CN116671189A

CN116671189A - Timer state changing method, device, terminal and storage medium

Info

Publication number: CN116671189A
Application number: CN202180086229.XA
Authority: CN
Inventors: 胡奕; 李海涛; 于新磊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2023-08-29
Also published as: WO2022205479A1

Abstract

The application discloses a method, a device, a terminal and a storage medium for changing a timer state, and belongs to the technical field of wireless communication. The method comprises the following steps: during the running period of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, under the condition that the transmission of the terminal meets the second condition, the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is changed, so that a feasible scheme of updating the running state of the DRX-HARQ-RTT-Timer according to the operation executed by the first uplink HARQ process is provided, the timing function of the DRX-HARQ-RTT-Timer is more accurate, the condition that the terminal monitors a PDCCH channel due to the overtime of the DRX-HARQ-RTT-Timer at unnecessary time is avoided, and the power consumption of the terminal is reduced.

Description

Timer state changing method, device, terminal and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, a terminal, and a storage medium for changing a timer state.

Background

In a fifth Generation mobile communication (5 th-Generation, 5G) network, a DRX (Discontinuous Reception ) mechanism is introduced based on energy saving considerations.

The UE with the DRX mechanism can trigger the UE to enter a Sleep state (Sleep Mode) in a certain time period through the DRX timer, does not monitor the PDCCH subframe, and wakes up the UE from the Sleep state when the DRX timer determines that the terminal is in the time period needing to monitor, so that the power consumption generated by the UE monitoring the PDCCH is reduced.

In the above scheme, the UE may be awakened by the DRX timer during a period in which it is not required to monitor the PDCCH, resulting in unnecessary power consumption.

Disclosure of Invention

The embodiment of the application provides a method, a device, a terminal and a storage medium for changing a timer state. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides a method for changing a timer state, where the method includes:

and changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process under the condition that the transmission of the terminal meets a first condition during the running of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the terminal.

In yet another aspect, an embodiment of the present application provides a method for changing a state of a timer, including:

and changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process under the condition that the transmission of the terminal meets a second condition during the running of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process of the terminal.

In still another aspect, an embodiment of the present application provides a timer state changing apparatus, including:

the first timer changing module changes the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process under the condition that the transmission of the device meets a first condition during the running of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the device.

In yet another aspect, an embodiment of the present application provides a timer state changing apparatus, including:

and a second timer changing module, configured to change, during operation of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process of the apparatus, an operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process if the transmission of the apparatus meets a second condition.

In yet another aspect, an embodiment of the present application provides a terminal, where the terminal includes a processor, a memory, and a transceiver, where the memory stores a computer program, and the computer program is configured to be executed by the processor to implement the above-mentioned timer state change method.

In yet another aspect, an embodiment of the present application further provides a computer readable storage medium having a computer program stored therein, the computer program being loaded and executed by a processor to implement the above-described timer state change method.

In another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the terminal reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the terminal performs the above-described timer state change method.

The technical scheme provided by the embodiment of the application can bring the following beneficial effects:

when the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the terminal runs, and the transmission process of the terminal meets the first condition, the network side equipment may not issue the PDCCH to the terminal within a period of time when the uplink transmission occurs, and the terminal does not need to monitor the PDCCH at the moment, so that the terminal can change the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process, for example, the next timeout time of RTT is reasonably prolonged by stopping or restarting and the like, unnecessary monitoring of the terminal due to the timeout of the DRX-HARQ-RTT-Timer is reduced, the power consumption of the terminal is reduced, and the electric quantity of the terminal is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a network architecture of a communication system provided by one embodiment of the present application;

fig. 2 shows a DRX cycle diagram of a terminal;

FIG. 3 is a flow chart illustrating a method for changing the state of a timer according to one embodiment of the present application;

FIG. 4 is a flow chart illustrating a method for changing the state of a timer according to one embodiment of the present application;

FIG. 5 is a timing diagram illustrating a method of changing the state of a timer according to the embodiment of FIG. 4;

FIG. 6 is a timing diagram illustrating a method of changing the state of a timer according to the embodiment of FIG. 4;

FIG. 7 is a timing diagram illustrating a method of changing the state of a timer according to the embodiment of FIG. 4;

FIG. 8 is a timing diagram of a method for changing the state of a timer according to the embodiment shown in FIG. 4;

FIG. 9 is a flow chart illustrating a method for changing the state of a timer according to one embodiment of the present application;

FIG. 10 is a flow chart illustrating a method for changing the state of a timer according to one embodiment of the present application;

FIG. 11 is a timing diagram illustrating a method of changing the state of a timer according to the embodiment of FIG. 10;

FIG. 12 is a timing diagram illustrating a method of changing the state of a timer according to the embodiment of FIG. 10;

FIG. 13 is a flow chart of a timer state change method according to the embodiment of FIG. 10;

FIG. 14 is a block diagram of a timer state changing device according to one embodiment of the present application;

FIG. 15 shows a block diagram of a timer state changing apparatus provided by one embodiment of the present application;

fig. 16 is a schematic structural view of a communication device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network side devices), and the present application is not limited to the specific implementation manner thereof. Such as predefined may refer to what is defined in the protocol.

Fig. 1 is a schematic diagram of a network architecture of a communication system according to an embodiment of the present application. The network architecture may include: terminal 10, base station 20, and core network 30.

The number of terminals 10 is typically plural and one or more terminals 10 may be distributed within the cell managed by each base station 20. The terminal 10 may include various handheld devices, vehicle mount devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile Station (MS), terminal devices (terminal devices), etc. having wireless communication capabilities. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as a terminal.

The base station 20 is a device deployed in an access network to provide wireless communication functionality for the terminal 20. The base stations 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. The names of base station capable devices may vary in systems employing different Radio access technologies, for example in 5G New Radio (NR) systems, called gndeb or gNB. As communication technology evolves, the name "base station" may change. For convenience of description, in the embodiment of the present application, the above-mentioned devices for providing the wireless communication function for the terminal 20 are collectively referred to as a base station.

In the embodiment of the present application, the base station 20 may include at least two base stations, where the at least two base stations are respectively used to cover cells corresponding to the base stations.

The Core Network (CN) 30 mainly provides a user connection, management of a user, and completion of a bearer for a service, and provides an interface to an external Network as a bearer Network. The establishment of the user connection comprises the functions of mobility management, call management, switching/routing, recording notification (connection relation to the peripheral devices of the intelligent network is completed in combination with the intelligent network service) and the like.

Optionally, not shown in fig. 1, the network architecture further includes other network side devices, such as: a central control node (Central Network Control, CNC), session management functions (Session Management Function, SMF) or user plane functions (User Plane Function, UPF) devices, and so on.

The "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but a person skilled in the art may understand the meaning thereof. The technical scheme described in the embodiment of the disclosure can be applied to a 5G NR system and also can be applied to a subsequent evolution system of the 5G NR system.

Currently, with the pursuit of speed, delay, high-speed mobility, energy efficiency and the diversity and complexity of future life services, the 3GPP international standards organization starts to develop 5G for this purpose. The main application scenario of 5G is: eMBB (Enhanced Mobile Broadband, enhanced mobile ultra-wideband), URLLC (Ultra Reliable Low Latency Communication, low latency high reliability communication), mctc (Massive Machine Type Communication, large scale machine type communication).

embbs still target users to obtain multimedia content, services, and data, and their demand is growing very rapidly. On the other hand, since the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., the capability and demand of the eMBB are also relatively different, so that detailed analysis must be performed in connection with a specific deployment scenario. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.

