WO2023273935A1 - Method for receiving downlink control information, method for sending information and related apparatus - Google Patents
Method for receiving downlink control information, method for sending information and related apparatus Download PDFInfo
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- WO2023273935A1 WO2023273935A1 PCT/CN2022/099863 CN2022099863W WO2023273935A1 WO 2023273935 A1 WO2023273935 A1 WO 2023273935A1 CN 2022099863 W CN2022099863 W CN 2022099863W WO 2023273935 A1 WO2023273935 A1 WO 2023273935A1
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- indication information
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Definitions
- the embodiments of the present application relate to the field of communication technologies, and specifically relate to methods for receiving downlink control information, methods for sending information, and related devices.
- the new radio system introduces a multicast mechanism (point to multicast, PTM).
- PTM point to multicast
- the user equipment receiving the multicast needs to be in a radio resource control (radio resource control, RRC) connected state.
- RRC radio resource control
- the user equipment After the user equipment accesses the serving cell and establishes an RRC connection, it needs to receive downlink control information (downlink control information, DCI), so as to receive the multicast data indicated by the downlink control information.
- DCI downlink control information
- Embodiments of the present application provide a method for receiving downlink control information, a method for sending information, and related devices, aiming at reducing resource overhead for receiving downlink control information.
- the embodiment of the present application discloses a method for receiving downlink control information, the method includes:
- the user equipment receives the first indication information sent by the network device, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, and the above N is an integer greater than or equal to 1;
- the user equipment uses any one of the N candidate reference signals as the transmission state identifier of the control resource set;
- the user equipment receives first downlink control information from the control resource set according to the transmission state identifier of the control resource set.
- the method for receiving downlink control information provided in the embodiment of the present application may be applied to user equipment, and the foregoing user equipment may be understood as a device capable of data processing and network communication.
- the foregoing user device may include a mobile phone, a portable notebook, or a tablet computer, etc., which is not limited in the present application.
- the foregoing first indication information may be understood as information indicating one or more reference signals used to receive downlink control information, that is, indicating that the control resource set and the N candidate reference signals are of Gaussian coexistence QCL. Since the N candidate reference signals are not sent by the serving cell at the same time, the control resource set is Gaussianly co-existing with the N candidate reference signals in different time periods.
- any one of the above N candidate reference signals can be understood as a signal that enables a certain user equipment to receive the above-mentioned first downlink control information, but for different user equipments, the location where the user equipment is actually located in the serving cell In different beam coverage areas, the signal strengths of the above N candidate reference signals measured by the user equipment may be different.
- the user equipment receives the first indication information sent by the network equipment, the first indication information indicates N candidate reference signals, and the above N is an integer greater than or equal to 1; in the user equipment When it is necessary to update the signal for receiving downlink control information, any one of the above N candidate reference signals is automatically selected as the transmission status identifier of the control resource set, so as to receive downlink control information and achieve the purpose of reducing the resource overhead of receiving downlink control information .
- the user equipment receives the first downlink control information according to a signal with better signal quality among the N candidate reference signals.
- the user equipment may perform signal strength detection on signals among the above N candidate reference signals in the serving cell where it is currently located, and the user equipment uses the signal with better signal quality among them to receive the first downlink control information.
- the above-mentioned first indication information is transmitted through multicast; transmission by unicast or multicast.
- the first indication information indicates that the transmission status identifier of the control resource set corresponds to one candidate reference signal
- the first indication information is transmitted in a multicast manner
- the above-mentioned first indication information is transmitted in a unicast or multicast manner.
- the above-mentioned user equipment uses any one of the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set, including:
- the user equipment uses the first reference signal among the N candidate reference signals as the transmission status identifier of the control resource set;
- the above method further includes: at a second moment, the user equipment uses the second reference signal among the N candidate reference signals as the transmission status identifier of the control resource set; the first reference signal and the second reference signal are the N Different signals in candidate reference signals;
- the user equipment receives second downlink control information from the control resource set according to the transmission state identifier of the control resource set.
