CN114303424B

CN114303424B - Signal transmission method and device and terminal equipment

Info

Publication number: CN114303424B
Application number: CN201980099349.6A
Authority: CN
Inventors: 石聪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2024-03-08
Anticipated expiration: 2039-10-10
Also published as: WO2021068173A1; CN114303424A

Abstract

The embodiment of the application provides a signal transmission method and device and terminal equipment, wherein the method comprises the following steps: the terminal equipment determines a first offset of the time of the wake-up signal relative to the reference time; the first offset is less than or equal to a first threshold; the terminal equipment judges whether the second moment is in DRX activation time or not at the first moment; the first moment is earlier than the second moment, and the time interval between the first moment and the second moment is greater than or equal to the first threshold value; if the second moment is in the DRX activation time, the terminal equipment estimates that a target signal needs to be transmitted at the second moment; and if the second moment is not in the DRX activation time, the terminal equipment does not transmit a target signal at the second moment.

Description

Signal transmission method and device and terminal equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a signal transmission method and device and terminal equipment.

Background

In the fifth generation (5 ^th The Generation, 5G) New Radio (NR) system, the network may configure a discontinuous reception (Discontinuous Reception, DRX) function for the terminal device, so that the terminal device discontinuously monitors a physical downlink control channel (Physical Downlink Control Channel, PDCCH) to achieve the purpose of power saving of the terminal device.

DRX activation Time (Active Time) is an important concept of the DRX function, and if the terminal device configures the DRX function, the terminal device needs to monitor the PDCCH at the DRX activation Time. On the other hand, the terminal device needs to advance by a certain time (e.g. 4 ms) to determine whether a certain symbol (symbol) is in DRX active time, and further determine whether to transmit channel state information (Channel State Information, CSI)/sounding reference signal (Sounding Reference Signal, SRS). However, the introduction of the wake-up signal may have an effect on determining whether symbol is in DRX active time, resulting in uncertainty in reporting CSI/SRS.

Disclosure of Invention

The embodiment of the application provides a signal transmission method and device and terminal equipment.

The signal transmission method provided by the embodiment of the application comprises the following steps:

the terminal equipment determines a first offset of the time of the wake-up signal relative to the reference time; the first offset is less than or equal to a first threshold;

the terminal equipment judges whether the second moment is in DRX activation time or not at the first moment; the first moment is earlier than the second moment, and the time interval between the first moment and the second moment is greater than or equal to the first threshold value;

If the second moment is in the DRX activation time, the terminal equipment estimates that a target signal needs to be transmitted at the second moment; and if the second moment is not in the DRX activation time, the terminal equipment does not transmit a target signal at the second moment.

the terminal equipment determines a first offset of the time of the wake-up signal relative to the reference time; the first offset is greater than or equal to a first threshold;

if the second moment is in the DRX activation time, the terminal equipment transmits a target signal at the second moment; and if the second moment is not in the DRX activation time, the terminal equipment does not transmit a target signal at the second moment.

The signal transmission device provided by the embodiment of the application comprises:

a determining unit, configured to determine a first offset of a time of the wake-up signal with respect to a reference time; the first offset is less than or equal to a first threshold;

A judging unit, configured to judge, at a first time, whether a second time is in a DRX activation time; the first moment is earlier than the second moment, and the time interval between the first moment and the second moment is greater than or equal to the first threshold value;

a processing unit, configured to estimate that a target signal needs to be transmitted at the second time if the second time is at the DRX activation time; and if the second moment is not in the DRX activation time, not transmitting the target signal at the second moment.

a determining unit, configured to determine a first offset of a time of the wake-up signal with respect to a reference time; the first offset is greater than or equal to a first threshold;

a processing unit, configured to transmit a target signal at the second time if the second time is at the DRX activation time; and if the second moment is not in the DRX activation time, not transmitting the target signal at the second moment.

The terminal equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the signal transmission method.

The chip provided by the embodiment of the application is used for realizing the signal transmission method.

Specifically, the chip includes: and a processor for calling and running the computer program from the memory, so that the device mounted with the chip executes the signal transmission method.

The computer readable storage medium provided in the embodiments of the present application is used for storing a computer program, where the computer program makes a computer execute the signal transmission method described above.

The computer program product provided by the embodiment of the application comprises computer program instructions, wherein the computer program instructions enable a computer to execute the signal transmission method.

The computer program provided in the embodiments of the present application, when executed on a computer, causes the computer to perform the signal transmission method described above.

