CN108270535B - Channel detection method and device - Google Patents

Channel detection method and device Download PDF

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Publication number
CN108270535B
CN108270535B CN201710002200.4A CN201710002200A CN108270535B CN 108270535 B CN108270535 B CN 108270535B CN 201710002200 A CN201710002200 A CN 201710002200A CN 108270535 B CN108270535 B CN 108270535B
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search space
control channel
corresponding relation
indication information
blind detection
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CN108270535A (en
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张晨晨
郝鹏
左志松
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2017/109791 priority patent/WO2018126782A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0238—Channel estimation using blind estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Abstract

The invention provides a channel detection method and a channel detection device. Wherein, the method comprises the following steps: sending indication information for indicating the terminal to perform blind detection to the terminal, wherein the indication information comprises one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and within a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space. The invention solves the problem of higher blind detection complexity caused by the fact that users in different wave beam directions or different user groups need to detect a plurality of downlink control channel resources in the related technology, and achieves the technical effect of improving the blind detection efficiency.

Description

Channel detection method and device
Technical Field
The present invention relates to the field of communications, and in particular, to a channel detection method and apparatus.
Background
With the development of wireless communication technology and the increasing demand of users for communication, fifth Generation mobile communication (5th Generation, abbreviated as 5G) technology has become a trend of future network development in order to meet higher, faster and more recent communication needs.
High frequency communication is one of important communication means of the future 5G technology, and high speed data communication can be provided by using a large bandwidth of high frequency communication to meet the demand for a large data volume in 5G communication. The loss is larger in high-frequency propagation, and the coverage radius is relatively smaller under the same power, which also determines that in the networking of a high-frequency communication system, a beamforming technology needs to be adopted for increasing the coverage radius. Therefore, whether the control channel or the traffic channel needs to be transmitted based on the beamforming technology, but is limited by factors such as the number of radio Frequency links, the transmission power, the beam gain, and the like, if coverage of multiple beams in different directions is to be achieved, it may need to be completed in a time Division manner, that is, different Orthogonal Frequency Division Multiplexing (OFDM) symbols or symbol groups achieve different beam direction transmission, for the downlink control channel, if control signaling for multiple users is to be sent in one scheduling time unit and the users are in different beam directions, a terminal may need to detect multiple downlink control channels, resulting in high blind detection complexity.
Aiming at the problem of higher blind detection complexity caused by the fact that users in different beam directions or different user groups need to detect a plurality of downlink control channel resources in the related technology, an effective solution is not provided yet.
Disclosure of Invention
The embodiment of the invention provides a channel detection method and a channel detection device, which are used for at least solving the problem of higher blind detection complexity caused by the fact that users in different beam directions or different user groups need to detect a plurality of downlink control channel resources in the related technology.
According to an embodiment of the present invention, there is provided a channel detection method including: sending indication information for indicating the terminal to perform blind detection on a channel to a terminal, wherein the indication information comprises one of the following information: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and in a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space.
Optionally, the indication information for indicating the terminal to perform blind detection on a channel is sent to the terminal by at least one of the following manners: a mode of dynamic notification through physical layer signaling; by means of semi-static notification of higher layer signaling.
Optionally, the search space comprises: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs).
Optionally, the first corresponding relationship includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space; the second correspondence includes: a correspondence between user group information and a first search space or a second search space; a correspondence between at least two user group information and one first search or second search space.
According to another embodiment of the present invention, there is provided a channel detection method including: receiving indication information sent by a base station, wherein the indication information comprises one of the following information: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space; and carrying out blind detection on the channel according to the indication information.
Optionally, the search space comprises: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs).
Optionally, the blind detecting the channel according to the indication information includes: when the indication information is the first corresponding relation, searching a search space corresponding to the current wave beam according to the first corresponding relation, and performing blind detection on the search space corresponding to the current wave beam;
when the indication information is the second corresponding relation, searching a search space corresponding to the current user group information according to the second corresponding relation, and performing blind detection on the search space corresponding to the current user group information; and when the indication information is a search space and a candidate search space which indicate the terminal to perform blind detection, acquiring an intersection between the search space and the candidate search space which are performed by the terminal to perform blind detection, and performing blind detection in the search space corresponding to the intersection.
Optionally, if the intersection between the search space in which the terminal performs blind detection and the candidate search space only includes one search space, performing blind detection in the one search space in the third predetermined time unit; if the intersection between the search space for blind detection by the terminal and the candidate search space comprises a plurality of search spaces, acquiring the search space with the highest priority according to the priorities of the plurality of search spaces, and performing blind detection on the search space with the highest priority in the third predetermined time unit, wherein the search spaces included in the candidate search spaces are arranged according to the priority.
