CN111031603B - Method and equipment for configuring, receiving and sending physical downlink control channel - Google Patents

Method and equipment for configuring, receiving and sending physical downlink control channel Download PDF

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Publication number
CN111031603B
CN111031603B CN201811178369.6A CN201811178369A CN111031603B CN 111031603 B CN111031603 B CN 111031603B CN 201811178369 A CN201811178369 A CN 201811178369A CN 111031603 B CN111031603 B CN 111031603B
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search space
terminal
resource set
control resource
search
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CN111031603A (en
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杨拓
胡丽洁
夏亮
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method and equipment for configuring, receiving and sending a physical downlink control channel. According to the embodiment of the invention, the first control resource set responding to the recovery of the failure of the multiplexing receiving wave beam is used for transmitting other search spaces, so that the capacity of the control resource set is increased, the resource waste of the control resource set is reduced, and the flexibility of the configuration of the control resource set and the search spaces is increased. In addition, the embodiment of the invention also provides concrete implementation that the terminal detects different search spaces and uses different QCL relations at different stages at the same time.

Description

Method and equipment for configuring, receiving and sending physical downlink control channel
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for configuring, receiving and sending a physical downlink control channel.
Background
In a Downlink Control CHannel of a New-generation communication technology New Radio (5G NR), a Physical Downlink Control CHannel (PDCCH) is configured by two parts, namely, a Control resource SET (core SET) and a search space SET (search space SET). The CORESET mainly configures the resource position of the PDCCH, including frequency domain resources, a resource mapping mode, the size of resource element group bundling (REG bundle), and the like. The search space set mainly configures a detection period, a detection offset value, a detection time length, aggregation levels, the number of PDCCH candidate sets of each aggregation level, and the like of the search space set.
Due to the introduction of multi-beams, a Transmission Configuration Indication (TCI) state is introduced into a New Radio (NR), which means that a Quasi-public address (QCL) relationship exists between two reference signals. A terminal receives a Physical Downlink Control CHannel (PDCCH), and a high layer signaling configures one or more TCI states for a Control resource set (core) of the PDCCH received by the terminal. If the higher layer signaling configures only one TCI state, the terminal assumes that the DeModulation Reference Signal (DMRS) of the received PDCCH and the Reference Signal in the configured TCI state are quasi co-located (quasi co-located). If the higher layer signaling configures multiple TCI states, a media access Control Element (MAC CE) activates one of them. If the terminal does not receive the MAC CE activation command, the terminal assumes that the DMRS receiving the PDCCH is quasi co-located with a synchronization signal BLOCK (SS/PBCH BLOCK ) used for initial access.
The NR introduces a beam recovery procedure. Due to the rapid change of the channel, the quality of the beam received by the terminal may fluctuate, and when the terminal finds that the quality of the received beam is lower than a certain threshold and the occurrence frequency reaches a predetermined condition, a beam recovery process of the terminal may be triggered. Specifically, after the terminal finds that the beam fails, the terminal sends the PRACH on the PRACH resource configured by the high-level signaling as a beam failure recovery request, and then receives the PDCCH as a response of the base station to the beam failure recovery request. The higher layer signaling configures the search space for the terminal to receive the beam failure recovery response and its associated CORESET, on which no other search space is configured. When the terminal receives the PDCCH of the beam failure recovery response, the DMRS of the PDCCH and the index configured by a higher layer are assumed to be q new Is quasi co-located (quasi co-located). q. q.s new Is an index selected from candidate beam indexes configured by a higher layer.
The terminal cannot detect other search spaces in the CORESET associated with the beam failure recovery response search space in the current protocol. Therefore, even in the case where no beam failure occurs, the terminal cannot detect the CORESET. In NR, one terminal can configure 3 CORESET in only one active Bandwidth Part (BWP) at most, and considering that one CORESET transmits common control information, one CORESET can only be used as a reception beam failure recovery response, and only one CORESET can transmit a terminal-specific search space. In NR, at most 10 search spaces may be configured for the terminal, and different search spaces correspond to different control signaling formats or service states. If the CORESET of the received beam failure recovery response can only be used as the recovery response in the beam failure recovery process, but the probability of the terminal generating the beam failure is low, and the time length is short, so that the CORESET of the received beam failure recovery response cannot be used in most of time, and the remaining at most 9 search spaces need to be multiplexed onto the remaining 2 CORESETs, on one hand, the CORESET resource of the received beam failure recovery response is wasted, and on the other hand, the CORESET configuration and the search space configuration flexibility are reduced.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a method and a device for configuring, receiving, and sending a physical downlink control channel, so as to reduce waste of CORESET resources and improve flexibility of CORESET configuration and search space configuration.
The embodiment of the invention provides a method for configuring a physical downlink control channel, which is applied to a terminal and comprises the following steps:
receiving configuration information of a search space, the configuration information being used for configuring a first search space for receiving a beam failure recovery response and a first control resource set associated with the first search space, the first control resource set being a control resource set that can be configured to be associated with at least two search spaces, the at least two search spaces including the first search space.
The embodiment of the invention also provides a method for configuring the physical downlink control channel, which is applied to a base station and comprises the following steps:
transmitting configuration information of a search space, the configuration information being used for configuring a first search space of a beam failure recovery response and a first control resource set associated with the first search space, the first control resource set being a control resource set configurable to be associated with at least two search spaces, the at least two search spaces including the first search space.
