CN114599073A

CN114599073A - Method and device for determining state of reference signal, terminal equipment and storage medium

Info

Publication number: CN114599073A
Application number: CN202011402942.4A
Authority: CN
Inventors: 周化雨; 雷珍珠; 赵思聪; 潘振岗
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2022-06-07
Also published as: WO2022116837A1

Abstract

The application provides a method and a device for determining the state of a reference signal, a terminal device and a storage medium, wherein the method for determining the state of the reference signal comprises the following steps: acquiring indication information; and determining the state of at least one reference signal according to the indication information and/or a preset rule, wherein the state is an available state or an unavailable state. For the terminal device to determine the state of the reference signal.

Description

Method and device for determining state of reference signal, terminal equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for determining a state of a reference signal, a terminal device, and a storage medium.

Background

When the terminal device is in an idle state, the terminal device needs to monitor a Physical Downlink Control Channel (PDCCH) for carrying a paging message, so as to determine whether the paging message is sent to the terminal device.

In the related art, when the terminal device is in an idle state, if monitoring the paging PDCCH is to be implemented, an additional reference signal needs to be sent to the terminal device at the network device, so as to reduce the time for the terminal device to wake up before the paging occasion, and further perform Automatic Gain Control (AGC) adjustment/time-frequency synchronization (channel tracking) and the like according to the synchronization signal block and the additional reference signal, thereby implementing paging reception and energy saving. In the above-mentioned technology, the additional reference signal is generally a signal that is not present in the communication system (including the network device and the UE), and thus the overhead and capacity of the communication system are large and reduced. At present, in order to reduce the overhead and increase the capacity of a communication system, a network device generally transmits a reference signal transmitted to a terminal device in a connected state to a terminal device in an idle state.

However, the network device usually sends the reference signal sent to the connected terminal device to the idle terminal device, so that after the idle terminal device receives the reference signal, it cannot determine whether the reference signal is available.

Disclosure of Invention

The application provides a method and a device for determining the state of a reference signal, a terminal device and a storage medium, which are used for enabling the terminal device to determine the state of the reference signal.

In a first aspect, an embodiment of the present application provides a method for determining a state of a reference signal, which is applied to a terminal device, and the method includes:

acquiring indication information;

and determining the state of at least one reference signal according to the indication information and/or a preset rule, wherein the state is an available state or an unavailable state.

In a second aspect, an embodiment of the present application provides a device for determining a state of a reference signal, where the device is applied to a terminal device, and the device includes: an acquisition module and a determination module, wherein,

the acquisition module is used for acquiring the indication information;

the determining module is used for determining the state of at least one reference signal according to the indication information and/or a preset rule, wherein the state is an available state or an unavailable state.

In a third aspect, an embodiment of the present application provides a terminal device, including: a processor and a memory;

the memory stores computer-executable instructions;

the processor executes the computer-executable instructions stored by the memory, causing the processor to perform the method as in the first aspect above.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the processor executes the computer-executable instructions, the method in the first aspect is implemented.

In a fifth aspect, the present application provides a computer program product, which includes a computer program, and when executed by a processor, the computer program implements the method in the first aspect.

The embodiment of the application provides a method and a device for determining the state of a reference signal, a terminal device and a storage medium, wherein the method for determining the state of the reference signal comprises the following steps: acquiring indication information; and determining the state of at least one reference signal according to the indication information and/or a preset rule. In the method, the terminal device determines the state of at least one reference signal according to the indication information, so that after the terminal device receives the reference signal sent by the network device, the state of the reference signal (i.e. whether the reference signal is available) can be determined.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is an application scenario diagram of a method for determining a state of a reference signal according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a method for determining a state of a reference signal according to an embodiment of the present application;

FIG. 3 is a schematic view of a window provided in an embodiment of the present application;

FIG. 4 is a first schematic diagram of a first reference point provided in an embodiment of the present application;

FIG. 5 is a second schematic diagram of a first reference point provided in the embodiments of the present application;

FIG. 6 is a first schematic diagram illustrating a second reference point provided in an embodiment of the present application;