Through the technical scheme, when the terminal equipment is configured with the wake-up signal (Wake Up Signalling, WUS), the terminal equipment judges whether the second moment (such as symbol n) is in the DRX activation time or not in advance by a certain time interval, and the terminal equipment considers the factor of the wake-up signal to determine whether to report the target signal (such as CSI and/or SRS) or not, so that when the wake-up signal is introduced, whether the second moment is in the DRX activation time or not and whether to report the target signal or not can be clarified.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a DRX cycle provided in an embodiment of the present application;

FIG. 3 is a first time chart provided in an embodiment of the present application;

fig. 4 is a flowchart of a signal transmission method according to an embodiment of the present application;

FIG. 5 is a second timing diagram according to an embodiment of the present disclosure;

fig. 6 is a second flowchart of a signal transmission method according to an embodiment of the present application;

FIG. 7 is a third time schematic provided by an embodiment of the present application;

fig. 8 is a schematic diagram of the structural components of a signal transmission device according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram ii of a structural composition of a signal transmission device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 11 is a schematic block diagram of a chip of an embodiment of the present application;

fig. 12 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), systems, 5G communication systems, future communication systems, or the like.

Exemplary, a communication system 100 to which embodiments of the present application apply is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Alternatively, the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in the LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.

The communication system 100 further includes at least one terminal 120 located within the coverage area of the network device 110. "terminal" as used herein includes, but is not limited to, connection via wireline, such as via public-switched telephone network (Public Switched Telephone Networks, PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and/or means of the other terminal arranged to receive/transmit communication signals; and/or internet of things (Internet of Things, ioT) devices. Terminals arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network or a terminal in a future evolved PLMN, etc.

Alternatively, direct to Device (D2D) communication may be performed between the terminals 120.

Alternatively, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

Fig. 1 illustrates one network device and two terminals, alternatively, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within a coverage area, which is not limited in this embodiment.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 with communication functions, where the network device 110 and the terminal 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the technical solutions related to the embodiments of the present application.

5G NR DRX

In 5G NR, the network may configure a DRX function for the terminal device, so that the terminal device discontinuously monitors the PDCCH, so as to achieve the purpose of power saving of the terminal device. Specifically, each medium access control (Medium Access Control, MAC) entity has a DRX configuration, and parameters included in the DRX configuration are as follows:

-drx-onDurationTimer: for indicating the duration of the terminal device waking up from the start time of one DRX Cycle.

-drx-SlotOffset: and the delay is used for indicating the terminal equipment to start the drx-onduration timer.

-drx-inactivatytimer: and the duration time is used for indicating that the terminal equipment continues to monitor the PDCCH after the terminal equipment receives the PDCCH indicating the uplink initial transmission or the downlink initial transmission.

-drx-retransmission timerdl: for instructing the terminal device to monitor the longest duration of the PDCCH indicating the downlink retransmission schedule. Further, each downlink hybrid automatic repeat request (HARQ) process except for the broadcast Hybrid Automatic Repeat reQuest HARQ process corresponds to one drx-retransmission timerdl.

-drx-retransmission timer ul: for instructing the terminal device to monitor the longest duration of the PDCCH indicating the uplink retransmission schedule. Further, each uplink HARQ process corresponds to one drx-retransmission TimerUL.

-drx-LongCycleStartOffset: for configuring a Long DRX cycle (Long DRX cycle), and a subframe offset between a start time of the Long DRX cycle and a start time of a short DRX cycle (short DRX cycle).

-drx-ShortCycle: the method is used for configuring the Short DRX cycle and is optional.

-drx-ShortCycleTimer: the duration for indicating that the terminal device is in the short drx cycle (and does not receive any PDCCH) is an optional configuration.

-drx-HARQ-RTT-TimerDL: for indicating the minimum waiting time required for the terminal device to expect to receive the PDCCH indicating the downlink scheduling. Further, each downlink HARQ process except for the broadcast HARQ process corresponds to one drx-HARQ-RTT-TimerDL.

-drx-HARQ-RTT-TimerUL: for indicating the minimum waiting time required for the terminal device to expect to receive the PDCCH indicating the uplink scheduling. Further, each uplink HARQ process corresponds to one drx-HARQ-RTT-TimerUL.

If the terminal device configures DRX, the terminal device needs to monitor PDCCH at the DRX activation time. The determination of DRX activation time includes the following cases:

1) DRX-onDurationTimer, DRX-InactivityTimer, DRX-RetransmissionTimerDL, DRX-retransmission timer ul and ra-contentioresolute, any one of these 5 timers being a DRX active time during operation.

