CN114762449A - Method, device, terminal and storage medium for reporting channel state information - Google Patents

Method, device, terminal and storage medium for reporting channel state information Download PDF

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Publication number
CN114762449A
CN114762449A CN202080077082.3A CN202080077082A CN114762449A CN 114762449 A CN114762449 A CN 114762449A CN 202080077082 A CN202080077082 A CN 202080077082A CN 114762449 A CN114762449 A CN 114762449A
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drx
csi
group
report
reporting
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CN114762449B (en
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石聪
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The application discloses a method, a device, a terminal and a storage medium for reporting channel state information, and relates to the field of wireless communication. The method comprises the following steps: determining whether to report CSI or not according to whether the measured CSI reference signal is located in the activation period of the first DRX group or not; reporting the CSI on a time domain position of a second DRX group under the condition of determining to report the CSI; wherein the first DRX group is one of the at least two DRX groups and the second DRX group is another one of the at least two DRX groups. When the terminal equipment is configured with at least two DRX groups, the terminal equipment can determine whether to report the CSI according to whether the measured CSI reference signal is located at Active Time or not, so that the accuracy of transmission is guaranteed.

Description

Method, device, terminal and storage medium for reporting channel state information Technical Field
The present application relates to the field of wireless communications, and in particular, to a method, an apparatus, a terminal, and a storage medium for reporting channel state information.
Background
In a New Radio (NR) of 5G, the network device may configure a Discontinuous Reception (DRX) function for the terminal device. The terminal device may report Channel State Information (CSI) in DRX Active Time (Active Time), so that the network device can obtain a Channel condition and an interference condition of downlink transmission.
Before reporting CSI, the terminal device needs to measure a downlink transmission channel through a CSI reference signal (CSI-RS). To enhance DRX, NR Rel-16 discusses the DRX by: for a Media Access Control (MAC) entity, configuring one DRX group (group) is changed to configuring two DRX groups. Each DRX group has its corresponding Active Time (Active Time), and each DRX group may correspond to one or more carriers (carriers).
For the configuration of the two DRX groups, the carrier reporting CSI and the measured carrier may be in different DRX groups, and whether the two carriers are in the active period is also different. For the problem of whether the terminal device needs to report the CSI, the related art has not provided a good solution.
Disclosure of Invention
When the terminal equipment is configured with at least two DRX groups, the terminal equipment can determine whether CSI needs to be reported according to whether a measured CSI reference signal is in an active period or not. The technical scheme is as follows.
According to an aspect of the present application, a method for reporting channel state information is provided, which is applied to a terminal device, where the terminal device is configured with at least two DRX groups, and the method includes:
Determining whether to report CSI or not according to whether the measured CSI reference signal is located in the activation period of the first DRX group or not;
reporting the CSI on a time domain position of a second DRX group under the condition that the CSI is determined to be reported;
wherein the first DRX group is one of the at least two DRX groups, and the second DRX group is another one of the at least two DRX groups.
According to an aspect of the present application, an apparatus for reporting channel state information is provided, where the apparatus is applied to a terminal device, and the terminal device is configured with at least two DRX groups, and the apparatus includes: the device comprises a determining module and a reporting module;
the determining module is configured to determine whether to report the CSI according to whether the measured CSI reference signal is located in an active period of the first DRX group;
the reporting module is configured to report the CSI at a time domain position of a second DRX group, if it is determined to report the CSI;
wherein the first DRX group is one of the at least two DRX groups, and the second DRX group is another one of the at least two DRX groups.
According to an aspect of the present application, there is provided a terminal, including: a processor; a transceiver coupled to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for reporting channel state information according to the above aspect.