The embodiment of the invention also provides a receiving method of the physical downlink control channel PDCCH, which is applied to a terminal and comprises the following steps:
when a terminal is not in a beam failure recovery process, the terminal detects PDCCHs in other search spaces in a first control resource set, wherein the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, the other search spaces are search spaces other than a first search space in the search spaces associated with the first control resource set, and the first search space is a search space for receiving a beam failure recovery response.
The embodiment of the invention also provides a sending method of the physical downlink control channel PDCCH, which is applied to a base station and comprises the following steps:
and sending the PDCCH to the terminal in other search spaces in a first control resource set, wherein the first control resource set is a control resource set which can be configured to be associated with at least two search spaces, the other search spaces are search spaces except the first search space in the search spaces associated with the first control resource set, and the first search space is a search space which is configured by the terminal and used for receiving the beam failure recovery response.
An embodiment of the present invention further provides a terminal, including a processor and a transceiver, where:
the transceiver is configured to detect PDCCHs in other search spaces in a first control resource set when a terminal is not in a beam failure recovery procedure, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, the other search spaces are search spaces other than a first search space among the search spaces associated with the first control resource set, and the first search space is a search space for receiving a beam failure recovery response.
An embodiment of the present invention further provides a base station, including a processor and a transceiver, where:
the transceiver is configured to transmit a PDCCH to a terminal in another search space in a first control resource set, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, the another search space is a search space other than a first search space among the search spaces associated with the first control resource set, and the first search space is a search space configured by the terminal for receiving a beam failure recovery response.
An embodiment of the present invention further provides a terminal, including a processor and a transceiver, where:
the transceiver is configured to receive configuration information of a search space, where the configuration information is used to configure a first search space for receiving a beam failure recovery response and a first set of control resources associated with the first search space, where the first set of control resources is a set of control resources configurable to be associated with at least two search spaces, where the at least two search spaces include the first search space.
An embodiment of the present invention further provides a base station, including a processor and a transceiver, where:
the transceiver is configured to transmit configuration information of a search space, where the configuration information is used to configure a first search space of a beam failure recovery response and a first set of control resources associated with the first search space, where the first set of control resources is a set of control resources configurable to be associated with at least two search spaces, and the at least two search spaces include the first search space.
An embodiment of the present invention further provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method as described above.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the method are implemented.
The method and the device for configuring, receiving and sending the physical downlink control channel provided by the embodiment of the invention can reduce the resource waste of CORESET and increase the flexibility of CORESET and search space configuration. In addition, the embodiment of the invention also provides the concrete implementation that the terminal detects different search spaces and uses different QCL relations at different stages at the same time.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view of an application scenario according to an embodiment of the present invention;
fig. 2 is a flowchart of a PDCCH configuring method according to an embodiment of the present invention;
fig. 3 is another flowchart of a PDCCH configuring method according to an embodiment of the present invention;
fig. 4 is a flowchart of a PDCCH receiving method according to an embodiment of the present invention;
fig. 5 is another flowchart of a method for transmitting a PDCCH according to an embodiment of the present invention;
fig. 6 is one of the structural diagrams of a terminal according to an embodiment of the present invention;
fig. 7 is a second structural diagram of a terminal according to an embodiment of the present invention;
FIG. 8 is a block diagram of a base station according to an embodiment of the present invention;
FIG. 9 is a second block diagram of a base station according to an embodiment of the present invention;
fig. 10 is a third structural diagram of a terminal according to an embodiment of the present invention;
FIG. 11 is a fourth block diagram of a terminal according to an embodiment of the present invention;
FIG. 12 is a third block diagram of a base station according to an embodiment of the present invention;
fig. 13 is a fourth structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.
The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership project" (3 rd Generation Partnership project,3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.
The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the methods described may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Referring to fig. 1, fig. 1 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a User terminal or a User Equipment (UE), where the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the terminal 11 is not limited in the embodiment of the present invention. The network device 12 may be a Base Station and/or a network element of a core network, wherein the Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), wherein the Base Station may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable term in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that the Base Station in the NR system is only taken as an example in the embodiment of the present invention, but the specific type of the Base Station is not limited.
The base stations may communicate with the terminals 11 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or user data with the core network through a backhaul. In some examples, some of these base stations may communicate with each other directly or indirectly over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.
The base station may communicate wirelessly with the terminal 11 via one or more access point antennas. Each base station may provide communication coverage for a respective coverage area. The coverage area of an access point may be partitioned into sectors that form only a portion of the coverage area. A wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.
The communication links in a wireless communication system may comprise an Uplink for carrying Uplink (UL) transmissions (e.g., from terminal 11 to network device 12) or a Downlink for carrying Downlink (DL) transmissions (e.g., from network device 12 to terminal 11). The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.
Referring to fig. 2, a method for configuring a PDCCH according to an embodiment of the present invention is applied to a terminal, and includes:
step 21, receiving configuration information of a search space, where the configuration information is used to configure a first search space for receiving a beam failure recovery response and a first control resource set associated with the first search space, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, and the at least two search spaces include the first search space.
Here, the configuration information of the search space is used to configure the first search space to receive the beam failure recovery response and to configure the first set of control resources associated with the first search space. To reduce the resource waste of the control resource set and increase the flexibility of the control resource set and the search space configuration, the control resource set (i.e., the first control resource set) associated with the first search space of the receive beam failure recovery response is no longer limited to being associated with the first search space, but may be associated with more search spaces. That is, in this embodiment of the present invention, the first control resource set may be configured to be associated with other search spaces besides the first search space, as needed.