FIG. 7 is a second schematic diagram illustrating a second reference point provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a state determination apparatus for a reference signal according to an embodiment of the present application;

fig. 9 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the prior art, when a terminal device is in an idle state, for example, the idle state is an idle mode (idle mode) or a Radio Resource Control (RRC) idle (idle), the terminal device needs to monitor a paging PDCCH. Generally, a terminal device needs to determine a paging PDCCH monitoring occasion (paging PDCCH monitoring occasion) through the configuration of a Paging Frame (PF), a Paging Occasion (PO) and a paging search space set (paging search space set), and then monitor the paging PDCCH on the paging PDCCH monitoring occasion. In a New Radio (NR) of 5G, terminal equipment performs AGC adjustment/time frequency tracking (channel tracking)/measurement according to a Synchronization Signal Block (SSB), and then can monitor a paging PDCCH at a paging occasion. In practical applications, synchronization signal block burst (SS-burst) (each SS-burst includes one or more SSBs) does not exist in each subframe or each time slot, but is transmitted in a certain time period (e.g., 5 ms, 10 ms, 20 ms, etc.), so generally, the terminal device needs to wake up at least before the last two SS-bursts before PO and use the two SS-bursts to perform AGC adjustment/time-frequency synchronization/measurement. When the terminal device experiences a long sleep, for example, the interval between two POs to be monitored by the terminal device is large due to PO configuration, the UE may need to wake up before three SS-bursts before the PO, and use the three SS-bursts to perform AGC adjustment/time-frequency synchronization or AGC adjustment/time-frequency synchronization/measurement, which may cause the terminal device to wake up prematurely in advance, thereby causing the terminal device to consume more power.

Further, in the prior art, the network device may configure an additional reference signal and send the additional reference signal to the terminal device, so that the terminal device may use fewer SS-bursts (e.g., one) and the additional reference signal to perform AGC adjustment/time-frequency synchronization, or AGC adjustment/time-frequency synchronization/measurement, thereby preventing the terminal device from waking up prematurely, and achieving the purpose of saving the power of the terminal device.

In the above prior art, although the extra reference signal shortens the wake-up time of the terminal device to achieve the purpose of saving the power of the terminal device, the extra reference signal is usually a reference signal that is not available in the communication system, and therefore, the overhead of the communication system needs to be increased, and the capacity of the communication system needs to be reduced. In this regard, a possible enhancement is to enable the terminal device in the idle state to utilize the reference signal (TRS/CSI-RS) used by the terminal device in the connected state, that is, the network device shares the reference signal used by the terminal device in the connected state with the middle terminal device in the idle state, so as to reduce the communication overhead. However, the reference signal of the connected terminal device may be unavailable (or absent or invalid) as a certain connected terminal device leaves the connected state (RRC releases the release), and at this time, the terminal device in the idle state needs to be notified that the reference signal is unavailable.

Therefore, how to notify whether the reference signal of the idle terminal device is available is a problem to be solved urgently. In order to solve the above problem, an embodiment of the present application provides a method for determining a state of a reference signal, so that a terminal device may obtain indication information at a Paging Monitoring Occasion (PMO), and determine a state of the reference signal (which is an available state or an unavailable state), that is, the terminal device can determine whether the reference signal is available, so as to solve a technical problem that an idle terminal device cannot determine whether the reference signal is available.

An application scenario of the method for determining a state of a reference signal according to the embodiment of the present application is described below with reference to fig. 1.

Fig. 1 is an application scenario diagram of a method for determining a state of a reference signal according to an embodiment of the present application. As shown in fig. 1, the communication system includes: a network device 11 and a plurality of terminal devices. For example, the plurality of terminal devices include terminal device 12 and terminal device 13. Wherein, the terminal device 12 is in a connected state, and the terminal device 13 is in an idle state. Network device 11 may transmit the reference signal transmitted to terminal device 12 to terminal device 13. The network device 11 sends the indication information to the terminal device 13 so that the terminal device 13 can determine the state of the reference signal after receiving the indication information.

In the present application, a network device: the device has a wireless transceiving function. Including but not limited to: an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE), a base station (gnnodeb or gNB) or TRP in a new radio interface (NR) technology, a base station in a subsequent evolution system, an access Node in a wireless fidelity (WiFi) system, a wireless relay Node, a wireless backhaul Node, and the like. The base station may be: macro base stations, micro base stations, pico base stations, small stations, relay stations, or balloon stations, etc. Multiple base stations may support the same technology network as mentioned above, or different technologies networks as mentioned above. A base station may contain one or more Transmission Receiving Points (TRPs) that may be co-sited or non-co-sited.