According to an aspect of the present application, there is provided a computer-readable storage medium, in which executable instructions are stored, and the executable instructions are loaded and executed by a processor to implement the method for reporting channel state information according to the above aspect.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
when the terminal equipment is configured with at least two DRX groups, the terminal equipment can determine whether to report the CSI according to whether the measured CSI reference signal is positioned at Active Time or not, so that the terminal equipment can effectively report the CSI according to the method, the condition that the terminal equipment cannot judge whether the CSI needs to be reported or not because the measured CSI and the reported CSI are positioned in different DRX groups is avoided, and the transmission accuracy is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Figure 1 is a schematic diagram of a DRX cycle;
figure 2 is a schematic diagram of a DRX cycle;
FIG. 3 is a block diagram of a communication system provided in an exemplary embodiment of the present application;
fig. 4 is a flowchart of a reporting method of channel state information according to an exemplary embodiment of the present application;
fig. 5 is a flowchart of a reporting method of channel state information according to an exemplary embodiment of the present application;
fig. 6 is a diagram illustrating reporting of channel state information according to an exemplary embodiment of the present application;
fig. 7 is a flowchart of a reporting method of channel state information according to an exemplary embodiment of the present application;
fig. 8 is a diagram illustrating reporting of channel state information according to an exemplary embodiment of the present application;
fig. 9 is a block diagram of an apparatus for reporting channel state information according to an exemplary embodiment of the present application;
fig. 10 is a schematic structural diagram of a terminal according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
First, terms referred to in the embodiments of the present application are briefly described:
channel State Information (CSI): is a channel attribute of the communication link. It describes the fading factor of the signal on each transmission path, i.e. the value of each element in the channel gain matrix H, such as signal Scattering (Scattering), fading or fading, distance fading (power fading) and other information. The CSI may adapt the communication system to the current channel conditions, providing a guarantee for high reliability and high rate communication in a multi-antenna system.
Discontinuous Reception (DRX): DRX can allow the terminal to periodically enter a sleep period at some time without monitoring Physical Downlink Control Channel (PDCCH) scheduling information (or PDCCH subframe). And when the terminal needs to monitor the PDCCH scheduling information, the terminal wakes up from the sleep period, so that the terminal can achieve the purpose of saving power.
The basic mechanism of DRX is to configure one DRX cycle (DRX cycle) for a terminal in a Radio Resource Control CONNECTED (RRC _ CONNECTED) state. The DRX cycle is composed of "active state (On Duration)" and "dormant state (Opportunity for DRX)": in the time of the 'activated state', the terminal monitors and receives PDCCH scheduling information; in the 'dormant state' time, the terminal does not receive the data of the downlink channel so as to save power consumption. As can be seen from fig. 1, in the time domain, time is divided into successive DRX cycles (cycles). When the terminal receives a scheduling message during the active state, the terminal starts a DRX Inactivity Timer and monitors PDCCH scheduling information in each subframe during the DRX Inactivity Timer; if the DRX-Inactivity Timer is running, the terminal still needs to continue monitoring downlink PDCCH subframes until the DRX-Inactivity Timer times out even if the originally configured On Duration time is over.
One DRX cycle is equal to the sum of the wake-up time, i.e., the duration of the active state in one cycle, and the sleep time, i.e., the duration of the sleep period in one cycle, of the terminal. In the communication system, the system may configure the terminal with a short cycle (short cycle) or a long cycle (long cycle) according to different service scenarios, as shown in fig. 2. The long-period sleep period is longer than the short-period sleep period, or the long-period sleep period is larger than the short-period sleep period. And after the DRX inactive state timer is overtime, if the terminal is configured with a short cycle, the terminal enters the short cycle, otherwise, the terminal enters the long cycle. For a scenario configured with a short period, after the DRX inactivity timer times out, the behavior of the terminal entering the short period is usually that the network sends a large data packet and then sends a series of small data packets, for example, non-real-time services such as web browsing, and a main page is downloaded and then a series of small objects are downloaded. It can be considered as a high active state for a short period.
Fig. 3 shows a block diagram of a communication system provided in an exemplary embodiment of the present application, which may include: access network 12 and terminal device 14.
Several network devices 120 are included in access network 12. Network device 120 may be a base station, which is a device deployed in an access network to provide wireless communication functions for terminals. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functionality may differ, for example in LTE systems, referred to as eNodeB or eNB; in the 5G NR-U system, it is called gNodeB or gNB. The description of "base station" may change as communication technology evolves. For convenience of this embodiment, the above-mentioned apparatuses for providing the terminal device 14 with a wireless communication function are collectively referred to as a network device.