Through the above steps, the first control resource set of the embodiment of the present invention may be associated with more than two search spaces (including the first search space), so that the application range of the first control resource set may be expanded, the resource waste of the control resource set may be reduced, and the flexibility of the configuration of the control resource set and the search spaces may be increased.
Referring to fig. 3, an embodiment of the present invention further provides a PDCCH configuring method, when applied to a network side, such as a base station, including:
step 31, sending configuration information of a search space, where the configuration information is used to configure a first search space of a beam failure recovery response and a first control resource set associated with the first search space, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, and the at least two search spaces include the first search space.
Here, similarly, the configuration information of the search space is used to configure the first search space and the associated first control resource set, and the first control resource set may also be associated with other search spaces, so that the resource waste of the control resource set may be reduced, and the flexibility of the configuration of the control resource set and the search space may be increased.
The above is the PDCCH configuration method provided in the embodiment of the present invention. The following embodiments of the present invention further provide a receiving method and a transmitting method for PDCCH, which will be described separately.
Referring to fig. 4, an embodiment of the present invention provides a PDCCH receiving method, applied to a terminal, including:
step 41, when the terminal is not in the beam failure recovery procedure, the terminal detects PDCCHs in other search spaces in a first control resource set, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, the other search spaces are search spaces other than the first search space among the search spaces associated with the first control resource set, and the first search space is a search space for receiving a beam failure recovery response.
Here, the terminal will detect the PDCCH in the other search spaces in the first control resource set without being in the beam failure recovery procedure, that is, the first control resource set of the embodiment of the present invention configures the associated first search space and other search spaces at the same time, and the first search space is a search space for receiving the beam failure recovery response.
Through the above steps, the first control resource set of the embodiment of the present invention can be used for transmitting the beam failure recovery response and for transmitting other search spaces at the same time, thereby increasing the capacity of the first control resource set, reducing the resource waste of the control resource set, and increasing the flexibility of the configuration of the control resource set and the search spaces.
In step 41, the case where the terminal is not in the beam failure recovery process may be any of the following cases:
1) The terminal is not in a random access procedure initiated due to a beam failure.
2) And the high layer of the terminal does not receive the beam failure example indication reported by the physical layer.
3) The terminal does not trigger a beam failure recovery procedure.
The above cases 1 to 3 are judged from the state of the higher layer (e.g., MAC layer) or physical layer of the terminal. Generally, when the quality of a beam received by a physical layer is lower than a predetermined threshold, a terminal reports to an MAC layer, and if the MAC layer receives the report from the terminal and reaches a predetermined condition, for example, the number of reports and/or the reporting frequency satisfy the predetermined condition, the MAC layer triggers a beam failure recovery procedure, and at this time, the physical layer sends a PRACH as a beam failure recovery request on a PRACH resource configured by a high-level signaling.
For example, case 1 may determine from a state of a physical layer of the terminal, when the MAC layer triggers a beam failure recovery procedure, the physical layer may send the PRACH as a beam failure recovery request, and if the terminal does not send the beam failure recovery request, it is determined that the terminal is not in a random access process initiated due to a beam failure. Case 2 may be determined from a state of the MAC layer of the terminal, and when the MAC layer does not receive an event that the received beam quality reported by the physical layer is lower than a predetermined threshold, it may be determined that the terminal is not in a random access process initiated due to a beam failure. Case 3 may also be determined from the state of the MAC layer of the terminal, and when the MAC layer does not trigger the beam failure recovery procedure, it may be considered that the terminal is not in the random access process initiated due to the beam failure.
In step 41, when the terminal detects PDCCHs in other search spaces in the first control resource set, the quasi-co-location relationship may be determined in such a manner that the terminal detects PDCCHs in other search spaces in the first control resource set according to the demodulation reference signal DMRS determined by the quasi-co-location relationship. For example, when the network side has not configured the TCI state in the first control resource set, it may be assumed that the DMRS for receiving the PDCCH in the other search space is quasi co-located with a synchronization signal BLOCK (SS/PBCH BLOCK) used for initial access; for another example, when the network side configures one TCI state in the first control resource set, it may be assumed that a demodulation reference signal DMRS for receiving the PDCCH in the other search space is quasi co-located with a reference signal in the TCI state in the first control resource set configured by higher layer signaling; for another example, when the network side configures multiple TCI states in the first control resource set and activates one of the TCI states through MAC signaling (assuming that the first MAC CE is the first MAC CE), it may be assumed that the DMRS for receiving the PDCCH in the other search spaces is quasi-co-located with the reference signal in the TCI state in the first control resource set activated by the first MAC CE.
Before the step 41, the terminal may receive configuration information of a search space, where the configuration information is used to configure the first search space and the first control resource set associated with the first search space, and configure the other search spaces and the first search spaces associated with the other search spaces. Through the configuration information, the terminal can acquire a first search space associated with the first control resource set and other search spaces.
