CN111865486B

CN111865486B - Physical Downlink Control Channel (PDCCH) detection method and equipment

Info

Publication number: CN111865486B
Application number: CN201910365433.XA
Authority: CN
Inventors: 王加庆; 王磊
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2022-04-05
Anticipated expiration: 2039-04-30
Also published as: CN111865486A; WO2020220866A1

Abstract

The embodiment of the invention discloses a method and equipment for detecting a Physical Downlink Control Channel (PDCCH), which relate to the technical field of wireless communication and are used for reducing the blind detection complexity of the PDCCH and reducing the power consumption of a terminal. The method comprises the following steps: configuring PDCCH detection information of one or more cells and scaling information of the PDCCH detection information for a terminal through high-level signaling; and sending an energy-saving signal to the terminal, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying scaling information of PDCCH detection information used for processing the PDCCH detection information of the cell when the terminal carries out PDCCH detection on a channel of each activated cell.

Description

Physical Downlink Control Channel (PDCCH) detection method and equipment

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for detecting a physical downlink control channel PDCCH.

Background

In a 5G NR system, the operating states of a terminal are divided into three types, where the RRC idle state, the RRC inactive state, and the RRC connected state are in a radio resource control layer, when the terminal is in the RRC idle state and the RRC inactive state, a paging signal needs to be monitored, when the terminal receives the paging signal, it indicates that there is data to be transmitted on a network side, the terminal needs to enter the RRC connected state to receive downlink data, and the terminal needs to continuously monitor a PDCCH to acquire information transmitted by a downlink shared channel PDSCH, but packet-based data streams are usually bursty and have data transmission only in a period of time, and continuous monitoring of the PDCCH can cause rapid power consumption of the terminal.

The DRX mechanism designed by 3GPP plays a role of saving power, as shown in fig. 1, the terminal monitors PDCCH only in "On duration" period, and during "Opportunity for DRX", i.e. DRX off time, the terminal does not receive PDCCH to reduce power consumption, i.e. enters sleep mode.

Currently, the gbb configures PDCCH control resource set, CORESET, through high-level signaling, and configures relevant parameters of search space SS through search space IE, according to NR protocol, each terminal performs blind detection in SS at a corresponding location of a bandwidth portion BWP, where a BWP has at most 3 CORESET and 10 SSs, and an SS can only be in one CORESET, and a CORESET can configure multiple SSs, where SSs occur periodically, and a terminal performs blind detection in each SS at a corresponding location.

Due to different subcarrier intervals, the maximum blind detection times in a time slot are different, for example, when the subcarrier interval is 15kHz, the maximum blind detection times in a time slot of a terminal is 44. Particularly, a terminal in an RRC connected state needs to perform blind detection on aggregation levels AL and the number of PDCCH candidate sets configured by a base station in all search space monitoring periods configured by the base station within a discontinuous cycle duration, and an NR standard specifies that a maximum of 2, 4, 8, and 16 els are configured for each SS, each AL may include a maximum of 8 PDCCH candidate sets, and when performing blind detection on the PDCCH, demodulation needs to be performed according to a demodulation reference signal in an element group REG occupied by the current candidates, a length of a demodulation reference signal sequence is determined by an AL of the candidates, a complexity of the PDCCH blind detection depends on the AL of the candidates and position information of the candidates, and an LTE power consumption statistical result indicates that up to 70% of power consumption of terminal baseband processing is consumed in the PDCCH detection process.

Disclosure of Invention

The invention provides a Physical Downlink Control Channel (PDCCH) detection method and equipment, which are used for reducing the complexity of blind detection of a PDCCH and reducing the power consumption of a terminal.

In a first aspect, a method for detecting a physical downlink control channel PDCCH provided in an embodiment of the present invention includes:

configuring PDCCH detection information of one or more cells and scaling information of the PDCCH detection information for a terminal through high-level signaling;

and sending an energy-saving signal to the terminal, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying the scaling information of the PDCCH detection information used for processing the PDCCH detection information of the cell when the terminal carries out PDCCH detection on the channel of each activated cell.

In the method, network equipment configures PDCCH detection information of one or more cells and scaling information of the PDCCH detection information for a terminal through a high-level signaling, and sends an energy-saving signal to the terminal, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying the scaling information of the PDCCH detection information used for processing the PDCCH detection information of the cell when the terminal performs PDCCH detection on a channel of each activated cell, so that the terminal can scale the configured PDCCH detection information based on the configured PDCCH detection information and the indication information included in the energy-saving signal, and perform PDCCH detection based on the scaled PDCCH detection information.

