CN111417175B

CN111417175B - Energy-saving signal sending method, receiving method and equipment

Info

Publication number: CN111417175B
Application number: CN201910010621.0A
Authority: CN
Inventors: 杨拓; 胡丽洁; 侯雪颖
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2023-01-13
Anticipated expiration: 2039-01-07
Also published as: CN111417175A

Abstract

The embodiment of the invention provides a method and a device for sending and receiving energy-saving signals, which realize a scheme for receiving and sending the energy-saving signals suitable for an NR system, meet the uplink and downlink requirements of an NR semi-static frame structure and the beam scanning requirements of a paging PDCCH and a SS/PBCH Block, finally realize the detection of the unnecessary PDCCH of a terminal and save the energy consumption of the device.

Description

Energy-saving signal sending method, receiving method and equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for sending and receiving energy-saving signals.

Background

In a Downlink Control CHannel of a New-generation communication technology New Radio (5G NR), a Physical Downlink Control CHannel (PDCCH) is configured by two parts, namely, a Control resource SET (core SET) and a search space SET (search space SET). The CORESET mainly configures the resource position of the PDCCH, including frequency domain resources, a resource mapping mode, the size of resource element group bundling (REG bundle), and the like. The search space set mainly configures a detection period, a detection offset value, a detection time length, aggregation levels, the number of PDCCH candidate sets of each aggregation level, and the like of the search space set.

The NR synchronization mechanism adopts a beam scanning mode to realize enhancement, and a synchronization signal Block (SS/PBCH Block) is transmitted at different time of different beams (beam), wherein one SS/PBCH Block consists of a Primary Synchronization Signal (PSS) of one symbol, a Secondary Synchronization Signal (SSS) of one symbol and a Physical Broadcast Channel (PBCH) of two symbols. In order to support broadcast channel beamforming, NR designs a plurality of transmission positions of the SS/PBCH Block in one synchronization signal period: the maximum number of the SS/PBCH blocks is L, and the values of the different frequency bands L can be 4 (< 3 GHz), 8 (2.4 GHz-6 GHz 30kHz subcarrier interval asymmetric frequency spectrums), 8 (3 GHz-6 GHz) and 64 (6 GHz-52.6 GHz). The number of SS/PBCH blocks actually transmitted by the base station in one synchronization signal period may be less than L. All SS/PBCH Block locations within a period are typically limited to within 5ms, as shown in fig. 1, which may contain 2 SS/PBCH blocks within 1ms or 0.5ms of each shaded portion.

In NR, the time-frequency domain position of the core set (i.e. the core set carrying the Type0-PDCCH common search space) where the PDCCH of the scheduling system information block 1 (SIB 1) is located is configured by PBCH. And the NR supports three multiplexing modes of CORESET and SS/PBCH Block for bearing a Type0-PDCCH common search space: TDM (Pattern 1), FDM (Pattern 3), and hybrid TDM/FDM (Pattern 2), as shown in fig. 2. Only TDM Pattern 1 is supported on a 6GHz low frequency band; and the high frequency band above 6GHz supports three patterns.

For pattern 1, the PBCH configures the detection location of the Type0-PDCCH common search space. Each SS/PBCH Block has a corresponding Type0-PDCCH common search space, the UE continuously detects two time slots according to the Type0-PDCCH common search space configured by the PBCH, and the base station only sends the scheduling Type0-PDCCH common search space in one time slot. For pattern 2 and pattern3, the UE will only detect one slot on the CORESET of the bearer Type0-PDCCH common search space corresponding to the SS/PBCH Block.

In addition, in NR, a default paging (paging) search space (Type 2-PDCCH common search space) uses the same CORESET as a Type0-PDCCH common search space. The default detection position of the P Type2-PDCCH common search space is the same as the detection position of the Type0-PDCCH common search space, that is, each transmitted SS/PBCH Block has a PDCCH carrying the Type2-PDCCH common search space corresponding to the SS/PBCH Block. Different from the wide-beam transmission synchronization channel and the control channel in LTE, in NR, both SS/PBCH Block and PDCCH carrying Type2-PDCCH common search space implement coverage through beam scanning, and one Paging Occasion (PO) corresponds to a set of PDCCH for beam scanning.

In paging, since a PO is for a group of UEs, after detecting the PDCCH, the UE needs to further read a paging list (paging list) in the PDSCH to determine whether it is paged. Meanwhile, the UE needs to wake up to read the PDCCH at each PO, but there is not necessarily a real paging message, and the UE in the RRC _ IDLE state consumes a lot of energy on PDCCH detection due to unnecessary PDCCH detection. In a narrowband internet of things (NB-IoT), for UE energy saving, it is proposed to introduce a Wake Up Signal (WUS) in an RRC IDLE state, and if a certain PO has real paging, a base station sends the WUS before the PO, otherwise no WUS is sent. If the UE detects a WUS corresponding to a PO, the UE wakes up at the PO to detect the PDCCH, otherwise, the UE does not detect the PDCCH at the PO position.

In NR, the concept of a power saving signal can also be introduced, similar to the wake-up signal in NB-IOT. If the base station needs to indicate a certain UE to detect the PDCCH at the PO position, the base station sends an energy-saving signal, the UE detects the PDCCH bearing the Type2-PDCCH common search space after detecting the energy-saving signal, otherwise, the UE does not detect the PDCCH at the PO, and the energy saving of the UE can be realized. Unlike NB-IoT, NR employs a semi-static frame structure, and NR supports semi-static up-down switching periods of 0.5ms,0.625ms,1ms,2ms,2.5ms,5ms, and 10ms, as well as combined periods, i.e., two periods form a new period of (X + Y) ms, where X and Y are from {0.5,0.625,1,1.25,2,2.5,5,10} ms. In each semi-static uplink and downlink switching period, the cell-level high-level signaling configures the number of Downlink (DL) timeslots and the number of Uplink (UL) timeslots in the period, and the timeslots not configured in the middle are variable (flexible) timeslots.