In the present application, a terminal device: the device has a wireless transceiving function. The terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in self-driving (self-driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wearable terminal device, and the like. The terminal device according to the embodiment of the present application may also be referred to as a terminal, a User Equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus. The terminal equipment may also be fixed or mobile.

The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 is a schematic flowchart of a method for determining a state of a reference signal according to an embodiment of the present application. As shown in fig. 2, the method for determining the state of the reference signal provided in this embodiment includes:

s201, acquiring indication information.

Optionally, the execution subject of the embodiment of the present application may be a terminal device, or may also be a state determination device of a reference signal set in the terminal device, where the state determination device may be implemented by a combination of software and/or hardware.

Specifically, the instruction information may be acquired by the following modes 101 to 103:

in the method 101, the indication information is acquired at a Paging Monitoring Occasion (PMO) or a Paging Occasion (PO).

In the method 102, indication information is obtained from Medium Access Control (MAC) signaling, MAC Packet Data Unit (PDU), or MAC Control Element (CE).

In the method 103, the instruction information is acquired in Downlink Control Information (DCI).

The above-described mode 102 can be implemented as follows 1021.

In the manner 1021, acquiring the indication information in the MAC signaling (or MAC PDU or MAC CE) may include: determining the starting position and/or length of the indication information in the MAC signaling (or MAC PDU or MAC CE) according to the higher layer signaling;

and acquiring the indication information from the MAC signaling (or the MAC PDU or the MAC CE) according to the starting position and/or the length.

Specifically, when the frequency domain resource allocation in the DCI is valid, the indication information is carried by MAC signaling (or MAC PDU or MAC CE). MAC signaling (or MAC PDU, or MAC CE) can carry a large amount of information.

Specifically, when the DCI carries the scheduling information and the frequency domain resource allocation in the DCI is valid, the indication information is carried by MAC signaling (or MAC PDU or MAC CE). MAC signaling (or MAC PDU, or MAC CE) can carry a large amount of information.

Wherein the indication information uses bits in the MAC signaling (bits in the MAC PDU or bits in the MAC CE).

For the above mode 103, it may be specifically implemented in the following feasible mode 1031:

1031, determining the starting position and/or length of the indication information in the DCI according to the higher layer signaling; and acquiring indication information from the DCI according to the starting position and/or the length.

Alternatively, the higher layer signaling may be sent by the network device to the terminal device, and directly configure the starting position and length of the indication information in the DCI. For example, if the DCI has a length of 10 bits, a start position of 3 rd bit, and a length of 2 bits, the 3 rd bit and the 4 th bit in the DCI are indication information.

Optionally, the terminal device may derive a starting position and/or length of the indication information in the DCI according to higher layer signaling. For example, the terminal device may derive the location of its PF or PO in a possible PF or PO within a paging cycle (paging cycle) through the configuration information of the paging, thereby deriving the starting location and length of the indication information in the DCI. For another example, the terminal device may derive the location of its PF or PO in a possible PF or PO between the paging indication PDCCH and the next paging indication PDCCH through the configuration information of the paging, thereby deriving the starting location and length of the indication information in the DCI. Alternatively, the length may be determined by a predefined rule. This may simplify higher layer signaling.

In one possible design, acquiring the indication information in the DCI includes: determining the starting position and/or the length of the indication information in the DCI according to the PF or PO needing to be monitored; and acquiring indication information from the DCI according to the starting position and/or the length.

Optionally, the terminal device may derive the starting position and/or the length of the indication information in the DCI according to the PF or PO that the terminal device needs to monitor. For example, the terminal device may derive the location of its PF or PO in a possible PF or PO within a paging cycle (paging cycle), and thus derive the starting location and length of the indication information in the DCI. For another example, the terminal device may derive the position of its PF or PO in the possible PF or PO between the paging indication PDCCH and the next paging indication PDCCH, and thus derive the start position and length of the indication information in the DCI. Alternatively, the length may be determined by a predefined rule. Since high-level signaling is difficult to configure for a single terminal device in an idle state, signaling can be simplified by derivation by the terminal device.