According to another embodiment of the present invention, there is provided a channel detecting apparatus including: a sending module, configured to send, to a terminal, indication information for indicating the terminal to perform blind detection on a channel, where the indication information includes one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and in a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space.
Optionally, the sending module is further configured to send the indication information by: a mode of dynamic notification through physical layer signaling; by means of semi-static notification of higher layer signaling.
Optionally, the search space comprises: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs).
Optionally, the first corresponding relationship includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space;
the second correspondence includes: a correspondence between one user group information and one first search space or one second search space; a correspondence between at least two user group information and one first search or second search space.
According to another embodiment of the present invention, there is provided a channel detection apparatus including: a receiving module, configured to receive indication information sent by a base station, where the indication information includes one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space; and the processing module is used for carrying out blind detection on the channel according to the indication information.
Optionally, the search space comprises: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs).
Optionally, the processing module includes: a first processing unit, configured to, when the indication information is the first corresponding relationship, search a search space corresponding to a current beam according to the first corresponding relationship, and perform blind detection in the search space corresponding to the current beam; the second processing unit is used for searching a search space corresponding to the information of the current user group according to the second corresponding relation when the indication information is the second corresponding relation, and performing blind detection on the search space corresponding to the information of the current user group; and the third processing unit is configured to, when the indication information indicates a search space and a candidate search space for the terminal to perform blind detection, acquire an intersection between the search space and the candidate search space for the terminal to perform blind detection, and perform blind detection in a search space corresponding to the intersection.
Optionally, the processing module further comprises: a fourth processing unit, configured to, when an intersection between a search space in which the terminal performs blind detection and a candidate search space includes only one search space, perform blind detection in the one search space in the third predetermined time unit; a fifth processing unit, configured to, when an intersection between a search space in which the terminal performs blind detection and a candidate search space includes multiple search spaces, obtain a search space with a highest priority according to priorities of the multiple search spaces, and perform blind detection in the search space with the highest priority within the third predetermined time unit, where search spaces included in the candidate search space are arranged according to a priority manner.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:
sending indication information used for indicating the terminal to perform blind detection on a channel to a terminal, wherein the indication information comprises one of the following information: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and within a third preset time unit, indicating the terminal to carry out the search space of blind detection and the candidate search space.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
receiving indication information sent by a base station, wherein the indication information comprises one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space; and carrying out blind detection on the channel according to the indication information.
Through the invention, the indication information used for indicating the terminal to carry out blind detection on the channel is sent to the terminal, wherein the indication information comprises one of the following information: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and within a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space. That is to say, the invention transmits the indication information for blind detection to the terminal, so that the terminal performs blind detection in the corresponding search space according to the indication information, instead of performing blind detection in a plurality of search spaces in sequence, thereby solving the problem of higher blind detection complexity caused by the fact that users in different beam directions or different user groups need to detect a plurality of downlink control channel resources in the related art, and achieving the technical effect of improving the blind detection efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a channel detection method according to an embodiment of the invention;
fig. 2 is a schematic diagram of downlink control channel resources according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another downlink control channel resource according to an embodiment of the present invention;
fig. 4 is a block diagram of a channel detecting apparatus according to an embodiment of the present invention;
FIG. 5 is a flow chart of another channel detection method according to an embodiment of the present invention;
fig. 6 is a block diagram (one) of the structure of a channel detecting apparatus according to an embodiment of the present invention;
fig. 7 is a block diagram of the structure of a channel detection apparatus according to an embodiment of the present invention (ii);
fig. 8 is a block diagram (iii) of the structure of a channel detecting apparatus according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
In this embodiment, a channel detection method is provided, and fig. 1 is a flowchart of a channel detection method according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the following steps:
step S102, sending indication information for indicating the terminal to perform blind detection on the channel to the terminal,
wherein the indication information includes one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and within a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space.
It should be noted that, in this embodiment, the first predetermined time unit, the second predetermined time unit, and the third predetermined time unit include, but are not limited to: one or more scheduled time units, wherein, if a plurality of scheduled time units, there may be a plurality of scheduled time units that are continuous or discrete.
The downlink control channel may be a broadcast control channel, and all users in a cell may receive the downlink control channel, or may be a multicast control channel, and a group of users in a cell may receive the downlink control channel.
Optionally, in this embodiment, application scenarios of the channel detection method include, but are not limited to: users in different beam directions in the fifth Generation mobile communication (5th Generation, abbreviated as 5G) technology perform blind detection. In the application scenario, sending indication information for indicating the terminal to perform blind detection on a channel to the terminal, where the indication information includes one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and within a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space. That is to say, in this embodiment, the indication information for performing blind detection is sent to the terminal, so that the terminal performs blind detection in the corresponding search space according to the indication information, instead of performing blind detection in a plurality of search spaces in sequence, thereby solving the problem in the related art that the complexity of blind detection is high due to the fact that users in different beam directions or different user groups need to detect a plurality of downlink control channel resources, and achieving the technical effect of improving the blind detection efficiency.