Terminal devices 14 may include a variety of handheld devices, vehicle mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication capabilities, as well as various forms of user equipment, Mobile Stations (MSs), terminals (terminal devices), and so forth. For convenience of description, the above-mentioned devices are collectively referred to as a terminal. The network device 120 and the terminal device 14 communicate with each other via some air interface technology, such as a Uu interface.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD) System, an LTE-Advanced Long Term Evolution (LTE-A) System, a New Radio (New Radio, NR) System, an Evolution System of NR System, an LTE-based Universal Access to Universal Mobile Telecommunications (UMTS) System, a UMTS-U System, a GSM-Universal Mobile telecommunications (UMTS-Universal Mobile telecommunications, UMTS-U System, a GSM-Universal Mobile telecommunications System, a GSM-CDMA System, a WCDMA System, a General Packet Radio Service (GPRS) System, a GPRS System, a LTE-A System, a UMTS-U System, a UMTS-Mobile telecommunications System, a UMTS-integrated Mobile telecommunications System, a UMTS-integrated Radio System, a Mobile telecommunications System, a GSM System, a Mobile telecommunications System, a Mobile Radio System, a, WiMAX) communication system, Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next generation communication system, other communication systems, and the like.
Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technologies, mobile Communication systems will support not only conventional Communication but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), Vehicle-to-Vehicle (V2V) Communication, and Vehicle networking (V2X) system, etc. The embodiments of the present application can also be applied to these communication systems.
Fig. 4 is a flowchart illustrating a reporting method of channel state information according to an exemplary embodiment of the present application, where the method may be applied to a terminal device shown in fig. 3. The method comprises the following steps:
step 410, determining whether to report the CSI according to whether the measured CSI reference signal is located in the active period of the first DRX group;
the network device can configure a DRX function for the terminal device, so that the terminal device can monitor the PDCCH discontinuously, and the purpose of saving the electric quantity of the terminal device is achieved.
In the DRX mode, the network device configures a DRX cycle for the terminal device, where the DRX cycle includes an Active Time (Active Time) and an inactive Time, and in the Active Time, the terminal device monitors and receives a PDCCH, and in the inactive Time, the terminal device enters a sleep state and does not monitor the PDCCH to reduce power consumption of the terminal device.
In a Carrier Aggregation (CA) scenario, a terminal device may be configured with at least two DRX groups, i.e., for one MAC entity, at least two DRX groups. The first DRX group is one of at least two DRX groups.
Optionally, in a CA scenario, there are one Primary Cell (PCell) and at least one Secondary Cell (SCell), and the DRX group a is configured to all serving cells by default. The network device may configure SCell2, SCell3, SCell4DRX group b in SCell, in which case the DRX parameters for SCell2, SCell3, SCell4 adopt the parameters of DRX group b, and the DRX parameters for other serving cells such as PCell and SCell1 adopt the parameters of DRX group a. For example, when the terminal device measures CSI on one serving cell of SCell2, SCell3, and SCell4, that is, when a CSI reference signal is configured on one serving cell of SCell2, SCell3, and SCell4, the terminal device will perform CSI measurement using DRX parameters corresponding to DRX group b, that is, the first DRX group is DRX group b. For example, when the terminal device measures CSI on PCell or SCell1, i.e., when a CSI reference signal is configured on PCell or SCell1, the terminal device will use DRX parameters corresponding to DRX group a for CSI measurement, i.e., the first DRX group is DRX group a. The PCell and SCell1-SCell4 are serving cells configured by the terminal device.
In the above example, the physical resource for the terminal device to report the CSI may adopt a serving cell (serving cell) associated with the DRX group a, or may also adopt a secondary cell (SCell) associated with the DRX group b. The embodiment aims at the situation that the SCell associated with the second DRX group adopted by the terminal equipment for reporting the CSI is different from the first DRX group corresponding to the serving cell for measuring the CSI. That is, the present embodiment addresses the case of: the first DRX group is DRX group b and the second DRX group is DRX group a; or, the first DRX group is DRX group a and the second DRX group is DRX group b.
And the terminal equipment uses the DRX parameters corresponding to the first DRX group to measure the CSI at the time domain position of the first DRX group. Illustratively, the CSI reference signal is configured in a serving cell, and the serving cell employs DRX parameters corresponding to the first DRX group.
Optionally, the terminal device can receive a CSI reference signal for estimating a channel from the network device, calculate CSI, and report the CSI to the network device. The terminal device measuring the CSI may include: the terminal device receives the CSI reference signal, and the terminal device calculates CSI based on the received CSI reference signal.
It should be noted that the terminal device may perform CSI measurement during the active period of the first DRX group, or may perform CSI measurement during the inactive period of the first DRX group. The terminal device may determine whether CSI needs to be reported according to whether the time domain location for CSI measurement is located in the active period or the inactive period of the first DRX group.