NR can also be deployed independently, and in order to reduce air interface signaling and quickly restore wireless connection and quickly restore data service in 5G network environment, a new RRC state, namely RRC_INACTIVE state is defined. This state is different from the rrc_idle and rrc_active states.

Rrc_idle (IDLE state): mobility is based on cell selection reselection of the UE, paging is initiated by the CN and paging areas are configured by the CN. The base station side does not have the UE AS context. There is no RRC connection.

Rrc_connected (CONNECTED state): there is an RRC connection and the base station and UE have a UE AS context. The network side knows that the location of the UE is cell specific. Mobility is network-side controlled mobility. Unicast data may be transmitted between the UE and the base station.

Rrc_inactive (INACTIVE): mobility is cell selection reselection based on UE, there is a connection between CN-NRs, UE AS context exists on a certain base station, paging is triggered by RAN (Radio Access Network ), paging area based on RAN is managed by RAN, network side knows UE location is based on paging area level of RAN.

In 5G NR, the network may configure DRX (Discontinuous Reception ) function for the terminal, so that the terminal discontinuously listens to the PDCCH, so as to achieve the purpose of terminal power saving. Fig. 2 shows a DRX cycle diagram of a terminal. As shown in fig. 2, in one DRX cycle, when a terminal determines a wake-up period in the DRX cycle, the terminal allows to monitor a PDCCH; when the terminal is determined to be in the sleep period in the DRX cycle, the terminal does not monitor the PDCCH.

Each MAC entity has a DRX configuration, and the configuration parameters of the DRX include:

-DRX-onDurationTimer: duration at the beginning of the DRX cycle.

-DRX-SlotOffset: delay before the start of the DRX cycle.

-DRX-inactivity timer: the duration after the PDCCH opportunity that instructs the MAC entity to make the PDCCH of the new UL or DL transmission.

-DRX-retransmission timerdl: the maximum duration before receiving a downlink HARQ (Hybrid Automatic Repeat Request ) retransmission grant.

-DRX-retransmission timer ul: the maximum duration before receiving the uplink HARQ retransmission grant.

-DRX-longcycle offset: long DRX, and delay before the start of long DRX cycle and short DRX cycle.

-DRX-ShortCycle (optional): short DRX cycle.

-DRX-ShortCycleTimer (optional): the UE follows the duration of the short DRX cycle.

-DRX-HARQ-RTT-TimerDL: the UE receives a minimum duration indicating a downlink grant prior to downlink HARQ retransmission.

-DRX-HARQ-RTT-TimerUL: the minimum duration before the UE receives the uplink grant indicating uplink HARQ retransmission.

If the terminal configures DRX, the terminal needs to monitor PDCCH during the DRX active period. The DRX active period includes several cases:

(1) DRX-onDurationTimer, DRX-InactivityTimer, DRX-RetransmissionTimerDL, DRX-RecranspossitionTimerUL and ra-ContentionResoltTimer, any one of these 5 timers is running.

(2) The SR is transmitted on the PUCCH and is in a pending state.

(3) In the contention-based random access procedure, the terminal has not received one initial transmission of the C-RNTI-scrambled PDCCH indication after successfully receiving the random access response.

The terminal decides the time for starting the DRX-onduration timer according to whether it is currently in the long DRX cycle or the short DRX cycle, and is specifically defined as follows:

if a short DRX cycle is used, and the current subframe satisfies [ (sfn×10) +subframe number ] module (DRX-short cycle) = (DRX-StartOffset) module (DRX-short cycle); or if a long DRX cycle is used, and the current subframe satisfies [ (sfn×10) +subframe number ] module (DRX-LongCycle) =drx-StartOffset. Wherein, SFN refers to system frame number.

The DRX-onDurationTimer is started at a time after the DRX-SlotOffset slot at which the current subframe starts.

The condition for starting or restarting the DRX-InactivityTimer by the terminal is as follows:

if the terminal receives a PDCCH indicating the initial downlink or uplink transmission, the terminal starts or restarts the DRX-InactivityTimer.

The conditions for the terminal to start and stop DRX-RecransposionTimerDL are:

when the terminal receives a PDCCH indicating downlink transmission or receives a MAC PDU on the configured downlink grant resource, the terminal stops DRX-retransmission TimerDL corresponding to the HARQ process. And the terminal starts the DRX-HARQ-RTT-TimerDL corresponding to the HARQ process after finishing the transmission fed back by the HARQ process for the downlink transmission.

If a timer DRX-HARQ-RTT-TimerDL corresponding to a certain HARQ of the terminal is overtime and the downlink data transmitted by using the HARQ process is not successfully decoded, the terminal starts a DRX-retransmission TimerDL corresponding to the HARQ process.

The conditions for the terminal to start and stop DRX-RecransposionTimerUL are:

when the terminal receives a PDCCH indicating uplink transmission or when the terminal transmits a MAC PDU on the configured uplink grant resource, the terminal stops the DRX-retransmission TimerUL corresponding to the HARQ process. After finishing the first repetition transmission (repetition) of the PUSCH, the terminal starts the DRX-HARQ-RTT-timer ul corresponding to the HARQ process.

If the timer DRX-HARQ-RTT-TimerUL corresponding to a certain HARQ of the terminal is overtime, the terminal starts the DRX-retransmission TimerUL corresponding to the HARQ process.

Based on the current DRX mechanism, the DRX-HARQ-RTT-TimerUL/DRX-HARQ-RTT-TimerDL and the retransmission TimerUL/retransmission TimerDL are maintained separately on a per UL/DL HARQ process basis. The drx-HARQ-RTT-timer ul and drx-HARQ-RTT-timer dl are respectively the minimum time intervals for which the UE expects retransmission scheduling for the corresponding HARQ process. Meanwhile, for the UE with the configured DRX, the UE monitors the PDCCH at the DRX Active Time. Thus, there is an understanding for drx-HARQ-RTT-timertl and drx-HARQ-RTT-timertl that: during the operation of the DRX-HARQ-RTT-timer ul (if HARQ process i is an uplink HARQ process) or DRX-HARQ-RTT-timer dl (if HARQ process i is a downlink HARQ process) of a certain HARQ process i, if the UE is currently in DRX Active Time for other reasons (such as the retransmission timer ul/retransmission timer dl of other HARQ processes is running or the DRX-inactivity timer is running, etc.), the network may still schedule retransmissions of HARQ process i during this Time, since the UE's behavior is to monitor the PDCCH. That is, the UE may still receive the PDCCH of the network scheduling the HARQ process i during the HARQ RTT timer run corresponding to this HARQ process. Based on the current protocol description, in the above behavior example, if the UE receives the PDCCH to indicate an uplink transmission, the UE stops retransmission timer ul corresponding to the HARQ process, and starts drx-HARQ-RTT-timer ul corresponding to the HARQ process after the first symbol of the terminal after the first repetition (retransmission) of the PUSCH is completed. If the UE receives the PDCCH during the drx-HARQ-RTT-timer ul run of the HARQ process, retransmission timer ul may be started due to drx-HARQ-RTT-timer ul timeout before the UE transmits PUSCH, resulting in additional power consumption of the UE.

The above HARQ process i is hereinafter denoted as a first uplink/downlink HARQ process.

