CN117062147A

CN117062147A - Data transmission method and device

Info

Publication number: CN117062147A
Application number: CN202210493703.7A
Authority: CN
Inventors: 谢曦; 戴喜增; 常俊仁; 张莉莉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2023-11-14
Also published as: WO2023216837A1

Abstract

A data transmission method and device, under the multi-carrier scene, the terminal equipment can transmit data in an energy-saving mode. Wherein the method may comprise: the terminal equipment receives scheduling information, wherein the scheduling information is used for scheduling data transmission on a first cell, the state of the first cell is a deactivation state or a third state, and the third state is different from the deactivation state and the activation state; according to the scheduling information, carrying out data transmission in a first cell; in this way, the terminal device can be scheduled to perform data transmission on the cell in the deactivated state or the third state according to the scheduling information, so that the energy consumption of the terminal device can be reduced.

Description

Data transmission method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.

Background

Carrier aggregation (carrier aggregation, CA) is a technique to increase transmission bandwidth that can meet the requirements of single-user peak rate and system capacity improvement. The CA technology can aggregate a plurality of member carriers (component carrier, CC) under one base station to realize larger transmission bandwidth, thereby effectively improving the uplink and downlink transmission rate. In the CA scenario, one base station may be a plurality of cells, where one cell may be a primary cell of a User Equipment (UE), and the remaining plurality of cells may be secondary cells of the UE. The primary cell may be a cell in which the UE performs initial connection establishment, or a cell in which radio resource control (radio resource control, RRC) connection reestablishment is performed, or a cell designated during handover; the secondary cell may be a cell added through RRC connection reconfiguration after the initial security activation procedure for providing additional radio resources. The state of the auxiliary cell can be an active state or an inactive state, data transmission can be carried out in the active state, and operations such as measurement or carrier management can be carried out under the condition of configuring information such as measurement or carrier management; no data transmission is performed in the deactivated state.

In a multi-carrier scenario, how to perform data transmission in an energy-saving manner is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a data transmission method and a data transmission device, and terminal equipment can perform data transmission in an energy-saving mode under a multi-carrier scene.

In a first aspect, the present application provides a data transmission method, which may be performed by a terminal device or a module in a terminal device. The method may include: the terminal equipment receives scheduling information, wherein the scheduling information is used for scheduling data transmission on a first cell, and further, the data transmission is carried out on the first cell according to the scheduling information; wherein the state of the first cell is a deactivated state or a third state, the third state being different from the deactivated state and the activated state.

It can be seen that the terminal device can perform data transmission on the first cell in the deactivated state or the third state, thereby realizing data transmission in a power-saving manner.

In one possible implementation, for a first cell in the deactivated state or the third state, the terminal device may monitor a physical downlink control channel (physical downlink control channel, PDCCH) for the first cell. In this way, the network device may schedule the terminal device to perform data transmission on the first cell in the deactivated state or the third state, thereby reducing power consumption of the terminal device.

In one possible implementation, for the first cell in the deactivated state or the third state, the terminal device may not monitor the PDCCH in the first cell to reduce power consumption of the terminal device.

In one possible implementation, for the first cell in the deactivated state or the third state, the terminal device may further perform one or more of the following:

not transmitting sounding reference signals (sounding reference signal, SRS) in the first cell;

not transmitting a random access channel in the first cell;

not transmitting a channel state information report in the first cell;

not performing radio link monitoring measurements in the first cell;

not making radio link management measurements in the first cell;

not making beam failure detection measurements in the first cell;

not performing beam management in the first cell;

timing synchronization is not performed in the first cell;

frequency synchronization is not performed in the first cell; or alternatively

The automatic gain control is not performed in the first cell.

It can be seen that the terminal device can reduce the operation for the first cell in the deactivated state or the third state, thereby reducing the power consumption of the terminal device.

In one possible implementation manner, when the terminal device performs data transmission in the first cell, the terminal device may perform data transmission through a transmission module corresponding to the first cell. Before or during data transmission, the transmission module corresponding to the first cell is started, and when the data transmission is ended, the transmission module corresponding to the first cell is closed, so that unnecessary power consumption can be reduced, and the transmission efficiency is improved.

In one possible implementation manner, a time interval between a receiving time of the scheduling information and a starting time of the data transmission is K time units, where K is a positive integer.

In one possible implementation, the terminal device may send first information, where the first information is used to determine the value of K. The network device may determine the value of K according to the first information, where the first information may be capability information of the terminal device or preference information of the terminal device.

In one possible implementation, the terminal device stops the data transmission upon receiving the transmission end indication information from the network device. And stopping data transmission, and further closing a transmission module corresponding to the first cell, thereby reducing unnecessary power consumption.

In one possible implementation, the terminal device stops the data transmission if the timer corresponding to the first cell expires. And stopping data transmission, and further closing a transmission module corresponding to the first cell, thereby reducing unnecessary power consumption.

In one possible implementation, the terminal device receives configuration information, where the configuration information is used to configure a first frequency domain resource of the first cell, and the first frequency domain resource is used for data transmission by the terminal device in the first cell in the deactivated state or the first cell in the third state. Therefore, the frequency domain resources configured by the configuration information are configured to realize the data transmission of the terminal equipment in the first cell in the deactivated state or the third state, so that the power consumption of the terminal equipment is reduced.

In one possible implementation, the terminal device stops the data transmission when the timer corresponding to the first frequency domain resource expires. And stopping data transmission, and further closing a transmission module corresponding to the first cell, thereby reducing unnecessary power consumption.

In one possible implementation, the terminal device sends second information indicating one or more cells in which the second frequency domain resources are configurable, or the second information indicating one or more groups of cells in which the second frequency domain resources are configurable. The second frequency domain resource is a resource that the terminal device can perform data transmission in the first cell in the deactivated state or the third state. The network device may determine the configuration information according to the second information.

In one possible implementation, the terminal device sends third information indicating one or more cells that may be set to the third state, or the third information indicates one or more cell groups that may be set to the third state. The network device may determine the configuration information according to the third information.

In one possible implementation, the terminal device receives state switching information, where the state switching information indicates that the state of the first cell is switched from the third state to the activated state, or the state switching information indicates that the state of the first cell is switched from the third state to the deactivated state; or, the state switching information indicates that the state of the first cell is switched from the active state to the third state; or, the state switching information indicates that the state of the first cell is switched from the deactivated state to the third state. It can be seen that the terminal device can determine the state of the first cell by means of the state handover information.

In one possible implementation, the terminal device receives the scheduling information, and may receive the scheduling information in a second cell, and the state of the second cell may be an active state. It can be seen that the network device schedules the terminal device to perform data transmission in the first cell in the deactivated state or the third state, thereby reducing the power consumption of the terminal device.

Optionally, the first cell is a primary cell, and the second cell is a secondary cell; or the first cell is a secondary cell, and the second cell is a primary cell; or the first cell is an auxiliary cell, and the second cell is an auxiliary cell; or, the first cell is an anchor cell, and the second cell is a non-anchor cell.

In one possible implementation, the carrier of the first cell is different from the carrier of the second cell; the measurement result corresponding to the carrier wave of the first cell is the same as the measurement result corresponding to the carrier wave of the second cell; or, a difference between the measurement result corresponding to the carrier of the first cell and the measurement result corresponding to the carrier of the second cell is less than or equal to a first threshold; or the timing result corresponding to the carrier of the first cell is the same as the timing result corresponding to the carrier of the second cell; or, a difference between the timing result corresponding to the carrier of the first cell and the timing result corresponding to the carrier of the second cell is less than or equal to the second threshold. It will be appreciated that the carrier of the first cell has the same or similar characteristics as the carrier of the second cell, so that certain results of the first cell may refer to certain results of the second cell, and the terminal device does not need to perform some operations with respect to the first cell, so as to reduce power consumption of the terminal device.

In a second aspect, the present application provides a data transmission method, which may be performed by a network device or a module in a network device. The method may include: the network equipment sends scheduling information which is used for scheduling data transmission in the first cell; the state of the first cell is a deactivated state or a third state, the third state being different from the deactivated state and the activated state.

In one possible implementation, the network device receives the first information from the terminal device, and determines, according to the first information, that a time interval between a transmission time of the scheduling information and a start time of the data transmission is K time units, where K is a positive integer. The first information may be capability information of the terminal device or preference information of the terminal device.

In one possible implementation, the network device sends end of transmission indication information, where the end of transmission indication information is used to indicate to stop data transmission, and the terminal device may stop data transmission. Further, the terminal device may close the transmission module corresponding to the first cell, so as to reduce unnecessary power consumption.

In one possible implementation, the network device sends configuration information, where the configuration information is used to configure a first frequency domain resource of the first cell, and the first frequency domain resource is used for data transmission by the terminal device in the first cell in the deactivated state or the first cell in the third state. Therefore, the frequency domain resources configured by the configuration information are configured to realize the data transmission of the terminal equipment in the first cell in the deactivated state or the third state, so that the power consumption of the terminal equipment is reduced.

In one possible implementation, the network device receives second information indicating one or more cells in which the second frequency domain resources are configurable, or the second information indicating one or more groups of cells in which the second frequency domain resources are configurable. The second frequency domain resource is a resource that the terminal device can perform data transmission in the first cell in the deactivated state or the third state. The network device may determine the configuration information according to the second information.