Optionally, the active period of the terminal device in the DRX mode includes the following situations:
one, any one of 5 timers of a discontinuous reception duration timer DRX-onduty timer, a discontinuous reception inactivity timer DRX-inactivity timer, a discontinuous reception downlink retransmission timer DRX-retransmission timer rdl, a discontinuous reception uplink retransmission timer DRX-retransmission timer ul, and a random access-contention resolution timer RA-contentresolution timer is running.
Secondly, the terminal device sends a Scheduling Request (SR) on a Physical Uplink Control Channel (PUCCH), and the SR is currently in a pending state.
And thirdly, in the process of random access based on competition, the terminal equipment does not receive primary initial transmission indicated by a PDCCH scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI) after successfully receiving the random access response.
Optionally, regarding the starting of the DRX on duration timer, the terminal device may determine the time for starting the timer according to whether it is currently in a short DRX cycle (short DRX cycle) or a long DRX cycle (long DRX cycle).
The first condition is as follows: currently in the short DRX cycle.
The current subframe satisfies [ (SFN × 10) + subframe number ] module (DRX-ShortCycle) (DRX-StartOffset) module (DRX-ShortCycle), and the terminal device starts DRX-onDurationTimer at a time after the DRX-SlotOffset slots (slots) from the beginning of the current subframe.
The SFN is a System Frame Number (SFN), and the subframe Number is a subframe Number of the current subframe; DRX-ShortCycle is the short DRX cycle; DRX-StartOffset is the subframe offset at which the DRX cycle begins.
Case two: currently in the long DRX cycle.
The current subframe satisfies [ (SFN × 10) + subframe number ] module (DRX-LongCycle) ═ DRX-StartOffset, the terminal device starts DRX-onDurationTimer at a time after the DRX-SlotOffset slots (slots) from the beginning of the current subframe.
The SFN is a System Frame Number (SFN), and the subframe Number is a subframe Number of the current subframe; DRX- -Long Cycle is the Long DRX Cycle; DRX-StartOffset is the subframe offset at which the DRX cycle begins.
CSI refers to channel properties of a communication link in the field of wireless communication. The network device may transmit a data signal based on the CSI fed back from the terminal device. The CSI may include one or several pieces of information, such as a Rank Indicator (RI), a Precoding Matrix Indicator (PMI), Channel Quality Information (CQI), a CSI reference signal Resource Indicator (CRI), and the like, and the information included in the CSI is not limited in this application.
Illustratively, the CSI includes CQI. The CQI is provided to the network device to provide guidance information on which Modulation and Coding Scheme (MCS) is to be applied when the network device transmits data to facilitate link adaptation. In the case where there is communication of high radio quality between the network device and the terminal device, the terminal device may feed back a high CQI value, and the network device may transmit data by applying a relatively high modulation order and a low channel coding rate. In the opposite case, the terminal device may feed back a low CQI value, and the network device may transmit data by applying a relatively low modulation order and a high channel coding rate.
Illustratively, the CSI includes a PMI. The PMI is provided to the network device to provide guidance on which Multiple-Input Multiple-Output (MIMO) precoding scheme to apply when the network device has Multiple antennas installed.
And step 420, reporting the CSI on the time domain position of the second DRX group under the condition that the CSI is determined to be reported.
Wherein the second DRX group is another one of the at least two DRX groups. The terminal equipment is configured with at least two DRX groups, the carrier for measuring the CSI is positioned in a first DRX group, and the carrier prepared for reporting the CSI is positioned in a second DRX group.
Optionally, in a CA scenario, DRX group a is configured to all serving cells by default. The network device may configure SCell2, SCell3, SCell4DRX group b in SCell, in which case the DRX parameters for SCell2, SCell3, SCell4 adopt the parameters of DRX group b, and the DRX parameters for other serving cells such as PCell and SCell1 adopt the parameters of DRX group a. For example, when the terminal device reports CSI on one serving cell of SCell2, SCell3, and SCell4, the terminal device reports using DRX parameters corresponding to DRX group b, that is, the second DRX group is DRX group b. For example, when the terminal device reports CSI on PCell or SCell1, the terminal device reports using DRX parameters corresponding to DRX group a, that is, the second DRX group is DRX group a. The PCell and scells 1-4 are serving cells configured by the terminal device.