And the NR also introduces beam scanning of a synchronization channel and a control channel, the PDCCH carrying the Type2-PDCCH common search space and the SS/PBCH Block have a one-to-one mapping relationship, one PO corresponds to one group of beam scanning, and the SS/PBCH Block and the PDCCH complete cell coverage through the beam scanning.

Therefore, a scheme is needed to design a suitable energy-saving signal transceiving scheme for the NR system, which not only meets the uplink and downlink requirements of the NR semi-static frame structure, but also meets the requirement of beam scanning for carrying the Type2-PDCCH common search space PDCCH and the SS/PBCH Block, so as to finally avoid detection of unnecessary PDCCHs by the UE and achieve energy saving.

Meanwhile, the energy-saving signal transceiving scheme can also be suitable for the UE to detect the energy-saving requirements of other PDCCHs in the RRC connection state.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a method, and a device for transmitting and receiving an energy saving signal suitable for an NR system.

The embodiment of the invention provides a method for sending an energy-saving signal, which comprises the following steps:

determining a transmission period and/or a time domain position pattern of the energy-saving signal;

and when the terminal needs to be instructed to detect the physical downlink control channel, according to the sending period and/or the time domain position pattern of the energy-saving signal, sending the energy-saving signal to the terminal before sending the physical downlink control channel.

The embodiment of the invention also provides a method for receiving the energy-saving signal, which comprises the following steps:

the terminal determines the target time domain position of the energy-saving signal according to the energy-saving signal processing time, the energy-saving signal sending period and the time domain position of the target physical downlink control channel to be detected;

and the terminal detects an energy-saving signal at the target time domain position, detects the target physical downlink control channel when detecting the energy-saving signal, and abandons the detection of the target physical downlink control channel when not detecting the energy-saving signal.

An embodiment of the present invention further provides a base station, including:

a processor for determining a transmission period and/or a time domain position pattern of the power saving signal;

and the transceiver is used for sending the energy-saving signal to the terminal before sending the physical downlink control channel according to the sending period and/or the time domain position pattern of the energy-saving signal when the terminal needs to be indicated to detect the physical downlink control channel.

An embodiment of the present invention further provides a terminal, including:

the processor is used for determining the target time domain position of the energy-saving signal according to the energy-saving signal processing time, the energy-saving signal sending period and the time domain position of the target physical downlink control channel to be detected;

and the transceiver is used for detecting an energy-saving signal in the target time domain position, detecting the target physical downlink control channel when the energy-saving signal is detected, and abandoning the detection of the target physical downlink control channel when the energy-saving signal is not detected.

An embodiment of the present invention further provides a communication device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for transmitting or receiving a power saving signal as described above.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the method for sending or receiving an energy saving signal as described above are implemented.

The transmitting method, receiving method and device for the energy-saving signal provided by the embodiment of the invention provide a transmitting and receiving scheme for the energy-saving signal suitable for an NR system, which not only meets the uplink and downlink requirements of an NR semi-static frame structure, but also meets the requirements of beam scanning of a PDCCH carrying a Type2-PDCCH common search space and a SS/PBCH Block, and finally realizes the detection of the unnecessary PDCCH of a terminal and saves the energy consumption of the device. Meanwhile, the energy-saving signal transceiving scheme can also be suitable for the UE to detect the energy-saving requirements of other PDCCHs in the RRC connection state.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

figure 1 is a schematic of the slot distribution of a SS/PBCH Block contained within a 5ms window of the prior art;

fig. 2 is a schematic diagram of a multiplexing manner of CORESET and SS/PBCH Block carrying Type0-PDCCH common search space in the prior art;

fig. 3 is a schematic view of an application scenario of a method for transmitting/receiving an energy-saving signal according to an embodiment of the present invention;

fig. 4 is a flowchart of a method for transmitting an energy saving signal according to an embodiment of the present invention;

figure 5 is an exemplary diagram of the location of a SS/PBCH Block in accordance with an embodiment of the present invention;

fig. 6 to 10 are several examples of time domain positions of the energy saving signal provided by the embodiment of the present invention;

fig. 11 is a flowchart of a method for receiving an energy-saving signal according to an embodiment of the present invention;

fig. 12 is an exemplary diagram for determining a target time domain position of a power saving signal according to an embodiment of the present invention;

FIG. 13 is a block diagram of a base station according to an embodiment of the present invention;

fig. 14 is a second block diagram of a base station according to an embodiment of the present invention;

fig. 15 is one of the structural diagrams of a terminal of the embodiment of the present invention;

fig. 16 is a second block diagram of the terminal according to the embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims of the present application 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 may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Moreover, 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 description and in the claims "and/or" means at least one of the connected objects.

The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A and GSM are described in the literature from an organization named "third Generation Partnership project" (3 rd Generation Partnership project,3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Referring to fig. 3, fig. 3 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 31 and a network device 32. The terminal 31 may also be referred to as a User terminal or a User Equipment (UE), and the terminal 31 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the terminal 31 is not limited in the embodiment of the present invention. The network device 32 may be a Base Station and/or a network element of a core network, wherein the Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), wherein the Base Station may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable term in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that the Base Station in the NR system is only taken as an example in the embodiment of the present invention, but the specific type of the Base Station is not limited.