2) The period in which the terminal device has transmitted a scheduling request (Scheduling Request, SR) on the physical uplink control channel (Physical Uplink Control Channel, PUCCH) and is in the suspended (pending) state is DRX activation time.

3) In the contention-based random access procedure, the period during which the terminal device has not received one initial transmission of a Cell radio network temporary identity (Cell-Radio Network Tempory Identity, C-RNTI) scrambled PDCCH indication after successful reception of the random access response is DRX activation time.

The terminal device decides the time for starting the DRX-onduration timer according to whether the terminal device is currently in the short DRX cycle or the long DRX cycle, and specifically specifies the following steps:

1> if short DRX cycle is used, and the current subframe satisfies [ (sfn×10) +subframe number ] module (DRX-short) = (DRX-StartOffset) module (DRX-short cycle); alternatively, if Long DRX Cycle is used and the current subframe satisfies [ (sfn×10) +subframe number ] module (DRX-LongCycle) =drx-StartOffset:

2> drx-onDurationTimer is started at a time instant after the drx-SlotOffset time slot (slot) at the beginning of the current subframe. Among them, DRX cycle and DRX activation time (also referred to as Duration (On Duration)) are shown in fig. 2.

Transmission of CSI and SRS

The transmission of CSI may also be referred to as reporting of CSI, and the transmission of SRS may also be referred to as transmission of SRS. Referring to fig. 3, the following is provided for reporting CSI and SRS transmission: the terminal device determines whether SRS is to be transmitted and CSI is to be reported at symbol n, assuming that symbol n is at DRX active time based on a time advanced by 4ms, which may be referred to as DRX uncertainty period (DRX ambiguity period). That is, the terminal device judges whether symbol n is the DRX activation time 4ms in advance, and if symbol n is not the DRX activation time, the terminal device does not transmit CSI/SRS.

The event that the terminal device judges whether the CSI/SRS is reported in advance depends on: uplink scheduling (grant) messages, downlink scheduling or downlink assignment (assignments) messages, DRX command MAC CE (DRX Command MAC CE), long DRX command MAC CE (Long DRX Command MAC CE), and scheduling request messages.

It should be noted that, determining whether symbol n is the DRX activation time by 4ms is mainly considered that in the NR system, the minimum time from when the terminal device receives the physical downlink shared channel (Physical Downlink Share Channel, PDSCH) to when feedback to the PDSCH is fixed is 3ms, and for the compromise, the time of advance is set to 4ms, that is, 4ins is enough for the terminal device to determine whether the PDCCH is successfully detected, and whether the PDSCH is successfully detected.

Wake-up signal

In NR, the concept of a wake-up signal is introduced, which may also be referred to as a power saving signal (power saving signal). Specifically, before the terminal device starts the drx-onduration timer, the terminal device performs blind detection on the PDCCH for carrying the wake-up signal (which may also be referred to as PDCCH-WUS (PDCCH-based power saving signalling)) at a fixed time (the time has an offset from the start time of the drx-onduration timer), and if the terminal device detects PDCCH-WUS and the PDCCH-WUS indicates that the terminal device starts the drx-onduration timer, or otherwise the terminal device does not start the drx-onduration timer.

The introduction of PDCCH-WUS has an effect on the terminal device determining whether a certain symbol (assumed to be symbol) is in DRX active time, since the offset of the PDCCH-WUS configuration is not finalized, the offset may be greater than 4ms, and may be less than 4ms. If the offset is greater than 4ms, the terminal device does not determine whether symbol n is DRX activation time based on PDCCH-WUS; if the offset is less than 4ms, the terminal device should consider an indication of PDCCH-WUS in determining whether symbol n is the DRX activation time. In addition, when the network indicates that the terminal equipment does not need to start the drx-ondurationTimer through the PDCCH-WUS, whether the terminal equipment needs to report the CSI/SRS also needs to be clear. For this reason, the following technical solutions of the embodiments of the present application are proposed.

Fig. 4 is a flowchart of a signal transmission method according to an embodiment of the present application, as shown in fig. 4, where the signal transmission method includes the following steps:

step 401: the terminal equipment determines a first offset of the time of the wake-up signal relative to the reference time; the first offset is less than or equal to a first threshold.

