and the base station subsystem that provide communication services in this coverage.

In this disclosure, terms such as "mobile station (MS)," "user terminal," "user equipment (UE)," and "terminal" may be used interchangeably. .

A mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

At least one of the gNB 100 and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. Note that at least one of the gNB 100 and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like. The moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ). Note that at least one of the gNB 100 and the mobile station also includes devices that do not necessarily move during communication operations. For example, at least one of the gNB 100 and the mobile station may be an Internet of Things (IoT) device such as a sensor.

Additionally, the gNB 100 in the present disclosure may be read as a mobile station (user terminal, hereinafter the same). For example, a configuration in which communication between the gNB 100 and the mobile station is replaced with communication between multiple mobile stations (for example, may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.) Each aspect/embodiment of the present disclosure may be applied. In this case, the mobile station may have the functions that the gNB 100 has. Further, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be replaced with side channels.

Similarly, the mobile station in the present disclosure may be read as gNB 100. In this case, the gNB 100 may have the functions that the mobile station has. A radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.

The numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transmission and reception. It may also indicate at least one of a specific filtering process performed by the device in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.

A slot is one or more symbols in the time domain (Orthogonal Frequency Division Multiplexing (OFDM)) symbol, Single Carrier Frequency Division Multiple iple Access (SC-FDMA) symbol, etc.). A slot may be a unit of time based on numerology.

A slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot. PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.

Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.

For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, and one slot or minislot may be called a TTI. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the gNB 100 performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis. Note that the definition of TTI is not limited to this.

The TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.

Note that when one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum time unit for scheduling. Further, the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.

A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI that is shorter than a normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

Note that long TTI (for example, normal TTI, subframe, etc.) may be read as TTI with a time length exceeding 1 ms, and short TTI (for example, short TTI, etc.) It may also be read as a TTI having the above TTI length.

A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example. The number of subcarriers included in an RB may be determined based on numerology.

Additionally, the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

Note that one or more RBs include a physical resource block (Physical RB: PRB), a sub-carrier group (SCG), a resource element group (Resource Element Group: REG), a PRB pair, an RB pair, etc. May be called.

Additionally, a resource block may be configured by one or more resource elements (RE). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

Bandwidth Part (BWP) (also called partial bandwidth, etc.) refers to a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier. good. Here, the common RB may be specified by an RB index based on a common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

The BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP). One or more BWPs may be configured within one carrier for a UE.

At least one of the configured BWPs may be active and the UE may not expect to transmit or receive a given signal/channel outside of the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be replaced with "BWP".

The structures of radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB, Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

The terms "connected", "coupled", or any variations thereof, mean any connection or coupling, direct or indirect, between two or more elements and each other. It can include the presence of one or more intermediate elements between two elements that are "connected" or "coupled." The bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access." As used in this disclosure, two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges, and the like.

The reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot depending on the applied standard.

As used in this disclosure, the phrase "based on" does not mean "based solely on" unless explicitly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

"Means" in the configurations of each of the above devices may be replaced with "unit", "circuit", "device", etc.

As used in this disclosure, any reference to elements using the designations "first," "second," etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed therein or that the first element must precede the second element in any way.

Where the terms "include", "including", and variations thereof are used in this disclosure, these terms are inclusive, as is the term "comprising". It is intended that Furthermore, the term "or" as used in this disclosure is not intended to be exclusive or.

In the present disclosure, when articles are added through translation, such as a, an, and the in English, the present disclosure may include that the nouns following these articles are plural.

As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of operations. "Judgment" and "decision" include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring. iry) (e.g., a search in a table, database, or other data structure), and assuming that an assertion has been made is a "judgment" or "decision." Also, "judgment" and "decision" refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access. (accessing) (for example, accessing data in memory) may include regarding the act as a "judgment" or "decision." In addition, "judgment" and "decision" mean that things such as resolving, selecting, choosing, establishing, and comparing are considered to be "judgment" and "decision." may be included. In other words, "judgment" and "decision" may include regarding some action as having been "judged" or "determined." Moreover, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted similarly to "different."

FIG. 15 is a diagram showing a configuration example of the vehicle 2001. As shown in FIG. 15, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, an electronic control unit 2010, It includes various sensors 2021 to 2029, an information service section 2012, and a communication module 2013.