In one possible implementation, the PDCCH detection information includes one or more of the following information: control resource set CORESET information, search space SS information, aggregation level AL information, candidate set candidate information.

In a possible implementation manner, when the PDCCH detection information includes SS information, all search spaces configure scaling information of one common PDCCH detection information, or each search space configures scaling information of independent PDCCH detection information.

In one possible implementation, the scaling information of the PDCCH detection information includes one or more of the following information: scaling information of the number of candidate sets, scaling information of aggregation levels, scaling information of search space detection opportunities, subset information of candidate sets in PDCCH detection information, subset information of aggregation levels in PDCCH detection information, and search space detection opportunity subset information.

In a possible implementation manner, when the terminal is configured with the scaling information of the PDCCH detection information of multiple cells through a high-level signaling, all the cells are configured with one common scaling information of the PDCCH detection information, or multiple cells are configured with scaling information of at least two PDCCH detection information.

In a second aspect, a method for detecting a physical downlink control channel PDCCH provided in an embodiment of the present invention includes:

receiving PDCCH detection information of one or more cells and scaling information of the PDCCH detection information, which are configured by network equipment through high-level signaling;

receiving an energy-saving signal sent by network equipment, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying scaling information of PDCCH detection information used for processing the PDCCH detection information of a cell when a terminal carries out PDCCH detection on a channel of each activated cell;

and performing PDCCH detection on a channel of at least one activated cell based on the configured PDCCH detection information and the indication information.

In the method, the terminal receives the PDCCH detection information and the scaling information of the PDCCH detection information of one or more cells configured for the terminal by the network equipment through high-level signaling, and receives the energy-saving signal sent by the network equipment, one field of the energy-saving signal comprises indication information, the indication information is used for appointing the terminal to carry out PDCCH detection on the channel of each active cell, scaling information of PDCCH detection information used for processing PDCCH detection information of a cell, the terminal can determine whether the PDCCH detection information of the cell is included in the power saving signal based on the configured PDCCH detection information and indication information included in the power saving signal, performing scaling processing on the configured PDCCH detection information, performing PDCCH detection based on the PDCCH detection information after scaling processing, compared with the prior art in which the terminal performs PDCCH detection based on PDCCH detection information, and the configured PDCCH detection information is subjected to scaling processing, so that the blind detection complexity of the PDCCH can be reduced, and the power consumption of the terminal can be reduced.

In a possible implementation manner, when the network device configures scaling information of PDCCH detection information of multiple cells for the terminal through a high-level signaling, all the cells configure scaling information of one common PDCCH detection information, or multiple cells configure scaling information of at least two PDCCH detection information.

In a third aspect, a device for detecting a physical downlink control channel PDCCH according to an embodiment of the present invention includes: a processor and a memory;

the processor is used for reading the program in the memory and executing the following processes:

In a fourth aspect, a device for detecting a physical downlink control channel PDCCH according to an embodiment of the present invention includes: a processor and a memory;

In a fifth aspect, an embodiment of the present invention further provides a device for detecting a physical downlink control channel PDCCH, where the device includes a processing module and a sending module,

the processing module is used for configuring PDCCH detection information of one or more cells and the scaling information of the PDCCH detection information for the terminal through high-level signaling;

and the sending module is used for sending an energy-saving signal to the terminal, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying the scaling information of the PDCCH detection information used for processing the PDCCH detection information of the cell when the terminal carries out the PDCCH detection on the channel of each activated cell.

In a sixth aspect, an embodiment of the present invention further provides a device for detecting a physical downlink control channel PDCCH, where the device includes a first receiving module, a second receiving module, and a processing module,

a first receiving module, configured to receive PDCCH detection information and scaling information of PDCCH detection information of one or more cells configured by a network device through a high-level signaling;

a second receiving module, configured to receive an energy-saving signal sent by a network device, where a field of the energy-saving signal includes indication information, and the indication information is used to specify scaling information of PDCCH detection information used by a terminal to process PDCCH detection information of a cell when performing PDCCH detection on a channel of each activated cell;

and the processing module is used for carrying out PDCCH detection on at least one activated channel based on the configured PDCCH detection information and the indication information.

In a seventh aspect, the present application also provides a computer storage medium having a computer program stored thereon, which when executed by a processing unit, performs the steps of the method of the first or second aspect.

In addition, for technical effects brought by any one implementation manner of the third aspect to the sixth aspect, reference may be made to technical effects brought by different implementation manners of the first aspect, and details are not described here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of a discontinuous reception DRX mechanism in the prior art;

fig. 2 is a schematic flowchart of a PDCCH detection method on a network side according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of a PDCCH detection method at a terminal side according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a PDCCH detection method and apparatus at a network side according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a device for a PDCCH detection method at a terminal side according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a PDCCH detection method and apparatus at a network side according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a device for detecting a PDCCH at a terminal side according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the 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 invention.