In one possible implementation, the network device receives third information indicating one or more cells that may be set to a third state, or third information indicating one or more cell groups that may be set to a third state. The network device may determine the configuration information according to the third information.

In one possible implementation, the network device sends state switching information, where the state switching information indicates that the state of the first cell is switched from the third state to the activated state, or the state switching information indicates that the state of the first cell is switched from the third state to the deactivated state; or, the state switching information indicates that the state of the first cell is switched from the active state to the third state; or, the state switching information indicates that the state of the first cell is switched from the deactivated state to the third state. It can be seen that the terminal device can learn the state of the first cell through the state switching information.

In one possible implementation, the network device may send the scheduling information in a second cell, and the state of the second cell may be an active state. It can be seen that the network device schedules the terminal device to perform data transmission in the first cell in the deactivated state or the third state, thereby reducing the power consumption of the terminal device.

In a third aspect, the present application provides a communication device, which may be a terminal device, a device in a terminal device, or a device that can be used in a matching manner with a terminal device. The communication device may also be a chip system. The communication device may perform the method of the first aspect. The functions of the communication device can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the functions described above. The unit or module may be software and/or hardware. The operations and advantages performed by the communication device may be seen from the methods and advantages described in the first aspect above.

In a fourth aspect, the present application provides a communication apparatus, which may be a network device, an apparatus in a network device, or an apparatus that can be used in a matching manner with a network device. The communication device may also be a chip system. The communication device may perform the method of the second aspect. The functions of the communication device can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the functions described above. The unit or module may be software and/or hardware. The operations and advantages performed by the communication device may be seen with the method and advantages described in the second aspect above.

In a fifth aspect, the present application provides a communications device comprising a processor and interface circuitry for receiving signals from or transmitting signals from other communications devices than the communications device to the processor, the processor being operable to implement a method as in any of the first and second aspects by logic circuitry or executing code instructions.

In a sixth aspect, the present application provides a computer readable storage medium having instructions stored therein which, when executed by a communication device, implement a method as in any one of the first and second aspects.

In a seventh aspect, the present application provides a computer program product comprising instructions which, when read and executed by a communication device, cause the communication device to perform the method of any one of the first and second aspects.

In an eighth aspect, the present application provides a communication system comprising at least one communication device for performing the method according to the first aspect, and at least one communication device for performing the method according to the second aspect.

Drawings

FIG. 1 is a schematic diagram of a system architecture to which the present application is applied;

fig. 2 is an exemplary diagram of a carrier aggregation type;

fig. 3 is an exemplary diagram of a carrier aggregation scenario;

FIG. 4 is an exemplary diagram of an adaptive bandwidth;

fig. 5 is a flow chart of a data transmission method according to an embodiment of the present application;

fig. 6 is a flow chart of a data transmission method according to another embodiment of the present application;

fig. 7 is a flow chart of a data transmission method according to another embodiment of the present application;

fig. 8 is a flow chart of a data transmission method according to another embodiment of the present application;

FIG. 9 is a schematic diagram of transitions between a third state, a deactivated state, and an activated state;

FIG. 10 is a schematic diagram of one form of communication between a terminal device and a network device;

fig. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In the present application, the words "first", "second", etc. are used to distinguish between identical items or similar items that have substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. It should be understood that in the present application, "at least one" means one or more; "plurality" means two or more.

First, a system architecture to which the present application relates will be explained.

The application is applicable to fifth generation (5 ^th -generation, 5G) system, which may also be referred to as new radio, NR, system; or can be applied to the sixth generation (6 ^th -generation, 6G) system, or seventh generation (7 ^th -generation, 7G) system, or other future communication system; or may also be used in device-to-device (D2D) systems, machine-to-machine (machine to machine, M2M) systems, internet of vehicles (vehicle to everything, V2X), and the like.

The application is applicable to the system architecture shown in fig. 1. The system architecture shown in fig. 1 may include, but is not limited to: network device 120 and terminal device 110. The number and form of the devices in fig. 1 are used for illustration, and are not limited to the embodiments of the present application, and for example, a plurality of terminal devices may be included in practical applications.

A terminal device, also called User Equipment (UE), mobile Station (MS), mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user. Such as a handheld device, an in-vehicle device, etc., having a wireless connection function. Currently, examples of some terminal devices are: a mobile phone, a tablet, a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.

A network device, which may also be referred to as an access network device, refers to a radio access network (radio access network, RAN) node (or device), which accesses a terminal device to a wireless network, which may also be referred to as a base station. Currently, some examples of RAN nodes are: a further evolved Node B (gNB), a transmission and reception point (transmission reception point, TRP), an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a wireless fidelity (wireless fidelity, wifi) Access Point (AP), etc. In addition, in one network structure, the network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node. It should be noted that, the centralized unit node and the distributed unit node may also use other names, and the present application is not limited thereto.

Next, related names or terms related to the present application are set forth to facilitate understanding by those skilled in the art.

1. Carrier Aggregation (CA)

CA is a technique to increase transmission bandwidth, which can meet the requirements of single-user peak rate and system capacity improvement. The CA technology can aggregate a plurality of CCs under one base station to realize larger transmission bandwidth, thereby effectively improving the uplink and downlink transmission rate.

1. Carrier aggregation type

The terminal equipment can decide according to the capacity of the terminal equipment, and can simultaneously utilize a plurality of CCs to carry out uplink and downlink transmission at most. The several CCs may be contiguous CCs within a frequency band, or non-contiguous CCs within a frequency band, or inter-frequency band CCs. For example, reference may be made to the exemplary diagrams of three carrier aggregation types shown in fig. 2. As shown in fig. 2 (1), the aggregated CCs include 3 continuous CCs in the frequency band a, and the carrier aggregation type is the intra-band aggregation of the continuous CCs; as shown in (2) of fig. 2, the aggregated CCs include discontinuous CCs in the frequency band a, and the carrier aggregation type is intra-band aggregation of the discontinuous CCs; as shown in fig. 2 (3), the aggregated CCs include 2 CCs that are discontinuous in the frequency band a and one CC in the frequency band B, and the carrier aggregation type is inter-frequency band aggregation. For inter-band aggregation, CCs aggregated within a certain frequency band may be contiguous or non-contiguous. The specific type of carrier aggregation used by the terminal device is not limited in the present application.

2. Primary and secondary cells

In the CA scenario, one base station may manage several cells, where one cell may be a primary cell (PCell) of a terminal device, and the remaining several cells may be secondary cells (scells) of the terminal device. The primary cell may be a cell in which the terminal device performs initial connection establishment, or a cell in which RRC connection reestablishment is performed, or a cell designated during handover. The primary cell is responsible for RRC communication with the terminal device. The CC corresponding to the primary cell may be referred to as a primary component carrier (primary carrier aggregation, PCC). The secondary cell may be a cell added through RRC connection reconfiguration after the initial security activation procedure for providing additional radio resources. The CC corresponding to the secondary cell may be referred to as a secondary component carrier (secondary carrier aggregation, SCC).

In the CA scenario, a terminal device configured with CA may be connected to one primary cell and at most 31 secondary cells, which form a serving cell set of the terminal device. The serving cell set includes a maximum of 32 serving cells (i.e., 1 primary cell and a maximum of 31 secondary cells). The CA may have terminal device granularity level characteristics, and different terminal devices may have different primary, secondary, and serving cell sets. The same cell may be a primary cell for one terminal device and a secondary cell for another terminal device. For example, referring to the CA scenario shown in fig. 3, the serving cell set of the terminal device includes one primary cell and 3 secondary cells.

3. State of secondary cell

Currently, the states of the secondary cell may be divided into an activated state (activated) and a deactivated state (de-activated), and the activated state may be simply referred to as an activated state and the deactivated state may be simply referred to as a deactivated state. The state of the secondary cell is the active state: the terminal equipment can perform data transmission on the auxiliary cell, and the data transmission can comprise uplink data transmission and/or downlink data transmission; under the condition that the base station configures measurement for the terminal equipment, the terminal equipment can also measure aiming at the auxiliary cell; in the case that the base station configures other operations for the terminal device, the terminal device may also perform other operations for the secondary cell, such as timing synchronization, etc. The state of the secondary cell is the deactivated state: the terminal device does not perform data transmission on the secondary cell.

In the present application, the states of the secondary cells can be divided into an active state, a deactivated state, and a third state. The third state is different from the activated state and the deactivated state, and the three states are mutually switchable. The third state is used for example, and is not limiting to the present application, and may be referred to as a new state or standby state, for example. In the application, the state of the auxiliary cell is a deactivation state, and the terminal equipment can perform data transmission on the auxiliary cell; the state of the auxiliary cell is a third state, and the terminal equipment can perform data transmission on the auxiliary cell.

2. Bandwidth portion (BWP)

A subset of the total bandwidth of the serving cell is called BWP.