- the above-mentioned user equipment uses any one of the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set, including:
- the user equipment uses the reference signal with the best signal quality among the N candidate reference signals as the transmission status identifier of the control resource set; or,
- the user equipment uses one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
- the user equipment selects any one candidate reference signal as the transmission state identifier of the control resource set.
- the user equipment receives the second indication information sent by the network equipment, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, and the K is greater than or equal to 1 is an integer, the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
- the above method also includes:
- the user equipment sends third indication information to the network equipment; the third indication information indicates that the signal quality of the N candidate reference signals is lower than threshold.
- the third indication information includes Y signals of good signal quality for receiving downlink control information in the serving cell where the user equipment is currently located, and the above Y is an integer greater than or equal to 1.
- the above method also includes:
- the user equipment When the user equipment receives the fourth indication information sent by the network device through multicast and the fifth indication information sent through unicast at the same time, the user equipment uses the reference signal indicated by the fifth indication information as the above-mentioned The transmission status identifier of the control resource set; the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals; the fifth indication information indicates that the transmission status identifier of the control resource set corresponds to one reference signal Signal.
- the user equipment receives the first downlink control information according to a signal with better signal quality among the N candidate reference signals, including:
- the user equipment receives the first downlink control information according to the signal with the best signal quality among the N candidate reference signals.
- the user equipment receives the first downlink control information according to a signal with better signal quality among the N candidate reference signals, including:
- the above user equipment receives the first downlink control information according to the signal quality of the M candidate reference signals that is better and included in the above N candidate reference signals; the above M candidate reference signals are the ones in the serving cell where the above user equipment is currently located signal, the above M is an integer greater than or equal to 1.
- the user equipment directly detects the signal of the serving cell where it is currently located to obtain M candidate reference signals;
- the candidate reference signal is used to receive the first downlink control information.
- the M candidate reference signals are signals for receiving downlink control information in a serving cell where the user equipment is currently located.
- the embodiment of the present application discloses a method for sending information, and the method includes:
- the network device sends first indication information to the user equipment, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals; any signal in the above N candidate signals can be used by the user equipment to receive the first next Row control information, the above N is an integer greater than or equal to 1;
- the foregoing network device sends the foregoing first downlink control information to the foregoing user equipment.
- the method for sending information provided in the embodiments of the present application can be applied to network devices, and the foregoing network devices can be understood as devices capable of data processing and network communication.
- the foregoing network device may include a base station or a network access device, etc., which is not limited in this application.
- the network device sends the first indication information to the user, the first indication information indicates N candidate reference signals, and the above N is an integer greater than or equal to 1; since the above N candidate signals Any signal of can be used for the user equipment to receive the first downlink control information, that is, the user equipment can receive the above-mentioned first downlink control information through any signal in the N candidate reference signals, so that the user equipment needs to update the method of receiving the downlink control information
- any one of the above N candidate reference signals is automatically selected as the transmission status identifier of the control resource set, so as to receive downlink control information and achieve the purpose of reducing resource overhead for receiving downlink control information; Resource overhead in the process of receiving the downlink control information signal by the user equipment.
- the foregoing first indication information is transmitted in a unicast or multicast manner.
- the above method also includes:
- the network device sends second indication information to the user equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals; the above K is an integer greater than or equal to 1; the above K candidate reference signals Partially the same as or completely different from the above N candidate reference signals.
- the method further includes: the network device receiving third indication information sent by the user equipment, where the third indication information indicates that the signal quality of the N candidate reference signals is lower than a threshold.
- the third indication information includes Y signals of good signal quality for receiving downlink control information in the serving cell where the user equipment is currently located, and the above Y is an integer greater than or equal to 1.
- a user equipment including:
- the receiving unit is configured to receive first indication information sent by the network device, where the first indication information indicates that the transmission status identifier of the control resource set corresponds to N candidate reference signals, and the above N is an integer greater than or equal to 1;
- a determining unit configured to use any one of the N candidate reference signals as the transmission state identifier of the control resource set
- the receiving unit is configured to receive the first downlink control information from the control resource set according to the transmission status identifier of the control resource set.
