CN118044297A

CN118044297A - Availability indication effective time method, user equipment and base station

Info

Publication number: CN118044297A
Application number: CN202180102821.4A
Authority: CN
Inventors: 沙希德·简; 生嘉
Original assignee: Huizhou TCL Cloud Internet Corp Technology Co Ltd
Current assignee: Huizhou TCL Cloud Internet Corp Technology Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2024-05-14
Also published as: WO2023044908A1

Abstract

An availability indication effective time method, a user equipment UE and a base station BS. The method comprises receiving an availability indication of a tracking reference signal TRS/channel state information reference signal CSI-RS from the network by signalling while in an idle/inactive state; and a validity time indicated by the availability of the network configured TRS/CSI-RS. The validity time of the availability indication of the TRS/CSI-RS is based on a signaling type for the availability indication of the TRS/CSI-RS. The present Shen allows the BS/network to configure the accurate active time of TRS/CSI-RS availability indication to idle/inactive UEs, thereby saving power consumption.

Description

Availability indication effective time method, user equipment and base station

Technical Field

The present invention relates to wireless communication, and more particularly, to a time-of-availability method, a User Equipment (UE) and a Base Station (BS).

Background

Wireless communication systems of third generation (3G) mobile telephone standards and technologies are well known. Such 3G standards and technologies were developed by the third generation partnership project (3 GPP). Third generation wireless communications have been developed to support macro cellular mobile phone communications, such that communication systems and networks are evolving towards broadband and mobile systems. In a cellular wireless communication system, a User Equipment (UE) is connected to a Radio Access Network (RAN) through a radio link. The RAN includes a set of Base Stations (BSs) that provide radio links with UEs in a coverage cell of the base stations, and that provide interfaces with a Core Network (CN) to provide overall network control, the RAN and the CN each performing functions related to the overall network.

The third generation partnership project has developed a Long Term Evolution (LTE) system, i.e. an evolved universal mobile telecommunications system radio access network (E-UTRAN), for mobile access networks in which one or more macro base stations are supported by base stations called enodebs or enbs (evolved nodebs). LTE is further evolving towards so-called 5G or NR (new radio) systems, where one or more cells are supported by a base station called next generation node B's base station (gNB).

The 5G standard will support a number of different services, each with different requirements. These services include enhanced mobile broadband (Enhanced Mobile Broadband, eMBB) for high data rate transmissions, ultra-reliable low-latency communications (Ultra-Reliable Low Latency Communication, URLLC) for devices requiring low latency and high link reliability, and large-scale machine-type communications (MASSIVE MACHINE-Type Communication, mMTC) that support a large number of low-power devices to achieve long-life, energy-efficient communications.

Energy efficiency is one of the keys of 5G NR, supporting a variety of conditions including eMBB, emtc, and URLLC. To conserve power and extend battery life, the UE may use discontinuous reception (Discontinuous Reception, DRx) in radio resource control (Radio Resource Control, RRC) idle/inactive mode, turn off Radio Frequency (RF) functions and periodically wake up to monitor the physical downlink control channel (Physical Downlink Control Channel, PDCCH) to check for the presence of paging messages. Prior to page monitoring, the UE may perform various activities such as automatic gain control (Automatic Gain Control, AGC) and time/frequency (T/F) channel tracking. As shown in fig. 1, LTE supports an always-on cell-specific reference signal (CELL SPECIFIC REFERENCE SIGNAL, CRS) in each subframe. On the other hand, as shown in fig. 2, the synchronization signal block (Synchronization Signal Block, SSB) supported by NR typically requires multiple SSB bursts (bursts) that are transmitted with longer periods (e.g., 20 ms) compared to LTE CRS, thus resulting in the UE consuming more power than LTE.

In NR, a UE in idle/inactive mode needs to wake up earlier, longer and more frequently than an LTE UE for subsequent activities (e.g., AGC and T/F tracking). Therefore, the power consumption of the NR UE in idle/inactive mode is much higher than that of the LTE UE in idle mode. Accordingly, the 3GPP RAN has agreed to assign potential tracking reference signal (TRACKING REFERENCE SIGNAL, TRS)/channel state information reference signal (CSI-RS) occasions to idle/inactive mode UEs in place of SSB-based synchronization used before Paging Occasions (POs) and to enhance the power saving effect, as shown in fig. 3.

The TRS/CSI-RS occasions available in connected mode, the UE may be configured in idle/inactive mode, so the TRS/CSI-RS availability in the network depends on the UE connected in the network. But the idle/inactive UE may perform blind detection to monitor TRS/CSI-RS occasions, which may consume more power. To avoid such blind detection, idle/inactive UEs TRS/CSI-RS may be informed in advance that they are available at configured occasions.

Further, to avoid the always-on TRS/CSI-RS case, the idle/inactive UE assumes that the TRS/CSI-RS availability indication is valid for the validity period and is not available at the expiration of the validity period. The validity time of the availability indication of the TRS/CSI-RS is necessary, otherwise the idle/inactive UE will assume that TRS/CSI-RS occasions are available until an unavailability indication signal is received. To this end, the TRS/CSI-RS based on layer 1 (L1) is valid for a period of validity period at the configuration occasion for the availability indication of idle/inactive UEs.

When the idle/inactive UE receives the TRS/CSI-RS availability indication, the UE assumes that the indicated TRS/CSI-RS occasion is available for the validity period and is not available when the validity period expires. The goal of the validity period is to avoid transmitting additional signaling that may be used to indicate that TRS/CSI-RS occasions are not available when the TRS/CSI-RS is not available in the network. However, the validity period is significantly affected by the type of signaling (L1-based signaling (e.g., P-DCI and PEI) and SIB-based signaling) used for the TRS/CSI-RS availability indication. The common validity time for all TRS/CSI-RS availability indication signaling may result in inaccurate validity times for the network to configure idle/inactive UEs. In addition, unstable on/off states of the TRS/CSI-RS in the network may also affect the effective time design.

Disclosure of Invention

The invention aims to provide an effective time method for availability indication, user equipment and a base station, which are used for solving the problems in the prior art.

In a first aspect, an embodiment of the present invention provides a method for active time of an availability indication, performed by a user equipment UE in a network, the method comprising: receiving an availability indication of a tracking reference signal TRS/channel state information reference signal CSI-RS from the network by signalling while in an idle/inactive state; and a validity time indicated by the availability of the network configured TRS/CSI-RS. The validity time of the availability indication of a TRS/CSI-RS is based on a signaling type for the availability indication of a TRS/CSI-RS, the validity time of the availability indication of a TRS/CSI-RS being represented by a validity time and a reference point, wherein the validity time is the validity time of the availability indication of a TRS/CSI-RS, the reference point being a time position at which the availability indication of a TRS/CSI-RS becomes valid.