The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.

The steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2027 provided in the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 may be called an ECU (Electronic Control Unit).

Signals from various sensors 2021 to 2028 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028.

The information service department 2012 includes various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide various information such as driving information, traffic information, and entertainment information, as well as one or more devices that control these devices. It consists of an ECU. The information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 1 using information acquired from an external device via the communication module 2013 and the like.

The driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (for example, IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors to prevent accidents. or reduce the driver's driving load. The system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.

The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 1 via the communication port. For example, the communication module 2013 communicates via the communication port 2033 with a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, which are included in the vehicle 2001. Data is transmitted and received between the axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and the sensors 2021 to 2028.

The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, the gNB 100, a mobile station, or the like.

The communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication. In addition, the communication module 2013 also receives the front wheel and rear wheel rotational speed signals inputted to the electronic control unit 2010 and acquired by the rotational speed sensor 2022, the front wheel and rear wheel air pressure signals acquired by the air pressure sensor 2023, and the vehicle speed sensor. 2024, an acceleration signal obtained by acceleration sensor 2025, an accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by brake pedal sensor 2026, and a shift lever. A shift lever operation signal acquired by the sensor 2027 and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028 are also transmitted to the external device via wireless communication.

The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service section 2012 provided in the vehicle. Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, and left and right rear wheels provided in the vehicle 2001. 2008, axle 2009, sensors 2021 to 2028, etc. may also be controlled.

<Additional notes>
The terminal or base station of this embodiment may be configured as the terminal or base station shown in each section below.

(Section 1)
A control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted during a specific period between a terminal and a base station, and information for setting the groups to an active state or an inactive state. a receiving unit that receives from the base station.

(Section 2)
The terminal according to claim 1, wherein the control unit performs mapping between the group and a serving cell of the terminal in a radio resource control layer.

(Section 3)
a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted during a specific period between a terminal and a base station; and switching parameters included in the groups for each group. A terminal comprising: a receiving unit that receives a signal or a signal indicating that the parameters included in the plurality of groups are to be switched all at once from the base station by a control element of media access control.

(Section 4)
a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted in a specific period between a terminal and a base station; A terminal comprising: a transmitter that transmits a request signal or a signal requesting the parameters of a plurality of groups used by the terminal all at once to the base station by a control element of media access control.

Although the present disclosure has been described in detail above, it is clear for those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as determined by the claims. Therefore, the description of the present disclosure is for the purpose of illustrative explanation and is not intended to have any limiting meaning on the present disclosure.

10 Wireless communication system 20 NG-RAN
40 Core network 50 AMF
51 Communication unit 52 Transmission unit 53 Control unit 100 gNB (wireless base station)
200 UE (head mounted terminal)
210 Wireless signal transmission/reception section 220 Amplifier section 270 Control section 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus 2001 Vehicle 2002 Drive section 2003 Steering section 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Left and right front wheels 2008 Left and right rear wheels 2009 axle 2010 axle 2010 electron control unit 2013 information service department 2013 1221 current sensor 222222 rotation number 2023 air pressure sensor 2024 vehicle speed sensor 2024 vehicle speed sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 object detection Sensor 2028 29 Axel pedal sensor 2030 Driving support system section 2031 Microprocessor 2032 Memory (ROM, RAM)
2033 Communication port

Claims

a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted during a specific period between a terminal and a base station;
a receiving unit that receives information for setting the group into an active state or an inactive state from the base station;
A terminal equipped with
The terminal according to claim 1, wherein the control unit performs mapping between the group and the serving cell of the terminal in a radio resource control layer.
a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted during a specific period between a terminal and a base station;
A control element for media access control receives from the base station a signal indicating that parameters included in the group are to be switched for each group, or a signal indicating that the parameters included in a plurality of groups are to be switched all at once. Department and
A terminal equipped with
a control unit that sets a plurality of groups including parameters related to uplink data and downlink discontinuous reception transmitted during a specific period between a terminal and a base station;
A control element for media access control sends to the base station a signal requesting the parameters to be used by the terminal for each group, or a signal requesting the parameters of a plurality of groups to be used by the terminal all at once. a transmitting section that transmits;
A terminal equipped with