The base stations may communicate with the terminals 31 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of the base stations may communicate with each other, directly or indirectly, over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

The base stations may communicate wirelessly with the terminals 31 via one or more access point antennas. Each base station may provide communication coverage for a respective coverage area. The coverage area of an access point may be partitioned into sectors that form only a portion of the coverage area. A wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

The communication links in a wireless communication system may comprise an Uplink for carrying Uplink (UL) transmissions (e.g., from terminal 31 to network device 32) or a Downlink for carrying Downlink (DL) transmissions (e.g., from network device 32 to terminal 31). The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.

As described in the background art, when designing the NR power saving signal for paging, the same beam scanning as that performed by the SS/PBCH Block and the PDCCH needs to be considered, and the limitation on the time domain position of the power saving signal due to the semi-static frame structure needs to be considered.

In addition, for the connected users, there is also a problem that the PDCCH is detected but the scheduling information thereof is not available, so that the UE detects the PDCCH in an empty manner, which results in large energy consumption. Similar to IDLE (IDLE) state UE, the embodiment of the present invention may introduce an energy saving signal in a connected state, where if the base station needs to instruct a certain UE to detect the PDCCH, the base station sends the energy saving signal, the UE detects the PDCCH after detecting the energy saving signal, otherwise, the UE does not detect the PDCCH, thereby achieving UE energy saving.

The method for receiving and transmitting the energy-saving signal, provided by the embodiment of the invention, configures the time domain position of the energy-saving signal of NR, can meet the uplink and downlink requirements of an NR semi-static frame structure and the beam scanning requirements of a paging PDCCH and a SS/PBCH Block, and finally realizes that the UE avoids the detection of an unnecessary PDCCH and realizes energy saving.

Referring to fig. 4, a method for sending an energy saving signal according to an embodiment of the present invention, when applied to a base station, includes:

step 41, determining a transmission period and/or a time domain position pattern of the energy saving signal.

Here, 1 or more power saving signals may be transmitted per transmission period of the power saving signal; the time domain position pattern of the power saving signal represents the resource position of the power saving signal in the time domain. In the embodiment of the invention, the sending period and/or the time domain position pattern of the energy-saving signal can be predefined through a protocol, and the base station and the terminal determine the sending period and/or the time domain position pattern of the energy-saving signal according to a mode predetermined by the protocol. Of course, the base station may also configure the transmission period and/or the time domain position pattern of the energy saving signal to the terminal in a network configuration manner.

And 42, when the terminal needs to be instructed to detect the physical downlink control channel, sending the energy-saving signal to the terminal before sending the physical downlink control channel according to the sending period and/or the time domain position pattern of the energy-saving signal.

Here, when the terminal is required to detect a Physical Downlink Control Channel (PDCCH), for example, when a paging of the terminal arrives, the terminal may send the energy-saving signal to the terminal according to the sending cycle and/or the time-domain position pattern of the energy-saving signal before sending the physical downlink control channel, so that the terminal in a sleep state may be woken up to detect the PDCCH.

Of course, in the embodiment of the present invention, if the terminal does not need to detect the PDCCH, when the transmission opportunity of the energy saving signal arrives, the embodiment of the present invention may give up transmitting the energy saving signal to the terminal, and avoid waking up the terminal in a sleep state, so that power consumption of the terminal caused by detecting the PDCCH may be saved.

Through the steps, the embodiment of the invention can realize the detection of unnecessary PDCCHs of the UE and save the energy consumption of the terminal.

When the terminal is required to detect the PDCCH, considering the processing time of the terminal for receiving the energy-saving signal, the time domain interval between the energy-saving signal and the PDCCH is required to be longer than the processing time of the energy-saving signal. The embodiment of the invention can define a standard value of the energy-saving signal processing time in a protocol pre-defined mode, and the standard value can be set by referring to parameters such as terminal performance in a network, so that both the network and the terminal can obtain the standard value in advance. For example, the energy-saving signal processing time may be configured in advance at the base station, and in this case, the base station may transmit the configuration value of the energy-saving signal processing time to the terminal, so that both the network and the terminal can obtain the same energy-saving signal processing time. For another example, the energy-saving signal processing time may also be determined by the terminal according to its performance, and the terminal reports the energy-saving signal processing time to the base station, so that the network and the terminal have the same parameter of the energy-saving signal processing time.

Specific schemes of the transmission period and the time domain position pattern of the power saving signal are further given below.

As an implementation manner, in this embodiment of the present invention, a transmission period of the energy-saving signal may be the same as a transmission period of a synchronization signal Block SS/PBCH Block, and the energy-saving signal is located in a timeslot where the SS/PBCH Block is located.

Here, the power saving signal may be predefined by a related protocol to be located in a time slot where the SS/PBCH Block is located, and a period of the power saving signal is the same as a transmission period of the SS/PBCH Block. The number of the energy-saving signals in one energy-saving signal period is the same as that of the SS/PBCH blocks, and the energy-saving signals correspond to one another. The time domain position pattern of the energy-saving signal in the time slot of the SS/PBCH Block may also be predefined by a protocol, or configured for the terminal through a high-layer signaling sent by the base station.