The embodiment of the application is based on a DRX mechanism, and provides a feasible scheme for controlling the terminal to monitor a downlink physical control channel (PDCCH) by determining the state of a DRX timer of the terminal in an RRC connection state. And in the present application, DRX and DRX are abbreviations of discontinuous reception (Discontinuous Reception), which represent the same.

Fig. 3 shows a flowchart of a method for changing a timer state according to an embodiment of the present application, which may be performed by a terminal, which may be the terminal 10 in the network architecture shown in fig. 1. The method may comprise the steps of:

step 301: and changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process under the condition that the transmission of the terminal meets a first condition during the running of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the terminal.

In one possible implementation, the first condition includes: and the terminal transmits a first MAC PDU in the running period of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process. Wherein the first uplink HARQ process is any one of the uplink HARQ processes of the terminal.

In one possible implementation manner, when the terminal transmits the first MAC PDU during the operation of the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process, the operation state of the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process is changed. Wherein the first MAC PDU is a MAC PDU transmitted using the first uplink HARQ process.

When the terminal transmits the first MAC PDU by using the first uplink HARQ process, the network side equipment does not issue corresponding indication information through the PDCCH within a certain time after the terminal transmits the first MAC PDU by using the first uplink HARQ process, so that the terminal does not need to monitor the PDCCH within a certain time, and at the moment, the terminal can update the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process, thereby avoiding the monitoring of the PDCCH due to the overtime of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.

In one possible implementation manner, during the operation of the terminal in the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process, N times of repeated transmission of the first MAC PDU is performed on the PUSCH through CG grant-free, and the operation state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process is modified if the listen before talk LBT failure indication sent by the physical layer is not received.

The terminal can realize transmission of the first MAC PDU through CG unlicensed and at least one binding (bundle) data transmission during the running period of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process, and when the terminal does not receive the listen before talk LBT failure indication sent by the physical layer, the terminal indicates that the terminal successfully sends the channel to the PUSCH, and at the moment, the terminal can change the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process, so that the monitoring delay of the PDCCH is caused, and unnecessary power consumption is avoided.

In one possible implementation, when the first repeated transmission of the PUSCH transmission corresponding to the first MAC PDU is performed using the first uplink HARQ process, the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process is stopped.

In one possible implementation, after completing the first repeated transmission of the PUSCH corresponding to the first MAC PDU using the first uplink HARQ process, the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process is started or restarted.

In one possible implementation manner, when the terminal receives the PDCCH to instruct the first MAC PDU to be transmitted by using the first uplink HARQ process during the operation of the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process, the terminal changes the operation state of the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process.

The terminal may further receive, during the operation period of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process, N times of data transmission by the network side device through the first indication information issued by the PDCCH to transmit the first MAC PDU, where the terminal still receives, during the operation period of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process, the first indication information issued by the network side device through the PDCCH through other HARQ, and changes the operation state of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process under the condition that the first indication information is transmitted N times of data to transmit the first MAC PDU, so that the first HARQ delay is monitored, thereby avoiding unnecessary power consumption.

In one possible implementation, when the terminal receives the PDCCH, the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process is stopped.

In one possible implementation, after completing a first time symbol of a first repetition transmission of a PUSCH transmission corresponding to the first MAC PDU using the first uplink HARQ process, a DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process is started.

In one possible implementation, when the terminal receives the PDCCH and instructs the first MAC PDU to be transmitted using the first uplink HARQ process, the first retransmission timer dl corresponding to the first uplink HARQ process is stopped.

In summary, in the scheme shown in the embodiment of the present application, when the DRX-HARQ-RTT-Timer ul corresponding to the first uplink HARQ process of the terminal runs and the transmission process of the terminal meets the first condition, the network side device may not issue the PDCCH to the terminal within a period of time when the uplink transmission occurs, and the terminal does not need to monitor the PDCCH at this time, so that the terminal may change the running state of the DRX-HARQ-RTT-Timer ul corresponding to the first uplink HARQ process, for example, by stopping or restarting, to reasonably prolong the next timeout time of RTT, reduce unnecessary monitoring caused by the timeout of the DRX-HARQ-RTT-Timer, reduce power consumption of the terminal, and save the electric quantity of the terminal.

Fig. 4 is a flowchart of a method for changing a timer state according to an embodiment of the present application, which may be performed by a terminal and a network side device, where the terminal may be the terminal 10 in the network architecture shown in fig. 1, and the network side device may be the base station 20 in the network architecture shown in fig. 1. The method may comprise the steps of:

step 401: and determining DRX configuration parameters corresponding to the terminal according to the first configuration information.

The DRX configuration parameters are used for configuring each DRX timer corresponding to the terminal.

In one possible implementation manner, the first configuration information is sent by the network side device to the terminal through downlink signaling.

In another possible implementation, the first configuration information may be pre-stored in the terminal.

That is, the terminal may configure the DRX timer of the terminal according to the first configuration information stored in the terminal in advance.

In one possible implementation, the first configuration information is further used to indicate the HARQ process number of the terminal. When the number of HARQ processes of the terminal is greater than or equal to 2, the terminal may configure a plurality of HARQ processes according to the first configuration information, so as to implement data transmission with the network device.

Step 402: and changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process under the condition that the transmission of the terminal meets a first condition during the running of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the terminal.

Wherein the first uplink HARQ process is any one of the uplink HARQ processes of the terminal.

In a possible implementation manner, when the first uplink HARQ process meets a first condition, the terminal may change the running state of the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process, so that the terminal may update the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process according to the operation performed by the first uplink HARQ process, so that the timing function of the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process is more accurate, and the situation that the terminal listens to the PDCCH channel due to the timeout of the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process at an unnecessary time is avoided, thereby reducing the power consumption of the terminal, saving the power consumption of the terminal, and prolonging the endurance time of the terminal.

In one possible implementation manner, when the terminal transmits the first MAC PDU during the operation of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process, the operation state of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process is changed. Wherein the first MAC PDU is a MAC PDU corresponding to the first HARQ.

The first uplink HARQ process satisfies a first condition, that is, the terminal transmits a first MAC PDU during the operation period of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process. At this time, under the condition that the terminal uses the first uplink HARQ process to transmit the first MAC PDU, the running state of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process may be changed, so as to ensure that the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process corresponds to the current transmission state of the first uplink HARQ process, and avoid the terminal from performing monitoring at an unnecessary moment.

In one possible implementation manner, during the operation of the terminal in the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process, N times of repeated transmission of the first MAC PDU is performed on the PUSCH through CG grant-free, and the operation state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process is changed if the listen before talk LBT failure indication sent by the physical layer is not received.

The terminal may use the first uplink HARQ process to perform N repeated transmissions of the first MAC PDU on the PUSCH through CG grant-free. When the terminal performs N times of repeated transmission on the PUSCH by CG without authorization and the terminal does not receive the listen before talk LBT failure indication sent by the physical layer, it is indicated that the terminal succeeds in sending the first MAC PDU, and at this time, the terminal is in a running period of DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process, in order to ensure that the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process corresponds to the current transmission state of the first uplink HARQ process, the running state of DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process may be changed.