In an optional embodiment, the indication information for indicating the terminal to perform blind detection on the channel may be sent to the terminal by at least one of: a mode of dynamic notification through physical layer signaling; by means of semi-static notification of higher layer signaling.
Optionally, the search space includes: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs).
For example, the first search space may be one OFDM symbol, or one OFDM symbol group, or 1/n of one OFDM symbol, where n is a positive integer; may be one PRB Set in the frequency domain.
The second search space corresponds to a plurality of continuous Control Channel elements (CCEs for short), the time domain resource mapped by the continuous CCEs may be one OFDM symbol, or one OFDM symbol group, or 1/n of one OFDM symbol, where n is a positive integer; the frequency domain Resource may be a Set of Physical Resource Blocks (PRBs) Set or a subset of a PRB Set.
Optionally, in an embodiment of the present invention, the first corresponding relationship includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space;
the second correspondence relationship includes: a correspondence between user group information and a first search space or a second search space; a correspondence between at least two user group information and one first search or second search space.
This embodiment is illustrated below with reference to an alternative embodiment.
Alternative embodiment 1
The embodiment provides a channel detection method, which mainly adopts a dynamic indication mode. Specifically, the base station indicates, in the downlink control channel, that the corresponding relationship between the beam of the downlink control channel and the first search space is sent in the first time unit. And the base station indicates the corresponding relation between the beam of the downlink control channel and the second search space in the first time unit in the downlink control channel.
Optionally, in this embodiment, the correspondence relationship may be one-to-one correspondence, that is, one beam corresponds to one first search space, or multiple correspondences, that is, multiple beams correspond to the same first search space.
The correspondence relationship may be one-to-one correspondence, that is, one beam corresponds to one second search space, or multiple correspondences, that is, multiple beams correspond to the same second search space.
The downlink control channel may be a broadcast control channel, which can be received by all users in a cell, or a multicast control channel, which can be received by a group of users in a cell.
The first time unit may be one or more scheduling time units, and if the first time unit is a plurality of scheduling time units, the first time unit may be a plurality of continuous or discrete scheduling time units.
In the first search space in this embodiment, the time domain may be one OFDM symbol, one OFDM symbol group, or 1/n of one OFDM symbol, where n is a positive integer; there may be one PRB Set in the frequency domain. The second search space corresponds to a plurality of consecutive CCEs, the time domain resource mapped by the consecutive CCEs may be one OFDM symbol, or one OFDM symbol group, or 1/n of one OFDM symbol, where n is a positive integer; the frequency domain Resource may be a Set of Physical Resource Blocks (PRBs) or a subset of a Set of PRBs.
And after receiving the dynamic instruction, the terminal performs blind detection on the downlink control channel in the first search space corresponding to the corresponding beam according to the current beam information of the terminal, or performs blind detection on the downlink control channel in the second search space corresponding to the corresponding beam according to the current beam information of the terminal after receiving the dynamic instruction.
Alternative embodiment two
The embodiment provides a channel detection method, which mainly adopts a dynamic indication mode. Specifically, the base station indicates, in the downlink control channel, a correspondence relationship between the user group information and the first search space in the first time unit. And the base station indicates the corresponding relation between the user group information and the second search space in the first time unit in the downlink control channel.
The correspondence relationship may be one-to-one correspondence, that is, one user group corresponds to one first search space, or may be multiple-to-one correspondence, that is, a plurality of user groups correspond to the same first search space.
The correspondence relationship may be one-to-one correspondence, i.e., one user group corresponds to one second search space, or multiple correspondences, i.e., multiple user groups correspond to the same second search space.
The user group information may be a group ID information, such as a group Radio Network Temporary Identity (RNTI), where users having the same group ID information belong to the same user group, and different group ID information corresponds to different user groups.
After receiving the dynamic indication, the terminal detects the downlink control channel in a first search space corresponding to the corresponding user group according to the current user group information. Or after receiving the dynamic indication, the terminal detects the downlink control channel in a blind manner in a second search space corresponding to the corresponding user group according to the current user group information.
Optionally, in the present embodiment, the foregoing content of the present embodiment will be illustrated in detail with reference to the following specific examples.
Example 1
The downlink control channel includes a plurality of PRB Sets in the frequency domain, where the PRB Set0 is used to transmit common control information, which is called a common control domain, and one or more other PRB Sets are used to transmit non-common control information, which may include group control information or UE-specific control information, as shown in fig. 2.