In the above example, the physical resource for reporting the CSI by the terminal device may adopt a serving cell (serving cell) associated with the DRX group a, or may also adopt a secondary cell (SCell) associated with the DRX group b. The embodiment aims at the situation that the SCell associated with the second DRX group adopted by the terminal equipment for reporting the CSI is different from the first DRX group corresponding to the serving cell for measuring the CSI. That is, the present embodiment addresses the case of: the first DRX group is DRX group b, the second DRX is DRX group a; or, the first DRX group is DRX group a and the second DRX group is DRX group b.
After the terminal device completes the CSI measurement and determines that the CSI report can be performed, the terminal device may report the measured CSI at the time domain position of the second DRX group. Optionally, the terminal device reports the CSI at a time domain location of an active period of the second DRX group.
In summary, according to the method provided in this embodiment, when the terminal device is configured with at least two DRX groups, the terminal device may determine whether to report the CSI according to whether the measured CSI reference signal is in the active period, so that the terminal device may report the CSI effectively according to the method, thereby avoiding a situation that the terminal device cannot determine whether to report the CSI because the measured CSI and the reported CSI are in different DRX groups, and ensuring accuracy of transmission.
Fig. 5 is a flowchart illustrating a method for reporting channel state information according to an exemplary embodiment of the present application, where the embodiment may be implemented alone or in combination with the embodiment of fig. 4. In this embodiment, the method includes the following steps:
step 510, determining to report the CSI when the CSI reference signal is in the active period of the first DRX group.
And the terminal equipment determines to report the CSI to the network equipment when the carrier of the CSI measured by the terminal equipment is positioned in the activation period of the first DRX group.
And step 520, reporting the CSI.
Wherein the second DRX group is another one of the at least two DRX groups. The terminal equipment is configured with at least two DRX groups, a carrier for measuring CSI is positioned in a first DRX group, and a carrier for preparing to report the CSI is positioned in a second DRX group.
After the terminal device completes the CSI measurement, it determines that the CSI report can be performed, and reports the measured CSI at the time domain position of the second DRX group, or at the time domain position of the first DRX group.
Optionally, there are two cases that the resource reporting CSI is located in the time domain location of the second DRX group:
firstly, a resource for reporting CSI is positioned on a time domain position of an active period of a second DRX group;
the terminal device reports the CSI at the time domain position of the active period of the second DRX group.
Secondly, the resource for reporting the CSI is positioned at the time domain position of the inactive period of the second DRX group;
and the terminal equipment can change the time domain position for reporting the CSI and report the CSI on the time domain position of the activation period of the first DRX group.
Illustratively, referring to fig. 6 in combination, the terminal device configures two DRX groups: DRX group #1 and DRX group # 2. Since different carriers correspond to different DRX groups, it is assumed that DRX group #1 has only one carrier, and DRX group #2 also has only one carrier.
For the CSI measurement and reporting, as shown in fig. 6, DRX group #1 is the first DRX group, and DRX group #2 is the second DRX group. And at the periodic/semi-persistent scheduling CSI reporting time, the first carrier for measuring the CSI is in the activation period of DRX group # 1. The second carrier location reporting CSI is in the inactive period of DRX group # 2. Since the CSI reference signal is in the active period of the first DRX group, the terminal device will report the CSI.
In summary, according to the method provided in this embodiment, when the terminal device is configured with at least two DRX groups, the terminal device may determine whether to report the CSI according to whether the measured CSI reference signal is in the active period, so that the terminal device may report the CSI effectively according to the method, thereby avoiding a situation that the terminal device cannot determine whether to report the CSI because the measured CSI and the reported CSI are in different DRX groups, and ensuring accuracy of transmission.
In the method provided by this embodiment, when the CSI reference signal is in the active period, the terminal device determines to report the CSI, so that the network device can schedule data of the first carrier in the active period, thereby improving the transmission effectiveness.
Fig. 7 is a flowchart illustrating a method for reporting channel state information according to an exemplary embodiment of the present application, where the embodiment may be implemented alone or in combination with the embodiments of fig. 4 or fig. 5. In this embodiment, the method includes the following steps:
Step 710, determining not to report the CSI when the CSI reference signal is not in the active period of the first DRX group.
And if the carrier of the CSI measured by the terminal equipment is not in the activation period of the first DRX group, the terminal equipment determines not to report the CSI to the network equipment.