In a second aspect, embodiments of the present invention provide a method of active time of availability indication, performed by a base station BS in a network, the method comprising: transmitting an availability indication of a tracking reference signal TRS/channel state information reference signal CSI-RS in an idle/inactive state of the UE to the user equipment UE through signaling; the UE is configured with a validity time of the availability indication of TRS/CSI-RS. The validity time of the availability indication of a TRS/CSI-RS is based on a signaling type for the availability indication of a TRS/CSI-RS, the validity time of the availability indication of a TRS/CSI-RS being represented by a validity time and a reference point, wherein the validity time is a time when the availability indication of a TRS/CSI-RS is valid, and the reference point is a time position when the availability indication of a TRS/CSI-RS becomes valid.

In a third aspect, an embodiment of the present invention provides a user equipment, UE, in communication with a base station, BS, in a network, the UE comprising a processor for invoking and executing program instructions stored in memory to perform: receiving an availability indication of a tracking reference signal TRS/channel state information reference signal CSI-RS from the network by signalling while in an idle/inactive state; a validity time indicated by the availability of the network configured TRS/CSI-RS. The validity time of the availability indication of a TRS/CSI-RS is based on a signaling type for the availability indication of a TRS/CSI-RS, the validity time of the availability indication of a TRS/CSI-RS being represented by a validity time and a reference point, wherein the validity time is the validity time of the availability indication of a TRS/CSI-RS, the reference point being a time position at which the availability indication of a TRS/CSI-RS becomes valid.

In a fourth aspect, an embodiment of the present invention provides a base station BS in communication with user equipment UE in a network, the base station comprising a processor for invoking and executing program instructions stored in memory to perform: transmitting an availability indication of a tracking reference signal TRS/channel state information reference signal CSI-RS in an idle/inactive state of the UE to the user equipment UE through signaling; the UE is configured with a validity time of the availability indication of TRS/CSI-RS. The validity time of the availability indication of a TRS/CSI-RS is based on a signaling type for the availability indication of a TRS/CSI-RS, the validity time of the availability indication of a TRS/CSI-RS being represented by a validity time and a reference point, wherein the validity time is a time when the availability indication of a TRS/CSI-RS is valid, and the reference point is a time position when the availability indication of a TRS/CSI-RS becomes valid.

In a fifth aspect, embodiments of the present invention provide a computer-readable storage medium storing a computer program that enables a computer to perform the method of the first aspect.

In a sixth aspect, embodiments of the present invention provide a computer-readable storage medium storing a computer program that enables a computer to perform the method of the second aspect.

In a seventh aspect, embodiments of the present invention provide a computer program product comprising computer program instructions enabling a computer to perform the method of the first aspect.

In an eighth aspect, an embodiment of the invention provides a computer program product comprising computer program instructions for enabling a computer to perform the method of the second aspect.

In a ninth aspect, embodiments of the present invention provide a computer program which, when run on a computer, enables the computer to perform the method of the first aspect.

In a tenth aspect, embodiments of the present invention provide a computer program which, when run on a computer, enables the computer to perform the method of the second aspect.

In the prior art, a general validity time is configured for the availability indication of all TRS/CSI-RS, irrespective of the availability indication signaling of TRS/CSI-RS and/or the on/off state of TRS/CSI-RS in the network, which may lead to the network configuring the validity time of the availability indication of TRS/CSI-RS as an inaccurate validity time for idle/inactive UEs. Compared with the prior art, the invention proposes that the validity time of the availability indication of the TRS/CSI-RS is designed and configured according to the signaling used for the availability indication of the TRS/CSI-RS, and on the other hand, according to the on/off state of the TRS/CSI-RS in the network. This allows the BS/network to configure the TRS/CSI-RS availability indication to the idle/inactive UE for accurate active time, thereby saving power consumption.

Drawings

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

Fig. 1 is a schematic diagram of LTE idle UE synchronization from a serving cell in the prior art.

Fig. 2 is a schematic diagram showing NR idle/inactive mode UE synchronization from a prior art service unit using SSB.

Fig. 3 is a diagram illustrating NR idle/inactive mode UE synchronization from a service unit in the related art using TRS/CSI-RS.

Fig. 4 is a step diagram of one or more UEs and base stations in a communication network system according to an embodiment of the present invention.

Fig. 5 illustrates an effective time method of availability indication performed by a UE in accordance with an embodiment of the present invention.

Fig. 6 illustrates an effective time method of availability indication performed by a base station according to an embodiment of the present invention.

Fig. 7 is a diagram illustrating the validity time of the P-DCI based indication of a paging cycle according to an embodiment of the present invention.

Fig. 8 is a schematic diagram illustrating the effective time of the N paging cycle indication based on the P-DCI according to an embodiment of the present invention.

Fig. 9 is a diagram illustrating the validity time of PEI-based indication of a paging cycle in accordance with an embodiment of the present invention.

Fig. 10 is a schematic diagram of the effective time of N paging cycle indications based on PEI according to an embodiment of the present invention.

Fig. 11 is a diagram showing the effective time of the indication of the unstable on/off TRS status based on the P-DCI according to the embodiment of the present invention.

FIG. 12 is a schematic diagram of the active time of PEI-based indication of unstable on/off TRS status according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention describe in detail technical matters, structural features, achieving objects and effects with reference to the accompanying drawings as follows. In particular, the terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

The following table contains some abbreviations that may be used in the description of the examples of the invention:

Abbreviations (abbreviations)	Full name
		UE	User equipment
BS	Base station
		TRS	Tracking reference signals
CSI-RS	Channel state information reference signal
		SIB	System information block
L1	Layer 1
		PO	Paging occasion
PEI	Early paging indication
		DCI	Downlink control information
P-DCI	Paging downlink control information
		DRx	Discontinuous reception
RRC	Radio resource control
		AGC	Automatic gain control
T/F	Time/frequency
		CRS	Cell specific reference signals
SSB	Synchronous signal module

In this document, the term "/" should be interpreted as meaning "and/or".

This application is related to wireless communication systems (e.g., 5G NR systems) focusing on enhancing the power saving effect of User Equipment (UE) in idle/inactive mode. More particularly, the present invention relates to designing the validity time of a Tracking Reference Signal (TRS)/channel state information reference signal (CSI-RS) availability indication according to its signaling.

The main object of the present invention is to design and configure the validity time of the availability indication of a TRS/CSI-RS based on the availability indication signaling of the TRS/CSI-RS or based on the on/off state of the TRS/CSI-RS in the network. The solution to achieve this objective is summarized below. Effective time designs and configurations are presented based on layer 1 (L1) based signaling such as paging downlink control information (paging Downlink Control Information, P-DCI) and paging early Indication (PAGING EARLY Indication, PEI) and the availability Indication signaling of TRS/CSI-RS based signaling of System Information Blocks (SIBs). Factors that affect the effective time design, such as the steady and unsteady on/off states of TRS/CSI-RS opportunities in the network, need to be considered here. According to the L1 based indication, it is proposed that the availability indication of TRS/CSI-RS is valid for 1 paging cycle or N paging cycles. According to the signaling type and ON/OFF state of TRS/CSI-RS in the network, a high-level configuration of the availability indication valid time of the TRS/CSI-RS is proposed.