In one possible design, acquiring the indication information in the DCI includes: determining the starting position and/or length of the indication information in the DCI according to the high-level signaling and the PF or PO needing monitoring by the user; and acquiring indication information from the DCI according to the starting position and/or the length. For example, the terminal device derives how many possible PFs or POs are in the paging cycle through the configuration information of the paging, thereby deriving the possible positions of the PFs or POs in the paging cycle of its own PF or PO, and further deriving the starting position and length of the indication information in the DCI. For another example, the terminal device deduces how many possible PFs or POs between the paging indication PDCCH and the next paging indication PDCCH according to the configuration information of the paging, thereby deducing the position of its PF or PO in the possible PF or PO between the paging indication PDCCH and the next paging indication PDCCH, and further deducing the starting position and length of the indication information in the DCI. Alternatively, the length may be determined by a predefined rule. This allows a compromise between signalling control and simplified signalling.

In one possible design, acquiring the indication information in the DCI includes: the terminal device can also derive the starting position and/or length of the indication information in the DCI according to the PO subgroup (corresponding to one subgroup or subset of the terminal device group in the PO) to which the terminal device belongs; and acquiring indication information from the DCI according to the starting position and/or the length. For example, the terminal device first derives the starting position and/or length of the PF or PO to which the indication information belongs in the DCI, and then derives the starting position and/or length of the indication information in the DCI according to the PO subgroup to which the terminal device belongs.

In one possible design, the terminal device may derive the total length of the DCI according to higher layer signaling; and acquiring the indication information from the DCI according to the total length. Only if the total length of the DCI is obtained, the terminal equipment can normally decode the DCI. For example, the terminal device may derive the number of possible PFs or POs in a paging cycle (paging cycle) through the configuration information of paging, thereby deriving the DCI total length. For another example, the terminal device may derive the number of possible PFs or POs between the paging PDCCH and the next paging PDCCH according to the configuration information of paging, so as to derive the DCI total length. Alternatively, the length may be determined by a predefined rule. This may simplify higher layer signaling.

In one possible design, the terminal device may further derive the DCI total length according to a parameter of a PO subgroup (corresponding to a subgroup or subset of the group of terminal devices within the PO); and acquiring the indication information from the DCI according to the total length. For example, the terminal device first derives the possible number of PFs or POs, and then derives the DCI total length according to the PO subset parameter (e.g. the number of PO subsets in a PO).

With respect to the above-described mode 1031, the indication information is carried by DCI or reserved bits in a DCI format (DCI format) corresponding to the DCI.

Specifically, when the DCI does not carry the scheduling information, the indication information is carried by reserved bits of a field in the DCI or reserved bits of a field in the DCI format. The DCI format may be DCI format 1-0 because the paging PDCCH employs DCI format 1-0.

Specifically, when the frequency domain resource allocation in the DCI is invalid, the indication information is carried by bits of the redefined field in the DCI or bits of the redefined field in the DCI format corresponding to the DCI. The DCI format may be DCI format 1-0 because the paging PDCCH employs DCI format 1-0.

In another possible design, when the DCI carries the scheduling information and the frequency domain resource allocation in the DCI is invalid, the indication information is carried by bits of a redefined field in the DCI or bits of a redefined field in the DCI format. The DCI format may be DCI format 1-0 because the paging PDCCH employs DCI format 1-0.

Specifically, the DCI is carried on a paging physical downlink control channel PDCCH.

S202, determining the state of at least one reference signal according to the indication information and/or a preset rule, wherein the state is an available state or an unavailable state.

In one possible design, the state of all reference signals corresponding to the PMO (or PO) associated synchronization signal block SSB is determined. The synchronization signal block SSB associated with the PMO (or PO) may correspond to a plurality of reference signals, and the terminal device determines the states of all the corresponding reference signals, thereby saving communication overhead. Since PMO is a monitoring occasion for paging PDCCH, PMO and paging PDCCH are not distinguished in the following.

In one possible design, the state of a reference signal corresponding to a PMO (or PO) associated synchronization signal block SSB is determined. The synchronization signal block SSB associated with the PMO (or PO) may only correspond to one reference signal, and the terminal device determines the state of the corresponding reference signal, which may be more targeted and more accurate.

Specifically, the state of the at least one reference signal may be determined by the following modes 201 to 203:

mode 201, a state of at least one reference signal is determined according to the indication information.

The indication information is carried in DCI as previously described. This may improve flexibility.

In the method 202, a state of at least one reference signal is determined according to a preset rule.

In order to reduce the overhead of the reference signal, a rule may be preset, so that only the reference signal satisfying the preset rule is valid, for example, the preset rule specifies that the reference signal within a window is valid, and the window parameter is configured by a semi-static parameter.

In the method 203, the state of at least one reference signal is determined according to the indication information and a preset rule.