The maximum bandwidth of the 5G system can reach 400MHz, and if all terminal equipment is required to support 400MHz, higher requirements are put on the performance of the terminal equipment, so that the cost of the terminal equipment is not reduced. Meanwhile, a large bandwidth means a high sampling rate, and a high sampling rate means high power consumption, but it is impossible for a terminal device to occupy the whole 400MHz bandwidth at the same time, but the terminal device still adopts a sampling rate corresponding to the 400MHz bandwidth, and performance is wasted. Thus, 5G introduces adaptive bandwidth (bandwidth adaptation, BA) techniques. With BA technology, the reception and transmission bandwidths of the terminal devices do not need to be as large as the bandwidths of their serving cells and can be adjusted. The adjustment may include one or more of the following: changing the bandwidth width, for example, the bandwidth width may be reduced during periods of low activity to save power; shifting the position in the frequency domain, i.e. shifting the center frequency point of BWP, for example, may increase scheduling flexibility; the configuration of the subcarrier spacing is changed, for example, to accommodate different services. The BA may be implemented by providing the terminal device with BWP configuration and informing the terminal device which configured BWP is the currently active BWP.

For example, reference may be made to the BA illustration shown in FIG. 4. In fig. 4, three BWP configurations are provided for the terminal device, BWP respectively ₁ The bandwidth is 40MHz, and the subcarrier spacing is 15kHz; BWP (BWP) ₂ The bandwidth is 10MHz, and the subcarrier spacing is 15kHz; BWP (BWP) ₃ The bandwidth is 20MHz and the subcarrier spacing is 60kHz.

1. Activating BWP

Currently, the activated BWP refers to BWP that the terminal device is using. The active BWP may be initial BWP (initial BWP), default BWP (default BWP), or other BWP of the network device configuration. The initial BWP refers to BWP used when the terminal device makes initial access on the serving cell. The default BWP is typically a BWP of smaller bandwidth that the network device configures. In general, the bandwidths of the initial BWP and the default BWP may be relatively small, and the bandwidths of other BWP other than the initial/default BWP may be large, which may be used for data transmission.

2. Dormancy BWP (dormant BWP)

The secondary cell dormancy (SCell dormant) is a terminal device energy saving mechanism, by using the mechanism, the power consumption of the terminal device on the secondary cell can be reduced, and meanwhile, the terminal device can keep the relevant configuration of the secondary cell, so that the secondary cell can be used quickly when the secondary cell is required to be used for data transmission. The secondary cell dormancy mechanism may be implemented by configuring a dormant BWP for the secondary cell. In the case where the state of the secondary cell is active, a secondary cell dormancy mechanism may be used.

Currently, the network device may configure at most one dormant BWP for the secondary cell, where the configuration of the dormant BWP does not include a configuration of a search space (search space) in order to quickly resume the use of the secondary cell. If a secondary cell is configured with dormant BWP, the network device may instruct the terminal device to switch to dormant BWP on the secondary cell or instruct the terminal device to switch from dormant BWP to other non-dormant BWP on the secondary cell via downlink control information (downlink control information, DCI).

If the terminal device is instructed to switch to dormant BWP on the secondary cell, the terminal device stops monitoring PDCCH on the secondary cell and stops monitoring PDCCH for the secondary cell. Stopping monitoring the PDCCH on the secondary cell, and being applicable to the cell scheduling, the cell scheduling can be understood as that the scheduling information such as DCI is used for scheduling the related operation on a certain cell. Stopping monitoring the PDCCH on the secondary cell may be understood as stopping monitoring the PDCCH for the secondary cell on the secondary cell. Stopping monitoring the PDCCH for the secondary cell is suitable for cross-cell scheduling, which can be understood as that scheduling information such as DCI is used to schedule related operations on one cell to another cell, for example, scheduling related operations on the primary cell to the secondary cell. The terminal device stops monitoring the PDCCH for the secondary cell, which can be understood as stopping monitoring the PDCCH for the secondary cell on other cells except the secondary cell. The cross-cell scheduling may also be described as cross-carrier scheduling.

If the network device configures the terminal device with operations such as measurement, the terminal device may also perform configuration corresponding operations when switching to dormant BWP on the secondary cell, such as one or more of channel state information (channel state information, CSI) measurement, automatic gain control (automatic gain control, AGC), or beam management (beam management), etc. CSI measurement refers to measurement of downlink reference signals, which may include, but are not limited to, CSI-RS, synchronization signals, and physical broadcast channel blocks (Synchronization Signal Block, SSB), or physical broadcast channel demodulation reference signals (PBCH DMRS), etc. AGC refers to controlling the gain of an amplifying circuit according to signal strength to keep the output voltage or power of a receiver or the like substantially unchanged. The process of beam management may include beam scanning (transmitting or receiving beams in a predetermined manner to cover a particular spatial region during a particular period or time), beam measurement (network or terminal device making measurements of the quality and characteristics of received reference signals to identify the best beam), beam reporting (for terminal devices reporting beam measurements), beam indication (network device informing terminal device of selection of a particular beam), and beam recovery (including beam failure detection, discovery of new beams and beam recovery processes).

3. BWP static timer

The BWP inactivity timer is used for switching the BWP of the terminal device. Currently, the network device may configure a BWP inactivity timer for the secondary cell. The BWP inactivity timer may be started or restarted when the terminal device receives scheduling information on an active BWP other than the default BWP or the initial BWP or the dormant BWP. When the BWP inactivity timer times out, the terminal device may switch the current active BWP to the default BWP in case the network device configures the default BWP for the terminal device; in case the network device is not configured with the default BWP, the terminal device may switch the current active BWP to the initial BWP.

The data transmission method provided by the application is explained below.

Fig. 5 is a schematic flow chart of a data transmission method according to an embodiment of the application, and the flow chart specifically includes the following steps:

optionally, S101, the network device sends configuration information to the terminal device. Correspondingly, the terminal device receives configuration information from the network device.

The configuration information is used for configuring a first frequency domain resource of the first cell. The first cell may be any one of cells in a CA scenario, such as a primary cell or a secondary cell; or may be an anchor cell or a non-anchor cell. In the application, the information such as the measurement result, the time-frequency estimation result, the AGC result and the like on the anchor cell can be suitable for the corresponding non-anchor cell, and the operations such as measurement, timing synchronization, frequency domain synchronization, AGC and the like can not be carried out on the non-anchor cell. The corresponding non-anchor cell of the anchor cell may be understood as the carrier of the anchor cell and the carrier of the non-anchor cell having the same or similar characteristics. In the communication system, the number of anchor cells may be one or more, for example, the primary cell may be an anchor cell, and the secondary cell may also be an anchor cell. One anchor cell may be associated with one or more non-anchor cells. The application takes the first cell as the auxiliary cell or the non-anchor cell as an example.

The first frequency domain resource is used for data transmission of the terminal equipment in the first cell in the deactivated state so as to support the data transmission of the terminal equipment in the first cell in the deactivated state, wherein the data transmission can comprise data sending and/or data receiving. Further, the reception data may be reception data on a resource indicated by a downlink assignment (DL assignment), and the transmission data may be transmission data on a resource indicated by an uplink grant (UL grant). The first frequency domain resource may be a bandwidth resource, e.g. BWP, on which the terminal device may perform data transmission when the state of the first cell is in the deactivated state. The present application takes the first frequency domain resource as the first BWP as an example, and the number of the first BWP may be one or more. In the embodiment shown in fig. 5, the first BWP may be a new type BWP, such as stand-by BWP or special BWP, etc., which is opposite to the dormant BWP and the active BWP. It is understood that the new type BWP is a newly defined BWP, and the name of the BWP is not limited in the present application.

The data transmission in the first cell may be described as data transmission through the resources of the first cell, data transmission using the resources of the first cell, data transmission through the carrier of the first cell, data transmission using the carrier of the first cell, data transmission on the resources of the first cell, or the like.

In case the network device configures the terminal device with the first BWP of the first cell in the deactivated state, the operation of the terminal device for the first cell may comprise one or more of the following:

monitoring the PDCCH for the first cell, i.e. monitoring the PDCCH for the first cell on other cells than the first cell, to check if the network device schedules the terminal device for data transmission on the first cell;

not listening to PDCCH in the first cell, i.e. not listening to PDCCH on the first cell;

-not transmitting sounding reference signals (sounding reference signal, SRS) in the first cell;

-not transmitting a random access channel (random access channel, RACH) in the first cell;

not sending a CSI report (CSI report) for the first cell; not transmitting the CSI report for the first cell may include not transmitting the CSI report on the first cell and not transmitting the CSI report for the first cell on other cells than the first cell;

radio resource management (radio resource management, RRM) measurements are not made at the first cell; further, the terminal device does not report the RRM measurement result; if the RRM measurement is performed in the first cell, the terminal equipment can not report the RRM measurement result in the first cell;

Not making radio link monitoring (Radio Link Monitoring, RLM) measurements at the first cell;

not making beam failure detection (Beam Failure Detection, BFD) measurements at the first cell;

beam management is not performed in the first cell;

timing synchronization is not performed in the first cell;

frequency synchronization is not performed in the first cell;

not AGC in the first cell;

uplink transmission in the first cell, e.g. uplink-shared channel (UL-SCH), and/or physical uplink control channel (physical uplink control channel, PUCCH); further, when uplink transmission configuration information or uplink transmission scheduling information is received, uplink transmission is performed in the first cell, and the uplink transmission configuration information is used for configuring resources of an UL-SCH, and the uplink transmission scheduling information is used for scheduling transmission of the UL-SCH; or alternatively

Downlink reception in the first cell, e.g. receiving a physical downlink shared channel (physical downlink shared channel, PDSCH); further, in the case of receiving downlink configuration information or downlink scheduling information, downlink reception is performed in the first cell, and the downlink configuration information is used for configuring the resources of the PDSCH, and the downlink scheduling information is used for scheduling the PDSCH, for example.