The beneficial effects of the invention include: when the TRS/CSI-RS is not available in the network, additional unavailable signaling can be avoided. According to the TRS/CSI-RS availability indication signal, accurate effective time can be configured for idle/inactive UE, and power consumption of the UE can be reduced. The design of the network on/off state of the TRS/CSI-RS in the validity period is considered, so that the additional signaling overhead of the network is reduced.

As shown in fig. 4, in some embodiments, one or more User Equipments (UEs) 10 and a base station (e.g., a gNB or eNB) 20 for wireless communication are provided in a communication network system 30. The communication network system 30 includes one or more UEs 10 and a base station 20. Each UE10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and the transceiver 13. The base station 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and the transceiver 23. The processor 11 or 21 may be configured to implement the proposed functions, processes and/or methods described in the present specification. The radio interface protocol layer may be implemented in the processor 11 or 21. The memory 12 or 22 is operatively coupled to the processor 11 or 21 and stores various information to operate the processor 11 or 21. The transceiver 13 or 23 is operatively coupled to the processor 11 or 21, the transceiver 13 or 23 transmitting and/or receiving radio signals.

The processor 11 or 21 may include an Application Specific Integrated Circuit (ASIC), other chipset, logic circuit, and/or data processing device. Memory 12 or 22 may include Read Only Memory (ROM), random Access Memory (RAM), flash memory, memory cards, storage media, and/or other storage devices. The transceiver 13 or 23 may include baseband circuitry to process radio frequency signals. When the embodiments are implemented in software, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. These modules may be stored in the memory 12 or 22 and executed by the processor 11 or 21. The memory 12 or 22 may be implemented within the processor 11 or 21 or external to the processor 11 or 21, in which case they can be communicatively coupled to the processor 11 or 21 via various means as is known in the art.

Fig. 5 illustrates a valid time method for availability indication 500 performed by a UE in accordance with an embodiment of the present invention. Fig. 6 illustrates an effective time method of availability indication performed by a base station 600 in accordance with an embodiment of the present invention. In some embodiments, in conjunction with fig. 5 and 6 and fig. 4, in step 502 of method 500, the UE receives an indication of availability of TRS/CSI-RS occasions in an idle/inactive state from the BS/network by signaling; in step 602 of method 600, the BS signals to the UE an indication of the availability of TRS/CSI-RS in the UE idle/inactive state. In step 504 of method 500, the UE is configured by the BS/network with a validity time of the availability indication of the TRS/CSI-RS based on a signaling type for the availability indication of the TRS/CSI-RS; in step 604 of method 600, the base station configures a validity time of the UE with a validity time of the availability indication of the TRS/CSI-RS according to a signaling type for the availability indication of the TRS/CSI-RS. This may solve the problems in the prior art, reduce signaling overhead, avoid additional unavailable signaling when TRS/CSI-RS is unavailable in the network, provide accurate validity time for TRS/CSI-RS availability indication, and/or provide good communication performance.

The validity time of the TRS/CSI-RS availability indication is based on the type of signaling used for the TRS/CSI-RS availability indication (i.e., the TRS/CSI-RS availability indication signal) including, but not limited to, L1 based signaling (e.g., P-DCI and PEI) and SIB based signaling.

The validity period of the TRS/CSI-RS availability consists of a validity time and a reference point. The validity time is the time when the TRS/CSI-RS availability indication is valid. The reference point is the time location where the TRS/CSI-RS availability indication is validated, more specifically the time location where the idle/inactive UE receives the availability indication and validates.

In an embodiment of the present invention, the validity time of the availability indication of the TRS/CSI-RS depends on whether the on/off state of the TRS/CSI-RS in the network is stable. If the TRS/CSI-RS remains ON/OFF (i.e., ON/OFF state) for a certain time before and after the network transmits the TRS/CSI-RS availability indication, the ON/OFF state of the TRS/CSI-RS in the network is stable; if the duration of the TRS/CSI-RS switching between ON and OFF is compared to a particular duration when the network transmits the TRS/CSI-RS availability indication, the ON/OFF state of the TRS/CSI-RS in the network is unstable. Specifically, when the ON/off state of the TRS/CSI-RS in the network is stable, the TRS/CSI-RS maintains the ON/CSI-RS for a stable duration. When the ON/OFF state of the TRS/CSI-RS in the network is unstable, the TRS/CSI-RS is immediately switched from ON to OFF.

In an embodiment of the invention, the validity time of said availability indication of the TRS/CSI-RS depends on the number of paging cycles for which the signaling carries said availability indication of the TRS/CSI-RS. If the on/off state of the TRS/CSI-RS in the network is stable, in case of the TRS/CSI-RS availability indication signaling based on P-DCI (i.e., an L1 signaling), the P-DCI may carry the TRS/CSI-RS availability indication of one paging cycle or N paging cycles (where N is an integer greater than 1). If the on/off state of the TRS/CSI-RS in the network is stable, the PEI may carry the TRS/CSI-RS availability indication one paging cycle or N paging cycles (where N is an integer greater than 1) in case of PEI based TRS/CSI-RS availability indication signaling (i.e. one L1 signaling). If the on/off state of the TRS/CSI-RS in the network is unstable, the P-DCI may carry the availability indication of the TRS/CSI-RS in one paging cycle but cannot be carried in N paging cycles in case of the availability indication signaling of the TRS/CSI-RS based on the P-DCI. If the on/off state of the TRS/CSI-RS in the network is unstable, the PEI may carry the TRS/CSI-RS availability indication in one paging cycle, but not in N paging cycles, in case of PEI-based TRS/CSI-RS availability indication signaling. On the other hand, in the case of SIB based TRS/CSI-RS availability indication signaling, the validity time of the availability indication of TRS/CSI-RS may or may not span multiple paging cycles.

In the embodiment of the present invention, if the on/off state of the TRS/CSI-RS in the network is stable, the availability indication signaling of the TRS/CSI-RS based on the P-DCI may be applicable as follows. When the P-DCI carries a TRS/CSI-RS availability indication within one paging cycle, the validity time is the next Paging Occasion (PO) starting from the first PO of the P-DCI, and the reference point is the time position where the first PO is completed. For example, the active time is the duration of the paging cycle minus the duration of the PO. When the P-DCI carries the TRS/CSI-RS availability indication of N paging cycles, the effective time is the (n+1) th paging cycle from the first PO, and the reference point is the time position when the first PO of the P-DCI is completed. For example, the active time is the duration of one paging cycle times N, then the duration of PO is subtracted.