Specifically, the energy-saving signals correspond to SS/PBCH blocks one to one, and the SS/PBCH blocks and the energy-saving signals corresponding thereto are located in different symbols. One specific example is as follows:

fig. 5 shows an example of the position of the SS/PBCH Block within a 5ms window when 4 SS/PBCH blocks are transmitted within a transmission period of each SS/PBCH Block with a sub-carrier bandwidth of 15 KHz. SS blocks 0 to 3 in the figure indicate the positions of 4 SS/PBCH blocks in one transmission cycle, respectively. In the transmission period of the SS/PBCH Block shown in fig. 5, the symbol position of the power saving signal corresponding to each SS/PBCH Block may be predefined or configured by a protocol according to the embodiment of the present invention, and fig. 6 to 8 show examples of several specific power saving signal (WUS) time domain position patterns. In the above illustration, SS Block x represents SS/PBCH Block x, and WUS x represents energy saving signals corresponding to SS/PBCH Block x.

As shown in fig. 6, in one transmission period of the energy-saving signal, the energy-saving signal is located in a first symbol, and an SS/PBCH Block corresponding to the energy-saving signal is located in a second symbol; wherein the second symbol precedes the first symbol and is adjacent to the first symbol. Here, each first symbol includes 2 symbols, and each second symbol includes 4 symbols.

As shown in fig. 7, in one transmission period of the energy-saving signal, the energy-saving signal is located in a first symbol, and an SS/PBCH Block corresponding to the energy-saving signal is located in a second symbol; wherein the second symbol is located after and adjacent to the first symbol. Here, each second symbol includes 2 symbols, and each first symbol includes 4 symbols.

As shown in fig. 8, one transmission cycle of the energy saving signal includes at least one group of energy saving signals, where each group of energy saving signals includes a first energy saving signal and a second energy saving signal, the first energy saving signal is located in a first symbol, and a first SS/PBCH Block corresponding to the first energy saving signal is located in a second symbol; the second energy-saving signal is located in a third symbol, and a second SS/PBCH Block corresponding to the second energy-saving signal is located in a fourth symbol; the second symbol, the first symbol, the third symbol and the fourth symbol are ordered according to the time domain sequence and are adjacent in sequence. Here, each of the second/fourth symbols includes 4 symbols, respectively, and each of the first/third symbols includes 1 symbol, respectively.

As another implementation manner, in this embodiment of the present invention, a transmission period of the energy-saving signal may be different from a transmission period of a synchronization signal Block SS/PBCH Block, where a time domain position of the energy-saving signal includes a time slot in which a non-SS/PBCH Block is located, and the time slot in which the non-SS/PBCH Block is located is a time slot not including the SS/PBCH Block. That is, the power saving signal may exist in a slot not including the SS/pbcblock.

In this implementation, the transmission period of the energy-saving signal is an integer multiple of at least one of the following times: a duration of half a radio frame; the transmission time of the SS/PBCH Block; a semi-static uplink and downlink switching period; a predefined time duration value. Specifically, the base station may indicate the transmission period of the energy saving signal to the terminal through a higher layer signaling (e.g., RRC signaling) or Downlink Control Information (DCI).

The transmission time of the SS/PBCH Block is assumed to be W1, and a relationship between W1 and the subcarrier bandwidth SCS and the maximum number L of SS/PBCH blocks in a synchronization signal period is shown in table 1 below:

SCS	L	W1
			15k
	4	2ms
			15k
	8	4ms
			30k
	4	1ms
			30k
	8	2ms
			120k	64	5ms
240k	64	2.5ms

TABLE 1

In this implementation, the power saving signal may include at least one time domain position pattern, and the at least one time domain position pattern is predefined by a protocol or configured by a base station to the terminal.

Further, the time domain position of the energy saving signal may further include a subframe where the SS/PBCH Block is located. That is, the power saving signal exists in a slot not including SS/PBCH Block and also exists in a slot including SS/PBCH Block. In this case, a time domain position pattern of the power saving signal included in the slot in which the SS/PBCH Block is located may be different from a time domain position pattern of the power saving signal included in the slot in which the non-SS/PBCH Block is located.

Several examples of the above implementations are provided below:

example 1

The base station configures only one time domain location pattern of the power saving signal. The transmission period of the power saving signal may be configured by the base station through higher layer signaling, for example, the transmission period of the power saving signal is configured to be 5ms. Fig. 9 shows the time domain position pattern of a specific energy saving signal of this example 1, and it can be seen that the time domain position patterns of the energy saving signal in two adjacent 5ms windows are the same.

Example 2

The base station configures two energy-saving signal patterns, when the energy-saving signal is located in a time slot of a SS/PBCH Block, the energy-saving signal adopts a time domain position pattern 1, and when the energy-saving signal is located in a time slot of a non-SS/PBCH Block, the energy-saving signal adopts a time domain position pattern 2. The transmission period of the energy saving signal may be configured by the base station through higher layer signaling, for example, the transmission period of the energy saving signal is configured to be 5ms. Fig. 10 shows the time domain position pattern of a specific energy saving signal of this example 2, and it can be seen that the time domain position patterns of the energy saving signal in two adjacent 5ms windows are different.

The method of the embodiments of the present invention has been described above mainly from the base station side. The description is further made from the terminal side.

Referring to fig. 11, an embodiment of the present invention provides a method for receiving an energy saving signal, where the method is applied to a terminal side, and the method includes:

and step 111, the terminal determines the target time domain position of the energy-saving signal according to the energy-saving signal processing time, the energy-saving signal sending period and the time domain position of the target physical downlink control channel to be detected.

And step 112, the terminal detects an energy-saving signal at the target time domain position, detects the target physical downlink control channel when the energy-saving signal is detected, and abandons the detection of the target physical downlink control channel when the energy-saving signal is not detected.

Through the steps, the terminal detects the target physical downlink control channel only when detecting the energy-saving signal, so that useless detection processing of the physical downlink control channel can be avoided, and the power consumption of the terminal is reduced.