It should be noted that, the operations of the terminal device with respect to the first cell in the deactivated state are used as an example, and as the standard evolves, the operations may be added or subtracted.

S102, the network equipment sends scheduling information to the terminal equipment. Correspondingly, the terminal device receives the scheduling information from the network device.

The network device may schedule the terminal device for data transmission on the first BWP of the first cell in the deactivated state. The network device may schedule the terminal device for data transmission on the first BWP of the first cell in the deactivated state by sending scheduling information to the terminal device.

The scheduling information may be DCI for scheduling data transmission on the first cell. The scheduling information is used for scheduling data transmissions on the first cell, and may also be described as scheduling information for scheduling data transmissions of the first cell (DCI is used for the scheduling of PUSCH and/or PDSCH in one cell), or scheduling information for indicating use of resources of the first cell for data transmissions, etc. Further, the scheduling information may be described as the scheduling information being used for scheduling data transmission on the first BWP of the first cell, or the scheduling information being used for indicating data transmission using the first BWP of the first cell, etc.

S103, the terminal equipment performs data transmission in the first cell according to the scheduling information.

And the terminal equipment can perform data transmission in the first cell according to the scheduling information under the condition of receiving the scheduling information. Further, the terminal device performs data transmission on the first BWP of the first cell according to the scheduling information.

Optionally, the terminal device may perform data transmission through a transmission module corresponding to the first cell. For example, before or when the terminal device starts to send uplink data, starting a transmission module corresponding to the first cell; or when the terminal equipment monitors PDCCH of the dispatching PDSCH or the PUSCH, starting a transmission module corresponding to the first cell. Among them, the transmission module is, for example, a Radio Frequency (RF) module or a radio frequency device, etc. In one implementation, when the terminal equipment starts a transmission module corresponding to a first cell, starting a timer corresponding to the first cell, and when data transmission exists, restarting the timer corresponding to the first cell; or when the terminal equipment starts a transmission module corresponding to the first cell, starting a timer corresponding to the first BWP, and restarting the timer corresponding to the first BWP when data transmission exists. In another implementation manner, the terminal device starts a transmission module corresponding to the first cell, starts a timer corresponding to the first cell at the starting time of data transmission, and restarts the timer corresponding to the first cell when data transmission exists; or starting a timer corresponding to the first BWP at the starting moment of data transmission, and restarting the timer corresponding to the first BWP when the data transmission exists. It may be understood that the time of starting the transmission module corresponding to the first cell may be the same or different from the starting time of data transmission, and further the time of starting the transmission module corresponding to the first cell may be the same or different from the time of starting the timer corresponding to the first cell or the timer corresponding to the first BWP, for example, the transmission module corresponding to the first cell is started first, and the timer corresponding to the first cell or the timer corresponding to the first BWP is started when data transmission is performed. When the timer corresponding to the first cell or the timer corresponding to the first BWP expires, the terminal device may consider that the transmission ends or there is no subsequent transmission for a while, and then the data transmission may be stopped, and further, the transmission module corresponding to the first cell may be turned off. The specific timing duration of the timer corresponding to the first cell or the timer corresponding to the first BWP may be preconfigured, or predefined by the protocol, or configured by the network device.

The network device may send end of transmission indication information to the terminal device. Wherein the end of transmission indication information may be carried in DCI, or in a medium access control-control element (media access control control element, MAC-CE), or in other signaling. The terminal device receives the transmission end indication information, and can consider that the transmission is ended, and then stops the data transmission. Optionally, the terminal device may close a transmission module corresponding to the first cell. Before or during data transmission, the terminal device starts a transmission module corresponding to the first cell, and when the data transmission is finished, the terminal device closes the transmission module corresponding to the first cell, so that unnecessary power consumption can be reduced, and transmission efficiency is improved.

For a network device, the time interval between the time of transmission of the scheduling information and the time of start of data transmission (e.g., receiving data on a resource indicated by a downlink allocation or on a resource indicated by an uplink grant) is K time units, where K is a positive integer. The sending time of the scheduling information can be determined by the time domain resources occupied by the scheduling information, and the starting time of the data transmission can be determined by the time domain resources of the PDSCH or the PUSCH. Correspondingly, for the terminal device, the time interval between the receiving time of the scheduling information and the starting time of the data transmission is K time units. It will be appreciated that the time interval between the time of transmission of the scheduling information and the time of start of the data transmission is different from the existing time interval, for example the value of K is different from the existing one. Under the condition that the transmission delay is negligible, the sending time of the scheduling information is the receiving time of the scheduling information. The time unit may be a radio frame (radio frame), a subframe (subframe), a slot (slot), a mini-slot (mini-slot), or a symbol, etc. For example, the symbol may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, which may also be simply referred to as a time domain symbol.

Optionally, the terminal device may send first information to the network device, and the network device may determine the value of K according to the first information. The first information may be capability information of the terminal device or preference information of the terminal device. Taking the capability information as an example, the capability information indicates that the supported value of K is 4 slots, and the network device may determine that the value of K is greater than or equal to 4 slots. That is, the value of K determined by the network device according to the capability information of the terminal device is not lower than the value of K recommended by the terminal device. Taking preference information as an example, the preference information indicates that the proposed value of K is 4 slots, the network device may determine that the value of K is 4 slots, or the network device does not employ 4 slots and determines that the value of K is 3 slots. That is, the terminal device suggests a value of K, which may or may not be employed by the network device.

In one implementation, the scheduling information may be used to schedule the terminal device for data transmission on the first BWP of the first cell in the deactivated state on other cells than the first cell (e.g., the primary cell). In the present application, the second cell is taken as an example of other cells than the first cell. It is understood that the network device transmits scheduling information in the second cell, and it is understood that the network device transmits scheduling information for the first cell on the resources of the second cell. The state of the second cell may be an active state.

The relation between the first cell and the second cell can be that the first cell is a main cell under a CA scene, and the second cell is a secondary cell under the CA scene; or the first cell is a secondary cell in a CA scene, and the second cell is a primary cell in the CA scene; or the first cell is a secondary cell in the CA scene, and the second cell is a secondary cell in the CA scene; or, the first cell is an anchor cell, and the second cell is a non-anchor cell.

Further, the carrier of the first cell is different from the carrier of the second cell, but the carrier of the first cell and the carrier of the second cell have the same or similar characteristics. For example, the same or similar characteristic may be a measurement result on the carrier, i.e. the measurement result corresponding to the carrier of the first cell is the same as the measurement result corresponding to the carrier of the second cell, or the difference between the measurement result corresponding to the carrier of the first cell and the measurement result corresponding to the carrier of the second cell is less than or equal to a first threshold, which may be predefined by the protocol, the specific value of which is not limited in the present application. As another example, the same or similar characteristic may be a timing result on the carrier, i.e. the timing result corresponding to the carrier of the first cell is the same as the timing result corresponding to the carrier of the second cell, or the difference between the timing result corresponding to the carrier of the first cell and the timing result corresponding to the carrier of the second cell is less than or equal to a second threshold, which may be predefined by the protocol, the specific value of which is not limited in the present application. For another example, the same or similar characteristic may be a frequency synchronization result on the carrier, that is, the frequency synchronization result corresponding to the carrier of the first cell is the same as the frequency synchronization result corresponding to the carrier of the second cell, or a difference between the frequency synchronization result corresponding to the carrier of the first cell and the frequency synchronization result corresponding to the carrier of the second cell is less than or equal to a third threshold, which may be predefined by the protocol, and the specific value thereof is not limited in the present application. In other words, the frequency domain position of the frequency band to which the first cell belongs and the frequency domain position of the frequency band to which the second cell belongs may be similar; or the first cell and the second cell are two cells deployed by the same site, and the same site can be understood as the same base station or the same TRP. Alternatively, the frequency band to which the first cell belongs may be a low frequency band. When the low frequency is used for communication, the propagation loss is relatively small, so that the power requirement when data is transmitted is relatively small, and the terminal equipment is favorable for data transmission based on uplink service.

That is, the present application is applicable to a scenario in which the carrier of the first cell and the carrier of the second cell have the same or similar characteristics, and in the case where the network device is configured with the first BWP of the first cell in the deactivated state, the terminal device may not perform some operations in the first cell to reduce unnecessary operations performed by the terminal device with respect to the first cell, thereby saving power consumption; when receiving the scheduling information, the terminal equipment performs data transmission in the first cell in the deactivation state, so that the data transmission can be performed with low power consumption in the first cell in the deactivation state.

Alternatively, the network device may determine the configuration information according to the second information to perform step S101. The second information is sent by the terminal device to the network device, i.e. before step S101, the terminal device sends the second information to the network device.