Optionally, there are two cases when the resource reporting CSI is located at the time domain position of the second DRX group:
firstly, a resource for reporting CSI is positioned on a time domain position of an active period of a second DRX group;
secondly, the resource for reporting the CSI is positioned at the time domain position of the inactive period of the second DRX group;
for both cases, the terminal device does not report CSI to the network device.
Illustratively, referring collectively to fig. 8, the terminal device is configured with two DRX groups: DRX group #1 and DRX group # 2. Different carriers correspond to different DRX groups, and it is assumed that DRX group #1 has only one carrier, and DRX group #2 also has only one carrier.
For the CSI measurement and reporting, as shown in the figure, DRX group #1 is the second DRX group, and DRX group #2 is the first DRX group. And at the periodic/semi-persistent scheduling CSI reporting time, measuring that a first carrier of the CSI is in an inactive period of DRX group #2, and reporting that a second carrier of the CSI is in an active period of DRX group # 1. The terminal device will not report the CSI.
In summary, according to the method provided in this embodiment, when the terminal device is configured with at least two DRX groups, the terminal device may determine whether to report the CSI according to whether the measured CSI reference signal is in the active period, so that the terminal device may effectively report the CSI according to the method, thereby avoiding a situation that the terminal device cannot determine whether to report the CSI because the measured CSI and the reported CSI are in different DRX groups, and ensuring accuracy of transmission.
In the method provided by this embodiment, when the CSI reference signal is in the inactive period, the network device cannot schedule data for the first carrier that is not in the active period, and does not report the CSI, thereby avoiding redundant transmission overhead.
In an alternative embodiment based on the above embodiment, the CSI is aperiodic CSI (aperiodic CSI); or, CSI is periodic CSI (periodic CSI); alternatively, the CSI is Semi-persistent CSI (Semi-persistent CSI).
Illustratively, the CSI is aperiodic CSI, and the terminal device reports the CSI through a Physical Uplink Shared Channel (PUSCH) resource.
Illustratively, the CSI is a periodic CSI, and the terminal device reports the CSI through a Physical Uplink Control Channel (PUCCH) resource.
Illustratively, the CSI is a semi-persistent CSI, and the terminal device reports the CSI through a PUSCH resource or a PUCCH resource.
In an optional embodiment based on the above embodiment, the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter; the first DRX parameter includes: a first discontinuous reception duration timer DRX-onDuration timer, a first discontinuous reception inactivity timer DRX-InactivtyTimer; the second DRX parameter includes: a second DRX-onDurationTimer, a second DRX-InactivetyTimer;
wherein the first DRX-onDuration timer is different from the second DRX-onDuration timer, and the first DRX-InactivatyTimer is different from the second DRX-InactivatyTimer.
Optionally, each DRX group has a set of DRX parameters in a one-to-one correspondence, where the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter.
The DRX parameter is configured semi-statically according to high-layer signaling and is a parameter of each MAC entity. The network device may control the DRX cycle of the terminal by configuring the DRX parameters. Wherein, the DRX parameters may include:
1) a duration timer for discontinuous reception, i.e., DRX-onDurationTimer. And the terminal starts a DRX-onDurationTimer in a fixed DRX period, and the terminal equipment monitors the PDCCH within the time length of the timer.
2) A discontinuous reception non-active timer, namely DRX-InactivityTimer. The timer is started or restarted when the terminal successfully decodes one PDCCH and the PDCCH is scheduled for initial transmission, and the terminal equipment monitors the PDCCH within the time length of the timer.
3) The terminal equipment independently maintains the timer aiming at each downlink HARQ, determines that the demodulation of the corresponding HARQ process data fails, starts the timer after the DRX-HARQ-RTT-TimerDL is overtime, and monitors the PDCCH by the terminal within the running time of the timer. The behavior of DRX-HARQ-RTT-TimerDL is described as follows.
4) The terminal equipment independently maintains the timer aiming at each uplink HARQ process, the timer is started after the DRX-HARQ-RTT-TimerUL is overtime, and the terminal equipment monitors the PDCCH within the running time of the timer.
5) A long cycle of discontinuous reception, i.e., DRX-LongCycle, and the timer parameter is used to indicate a long cycle of discontinuous reception.
6) A short cycle of discontinuous reception, i.e., DRX-short cycle, the timer parameter is used to indicate a short discontinuous reception cycle.
7) The method comprises the steps that a discontinuous reception downlink HARQ round trip delay timer, namely DRX-HARQ-RTT-TimerDL is adopted, the timer parameter is maintained separately for each downlink HARQ process, the timer is started at the first symbol after the resource fed back by the HARQ is transmitted, and the terminal equipment does not need to monitor a PDCCH during the running time of the timer.