In this embodiment of the present invention, when the terminal is in the beam failure recovery procedure, the terminal may further send a PRACH random access channel triggered by the beam failure, then detect the PDCCH in the first search space in the first control resource set, and suspend detecting the PDCCHs in the other search spaces in the first control resource set. Here, when the PDCCH of the first search space is detected in the first control resource set, the terminal may assume that the DMRS of the PDCCH in the first search space is quasi-co-located with a channel state information reference signal (CSI-RS) or a synchronization signal Block (SS/PBCH Block) configured by a network. Here, the index is q new The CSI-RS or SS/PBCH Block is an index selected by the terminal high layer from candidate beam indexes reported by the terminal measurement.
Optionally, as an implementation manner, after the PDCCH in the first search space is detected in the first control resource set, the terminal may further continue to detect PDCCHs in the other search spaces in the first control resource set after the beam failure recovery procedure is successfully completed or the terminal detects a DCI format in the first search space. Wherein, when continuing to detect PDCCH in the other search space in the first control resource set, the terminal assumes that DMRS of PDCCH in the other search space in the first control resource set is configured with terminal higher layer with index q new Is quasi co-located with respect to the CSI-RS or synchronization signal Block SS/PBCH Block. The higher terminal layer may specifically be a MAC layer.
Optionally, as another implementation manner, after detecting the PDCCH in the first search space in the first control resource set, if the terminal receives a second MAC CE for activating a TCI state or receives a TCI state in the first control resource set reconfigured by a network, the terminal may continue to detect the PDCCHs in the other search spaces in the first control resource set. Here, while continuing to detect PDCCHs in other search spaces in the first set of control resources, the terminal may assume that the DMRS of the PDCCHs in the other search spaces is received quasi co-located with reference signals in a TCI state in the first set of control resources reconfigured by the network or quasi co-located with reference signals in a TCI state in the first set of control resources activated by the second MAC CE.
As can be seen from the foregoing, the terminal according to the embodiment of the present invention may receive PDCCHs of other search spaces in the first control resource set associated with the first search space for receiving the beam failure recovery response, so that other search spaces may be transmitted by multiplexing the first control resource set for receiving the beam failure recovery response, thereby increasing the capacity of the control resource set, reducing the resource waste of the control resource set, and increasing the flexibility of the configuration of the control resource set and the search spaces. In addition, the embodiment of the invention also provides the concrete implementation that the terminal detects different search spaces and uses different QCL relations at different stages at the same time.
The implementation of the embodiments of the present invention on the network side is further provided below. Referring to fig. 5, an embodiment of the present invention further provides a method for sending a PDCCH, which is applied to a base station, and includes:
step 51, sending PDCCH to a terminal in other search spaces in a first control resource set, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, the other search spaces are search spaces other than a first search space in the search spaces associated with the first control resource set, and the first search space is a search space configured by the terminal for receiving a beam failure recovery response.
From the above steps, the base station transmits other search spaces by multiplexing the first control resource set of the reception beam failure recovery response, thereby increasing the capacity of the control resource set, reducing the resource waste of the control resource set, and increasing the flexibility of the configuration of the control resource set and the search spaces.
Further, in the embodiment of the present invention, when the terminal has a beam failure, or after the terminal starts a random access procedure initiated due to the beam failure, or after the terminal transmits a PRACH random access channel triggered by the beam failure, the base station stops transmitting PDCCHs to the terminal in other search spaces in the first control resource set; and after the terminal beam failure recovery process is successfully finished, or after the terminal detects a DCI format in the first search space, or after the terminal receives a TCI state configured by a high-level signaling, or after the terminal receives a TCI state activated by a MAC control element CE, continuing to transmit PDCCHs to the terminal in other search spaces in the first control resource set.
In addition, in order to configure the PDCCH for the terminal, before step 51, the base station may further transmit, to the terminal, configuration information of a search space, where the configuration information is used to configure the first search space and the first control resource set associated with the first search space, and configure the other search spaces and the first search spaces associated with the other search spaces.
Various methods of embodiments of the present invention have been described above. An apparatus for carrying out the above method is further provided below.
An embodiment of the present invention provides a terminal shown in fig. 6. Referring to fig. 6, an embodiment of the present invention provides a schematic structural diagram of a terminal 600, including:
a transceiver 601, configured to receive configuration information of a search space, where the configuration information is used to configure a first search space for receiving a beam failure recovery response and a first set of control resources associated with the first search space, where the first set of control resources is a set of control resources that can be configured to be associated with at least two search spaces, and the at least two search spaces include the first search space.
Referring to fig. 7, another structural diagram of a terminal according to an embodiment of the present invention is shown, where the terminal 700 includes: a processor 701, a transceiver 702, a memory 703, a user interface 704 and a bus interface.
In this embodiment of the present invention, the terminal 700 further includes: a computer program stored on the memory 703 and executable on the processor 701.
The transceiver 702 is configured to receive configuration information of a search space, where the configuration information is used to configure a first search space for receiving a beam failure recovery response and a first set of control resources associated with the first search space, where the first set of control resources is a set of control resources that can be configured to be associated with at least two search spaces, and the at least two search spaces include the first search space.
The processor 701 is configured to read a program in a memory, and execute the following processes: configuration information for the search space received by the transceiver 702 is saved.
In FIG. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits representing one or more processors, in particular processor 701, and memory, in particular memory 703 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 transceiver 702 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 704 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.
An embodiment of the present invention provides a base station shown in fig. 8. Referring to fig. 8, a schematic structural diagram of a base station 800 according to an embodiment of the present invention includes a transceiver 801, where:
the transceiver 801 is configured to transmit configuration information of a search space, where the configuration information is used to configure a first search space of a beam failure recovery response and a first control resource set associated with the first search space, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, and the at least two search spaces include the first search space.