In the embodiment of the present application, the wake-up signal may also be referred to as a power saving signal. In an embodiment, the wake-up signal is carried in the PDCCH, based on which the wake-up signal may also be referred to as PDCCH-WUS.

In an optional embodiment of the present application, the configuration of the wake-up signal at least includes: a first offset. The first offset is used to indicate an offset of a time of the wake-up signal relative to a reference time. Further optionally, the reference time is a start time of a first timer, and the first timer is a DRX activation time during running. In a specific implementation, the first timer is a drx-ondurationTimer.

In this embodiment of the present application, the first offset is less than or equal to a first threshold. In an alternative embodiment, the first threshold is 4ms.

Step 402: the terminal equipment judges whether the second moment is in DRX activation time or not at the first moment; the first time is earlier than the second time, and a time interval between the first time and the second time is greater than or equal to the first threshold.

In this embodiment of the present application, the terminal device determines, at a first time before a second time, whether the second time is in DRX activation time. Here, the time interval between the first time and the second time is greater than or equal to the first threshold, and in an alternative embodiment, the first threshold is 4ms.

In an optional embodiment of the present application, the terminal device determines whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command MAC CE, long DRX command MAC CE and scheduling request information. Further, the terminal device determines whether to transmit the target signal under the condition that the wake-up signal is defaulted to indicate to start a first timer, wherein the running period of the first timer is DRX activation time. In a specific implementation, the first timer is a drx-ondurationTimer.

Step 403: if the second moment is in the DRX activation time, the terminal equipment estimates that a target signal needs to be transmitted at the second moment; and if the second moment is not in the DRX activation time, the terminal equipment does not transmit a target signal at the second moment.

Here, the terminal device estimates that in the case where the transmission of the target signal is required at the second timing, the terminal device performs a preparatory operation to transmitting the target signal, for example, prepares to assemble the target signal.

In an alternative embodiment of the present application, the target signal includes at least one of: CSI, SRS.

Further, the CSI includes at least one of: CSI periodically transmitted on PUCCH, CSI semi-statically transmitted on PUSCH.

Further, the SRS includes at least one of: periodic SRS, semi-static SRS.

In particular, referring to fig. 5, it is assumed that the second time is the symbol n, and the time interval between the first time and the second time (i.e., the DRX uncertainty period) is 4ms, i.e., the first time is 4ms earlier than the second time. The first offset of the time of the wake-up signal relative to the reference time is less than 4ms. The terminal device determines whether symbol n is at DRX activation time needs to be advanced by at least 4ms (i.e. before the first time) taking into account the following events:

a. at least one of the following received by the terminal device: uplink scheduling (grant) messages, downlink scheduling (assignments) messages, DRX Command MAC CE, long DRX Command MAC CE, and scheduling request messages sent by the terminal device.

b. The terminal device assumes that the wake-up signal indicates to start a first timer, here, a drx-ondurationTimer.

● Based on the events of the above a and b, if the terminal device determines that the symbol n is at the DRX activation time at the first time, the terminal device estimates that the target signal is transmitted at the symbol n, and starts to perform the preparation operation of the target signal.

Here, the terminal device decides, during the preparation of the target signal, in combination with the actual received wake-up signal, whether to discard (or ignore) the transmission of the target signal at the second instant. Specifically, three cases are given below for illustration.

Case one: if the terminal equipment detects the wake-up signal at the third moment and the wake-up signal indicates that the first timer is not started at the second moment, the terminal equipment does not transmit a target signal at the second moment; wherein the third time is later than the first time and earlier than the second time; the first timer running period is DRX activation time.

Specifically, referring to fig. 5, the third time is the configured wake-up signal time, if the terminal device detects the wake-up signal at the configured wake-up signal time and the wake-up signal indicates that the terminal device does not start the drx-onduration timer at the symbol n time, the terminal device may not report CSI (including CSI periodically transmitted on PUCCH and/or semi-static CSI transmitted on PUSCH) at the symbol n position, and may not need to transmit SRS (including periodic SRS and semi-static SRS).

It should be noted that, the wake-up signal indicates that the terminal device does not start the drx-onduration timer at the time of the symbol n, which may also be understood that the wake-up signal indicates that the terminal device does not start the drx-onduration timer including the symbol n, where the drx-onduration timer including the symbol n means that the drx-onduration timer includes the symbol n during operation.

And a second case: if the terminal equipment does not detect the wake-up signal at the third moment and the terminal equipment does not start the first timer at the second moment, the terminal equipment does not transmit a target signal at the second moment; wherein the third time is later than the first time and earlier than the second time; the first timer running period is DRX activation time.