In the embodiment of the present invention, if the on/off state of the TRS/CSI-RS in the network is stable and the availability indication signaling of the PEI-based TRS/CSI-RS is used, the following case may be applicable. When the PEI carries a TRS/CSI-RS availability indication during a paging cycle, the validity time is from the first PO of the paging cycle in which the PEI is located until the next PO, and the reference point is calculated from an applied delay, wherein the applied delay is the time domain duration from the first PO to receipt of the PEI. For example, the active time is the duration of the paging cycle minus the application delay. When the PEI carries a TRS/CSI-RS availability indication for N paging cycles, the effective time is the (n+1) th paging cycle from the first PO, the reference point is calculated from the applied delay, which is the time domain duration from the first PO of the paging cycle in which the PEI is located, until the PEI is received. For example, the active time is the duration of one paging cycle times N, then subtracting the application delay.

In an embodiment of the invention, the validity time of said availability indication of TRS/CSI-RS is configured by a higher layer in the same System Information Block (SIB) to configure X this layer for configuring TRS/CSI-RS resources for UEs in idle/inactive state, where X is an integer selected from 2 to 13.

In the embodiment of the present invention, if the on/off state of the TRS/CSI-RS in the network is unstable, the availability indication signaling of the TRS/CSI-RS based on the P-DCI is used, and the following case may be applicable. The effective time is until the TRS/CSI-RS switches from on to off in the network, and the reference point is the time position where the PO carrying the P-DCI ends.

In the embodiment of the present invention, if the on/off state of the TRS/CSI-RS in the network is unstable, the availability indication signaling of the PEI-based TRS/CSI-RS is used, and the following case may be applicable. The active time is until the TRS/CSI-RS switches from on to off in the network, and the reference point is calculated from the application delay, which is the time domain duration from the PO of the paging cycle in which the PEI is located, until the PEI is received.

In an embodiment of the invention, if the availability indication signaling of SIB based TRS/CSI-RS is used, the validity time of the availability indication of SIB based TRS/CSI-RS is based on an explicit availability indication or an implicit availability indication. For explicit availability indication, the validity time is the next PO starting from the first PO of the paging cycle to which SIB based signaling is applied, and the reference point is starting from the duration of the explicit availability indication when decoded. For the implicit availability indication, the validity time is until the TRS/CSI-RS configuration is currently present, irrespective of the PO duration, and the reference point is the time position at which the TRS/CSI-RS configuration is applied.

When the idle/inactive UE receives the TRS/CSI-RS availability indication, the UE assumes that the indicated TRS/CSI-RS occasion is available for the validity period and is not available when the validity period expires. The validity period facilitates configuration flexibility that allows the network to reduce the transmission of additional signaling (e.g., unavailable signaling) when TRS/CSI-RS of the configuration occasion is not available in the network. In the present invention, the validity time of the availability indication of the TRS/CSI-RS is designed according to a signaling method for the availability indication of the TRS/CSI-RS, and on the other hand, according to an on/off switching stability status of the TRS/CSI-RS in the network. Embodiments of the present invention will be described in more detail below in three different ways, namely: (1) When the state of the TRS/CSI-RS in the network stabilizes, a validity time of the availability indication of the TRS/CSI-RS based ON L1 (i.e., a stabilization duration for which the TRS/CSI-RS remains ON or OFF before and after the network transmission indication); (2) When the TRS/CSI-RS status in the network is unstable (i.e. the network is transmitting an availability indication, the TRS/CSI-RS immediately switches from ON to OFF), based ON the validity time of said availability indication of the TRS/CSI-RS of L1; (3) When SIB based signaling is used for the availability indication of TRS/CSI-RS, a validity time of the availability indication of TRS/CSI-RS.

(1) Validity of L1 signaling indication when on/off state of TRS/CSI-RS is stable

The present embodiment of the present invention explains the effective time when the availability indication of the P-DCI based TRS/CSI-RS and the on/off state of the PEI based TRS/CSI-RS are stable in the network before and after the network transmits the availability indication.

Examples of indicating valid times based on P-DCI are provided below.

The validity time of the P-DCI based TRS/CSI-RS availability indication depends on the number of paging cycles with the TRS/CSI-RS availability indication for the P-DCI based signaling. For example, when the P-DCI carries the availability indication of the TRS/CSI-RS in only one paging cycle (i.e., the next paging cycle), the effective time may be calculated according to one paging cycle duration, as shown in fig. 7. The validity period (i.e., validity time) is the time position to the completion of the paging monitor opportunity by the next PO, i.e., PO2, reference point. Since the UE knows the PO Duration (PO in the following formula) and the paging cycle Duration (PAGING CYCLE Duration in the following formula), the effective time (Duration in the following formula) can be calculated by the following formula.

Duration＝Paging cycle duration–PO

Higher layer configuration:

The P-DCI based validity time of the TRS/CSI-RS availability indication for one paging cycle may be configured by an upper layer of the same sib_x (e.g., X is an integer selected from 2 to 13) for configuring TRS/CSI-RS resources for idle/inactive UEs. The contents of the higher layer IEs of this configuration are as follows:

Similarly, when the availability indication of the P-DCI based TRS/CSI-RS for N paging cycles is used, the effective time duration may be calculated according to the N paging cycle durations, as shown in fig. 8. In this case, the duration of the validity period (i.e., the validity time) is until the beginning of the n+1th paging cycle, where N is an integer greater than 1 (e.g., N is an integer n= {2,3,4 }), and the reference point is the time position at which the paging monitor occasion ends. Since the UE knows the paging cycle Duration (Paging cycleduration in the following equation) and the PO Duration (PO in the following equation), the effective time (Duration in the following equation) can be calculated according to the following equation.

Duration＝N×Paging Cycle duration–PO

Higher layer configuration:

The validity time of the availability indication of the P-DCI based TRS/CSI-RS may be configured by an upper layer of the same sib_x (e.g., X is an integer selected from 2 to 13) for configuring TRS/CSI-RS resources of idle/inactive UEs. The contents of the higher layer IEs of this configuration are as follows:

Examples of PEI-based indication of validity time are provided below

The effective time design of the PEI-based TRS/CSI-RS availability indication depends on the number of paging cycles the PEI-based indication carries with the TRS/CSI-RS availability indication. For example, when PEI is used to indicate the availability of TRS/CSI-RS in one paging cycle, the effective time may be calculated according to the duration of one paging cycle (Paging cycleduration in the following formula), as shown in fig. 9. In this case, the validity period (i.e., the validity time) is until the next PO (i.e., PO 2) starts, and the reference point may be calculated from the application delay, which is the time domain duration from the start of PO1 to the receipt of PEI by the UE. The validity period (i.e., the validity time, duration in the following equation) and the application delay (application delay in the following equation) can be calculated by the following equation.

Duration＝Paging cycle–application delay

application delay＝PO+PEI duration

Higher layer configuration:

The validity time of the N paging cycles indicated by the availability of the PEI based TRS/CSI-RS may be configured by a higher layer of the same sib_x (e.g., X is an integer selected from 2 to 13) for configuring TRS/CSI-RS resources of idle/inactive UEs. The contents of the higher layer IEs of this configuration are as follows:

Similarly, when PEI-based signaling is used to indicate the availability indication of the TRS/CSI-RS for N paging cycles, the validity duration may be calculated from the N paging cycle durations, as shown in fig. 10. The duration of the validity period (i.e., the validity time) is until the beginning of the n+1th paging cycle, and the reference point may be calculated from the application delay, which is the duration from the beginning of PO1 until the receipt of PEI by the UE (PEIDuration in the following equation). The validity period (i.e., the validity time, duration in the following equation) and the application delay (application delay in the following equation) can be calculated by the following equation.