Some of the words that appear in the text are explained below:

1. the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

2. The term "terminal" in the embodiments of the present invention may include a mobile phone, a computer, a tablet, and the like.

The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.

In the 5G NR system, the operating states of the terminal are divided into three types, where a Radio Resource Control (RRC) idle state, an RRC inactive state, and an RRC connected state are provided, the terminal needs to monitor a paging signal when in the RRC idle state and the inactive state, and when receiving the paging signal, the terminal indicates that there is data transmission on the network side, and the terminal needs to enter the RRC connected state to receive Downlink data, and the terminal needs to continuously monitor a Downlink Control Channel (PDCCH) in order to obtain information transmitted by a Downlink Shared Channel (PDSCH), but a packet-based data stream is usually bursty, and there is data transmission only for a period of time, and continuously monitoring the PDCCH may cause fast power consumption of the terminal.

A Discontinuous Reception (DRX) mechanism designed by 3GPP plays a role of saving power, as shown in fig. 1, a terminal monitors a PDCCH only in an "On duration" period, and the terminal does not receive the PDCCH during an "Opportunity for DRX", that is, a "DRX off" time, to reduce power consumption, that is, to enter a sleep mode.

Currently, a base station (gNB) configures a PDCCH Control Resource Set (core) for transmission through high-layer signaling, configures related parameters of a Search Space (SS) through a Search space IE, and according to an NR protocol, each terminal performs blind detection in SSs at corresponding positions of a bandwidth Part (BWP), where there are at most 3 core sets and 10 SSs on one BWP, and one SS can only be in one core Set, and one core Set can configure multiple SSs, where SSs occur periodically, and a terminal performs blind detection in each SS at corresponding positions. Due to different subcarrier intervals, the maximum blind detection times in one time slot are different, for example, when the subcarrier interval is 15kHz, the maximum blind detection times of a terminal in one time slot is 44. Particularly, a terminal in an RRC connection state needs to perform blind detection on Aggregation Levels (ALs) configured by a base station and the number of PDCCH candidate candidates in all search space monitoring periods configured by the base station within a discontinuous cycle duration, the NR standard specifies that 2, 4, 8, and 16 ALs are configured at most for each SS, each AL may include at most 8 PDCCH candidates, and when performing blind detection on the PDCCH, demodulation needs to be performed according to demodulation reference signals in a Resource Element Group (REG) occupied by the current candidates, a length of a demodulation reference signal sequence is determined by the AL of the candidates, a PDCCH blind detection complexity depends on the AL of the candidates and location information of the candidates, and an LTE power consumption statistical result indicates that up to 70% of terminal baseband processing power consumption is consumed in a detection process.

Therefore, the embodiment of the invention provides a method and a device for detecting a Physical Downlink Control Channel (PDCCH), which are used for reducing the complexity of blind detection of the PDCCH and reducing the power consumption of a terminal.

In the method for detecting a Physical Downlink Control Channel (PDCCH) provided by the embodiment of the invention, network equipment configures PDCCH detection information of one or more cells and scaling information of the PDCCH detection information for a terminal through a high-level signaling, and sends an energy-saving signal to the terminal, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying the scaling information of the PDCCH detection information used for processing the PDCCH detection information of the cell when the terminal performs PDCCH detection on each activated cell channel, so that the terminal can scale the configured PDCCH detection information based on the configured PDCCH detection information and the indication information included in the energy-saving signal, and perform PDCCH detection based on the scaled PDCCH detection information, thereby reducing the blind detection complexity of the PDCCH and reducing the power consumption of the terminal.

The PDCCH detection information may include one or more of control resource set CORESET information, search space SS information, aggregation level AL information, candidate set candidate information.

The scaling information of the PDCCH detection information may include one or more of scaling information of the number of candidate sets, scaling information of the aggregation level, and scaling information of the search space detection opportunity.

The scaling information of the PDCCH detection information may also include one or more of subset information of a candidate set in the PDCCH detection information, subset information of an aggregation level in the PDCCH detection information, and search space detection opportunity subset information.

When the PDCCH detection information includes SS information, all search spaces may be configured with scaling information of one common PDCCH detection information, or each search space may be configured with scaling information of independent PDCCH detection information.

When the network device configures the scaling information of the PDCCH detection information of multiple cells for the terminal through the high-level signaling, all the cells may configure the scaling information of one common PDCCH detection information, or multiple cells may configure the scaling information of at least two PDCCH detection information.