The indication information can improve the flexibility, the preset rule can reduce the reference signal overhead, and the combination of the indication information and the preset rule can improve the flexibility and reduce the reference signal overhead. For example, the indication information indicates that the subsequent reference signal is valid, and the predetermined rule specifies that the reference signal within a window is valid, and in combination, the subsequent reference signal within a window is valid. For the above 201 to 203, determining the state of at least one reference signal includes: the state of at least one reference signal corresponding to the synchronization signal block SSB associated with the PMO (or PO) is determined.

In a Rel-15 New Radio (NR), at least one PMO is included in one PO, wherein the PMO and a synchronous signal block are associated one by one, namely, in one PO, the Kth PMO is associated with the Kth SSB, wherein the value of K is 1-X, and X is the total number of PMOs included in one PO. In some scenarios, a PO may also be associated with an SSB. Wherein, the at least one reference signal may be configured to correspond to the SSB (having a QCL relationship) through a Transmission Configuration Indication (TCI), where the TCI is transmitted from the network device to the network device. Wherein the at least one reference signal includes a Tracking Reference Signal (TRS) and/or a channel state information-reference signal (CSI-RS).

With respect to the above-mentioned method 201, when determining the state of at least one reference signal corresponding to the synchronization signal block SSB associated with the PMO (or PO) according to the indication information, the following methods 2011 and 2012 can be implemented.

Mode 2011, the indication information is 1 bit, and the 1 bit indicates the state of all reference signals corresponding to the SSB associated with the PMO (or PO).

Manner 2012, the indication information is more than 1 bit, wherein each 1 bit indicates a state of a reference signal corresponding to the PMO (or PO) associated SSB.

For example, the indication information is 1 bit, and when the 1 bit is a first preset value, the state of all the reference signals is indicated to be a usable state; when the 1 bit is a second preset value, the state of all the reference signals is indicated as an unavailable state. The first preset value may be 0 or 1, and the second preset value may be 1 or 0. For example, when the first preset value is 1, the second preset value is 0; when the first preset value is 0, the second preset value is 1.

In the application, the indication information is 1 bit, and 1 bit can be used to indicate the states of all reference signals, so that the overhead of a communication system can be saved.

For example, the indication information is more than 1 bit, and one 1 bit corresponds to the state of one reference signal. For example, when 1 bit is a first preset value, it may indicate that the state of the reference signal corresponding to the 1 bit is an available state; when the 1 bit is the second preset value, the state of the reference signal corresponding to the 1 bit can be indicated as an unavailable state.

In the present application, the indication information is more than 1 bit, and each 1 bit indicates the state of one reference signal, which may increase the overhead of the communication system, but more accurately indicates the state of each reference signal.

It should be noted that the available status indicates that at least one reference signal corresponding to the synchronization signal block SSB associated with the PMO (or PO) is valid (available), existing (present ), or available (usefull).

With respect to the above-mentioned mode 202, determining the state of at least one reference signal according to a preset rule may be implemented by the following mode 2021:

in the manner 2021, after the validation time, the state of the at least one reference signal is determined, wherein,

the effective moment is any one of the following:

the starting time of the next paging cycle (paging cycle) after the PMO or PO;

an end time of an N Orthogonal Frequency Division Multiplexing (OFDM) symbol after the PMO or PO, or an end time of N slots, or an end time of N milliseconds, where N is an integer greater than or equal to 1.

In the above mode 2021, the validation time is included in the preset rule.

The effective time starts at the start of the next paging cycle (paging cycle) after the PMO or PO. That is, at the beginning of the next paging cycle after the PMO or PO, the terminal device considers the state of the at least one reference signal corresponding to the SSB associated with the PMO (or PO) to be an available state or an unavailable state. Generally, for AGC adjustment/time-frequency synchronization, at least one reference signal after the PMO or PO in the current paging cycle is not helpful to the PMO or PO, because the adjusted result cannot be used for reception of the current PMO or PO even if AGC adjustment/time-frequency synchronization is performed), so it is more reasonable that the effective time starts at the next paging cycle.

The validation time starts at the end of N symbols or slots or milliseconds after the PMO or PO. That is, after N symbols or time slots or millisecond ending time after the PMO or PO, the terminal device considers the state of the at least one reference signal corresponding to the SSB associated with the PMO (or PO) to be an available state or an unavailable state. Since the terminal device needs a certain time to receive and decode the PDCCH when the PMO or PO arrives, the terminal device can determine the indication information only when the decoding is successful, and the effective time lags behind a period of time.