Duration＝N×Paging cycle–application delay

application delay＝PO+PEI duration

Higher layer configuration:

(2) Effective time of L1 signaling when On/Off state of TRS/CSI-RS is unstable

The present embodiment of the present invention explains the validity time of the availability indication of the TRS/CSI-RS based on P-DCI and the availability indication of the TRS/CSI-RS based on PEI when the on/off state of the TRS/CSI-RS is unstable before and after the network transmission availability indication. Since the network/gNB cannot immediately turn off the TRS/CSI-RS, different UEs are considered to monitor the P-DCI/PEI at different times. The network/gNB may stop TRS/CSI-RS transmission after all UEs receive the TRS/CSI-RS. Thus, the TRS/CSI-RS is available in the network for a short time and, depending on its availability, the network may transmit its availability indication. In other words, the TRS/CSI-RS state is on before transmitting the availability indication and is off immediately after the gNB transmits the availability indication of the TRS/CSI-RS, which may mislead the UE in the AGC and synchronization procedure. In this case, a validity period is necessary, which directs the UE TRS/CSI-RS to be available in a short time, and not for AGC and synchronization purposes. Further, in this case, since the TRS/CSI-RS on/off switching state is unstable, the TRS/CSI-RS availability indication cannot be used for N paging cycles.

Examples of indicating valid times based on P-DCI are provided below.

When the TRS/CSI-RS on/off state is unstable, the availability indication of the TRS/CSI-RS based on P-DCI may be used, the validity time of the availability indication of the TRS/CSI-RS may be calculated according to a TRS/CSI-RS on/off switching condition in the network. For example, the availability of the TRS/CSI-RS indicates the duration of the validity period until the TRS/CSI-RS switches from on to off in the network, the reference point being the time domain position at the end of the PO duration, as shown in fig. 11.

Examples of PEI-based indication of validity time are provided below.

When the TRS/CSI-RS on/off state is unstable, the availability indication of the TRS/CSI-RS based on PEI is used, the validity time of the availability indication of the TRS/CSI-RS may be calculated according to a TRS/CSI-RS on/off switching condition in the network. For example, the validity period of the availability indication of the TRS/CSI-RS is valid before the TRS/CSI-RS switches from ON (ON) to OFF (OFF) in the network, and the reference point may be calculated from an applied delay, which is the duration from PO1 to the UE receiving PEI, as shown in fig. 12. When the validity period expires, the UE will enter the TRS/CSI-RS inactive duration and it may rely on SSB-based synchronization prior to paging.

(3) Effective time of SIB-based signaling indication

In some cases, SIB based signaling may be used to transmit the TRS/CSI-RS availability indication, e.g., when the UE does not have an active version of the stored sib_x for the TRS/CSI-RS configuration (e.g., X is an integer from 2 to 13) or the UE moves to a new cell. The validity time of the availability indication of SIB based TRS/CSI-RS may be designed based on explicit or implicit availability indication, wherein explicit availability indication is a 1-bit indication carried in sib_x for TRS/CSI-RS configuration to idle/inactive mode UE, implicit availability indication is based on presence/absence of TRS/CSI-RS configuration in sib_x.

For SIB based explicit availability indication, the duration of the validity period is until the next PO, and the reference point is from the time of validity when the UE decodes sib_x based explicit availability indication. On the other hand, the reference point is the time position in sib_x where the UE receives the TRS/CSI-RS configuration until the TRS/CSI-RS configuration is present (e.g., currently present) in sib_x, regardless of the PO duration.

In the prior art, a general validity time is configured for the availability indication of all TRS/CSI-RS, irrespective of the availability indication signaling of TRS/CSI-RS and/or the on/off state of TRS/CSI-RS in the network, which may result in the network configuring the validity time of the availability indication of TRS/CSI-RS as an inaccurate validity time for idle/inactive UEs. Compared with the prior art, the invention proposes that the validity time of the availability indication of the TRS/CSI-RS is designed and configured according to the signaling used for the availability indication of the TRS/CSI-RS, and on the other hand, according to the on/off state of the TRS/CSI-RS in the network. This allows the BS/network to configure the TRS/CSI-RS availability indication to the idle/inactive UE for accurate active time, thereby saving power consumption.

The embodiment of the invention has the following beneficial effects: 1. solves the problems in the prior art; 2. reducing signaling overhead; 3. avoiding additional unusable signals; 4. providing an accurate validity time for the TRS/CSI-RS availability indication; 5. providing good communication performance. Some embodiments of the invention are used in 5G-NR chipset vendors, V2X communication system development vendors, automotive manufacturers, including automobiles, trains, trucks, buses, bicycles, motorcycles, helmets, etc., unmanned aerial vehicles (unmanned aerial vehicles), smart phone manufacturers, communication devices for public safety, AR/VR device manufacturers, such as games, conferences/seminars, educational objectives. Some embodiments of the invention are a combination of "technologies/procedures" that may be employed in the 3GPP specifications to create the final product. Some embodiments of the invention may employ unlicensed band communication in 5G NR. Some embodiments of the invention propose a technical mechanism.

The embodiment of the invention also provides a computer readable storage medium for storing a computer program. The computer-readable storage medium enables a computer to perform the corresponding processes implemented by the UE/BS in each of the methods of the embodiments of the present invention. For brevity, details are not repeated here.

The embodiments of the present invention also provide a computer program product comprising computer program instructions. The computer program product enables a computer to perform the respective processes implemented by the UE/BS in each of the methods of the embodiments of the present invention. For brevity, details are not repeated here.

The embodiment of the invention also provides a computer program. The computer program enables a computer to perform the respective procedures implemented by the UE/BS in each of the methods of the embodiments of the present invention. For brevity, details are not repeated here.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is performed by hardware or software depends upon the particular application and design constraints imposed on the technical solution. Those skilled in the art may use different methods to implement the functionality of each particular application described, but such implementation is not to be considered as beyond the scope of the present invention.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but is intended to cover various arrangements included within the scope of the appended claims without departing from the broadest interpretation of the claims.

Claims

1. A method of validity time of an availability indication, performed by a user equipment, UE, in a network, the method comprising:

receiving an availability indication of a tracking reference signal TRS/channel state information reference signal CSI-RS from the network by signalling while in an idle/inactive state; and

The validity time indicated by the availability of the network configured TRS/CSI-RS,

Wherein the validity time of the availability indication of the TRS/CSI-RS is based on a signaling type for the availability indication of the TRS/CSI-RS, the validity time of the availability indication of the TRS/CSI-RS being represented by a validity time and a reference point, wherein the validity time is the validity time of the availability indication of the TRS/CSI-RS, the reference point being a time position at which the availability indication of the TRS/CSI-RS becomes valid.