- the foregoing first indication information is transmitted in a unicast or multicast manner.
- the determining unit is specifically configured to use the first reference signal among the N candidate reference signals as the transmission status identifier of the control resource set at the first moment;
- the determining unit is further configured to use the second reference signal among the N candidate reference signals as the transmission status identifier of the control resource set at the second moment; the first reference signal and the second reference signal are the N candidate reference signals different signals in the reference signal;
- the receiving unit is further configured to receive second downlink control information from the control resource set according to the transmission status identifier of the control resource set.
- the above-mentioned determining unit is specifically configured to use the reference signal with the best signal quality among the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set; or,
- the determining unit is specifically configured to use one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
- the determining unit is specifically configured to select any candidate reference signal as the transmission state identifier of the control resource set when the signal qualities of the N candidate reference signals are all lower than the second threshold.
- the receiving unit is further configured to receive the second indication information sent by the network device, the second indication information indicates that the transmission status identifier of the control resource set corresponds to K candidate reference signals, and the K is An integer greater than or equal to 1, the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
- the user equipment further includes a sending unit, configured to send third indication information to the network device when the signal qualities of the N candidate reference signals are all lower than a third threshold;
- the three indication information indicate that the signal quality of the N candidate reference signals is lower than the threshold.
- the determining unit is further configured to, when the user equipment simultaneously receives the fourth indication information sent by the network device in a multicast manner and the fifth indication information sent in a unicast manner,
- the reference signal indicated by the fifth indication information is used as the transmission status identifier of the control resource set;
- the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals;
- the fifth indication information The transmission status identifier indicating the above-mentioned control resource set corresponds to a reference signal.
- the embodiment of the present application discloses a network device, including:
- a generating unit configured to generate first indication information
- a sending unit configured to send first indication information to the user equipment, where the first indication information indicates that the transmission status identifier of the control resource set corresponds to N candidate reference signals; any signal in the above N candidate signals can be used by the user equipment to receive
- the first downlink control information the above N is an integer greater than or equal to 1;
- the sending unit is further configured to send the first downlink control information to the user equipment.
- the foregoing first indication information is transmitted in a unicast or multicast manner.
- the sending unit is further configured to send second indication information to the user equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals; the above K is greater than or an integer equal to 1; the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
- the network device further includes a receiving unit, configured to receive third indication information sent by the user equipment, where the third indication information indicates that the signal quality of the N candidate reference signals is lower than a threshold.
- the third indication information includes Y signals of good signal quality for receiving downlink control information in the serving cell where the user equipment is currently located, and the above Y is an integer greater than or equal to 1.
- the embodiment of the present application discloses a user equipment, including: a processor and a transceiver;
- the above-mentioned transceiver is used to receive signals or send signals; the above-mentioned processor is used to execute computer-executable instructions stored in the memory, so that the above-mentioned user equipment executes the first aspect or any one of the possible implementation manners of the first aspect. Methods.
- the embodiment of the present application discloses a network device, including: a processor and a transceiver;
- the above-mentioned transceiver is used to receive signals or send signals; the above-mentioned processor is used to execute computer-executable instructions stored in the memory, so that the above-mentioned network device executes the second aspect or any one of the possible implementation manners of the second aspect. Methods.
- the embodiment of the present application discloses a computer-readable storage medium, in which a computer program is stored in the above-mentioned computer-readable storage medium, and when the above-mentioned computer program is run on one or more processors, the Or the method in any possible implementation manner of the first aspect is executed; or, when the above-mentioned computer program is run on one or more processors, the second aspect or any one of the possible implementations of the second aspect The methods of the embodiments are carried out.
- the embodiment of the present application provides a computer program product, the above-mentioned computer program product includes program instructions, and when the above-mentioned program instructions are executed by the processor, the above-mentioned processor executes any one of the first aspect or the first aspect.
- FIG. 1 is a beam diagram provided by an embodiment of the present application.
- Fig. 2 is the schematic diagram of the format of a kind of MAC CE that the embodiment of the present application provides;
- FIG. 3 is a schematic diagram of a scenario provided by an embodiment of the present application.