And stopping DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process when the terminal uses the first uplink HARQ process to execute the first repeated transmission of the PUSCH transmission corresponding to the first MAC PDU through CG authorization-free. When the terminal executes the first repeated transmission of the PUSCH transmission corresponding to the first MAC PDU, the terminal uploads the data using the first uplink HARQ process, and after receiving the data uploaded using the first uplink HARQ process, the network side device does not issue signaling through the PDCCH in a short time, so that the terminal can stop the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process first, and unnecessary power consumption is avoided.

When the terminal uses the first uplink HARQ process to finish the first time symbol after the first repeated transmission of the PUSCH corresponding to the first MAC PDU by CG authorization, the terminal uses the first uplink HARQ process to finish the first repeated transmission to the network side device, and the network side device also finishes the action of receiving the data of the first repeated transmission, at this time, the terminal can restart the DRX-HARQ-RTT-timeul corresponding to the stopped first uplink HARQ process, so that the terminal monitors the PDCCH when the DRX-HARQ-RTT-timeul corresponding to the first uplink HARQ process is restarted to timeout.

When the terminal uses the first uplink HARQ process and does not authorize to finish a first time symbol after the first repeated transmission of the PUSCH corresponding to the first MAC PDU through CG, the terminal uses the first uplink HARQ process to finish the first repeated transmission to the network side equipment, the network side equipment also finishes the action of receiving the data of the first repeated transmission, when the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process is in a stop state at this moment, the terminal can be started so as to restart the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process and run to a time exceeding moment, and the terminal monitors the PDCCH; when the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process is in the running state, the restart operation may be performed on the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process in the running state, so that after the terminal finishes the first repeated transmission of the PUSCH transmission corresponding to the first MAC PDU by using the first uplink HARQ process, the terminal starts to reclock the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process.

Fig. 5 shows a timing diagram of a method for changing a timer state according to an embodiment of the present application. As shown in fig. 5, in CG (Configured Grant), there is shown a first retransmission of PUSCH transmission corresponding to the first MAC PDU, and in the process of the first retransmission, the terminal 501 uploads the first MAC PDU to the network side device. The terminal 501 starts to upload the first MAC PDU to the network side device 502, and at this time, the first retransmission timer ul is running, the terminal may stop the first retransmission timer ul, and start the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process at the first time symbol after the first MAC PDU is uploaded; at this time, the terminal 501 may stop the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process, and start the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process at a first time symbol after the first MAC PDU is uploaded.

Fig. 6 shows a timing diagram of a method for changing a timer state according to an embodiment of the present application. As shown in fig. 6, in CG unlicensed transmission, there is shown a first retransmission of PUSCH transmission corresponding to the first MAC PDU, and in the process of the first retransmission, the terminal 601 uploads the first MAC PDU to the network side device. The terminal 601 starts uploading a first MAC PDU to the network side device 602, and a first retransmission timer ul is running, at this time, the terminal may stop the first retransmission timer ul, start a first time symbol after the first MAC PDU is uploaded, and start a DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process; the terminal 601 starts to upload the first MAC PDU to the network side device 602, and the terminal is in a state that the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process is running, and may restart the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process at the first time symbol after the first MAC PDU is uploaded.

At this time, the first condition includes: and during the running period of the terminal in the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process, the terminal receives the PDCCH to instruct the first uplink HARQ process to transmit the first MAC PDU. At this time, under the condition that the first uplink HARQ process transmits the first MAC PDU according to the indication of the PDCCH, the running state of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process may be changed, so as to ensure that the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process corresponds to the current transmission state of the first uplink HARQ process, avoid the first uplink HARQ process monitoring resources at unnecessary moments, reduce power consumption of the terminal, save electric quantity of the terminal, and prolong the duration of the terminal.

When the terminal receives the PDCCH and the PDCCH indicates to transmit the first MAC PDU by using the first uplink HARQ process, the terminal can schedule the first uplink HARQ process to execute the operation of transmitting the first MAC PDU according to the indication of the PDCCH, namely when the terminal receives the PDCCH, the terminal starts to execute the operation of transmitting the first MAC PDU by using the first uplink HARQ process, and if the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process normally operates, the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process can be stopped, so that the condition that the terminal monitors resources at unnecessary time due to the overtime of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process is avoided.

When the terminal uses the first uplink HARQ process and receives a first time symbol after the first repeated transmission of the PUSCH corresponding to the first MAC PDU is completed by the PDCCH, the terminal uses the first uplink HARQ process to complete the first repeated transmission to the network side device, and the network side device also completes the action of receiving the data of the first repeated transmission, at this time, the terminal can restart the DRX-HARQ-RTT-timer corresponding to the stopped first uplink HARQ process, so that the terminal controls the PDCCH corresponding to the first uplink HARQ process to monitor according to the DRX-HARQ-RTT-timer corresponding to the first uplink HARQ process.

Fig. 7 shows a timing diagram of a method for changing a timer state according to an embodiment of the present application. As shown in fig. 7, it shows that, after the network side device 702 sends the first indication information to the terminal 701 in the PDCCH, and the terminal 701 receives the first indication information, it may start to transmit a first MAC PDU corresponding to the first indication information to the network side device 702. When the terminal 701 receives first indication information sent by the network side device 702 to the terminal in the PDCCH, and at this time, the first retransmission timer ul is running, at this time, the terminal may stop the first retransmission timer ul, start the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process at the first time symbol after the first MAC PDU is uploaded; when the terminal 701 receives first indication information sent by the network side device 702 to the terminal in the PDCCH, and at this time, the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process is running, the terminal may stop the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process at the moment when the terminal 701 receives the PDCCH, and start the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process at a first time symbol after the first MAC PDU is uploaded.

Fig. 8 is a timing diagram of a method for changing a timer state according to an embodiment of the present application. Fig. 8 shows a state change of the DRX timer by the terminal when the terminal receives the PDCCH and performs data retransmission according to the PDCCH.

At time t1, when the terminal receives the PDCCH and the drx-retransmission timer UL corresponding to the first uplink HARQ process is in a starting state, the terminal closes a drx-retransmission timer UL timer corresponding to the first uplink HARQ process; or when the terminal receives the PDCCH and the drx-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process is in a starting state, the terminal stops the drx-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.

At time t2, after the terminal finishes the first repeated transmission of the first MAC PDU in a bundle by using the first uplink HARQ process, starting the drx-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.

Fig. 9 shows a flowchart of a method for changing a timer state according to an embodiment of the present application, which may be performed by a terminal, which may be the terminal 10 in the network architecture shown in fig. 1. The method may comprise the steps of:

step 901, during the running period of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process of the terminal, changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process if the transmission with the terminal meets the second condition.

Wherein the first downlink HARQ process is any one of the downlink HARQ processes of the terminal.

In one possible implementation manner, when the terminal receives the second MAC PDU during the operation of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is changed; wherein the second MAC PDU is a MAC PDU transmitted using the first downlink HARQ process.

When the terminal receives the first MAC PDU by using the first downlink HARQ process, the network side equipment does not issue corresponding indication information through the PDCCH within a certain time after the terminal receives the first MAC PDU, so that the terminal does not need to monitor the PDCCH within a certain time, and at the moment, the terminal can update the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, thereby avoiding the terminal from monitoring the PDCCH at unnecessary time due to overtime of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

In one possible implementation, when the terminal receives the second MAC PDU on the PDSCH through SPS semi-persistent scheduling during operation of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is changed.