It should be noted that the higher layer signaling may include, but is not limited to, RRC signaling.

The PDCCH detection method according to the embodiment of the present invention is described in detail with reference to the specific embodiment.

Example 1

The embodiment of the invention performs scaling aiming at the search space detection opportunity, and uses a field indication in the energy-saving signal to only contain the scaling information of the search space detection opportunity. The scaling information of the search space detection opportunity refers to that only a subset of the original detection opportunities is reserved in the detection opportunities of the original search space, for example, the original detection opportunity is every Ks slots, for example, when the scaling of the search space detection opportunity is equal to 0.5, the terminal detects the PDCCH once every 2Ks slots, and table 1 shows the scaling information of the search space detection opportunity.

TABLE 1

As shown in table 1, a field of the power saving signal is 1bit, when the field is 0, scaling information indicating a search space detection opportunity is 1, and when the field is 1, scaling information indicating a search space detection opportunity is 0.5.

Of course, it should be noted that the scaling information of the search space detection opportunity may be scaling information or search space detection opportunity subset information.

Example 2

According to the embodiment of the invention, the AL in the PDCCH detection information and the scaling information of PDCCH candidates are configured through high-level signaling, and the scaling information of candidates and AL is indicated by using a field in the energy-saving signal, so that the flexibility of network equipment is increased, and a larger energy-saving gain is obtained for the terminal. As shown in table 2, the scaling information is included in the AL and PDCCH candidates joint indicator information.

TABLE 2

As shown in table 2, a field length of the power saving signal is 2 bits, and when the field length is 00, scaling information indicating scales and AL is 1, and when the field length is 10, the scaling information indicates that the search space SS is occupied₁The scaling information of middle candidates is 0.3, and the scaling information of AL is 0.25.

Example 3

When the network equipment configures the PDCCH detection information through a high-level signaling, only configuring the information of the current cell where the active terminal is located, and performing scaling processing on the CORESET information, the search space SS information, the aggregation level AL information and the candidate set candidate information of the current cell based on the scaling information of the current cell configured by the network equipment, configuring the scaling information, and indicating through one field of the energy-saving signal.

In this embodiment, for the PDCCH detection information indicated by one field of the energy-saving signal in the PDCCH detection method for the physical downlink control channel, which is the scaling information of PDCCH detection information with the number of candidates, the method for indicating the candidate scaling information on the primary cell (Pcell) where the terminal is located is as follows.

The network device configures a candidate number of scaling information for each SS, and this parameter may be the same or different, and preferably, the parameter is not completely the same. Taking the length of one field of the power saving signal as 2 bits as an example, the following table 3 is provided.

TABLE 3

The scaling values of the numbers of candidates in the embodiment of the present invention correspond to the terminal search spaces configured for the terminal by the network device one to one, and since the numbers of candidates contained in the search spaces configured for the terminal by the network device through the high-level signaling are different, the scaling values corresponding to each search space may be equal or unequal.

As shown in table 3, the scaling values of each row corresponding to the same SS are different, and different scaling factors are used to flexibly schedule the network device, or a relatively large scaling factor may be configured for a search space containing a small number of candidates, or a relatively small scaling factor may be configured for a search space containing a large number of candidates.

In the above table, the number of bits and their specific scaling values are only an example, and the specific values are due to the network device configuration. It should be noted that when the scaling factor is equal to 0, it indicates that the deactivation operation is performed on the search space, and when the scaling factor is equal to 1, it indicates that the search space is not scaled.

When scaling processing is performed by using the candidates scaling information in the PDCCH detection information, a subset of the candidates is obtained by using a function of the PDCCH candidates number configured for the terminal by the network device and the scaling factor, and the function can be implemented by a simple method.

For example, assuming that the network device configures T PDCCH candidates for the aggregation level L of a certain SS, the network device multiplies the scaling factor α by T and performs rounding operation for each aggregation level, so as to obtain the number N of PDCCH candidates in the aggregation level as int (T × α).

After obtaining the numbers of candidates, obtaining the corresponding sets of candidates according to the pre-agreed mapping relationship, wherein N candidates can be selected according to the order of candidate index from small to large, and a better expression manner is that the scaling mapping relationship of the numbers of candidates can be different under different search spaces.

For example, assuming that the search space index of the base station configuration is [1, 2, 3, 4], the index of candidates is [0, 1, 3, 4, 6, 7], and assuming that the candidates scaling factor α is 0.5, the candidates set {1, 2} is associated with the 1 st and 3 th search spaces, and the candidates set {3, 4} is associated with the 2 nd and 4 th search spaces.