- FIG. 4 is a schematic diagram of another scenario provided by the embodiment of the present application.
- FIG. 5 is a schematic flowchart of a method for receiving downlink control information provided in an embodiment of the present application
- FIG. 6 is a schematic structural diagram of a user equipment provided in an embodiment of the present application.
- FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present application.
- FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
- FIG. 9 is a schematic structural diagram of another user equipment provided by an embodiment of the present application.
- a channel is a signal channel based on a transmission medium, and different types of information need to be processed differently.
- the source information of the transmitting end is first processed by the network layer, data link layer, and physical layer, and then transmitted to the receiving end through the wireless environment. Finally, the entire processing process of the physical layer, data link layer, and network layer is the channel.
- channels are divided into logical channels, transport channels and physical channels.
- the physical channel is the channel through which the physical layer actually transmits information
- the transport channel is the channel between the physical layer and the medium access control (MAC) sublayer
- the logical channel is the MAC sublayer and the radio link control sublayer (radio link control, RLC) between channels.
- each channel can be divided into multiple types of channels.
- physical channels can be divided into uplink channels and downlink channels.
- the uplink channel includes a physical uplink shared channel (physical uplink shared channel, PUSCH) and the like.
- the downlink channel includes a physical downlink control channel (physical downlink control channel, PDCCH) and a physical downlink shared channel (physical downlink shared channel, PDSCH). in:
- the PDSCH carries user downlink service data and provides services for user equipment (user equipment, UE).
- user equipment user equipment, UE
- PDCCH is used to transmit the control information of resource allocation of user data, that is, PDCCH carries downlink control information (DCI), and DCI mainly includes PDSCH and PUSCH transmission resource scheduling information, uplink power control indication and time slot format indication, etc.
- DCI downlink control information
- PDCCH dynamically sends downlink control information to user equipment, and user equipment knows when (time domain) where (frequency domain) and how to demodulate PDSCH by reading the downlink control information, and when, where and how to assemble And send PUSCH data.
- bandwidth part bandwidth part (bandwidth part, BWP)
- LTE long term evolution
- the maximum transmission bandwidth is 20MHz.
- LTE can support multiple working bandwidths, such as 5MHz, 10MHz, and 20MHz.
- the user equipment needs to support the maximum transmission bandwidth (ie 20 MHz).
- the maximum transmission bandwidth supported by the new wireless system is 400MHz. If the user equipment adopts the LTE method, that is, each user equipment supports the maximum transmission bandwidth (ie 400MHz), the radio frequency requirements of the user equipment are too high, and it is difficult to realize chip integration. , and the cost is high.
- bandwidth adaptation bandwidth adaptation, BA
- BA bandwidth adaptation
- Control resource set (CORESET) and search space (search space)
- the PDCCH occupies the entire frequency band of the serving cell in the frequency domain, and occupies the first 1 to 3 orthogonal frequency division multiplexing (OFDM) symbols of each subframe in the time domain. That is to say, the LTE system only needs to notify the user equipment of the number of OFDM symbols occupied by the PDCCH, and the user equipment can determine the search space of the PDCCH.
- OFDM orthogonal frequency division multiplexing
- the PDCCH does not occupy the entire bandwidth in the frequency domain; in addition, in order to increase the flexibility of the system, the To adapt to different scenarios, the starting position of the PDCCH in the time domain can also be configured. That is to say, the user equipment must know the position of the PDCCH in the frequency domain and the position in the time domain in order to further demodulate the PDCCH.
- the new wireless system encapsulates information such as the frequency band occupied by the PDCCH in the frequency domain and the number of OFDM symbols occupied in the time domain in the control resource set; information such as the initial OFDM symbol number of the PDCCH and the PDCCH monitoring period are encapsulated in the search space. in:
- the control resource set is a group of physical resources in a specific area in the downlink resource grid, and is used to bear the PDCCH.
- the control resource set corresponds to the search space through parameter configuration.
- the control resource set includes a field CORESET ID, which is used to correspond to the search space.