The validation time starts at the start of the next paging cycle after the PMO or PO and after the N symbol or slot or millisecond end time after the PMO or PO. That is, after the beginning time of the next paging cycle after the PMO or PO and the end time of N symbols or slots or milliseconds after the PMO or PO, the terminal device considers the state of the PMO (or PO) associated SSB corresponding to at least one reference signal as an available state or an unavailable state. Thus, the effective time starts at the next paging cycle after the PMO or PO and lags behind the PMO or PO for a period of time to avoid the next paging cycle after the PMO or PO following the PMO or PO end time.

With respect to the above-mentioned mode 202, determining the state of at least one reference signal according to a preset rule may also be implemented by the following modes 2022 to 2027:

the method 2022 determines the state of the at least one reference information to be an available state prior to the PMO (or PO).

The method 2023 determines the state of the at least one reference information to be an available state within a window prior to the PMO (or PO).

Mode 2024, after determining the first reference point, the state of the at least one reference signal is a usable state. Wherein, the first reference point distance PMO (or PO) is a first offset. The first offset may then comprise zero and a non-zero positive number. The first reference point precedes the PMO (or PO) and the distance PMO (or PO) is a first offset. The first offset may then comprise a non-zero positive number.

Manner 2025 determines a state of at least one reference signal corresponding to the PMO (or PO) associated SSB to be an available state within the first window. Wherein, the first window is a window with a first reference point before the PMO (or PO) as a starting point.

Mode 2026, the state of the at least one reference signal corresponding to the PMO (or PO) associated SSB before the second reference point is determined to be an available state. Wherein, the second reference point distance PMO (or PO) is a second offset. The second offset may then comprise zero and a non-zero positive number. Optionally, the second reference point precedes the PMO (or PO) and the distance PMO (or PO) is a second offset. The second offset may then comprise a non-zero positive number.

Mode 2027, the state of the at least one reference signal corresponding to the PMO (or PO) associated SSB is determined to be an available state within the second window. Wherein the second window is a window with a second reference point before the PMO (or PO) as an end point.

Optionally, the first reference point, the first offset, the second reference point, and the second offset may all be specified by a preset rule.

Optionally, the first reference point and the second reference point may be specified by a preset rule, and the first offset and the second offset may be included in the signaling.

In this application, the terminal device may consider only the state of at least one reference signal within a window before the PMO (or PO) as an available state or an unavailable state. This may further reduce the overhead of the at least one reference signal.

In the present application, the terminal device may consider only the state of the at least one reference signal before the PMO (or PO) and after the first reference point at which the PMO (or PO) is the first offset as the available state or the unavailable state. This avoids the terminal device using at least one reference signal that is too far away from the PMO (or PO). When the terminal device uses at least one reference signal that is too far away from the PMO (or PO), the terminal device is not powered down, and the overhead of the communication system is increased.

In this application, the terminal device may consider only the state of at least one reference signal before the PMO (or PO) and before the second reference point at which the PMO (or PO) is the second offset as the available state or the unavailable state. This avoids the terminal device using at least one reference signal that is too close to the PMO (or PO). In practice, when the terminal device uses at least one reference signal that is too close to the PMO (or PO) for AGC adjustment/time-frequency synchronization, it cannot be applied to the reception of PDCCH in time.

In the method for determining a state of a reference signal provided in this embodiment, indication information is acquired; and determining the state of at least one reference signal according to the indication information. In the method, the terminal device determines the state of at least one reference signal according to the indication information, so that after the terminal device receives the reference signal sent by the network device, the state of the reference signal (i.e. whether the reference signal is available) can be determined.

Further, in the prior art, in order to shorten the wake-up time of the terminal device, reduce the overhead of the communication system, and increase the capacity, the network device usually sends the reference signal sent to the connected terminal device to the idle terminal device, so that after the idle terminal device receives the reference signal, it is impossible to determine whether the reference signal is available, which further causes the wake-up time of the terminal device, reduces the overhead of the communication system, and increases the capacity of the communication system. In the application, the terminal device indicates information to determine the state of at least one reference signal, so that the terminal device can determine whether the reference signal is available, thereby achieving the purposes of shortening the wake-up time of the terminal device, reducing the overhead of a communication system and improving the capacity of the communication system, i.e. realizing the joint optimization of the energy conservation of the terminal device, the overhead of the communication system and the capacity of the communication system.