In step 111, when determining the target time domain position of the energy saving signal, the following steps may be specifically performed:

s1, determining a candidate sending period of the energy-saving signal, wherein the candidate sending period is the kth sending period of the energy-saving signal before the target physical downlink control channel, and the initial value of k is 1;

s2, calculating a time domain interval of a first signal and the target physical downlink control channel at a time domain position, wherein the first signal is an energy-saving signal or a synchronous signal block SS/PBCHLock positioned in the candidate sending period;

s3, if the time domain interval is not less than the energy-saving signal processing time, determining a target time domain position of the energy-saving signal according to the time domain position of the energy-saving signal in the candidate sending period; and if the time domain interval is less than the energy-saving signal processing time, adding 1 to the value of k, and returning to the step S1.

With reference to fig. 12, if the time interval between the PDCCH time window to be detected and the latest energy-saving signal transmission period before the PDCCH time window is greater than the energy-saving signal processing time, the latest energy-saving signal transmission period is used as the target time domain position of the energy-saving signal, otherwise, the search is continued for the previous energy-saving signal transmission period until the energy-saving signal transmission period meeting the above requirement is found, and the target time domain position of the energy-saving signal is obtained.

In this embodiment of the present invention, the time domain interval between the first signal and the target physical downlink control channel at the time domain position may be determined based on different reference positions, which are described below separately.

When the terminal is in an idle state, a time domain interval between the first signal and the target physical downlink control channel in a time domain position may be any one of the following intervals:

1) And the time domain interval between the last symbol of the SS/PBCH Block with the largest index number in the candidate sending period and the first symbol of the control resource set where the first search space is located. Namely, the distance from the last symbol of the maximum SS/PBCH Block index to the first symbol of the CORESET where the Type2-PDCCH common search space corresponding to the minimum SS/PBCH Block index is located.

2) And the time domain interval between the last symbol of the SS/PBCH Block with the minimum index number in the candidate sending period and the first symbol of the control resource set where the first search space is located. Namely, the distance from the last symbol of the minimum SS/PBCH Block index to the first symbol of the CORESET where the Type2-PDCCH common search space corresponding to the minimum SS/PBCH Block index is located.

3) And the time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block with the largest index number in the candidate sending period and the first symbol of the control resource set where the first search space is located. Namely, the distance from the last symbol of the energy-saving signal corresponding to the maximum SS/PBCH Block index to the first symbol of the core set where the Type2-PDCCH common search space corresponding to the minimum SS/PBCH Block index is located in the transmission period of the energy-saving signal.

4) And the time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block with the minimum index number in the candidate sending period and the first symbol of the control resource set where the first search space is located. Namely, the distance from the last symbol of the energy-saving signal corresponding to the minimum SS/PBCH Block index to the first symbol of the core set where the Type2-PDCCH common search space corresponding to the minimum SS/PBCH Block index is located in the transmission period of the energy-saving signal.

And the first search space is a Type2-PDCCH common search space corresponding to the SS/PBCH Block with the minimum index number in the candidate sending period.

When the terminal is in a connected state, a time domain interval between the first signal and the target physical downlink control channel in a time domain position may be any one of the following intervals:

1) And a time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block with the largest index number in the candidate sending period and the first symbol of the control resource set where the target physical downlink control channel is located. That is, the distance from the last symbol of the energy-saving signal corresponding to the maximum SS/PBCH Block index to the first symbol of the core set where the PDCCH that the UE needs to detect is located in the transmission period of the energy-saving signal.

2) And the terminal selects the time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block selected in the random access stage or the synchronization process and the first symbol of the control resource set where the target physical downlink control channel is located. Namely, the distance from the last symbol of the energy-saving signal corresponding to the SS/PBCH Block index selected in the random access phase or the synchronization process to the first symbol of the core set where the PDCCH that the UE needs to detect is located.

In practical applications, if SIB1/Paging CORESET (i.e., CORESET carrying Type0-PDCCH common search space and/or CORESET carrying Type2-PDCCH common search space) and SS/PBCH Block use a pattern 1 multiplexing manner, a search space associated with one SS/PBCH Block is two consecutive slots, and it is not known which slot actually transmits PDCCH, so that consecutive slots must be detected. In order to reduce the overhead of finding a detection paging search space (Type 2-PDCCH common search space), the embodiment of the present invention may determine, through information carried by the energy-saving signal, a time slot for actually transmitting the PDCCH, specifically, the time slot is predefined by a protocol or configured with a predetermined bit, a cyclic shift, an orthogonal cover code, or a sequence index carried by the energy-saving signal, where different values of the predetermined bit, the cyclic shift, the orthogonal cover code, or the sequence index correspond to different time slots. In this way, the terminal can obtain the indication information of the target time slot where the target physical downlink control channel is located from the detected energy-saving signal, wherein the indication information is a predetermined bit carried by the energy-saving signal, a cyclic shift value adopted by the energy-saving signal, an orthogonal cover code or a sequence index; and then, determining the target time slot according to the indication information, and detecting the target physical downlink control channel on the target time slot. For example, the terminal may determine whether the PDCCH is transmitted in the 1 st time slot or the 2 nd time slot according to different values of a predetermined bit, a cyclic shift, an orthogonal cover code, or a sequence index carried by the received wake-up signal, and then perform detection according to the determined time slot position, which may reduce power consumption of the terminal and improve detection efficiency.

Corresponding to the above embodiments, an embodiment of the present invention provides a base station shown in fig. 13. Referring to fig. 13, the base station 130 includes:

a processor 131 for determining a transmission period and/or a time domain position pattern of the power saving signal;

the transceiver 132 is configured to send the energy-saving signal to the terminal before sending the physical downlink control channel according to the sending period and/or the time domain position pattern of the energy-saving signal when the terminal needs to be instructed to detect the physical downlink control channel.