Specifically, referring to fig. 5, the third time is the configured wake-up signal time, if the terminal device does not detect the wake-up signal at the configured wake-up signal time and the terminal device does not start the drx-onduration timer at the symbol n time, the terminal device may not report CSI (including CSI periodically transmitted on PUCCH and/or semi-static CSI transmitted on PUSCH) at the symbol n position, and may not need to transmit SRS (including periodic SRS and semi-static SRS).

And a third case: if the terminal equipment detects the wake-up signal at the third moment and the wake-up signal indicates that the target signal is not transmitted at the second moment, the terminal equipment does not transmit the target signal at the second moment; wherein the third time is later than the first time and earlier than the second time; the first timer running period is DRX activation time.

Specifically, referring to fig. 5, the third time is the configured wake-up signal time, if the terminal device detects the wake-up signal at the configured wake-up signal time, and the wake-up signal indicates that the terminal device does not need to report CSI and does not need to transmit SRS at the symbol n time, the terminal device may not need to report CSI (including CSI periodically transmitted on PUCCH and/or semi-static CSI transmitted on PUSCH) and does not need to transmit SRS (including periodic SRS and semi-static SRS) at the symbol n position.

● Based on the events of a and b, if the terminal device determines that the symbol n is not in the DRX activation time at the first time, the terminal device may not need to report CSI (including CSI periodically transmitted on PUCCH and/or semi-static CSI transmitted on PUSCH) at the position of the symbol n, and does not need to transmit SRS (including periodic SRS and semi-static SRS).

Fig. 6 is a second flow chart of a signal transmission method according to an embodiment of the present application, as shown in fig. 6, where the signal transmission method includes the following steps:

step 601: the terminal equipment determines a first offset of the time of the wake-up signal relative to the reference time; the first offset is greater than or equal to a first threshold.

In this embodiment of the present application, the first offset is greater than or equal to a first threshold. In an alternative embodiment, the first threshold is 4ms.

Step 602: the terminal equipment judges whether the second moment is in DRX activation time or not at the first moment; the first time is earlier than the second time, and a time interval between the first time and the second time is greater than or equal to the first threshold.

In an optional embodiment of the present application, the terminal device determines whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command MAC CE, long DRX command MAC CE and scheduling request information.

In this embodiment of the present application, the terminal device determines, according to a case of an actually received wake-up signal, whether the second moment is at the DRX activation time. The following is an example.

Case one: the terminal equipment does not detect the wake-up signal at a third moment, the terminal equipment does not start a first timer, and the terminal equipment determines that the second moment is not in DRX activation time; wherein the third time is earlier than or equal to the first time; the first timer running period is DRX activation time.

And a second case: the terminal equipment detects the wake-up signal at a third moment, and the wake-up signal indicates to start a first timer, so that the terminal equipment determines that the second moment is in DRX activation time; wherein the third time is earlier than or equal to the first time; the first timer running period is DRX activation time.

Step 603: if the second moment is in the DRX activation time, the terminal equipment transmits a target signal at the second moment; and if the second moment is not in the DRX activation time, the terminal equipment does not transmit a target signal at the second moment.

Further, the SRS includes at least one of: periodic SRS, semi-static SRS.

In particular, referring to fig. 7, it is assumed that the second time is the symbol n, and the time interval between the first time and the second time (i.e., the DRX uncertainty period) is 4ms, i.e., the first time is 4ms earlier than the second time. The first offset of the time of the wake-up signal relative to the reference time is greater than 4ms. The terminal device determines whether symbol n is at DRX activation time needs to be advanced by at least 4ms (i.e. before the first time) taking into account the following events:

c. at least one of the following received by the terminal device: uplink scheduling (grant) messages, downlink scheduling (assignments) messages, DRX Command MAC CE, long DRX Command MAC CE, and scheduling request messages sent by the terminal device.

d. And the terminal equipment receives the wake-up signal.

Here, i) if the terminal device does not receive the wake-up signal, the terminal device does not start the DRX-ondurationTimer, and determines that the symbol n is not in the DRX activation time. Or ii) if the terminal equipment receives the wake-up signal and the wake-up signal indicates the terminal equipment to start the DRX-onduration timer (or indicates the terminal equipment to monitor the PDCCH), the terminal equipment starts the DRX-onduration timer at the start time of the DRX-onduration timer, and determines that the symbol n is at the DRX activation time.