8) The method comprises the steps that a discontinuous reception uplink HARQ round trip delay timer, namely DRX-HARQ-RTT-TimerUL, is independently maintained for each uplink HARQ process, the timer is started at the first symbol after data transmission resources of terminal equipment, and the terminal equipment does not need to monitor a PDCCH within the running time of the timer.
Optionally, for the first DRX group and the second DRX group, the network device configures a DRX-inactivity timer and a DRX-onduration timer for 2 DRX groups, respectively, and the remaining DRX parameters are common configuration parameters of the 2 DRX groups.
Fig. 9 is a block diagram of an apparatus for reporting channel state information according to an exemplary embodiment of the present application; the device is applied to terminal equipment which is configured with at least two DRX groups, and comprises: a determining module 901 and a reporting module 902;
a determining module 901, configured to determine whether to report CSI according to whether the measured CSI reference signal is located in an active period of the first DRX group;
A reporting module 902, configured to report the CSI at a time domain location of the second DRX group when it is determined to report the CSI;
wherein the first DRX group is one of the at least two DRX groups, and the second DRX group is another one of the at least two DRX groups.
In an optional example, the determining module 901 is configured to determine to report CSI if the CSI reference signal is located in an active period of the first DRX group.
In an optional example, the reporting module 902 is configured to report the CSI at a time domain location of an active period of the second DRX group.
In an optional example, the reporting module 902 is configured to report the CSI at a time domain position of an active period of the first DRX group, in a case that a resource for reporting the CSI is located in an inactive period of the second DRX group.
In an optional example, the determining module 901 is configured to determine not to report the CSI in case that the CSI reference signal is not located in the active period of the first DRX group.
In an optional example, the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter; the first DRX parameter includes: a first discontinuous reception duration timer DRX-onDuration timer, a first discontinuous reception inactivity timer DRX-InactivtyTimer; the second DRX parameter includes: a second DRX-onDurationTimer, a second DRX-InactivetyTimer; wherein the first DRX-onDuration timer is different from the second DRX-onDuration timer, and the first DRX-InactivatyTimer is different from the second DRX-InactivatyTimer.
In one optional example, the CSI is aperiodic CSI; or, the CSI is periodic CSI;
alternatively, the CSI is semi-persistent CSI.
Fig. 10 shows a schematic structural diagram of a terminal device according to an exemplary embodiment of the present application, where the terminal device includes: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.
The processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
The receiver 102 and the transmitter 103 may be implemented as one communication component, which may be a piece of communication chip.
The memory 104 is connected to the processor 101 by a bus 105.
The memory 104 may be configured to store at least one instruction for execution by the processor 101 to implement the various steps in the above-described method embodiments.
Optionally, the processor 101 is configured to determine whether to report CSI according to whether the measured CSI reference signal is located in an active period of the first DRX group.
Optionally, the transmitter 103 is configured to report the CSI at a time domain position of the second DRX group when it is determined to report the CSI; wherein the first DRX group is one of the at least two DRX groups and the second DRX group is another one of the at least two DRX groups.
Optionally, the processor 101 is configured to determine to report the CSI if the CSI reference signal is located in an active period of the first DRX group.
Optionally, the transmitter 103 is configured to report CSI at a time domain location of an active period of the second DRX group.
Optionally, the transmitter 103 is configured to report the CSI at a time domain position of an active period of the first DRX group, if the resource for reporting the CSI is located in an inactive period of the second DRX group.
Optionally, the processor 101 is configured to determine not to report the CSI in case that the CSI reference signal is not located in the active period of the first DRX group.
Further, the memory 104 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, Electrically Erasable Programmable Read Only Memories (EEPROMs), Erasable Programmable Read Only Memories (EPROMs), Static Random Access Memories (SRAMs), Read-Only memories (ROMs), magnetic memories, flash memories, Programmable Read Only Memories (PROMs).
In an exemplary embodiment, a computer-readable storage medium is further provided, where at least one instruction, at least one program, a code set, or a set of instructions is stored in the computer-readable storage medium, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by a processor to implement the method for reporting channel state information performed by a terminal device according to the foregoing method embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (16)

  1. A method for reporting channel state information is applied to a terminal device, wherein the terminal device is configured with at least two DRX groups, and the method comprises:
    Determining whether to report CSI or not according to whether the measured CSI reference signal is located in the activation period of the first DRX group or not;
    reporting the CSI on a time domain position of a second DRX group under the condition that the CSI is determined to be reported;
    wherein the first DRX group is one of the at least two DRX groups, and the second DRX group is another one of the at least two DRX groups.