The common control information transmitted in PRB Set0 includes a "non-common control channel indication" field, which indicates in which beam directions the current slot base station has transmitted the downlink control channel, and OFDM symbols corresponding to these beam directions. For example, Beam0 is transmitted on OFDM Symbol0, and Beam 2 is transmitted on OFDM Symbol 1.
The terminal decodes the common control information, after reading the 'non-common control channel indication' field, knows that the current slot sends the beam of the non-common control information and a specific OFDM symbol, and confirms whether the non-common control channel needs to be received currently according to the beam ID corresponding to the current slot, specifically, if the 'non-common control channel indication' field indicates that the current slot transmits the beam direction of the terminal, the terminal blindly detects the non-common control channel on the corresponding OFDM symbol further according to the indication of the field. If the non-common control channel indication domain indicates that the current slot does not transmit the beam direction of the terminal, the terminal considers that the current slot does not need to receive the non-common control channel, so that blind detection operation is not needed. For example, if the Beam direction of the current slot of the terminal is Beam 1, the terminal considers that the current slot does not need to receive the non-common control channel, and does not perform blind detection. For another example, if the Beam direction of the current slot of the terminal is Beam 2, the terminal learns that the current slot base station has sent the non-common control channel to itself by reading the "non-common control channel indication" field, and the search space is time domain OFDM Symbol 1, and the frequency domain is PRB Set1 or a subset thereof.
Example two
The common control information sent in PRB Set0 includes a field of "non-common control channel indication", which indicates to which user groups the current slot base station has sent downlink control channels, and the downlink control channel search spaces of these user groups. For example, downlink control channels are transmitted to user group 0 and user group 2, the search space for the downlink control channel of user group 0 is search space 0, and the search space for the downlink control channel of user group 2 is search space 1, as shown in fig. 3, where CCE0-CCE7 is search space 0, corresponding to the left part in fig. 3, and CCE 8-CCE 15 are search space 1, corresponding to the right part in fig. 3.
The method comprises the steps that a terminal decodes public control information, after a 'non-public control channel indication' field is read, the terminal knows which user groups a current slot base station sends downlink control channels and search space indexes corresponding to each user group, the terminal confirms whether the non-public control channels need to be received currently or not according to user group IDs corresponding to the current slot, and specifically, if the 'non-public control channel indication' field indicates that the current slot transmits the non-public control channels to the user groups where the terminal is located, the terminal blindly detects the non-public control channels of the terminal in corresponding search spaces further according to the indication of the field; if the non-common control channel indication domain indicates that the current slot does not transmit the non-common control channel to the user group in which the terminal is located, the terminal considers that the current slot does not need to receive the non-common control channel, and therefore blind detection operation is not needed. For example, if the user group in which the current slot of the terminal is located is user group 1, the terminal considers that the current slot does not need to receive the non-common control channel, and blind detection is not performed. If the user group in which the slot of the terminal is currently located is a user group 0, the terminal learns that the current slot base station sends a non-common control channel to the user group in which the terminal is currently located by reading a 'non-common control channel indication' field, and if the search space is a search space 0, the terminal blindly detects the non-common control channel in the search space 0.
Example three
The base station semi-statically configures a candidate search space set A for the terminal 1 through Radio Resource Control (RRC) signaling, wherein A is { search space 1, search space 2 and search space 3}, and semi-statically configures a candidate search space set B for the terminal 2 through RRC signaling, and B is { search space 1 and search space 4 }.
The common control information sent by the base station in PRB Set0 contains a "non-common control channel indication" field, which indicates that the current slot user performs blind detection in search space group C, where C is { search space 2, search space 4 }.
The terminal decodes the public control information, after reading the 'non-public control channel indication' field, knows that the PDCCH sent by the current slot base station to different users is in the range of a search space 2 and a search space 4, and simultaneously, the user checks the RRC semi-static configuration candidate search space set received by the user for the last time, for the terminal 1, the search space set A and the search space set C are intersected, the search space of the user in the current slot is determined to be a search space 2, for the terminal 2, the search space set B and the search space set C are intersected, and the search space of the user in the current slot is determined to be a search space 4.
The terminal 1 performs blind detection on the non-common control channel in the search space 2 of the current slot, and the terminal 2 performs blind detection on the non-common control channel in the search space 4 of the current slot.
Through the embodiment of the invention, the problem of higher blind detection complexity caused by the fact that users in different wave beam directions or different user groups need to detect a plurality of downlink control channel resources in the related technology is solved, and the technical effect of improving the blind detection efficiency is achieved.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 2
In this embodiment, a channel detection apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details of which have been already described are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware or a combination of software and hardware is also possible and contemplated.