On the basis of the above embodiments, the window, the first reference point, and the second reference point will be described below with reference to fig. 3 to 7.

Fig. 3 is a schematic view of a window provided in an embodiment of the present application. As shown in fig. 3, the state of at least one reference message corresponding to the SSB associated with the PMO (or PO) is an available state in a window before the PMO (or PO).

Fig. 4 is a first schematic diagram of a first reference point provided in the embodiment of the present application. As shown in fig. 4, the distance PMO or PO from the first reference point is a first offset, and after the first reference point, the state of at least one reference information corresponding to the SSB associated with the PMO (or PO) is an available state.

Fig. 5 is a second schematic diagram of the first reference point provided in the embodiment of the present application. As shown in fig. 5, the state of the at least one reference information corresponding to the SSB associated with the PMO (or PO) is an available state in the first window starting from the first reference point.

Fig. 6 is a first schematic diagram of a second reference point provided in the embodiment of the present application. As shown in fig. 6, the distance from the first reference point to the PMO or PO is a second offset, and after the second reference point, the state of the at least one piece of reference information corresponding to the SSB associated with the PMO (or PO) is an available state.

Fig. 7 is a second schematic diagram of a second reference point provided in the embodiment of the present application. As shown in fig. 7, the state of the at least one reference information corresponding to the SSB associated with the PMO (or PO) after the second reference point of the second window with the second reference point as the end point is the available state.

Fig. 8 is a schematic structural diagram of a device for determining a state of a reference signal according to an embodiment of the present application. As shown in fig. 8, the state determination device 10 for reference signals includes: acquisition module 101 and determination module 102

The obtaining module 101 is configured to obtain indication information;

the determining module 102 is configured to determine a state of the at least one reference signal according to the indication information and/or a preset rule, where the state is an available state or an unavailable state.

The state determination apparatus 10 of the reference signal provided in the embodiment of the present application may implement the technical solution shown in the above method embodiment, and its implementation principle and beneficial effect are similar, and are not described herein again.

In one possible design, the determining module 102 is specifically configured to:

and determining the state of at least one reference signal corresponding to the synchronization signal block SSB associated with the paging listening occasion PMO or the paging occasion PO.

In one possible design, the obtaining module 101 is specifically configured to:

the indication information is obtained on the PMO or PO.

In one possible design, the obtaining module 101 is specifically configured to:

and acquiring the indication information in downlink control information DCI, medium access control MAC signaling, MAC packet data unit PDU or MAC control unit CE.

In a possible design, when acquiring the indication information in the downlink control information DCI, the acquiring module 101 is specifically configured to:

determining the starting position and/or length of the indication information in the DCI according to the higher layer signaling;

and acquiring indication information from the DCI according to the starting position and/or the length.

In one possible design, the indication information is carried by reserved bits in the DCI or DCI format to which the DCI corresponds.

In one possible design, when the DCI does not carry scheduling information, the indication information is carried by reserved bits of a field in the DCI or reserved bits of a field in the DCI format.

In one possible design, the indication information is carried by bits of a redefined field in the DCI or bits of a redefined field in the DCI format when the frequency domain resource allocation in the DCI is invalid.

In one possible design, the DCI is carried on a paging physical downlink control channel, PDCCH.

In one possible design, the indication information is 1 bit, and the 1 bit indicates the state of all reference signals corresponding to the PMO or PO associated SSB.

In one possible design, the indication information is more than 1 bit, where each 1 bit indicates the state of a reference signal corresponding to a PMO or PO associated SSB.

In one possible design, the determining module 102 is further configured to:

determining a state of at least one reference signal after the validation time;

wherein, the effective time is any one of the following:

the starting time of the next paging cycle after the PMO or PO;

the end time of the N orthogonal frequency division multiplexing OFDM symbol after PMO or PO, or the end time of N time slots, or the end time of N milliseconds, wherein N is an integer greater than or equal to 1;

after the start time of the next paging cycle after the PMO or PO and before the end time of N OFDM symbols after the PMO or PO, or the end time of N slots, or the end time of N milliseconds.

determining that the state of the at least one reference information is an available state before the PMO or PO.

and determining that the state of the at least one piece of reference information is a usable state after the first reference point, wherein the first reference point distance PMO or PO is a first offset.

and determining that the state of the at least one piece of reference information is a usable state before a second reference point, wherein the second reference point distance PMO or PO is a second offset.