Wherein the second information indicates one or more cells in which the second frequency domain resource is configurable, or the second information indicates one or more cell groups in which the second frequency domain resource is configurable. The second frequency domain resource is a resource that the terminal equipment can perform data transmission in the first cell in the deactivated state. The second frequency domain resource may be a bandwidth resource, e.g., BWP. It is understood that the second frequency domain resource generally refers to a resource supportable by the terminal device for data transmission in the first cell in the deactivated state. The present application takes the second frequency domain resource as the second BWP as an example. It is understood that the second BWP is a BWP for which the terminal device can perform data transmission in the first cell in the deactivated state. That is, the second information indicates to the terminal device for which cells or which cell groups the network device suggests to configure the second BWP. The advice of the terminal device may or may not be taken by the network device in its entirety or in part. For example, the second information indicates that the cell in which the second BWP is configurable includes a secondary cell 1, a secondary cell 2, and a secondary cell 3, and the network device may configure the first BWP for the secondary cell 1. For another example, the second information indicates that the cell group configurable with the second BWP includes cell group 1 and cell group 2, wherein cell group 1 includes secondary cell 1 and secondary cell 2, cell group 2 includes secondary cell 3, secondary cell 4 and secondary cell 5, and the network device may configure the first BWP for both secondary cell 1 and secondary cell 2. The first BWP and the second BWP may be the same or different.

In the embodiment shown in fig. 5, in case the network device configures a new type BWP of the first cell in the deactivated state, the terminal device may not perform some operations in the first cell to reduce unnecessary operations of the terminal device with respect to the first cell, thereby saving power consumption; when receiving the scheduling information, the terminal equipment performs data transmission in the first cell in the deactivation state, so that the data transmission can be performed with low power consumption in the first cell in the deactivation state.

Referring to fig. 6, a flow chart of a data transmission method according to another embodiment of the application is shown, and the flow chart specifically includes the following steps:

optionally, S101', the network device sends configuration information to the terminal device. Correspondingly, the terminal device receives configuration information from the network device. The implementation process of step S101' may refer to the specific description of step S101, and will not be described herein.

S102', the terminal equipment performs data transmission in the first cell according to the pre-configured resources.

The pre-configured resource can be used for data transmission of the terminal equipment. In other words, the terminal device can use the preconfigured resource to perform data transmission in the first cell, and even if the state of the first cell is in the deactivated state, the terminal device can use the preconfigured resource to perform data transmission in the first cell.

The pre-configured resources may be time-frequency resources. Alternatively, the pre-configured resource may be periodic, and the terminal device may use the pre-configured resource to perform data transmission in the first cell in the deactivated state periodically. Alternatively, the frequency domain range of the pre-configured resource may be the frequency domain range of the first BWP or the frequency domain range of the pre-configured resource may be within the frequency domain range of the first BWP.

It may be understood that step S102 and step S103 are steps of scheduling data transmission by the terminal device in the first cell in the deactivated state by the scheduling information, and step 102' is steps of performing data transmission by the terminal device in the first cell in the deactivated state according to the pre-configured resources.

In the embodiment shown in fig. 6, the terminal device may implement data transmission with low power consumption in the first cell in the deactivated state according to the preconfigured resources.

Fig. 7 is a schematic flow chart of a data transmission method according to another embodiment of the application, and the flow chart specifically includes the following steps:

optionally, S201, the network device sends configuration information to the terminal device. Correspondingly, the terminal device receives configuration information from the network device.

And S202, the network equipment sends scheduling information to the terminal equipment. Correspondingly, the terminal device receives the scheduling information from the network device.

And S203, the terminal equipment performs data transmission in the first cell according to the scheduling information.

The embodiment shown in fig. 7 differs from the embodiment shown in fig. 5 in that:

the first BWP in the embodiment shown in fig. 7 may be an enhanced dormancy BWP (enhanced dormant BWP) and the first BWP in the embodiment of fig. 5 may be a new type BWP. Enhanced dormant BWP may be understood as enhancing the above-mentioned "2, dormant BWP", which is applied to the secondary cell in the active state, and increased dormant BWP, which may be applied to the secondary cell in the inactive state.

Further, the network device may add type indication information to the configuration information when configuring the first BWP of the first cell, where the type indication information is used to indicate whether the dormant BWP is an enhanced dormant BWP. For example, the type indication information may be represented by a bit, where when the bit has a value of 1, it indicates that the first BWP in the configuration information is an enhanced dormant BWP; when the value of the bit is 0, it indicates that the first BWP in the configuration information is "2" or "sleep BWP".

When the first BWP in the configuration information is the enhanced dormant BWP, the network device may not set the state of the first cell to the active state, but set the state of the first cell to the inactive state. Alternatively, when the first BWP in the configuration information is the enhanced dormant BWP, if the active BWP is the enhanced dormant BWP, the state of the default first cell is the deactivated state.

In the embodiment shown in fig. 7, in case the network device configures the enhanced dormant BWP of the first cell in the deactivated state, the terminal device may not perform some operations in the first cell to reduce unnecessary operations of the terminal device with respect to the first cell, thereby saving power consumption; when receiving the scheduling information, the terminal equipment performs data transmission in the first cell in the deactivation state, so that the data transmission can be performed with low power consumption in the first cell in the deactivation state.

As an optional embodiment, the network device does not send the scheduling information, and the terminal device performs data transmission in the first cell according to the preconfigured resource, which can be specifically described in step S102', and will not be described herein.

Referring to fig. 8, a flow chart of a data transmission method according to another embodiment of the application is shown, and the flow chart specifically includes the following steps:

s301, the network device sends scheduling information to the terminal device. Correspondingly, the terminal device receives the scheduling information from the network device.

The network device may schedule the terminal device to perform data transmission in the first cell in the third state. The network device may schedule the terminal device for data transmission in the first cell in the third state by sending scheduling information to the terminal device.

The scheduling information may be DCI for scheduling data transmission on the first cell. The scheduling information is used for scheduling data transmissions on the first cell, and may also be described as scheduling information for scheduling data transmissions of the first cell (DCI is used for the scheduling of PUSCH and/or PDSCH in one cell), or scheduling information for indicating use of resources of the first cell for data transmissions, etc.

The state of the first cell is a third state, and the operation of the terminal device for the first cell may include one or more of:

monitoring PDCCH for the first cell;

not listening for PDCCH in the first cell;

not transmitting SRS in the first cell;

not transmitting RACH in the first cell;

not sending CSI reports for the first cell; not transmitting the CSI report for the first cell may include not transmitting the CSI report on the first cell and not transmitting the CSI report for the first cell on other cells than the first cell;

RRM measurements are not made in the first cell; further, the terminal device does not report the RRM measurement result; if the RRM measurement is performed in the first cell, the terminal equipment can not report the RRM measurement result in the first cell;

RLM measurements are not made in the first cell;

BFD measurements are not made in the first cell;

beam management is not performed in the first cell;

timing synchronization is not performed in the first cell;

frequency synchronization is not performed in the first cell;

not AGC in the first cell;

uplink transmission in the first cell, e.g. transmission of UL-SCH, and/or transmission of PUCCH; further, under the condition that uplink transmission configuration information or uplink transmission scheduling information is received, uplink transmission is performed in the first cell; or alternatively

Downlink reception, e.g. PDSCH reception, in the first cell; further, in the case of receiving the downlink configuration information or the downlink scheduling information, downlink reception is performed in the first cell.

It should be noted that, the operations of the terminal device with respect to the first cell in the third state are used as examples, and as the standard evolves, the operations may be added or subtracted.

The transition between the third state, the deactivated state and the activated state is shown with reference to fig. 9.

1. Transition between third state and active state:

the network device may send state switching information to the terminal device indicating that the state of the first cell is switched from the active state to the third state. In the case that the terminal device switches the state of the first cell to the third state, the operations of the first cell for the third state may be referred to in the above detailed description, for example, beam management is not performed in the first cell, RRM measurement is not performed in the first cell, and so on.

The network device may send state switching information to the terminal device indicating that the state of the first cell is switched from the third state to the active state. Under the condition that the state of the first cell is switched to the active state by the terminal equipment, corresponding operation can be carried out on the first cell according to the configuration of the network equipment. For example, the network device is configured with a carrier management operation, and the terminal device may perform the carrier management operation. The carrier management operations may include one or more of the following: an SRS is transmitted in a first cell, a RACH is transmitted in the first cell, a CSI report is transmitted for the first cell, beam management is performed in the first cell, timing synchronization is performed in the first cell, frequency synchronization is performed in the first cell, AGC is performed in the first cell, or the like.

In one implementation, the transition between the third state and the active state may be triggered by the network device according to the communication condition of the first cell. For example, if the network device considers that the communication quality of the first cell in the third state is unstable or does not reach the threshold value, the state of the first cell may be switched from the third state to the active state, so that the terminal device performs the carrier management operation on the first cell, thereby effectively maintaining the communication of the first cell. For another example, if the network device considers that the communication quality of the first cell in the active state is better or more stable, the state of the first cell may be switched from the active state to the third state, so as to reduce the power consumption of the terminal device.