  2. The method of claim 1,
    determining whether to report the CSI according to whether the measured CSI reference signal is located in the active period of the first DRX group includes:
    and determining to report the CSI when the CSI reference signal is in the active period of the first DRX group.
  3. The method of claim 2,
    reporting the CSI at the time domain location of the second DRX group, including:
    and reporting the CSI on the time domain position of the activation period of the second DRX group.
  4. The method of claim 2, further comprising:
    and reporting the CSI on the time domain position of the active period of the first DRX group under the condition that the resource reporting the CSI is positioned in the inactive period of the second DRX group.
  5. The method of claim 1,
    determining whether to report the CSI according to whether the measured CSI reference signal is located in the active period of the first DRX group includes:
    determining not to report the CSI on a condition that the CSI reference signal is not located within an active period of the first DRX group.
  6. The method according to any of claims 1 to 5, wherein the parameters of the first DRX group are first DRX parameters, and the parameters of the second DRX group are second DRX parameters;
    the first DRX parameter includes: a first discontinuous reception duration timer DRX-onDuration timer, a first discontinuous reception inactivity timer DRX-InactivtyTimer;
    the second DRX parameter includes: a second DRX-onDurationTimer, a second DRX-InactivetyTimer;
    wherein the first DRX-onDuration timer is different from the second DRX-onDuration timer, and the first DRX-InactivationTimer is different from the second DRX-InactivationTimer.
  7. The method according to any one of claims 1 to 5,
    the CSI is aperiodic CSI;
    or, the CSI is periodic CSI;
    or, the CSI is semi-persistent CSI.
  8. A device for reporting channel state information is applied to a terminal device, wherein the terminal device is configured with at least two DRX groups, and the device comprises: a determining module and a reporting module;
    The determining module is configured to determine whether to report the CSI according to whether the measured CSI reference signal is located in an active period of the first DRX group;
    the reporting module is configured to report the CSI at a time domain position of a second DRX group, if it is determined to report the CSI;
    wherein the first DRX group is one of the at least two DRX groups, and the second DRX group is another one of the at least two DRX groups.
  9. The apparatus of claim 8,
    the determining module is configured to determine to report the CSI if the CSI reference signal is within an active time active period of the first DRX group.
  10. The apparatus of claim 9,
    the reporting module is configured to report the CSI at a time domain location of an active period of the second DRX group.
  11. The apparatus of claim 9, further comprising:
    the reporting module is configured to report the CSI at a time domain location of an active period of the first DRX group, when a resource reporting the CSI is located in an inactive period of the second DRX group.
  12. The apparatus of claim 8,
    the determining module is configured to determine not to report the CSI if the CSI reference signal is not located within an active period of the first DRX group.
  13. The apparatus according to any of the claims 8 to 12, wherein the parameter of the first DRX group is a first DRX parameter, and the parameter of the second DRX group is a second DRX parameter;
    the first DRX parameter includes: a first discontinuous reception duration timer DRX-nDurationtimer, a first discontinuous reception inactivity timer DRX-Inactivitytimer;
    the second DRX parameter includes: a second DRX-onDurationTimer, a second DRX-nactivyTimer;
    wherein the first DRX-onDuration timer is different from the second DRX-nDuration timer, and the first DRX-InactivetyTimer is different from the second DRX-activetyTimer.
  14. The apparatus according to any one of claims 8 to 12,
    the CSI is aperiodic CSI;
    or, the CSI is periodic CSI;
    or, the CSI is semi-persistent CSI.
  15. A terminal, characterized in that the terminal comprises:
    a processor;
    a transceiver coupled to the processor;
    A memory for storing processor-executable instructions;
    the processor is configured to implement the reporting method of channel state information according to any one of claims 1 to 7.
  16. A computer-readable storage medium, wherein at least one instruction, at least one program, a set of codes, or a set of instructions is stored in the storage medium, and the at least one instruction, the at least one program, the set of codes, or the set of instructions is loaded and executed by a processor to implement the method for reporting channel state information according to any one of claims 1 to 7.
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