Fig. 4 is a block diagram of a channel detecting apparatus according to an embodiment of the present invention, as shown in fig. 4, the apparatus including:
1) a sending module 42, configured to send, to a terminal, indication information for indicating the terminal to perform blind detection on a channel,
wherein the indication information comprises one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and within a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space.
It should be noted that, in this embodiment, the first predetermined time unit, the second predetermined time unit, and the third predetermined time unit include, but are not limited to: one or more scheduled time units, wherein, if a plurality of scheduled time units, there may be a plurality of scheduled time units that are continuous or discrete.
The downlink control channel may be a broadcast control channel, which can be received by all users in a cell, or a multicast control channel, which can be received by a group of users in a cell.
Optionally, in this embodiment, the application scenarios of the channel detection apparatus include, but are not limited to: users in different beam directions in the fifth Generation mobile communication (5th Generation, abbreviated as 5G) technology perform blind detection. In the application scenario, sending indication information for indicating the terminal to perform blind detection on a channel to the terminal, wherein the indication information includes one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and within a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space. That is to say, in this embodiment, the indication information for performing blind detection is sent to the terminal, so that the terminal performs blind detection in the corresponding search space according to the indication information, instead of performing blind detection in a plurality of search spaces in sequence, thereby solving the problem in the related art that the complexity of blind detection is high due to the fact that users in different beam directions or different user groups need to detect a plurality of downlink control channel resources, and achieving the technical effect of improving the blind detection efficiency.
In an optional embodiment, the sending module is further configured to send the indication information by: a mode of dynamic notification through physical layer signaling; by means of semi-static notification of higher layer signaling.
Optionally, the search space includes: a first search space or a second search space, wherein the first search space is one or more orthogonal frequency division multiplexing, OFDM, symbols in the time domain and one or more physical resource blocks, PRBs, in the frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs).
For example, the first search space may be one OFDM symbol, or one OFDM symbol group, or 1/n of one OFDM symbol in the time domain, where n is a positive integer; there may be one PRB Set in the frequency domain.
The second search space corresponds to a plurality of continuous CCEs, the time domain resources mapped by the continuous CCEs can be one OFDM symbol, one OFDM symbol group, or 1/n of one OFDM symbol, and n is a positive integer; the frequency domain Resource may be one Physical Resource Block (PRB) Set or a subset of one PRB Set.
The first correspondence relationship includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space;
the second correspondence relationship includes: a correspondence between user group information and a first search space or a second search space; a correspondence between at least two user group information and one first search or second search space.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Example 3
In this embodiment, a channel detection method is provided, and fig. 5 is a flowchart of another channel detection method according to an embodiment of the present invention, as shown in fig. 5, the flowchart includes the following steps:
step S502, receiving indication information sent by a base station, where the indication information includes one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space;
step S504, blind detection is carried out on the channel according to the indication information.
It should be noted that, in this embodiment, the first predetermined time unit, the second predetermined time unit, and the third predetermined time unit include, but are not limited to: one or more scheduled time units, wherein, if a plurality of scheduled time units, there may be a plurality of scheduled time units that are continuous or discrete.
The downlink control channel may be a broadcast control channel, and all users in a cell may receive the downlink control channel, or may be a multicast control channel, and a group of users in a cell may receive the downlink control channel.
Optionally, in this embodiment, application scenarios of the channel detection method include, but are not limited to: users in different beam directions in the fifth Generation mobile communication (5th Generation, abbreviated as 5G) technology perform blind detection. In the application scenario, receiving indication information sent by a base station, wherein the indication information includes one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space; and carrying out blind detection on the channel according to the indication information. That is to say, in this embodiment, blind detection is performed in the corresponding search space by receiving indication information for performing blind detection sent by the base station, instead of performing blind detection in a plurality of search spaces in sequence, so that the problem of higher blind detection complexity caused by the fact that users in different beam directions or different user groups need to detect a plurality of downlink control channel resources in the related art is solved, and the technical effect of improving blind detection efficiency is achieved.
In an optional embodiment, the search space includes: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs).
For example, the first search space may be one OFDM symbol, or one OFDM symbol group, or 1/n of one OFDM symbol in the time domain, where n is a positive integer; there may be one PRB Set in the frequency domain.
The second search space corresponds to a plurality of continuous CCEs, the time domain resources mapped by the continuous CCEs can be one OFDM symbol, one OFDM symbol group, or 1/n of one OFDM symbol, and n is a positive integer; the frequency domain Resource may be one Physical Resource Block (PRB) Set or a subset of one PRB Set.