Preferably, the transceiver is further configured to give up sending the energy-saving signal to the terminal when it is not required to instruct the terminal to detect the physical downlink control channel.

Preferably, the time domain interval between the energy-saving signal and the physical downlink control channel is greater than or equal to the energy-saving signal processing time; wherein the energy-saving signal processing time is predefined by a protocol, or is configured at the base station side in advance, or is reported by the terminal.

Preferably, the transmission period of the energy-saving signal is the same as the transmission period of the synchronization signal Block SS/PBCH Block, and the energy-saving signal is located in a slot in which the SS/PBCH Block is located.

Preferably, the time domain location pattern of the power saving signal is predefined by a protocol or configured by the base station.

Preferably, the power saving signals correspond to SS/PBCH blocks one to one, and the SS/PBCH blocks and the power saving signals corresponding thereto are located in different symbols.

Preferably, a transmission period of the energy-saving signal is different from a transmission period of a synchronization signal Block SS/PBCH Block, a time domain position of the energy-saving signal includes a time slot in which a non-SS/PBCH Block is located, and the time slot in which the non-SS/PBCH Block is located is a time slot not including the SS/PBCH Block.

Preferably, the transmission period of the energy saving signal is an integral multiple of at least one of the following times: the duration of half a radio frame; the transmission time of the SS/PBCH Block; a semi-static uplink and downlink switching period; a predefined time duration value.

Preferably, the transceiver is further configured to indicate a transmission period of the energy-saving signal to the terminal through higher layer signaling or DCI.

Preferably, the power saving signal includes at least one time domain position pattern, and the at least one time domain position pattern is predefined by a protocol or configured to the terminal by a base station.

Preferably, the time domain position of the energy-saving signal further includes a time slot in which the SS/PBCH Block is located;

and the time domain position pattern of the energy-saving signal contained in the time slot in which the SS/PBCH Block is positioned is different from the time domain position pattern of the energy-saving signal contained in the time slot in which the non-SS/PBCH Block is positioned.

Referring to fig. 14, another structural diagram of a network-side device 1400 according to an embodiment of the present invention includes: a processor 1401, a transceiver 1402, a memory 1403, and a bus interface, wherein:

the processor 1401 is configured to read a program in the memory, and execute the following processes:

determining a transmission period and/or a time domain position pattern of an energy-saving signal;

the transceiver 1402 is configured to send the energy-saving signal to the terminal before sending the physical downlink control channel according to the sending period and/or the time domain position pattern of the energy-saving signal when the terminal needs to be instructed to detect the physical downlink control channel.

In fig. 14, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1401, and various circuits, represented by memory 1403, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1402 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 1401 is responsible for managing a bus architecture and general processing, and the memory 1403 may store data used by the processor 1401 in performing operations.

Preferably, a time domain interval between the energy-saving signal and the physical downlink control channel is greater than or equal to energy-saving signal processing time; wherein the energy-saving signal processing time is predefined by a protocol, or is configured at the base station side in advance, or is reported by the terminal.

Preferably, the transmission period of the power saving signal is the same as the transmission period of the synchronization signal Block SS/PBCH Block, and the power saving signal is located in a slot in which the SS/PBCH Block is located.

Preferably, the time domain position pattern of the power saving signal is predefined by a protocol or configured by the base station.

Preferably, the energy-saving signals correspond to SS/PBCH blocks one to one, and the SS/PBCH blocks and the energy-saving signals corresponding thereto are located in different symbols.

Preferably, the transmission period of the energy-saving signal is an integer multiple of at least one of the following times: the duration of half a radio frame; the transmission time of the SS/PBCH Block; a semi-static uplink and downlink switching period; a predefined time duration value.

Preferably, the time domain position of the energy saving signal further includes a time slot in which the SS/PBCH Block is located;

Referring to fig. 15, an embodiment of the present invention provides a terminal 150, including:

the processor 151 is configured to determine a target time domain position of the energy-saving signal according to energy-saving signal processing time, a sending period of the energy-saving signal, and a time domain position of a target physical downlink control channel to be detected;

a transceiver 152, configured to detect an energy saving signal in the target time domain position, detect the target physical downlink control channel when the energy saving signal is detected, and abandon detection of the target physical downlink control channel when the energy saving signal is not detected.

Preferably, the processor is further configured to determine a candidate transmission period of the energy-saving signal, where the candidate transmission period is a kth transmission period of the energy-saving signal before the target physical downlink control channel, and an initial value of k is 1; calculating a time domain interval of a first signal and the target physical downlink control channel at a time domain position, wherein the first signal is an energy-saving signal or a synchronous signal Block SS/PBCH Block positioned in the candidate sending period; if the time domain interval is not less than the energy-saving signal processing time, determining a target time domain position of the energy-saving signal according to the time domain position of the energy-saving signal in the candidate sending period; and if the time domain interval is smaller than the energy-saving signal processing time, adding 1 to the value of k, and returning to the step of determining the candidate sending period of the energy-saving signal.