● Based on the events of c and d, if the terminal device determines that the symbol n is at the DRX activation time at the first time, the terminal device reports CSI (including CSI periodically transmitted on PUCCH and/or semi-static CSI transmitted on PUSCH) at the position of the symbol n, and transmits SRS (including periodic SRS and semi-static SRS).

● Based on the events of c and d, if the terminal device determines that the symbol n is not in the DRX activation time at the first time, the terminal device may not need to report CSI (including CSI periodically transmitted on PUCCH and/or semi-static CSI transmitted on PUSCH) at the position of the symbol n, and does not need to transmit SRS (including periodic SRS and semi-static SRS).

According to the technical scheme, the terminal equipment determines whether to transmit the target signal or not based on the wake-up signal, so that the terminal equipment can realize that the target signal is not transmitted when the wake-up signal indicates that the terminal equipment does not start the drx-on duration timer or when the terminal equipment does not detect the wake-up signal, and the purpose of saving electricity can be achieved.

Fig. 8 is a schematic structural diagram of a signal transmission device according to an embodiment of the present application, as shown in fig. 8, where the signal transmission device includes:

a determining unit 801, configured to determine a first offset of a time of the wake-up signal with respect to a reference time; the first offset is less than or equal to a first threshold;

a judging unit 802, configured to judge, at the first moment, whether the second moment is at the DRX activation time; the first moment is earlier than the second moment, and the time interval between the first moment and the second moment is greater than or equal to the first threshold value;

a processing unit 803, configured to estimate that, if the second time is at the DRX activation time, a target signal needs to be transmitted at the second time; and if the second moment is not in the DRX activation time, not transmitting the target signal at the second moment.

In an optional embodiment, the processing unit 803 is further configured to, if the wake-up signal is detected at a third time, and the wake-up signal indicates that the first timer is not started at the second time, not transmit the target signal at the second time;

wherein the third time is later than the first time and earlier than the second time; the first timer running period is DRX activation time.

In an alternative embodiment, the processing unit 803 is further configured to, if the wake-up signal is not detected at a third time, and the first timer is not started at the second time, not transmit a target signal at the second time; wherein the third time is later than the first time and earlier than the second time; the first timer running period is DRX activation time.

In an alternative embodiment, the processing unit 803 is further configured to, if the wake-up signal is detected at a third time, and the wake-up signal indicates that the target signal is not transmitted at the second time, not transmit the target signal at the second time; wherein the third time is later than the first time and earlier than the second time; the first timer running period is DRX activation time.

In an alternative embodiment, the reference time is a start time of a first timer, and the first timer is a DRX activation time during operation.

In an alternative embodiment, the determining unit 802 is further configured to determine whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command MAC CE, long DRX command MAC CE and scheduling request information.

In an alternative embodiment, the determining unit 802 determines whether to transmit the target signal if the wake-up signal indicates to start a first timer by default, where the first timer is a DRX activation time during operation.

In an alternative embodiment, the processing unit 803 is further configured to perform a preparation operation for transmitting the target signal in case it is estimated that the target signal needs to be transmitted at the second time instant.

In an alternative embodiment, the target signal includes at least one of: CSI, SRS.

In an alternative embodiment, the CSI includes at least one of:

CSI periodically transmitted on PUCCH, CSI semi-statically transmitted on PUSCH.

In an alternative embodiment, the SRS includes at least one of:

Periodic SRS, semi-static SRS.

Those skilled in the art will appreciate that the above description of the signal transmission apparatus of the embodiments of the present application may be understood with reference to the description of the signal transmission method of the embodiments of the present application.

Fig. 9 is a schematic diagram ii of a structural composition of a signal transmission device according to an embodiment of the present application, as shown in fig. 9, where the signal transmission device includes:

a determining unit 901, configured to determine a first offset of a time of the wake-up signal with respect to a reference time; the first offset is greater than or equal to a first threshold;

a judging unit 902, configured to judge, at a first time, whether the second time is in a DRX activation time; the first moment is earlier than the second moment, and the time interval between the first moment and the second moment is greater than or equal to the first threshold value;

a processing unit 903, configured to transmit a target signal at the second time if the second time is at the DRX activation time; and if the second moment is not in the DRX activation time, not transmitting the target signal at the second moment.

In an optional embodiment, the determining unit 902 is configured to not start the first timer and determine that the second time is not in the DRX activation time if the wake-up signal is not detected at the third time;

Wherein the third time is earlier than or equal to the first time; the first timer running period is DRX activation time.