The SPS (Semi-Persistent Scheduling ) refers to that after a terminal applies for a resource to a network side device, the corresponding resource is periodically allocated to the terminal in a period of time, so that the terminal can periodically receive the MAC PDU on the PDSCH through SPS Semi-persistent scheduling. When the terminal receives the second MAC PDU on the PDSCH through SPS semi-persistent scheduling during the operation period of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, the terminal may change the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process according to the behavior of the first downlink HARQ process in receiving the second MAC PDU, so that the first downlink HARQ process delays monitoring, and unnecessary power consumption is avoided.

In one possible implementation, when the second MAC PDU is received in the PDSCH using the first downlink HARQ process, the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is stopped.

In one possible implementation manner, when the terminal receives the PDCCH to instruct the first downlink HARQ process to receive the second MAC PDU during the operation period of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is changed.

The terminal may also instruct, when receiving second indication information sent by the network side device through the PDCCH during operation of the first downlink HARQ process, to use the first downlink HARQ process to receive a second MAC PDU, where the first downlink HARQ process still uses other HARQ to receive the second indication information sent by the network side device through the PDCCH during operation of the first downlink HARQ process, and instruct, according to the second indication information, to use the first downlink HARQ process to receive the second MAC PDU, and at this time, may modify, according to a behavior of the first downlink HARQ process to receive the second MAC PDU, an operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, so that the first downlink HARQ process delays monitoring, and unnecessary power waste is avoided.

In one possible implementation, when the terminal receives the PDCCH, the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is stopped.

In one possible implementation, after completing the feedback transmission for receiving the second MAC PDU using the first downlink HARQ process, a first time symbol is started for the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

In one possible implementation, when the terminal receives the PDCCH and instructs the terminal to receive the second MAC PDU using the first downlink HARQ process, the first retransmission timer dl corresponding to the first downlink HARQ process is stopped.

Fig. 10 is a flowchart of a method for changing a timer state according to an embodiment of the present application, which may be performed by a terminal and a network side device, where the terminal may be the terminal 10 in the network architecture shown in fig. 1, and the network side device may be the base station 20 in the network architecture shown in fig. 1. The method may comprise the steps of:

Step 1001, determining a DRX configuration parameter corresponding to the terminal according to the first configuration information.

Step 1002, when the first downlink HARQ process meets the second condition, changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process. Wherein the first downlink HARQ process is any one of HARQ processes of the terminal.

When the first downlink HARQ process meets the second condition, the terminal can change the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, so that the terminal can update the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process according to the transmission operation executed by using the first downlink HARQ process, the timing function of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is more accurate, the condition that the terminal monitors a PDCCH channel due to the overtime of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is avoided at unnecessary time, the power consumption of the terminal is reduced, the electric quantity of the terminal is saved, and the duration of the terminal is prolonged.

The first downlink HARQ process meets a second condition, that is, the terminal receives a second MAC PDU during the operation period of DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process. At this time, under the condition that the first downlink HARQ process is used for receiving the second MAC PDU, the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process can be changed, the corresponding DRX-HARQ-RTT-TimerDL of the first downlink HARQ process and the current transmission state of the first downlink HARQ process are ensured, the terminal is prevented from monitoring resources at unnecessary moments, the power consumption of the terminal is reduced, the electric quantity of the terminal is saved, and the endurance time of the terminal is prolonged.

When the terminal receives the second MAC PDU on the PDSCH through SPS semi-persistent scheduling and the terminal is in the running period of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is changed in order to ensure that the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process corresponds to the current transmission state of the first downlink HARQ process.

When the terminal uses the first downlink HARQ process and receives the second MAC PDU in the PDSCH through SPS semi-persistent scheduling, after the network side equipment sends the second MAC PDU to the PDSCH, indication signaling is not sent to the terminal through the PDCCH for a period of time, so that the terminal can stop DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process first, and unnecessary power consumption is avoided.

And after the terminal finishes receiving the second MAC PDU through SPS semi-persistent scheduling by using the first downlink HARQ process, using the first downlink HARQ process to perform feedback transmission on the received second MAC PDU so as to inform network side equipment of the completion of the transmission of the second MAC PDU. When the first downlink HARQ process completes the first time symbol after the feedback transmission for receiving the second MAC PDU, it indicates that the transmission operation of the second MAC PDU has been completed, and at this time, the DRX-HARQ-RTT-TimerDL corresponding to the stopped first downlink HARQ process may be restarted, so that the terminal controls the PDCCH monitoring corresponding to the first downlink HARQ process according to the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

Fig. 11 is a schematic flow chart of a method for changing a timer state according to an embodiment of the present application. As shown in fig. 11, which illustrates the terminal 1101 receiving a second MAC PDU transmitted by the network side device 1102 on the PDSCH using a first downlink HARQ process in SPS semi-persistent scheduling. In this process, the terminal 1101 receives a second MAC PDU delivered by the network side device 1102 at a specified time of SPS semi-persistent scheduling configuration. The terminal 1101 starts to receive a second MAC PDU sent by the network side device 1102, and the first retransmission timer dl operates normally, at this time, the terminal may stop the first retransmission timer dl, after receiving the second MAC PDU by using the first downlink HARQ process, may transmit HARQ feedback information to the network side device for receiving the second MAC PDU, and when using the first time symbol after the first downlink HARQ process has sent the HARQ feedback process, start the DRX-HARQ-RTT-timer dl corresponding to the first downlink HARQ process; and when the terminal 1101 starts to receive the second MAC PDU sent by the network side device 1102 and the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process runs normally, the terminal may stop the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, after receiving the second MAC PDU by using the first downlink HARQ process, may transmit HARQ feedback information to the network side device for receiving the second MAC PDU, and when using the first downlink HARQ process to send the first time symbol after the HARQ feedback process is sent, start the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

At this time, the first downlink HARQ process meets the second condition may be that, during operation of the terminal in the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, the terminal receives the PDCCH to instruct to receive the second MAC PDU using the first downlink HARQ process. At this time, when the terminal uses the first downlink HARQ process and receives the second MAC PDU according to the indication of the PDCCH, the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process may be changed, so as to ensure that the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process corresponds to the current transmission state of the first downlink HARQ process, avoid using the first downlink HARQ process to monitor resources at unnecessary moments, reduce power consumption of the terminal, save electric quantity of the terminal, and prolong the endurance time of the terminal.

When the terminal receives the PDCCH and the PDCCH indicates to transmit the first MAC PDU by using the first downlink HARQ process, the terminal can use the first downlink HARQ process to execute the operation of receiving the second MAC PDU according to the indication of the PDCCH, namely when the terminal receives the PDCCH, the terminal starts to execute the operation of receiving the second MAC PDU by using the first downlink HARQ process, and if the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process normally operates, the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process can be stopped when the terminal receives the PDCCH, so that the condition that the terminal monitors resources at unnecessary time due to overtime of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process is avoided.