In another implementation, the transition between the third state and the active state may be triggered by a timer. For example, triggered by a timer, when the state of the first cell is switched from the third state to the active state, the timer is started, and when the timer times out, the state of the first cell is switched from the active state to the third state; when the state of the first cell is switched from the active state to the third state, the timer is started, and when the timer is overtime, the state of the first cell is switched from the third state to the active state. For another example, the method is triggered by 2 timers, the third state corresponds to one timer, the active state corresponds to one timer, when the state of the first cell is switched from the third state to the active state, the timer corresponding to the active state is started, and when the timer corresponding to the active state is overtime, the state of the first cell is switched from the active state to the third state; when the state of the first cell is switched from the activated state to the third state, starting a timer corresponding to the third state, and switching the state of the first cell from the third state to the activated state when the timer corresponding to the third state is overtime.

2. Transition between the third state and the deactivated state:

In case one, the protocol may specify that the third state and the deactivated state cannot be mutually switched. The transition between the third state and the deactivated state may not be considered, since the terminal device may not only avoid unnecessary operations but also perform data transmission as required in the third state.

In case two, the transition between the third state and the deactivated state is similar to the transition between the third state and the activated state.

The network device may send state switching information to the terminal device indicating that the state of the first cell is switched from the deactivated state to the third state. In the case that the terminal device switches the state of the first cell to the third state, the specific description above may be referred to for multiple operations of the first cell in the third state, for example, the first cell monitors the PDCCH, and performs data transmission in the first cell according to the scheduling information.

The network device may send state switching information to the terminal device indicating that the state of the first cell is switched from the third state to the deactivated state. Under the condition that the state of the first cell is switched to the deactivation state, the terminal equipment does not monitor the PDCCH for the first cell any more and does not transmit data in the first cell.

In one implementation, the transition between the third state and the deactivated state may be triggered by the network device according to the traffic situation of the first cell. For example, if the network device considers that the current service of the terminal device does not need to use the first cell in the third state, the state of the first cell may be switched from the third state to the deactivated state, so that the terminal device does not monitor the scheduling information for the first cell on other cells than the first cell. Further, since the state of the first cell is switched to the deactivated state, the terminal device may not perform data transmission in the first cell, and may further close the transmission module, so as to save power consumption. For another example, the network device considers that the current service of the terminal device needs to use the first cell in the third state, so that the state of the first cell can be switched from the deactivated state to the third state, unnecessary operations can be avoided, and data transmission can be performed as required.

In another implementation, the transition between the third state and the deactivated state may be triggered by a timer. For example, triggered by a timer, when the state of the first cell is switched from the third state to the deactivated state, the timer is started, and when the timer times out, the state of the first cell is switched from the deactivated state to the third state; when the state of the first cell is switched from the deactivated state to the third state, the timer is started, and when the timer is overtime, the state of the first cell is switched from the third state to the deactivated state. For another example, the method comprises the steps that 2 timers trigger, the third state corresponds to one timer, the deactivation state corresponds to one timer, when the state of the first cell is switched from the third state to the deactivation state, the timer corresponding to the deactivation state is started, and when the timer corresponding to the deactivation state is overtime, the state of the first cell is switched from the deactivation state to the third state; when the state of the first cell is switched from the deactivated state to the third state, starting a timer corresponding to the third state, and switching the state of the first cell from the third state to the deactivated state when the timer corresponding to the third state is overtime.

The above state switching information may be carried in DCI, or in MAC-CE, or in RRC message, or in other signaling.

3. The transition between the active state and the inactive state may be referred to the description of the associated protocol.

S302, the terminal equipment performs data transmission in the first cell according to the scheduling information.

And the terminal equipment can perform data transmission in the first cell according to the scheduling information under the condition of receiving the scheduling information.

Optionally, the terminal device may perform data transmission through a transmission module corresponding to the first cell. For example, before or when the terminal device starts to send uplink data, starting a transmission module corresponding to the first cell; or when the terminal equipment monitors PDCCH of the dispatching PDSCH or the PUSCH, starting a transmission module corresponding to the first cell. Wherein the transmission module is for example an RF module or a radio frequency device or the like. In one implementation, when the terminal device starts a transmission module corresponding to the first cell, a timer corresponding to the first cell is started, and when data transmission exists, the timer corresponding to the first cell is restarted. In another implementation manner, the terminal device starts a transmission module corresponding to the first cell, starts a timer corresponding to the first cell at a starting time of data transmission, and restarts the timer corresponding to the first cell when data transmission exists. It can be understood that the time of starting the transmission module corresponding to the first cell may be the same or different from the starting time of data transmission, and further the time of starting the transmission module corresponding to the first cell may be the same or different from the time of starting the timer corresponding to the first cell, for example, the transmission module corresponding to the first cell is started first, and the timer corresponding to the first cell is started when data transmission is performed. When the timer corresponding to the first cell is overtime, the terminal device can consider that the transmission is finished or no subsequent transmission exists temporarily, and then the data transmission can be stopped, and further, the transmission module corresponding to the first cell can be closed. The specific timing duration of the timer corresponding to the first cell may be preconfigured, or predefined by a protocol, or configured by the network device.

The network device may send end of transmission indication information to the terminal device. The transmission end indication information may be carried in DCI, or in MAC-CE, or in other signaling. The terminal device receives the transmission end indication information, and can consider that the transmission is ended, and then stops the data transmission. Optionally, the terminal device may close a transmission module corresponding to the first cell. Before or during data transmission, the terminal device starts a transmission module corresponding to the first cell, and when the data transmission is finished, the terminal device closes the transmission module corresponding to the first cell, so that unnecessary power consumption can be reduced, and transmission efficiency is improved.

For a network device, the time interval between the time of sending the scheduling information and the time of starting data transmission (e.g., downlink allocation or uplink grant) is K time units, where K is a positive integer. The sending time of the scheduling information can be determined by the time domain resources occupied by the scheduling information, and the starting time of the data transmission can be determined by the time domain resources of the PDSCH or the PUSCH. Correspondingly, for the terminal device, the time interval between the receiving time of the scheduling information and the starting time of the data transmission is K time units. Under the condition that the transmission delay is negligible, the sending time of the scheduling information is the receiving time of the scheduling information.

In one implementation, the scheduling information may be used to schedule the terminal device for data transmission in the first cell in the third state on the second cell. It is understood that the network device transmits scheduling information in the second cell, and it is understood that the network device transmits scheduling information for the first cell on the resources of the second cell. The relationship between the carrier of the first cell and the carrier of the second cell may refer to the specific description in step S103, and will not be described herein.

Optionally, the terminal device sends third information to the network device, so that the network device determines which cells or cell groups to set to the third state.

Wherein the third information indicates one or more cells that can be set to the third state, or the third information indicates one or more cell groups that can be set to the third state. It will be appreciated that the third information indicates that the terminal device tends or suggests which cells the network device sets to the third state or which groups of cells to set to the third state. The advice of the terminal device may or may not be taken by the network device in its entirety or in part. The state of a certain cell group is set to the third state, and it can be understood that the state of all cells in the cell group is the third state. For example, the third information indicates that the cells in which the third state can be set include the secondary cell 1, the secondary cell 2, and the secondary cell 3, and the network device can set the state of the secondary cell 1 to the third state. For another example, the third information indicates that the cell group that can set the third state includes cell group 1 and cell group 2, where cell group 1 includes secondary cell 1 and secondary cell 2, cell group 2 includes secondary cell 3, secondary cell 4, and secondary cell 5, and the network device can set the states of secondary cell 1 and secondary cell 2 to the third state.

In the embodiment shown in fig. 8, in the case that the state of the first cell is the third state, the terminal device may not perform some operations in the first cell, so as to reduce unnecessary operations performed by the terminal device for the first cell, thereby saving power consumption; when receiving the scheduling information, the terminal device performs data transmission in the first cell in the third state, so that the data transmission can be performed with low power consumption in the first cell in the third state.

Optionally, before step S301, the network device may further send configuration information to the terminal device, where the configuration information is used to configure a third BWP of the first cell, and the third BWP is used for data transmission by the terminal device in the first cell in the third state. In one implementation, the third BWP may be the first BWP in the embodiment shown in fig. 5, or the first BWP in the embodiment shown in fig. 7. In another implementation, the third BWP may be a BWP configured by the network device for the terminal device, which is not a new type of BWP, nor an enhanced dormant BWP, in other words, the third BWP is independent of the first BWP in the embodiment shown in fig. 5, and is independent of the first BWP in the embodiment shown in fig. 7, which may be understood as a BWP configured by the network device in the prior art.

Optionally, the terminal device may further send fourth information to the network device indicating one or more cells of the configurable fourth BWP or indicating one or more cell groups of the configurable fourth BWP. It is to be understood that the fourth BWP generally refers to the BWP supported by the terminal device and used for data transmission in the first cell in the third state, i.e. the fourth BWP is the BWP that the terminal device can use for data transmission in the first cell in the third state. That is, the terminal device suggests for which cells or which cell groups the network device configures the fourth BWP, further suggests for which cells of the third state the network device configures the fourth BWP, or for which cell groups of the third state the network device configures the fourth BWP. The fourth information and the third information may be sent in the same message, or in different messages.