Referring to fig. 9, another structural diagram of a base station 900 according to an embodiment of the present invention is provided, including: a processor 901, a transceiver 902, a memory 903, and a bus interface, wherein:
the transceiver 902 is configured to transmit configuration information of a search space, where the configuration information is used to configure a first search space of a beam failure recovery response and a first set of control resources associated with the first search space, where the first set of control resources is a set of control resources configurable to be associated with at least two search spaces, and the at least two search spaces include the first search space.
In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 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 transceiver 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 901 is responsible for managing a bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.
An embodiment of the present invention provides a terminal shown in fig. 10. Referring to fig. 10, an embodiment of the present invention provides a structural schematic diagram of a terminal 1000, including:
a transceiver 1001, configured to detect PDCCHs in another search space in a first control resource set when a terminal is not in a beam failure recovery procedure, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, the another search space is a search space other than a first search space among the search spaces associated with the first control resource set, and the first search space is a search space for receiving a beam failure recovery response.
Preferably, the transceiver 1001 is further configured to receive, before the step of detecting PDCCHs in other search spaces in the first set of control resources, configuration information of a search space, where the configuration information is used to configure the first search space and the first set of control resources associated with the first search space, and to configure the other search spaces and the first search spaces associated with the other search spaces.
Preferably, the process of recovering that the terminal is not in the beam failure includes:
the terminal is not in the random access process initiated due to beam failure; or,
the high layer of the terminal does not receive the beam failure example indication reported by the physical layer; or,
the terminal does not trigger a beam failure recovery procedure.
Preferably, the transceiver 1001 is further configured to, when detecting PDCCHs in other search spaces in the first control resource set, assume that DMRS for receiving PDCCH in other search spaces is quasi-co-located with a synchronization signal BLOCK SS/PBCH BLOCK used for initial access, or quasi-co-located with a reference signal in a TCI in the first control resource set configured by higher layer signaling, or quasi-co-located with a reference signal in a TCI state in the first control resource set activated by a first MAC control element CE.
Preferably, the transceiver 1001 is further configured to transmit a PRACH random access channel triggered by a beam failure, and then detect the PDCCH in the first search space in the first control resource set, and suspend detecting the PDCCHs in the other search spaces in the first control resource set.
Preferably, the transceiver 1001 is further configured to assume that, when the PDCCH in the first search space is detected in the first control resource set, the DMRS of the PDCCH in the first search space is quasi-co-located with a CSI-RS or a SS/PBCH Block configured in a higher layer of a terminal.
Preferably, the transceiver 1001 is further configured to continue to detect PDCCHs in the other search spaces in the first control resource set after the beam failure recovery procedure is successfully completed or a DCI format in the first search space is detected after the PDCCH in the first search space is detected in the first control resource set.
Preferably, the transceiver 1001 is further configured to assume that, when the PDCCH in the other search space continues to be detected in the first control resource set, the DMRS of the PDCCH in the other search space in the first control resource set is quasi-co-located with a CSI-RS or a SS/PBCH Block configured in a higher layer of the terminal.
Preferably, the transceiver 1001 is further configured to, after detecting the PDCCH in the first search space in the first control resource set, continue to detect the PDCCHs in the other search spaces in the first control resource set after receiving the second MAC CE for activating one TCI state or receiving a TCI state in the first control resource set for network reconfiguration.
Preferably, the transceiver 1001 is further configured to assume that a demodulation reference signal DMRS of a PDCCH in another search space is received when continuing to detect the PDCCH in the other search space in the first control resource set, and the DMRS is quasi-co-located with a reference signal in a TCI state in the first control resource set reconfigured by a network, or quasi-co-located with a reference signal in a TCI state in the first control resource set activated by the second MAC CE.
Referring to fig. 11, another schematic structural diagram of a terminal according to an embodiment of the present invention is shown, where the terminal 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface.
In this embodiment of the present invention, the terminal 1100 further includes: a computer program stored on the memory 1103 and operable on the processor 1101.
The transceiver 1102 is configured to detect PDCCHs in other search spaces in a first control resource set when a terminal is not in a beam failure recovery procedure, where the first control resource set is a control resource set that can be configured to be associated with at least two search spaces, the other search spaces are search spaces other than a first search space among the search spaces associated with the first control resource set, and the first search space is a search space for receiving a beam failure recovery response.
The transceiver 1102 is further configured to receive, before the step of detecting PDCCHs in other search spaces in the first set of control resources, configuration information of a search space, where the configuration information is used to configure the first search space and the first set of control resources associated with the first search space, and to configure the other search spaces and the first search spaces associated with the other search spaces.
The processor 1101 is configured to read a program in the memory, and execute the following processes: the configuration information of the search space received by the transceiver 1102 is saved.
In fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1101, and various circuits, represented by memory 1103, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1102, which may be a plurality of elements including a transmitter and a receiver, provides a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1104 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 may store data used by the processor 1101 in performing operations.
Preferably, the process of recovering that the terminal is not in the beam failure includes:
the terminal is not in the random access process initiated due to beam failure; or,
the high layer of the terminal does not receive the beam failure example indication reported by the physical layer; or,
the terminal does not trigger a beam failure recovery procedure.