And when the terminal uses the first downlink HARQ process, and receives the second MAC PDU according to the indication of the PDCCH, using the first downlink HARQ process to perform feedback transmission on the received second MAC PDU so as to inform the network side equipment that the transmission of the second MAC PDU is completed. When the first downlink HARQ process is used for completing the first time symbol after feedback transmission for receiving the second MAC PDU, the transmission operation of the second MAC PDU is completed, and at the moment, the DRX-HARQ-RTT-TimerDL corresponding to the stopped first downlink HARQ process can be restarted, so that the terminal indicates PDCCH monitoring according to the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

Fig. 12 is a flowchart of a method for changing a timer state according to an embodiment of the present application. As shown in fig. 12, it shows that the terminal 1201 receives second indication information in the PDCCH for indicating the first downlink HARQ process to receive the second MAC PDU issued by the network side device 1202, and when the terminal 1201 receives the PDCCH, the terminal 1201 may receive the second MAC PDU issued by the network side device 1202 according to the indication of the PDCCH. In this process, when the terminal 1201 receives the PDCCH and the first retransmission timer dl operates normally, the terminal may stop the first retransmission timer dl, after the terminal uses the first downlink HARQ process to receive the second MAC PDU, may transmit HARQ feedback information to the network side device according to the second MAC PDU, and when the terminal uses the first downlink HARQ process to send a first time symbol after the HARQ feedback process is completed, start the DRX-HARQ-RTT-timer dl corresponding to the first downlink HARQ process; when the terminal 1201 receives the PDCCH and the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process operates normally, the terminal may stop the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process, after the terminal uses the first downlink HARQ process to receive the second MAC PDU, may transmit HARQ feedback information to the network side device for receiving the second MAC PDU, and when the terminal uses the first downlink HARQ process to send a first time symbol after the HARQ feedback process is completed, start the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

Fig. 13 is a flowchart of a timer state change method according to an embodiment of the present application. Fig. 13 shows a state change of the DRX timer by the terminal when the terminal receives the PDCCH and performs data reception according to the PDCCH.

At a time t1, when the terminal receives the PDCCH and the drx-retransmission timer UL corresponding to the first downlink HARQ process is in a starting state, the terminal closes a drx-retransmission timer UL timer corresponding to the first downlink HARQ process; when the terminal receives the PDCCH and the drx-HARQ-RTT-TimerUL corresponding to the first downlink HARQ process is in a starting state, the terminal closes the drx-HARQ-RTT-TimerUL corresponding to the first downlink HARQ process.

At time t2, when the terminal receives the PDCCH, the terminal receives data issued by the network side equipment on the PDSCH indicated by the PDCCH.

At time t3, after the terminal receives the second MAC PDU by using the first downlink HARQ process, the terminal may perform a feedback operation for receiving the second MAC PDU by using the first downlink HARQ process, and after the feedback operation is performed, the terminal starts the drx-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

The communication protocol to which the present application relates is also exemplified as follows:

1> if a MAC PDU is transmitted in a configured uplink grant and LBT failure indication is not received from lower layers:

> stop the drx-HARQ-RTT-TimerUL for the corresponding HARQ process at the first transmission (within a bundle)of the corresponding PUSCH transmission

> start the drx-HARQ-RTT-TimerUL for the corresponding HARQ process in the first symbol after the end of the first transmission(within a bundle)of the corresponding PUSCH transmission；

> stop the drx-RetransmissionTimerUL for the corresponding HARQ process at the first transmission(within a bundle)of the corresponding PUSCH transmission.

2> if a MAC PDU is transmitted in a configured uplink grant and LBT failure indication is not received from lower layers:

> start or restart the drx-HARQ-RTT-TimerUL for the corresponding HARQ process in the first symbol after the end of the first transmission(within a bundle)of the corresponding PUSCH transmission；

> stop the drx-RetransmissionTimerUL for the corresponding HARQ process at the first transmission (within a bundle)of the corresponding PUSCH transmission.

> if the PDCCH indicates a UL transmission:

> stop the drx-HARQ-RTT-TimerUL for the corresponding HARQ process.

> stop the drx-RetransmissionTimerUL for the corresponding HARQ process.

namely, the method for changing the state of the timer corresponding to the uplink HARQ process can further comprise the following steps:

the ue receives a DRX configuration of the network RRC.

2. If the UE transmits a MAC PDU on the CG and does not receive an LBT failure indication from the physical layer, then the UE's behavior includes at least one of:

stopping the drx-HARQ-RTT-TimerUL corresponding to the HARQ process when the first transmission (within one bundle) of the PUSCH transmission is made;

starting a drx-HARQ-RTT-timer ul corresponding to the HARQ process by a first (time) symbol after completing a first transmission (within one bundle) of the PUSCH transmission;

stop the retransmission timer ul corresponding to the HARQ process when the first transmission (within one bundle) of the PUSCH transmission is made.

Alternatively, the behavior of the UE at this time includes at least one of:

starting or restarting a drx-HARQ-RTT-timer ul corresponding to the HARQ process after the first (time) symbol after completing the first transmission (in a bundle) of the PUSCH transmission;

3. If the UE receives the PDCCH indicating uplink transmission, the UE acts as follows:

stopping the drx-HARQ-RTT-timerl corresponding to the HARQ process;

starting a drx-HARQ-RTT-timer ul corresponding to the HARQ process at a first (time symbol) after completing a first transmission (within one bundle) of the PUSCH transmission;

stop the retransmission timer ul corresponding to the HARQ process.

That is, in the above scheme, after receiving the PDCCH indicating the uplink scheduling, the UE stops the drx-HARQ-RTT-timer ul corresponding to the uplink HARQ process. Or after the UE transmits the MAC PDU using CG, the drx-HARQ-RTT-timerl corresponding to the HARQ process is stopped when the first transmission (in one bundle) of the PUSCH transmission is performed, or the drx-HARQ-RTT-timerl corresponding to the HARQ process is started or restarted when the first (time) symbol after the first transmission (in one bundle) of the PUSCH transmission is completed.

1> if a MAC PDU is received in a configured downlink assignment:

> stop the drx-HARQ-RTT-TimerDL for the corresponding HARQ process.2>start the drx-HARQ-RTT-TimerDL for the corresponding HARQ process in the first symbol after the end of the corresponding transmission carrying the DL HARQ feedback；

> stop the drx-RetransmissionTimerDL for the corresponding HARQ process.

2> if the PDCCH indicates a DL transmission:

> stop the drx-HARQ-RTT-TimerDL for the corresponding HARQ process.

> start the drx-HARQ-RTT-TimerDL for the corresponding HARQ process in the first symbol after the end of the corresponding transmission carrying the DL HARQ feedback；

NOTE 3:When HARQ feedback is postponed by PDSCH-to-HARQ_feedback timing indicating a non-numerical k1value,as specified in TS 38.213[6],the corresponding transmission opportunity to send the DL HARQ feedback is indicated in a later PDCCH requesting the HARQ-ACK feedback.

> stop the drx-RetransmissionTimerDL for the corresponding HARQ process.

> if the PDSCH-to-HARQ_feedback timing indicate a non-numerical k1value as specified in TS 38.213[6]:

> start the drx-RetransmissionTimerDL in the first symbol after the PDSCH transmission for the corresponding HARQ process.

namely, the method for changing the state of the timer corresponding to the downlink HARQ can further comprise the following steps:

the ue receives a DRX configuration of the network RRC.

2. If the UE receives a MAC PDU on SPS, the UE behaves as:

stopping the drx-HARQ-RTT-TimerDL corresponding to the HARQ process;

Starting a drx-HARQ-RTT-TimerDL corresponding to the HARQ process by a first (time) symbol after the HARQ feedback transmission for the downlink transmission is completed;

stopping retransmission timerdl corresponding to the HARQ process;

stopping the drx-HARQ-RTT-TimerDL corresponding to the HARQ process;

and stopping the retransmission timer DL corresponding to the HARQ process.