When the network equipment configures the PDCCH detection information, besides the information of the current cell where the activation terminal is located, the information of a plurality of auxiliary cells is also configured and activated, and based on the network equipment configuring the scaling information of the current cell and the scaling information of one or more auxiliary cells, the CORESET information, the search space information, the PDCCH candidate set number, the aggregation level and the search space detection opportunity information of the current cell and the CORESET information, the search space information, the PDCCH candidate set number, the aggregation level and the search space detection opportunity information of the corresponding auxiliary cell are scaled.

Example 4

When a plurality of Secondary cells (scells) are activated in addition to the activation of the Pcell, the control channel detection related field carried by the energy saving signal sent on the Pcell needs to indicate all activated carriers, for example, the energy saving signal on the Pcell only includes one control channel detection related field, and if K bits are included, the activated Scell carriers all indicate the scaling information of the PDCCH detection information by using the K bits.

In the embodiment of the present invention, scaling information indicating the number of candidate cells of a multi-carrier is specifically described when a network device uses the same field on a Pcell to indicate scaling information of multiple activated cells, and especially when multiple carriers all use a set of scaling parameters configured by the network device, that is, when the Pcell is activated and multiple secondary cells are also activated.

The network device may configure one PDCCH candidate number scaling parameter set as shown in table 1 for each carrier, and assume that there are two scells in addition to the Pcell, Scell1 and Scell2 are activated, the network device configures the Scell1 scaling parameters as shown in table 4, and the Scell2 scaling parameters as shown in table 5. Of course, the base station may also use the same scaling information configuration for multiple active cells, such as using a set of parameters, for example, using the configuration in table 3.

TABLE 4

TABLE 5

Preferably, the network device indicates scaling information of multiple active cells by using the same field on the Pcell, and particularly, multiple carriers all use a set of scaling parameters in common, where the parameters only include scaling information of PDCCH durations, and if the aggregation level scaling is not accurate, or a requirement that multiple carriers all indicate accurately is met, a specific example of this case is that the network device indicates AL ═ 2, 4, but actually, AL ═ 8 or more may be matched with the channel shape, and scaling AL at this time may affect the system performance, and if only the number of candidates is scaled, this situation may be effectively avoided.

Example 5

In the embodiment of the present invention, the network device may configure the same scaling information for multiple active cell cells, and all the cells use a set of parameters, for example, the parameters shown in table 2 are all used, it should be noted that when the scaling information of all the ALs is configured as 1, it is actually equivalent to scaling only the PDCCH candidate number.

Example 6

In the embodiment of the present invention, a network device configures scaling information of PDCCH detection information for multiple cells, for example, assuming that there are two scells in addition to Pcell, Scell1 and Scell2 are activated, the network device configures scaling parameters as shown in table 6, each Scell is configured with one set of scaling information, or multiple scells are configured with one set of scaling information, for simplicity, the scaling information may not be bound to a search space, and all search spaces use the same indication method similar to that shown in table 5.

TABLE 6

Example 7

The network equipment of the embodiment of the invention utilizes one field of the energy-saving signal to indicate the configuration information of PDCCH detection information, such as SS, AL or candidates number of an activated Scell or a group of activated Scell. One field of the power saving signal may correspond to a separate set of scaling information or a common set of scaling information.

It should be noted that the PDCCH detection information includes one or more combinations of the numbers of CORESET, SS, AL and candidates, in all embodiments of the present invention, scaling processing is performed on one or more combinations of the numbers of SS, AL and candidates, and the reason why scaling processing is not performed on CORESET is that some important other information, such as beam information, is configured in CORESET.

The network equipment configures PDCCH information to contain a plurality of search spaces, in the process of configuring PDCCH detection information scaling information, the used scaling information configured by the network equipment is the same for the PDCCH detection information in each search space, the PDCCH detection information in each search space is scaled based on the same scaling information configured by the network equipment, and the scaled PDCCH detection information is indicated by one field of an energy-saving signal.

Example 8

The embodiment of the present invention performs scaling processing on PDCCH detection information AL, that is, a field in the energy saving signal is used to indicate a search space and perform joint indication with AL, for example, scaling AL may be performed by the following method:

assuming that AL configured for the terminal by the network device is {1, 2, 4, 8}, and the scaling factor is 0.5, the scaled subset of AL is AL {1, 2} or {4, 8} or {1, 4} or {4, 8}, and is shown in table 7 as the scaling information of AL.