Preferably, the transceiver 1102 is further configured to, when detecting PDCCHs in other search spaces in the first control resource set, assume that a demodulation reference signal DMRS for receiving PDCCHs in the other search spaces is quasi-co-located with a synchronization signal BLOCK SS/PBCH BLOCK used for initial access, or quasi-co-located with a reference signal in a TCI in the first control resource set configured by higher layer signaling, or quasi-co-located with a reference signal in a TCI state in the first control resource set activated by a first MAC control element CE.
Preferably, the transceiver 1102 is further configured to transmit a PRACH random access channel triggered by a beam failure, then detect a PDCCH in the first search space in the first control resource set, and suspend detecting PDCCHs in the other search spaces in the first control resource set.
Preferably, the transceiver 1102 is further configured to assume that, when detecting the PDCCH of the first search space in the first control resource set, the DMRS of the PDCCH in the first search space is quasi-co-located with a channel state information reference signal CSI-RS or a synchronization signal Block SS/PBCH Block configured by a higher layer.
Preferably, the transceiver 1102 is further configured to continue to detect PDCCHs in the other search spaces in the first control resource set after the beam failure recovery procedure is successfully completed or a DCI format in the first search space is detected after the PDCCH in the first search space is detected in the first control resource set.
Preferably, the transceiver 1102 is further configured to assume that, when the PDCCH in the other search space continues to be detected in the first control resource set, the DMRS of the PDCCH in the other search space in the first control resource set is quasi-co-located with a channel state information reference signal CSI-RS or a synchronization signal Block SS/PBCH Block configured by a higher layer.
Preferably, the transceiver is further configured to, after detecting the PDCCH of the first search space in the first control resource set, continue to detect the PDCCHs in the other search spaces in the first control resource set after receiving the second MAC CE for activating one TCI state or receiving a TCI state in the first control resource set for network reconfiguration.
Preferably, the transceiver 1102 is further configured to assume that a demodulation reference signal DMRS of the PDCCH in the other search space is received when continuing to detect the PDCCH in the other search space in the first control resource set, is quasi-co-located with a reference signal in a TCI state in the first control resource set reconfigured by the network, or is quasi-co-located with a reference signal in a TCI state in the first control resource set activated by the second MAC CE.
An embodiment of the present invention provides a base station shown in fig. 12. Referring to fig. 12, an embodiment of the present invention provides a structural diagram of a base station 1200, which includes a transceiver 1201, where:
the transceiver 1201 is configured to transmit configuration information of a search space, the configuration information being used to configure a first search space of a beam failure recovery response and a first control resource set associated with the first search space, the first control resource set being a control resource set that can be configured to be associated with at least two search spaces, the at least two search spaces including the first search space.
Preferably, the transceiver 1201 is further configured to stop sending PDCCHs to the terminal in other search spaces in the first control resource set when a beam failure occurs in the terminal, or after the terminal starts a random access procedure initiated due to the beam failure, or after the terminal sends a PRACH random access channel triggered by the beam failure; and the number of the first and second groups,
after the terminal beam failure recovery procedure is successfully ended, or after the terminal detects a DCI format in the first search space, or after the terminal receives a TCI state configured by a high-level signaling, or after the terminal receives a TCI state activated by a MAC control element CE, the terminal continues to send PDCCHs to the terminal in other search spaces in the first control resource set.
Preferably, the transceiver 1201 is further configured to transmit configuration information of a search space before the step of transmitting PDCCH to the terminal in the other search spaces in the first control resource set, where the configuration information is used to configure the first search space and the first control resource set associated with the first search space, and configure the other search spaces and the first search spaces associated with the other search spaces.
Referring to fig. 13, another schematic structural diagram of a base station 1300 according to an embodiment of the present invention includes: a processor 1301, a transceiver 1302, a memory 1303 and a bus interface, wherein:
the transceiver 1302 is configured to transmit configuration information of a search space, where the configuration information is used to configure a first search space of a beam failure recovery response and a first set of control resources associated with the first search space, where the first set of control resources is a set of control resources that can be configured to be associated with at least two search spaces, and the at least two search spaces include the first search space.
In fig. 13, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1301 and various circuits of memory represented by memory 1303 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1302 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 1301 is responsible for managing a bus architecture and general processing, and the memory 1303 may store data used by the processor 1301 in performing operations.
Preferably, the transceiver 1302 is further configured to stop sending PDCCHs to the terminal in other search spaces in the first control resource set when a beam failure occurs in the terminal, or after the terminal starts a random access procedure initiated due to the beam failure, or after the terminal sends a PRACH random access channel triggered by the beam failure; and the number of the first and second groups,
and after the terminal beam failure recovery process is successfully finished or after the terminal detects a DCI format in the first search space or after the terminal receives a TCI state configured by a high-level signaling or after the terminal receives a TCI state activated by a MAC Control Element (CE), continuously transmitting the PDCCH to the terminal in other search spaces in the first control resource set.
Preferably, the transceiver 1302 is further configured to transmit configuration information of a search space before the step of transmitting the PDCCH to the terminal in the other search spaces in the first control resource set, where the configuration information is used to configure the first search space and the first control resource set associated with the first search space, and configure the other search spaces and the first search spaces associated with the other search spaces.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (32)

1. A method for configuring a Physical Downlink Control Channel (PDCCH) is applied to a terminal, and is characterized by comprising the following steps:
receiving configuration information of a search space, the configuration information being used to configure a first search space for receiving a beam failure recovery response and a first set of control resources associated with the first search space, the first set of control resources being a set of control resources configurable to be associated with at least two search spaces, the at least two search spaces including the first search space.