In an optional embodiment, the blind detection of the channel according to the indication information includes the following steps:
step S11, when the indication information is the first corresponding relationship, searching a search space corresponding to the current beam according to the first corresponding relationship, and performing blind detection in the search space corresponding to the current beam;
step S12, when the indication information is the second corresponding relation, searching the searching space corresponding to the current user group information according to the second corresponding relation, and carrying out blind detection in the searching space corresponding to the current user group information;
step S13, when the indication information indicates the search space and the candidate search space for the terminal to perform the blind detection, obtaining an intersection between the search space and the candidate search space for the terminal to perform the blind detection, and performing the blind detection in the search space corresponding to the intersection.
Optionally, if the intersection between the search space where the terminal performs blind detection and the candidate search space only includes one search space, performing blind detection in the one search space in the third predetermined time unit; and if the intersection set between the search space for blind detection by the terminal and the candidate search space comprises a plurality of search spaces, acquiring the search space with the highest priority according to the priorities of the plurality of search spaces, and performing blind detection in the search space with the highest priority in the third preset time unit.
The search spaces included in the candidate search spaces are arranged in a priority manner.
Through the invention, the user can carry out blind detection in the specific search space indicated by the dynamic signaling or the dynamic signaling combined with the semi-static signaling, thereby greatly reducing the blind detection times and complexity.
This embodiment is illustrated below with reference to an alternative embodiment.
The embodiment provides a channel detection method, which mainly adopts an indication mode combining dynamic and semi-static. Specifically, the base station semi-statically configures a candidate first search space/second search space group of the user through high-layer signaling, and the group may include one or more first search spaces/second search spaces.
The base station indicates in the downlink control channel that the terminal performs blind detection in a first search space/a second search space group in a first time unit, where the first search space/the second search space group may include one or more first search spaces/second search spaces.
After receiving the candidate first search space/second search space group configured in a semi-static manner and the first search space/second search space group configured in a dynamic manner, the terminal acquires an intersection of the two first search space/second search space group indexes, and if an intersection is acquired to acquire a first search space/second search space index, the user performs blind detection on the search space indicated by the first search space/second search space index in the first time unit; if the intersection is taken to obtain a plurality of first search space/second search space indexes, determining the priority according to the sequence of the first search space/second search space indexes in the candidate first search space/second search space group, taking the first search space/second search space index with the highest priority, and carrying out blind detection on the first search space/second search space corresponding to the index in the first time unit; and if no first search space/second search space index is obtained after the intersection is taken, blind detection is not carried out on any first search space/second search space by the user in the first time unit.
Through the embodiment of the invention, the user can carry out blind detection in the specific search space indicated by the dynamic signaling or the dynamic signaling combined with the semi-static signaling, thereby greatly reducing the blind detection times and complexity.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 4
In this embodiment, a channel detection apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and the description already made is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 6 is a block diagram (a) of a channel detection apparatus according to an embodiment of the present invention, and as shown in fig. 6, the apparatus includes:
1) a receiving module 62, configured to receive indication information sent by a base station, where the indication information includes one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space;
2) and a processing module 64, configured to perform blind detection on the channel according to the indication information.
It should be noted that, in this embodiment, the first predetermined time unit, the second predetermined time unit, and the third predetermined time unit include, but are not limited to: one or more scheduled time units, wherein, if a plurality of scheduled time units, there may be a plurality of scheduled time units that are continuous or discrete.
The downlink control channel may be a broadcast control channel, and all users in a cell may receive the downlink control channel, or may be a multicast control channel, and a group of users in a cell may receive the downlink control channel.
Optionally, in this embodiment, the application scenarios of the channel detection apparatus include, but are not limited to: users in different beam directions in the fifth Generation mobile communication (5th Generation, abbreviated as 5G) technology perform blind detection. In the application scenario, receiving indication information sent by a base station, wherein the indication information includes one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space; and carrying out blind detection on the channel according to the indication information. That is to say, the apparatus provided in this embodiment performs blind detection in the corresponding search space by receiving indication information for performing blind detection sent by the base station, instead of performing blind detection in sequence in multiple search spaces, thereby solving the problem in the related art that the complexity of blind detection is high due to the fact that users in different beam directions or different user groups need to detect multiple downlink control channel resources, and achieving the technical effect of improving the efficiency of blind detection.
In an optional embodiment, the search space includes: the method comprises the steps of obtaining a first search space and/or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more consecutive control channel elements CCE.