In an optional implementation manner, the determining unit 902 is configured to detect the wake-up signal at a third time, and the wake-up signal indicates that the first timer is started, and determine that the second time is at the DRX activation time;

In an alternative embodiment, the determining unit 902 is further configured to determine whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command MAC CE, long DRX command MAC CE and scheduling request information.

In an alternative embodiment, the CSI includes at least one of:

In an alternative embodiment, the SRS includes at least one of:

periodic SRS, semi-static SRS.

Fig. 10 is a schematic structural diagram of a communication device 1000 provided in an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 1000 shown in fig. 10 includes a processor 1010, where the processor 1010 may call and execute a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 10, the communication device 1000 may also include a memory 1020. Wherein the processor 1010 may call and run a computer program from the memory 1020 to implement the methods in embodiments of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, as shown in fig. 10, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices.

The transceiver 1030 may include, among other things, a transmitter and a receiver. The transceiver 1030 may further include an antenna, the number of which may be one or more.

Optionally, the communication device 1000 may be specifically a network device in the embodiment of the present application, and the communication device 1000 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 1000 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 1000 may implement corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which are not described herein for brevity.

Fig. 11 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1100 shown in fig. 11 includes a processor 1110, and the processor 1110 may call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 11, the chip 1100 may also include a memory 1120. Wherein the processor 1110 may call and run a computer program from the memory 1120 to implement the methods in embodiments of the present application.

Wherein the memory 1120 may be a separate device from the processor 1110 or may be integrated into the processor 1110.

Optionally, the chip 1100 may also include an input interface 1130. The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and in particular, may obtain information or data sent by the other devices or chips.

Optionally, the chip 1100 may also include an output interface 1140. Wherein the processor 1110 may control the output interface 1140 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Fig. 12 is a schematic block diagram of a communication system 1200 provided in an embodiment of the present application. As shown in fig. 12, the communication system 1200 includes a terminal device 1210 and a network device 1220.

The terminal device 1210 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1220 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of signal transmission, the method comprising:

the terminal equipment judges whether the second moment is in Discontinuous Reception (DRX) activation time or not at the first moment; the first moment is earlier than the second moment, and the time interval between the first moment and the second moment is greater than or equal to the first threshold value;

if the second moment is in the DRX activation time, the terminal equipment estimates that a target signal needs to be transmitted at the second moment; if the second moment is not in the DRX activation time, the terminal equipment does not transmit the target signal at the second moment;

if the terminal equipment detects the wake-up signal at the third moment and the wake-up signal indicates that the first timer is not started at the second moment, the terminal equipment does not transmit the target signal at the second moment;

Wherein the third time is later than the first time and earlier than the second time; the first timer running period is the DRX activation time.

2. The method of claim 1, wherein the method further comprises:

if the terminal equipment does not detect the wake-up signal at the third moment and the terminal equipment does not start the first timer at the second moment, the terminal equipment does not transmit the target signal at the second moment;

3. The method of claim 1, wherein the method further comprises:

if the terminal equipment detects the wake-up signal at the third moment and the wake-up signal indicates that the target signal is not transmitted at the second moment, the terminal equipment does not transmit the target signal at the second moment;

4. A method according to any one of claims 1 to 3, wherein the reference time is a start time of the first timer, the first timer running period being the DRX activation time.

5. A method according to any one of claims 1 to 3, wherein the method further comprises:

the terminal device determines whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command media access control unit (MAC CE), long DRX command MAC CE and scheduling request information.

6. The method of claim 5, wherein the terminal device determines whether to transmit the target signal if the wake-up signal indicates to start the first timer by default, the first timer being the DRX activation time during operation.

7. A method according to any of claims 1 to 3, wherein the terminal device estimates that in case a target signal needs to be transmitted at the second instant, the method further comprises:

the terminal device performs a preparation operation for transmitting the target signal.

8. A method according to any one of claims 1 to 3, wherein the target signal comprises at least one of: channel state information CSI, sounding reference signal SRS.

9. The method of claim 8, wherein the CSI comprises at least one of:

CSI periodically transmitted on a physical uplink control channel PUCCH, CSI semi-statically transmitted on a physical uplink shared channel PUSCH.

10. The method of claim 8, wherein the SRS comprises at least one of:

periodic SRS, semi-static SRS.