2. A method for configuring a Physical Downlink Control Channel (PDCCH) is applied to a base station, and is characterized by comprising the following steps:
transmitting configuration information of a search space, the configuration information being used for configuring a first search space of a beam failure recovery response and a first control resource set associated with the first search space, the first control resource set being a control resource set configurable to be associated with at least two search spaces, the at least two search spaces including the first search space.
3. A receiving method of a Physical Downlink Control Channel (PDCCH) is applied to a terminal, and is characterized by comprising the following steps:
when a terminal is not in a beam failure recovery process, the terminal detects PDCCHs in other search spaces in a first control resource set, wherein the first control resource set is a control resource set which can be configured to be associated with at least two search spaces, the other search spaces are search spaces except for a first search space in the search spaces associated with the first control resource set, and the first search space is a search space for receiving a beam failure recovery response.
4. The method of claim 3,
the recovery process that the terminal is not in the beam failure comprises the following steps:
the terminal is not in a random access process initiated due to beam failure; or,
the high layer of the terminal does not receive the beam failure example indication reported by the physical layer; or,
the terminal does not trigger a beam failure recovery procedure.
5. The method of claim 3,
when detecting the PDCCHs in the other search spaces in the first control resource set, the terminal assumes that the DMRS of the PDCCHs in the other search spaces are received, and the DMRS are quasi co-located with a synchronization signal BLOCK SS/PBCH BLOCK used by initial access, or are quasi co-located with a reference signal in TCI in the first control resource set configured by higher layer signaling, or are quasi co-located with a reference signal in a TCI state in the first control resource set activated by a first MAC control element CE.
6. The method of claim 3, further comprising:
and the terminal sends a PRACH random access channel triggered by beam failure, then detects the PDCCH of the first search space in the first control resource set, and suspends the detection of the PDCCHs in the other search spaces in the first control resource set.
7. The method of claim 6,
when the PDCCH of the first search space is detected in the first control resource set, the terminal assumes that the DMRS of the PDCCH in the first search space is quasi co-located with a channel state information reference signal (CSI-RS) or a synchronization signal Block (SS/PBCH Block) configured by a higher layer.
8. The method of claim 6, wherein after detecting the PDCCH of the first search space in the first set of control resources, the method further comprises:
after the beam failure recovery procedure is successfully completed or the terminal detects the DCI format in the first search space, the terminal continues to detect the PDCCHs in the other search spaces in the first control resource set.
9. The method according to claim 7 or 8,
and when the PDCCH in the other search space is continuously detected in the first control resource set, the terminal assumes that the DMRS of the PDCCH in the other search space in the first control resource set is quasi co-located with a channel state information reference signal CSI-RS or a synchronization signal Block SS/PBCH Block configured by a higher layer.
10. The method of claim 6, wherein after detecting the PDCCH of the first search space in the first set of control resources, the method further comprises:
after the terminal receives the second MAC CE for activating one TCI state or receives the TCI state in the first control resource set for network reconfiguration, the terminal continues to detect the PDCCHs in the other search spaces in the first control resource set.
11. The method of claim 10,
in continuing to detect the PDCCH in the other search space in the first set of control resources, the terminal assumes that a demodulation reference signal, DMRS, of the PDCCH in the other search space is received that is quasi co-located with a reference signal in a TCI state in the first set of control resources reconfigured by the network or that is quasi co-located with a reference signal in a TCI state in the first set of control resources activated by the second MAC CE.
12. The method of claim 3, wherein prior to the step of detecting PDCCHs in other search spaces in the first set of control resources, the method further comprises:
receiving configuration information of a search space, the configuration information being used to configure the first search space and the first control resource set associated with the first search space, and to configure the other search spaces and the first search spaces associated with the other search spaces.
13. A sending method of a Physical Downlink Control Channel (PDCCH) is applied to a base station, and is characterized by comprising the following steps:
and sending the PDCCH to a terminal in other search spaces in a first control resource set, wherein the first control resource set is a control resource set which can be configured to be associated with at least two search spaces, the other search spaces are search spaces except the first search space in the search spaces associated with the first control resource set, and the first search space is a search space which is configured by the terminal and used for receiving a beam failure recovery response.
14. The method of claim 13, further comprising:
stopping sending PDCCH to the terminal in other search spaces in the first control resource set when the terminal has beam failure or after the terminal starts a random access process initiated due to the beam failure or after the terminal sends a PRACH (physical random access channel) triggered by the beam failure; and (c) a second step of,
and after the terminal beam failure recovery process is successfully finished or after the terminal detects a DCI format in the first search space or after the terminal receives a TCI state configured by a high-level signaling or after the terminal receives a TCI state activated by a MAC Control Element (CE), continuously transmitting the PDCCH to the terminal in other search spaces in the first control resource set.
15. The method of claim 13, wherein before the step of transmitting the PDCCH to the terminal in the other search spaces in the first set of control resources, the method further comprises:
sending configuration information of a search space, where the configuration information is used to configure the first search space and the first control resource set associated with the first search space, and configure the other search spaces and the first search spaces associated with the other search spaces.
16. A terminal, comprising:
a transceiver configured to receive configuration information of a search space, the configuration information being used to configure a first search space for receiving a beam failure recovery response and a first set of control resources associated with the first search space, the first set of control resources being a set of control resources configurable to be associated with at least two search spaces, the at least two search spaces including the first search space.