4. When the HARQ feedback is delayed according to the PDSCH-to-HARQ feedback time indication, which indicates a non-numeric k1 value, as specified in TS 38.213, the corresponding transmission occasion to send DL HARQ feedback is indicated in the PDCCH requesting HARQ-ack feedback later;

stopping retransmission timerdl corresponding to the HARQ process;

when PDSCH-to-HARQ feedback time is as specified in TS 38.213, indicating a non-numeric k1 value;

the drx-retransmission timer dl is started in the first symbol after PDSCH transmission of the corresponding HARQ process.

That is, the above scheme describes that the UE stops the drx-HARQ-RTT-TimerDL corresponding to the downlink HARQ process after receiving the PDCCH scheduled under the instruction, or stops the drx-HARQ-RTT-TimerDL corresponding to the downlink HARQ process after receiving the MAC PDU on the SPS.

The following are embodiments of the apparatus according to the present application, and for details not disclosed in the embodiments of the apparatus according to the present application, reference is made to the embodiments of the method according to the present application.

Fig. 14 is a block diagram of a timer state changing apparatus according to an embodiment of the present application. The device has the function of realizing the timer state changing method. As shown in fig. 14, during operation of an uplink discontinuous reception hybrid automatic repeat request round trip time timer DRX-HARQ-RTT-timer ul corresponding to a first uplink hybrid automatic repeat request HARQ process of the apparatus, the apparatus may include:

a first timer changing module 1401, configured to, when the transmission of the apparatus meets a first condition, change an operation state of DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process.

In one possible implementation, in case the apparatus transmits a first medium access control protocol data unit MAC PDU, the first timer modification module 1401 is further configured to,

changing the running state of DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process;

wherein the first MAC PDU is a MAC PDU transmitted using the first uplink HARQ process.

In one possible implementation, in the case where N repeated transmissions of the first MAC PDU are made on the physical uplink shared control channel PUSCH without authorization through CG and no listen before talk LBT failure indication sent by the physical layer is received, the first timer modification module 1401 is further configured to,

And changing the running state of the DRX-HARQ-RTT-TimerUL.

In one possible implementation, when the first retransmission of the PUSCH transmission corresponding to the first MAC PDU is performed using the first uplink HARQ process, the first timer modification module 1401 is further configured to,

stopping the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.

In one possible implementation, the first timer modification module 1401 is further configured to, after completing, using the first uplink HARQ process, a first time symbol after a first retransmission of a PUSCH transmission corresponding to the first MAC PDU, further,

and starting or restarting the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.

In one possible implementation, in case the apparatus receives the PDCCH indicating that the first MAC PDU is transmitted using the first uplink HARQ process, the first timer modification module 1401 is further configured to,

and changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.

In one possible implementation, when the device receives the PDCCH, the first timer modification module 1401 is further configured to,

In one possible implementation, the apparatus further includes:

and the first starting module starts the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.

In summary, in the scheme of the embodiment of the present application, when the DRX-HARQ-RTT-Timer ul corresponding to the first uplink HARQ process of the terminal runs and the transmission process of the terminal meets the first condition, the network side device may not issue the PDCCH to the terminal in a period of time when the transmission occurs, and the terminal does not need to monitor the PDCCH at this time, so that the terminal may change the running state of the DRX-HARQ-RTT-Timer ul corresponding to the first uplink HARQ process, for example, by stopping or restarting, the next timeout time of RTT is reasonably prolonged, so that unnecessary monitoring caused by the timeout of the DRX-HARQ-RTT-Timer by the terminal is reduced, power consumption of the terminal is reduced, and electric quantity of the terminal is saved.

Fig. 15 shows a block diagram of a timer state changing device according to an embodiment of the present application. The device has the function of realizing the timer state changing method. As shown in fig. 15, during operation of a downlink discontinuous reception hybrid automatic repeat request round trip time timer DRX-HARQ-RTT-TimerDL corresponding to a first downlink hybrid automatic repeat request HARQ process of the apparatus, the apparatus includes:

A second timer changing module 1501, configured to change an operation state of DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process when the transmission of the apparatus satisfies a second condition.

In one possible implementation, in case of receiving a second medium access control protocol data unit MAC PDU, the second timer modification module 1501 is further configured to,

changing the running state of DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process;

wherein the second MAC PDU is a MAC PDU transmitted using the first downlink HARQ process.

In one possible implementation, in case of receiving a second MAC PDU, and in case of receiving the second MAC PDU on the physical downlink shared channel PDSCH through the semi-persistent scheduling SPS, the second timer modification module 1501 is further configured to,

and changing the running state of the DRX-HAR Q-RTT-TimerDL corresponding to the first downlink HARQ process.

In one possible implementation, when the second MAC PDU is received in the PDSCH using the first downlink HARQ process, the second timer modification module 1501 is further configured to,

stopping the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

In one possible implementation, in case the device receives the PDCCH indicating that a second MAC PDU is received using the first uplink HARQ process, the second timer modification module 1501 is further configured to,

and changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

In one possible implementation, when the device receives the PDCCH, the second timer modification module 1501 is also configured to,

In one possible implementation, the apparatus further includes:

and the second starting module is used for starting the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 16 shows a schematic structural diagram of a communication device 1600 according to an embodiment of the present application. The communication device 1600 may include: a processor 1601, a receiver 1602, a transmitter 1603, a memory 1604, and a bus 1605.

The processor 1601 includes one or more processing cores, and the processor 1601 executes various functional applications and information processing by running software programs and modules.

The receiver 1602 and the transmitter 1603 may be implemented as one communication component, which may be a communication chip. The communication chip may also be referred to as a transceiver.

The memory 1604 is connected to the processor 1601 by way of a bus 1605.

The memory 1604 may be used for storing a computer program, and the processor 1601 is configured to execute the computer program to implement the steps performed by the server device, the configuration device, the cloud platform, or the account server in the above method embodiment.

Further, the memory 1604 may be implemented by any type of volatile or nonvolatile memory device or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, static random access memory, read-only memory, magnetic memory, flash memory, programmable read-only memory.

In an exemplary embodiment, the computer device includes a processor, a memory, and a transceiver (which may include a receiver for receiving information and a transmitter for transmitting information);

in one possible implementation, when the computer device is implemented as a terminal, the terminal includes a processor, a memory, and a transceiver;

the processor changes an operation state of the DRX-HARQ-RTT-TimerUL corresponding to a first uplink HARQ process of the terminal under the condition that transmission of the terminal meets a first condition during the operation of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the terminal.

the processor is configured to change an operation state of DRX-HARQ-RTT-TimerDL corresponding to a first downlink HARQ process of the terminal when the transmission with the terminal satisfies a second condition during operation of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.

The processor and transceiver in the terminal according to the embodiments of the present application may execute steps executed by the terminal in any of the methods shown in fig. 3, fig. 4, fig. 8, and fig. 9, which are not described herein.

Embodiments of the present application also provide a computer readable storage medium having a computer program stored therein, the computer program being loaded and executed by a processor to implement the steps of the timer state change method shown in fig. 2 or fig. 4 described above.

The present application also provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium and executes the computer instructions to cause the computer device to perform the steps of the timer state change method described above in any of fig. 3, 4, 8, and 9.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing description of the exemplary embodiments of the application is not intended to limit the application to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application.