Fig. 7 is a block diagram of a structure of a channel detection apparatus according to an embodiment of the present invention (ii), and as shown in fig. 7, the processing module 64 includes:
1) a first processing unit 72, configured to, when the indication information is the first corresponding relationship, search a search space corresponding to the current beam according to the first corresponding relationship, and perform blind detection in the search space corresponding to the current beam;
2) a second processing unit 74, configured to, when the indication information is the second corresponding relationship, search a search space corresponding to the current user group information according to the second corresponding relationship, and perform blind detection in the search space corresponding to the current user group information;
3) and the third processing unit 76 is configured to, when the indication information is a search space and a candidate search space that indicate the terminal to perform blind detection, acquire an intersection between the search space and the candidate search space that the terminal performs blind detection, and perform blind detection in a search space corresponding to the intersection.
Fig. 8 is a block diagram (three) of the structure of the channel detection apparatus according to the embodiment of the present invention, and as shown in fig. 8, the processing module 64 further includes:
1) a fourth processing unit 82, configured to, when an intersection between the search space for blind detection by the terminal and the candidate search space includes only one search space, perform blind detection in the one search space within the third predetermined time unit;
2) a fifth processing unit 84, configured to, when an intersection between the search space where the terminal performs blind detection and the candidate search space includes multiple search spaces, obtain a search space with a highest priority according to priorities of the multiple search spaces, and perform blind detection in the search space with the highest priority in the third predetermined time unit.
The search spaces included in the candidate search spaces are arranged in a priority manner.
Through the embodiment of the invention, the user can perform blind detection in the specific search space indicated by the dynamic signaling or the dynamic signaling combined with the semi-static signaling, thereby greatly reducing the blind detection times and complexity.
Example 5
The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:
s1, sending indication information for indicating the terminal to perform blind detection on the channel to the terminal, wherein the indication information includes one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; and in a third preset time unit, indicating the terminal to carry out the search space for blind detection and the candidate search space.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s2, receiving indication information sent by a base station, wherein the indication information comprises one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; a second corresponding relation between the user group information and the search space in a second predetermined time unit; in a third preset time unit, indicating the terminal to carry out a search space for blind detection and a candidate search space;
and S3, carrying out blind detection on the channel according to the indication information.
Optionally, in this embodiment, the storage medium may include but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
Alternatively, in the present embodiment, the processor executes the above step S1 according to the program code stored in the storage medium.
Alternatively, in the present embodiment, the processor executes the above steps S2, S3 according to program codes already stored in the storage medium.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A method for channel detection, comprising:
sending indication information for indicating the terminal to perform blind detection on a channel to a terminal;
wherein the indication information comprises one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; in a second preset time unit, the base station sends a second corresponding relation between the user group information and the search space;
the search space includes: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCE);
the first correspondence includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space;
the second correspondence includes: a correspondence between user group information and a first search space or a second search space; a correspondence between at least two user group information and one of the first search space or the second search space;
the first and second predetermined time units comprise: one or more scheduled time units, wherein the plurality of scheduled time units comprises a plurality of scheduled time units that are continuous or discrete.
2. The method of claim 1, wherein the indication information for indicating the terminal to perform blind channel detection is sent to the terminal by at least one of:
a mode of dynamic notification through physical layer signaling;
by means of semi-static notification of higher layer signaling.
3. A method for channel detection, comprising:
receiving indication information sent by a base station, wherein the indication information comprises one of the following: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; in a second preset time unit, the base station sends a second corresponding relation between the user group information and the search space;
blind detection is carried out on a channel according to the indication information;
the search space includes: either the first search space or the second search space,
the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCE);
the first correspondence includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space;
the second correspondence includes: a correspondence between user group information and a first search space or a second search space; a correspondence between at least two user group information and one of the first search space or the second search space;
the first and second predetermined time units comprise: one or more scheduled time units, wherein the plurality of scheduled time units comprises a plurality of scheduled time units that are continuous or discrete.
4. The method of claim 3,
the blind detection of the channel according to the indication information comprises:
when the indication information is the first corresponding relation, searching a search space corresponding to the current wave beam according to the first corresponding relation, and performing blind detection on the search space corresponding to the current wave beam;
and when the indication information is the second corresponding relation, searching a search space corresponding to the current user group information according to the second corresponding relation, and performing blind detection on the search space corresponding to the current user group information.
5. A channel detection device applied to a base station, comprising:
a sending module, configured to send, to a terminal, indication information for indicating the terminal to perform blind detection on a channel,
wherein the indication information comprises one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; in a second preset time unit, the base station sends a second corresponding relation between the user group information and the search space;
the search space includes: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCEs);
the first correspondence includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space;
the second correspondence includes: a correspondence between user group information and a first search space or a second search space; a correspondence between at least two user group information and one of the first search space or the second search space;
the first and second predetermined time units comprise: one or more scheduled time units, wherein the plurality of scheduled time units comprises a plurality of scheduled time units that are continuous or discrete.