Preferably, when the terminal is in an idle state, a time domain interval between the first signal and the target physical downlink control channel in a time domain position is:

a time domain interval between the last symbol of the SS/PBCH Block with the largest index number in the candidate sending period and the first symbol of the control resource set where the first search space is located; or,

a time domain interval between the last symbol of the SS/PBCH Block with the minimum index number in the candidate sending period and the first symbol of the control resource set where the first search space is located; or,

a time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block with the largest index number in the candidate sending period and the first symbol of the control resource set where the first search space is located; or,

a time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block with the smallest index number in the candidate sending period and the first symbol of the control resource set where the first search space is located;

Preferably, when the terminal is in a connected state, a time domain interval between the first signal and the target physical downlink control channel in a time domain position is:

a time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block with the largest index number in the candidate sending period and the first symbol of the control resource set where the target physical downlink control channel is located; or,

and the terminal selects a time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block selected in the random access stage or the synchronization process and the first symbol of the control resource set where the target physical downlink control channel is located.

Preferably, the transceiver is further configured to acquire, from the detected energy saving signal, indication information of a target timeslot where the target physical downlink control channel is located, where the indication information is a predetermined bit carried by the energy saving signal, a cyclic shift value adopted by the energy saving signal, an orthogonal cover code, or a sequence index; and determining the target time slot according to the indication information, and detecting the target physical downlink control channel on the target time slot.

Referring to fig. 16, another schematic structural diagram of a terminal according to an embodiment of the present invention is shown, where the terminal 1600 includes: a processor 1601, a transceiver 1602, a memory 1603, a user interface 1604, and a bus interface.

In this embodiment of the present invention, the terminal 1600 further includes: a computer program stored on the memory 1603 and operable on the processor 1601.

The processor 1601 is configured to read a program in the memory, and perform the following processes:

determining a target time domain position of an energy-saving signal according to the energy-saving signal processing time, the energy-saving signal sending period and the time domain position of a target physical downlink control channel to be detected;

the transceiver 1602 is configured to detect an energy saving signal in the target time domain position, detect the target physical downlink control channel when the energy saving signal is detected, and abandon detection of the target physical downlink control channel when the energy saving signal is not detected.

In FIG. 16, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, in particular, one or more processors represented by a processor 1601 and a memory represented by a memory 1603. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1604 may also be an interface capable of interfacing with a desired device externally for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1601 is responsible for managing the bus architecture and general processing, and the memory 1603 may store data used by the processor 1601 in performing operations.

Preferably, the processor is further configured to determine a candidate transmission period of the energy-saving signal, where the candidate transmission period is a kth transmission period of the energy-saving signal before the target physical downlink control channel, and an initial value of k is 1;

calculating a time domain interval of a first signal and the target physical downlink control channel at a time domain position, wherein the first signal is an energy-saving signal or a synchronous signal block SS/PBCBlock positioned in the candidate sending period;

if the time domain interval is not less than the energy-saving signal processing time, determining a target time domain position of the energy-saving signal according to the time domain position of the energy-saving signal in the candidate sending period;

and if the time domain interval is smaller than the energy-saving signal processing time, adding 1 to the value of k, and returning to the step of determining the candidate sending period of the energy-saving signal.

and the first search space is a Type2-PDCCH public search space corresponding to the SS/PBCH Block with the minimum index number in the candidate sending period.

Preferably, when the terminal is in a connected state, a time domain interval between the first signal and the target physical downlink control channel at a time domain position is:

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

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, 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.

The 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 position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.

In addition, functional units in the embodiments of the present invention 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 invention may be embodied in the form of a software product, which is stored in a storage medium and includes several 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 for indicating the spatial correlation information according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting energy-saving signals, which is applied to a base station, is characterized by comprising the following steps:

when a terminal needs to be instructed to detect a physical downlink control channel, according to a sending period and/or a time domain position pattern of the energy-saving signal, sending the energy-saving signal to the terminal before sending the physical downlink control channel;

wherein sending the power saving signal to the terminal comprises:

determining a target time domain position of an energy-saving signal, and sending the energy-saving signal at the target time domain position;

the step of determining the target time domain position of the energy-saving signal comprises:

determining a candidate transmission period of the energy-saving signal, where the candidate transmission period is a kth transmission period of the energy-saving signal before the physical downlink control channel, and an initial value of k is 1;

calculating a time domain interval of a first signal and the physical downlink control channel in a time domain position, wherein the first signal is an energy-saving signal or a synchronous signal Block SS/PBCH Block positioned in the candidate sending period;

2. The method of claim 1, wherein when the terminal is in an idle state, a time domain interval between the first signal and the physical downlink control channel at a time domain position is:

3. The method of claim 1, wherein when the terminal is in a connected state, a time domain interval between the first signal and the physical downlink control channel at a time domain position is:

a time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block with the largest index number in the candidate sending period and the first symbol of the control resource set where the physical downlink control channel is located; or,

and the terminal selects the time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block selected in the random access stage or the synchronization process and the first symbol of the control resource set where the physical downlink control channel is located.

4. The method of claim 1, wherein the power saving signal is abandoned to the terminal when the terminal is not required to be instructed to detect a physical downlink control channel.

5. The method of claim 1, wherein a time-domain interval between the power-saving signal and the physical downlink control channel is greater than or equal to a power-saving signal processing time;

wherein the energy-saving signal processing time is predefined by a protocol, or is configured at the base station side in advance, or is reported by the terminal.

6. The method of claim 1,

the sending period of the energy-saving signal is the same as the sending period of the synchronizing signal Block SS/PBCH Block, and the energy-saving signal is positioned in the time slot of the SS/PBCH Block.

7. The method of claim 6, wherein the time domain location pattern of the power saving signal is protocol predefined or configured by the base station.

8. The method of claim 6, wherein the power saving signals correspond to SS/PBCH Block in a one-to-one manner, and wherein the SS/PBCH Block and its corresponding power saving signals are located in different symbols.