- the search space is divided into common search space (common search space, CSS) and user equipment specific search space (user equipment specific search space, USS).
- common search space is mainly used when the user equipment accesses a cell and performs cell handover.
- the common search space is also used for paging and DCI transmission corresponding to system information, while the user equipment specific search space is used after the user equipment accesses .
- the search space of type 0-PDCCH in the public search space is used for system information block 1 (system information block 1, SIB1) scheduling.
- control resource set can correspond to multiple search spaces, but one search space can only correspond to one control resource set.
- the user equipment can determine the specific location of the PDCCH in the time-frequency domain.
- FIG. 1 is a beam diagram provided by an embodiment of the present application. For a cell composed of multiple beams (beam 1 to beam 8 shown in FIG. 1 ), due to hardware limitations, all beams cannot transmit at the same time.
- the new wireless system adopts beam forming (beam forming) transmission to increase the coverage distance of wireless signals.
- beam forming beam forming
- the new wireless system uses beam sweeping to cover the service area of the entire cell. Beam scanning means that at different times, beams in different directions are used to send physical channels or reference signals, thereby realizing time-sharing transmission of different beams.
- Synchronization signal block (SSB)
- the synchronization signal is transmitted according to a certain period (such as 20ms, 40ms or 80ms, etc.) with a duration of 5ms.
- the synchronization signal includes a primary synchronization signal (primary synchronization signal, PSS) and a secondary synchronization signal (secondary synchronization signal, SSS).
- the synchronization signal block (synchronization signal block, SSB) is the smallest synchronization unit.
- the base station can flexibly configure the number of synchronization signal blocks and their positions in the time domain and frequency domain according to transmission requirements.
- one cell may transmit one or more synchronization signal blocks (ie different beams).
- cell A transmits 4 synchronization signal blocks SSB, namely SSB0, SSB1, SSB2 and SSB3;
- cell B transmits 8 synchronization signal blocks, namely SSB0 to SSB7.
- the user equipment can determine the index of the synchronization signal block by detecting the demodulation reference signal (DM-RS) of the physical broadcast channel.
- DM-RS demodulation reference signal
- the synchronization signal block includes a primary synchronization signal, a secondary synchronization signal and a physical broadcast channel (PBCH).
- PBCH physical broadcast channel
- the primary synchronization signal and the secondary synchronization signal are used to enable the user equipment to identify the cell identity and enable the user equipment to obtain symbol-level synchronization.
- the PBCH carries system parameters of the radio resource control (RRC) layer, other important parameters required to complete frame synchronization, and parameters required to further decode other physical channels.
- RRC radio resource control
- the PBCH includes a master information block (master information block, MIB).
- the main information block includes the field pdcch-configSIB1, which configures the parameters required for decoding the PDCCH corresponding to the system information block 1 (SIB1).
- the base station can configure the user equipment to detect its own DCI according to its own radio network temporary identifier (RNTI) in one or more control resource sets.
- RNTI radio network temporary identifier
- the base station can configure the user equipment to detect one or more search spaces in the control resource set on the carrier, and detect (For example, blind detection) belongs to its own DCI, and then receive data or upload data according to the DCI.
- a user equipment may have one or more radio network temporary identifiers RNTI.
- the user equipment needs to first obtain the transmission status indicator (TCI (transmission configuration indicator) status indicator) of the control resource set when detecting the DCI.
- TCI transmission configuration indicator
- the user equipment can detect DCI located in the common search space and the user equipment specific search space through different detection periods. That is, the user equipment may not need to detect the DCI scrambled by a certain RNTI on a certain search space in every time slot, and the network may configure the user equipment to detect the DCI on a certain search space periodically.
- the number of potential DCIs that the user equipment needs to detect may be one or more, so each search space may be represented by a search space set.
- the maximum number of control resource sets that can be configured on an active bandwidth part can be 3; the maximum number of search space sets can be 10. Therefore, there can be more than 3 search space sets in one control resource set.