2. The method of claim 1, wherein the validity time of the availability indication of TRS/CSI-RS is dependent on whether an on/off state of the TRS/CSI-RS in the network is stable.

3. The method of claim 1, wherein the on/off state of the TRS/CSI-RS in the network is stable when the TRS/CSI-RS remains on/off for a certain time before and after the network transmits the availability indication of TRS/CSI-RS; when the duration of the TRS/CSI-RS switching between on and off is compared to the specific time when the network transmits a TRS/CSI-RS availability indication, the on/off state of the TRS/CSI-RS in the network is unstable.

4. The method of claim 1, wherein a validity time of the availability indication of the TRS/CSI-RS is dependent on a number of paging cycles the signaling carries the availability indication of the TRS/CSI-RS.

5. The method of any of claims 1-4, wherein the availability indication of the TRS/CSI-RS is based on the availability indication of a TRS/CSI-RS carried by paging downlink control information, P-DCI, wherein the availability indication of a TRS/CSI-RS carried by the P-DCI is carried by L1 signaling.

6. The method of claim 5, wherein the validity time is a time position from a first paging occasion PO of the P-DCI until a start of a next PO when the availability of TRS/CSI-RS carried by the P-DCI indicates that the first PO is complete.

7. The method of claim 6, wherein the effective time is a duration of the paging cycle minus a duration of the PO.

8. The method of claim 5, wherein when the P-DCI carries N paging cycles indicated by the availability of the TRS/CSI-RS, the active time is from a start of a first paging cycle until a start of an (n+1) th paging cycle, and the reference point is a time position at which the first paging cycle of the P-DCI is completed.

9. The method of claim 8 wherein the active time is the duration of one paging cycle multiplied by N, minus the duration of the PO.

10. The method of any of claims 1-4, wherein the availability indication of the TRS/CSI-RS is based on paging early indication, PEI, carried TRS/CSI-RS, wherein the availability indication of the PEI carried TRS/CSI-RS is carried by an L1 signal.

11. The method of claim 10, wherein when the availability of TRS/CSI-RS carried by the PEI indicates in one paging cycle, the validity time is from a first PO in the paging cycle in which the PEI is located until a start of a next PO, and the reference point is calculated from an application delay, wherein the application delay is a duration from the first PO until the PEI is received.

12. The method of claim 11, wherein the active time is a duration of the paging cycle minus the application delay.

13. The method of claim 10, wherein the validity time is from a first PO up to a start of an n+1th paging cycle and the reference point is calculated from the application delay, wherein the application delay is a duration from the first PO of a paging cycle in which the PEI is located until the PEI is received, when the PEI carries the availability indication of the TRS/CSI-RS for N paging cycles.

14. The method of claim 13, wherein the active time is a duration of one paging cycle multiplied by N, and subtracting the application delay.

15. The method according to any of claims 1 to 14, characterized in that the validity time of the availability indication of the TRS/CSI-RS is configured by upper layer parameters in the same system information block sib_x used for configuring TRS/CSI-RS resources for the UE in idle/inactive state, where X is an integer from 2 to 13.

16. A method according to any of claims 1 to 3, characterized in that the availability indication of the TRS/CSI-RS is based on the availability indication of a TRS/CSI-RS of P-DCI, wherein the availability indication of the TRS/CSI-RS of the P-DCI is carried by L1 signalling, and the validity time is continued until the TRS/CSI-RS of the network is switched on to off, the reference point being the time position at which the PO carrying the P-DCI ends, if the on/off state of the TRS/CSI-RS in the network is unstable.

17. A method according to any of claims 1-3, characterized in that the availability indication of the TRS/CSI-RS is the availability indication of PEI-based TRS/CSI-RS carried by L1 signalling, if the on/off state of TRS/CSI-RS in the network is unstable, the active time is until the state of TRS/CSI-RS in the network switches from on to off, and the reference point is calculated from an application delay, wherein the application delay is the time domain duration from the PO of the paging cycle in which PEI is located until PEI is received.

18. The method of claim 1, wherein the availability indication of the TRS/CSI-RS is the availability indication of a system information block, SIB, based TRS/CSI-RS, the availability indication of the SIB based TRS/CSI-RS being carried by SIB signaling, a validity time of the availability indication of the SIB based TRS/CSI-RS being an explicit availability indication or an implicit availability indication.

19. The method of claim 18, wherein in the case of the explicit availability indication, the validity time is from a first PO to a next PO of a paging cycle in which SIB based signaling is applied, and the reference point is a time from when the explicit availability indication is decoded.

20. The method of claim 18, wherein in the case of the implicit availability indication, the validity time is until a TRS/CSI-RS configuration is currently present, irrespective of a PO duration, and the reference point is a time position when the TRS/CSI-RS configuration is applied.

21. A method of active time of availability indication, performed by a base station, BS, in a network, the method comprising:

Transmitting an availability indication of a tracking reference signal TRS/channel state information reference signal CSI-RS in an idle/inactive state of the UE to the user equipment UE through signaling; and

Configuring the UE using a validity time of the availability indication of TRS/CSI-RS;

Wherein the validity time of the availability indication of the TRS/CSI-RS is based on a signaling type for the availability indication of the TRS/CSI-RS, the validity time of the availability indication of the TRS/CSI-RS being represented by a validity time and a reference point, wherein the validity time is a time when the availability indication of the TRS/CSI-RS is valid, and the reference point is a time position when the availability indication of the TRS/CSI-RS becomes valid.

22. The method of claim 21, wherein the validity time of the availability indication of TRS/CSI-RS is dependent on whether an on/off state of the TRS/CSI-RS in the network is stable.

23. The method of claim 21, wherein the on/off state of the TRS/CSI-RS in the network is stable when the TRS/CSI-RS remains on/off for a certain time before and after the network transmits the availability indication of TRS/CSI-RS; when the duration of the TRS/CSI-RS switching between on and off is compared to the specific time when the network transmits a TRS/CSI-RS availability indication, the on/off state of the TRS/CSI-RS in the network is unstable.

24. The method of claim 21, wherein a validity time of the availability indication of the TRS/CSI-RS is dependent on a number of paging cycles the signaling carries the availability indication of the TRS/CSI-RS.

25. The method of any of claims 21-24, wherein the availability indication of the TRS/CSI-RS is based on the availability indication of a TRS/CSI-RS carried by paging downlink control information, P-DCI, wherein the availability indication of a TRS/CSI-RS carried by the P-DCI is carried by L1 signaling.

26. The method of claim 25, wherein the validity time is a time position from a first paging occasion PO of the P-DCI until a start of a next PO when the availability of TRS/CSI-RS carried by the P-DCI indicates that the first PO is complete.