TABLE 7

As shown in table 7, one field of the power saving signal is 1bit, and when the field is 0, it indicates the SS₁The scaling information of the search space AL is 1, which means SS₂The scaling information of the search space AL is 1, which means SS_MThe scaling information of the search space AL is 1, and when the field is 1, it indicates SS₁The scaling information for search space AL is 0.5, indicating SS₂The scaling information for search space AL is 0.5, indicating SS_MThe scaling information of the search space AL is 0.5.

Example 9

The embodiment of the invention aims at the condition that the PDCCH detection information in a field indication of an energy-saving signal in the PDCCH detection method comprises SS information, and the configuration of each search space in the search spaces by network equipment is the same, as shown in Table 8.

TABLE 8

The method comprises the steps that the network equipment configuration PDCCH information comprises a plurality of search spaces, in the process of scaling the PDCCH detection information needing to be configured, the scaling information configured by the network equipment in each search space is different, the PDCCH detection information in the search space is scaled based on the scaling information configured by the network equipment corresponding to each search space, and indication is carried out in one field of an energy-saving signal.

Example 10

The embodiment of the invention aims at the condition that the PDCCH detection information in a field indication of an energy-saving signal in the PDCCH detection method comprises SS information, and the PDCCH detection information is configured with a public scaling information of the PDCCH detection information, for example, the PDCCH detection information also comprises the candates number and the aggregation level AL information, and the scaling method of the candates number and the aggregation level AL set comprises the following steps:

the network device configures all SSs with scaling information about PDCCH candidate aggregation levels AL, which may or may not be the same parameter, and preferably, the parameter is not identical. Taking the scaling information of PDCCH detection as 2 bits as an example, the following table 9:

TABLE 9

As shown in Table 9, a field of the power saving signal is 2 bits, and when the field is not 01, the SS is₁Scaling information for the number of candidates and aggregation level AL in space are both 0.5, SS₂The scaling information for the numbers of candidates and the aggregation level AL in the space are both 0, SS_MThe scaling information for the number of candidates in the space and the aggregation level AL are both 0.5.

The same field on the power saving signal may also indicate one or more of the number of candidate sets, the aggregation level, and the search space detection opportunity in the scaling information of the PDCCH detection information, and the scaling information is the same.

Example 11

In the embodiment of the present invention, the PDCCH detection information in each search space is not scaled, and one field of the energy saving signal directly indicates the PDCCH detection information, such as one or more of CORESET information, SS information, aggregation level AL information, and candidate information, taking the case of configuring the PDCCH detection information with a higher layer signaling only with an aggregation level AL as an example, as follows:

assuming that the set of AL configured for the terminal by the network device is AL ═ 1, 2, 4, 8, a field of the power saving signal indicates PDCCH detection information as a subset of AL, i.e., AL ═ 1, or {8}, or {4, 8}, or {1, 4}, or {4, 8} or {1, 4, 8}, etc.

As shown in fig. 2, on the network side, the method for detecting a physical downlink control channel PDCCH according to the embodiment of the present invention specifically includes the following steps:

step 201, configuring PDCCH detection information of one or more cells and scaling information of PDCCH detection information for a terminal through a high-level signaling.

Step 202, sending an energy-saving signal to the terminal, where a field of the energy-saving signal includes indication information, and the indication information is used to specify scaling information of PDCCH detection information used for processing PDCCH detection information of a cell when the terminal performs PDCCH detection on a channel of each activated cell.

Optionally, the PDCCH detection information includes one or more of the following information: control resource set CORESET information, search space SS information, aggregation level AL information, candidate set candidate information.

Optionally, when the PDCCH detection information includes SS information, all search spaces configure scaling information of one common PDCCH detection information, or each search space configures scaling information of independent PDCCH detection information.

It should be noted that, when each search space is configured with scaling information of independent PDCCH detection information, the scaling information of PDCCH detection information configured in two or more search spaces may be scaling information of the same PDCCH detection information, which is not limited in the embodiment of the present invention.

Optionally, the scaling information of the PDCCH detection information includes one or more of the following information: scaling information of the number of candidate sets, scaling information of aggregation levels, scaling information of search space detection opportunities, subset information of candidate sets in PDCCH detection information, subset information of aggregation levels in PDCCH detection information, and search space detection opportunity subset information.

Optionally, when the terminal is configured with the scaling information of the PDCCH detection information of multiple cells through a high-level signaling, all the cells are configured with the scaling information of one common PDCCH detection information, or multiple cells are configured with the scaling information of at least two PDCCH detection information.

As shown in fig. 3, at a terminal side, a method for detecting a physical downlink control channel PDCCH according to an embodiment of the present invention includes the following steps:

step 301, receiving PDCCH detection information and scaling information of PDCCH detection information of one or more cells configured by the network device through the high-level signaling.