17. A base station, comprising:
a transceiver configured to transmit configuration information of a search space, the configuration information being used to configure a first search space of a beam failure recovery response and a first set of control resources associated with the first search space, the first set of control resources being a set of control resources configurable to be associated with at least two search spaces, the at least two search spaces including the first search space.
18. A terminal, comprising:
a transceiver configured to detect PDCCHs in a first control resource set in an other search space when a terminal is not in a beam failure recovery procedure, wherein the first control resource set is a control resource set configurable to be associated with at least two search spaces, the other search space is a search space other than the first search space among the search spaces associated with the first control resource set, and the first search space is a search space for receiving a beam failure recovery response.
19. The terminal of claim 18,
the recovery process that the terminal is not in the beam failure comprises the following steps:
the terminal is not in a random access process initiated due to beam failure; or,
the high layer of the terminal does not receive the beam failure example indication reported by the physical layer; or,
the terminal does not trigger a beam failure recovery procedure.
20. The terminal of claim 18,
the transceiver is further configured to, when detecting PDCCHs in other search spaces in the first control resource set, assume that DMRS for demodulation of PDCCHs in the other search spaces is received and is quasi-co-located with a synchronization signal BLOCK SS/PBCH BLOCK used for initial access, or is quasi-co-located with a reference signal in a TCI in the first control resource set configured by a higher layer signaling, or is quasi-co-located with a reference signal in a TCI state in the first control resource set activated by a first MAC control element CE.
21. The terminal of claim 18,
the transceiver is further configured to send a PRACH random access channel triggered by a beam failure, then detect the PDCCH in the first search space in the first control resource set, and suspend detecting the PDCCHs in the other search spaces in the first control resource set.
22. The terminal of claim 21,
the transceiver is further configured to assume that, when detecting the PDCCH of the first search space in the first control resource set, the DMRS of the PDCCH in the first search space is quasi co-located with a channel state information reference signal, CSI-RS, or a synchronization signal Block, SS/PBCH, block configured by a higher layer.
23. The terminal of claim 21,
the transceiver is further configured to, after detecting the PDCCH in the first search space in the first control resource set, after the beam failure recovery procedure is successfully completed or a DCI format in the first search space is detected, continue to detect the PDCCHs in the other search spaces in the first control resource set.
24. The terminal according to claim 22 or 23,
the transceiver is further configured to assume that, when the PDCCH in the other search spaces continues to be detected in the first control resource set, the DMRS of the PDCCH in the other search spaces in the first control resource set is quasi-co-located with a channel state information reference signal CSI-RS or a synchronization signal Block SS/PBCH Block configured by a higher layer.
25. The terminal of claim 21,
the transceiver is further configured to, after detecting the PDCCH of the first search space in the first control resource set, continue to detect the PDCCHs in the other search spaces in the first control resource set after receiving a second MAC CE for activating one TCI state or receiving a TCI state in the first control resource set for network reconfiguration.
26. The terminal of claim 25,
the transceiver is further configured to assume that receiving a demodulation reference signal, DMRS, of the PDCCH in the other search space is quasi co-located with a reference signal in a TCI state in the first control resource set reconfigured by a network or quasi co-located with a reference signal in a TCI state in the first control resource set activated by the second MAC CE, when continuing to detect the PDCCH in the other search space in the first control resource set.
27. The terminal of claim 18,
the transceiver is further configured to receive, before the step of detecting PDCCHs in other search spaces in the first set of control resources, configuration information of a search space, where the configuration information is used to configure the first search space and the first set of control resources associated with the first search space, and to configure the other search spaces and the first search spaces associated with the other search spaces.
28. A base station, comprising:
a transceiver configured to transmit a PDCCH to a terminal in another search space in a first control resource set, where the first control resource set is a control resource set configurable to be associated with at least two search spaces, the another search space is a search space other than a first search space in the search space associated with the first control resource set, and the first search space is a search space configured by the terminal for receiving a beam failure recovery response.
29. The base station of claim 28,
the transceiver is further configured to stop sending PDCCHs to the terminal in other search spaces in the first control resource set when a beam failure occurs in the terminal, or after the terminal starts a random access procedure initiated due to the beam failure, or after the terminal sends a PRACH random access channel triggered by the beam failure; and the number of the first and second groups,
after the terminal beam failure recovery procedure is successfully ended, or after the terminal detects a DCI format in the first search space, or after the terminal receives a TCI state configured by a high-level signaling, or after the terminal receives a TCI state activated by a MAC control element CE, the terminal continues to send PDCCHs to the terminal in other search spaces in the first control resource set.
30. The base station of claim 28,
the transceiver is further configured to send, before the step of sending the PDCCH to the terminal in the other search spaces in the first control resource set, configuration information of a search space, where the configuration information is used to configure the first search space and the first control resource set associated with the first search space, and configure the other search spaces and the first search spaces associated with the other search spaces.
31. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method according to any of claims 1 to 15.
32. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 15.
CN201811178369.6A 2018-10-10 2018-10-10 Method and equipment for configuring, receiving and sending physical downlink control channel Active CN111031603B (en)

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Citations (1)

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Publication number Priority date Publication date Assignee Title
CN108289016A (en) * 2017-01-09 2018-07-17 华为技术有限公司 Method, terminal device and the network equipment of wireless communication

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