27. The method of claim 26, wherein the active time is a duration of the paging cycle minus a duration of the PO.

28. The method of claim 25, wherein when the P-DCI carries N paging cycles indicated by the availability of the TRS/CSI-RS, the active time is from a start of a first paging cycle until a start of an (n+1) th paging cycle, and the reference point is a time position at which the first paging cycle of the P-DCI is completed.

29. The method of claim 28 wherein the active time is the duration of one paging cycle multiplied by N, minus the duration of the PO.

30. The method of any of claims 21 to 24, wherein the availability indication of the TRS/CSI-RS is based on paging early indication, PEI, carried TRS/CSI-RS, wherein the availability indication of the PEI carried TRS/CSI-RS is carried by an L1 signal.

31. The method of claim 30, wherein when the availability of TRS/CSI-RS carried by the PEI indicates in one paging cycle, the validity time is from a first PO in the paging cycle in which the PEI is located until a start of a next PO, and the reference point is calculated from an application delay, wherein the application delay is a duration from the first PO until the PEI is received.

32. The method of claim 31, wherein the active time is a duration of the paging cycle minus the application delay.

33. The method of claim 30, wherein the validity time is from a first PO up to a start of an n+1th paging cycle and the reference point is calculated from the application delay, wherein the application delay is a duration from the first PO of a paging cycle in which the PEI is located until the PEI is received, when the PEI carries the availability indication of the TRS/CSI-RS for N paging cycles.

34. The method of claim 33 wherein the active time is the duration of one paging cycle multiplied by N, minus the application delay.

35. The method according to any of claims 21 to 34, characterized in that the validity time of the availability indication of the TRS/CSI-RS is configured by upper layer parameters in the same system information block sib_x used for configuring TRS/CSI-RS resources for the UE in idle/inactive state, where X is an integer from 2 to 13.

36. The method of any of claims 21 to 23, wherein the availability indication of the TRS/CSI-RS is based on P-DCI, wherein the availability indication of the TRS/CSI-RS of the P-DCI is carried by L1 signaling, and wherein the validity time is continued until the TRS/CSI-RS of the network is turned on to off, and wherein the reference point is a time position at which a PO carrying the P-DCI ends if an on/off state of the TRS/CSI-RS in the network is unstable.

37. The method according to any of claims 21 to 23, wherein the availability indication of the TRS/CSI-RS is an indication of the availability of PEI-based TRS/CSI-RS carried by L1 signalling, and wherein if the on/off state of TRS/CSI-RS in the network is unstable, the active time is until the state of TRS/CSI-RS in the network switches from on to off, and the reference point is calculated from an application delay, wherein the application delay is the time domain duration from the PO of the paging cycle in which PEI is located until PEI is received.

38. The method of claim 21, wherein the availability indication of the TRS/CSI-RS is the availability indication of a system information block, SIB, based TRS/CSI-RS, the availability indication of the SIB based TRS/CSI-RS being carried by SIB signaling, a validity time of the availability indication of the SIB based TRS/CSI-RS being an explicit availability indication or an implicit availability indication.

39. The method of claim 18, wherein in the case of the explicit availability indication, the validity time is from a first PO to a next PO of a paging cycle in which SIB based signaling is applied, and the reference point is a time from when the explicit availability indication is decoded.

40. The method of claim 38, wherein in the case of the implicit availability indication, the validity time is until a TRS/CSI-RS configuration is currently present, irrespective of a PO duration, and the reference point is a time position when the TRS/CSI-RS configuration is applied.

41. A user equipment, UE, in communication with a base station, BS, in a network, the UE comprising a processor for invoking and executing program instructions stored in memory to perform:

42. The user equipment of claim 41, wherein the validity time of the availability indication of a TRS/CSI-RS is dependent on whether an on/off state of the TRS/CSI-RS in the network is stable.

43. The user equipment according to claim 41, wherein the on/off state of the TRS/CSI-RS in the network is stable when the TRS/CSI-RS remains on/off for a certain time before and after the network transmits the indication of the availability of TRS/CSI-RS; when the duration of the TRS/CSI-RS switching between on and off is compared to the specific time when the network transmits a TRS/CSI-RS availability indication, the on/off state of the TRS/CSI-RS in the network is unstable.

44. The user equipment of claim 41, wherein the validity time of the availability indication of the TRS/CSI-RS is dependent on a number of paging cycles the signaling carries the availability indication of the TRS/CSI-RS.

45. The user equipment of any one of claims 41-44, wherein the availability indication of the TRS/CSI-RS is based on the availability indication of a TRS/CSI-RS carried by paging downlink control information, P-DCI, wherein the availability indication of a TRS/CSI-RS carried by the P-DCI is carried by L1 signaling.

46. The user equipment of claim 45, wherein the validity time is a time position from a first paging occasion PO of the P-DCI until a start of a next PO when the availability of TRS/CSI-RS carried by the P-DCI indicates that the first PO is complete.

47. The user equipment of claim 46 wherein the effective time is the duration of the paging cycle minus the duration of the PO.

48. The user equipment of claim 45, wherein when the P-DCI carries N paging cycles of the indication of availability of the TRS/CSI-RS, the validity time is from a start of a first paging cycle until a start of an (n+1) th paging cycle, and the reference point is a time position at which the first paging cycle of the P-DCI is completed.

49. The user equipment of claim 48 wherein the effective time is the duration of one paging cycle times N minus the duration of the PO.

50. The user equipment of any one of claims 41 to 44, wherein the availability indication of the TRS/CSI-RS is based on a paging early indication, PEI, carrying TRS/CSI-RS, the availability indication of the PEI carrying TRS/CSI-RS being carried by an L1 signal.

51. The user equipment of claim 50 wherein when the availability of TRS/CSI-RS carried by the PEI indicates in one paging cycle, the validity time is from a first PO in the paging cycle in which the PEI is located until a start of a next PO, and the reference point is calculated from an application delay, wherein the application delay is a duration from the first PO until the PEI is received.

52. The user equipment of claim 51 wherein the effective time is the duration of the paging cycle minus the application delay.

53. The user equipment of claim 50 wherein when the PEI carries the indication of availability of the TRS/CSI-RS for N paging cycles, the active time is from a first PO up to a beginning of an N+1th paging cycle, and the reference point is calculated from the application delay, wherein the application delay is a duration from the first PO of the paging cycle in which the PEI is located until the PEI is received.

54. The user equipment of claim 53 wherein the effective time is the duration of one paging cycle times N minus the application delay.

55. The user equipment according to any of claims 41 to 54, characterized in that the validity time of the availability indication of the TRS/CSI-RS is configured by upper layer parameters in the same system information block sib_x used for configuring TRS/CSI-RS resources for the UE in idle/inactive state, where X is an integer from 2 to 13.

56. The user equipment of any one of claims 41-43, wherein the availability indication of the TRS/CSI-RS is based on P-DCI, wherein the availability indication of the TRS/CSI-RS of the P-DCI is carried by L1 signaling, wherein the validity time is continued until the TRS/CSI-RS of the network is turned on to off, and wherein the reference point is a time position at which a PO carrying the P-DCI ends if an on/off state of the TRS/CSI-RS in the network is unstable.