6. The apparatus of claim 5, wherein the sending module is further configured to send the indication information by: a mode of dynamic notification through physical layer signaling; by means of semi-static notification of higher layer signaling.
7. A channel detection device applied to a terminal, comprising:
a receiving module, configured to receive indication information sent by a base station, where the indication information includes one of: in a first preset time unit, a base station sends a first corresponding relation between a wave beam of a downlink control channel and a search space; in a second preset time unit, the base station sends a second corresponding relation between the user group information and the search space;
the processing module is used for carrying out blind detection on the channel according to the indication information;
the search space includes: the method comprises the steps of obtaining a first search space or a second search space, wherein the first search space is one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols in a time domain and one or more Physical Resource Blocks (PRBs) in a frequency domain; the second search space is a time-frequency resource corresponding to one or more continuous Control Channel Elements (CCE);
the first correspondence includes: sending a corresponding relation between one wave beam of a downlink control channel and one first search space or second search space; sending a corresponding relation between at least two beams of a downlink control channel and a first search space or a second search space;
the second correspondence includes: a correspondence between user group information and a first search space or a second search space; a correspondence between at least two user group information and one of the first search space or the second search space;
the first and second predetermined time units comprise: one or more scheduled time units, wherein the plurality of scheduled time units comprises a plurality of scheduled time units that are continuous or discrete.
8. The apparatus of claim 7,
the processing module comprises:
a first processing unit, configured to, when the indication information is the first corresponding relationship, search a search space corresponding to a current beam according to the first corresponding relationship, and perform blind detection in the search space corresponding to the current beam;
and the second processing unit is used for searching a search space corresponding to the information of the current user group according to the second corresponding relation when the indication information is the second corresponding relation, and performing blind detection on the search space corresponding to the information of the current user group.
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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110831185A (en) * 2018-08-10 2020-02-21 华为技术有限公司 Communication method and device
CN110831020B (en) 2018-08-10 2022-05-24 华为技术有限公司 Method for detecting DCI (Downlink control information), method for configuring PDCCH (physical Downlink control channel) and communication device
CN110912662B (en) * 2018-09-14 2021-09-21 华为技术有限公司 Information detection method and device
CN111132279A (en) * 2018-10-31 2020-05-08 华为技术有限公司 Communication method and device
CN109412984B (en) * 2018-11-15 2021-01-01 中国电子科技集团公司第三十八研究所 Aitken acceleration method-based blind signal-to-noise ratio estimation method in multi-antenna scene
KR102174648B1 (en) * 2019-01-11 2020-11-05 엘지전자 주식회사 Method for transmitting and receiving signals in wireless communication system and apparatus supporting same
CN111614434B (en) 2019-02-25 2021-08-31 华为技术有限公司 Blind detection method for search space and communication device
CN113557778B (en) * 2019-08-08 2023-10-20 Oppo广东移动通信有限公司 Method and equipment for detecting and transmitting physical downlink control channel
CN113922922A (en) * 2020-07-10 2022-01-11 华为技术有限公司 Communication method, device and system
CN114826504A (en) * 2021-01-18 2022-07-29 大唐移动通信设备有限公司 Switching of target cell search space set and control method and device thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102415038A (en) * 2009-04-30 2012-04-11 高通股份有限公司 PDCCH search space design for LTE-A multi-carrier operation
CN102884752A (en) * 2010-05-05 2013-01-16 高通股份有限公司 Expanded search space for R-PDCCH in LTE-A
CN104038963A (en) * 2013-03-06 2014-09-10 株式会社Ntt都科摩 Method and device for transmitting control information in wireless communication system
CN104144502A (en) * 2013-05-10 2014-11-12 中国电信股份有限公司 Physical downlink control information acquisition method, device, terminal and system
CN104885377A (en) * 2012-12-21 2015-09-02 三星电子株式会社 Method and apparatus for transmitting and receiving control channel by beamforming in wireless communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013125873A1 (en) * 2012-02-21 2013-08-29 엘지전자 주식회사 Initial access method and device in wireless communication system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102415038A (en) * 2009-04-30 2012-04-11 高通股份有限公司 PDCCH search space design for LTE-A multi-carrier operation
CN102884752A (en) * 2010-05-05 2013-01-16 高通股份有限公司 Expanded search space for R-PDCCH in LTE-A
CN104885377A (en) * 2012-12-21 2015-09-02 三星电子株式会社 Method and apparatus for transmitting and receiving control channel by beamforming in wireless communication system
CN104038963A (en) * 2013-03-06 2014-09-10 株式会社Ntt都科摩 Method and device for transmitting control information in wireless communication system
CN104144502A (en) * 2013-05-10 2014-11-12 中国电信股份有限公司 Physical downlink control information acquisition method, device, terminal and system

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