Claims

A method for changing a state of a timer, the method being performed by a terminal, the method comprising:

and changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process under the condition that the transmission of the terminal meets a first condition during the running of the uplink discontinuous reception hybrid automatic repeat request round-trip time timer DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the terminal.
The method of claim 1, wherein changing the operation state of the DRX-HARQ-RTT-timerl corresponding to the first uplink HARQ process if the transmission of the terminal satisfies a first condition comprises:

changing the running state of DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process under the condition that the terminal transmits a first media access control protocol data unit (MAC PDU);

wherein the first MAC PDU is a MAC PDU transmitted using the first uplink HARQ process.
The method according to claim 2, wherein changing the operation state of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process in the case that the terminal transmits the first MAC PDU includes:

and under the condition that the first MAC PDU is repeatedly transmitted for N times on a physical uplink shared control channel (PUSCH) through CG authorization-free and the Listen Before Talk (LBT) failure indication sent by a physical layer is not received, the running state of the DRX-HARQ-RTT-TimerUL is changed.
The method of claim 3, wherein the changing the operation state of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process comprises:

And stopping DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process when the first uplink HARQ process is used for executing the first repeated transmission of the PUSCH transmission corresponding to the first MAC PDU.
The method of claim 3, wherein the changing the operation state of the DRX-HARQ-RTT-timer ul corresponding to the first uplink HARQ process comprises:

and starting or restarting the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process after the first uplink HARQ process is used for completing the first time symbol after the first repeated transmission of the PUSCH corresponding to the first MAC PDU.
The method according to claim 2, wherein said changing the operation state of the DRX-HARQ-RTT-timer ul in case the terminal transmits the first MAC PDU, comprises:

and under the condition that the terminal receives the PDCCH to instruct the first MAC PDU to be transmitted by using the first uplink HARQ process, changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.
The method of claim 6, wherein the changing the operating state of the DRX-HARQ-RTT-timer ul comprises:

And stopping the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process when the terminal receives the PDCCH.
The method according to claim 4 or 7, characterized in that the method further comprises:

and starting the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process after the first uplink HARQ process is used for finishing the first time symbol after the first repeated transmission of the PUSCH corresponding to the first MAC PDU.
A method for changing a state of a timer, the method being performed by a terminal, the method comprising:

and changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process under the condition that the transmission of the terminal meets a second condition during the running period of the downlink discontinuous reception hybrid automatic repeat request round-trip time timer DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process of the terminal.
The method of claim 9, wherein the changing the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process if the first downlink HARQ process satisfies the second condition includes:

Changing the running state of DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process under the condition of receiving a second media access control protocol data unit (MAC PDU);

wherein the second MAC PDU is a MAC PDU transmitted using the first downlink HARQ process.
The method of claim 10, wherein the changing the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process in the case of receiving the second MAC PDU comprises:

and under the condition that the second MAC PDU is received on a physical downlink shared channel PDSCH through a semi-persistent scheduling SPS, changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.
The method of claim 11, wherein the changing the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process comprises:

and stopping DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process when the second MAC PDU is received in the PDSCH by using the first downlink HARQ process.
The method of claim 10, wherein changing the operating state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process in the case of receiving the second MAC PDU comprises:

And under the condition that the terminal receives a physical downlink control channel PDCCH to instruct the first uplink HARQ process to receive a second MAC PDU, changing the running state of DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.
The method of claim 13, wherein the changing the operation state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process comprises:

and stopping the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process when the terminal receives the PDCCH.
The method according to claim 12 or 14, characterized in that the method further comprises:

and starting a DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process after the first downlink HARQ process finishes feedback transmission for receiving the second MAC PDU.
A timer state changing apparatus, wherein during an uplink discontinuous reception hybrid automatic repeat request round-trip time timer DRX-HARQ-RTT-timer ul operation corresponding to a first uplink hybrid automatic repeat request HARQ process of the apparatus, the apparatus comprises:

and the first timer changing module is used for changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process under the condition that the transmission of the device meets a first condition.
The apparatus of claim 16, wherein the first timer modification module is further configured to,

changing the running state of DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process;

wherein the first MAC PDU is a MAC PDU transmitted using the first uplink HARQ process.
The apparatus of claim 17, wherein the first timer modification module is further configured to, in the event that N repeated transmissions of the first MAC PDU are made on a physical uplink shared control channel PUSCH without authorization by a CG and no listen before talk LBT failure indication sent by a physical layer is received,

and changing the running state of the DRX-HARQ-RTT-TimerUL.
The apparatus of claim 18, wherein the first timer modification module is further configured to, when performing a first retransmission of the PUSCH transmission corresponding to the first MAC PDU using the first uplink HARQ process,

stopping the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.
The apparatus of claim 18, wherein the first timer modification module is further configured to,

And starting or restarting the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.
The apparatus of claim 17, wherein the first timer modification module is further configured to, if the apparatus receives the PDCCH indicating transmission of the first MAC PDU using the first uplink HARQ process,

and changing the running state of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.
The apparatus of claim 21, wherein the first timer modification module is further configured to, when the apparatus receives the PDCCH,

stopping the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.
The apparatus according to claim 19 or 22, characterized in that the apparatus further comprises:

and the first starting module starts the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process.
A timer state changing apparatus, wherein during a downlink discontinuous reception hybrid automatic repeat request round trip time timer DRX-HARQ-RTT-TimerDL operation corresponding to a first downlink hybrid automatic repeat request HARQ process of the apparatus, the apparatus comprises:

and the second timer changing module is used for changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process under the condition that the transmission of the device meets a second condition.
The apparatus of claim 24, wherein the second timer modification module is further configured to, in the event that a second medium access control protocol data unit, MAC PDU, is received,

changing the running state of DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process;

wherein the second MAC PDU is a MAC PDU transmitted using the first downlink HARQ process.
The apparatus of claim 25, wherein the second timer modification module is further configured to, in the case of receiving a second MAC PDU and in the case of receiving the second MAC PDU on a physical downlink shared channel, PDSCH, via a semi-persistent scheduling, SPS,

and changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.
The apparatus of claim 26, wherein the second timer modification module is further configured to, when the second MAC PDU is received in the PDSCH using the first downlink HARQ process,

stopping the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.
The apparatus of claim 25, wherein the second timer modification module is further configured to, if the apparatus receives the PDCCH indicating that a second MAC PDU was received using the first uplink HARQ process,

And changing the running state of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.
The apparatus of claim 28, wherein the second timer modification module is further configured to, when the apparatus receives the PDCCH,

stopping the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.
The apparatus according to claim 27 or 29, characterized in that the apparatus further comprises:

and the second starting module is used for starting the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process.
A terminal comprising a processor, a memory, and a transceiver;

the processor changes the running state of a downlink discontinuous reception hybrid automatic repeat request round-trip time timer DRX-HARQ-RTT-TimerUL corresponding to a first uplink HARQ process of the terminal under the condition that the transmission of the terminal meets a first condition during the running of the DRX-HARQ-RTT-TimerUL corresponding to the first uplink HARQ process of the terminal.
A terminal comprising a processor, a memory, and a transceiver;

the processor is configured to change an operation state of a downlink discontinuous reception hybrid automatic repeat request round trip time timer DRX-HARQ-RTT-TimerDL corresponding to a first downlink HARQ process of the terminal when transmission of the terminal meets a second condition during operation of the DRX-HARQ-RTT-TimerDL corresponding to the first downlink HARQ process of the terminal.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor to implement the timer state change method of any one of claims 1 to 15.