9. The method of claim 1,

the sending period of the energy-saving signal is different from the sending period of a synchronous signal Block SS/PBCH Block, the time domain position of the energy-saving signal comprises a time slot in which a non-SS/PBCH Block is located, and the time slot in which the non-SS/PBCH Block is located is a time slot not containing the SS/PBCH Block.

10. The method of claim 9,

the transmission period of the energy-saving signal is integral multiple of at least one of the following times: the duration of half a radio frame; the transmission time of the SS/PBCH Block; a semi-static uplink and downlink switching period; a predefined time duration value.

11. The method of claim 9, further comprising:

and the base station indicates the sending period of the energy-saving signal to the terminal through high-level signaling or DCI.

12. The method of claim 9,

the energy-saving signal comprises at least one time domain position pattern, and the at least one time domain position pattern is predefined by a protocol or configured to the terminal by a base station.

13. The method of claim 9,

the time domain position of the energy-saving signal also comprises a time slot in which the SS/PBCH Block is positioned;

14. A method for receiving a power saving signal is applied to a terminal, and is characterized by comprising the following steps:

the terminal detects an energy-saving signal at the target time domain position, detects the target physical downlink control channel when the energy-saving signal is detected, and abandons the detection of the target physical downlink control channel when the energy-saving signal is not detected;

wherein the step of determining the target time domain position of the energy-saving signal comprises:

determining a candidate transmission period of the energy-saving signal, where the candidate transmission period is a kth transmission period of the energy-saving signal before the target physical downlink control channel, and an initial value of k is 1;

calculating a time domain interval of a first signal and the target physical downlink control channel at a time domain position, wherein the first signal is an energy-saving signal or a synchronous signal Block SS/PBCH Block positioned in the candidate sending period;

15. The method of claim 14, wherein when the terminal is in an idle state, a time domain interval between the first signal and the target physical downlink control channel at a time domain position is:

16. The method according to claim 14, wherein when the terminal is in a connected state, the time domain separation between the first signal and the target physical downlink control channel in the time domain position is:

and the terminal selects the time domain interval between the last symbol of the energy-saving signal corresponding to the SS/PBCH Block selected in the random access stage or the synchronization process and the first symbol of the control resource set where the target physical downlink control channel is located.

17. The method according to claim 14, wherein the step of detecting the target physical downlink control channel when the power saving signal is detected comprises:

acquiring indication information of a target time slot in which a target physical downlink control channel is located from a detected energy-saving signal, wherein the indication information is a predetermined bit carried by the energy-saving signal, a cyclic shift value adopted by the energy-saving signal, an orthogonal cover code or a sequence index;

and determining the target time slot according to the indication information, and detecting the target physical downlink control channel on the target time slot.

18. A base station, comprising:

a transceiver, configured to send the energy-saving signal to a terminal before sending a physical downlink control channel according to a sending period and/or a time-domain position pattern of the energy-saving signal when the terminal needs to be instructed to detect the physical downlink control channel;

the processor is further configured to determine a target time domain position of the energy-saving signal;

the transceiver is further configured to transmit the energy-saving signal at the target time domain position;

the processor is further configured to perform the following steps to determine a target time domain location of the power saving signal:

calculating a time domain interval of a first signal and the physical downlink control channel at a time domain position, wherein the first signal is an energy-saving signal or a synchronous signal Block SS/PBCH Block positioned in the candidate sending period;

19. The base station of claim 18,

when the terminal is in an idle state, a time domain interval between the first signal and the physical downlink control channel at a time domain position is as follows:

20. The base station of claim 18,

when the terminal is in a connected state, a time domain interval between the first signal and the physical downlink control channel at a time domain position is as follows:

21. The base station of claim 18,

and the sending period of the energy-saving signal is the same as that of the synchronizing signal Block SS/PBCH Block, and the energy-saving signal is positioned in the time slot of the SS/PBCH Block.

22. The base station of claim 18,

the sending period of the energy-saving signal is different from the sending period of a synchronous signal Block SS/PBCH Block, the time domain position of the energy-saving signal comprises a time slot where a non-SS/PBCH Block is located, and the time slot where the non-SS/PBCH Block is located is a time slot which does not contain the SS/PBCH Block.

23. A terminal, comprising:

a transceiver, configured to detect an energy saving signal in the target time domain position, detect the target physical downlink control channel when the energy saving signal is detected, and abandon detection of the target physical downlink control channel when the energy saving signal is not detected;

the processor is further configured to determine a candidate transmission period of the energy-saving signal, where the candidate transmission period is a kth transmission period of the energy-saving signal before the target physical downlink control channel, and an initial value of k is 1; calculating a time domain interval of a first signal and the target physical downlink control channel at a time domain position, wherein the first signal is an energy-saving signal or a synchronous signal Block SS/PBCH Block positioned in the candidate sending period; if the time domain interval is not less than the energy-saving signal processing time, determining a target time domain position of the energy-saving signal according to the time domain position of the energy-saving signal in the candidate sending period; and if the time domain interval is smaller than the energy-saving signal processing time, adding 1 to the value of k, and returning to the step of determining the candidate sending period of the energy-saving signal.

24. The terminal of claim 23,

the transceiver is further configured to acquire, from the detected energy saving signal, indication information of a target timeslot where a target physical downlink control channel is located, where the indication information is a predetermined bit carried by the energy saving signal, a cyclic shift value adopted by the energy saving signal, an orthogonal cover code, or a sequence index; and determining the target time slot according to the indication information, and detecting the target physical downlink control channel on the target time slot.

25. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor, carries out the steps of the method according to any one of claims 1 to 17.

26. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 17.