Step 302, receiving an energy saving signal sent by the network device, where a field of the energy saving signal includes indication information, and the indication information is used to specify scaling information of PDCCH detection information used for processing PDCCH detection information of a cell when the terminal performs PDCCH detection on a channel of each activated cell.

Step 303, performing PDCCH detection on at least one channel of the active cell based on the configured PDCCH detection information and the indication information.

Optionally, when the network device configures scaling information of PDCCH detection information of multiple cells for the terminal through a high-level signaling, all the cells configure scaling information of one common PDCCH detection information, or multiple cells configure scaling information of at least two PDCCH detection information.

As shown in fig. 4, on the network side, a physical downlink control channel PDCCH detection apparatus provided in an embodiment of the present invention includes: a processor 400, a memory 401, and a transceiver 402.

The processor 400 is responsible for managing the bus architecture and general processing, and the memory 401 may store data used by the processor 400 in performing operations. The transceiver 402 is used to receive and transmit data under the control of the processor 400.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 400, and various circuits, represented by memory 401, being 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 processor 400 is responsible for managing the bus architecture and general processing, and the memory 401 may store data used by the processor 400 in performing operations.

The processes disclosed in the embodiments of the present invention may be applied to the processor 400, or implemented by the processor 400. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 400. The processor 400 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 401, and the processor 400 reads the information in the memory 401 and completes the steps of the signal processing flow in combination with the hardware thereof.

The processor 400 is configured to read a program in the memory 401 and execute the following processes:

As shown in fig. 5, at a terminal side, a device for detecting a physical downlink control channel PDCCH according to an embodiment of the present invention includes: a processor 500, a memory 501, and a transceiver 502.

The processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 in performing operations. The transceiver 502 is used to receive and transmit data under the control of the processor 500.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 500 and various circuits of memory represented by memory 501 being 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 processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 may store data used by the processor 500 in performing operations.

The processes disclosed in the embodiments of the present invention may be applied to the processor 500, or implemented by the processor 500. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 500. The processor 500 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 501, and the processor 500 reads the information in the memory 501, and completes the steps of the signal processing flow in combination with the hardware thereof.

The processor 500 is configured to read a program in the memory 501 and execute the following processes:

As shown in fig. 6, on the network side, an embodiment of the present invention further provides a device for detecting a physical downlink control channel PDCCH, where the device includes a processing module 601 and a sending module 602, where,

a processing module 601, configured to configure PDCCH detection information of one or more cells and scaling information of the PDCCH detection information for a terminal through a high-level signaling;

a sending module 602, configured to send an energy-saving signal to a terminal, where one field of the energy-saving signal includes indication information, and the indication information is used to specify scaling information of PDCCH detection information used for processing PDCCH detection information of a cell when the terminal performs PDCCH detection on a channel of each activated cell.

As shown in fig. 7, an embodiment of the present invention further provides a physical downlink control channel PDCCH detection apparatus, which includes a first receiving module 701, a second receiving module 702, and a processing module 703, wherein,

a first receiving module 701, configured to receive PDCCH detection information and scaling information of PDCCH detection information of one or more cells configured by a network device through a high-level signaling;

a second receiving module 702, configured to receive an energy-saving signal sent by a network device, where a field of the energy-saving signal includes indication information, and the indication information is used to specify scaling information of PDCCH detection information used by a terminal to process PDCCH detection information of a cell when performing PDCCH detection on a channel of each activated cell;

a processing module 703 is configured to perform PDCCH detection on at least one channel of the active cell based on the configured PDCCH detection information and the indication information.

An embodiment of the present invention further provides a computer-readable non-volatile storage medium, which includes a program code, and when the program code runs on a computing terminal, the program code is configured to enable the computing terminal to execute the steps of the method for detecting a physical downlink control channel PDCCH according to the embodiment of the present invention.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for detecting a Physical Downlink Control Channel (PDCCH), the method comprising:

configuring PDCCH detection information of at least one cell and scaling information of the PDCCH detection information for a terminal through a high-level signaling; wherein the PDCCH detection information comprises one or more of the following information: controlling resource set CORESET information, search space SS information, aggregation level AL information and candidate set candidate information; when the PDCCH detection information comprises SS information, all the search spaces are configured with scaling information of a common PDCCH detection information;

when scaling information of PDCCH detection information of a plurality of cells is configured for a terminal through a high-level signaling, all the cells in the plurality of cells are configured with scaling information of a common PDCCH detection information, or the plurality of cells are configured with scaling information of at least two pieces of PDCCH detection information;

and sending an energy-saving signal to the terminal, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying scaling information of PDCCH detection information used for processing the PDCCH detection information of the cell when the terminal carries out PDCCH detection on a channel of each activated cell.