57. The user equipment of any one of claims 41 to 43, wherein the availability indication of the TRS/CSI-RS is an indication of the availability of PEI-based TRS/CSI-RS carried by L1 signaling, and wherein if the on/off state of TRS/CSI-RS in the network is unstable, the active time is until the state of TRS/CSI-RS in the network switches from on to off, and wherein the reference point is calculated from an application delay, wherein the application delay is a time domain duration from a PO of a paging cycle in which PEI is located until PEI is received.

58. The user equipment of claim 41, wherein the availability indication of the TRS/CSI-RS is the availability indication of a system information block, SIB, based TRS/CSI-RS, the availability indication of the SIB based TRS/CSI-RS being carried by SIB signaling, a validity time of the availability indication of a SIB based TRS/CSI-RS being either an explicit availability indication or an implicit availability indication.

59. The user equipment of claim 58, wherein in the case of the explicit availability indication, the validity time is from a first PO to a next PO of a paging cycle in which SIB based signaling is applied, and the reference point is a time from when the explicit availability indication is decoded.

60. The user equipment of claim 58, wherein in the case of the implicit availability indication, the active time is until a TRS/CSI-RS configuration is currently present, regardless of PO duration, and the reference point is a time position when the TRS/CSI-RS configuration is applied.

61. A base station BS in communication with user equipment UE in a network, the base station comprising a processor for invoking and executing program instructions stored in memory to perform:

62. The base station of claim 61, wherein the validity time of the availability indication of TRS/CSI-RS depends on whether an on/off state of the TRS/CSI-RS in the network is stable.

63. The base station of claim 61, wherein the on/off state of the TRS/CSI-RS in the network is stable when the TRS/CSI-RS remains on/off for a specified time before and after the network transmits the indication of availability of TRS/CSI-RS; when the duration of the TRS/CSI-RS switching between on and off is compared to the specific time when the network transmits a TRS/CSI-RS availability indication, the on/off state of the TRS/CSI-RS in the network is unstable.

64. The base station of claim 61, wherein a validity time of the availability indication of the TRS/CSI-RS depends on a number of paging cycles the signaling carries the availability indication of the TRS/CSI-RS.

65. The base station of any one of claims 61-64, wherein the availability indication of the TRS/CSI-RS is based on the availability indication of a TRS/CSI-RS carried by paging downlink control information, P-DCI, wherein the availability indication of a TRS/CSI-RS carried by the P-DCI is carried by L1 signaling.

66. The base station of claim 65, wherein when the availability of TRS/CSI-RS carried by the P-DCI indicates that it is in one paging cycle, the validity time is from a first paging occasion PO of the P-DCI until a start of a next PO, and the reference point is a time position where the first PO completes.

67. The base station of claim 66, wherein the effective time is a duration of the paging cycle minus a duration of the PO.

68. The base station of claim 65, wherein when the P-DCI carries N paging cycles indicated by the availability of the TRS/CSI-RS, the active time is from a start of a first paging cycle until a start of an (n+1) th paging cycle, and the reference point is a time position at which the first paging cycle of the P-DCI is completed.

69. The base station of claim 68 wherein the active time is the duration of one paging cycle multiplied by N, minus the duration of the PO.

70. The base station of any one of claims 61-64, wherein the availability indication of the TRS/CSI-RS is based on paging early indication, PEI, carried by the TRS/CSI-RS, wherein the availability indication of the PEI carried by the PEI is carried by an L1 signal.

71. The base station of claim 70 wherein when the availability of TRS/CSI-RS carried by the PEI indicates in one paging cycle, the validity time is from a first PO in the paging cycle in which the PEI is located until a start of a next PO, and the reference point is calculated from an application delay, wherein the application delay is a duration from the first PO until the PEI is received.

72. The base station of claim 71, wherein the active time is a duration of the paging cycle minus the application delay.

73. The base station of claim 70 wherein when the PEI carries the indication of availability of TRS/CSI-RS for N paging cycles, the validity time is from a first PO up to a start of an n+1th paging cycle, and the reference point is calculated from the application delay, wherein the application delay is a duration from the first PO of a paging cycle in which the PEI is located until the PEI is received.

74. The base station of claim 73, wherein the active time is the duration of one paging cycle multiplied by N, minus the applied delay.

75. The base station according to any one of claims 61 to 74, characterized in that the validity time of the availability indication of the TRS/CSI-RS is configured by upper layer parameters in the same system information block sib_x used for configuring TRS/CSI-RS resources for the UE in idle/inactive state, where X is an integer from 2 to 13.

76. The base station of any one of claims 61-63, wherein the availability indication of the TRS/CSI-RS is based on P-DCI, wherein the availability indication of the TRS/CSI-RS of the P-DCI is carried by L1 signaling, and wherein the validity time is continued until the TRS/CSI-RS of the network is turned on to off, and wherein the reference point is a time position at which a PO carrying the P-DCI ends if an on/off state of the TRS/CSI-RS in the network is unstable.

77. The base station of any one of claims 61-63, wherein the availability indication of the TRS/CSI-RS is an indication of the availability of PEI-based TRS/CSI-RS carried by L1 signaling, and wherein if the on/off state of TRS/CSI-RS in the network is unstable, the active time is until the state of TRS/CSI-RS in the network switches from on to off, and wherein the reference point is calculated from an application delay, wherein the application delay is a time domain duration from a PO of a paging cycle in which PEI is located until PEI is received.

78. The base station of claim 61, wherein the availability indication of the TRS/CSI-RS is the availability indication of a system information block SIB based TRS/CSI-RS, the availability indication of the SIB based TRS/CSI-RS being carried by SIB signaling, a validity time of the availability indication of a SIB based TRS/CSI-RS being an explicit availability indication or an implicit availability indication.

79. The base station of claim 78, wherein in the case of the explicit availability indication, the validity time is from a first PO to a next PO of a paging cycle in which SIB based signaling is applied, and the reference point is a time from when the explicit availability indication is decoded.

80. The base station of claim 78, wherein in the case of the implicit availability indication, the active time is until a TRS/CSI-RS configuration is currently present, regardless of PO duration, and the reference point is a time position when the TRS/CSI-RS configuration is applied.

81. A computer readable storage medium storing a computer program enabling a computer to perform the method of any one of claims 1 to 20.

82. A computer readable storage medium storing a computer program enabling a computer to perform the method of any one of claims 21 to 40.

83. A computer program product comprising computer program instructions enabling a computer to perform the method of any one of claims 1 to 20.

84. A computer program product comprising computer program instructions enabling a computer to perform the method of any one of claims 21 to 40.

85. A computer program enabling a computer to carry out the method of any one of claims 1 to 20.

86. A computer program enabling a computer to carry out the method of any one of claims 21 to 40.