Fig. 9 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present application. As shown in fig. 9, the terminal device 20 includes: a processor 201 and a memory 202,

the processor 201 and the memory 202 are connected by a bus 203.

In a specific implementation process, the processor 201 executes computer-executable instructions stored in the memory 202, so that the processor 201 executes the method for determining the state of the reference signal in the above method embodiment.

For a specific implementation process of the processor 201, reference may be made to the above method embodiments, which have similar implementation principles and technical effects, and details of this embodiment are not described herein again.

In the embodiment shown in fig. 9, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the methods disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

The memory may comprise high speed RAM memory, and may also include non-volatile storage NVM, such as disk memory.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The embodiment of the present application further provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when the processor executes the computer executing instruction, the method for determining the state of the reference signal in the foregoing method embodiment is implemented.

The present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for determining a state of a reference signal in the foregoing method embodiments is implemented.

The computer-readable storage medium may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in the apparatus.

The division of the unit is only a logical division, and other division ways are possible in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

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

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

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining the state of a reference signal is applied to a terminal device, and the method comprises the following steps:

acquiring indication information;

2. The method of claim 1, wherein the determining the state of the at least one reference signal comprises:

3. The method of claim 1, wherein the obtaining the indication information comprises:

obtaining indication information on the PMO or the PO.

4. The method of claim 1, wherein the obtaining the indication information comprises:

the indication information is obtained in Medium Access Control (MAC) signaling, MAC Packet Data Unit (PDU), or MAC control unit (CE).

5. The method of claim 1, wherein obtaining the indication information in Downlink Control Information (DCI) comprises:

determining the starting position and/or the length of the indication information in the DCI according to high-layer signaling;

and acquiring the indication information from the DCI according to the starting position and/or the length.

6. The method of claim 5, wherein the indication information is carried by reserved bits in the DCI or a DCI format corresponding to the DCI.

7. The method of claim 6, wherein the indication information is carried by reserved bits of a field in the DCI or reserved bits of a field in the DCI format when no scheduling information is carried in the DCI.

8. The method of claim 6, wherein the indication information is carried by bits of a redefined field in the DCI or bits of a redefined field in the DCI format when a frequency domain resource allocation in the DCI is invalid.

9. The method according to any of claims 5 to 8, wherein the DCI is carried on a paging physical downlink control channel, PDCCH.

10. The method of claim 2, wherein the indication information is 1 bit, and the 1 bit indicates the states of all reference signals corresponding to the SSBs associated with the PMO or the PO.

11. The method of claim 2, wherein the indication information has more than 1 bit, and wherein each 1 bit indicates a state of a reference signal corresponding to the SSB associated with the PMO or the PO.

12. The method of claim 1, further comprising:

determining a state of at least one reference signal after the validation time;

wherein, the effective time is any one of the following:

a starting time of a next paging cycle after the PMO or the PO;

an end time of an N orthogonal frequency division multiplexing OFDM symbol after the PMO or the PO, or an end time of N slots, or an end time of N milliseconds, where N is an integer greater than or equal to 1;

13. The method of claim 2, wherein the determining the state of the at least one reference signal comprises:

determining that the state of the at least one reference information is an available state before the PMO or the PO.

14. The method of claim 2, wherein the determining the state of the at least one reference signal comprises:

determining that the state of the at least one reference information is a usable state after a first reference point, wherein the first reference point is a first offset from the PMO or the PO.

15. The method of claim 2, wherein the determining the state of the at least one reference signal comprises:

determining that the state of the at least one reference information is a usable state before a second reference point, wherein the second reference point is a second offset from the PMO or the PO.

16. An apparatus for determining a state of a reference signal, the apparatus comprising: an acquisition module and a determination module, wherein,

the acquisition module is used for acquiring the indication information;

the determining module is configured to determine a state of at least one reference signal according to the indication information and/or a preset rule, where the state is an available state or an unavailable state.

17. A terminal device, comprising: a processor and a memory;

the memory stores computer execution instructions;

the processor executes computer-executable instructions stored by the memory to cause the processor to perform the method of any of claims 1 to 15.

18. A computer-readable storage medium having computer-executable instructions stored thereon which, when executed by a processor, implement the method of any one of claims 1 to 15.

19. A computer program product comprising a computer program, characterized in that the computer program realizes the method according to any of claims 1 to 15 when executed by a processor.