11. A method of signal transmission, the method comprising:

if the second moment is in the DRX activation time, the terminal equipment transmits a target signal at the second moment; if the second moment is not in the DRX activation time, the terminal equipment does not transmit the target signal at the second moment;

the terminal equipment does not detect the wake-up signal at a third moment, the terminal equipment does not start a first timer, and the terminal equipment determines that the second moment is not in the DRX activation time;

Wherein the third time is earlier than or equal to the first time; the first timer running period is the DRX activation time.

12. The method of claim 11, wherein the method further comprises:

the terminal equipment detects the wake-up signal at the third moment, and the wake-up signal indicates to start the first timer, so that the terminal equipment determines that the second moment is at the DRX activation time;

13. The method according to claim 11 or 12, wherein the reference time is a start time of the first timer, the first timer running period being the DRX activation time.

14. The method of any one of claims 11 or 12, wherein the method further comprises:

the terminal device determines whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command MAC CE, long DRX command MAC CE and scheduling request information.

15. The method of claim 11 or 12, wherein the target signal comprises at least one of: CSI, SRS.

16. The method of claim 15, wherein the CSI comprises at least one of:

17. The method of claim 15, wherein the SRS comprises at least one of:

periodic SRS, semi-static SRS.

18. A signal transmission apparatus, the apparatus comprising:

a processing unit, configured to estimate that a target signal needs to be transmitted at the second time if the second time is at the DRX activation time; if the second moment is not in the DRX activation time, the target signal is not transmitted at the second moment;

the processing unit is further configured to, if the wake-up signal is detected at a third time and the wake-up signal indicates that the first timer is not started at the second time, not transmit the target signal at the second time;

19. The apparatus of claim 18, wherein the processing unit is further configured to not transmit the target signal at the second time if the wake-up signal is not detected at the third time and the first timer is not started at the second time; wherein the third time is later than the first time and earlier than the second time; the first timer running period is the DRX activation time.

20. The apparatus of claim 18, wherein the processing unit is further configured to not transmit the target signal at the second time if the wake-up signal is detected at the third time and the wake-up signal indicates that the target signal is not transmitted at the second time; wherein the third time is later than the first time and earlier than the second time; the first timer running period is the DRX activation time.

21. The apparatus according to any one of claims 18 to 20, wherein the reference time is a start time of the first timer, the first timer run period being the DRX activation time.

22. The apparatus according to any one of claims 18 to 20, wherein the determining unit is further configured to determine whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command MAC CE, long DRX command MAC CE and scheduling request information.

23. The apparatus of claim 22, wherein the determining unit determines whether to transmit the target signal if the wake-up signal indicates to start the first timer by default, the first timer being the DRX activation time during operation.

24. The apparatus of any of claims 18 to 20, wherein the processing unit is further configured to perform a preparation operation for transmitting the target signal if it is estimated that the target signal needs to be transmitted at the second time instant.

25. The apparatus of any of claims 18 to 20, wherein the target signal comprises at least one of: CSI, SRS.

26. The apparatus of claim 25, wherein the CSI comprises at least one of:

27. The apparatus of claim 25, wherein the SRS comprises at least one of:

Periodic SRS, semi-static SRS.

28. A signal transmission apparatus, the apparatus comprising:

a processing unit, configured to transmit a target signal at the second time if the second time is at the DRX activation time; if the second moment is not in the DRX activation time, the target signal is not transmitted at the second moment;

the judging unit is configured to not start a first timer and determine that the second time is not at the DRX activation time if the wake-up signal is not detected at the third time;

29. The apparatus of claim 28, wherein the means for determining that the second time is at the DRX activation time is configured to detect the wake-up signal at the third time, and the wake-up signal indicates that the first timer is started;

30. The apparatus of claim 28 or 29, wherein the reference time is a start time of the first timer, the first timer being the DRX activation time during operation.

31. The apparatus of claim 28 or 29, wherein the determining unit is further configured to determine whether to transmit the target signal based on at least one of: uplink scheduling information, downlink scheduling information, DRX command MAC CE, long DRX command MAC CE and scheduling request information.

32. The apparatus of claim 28 or 29, wherein the target signal comprises at least one of: CSI, SRS.

33. The apparatus of claim 32, wherein the CSI comprises at least one of:

34. The apparatus of claim 32, wherein the SRS comprises at least one of:

periodic SRS, semi-static SRS.

35. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 10, or the method of any of claims 11 to 17.

36. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 10 or the method of any one of claims 11 to 17.

37. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 10 or the method of any one of claims 11 to 17.