As an alternative embodiment, the network device does not send scheduling information, and the terminal device performs data transmission according to the first cell with the preconfigured resource in the third state. It will be appreciated that the pre-configured resources may be used for data transmission by the terminal device in the first cell in the third state. The pre-configured resources may be time-frequency resources. Alternatively, the pre-configured resource may be periodic, and the terminal device may further use the pre-configured resource to perform data transmission in the first cell in the third state periodically. Alternatively, the frequency domain range of the pre-configured resource may be the frequency domain range of the third BWP or the frequency domain range of the pre-configured resource may be within the frequency domain range of the third BWP.

It should be understood that in the above embodiments, the terminal device and/or the network device may perform some or all of the steps in the embodiments. These steps or operations are merely examples, and embodiments of the present application may perform other operations or variations of the various operations. Furthermore, the various steps may be performed in a different order than presented in the various embodiments, and it is possible that not all of the operations in the embodiments of the application may be performed. The sequence number of each step does not mean the sequence of execution sequence, and the execution sequence of each process should be determined by its function and internal logic, and should not be limited in any way to the implementation process of the embodiment of the present application.

In order to implement the data transmission method provided by the embodiment of the present application, the terminal device and the network device may respectively include a hardware structure and a software module, and each function may be implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of a hardware structure and a software module.

In one form of communication between a terminal device and a network device shown in fig. 10, as shown in fig. 10, terminal device 110 includes a processor 101, a memory 102, and a transceiver 103, with transceiver 103 including a transmitter 1031, a receiver 1032, and an antenna 1033. The network device 120 includes a processor 201, a memory 202, and a transceiver 203, the transceiver 203 including a transmitter 2031, a receiver 2032, and an antenna 2033. Receiver 1032 may be used for receiving messages transmitted by network device 120 via antenna 1033 and transmitter 1031 may be used for transmitting messages to network device 120 via antenna 1033. A transmitter 2031 may be used for transmitting messages to terminal device 110 via antenna 2033 and a receiver 2032 may be used for receiving messages transmitted by terminal device 110 via antenna 2033.

Fig. 11 and 12 are schematic structural diagrams of a possible communication device according to an embodiment of the present application. These communication devices may be used to implement the functions of the terminal device or the network device in the above method embodiments, so that the beneficial effects of the above method embodiments may also be implemented.

The communication apparatus 1100 shown in fig. 11 may include a communication unit 1101 and a processing unit 1102. The communication unit 1101 may include a transmission unit for implementing a transmission function and/or a reception unit for implementing a reception function, and the communication unit 1101 may implement the transmission function and/or the reception function. The communication unit may also be described as a transceiver unit.

The communication device 1100 may be a terminal device, a device in a terminal device, or a device having a function of a terminal device. In one embodiment, the communication apparatus 1100 may perform the operations related to the terminal device in the embodiments shown in fig. 5 to 8.

A communication unit 1101 for receiving scheduling information for scheduling data transmission on the first cell; the state of the first cell is a deactivated state or a third state, the third state being different from the deactivated state and the activated state; and carrying out data transmission in the first cell according to the scheduling information.

Optionally, the processing unit 1102 is configured to monitor the PDCCH for the first cell, and not monitor the PDCCH in the first cell.

Optionally, the processing unit 1102 is configured to perform one or more of the following:

transmitting no sounding reference signal in the first cell;

not transmitting a random access channel in the first cell;

not transmitting a channel state information report for the first cell;

not making radio resource management measurements in the first cell;

not performing radio link monitoring measurements in the first cell;

not making beam failure detection measurements in the first cell;

not performing beam management in the first cell;

timing synchronization is not performed in the first cell;

not frequency synchronized in the first cell;

the automatic gain control is not performed in the first cell.

Optionally, the communication unit 1101 is specifically configured to perform data transmission through a transmission module corresponding to the first cell according to the scheduling information.

Optionally, the time interval between the time of receiving the scheduling information and the starting time of the data transmission is K time units, and K is a positive integer.

Optionally, the communication unit 1101 is further configured to send first information, where the first information is used to determine the value of K.

Optionally, the processing unit 1102 is further configured to stop data transmission according to transmission end indication information from the network device; or stopping data transmission when the timer corresponding to the first cell is overtime.

Optionally, the communication unit 1101 is further configured to receive configuration information, where the configuration information is used to configure a first frequency domain resource of the first cell; the first frequency domain resource is used for data transmission of the terminal equipment in a first cell in a deactivated state or a first cell in a third state.

Optionally, the processing unit 1102 is further configured to stop data transmission when the timer corresponding to the first frequency domain resource expires.

Optionally, the communication unit 1101 is further configured to send second information, where the second information indicates one or more cells capable of configuring the second frequency domain resource, or the second information indicates one or more cell groups capable of configuring the second frequency domain resource;

the second frequency domain resource is a resource that the terminal equipment can perform data transmission in the first cell in the deactivated state or the first cell in the third state.

Optionally, the communication unit 1101 is further configured to send third information, where the third information indicates one or more cells that can be set to the third state, or the third information indicates one or more cell groups that can be set to the third state.

Optionally, the communication unit 1101 is further configured to receive status switching information; the state switching information indicates that the state of the first cell is switched from a third state to an active state; or, the state switching information indicates that the state of the first cell is switched from the third state to the deactivated state; or, the state switching information indicates that the state of the first cell is switched from the active state to the third state; or, the state switching information indicates that the state of the first cell is switched from the deactivated state to the third state.

Optionally, the communication unit 1101 is specifically configured to receive scheduling information in the second cell; the first cell is a main cell, and the second cell is an auxiliary cell; or the first cell is a secondary cell, and the second cell is a primary cell; or the first cell is an auxiliary cell, and the second cell is an auxiliary cell; or, the first cell is an anchor cell, and the second cell is a non-anchor cell.

Optionally, the carrier of the first cell is different from the carrier of the second cell; the measurement result corresponding to the carrier wave of the first cell is the same as the measurement result corresponding to the carrier wave of the second cell; or, a difference between the measurement result corresponding to the carrier of the first cell and the measurement result corresponding to the carrier of the second cell is less than or equal to a first threshold; or the timing result corresponding to the carrier of the first cell is the same as the timing result corresponding to the carrier of the second cell; or, a difference between the timing result corresponding to the carrier of the first cell and the timing result corresponding to the carrier of the second cell is less than or equal to the second threshold.

The communication apparatus 1100 may be a network device, an apparatus in a network device, or an apparatus having a function of a network device. In one embodiment, the communication apparatus 1100 may perform the operations related to the network device in the embodiments shown in fig. 5 to 8.

A communication unit 1101, configured to send scheduling information, where the scheduling information is used to schedule data transmission in the first cell; the state of the first cell is a deactivated state or a third state, the third state being different from the deactivated state and the activated state.

Optionally, the processing unit 1102 is configured to determine, according to the first information from the terminal device, that a time interval between a sending time of the scheduling information and a starting time of the data transmission is K time units, where K is a positive integer.

Optionally, the communication unit 1101 is further configured to send transmission end indication information, where the transmission end indication information is used to indicate to stop data transmission; or, the method is further used for sending configuration information, the configuration information is used for configuring a first frequency domain resource of the first cell, and the first frequency domain resource is used for data transmission of the terminal equipment in the first cell in the deactivated state or the first cell in the third state.

Optionally, the communication unit 1101 is further configured to receive second information, where the second information indicates one or more cells capable of configuring the second frequency domain resource, or the second information indicates one or more cell groups capable of configuring the second frequency domain resource;

Optionally, the communication unit 1101 is further configured to receive third information, where the third information indicates one or more cells that can be set to the third state, or the third information indicates one or more cell groups that can be set to the third state.

Optionally, the communication unit 1101 is further configured to send status switching information; the state switching information indicates that the state of the first cell is switched from a third state to an active state; or, the state switching information indicates that the state of the first cell is switched from the third state to the deactivated state; or, the state switching information indicates that the state of the first cell is switched from the active state to the third state; or, the state switching information indicates that the state of the first cell is switched from the deactivated state to the third state.

Optionally, the communication unit 1101 is specifically configured to send scheduling information in the second cell; the first cell is a main cell, and the second cell is an auxiliary cell; or the first cell is a secondary cell, and the second cell is a primary cell; or the first cell is an auxiliary cell, and the second cell is an auxiliary cell; or, the first cell is an anchor cell, and the second cell is a non-anchor cell.

Optionally, the carrier of the first cell is different from the carrier of the second cell, and the measurement result corresponding to the carrier of the first cell is the same as the measurement result corresponding to the carrier of the second cell; or, a difference between the measurement result corresponding to the carrier of the first cell and the measurement result corresponding to the carrier of the second cell is less than or equal to a first threshold; or the timing result corresponding to the carrier of the first cell is the same as the timing result corresponding to the carrier of the second cell; or, a difference between the timing result corresponding to the carrier of the first cell and the timing result corresponding to the carrier of the second cell is less than or equal to the second threshold.

The communication device 1200 shown in fig. 12 may include a processor 1201 and interface circuit 1202. The processor 1201 and the interface circuit 1202 are coupled to each other. It is to be appreciated that the interface circuit 1202 may be an interface circuit or an input-output interface. Optionally, the communication device 1200 may further comprise a memory 1203 for storing instructions to be executed by the processor 1201 or for storing input data required for the processor 1201 to execute the instructions or for storing data generated after the processor 1201 executes the instructions.