2. The method of claim 1, wherein the scaling information of the PDCCH detection information comprises one or more of the following information: scaling information of the number of candidate sets, scaling information of aggregation levels, scaling information of search space detection opportunities, subset information of candidate sets in the PDCCH detection information, subset information of aggregation levels in the PDCCH detection information, and search space detection opportunity subset information.

3. A method for detecting a Physical Downlink Control Channel (PDCCH), the method comprising:

receiving PDCCH detection information of at least one cell and scaling information of the PDCCH detection information, which are configured by network equipment through high-level signaling; wherein the PDCCH detection information comprises one or more of the following information: controlling resource set CORESET information, search space SS information, aggregation level AL information and candidate set candidate information; when the PDCCH detection information comprises SS information, all the search spaces are configured with scaling information of a common PDCCH detection information;

when the network equipment configures scaling information of PDCCH detection information of a plurality of cells for a terminal through high-level signaling, all the cells in the plurality of cells configure scaling information of one common PDCCH detection information, or the plurality of cells configure scaling information of at least two PDCCH detection information;

receiving an energy-saving signal sent by the network device, wherein one field of the energy-saving signal comprises indication information, and the indication information is used for specifying scaling information of PDCCH detection information used for processing the PDCCH detection information of each activated cell when a terminal carries out PDCCH detection on a channel of each activated cell;

4. The method of claim 3, wherein the scaling information of the PDCCH detection information comprises one or more of the following information: scaling information of the number of candidate sets, scaling information of aggregation levels, scaling information of search space detection opportunities, subset information of candidate sets in the PDCCH detection information, subset information of aggregation levels in the PDCCH detection information, and search space detection opportunity subset information.

5. A Physical Downlink Control Channel (PDCCH) detection device is characterized by comprising: a processor and a memory;

6. The apparatus of claim 5, wherein the scaling information of the PDCCH detection information comprises one or more of the following information: scaling information of the number of candidate sets, scaling information of aggregation levels, scaling information of search space detection opportunities, subset information of candidate sets in the PDCCH detection information, subset information of aggregation levels in the PDCCH detection information, and search space detection opportunity subset information.

7. A Physical Downlink Control Channel (PDCCH) detection device is characterized by comprising: a processor and a memory;

8. The apparatus of claim 7, wherein the scaling information of the PDCCH detection information comprises one or more of the following information: scaling information of the number of candidate sets, scaling information of aggregation levels, scaling information of search space detection opportunities, subset information of candidate sets in the PDCCH detection information, subset information of aggregation levels in the PDCCH detection information, and search space detection opportunity subset information.

9. A Physical Downlink Control Channel (PDCCH) detection device is characterized by comprising a processing module and a sending module, wherein,

the processing module is used for configuring the PDCCH detection information of at least one cell and the scaling information of the PDCCH detection information for the terminal through a high-level signaling; wherein the PDCCH detection information comprises one or more of the following information: controlling resource set CORESET information, search space SS information, aggregation level AL information and candidate set candidate information; when the PDCCH detection information comprises SS information, all the search spaces are configured with scaling information of a common PDCCH detection information;

the sending module is configured to send an energy-saving signal to the terminal, where a field of the energy-saving signal includes indication information, and the indication information is used to specify scaling information of PDCCH detection information used for processing PDCCH detection information of each activated cell when the terminal performs PDCCH detection on a channel of each activated cell.

10. A Physical Downlink Control Channel (PDCCH) detection device is characterized by comprising a first receiving module, a second receiving module and a processing module, wherein,

the first receiving module is configured to receive PDCCH detection information and scaling information of the PDCCH detection information of at least one cell configured by the network device through a high-level signaling; wherein the PDCCH detection information comprises one or more of the following information: controlling resource set CORESET information, search space SS information, aggregation level AL information and candidate set candidate information; when the PDCCH detection information comprises SS information, all the search spaces are configured with scaling information of a common PDCCH detection information;

the second receiving module is configured to receive an energy-saving signal sent by the network device, where one field of the energy-saving signal includes indication information, and the indication information is used to specify scaling information of PDCCH detection information used by a terminal to process PDCCH detection information of each activated cell when the terminal performs PDCCH detection on a channel of the activated cell;

and the processing module is configured to perform PDCCH detection on at least one channel of an active cell based on the configured PDCCH detection information and the indication information.

11. A computer storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to claim 1 or 2 or the steps of the method according to claim 3 or 4.