For example, the communication apparatus 1200 may be a terminal device: the interface circuit 1202 is configured to execute steps S101 to S103 in fig. 5, or execute steps S101 'and S102' in fig. 6, or execute steps S201 to S203 in fig. 7, or execute steps S301 and S302 in fig. 8.

For example, the communication apparatus 1200 may be a network device: the interface circuit 1202 is configured to execute S101 to S103 in fig. 5, or execute step S101 'and step S102' in fig. 6, or execute step S201 to step S203 in fig. 7, or execute step S301 and step S302 in fig. 8.

When the communication device is a chip applied to the terminal device, the chip of the terminal device realizes the functions of the terminal device in the method embodiment. The chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent to the terminal device by the network device; alternatively, the chip sends information to other modules in the terminal device (e.g., radio frequency modules or antennas), which the terminal device sends to the network device.

When the communication device is a chip applied to the network device, the chip of the network device realizes the functions of the network device in the method embodiment. The chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent to the network device by the terminal device; alternatively, the chip sends information to other modules (e.g., radio frequency modules or antennas) in the network terminal device, which information is sent by the network device to the terminal device.

It is to be appreciated that the processor in embodiments of the application may be a central processing unit (central processing unit, CPU), other general purpose processor, digital signal processor (digital signal processor, DSP), application specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, but in the alternative, it may be any conventional processor. When the equipment (terminal equipment or network equipment) sends information, the information is output through an interface circuit of the chip; when the device receives information, it inputs information to the interface circuit of the chip.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by executing software instructions by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, removable disk, compact disk-read-only memory (compact disc read-only memory), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device or terminal device. The processor and the storage medium may reside as discrete components in a network device or terminal device.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as digital video discs; but also semiconductor media such as solid state disks. The computer readable storage medium may be volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage medium.

In various embodiments of the application, where no special description or logic conflict exists, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments based on their inherent logic.

Claims

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

receiving scheduling information, wherein the scheduling information is used for scheduling data transmission on a first cell; the state of the first cell is a deactivated state or a third state, the third state being different from the deactivated state and the activated state;

and carrying out data transmission in the first cell according to the scheduling information.

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

and monitoring a Physical Downlink Control Channel (PDCCH) for the first cell, and not monitoring the PDCCH in the first cell.

3. The method of claim 1, further comprising one or more of the following:

not transmitting a sounding reference signal in the first cell;

not transmitting a random access channel in the first cell;

not transmitting a channel state information report for the first cell;

Not making radio resource management measurements at the first cell;

not performing radio link monitoring measurements at the first cell;

not making beam failure detection measurements at the first cell;

not performing beam management in the first cell;

not performing timing synchronization in the first cell;

not frequency synchronized at the first cell; or alternatively

And not performing automatic gain control in the first cell.

4. A method according to any one of claims 1 to 3, wherein said transmitting data in said first cell according to said scheduling information comprises:

and according to the scheduling information, carrying out data transmission through a transmission module corresponding to the first cell.

5. The method of claim 4, wherein a time interval between a time of receipt of the scheduling information and a time of start of the data transmission is K time units, the K being a positive integer.

6. The method of claim 5, wherein the method further comprises:

and sending first information, wherein the first information is used for determining the value of the K.

7. The method according to any one of claims 1 to 6, further comprising:

Stopping the data transmission according to the transmission ending indication information from the network equipment; or alternatively, the first and second heat exchangers may be,

and stopping the data transmission under the condition that the timer corresponding to the first cell is overtime.

8. The method according to any one of claims 1 to 6, further comprising at least one of:

receiving configuration information, wherein the configuration information is used for configuring first frequency domain resources of the first cell;

or alternatively, the first and second heat exchangers may be,

stopping the data transmission under the condition that a timer corresponding to the first frequency domain resource is overtime;

the first frequency domain resource is used for data transmission of the terminal equipment in the first cell in the deactivated state or the first cell in the third state.

9. The method according to any one of claims 1 to 8, further comprising:

transmitting second information indicating one or more cells in which the second frequency domain resource is configurable, or indicating one or more cell groups in which the second frequency domain resource is configurable;

the second frequency domain resource is a resource that the terminal device can perform data transmission in the first cell in the deactivated state or the first cell in the third state.

10. The method according to any one of claims 1 to 9, further comprising:

third information is sent indicating one or more cells that may be set to the third state or indicating one or more cell groups that may be set to the third state.

11. The method according to any one of claims 1 to 10, further comprising:

receiving state switching information; the state switching information indicates that the state of the first cell is switched from the third state to the active state; or, the state switching information indicates that the state of the first cell is switched from the third state to the deactivated state; or, the state switching information indicates that the state of the first cell is switched from the active state to the third state; or, the state switching information indicates that the state of the first cell is switched from the deactivated state to the third state.

12. The method according to any one of claims 1 to 11, wherein receiving scheduling information comprises:

receiving the scheduling information in a second cell; the first cell is a main cell, and the second cell is an auxiliary cell; or, the first cell is a secondary cell, and the second cell is a primary cell; or, the first cell is a secondary cell, and the second cell is a secondary cell; or, the first cell is an anchor cell, and the second cell is a non-anchor cell.

13. The method of claim 12, wherein the carrier of the first cell is different from the carrier of the second cell; the measurement result corresponding to the carrier wave of the first cell is the same as the measurement result corresponding to the carrier wave of the second cell; or, a difference between the measurement result corresponding to the carrier of the first cell and the measurement result corresponding to the carrier of the second cell is smaller than or equal to a first threshold; or the timing result corresponding to the carrier of the first cell is the same as the timing result corresponding to the carrier of the second cell; or, a difference between the timing result corresponding to the carrier of the first cell and the timing result corresponding to the carrier of the second cell is less than or equal to a second threshold.

14. A method of data transmission, the method comprising:

transmitting scheduling information, wherein the scheduling information is used for scheduling data transmission in a first cell; the state of the first cell is a deactivated state or a third state, the third state being different from the deactivated state and the activated state.

15. The method of claim 14, wherein the method further comprises:

according to the first information from the terminal equipment, the time interval between the sending time of the scheduling information and the starting time of the data transmission is determined to be K time units, wherein K is a positive integer.

16. The method of claim 14, further comprising at least one of:

transmitting transmission end indication information, wherein the transmission end indication information is used for indicating to stop the data transmission;

or, transmitting configuration information, where the configuration information is used to configure a first frequency domain resource of the first cell, where the first frequency domain resource is used for data transmission of the terminal device in the first cell in the deactivated state or the first cell in the third state.

17. The method according to any one of claims 14 to 16, further comprising:

receiving second information indicating one or more cells in which second frequency domain resources are configurable, or indicating one or more cell groups in which second frequency domain resources are configurable;

18. The method according to any one of claims 14 to 17, further comprising:

third information is received, the third information indicating one or more cells settable to the third state, or the third information indicating one or more cell groups settable to the third state.

19. The method according to any one of claims 14 to 18, further comprising:

transmitting state switching information; the state switching information indicates that the state of the first cell is switched from the third state to the active state; or, the state switching information indicates that the state of the first cell is switched from the third state to the deactivated state; or, the state switching information indicates that the state of the first cell is switched from the active state to the third state; or, the state switching information indicates that the state of the first cell is switched from the deactivated state to the third state.

20. The method according to any one of claims 14 to 19, wherein the transmitting scheduling information comprises:

transmitting the scheduling information in a second cell; the first cell is a main cell, and the second cell is an auxiliary cell; or, the first cell is a secondary cell, and the second cell is a primary cell; or, the first cell is a secondary cell, and the second cell is a secondary cell; or, the first cell is an anchor cell, and the second cell is a non-anchor cell.

21. The method of claim 20, wherein the carrier of the first cell is different from the carrier of the second cell, and wherein the measurement result corresponding to the carrier of the first cell is the same as the measurement result corresponding to the carrier of the second cell; or, a difference between the measurement result corresponding to the carrier of the first cell and the measurement result corresponding to the carrier of the second cell is smaller than or equal to a first threshold; or the timing result corresponding to the carrier of the first cell is the same as the timing result corresponding to the carrier of the second cell; or, a difference between the timing result corresponding to the carrier of the first cell and the timing result corresponding to the carrier of the second cell is less than or equal to a second threshold.

22. A communication device comprising means for performing the method of any one of claims 1 to 13 or means for performing the method of any one of claims 14 to 21.

23. A communication device comprising a processor and interface circuitry for receiving signals from other communication devices than the communication device and transmitting to the processor or sending signals from the processor to other communication devices than the communication device, the processor being configured to implement the method of any one of claims 1 to 13 or to implement the method of any one of claims 14 to 21 by logic circuitry or execution of code instructions.

24. A computer readable storage medium, characterized in that the storage medium has stored therein a computer program or instructions which, when executed by a communication device, implement the method of any of claims 1 to 13 or the method of any of claims 14 to 21.

25. A computer program product comprising a computer program or instructions which, when executed by a communications device, performs the method of any one of claims 1 to 13 or performs the method of any one of claims 14 to 21.