- system information block 1 (that is, SIB1) is carried by PDSCH, so the user equipment needs to know the scheduling information of PDSCH to receive or decode SIB1, that is, the user equipment needs to monitor and detect the PDCCH carrying PDSCH scheduling information (which can be understood as the PDCCH corresponding to SIB1 ).
- the PDCCH search space corresponding to SIB1 is a common search space, its type is type 0-PDCCH CSS, and its associated control resource set is CORESET 0.
- CORESET 0 can be understood as the first control resource set, and its information is part of the configuration information of the initial bandwidth part.
- the PBCH in the synchronization signal block includes a master information block (master information block, MIB), and the MIB encapsulates the necessary resources for initial access.
- the MIB includes the field pdcch-configSIB1, which is configured to decode the data of the PDCCH corresponding to SIB1: CORESET 0 and Type 0-PDCCH CSS.
- the process of user equipment accessing a cell and establishing an RRC connection includes:
- the user equipment obtains system information from the initial bandwidth part of the cell, that is, the user equipment detects the synchronization signal block of the cell located on the initial bandwidth part.
- the sync signal block includes a primary sync signal, a secondary sync signal, and a physical broadcast channel.
- the physical broadcast channel bears the MIB
- the MIB includes the configuration information of the control resource set for the user equipment to detect the SIB1, that is, CORESET 0.
- the user equipment can obtain the search space for detecting SIB1 through CORESET 0, that is, Type0-PDCCH CSS, and the search space is mapped to CORESET 0. Further, the user equipment can obtain other information through SIB1, such as random access configuration, public PDSCH configuration, wireless network identifier and so on. SIB1 can configure the control resource set (such as CORESET 1) for user equipment to receive paging messages and random access responses, as well as the search space set for paging messages mapped to CORESET 1 and the search space set for random access. If CORESET 1 of paging message and random access response is not configured in SIB1, the user equipment can detect the control resource set corresponding to SIB1 to obtain the above information.
- SIB1 can configure the control resource set (such as CORESET 1) for user equipment to receive paging messages and random access responses, as well as the search space set for paging messages mapped to CORESET 1 and the search space set for random access. If CORESET 1 of paging message and random access response is not configured in SI
- the user equipment When the user equipment needs to establish an RRC connection, it may select a synchronization signal block whose signal power detected by the cell exceeds a threshold. For example, the cell has synchronization signal blocks SSB0 to SSB7. The user equipment finds that there are SSB4 and SSB5 in the synchronization signal blocks exceeding the threshold in this cell, then the user equipment can select SSB5.
- the user equipment determines the random access resource corresponding to the SSB5 according to the system information and initiates a random access procedure.
- the user equipment uses SSB5 as the transmission status identifier of CORESET 0 or CORESET 1 (CORESET 1 network may not be configured).
- CORESET 0 and SSB5 are Gaussian co-location (Quasi co-location, QCL), that is, some channel evaluation information obtained by the user equipment by detecting SSB5, such as delay spread, Doppler frequency shift, etc., can be used On receiving CORESET 0.
- the user equipment receives the random access response according to the search space set configured for random access in the system message. Then, the uplink grant is further obtained through the random access response, and a radio resource control RRC request is sent to the base station.
- QCL Gaussian co-location
- the base station After receiving the request, the base station allocates resources for the user equipment, and sends RRC establishment to the user equipment. After receiving the RRC establishment, the user equipment uses the resources configured by the base station to send the RRC establishment completion to the base station. After that, the user equipment enters the RRC connection state.
- the interaction between the base station and the user equipment may include:
- the base station may configure other control resource sets and search spaces mapped on the other control resource sets based on the user equipment's capabilities and service requirements.
- the base station can switch the user equipment from the initial bandwidth part (initial BWP) to other bandwidth parts through the downlink control information.
- the base station may configure other bandwidth parts of the cell and control resource sets located on other bandwidth parts for the user equipment.
- the user equipment can obtain RRC information, so as to switch bandwidth parts, obtain multiple control resource set resources, and the like.
- the base station can modify the transmission state identifier of the control resource set by sending a specific MAC layer control element (MAC control element, MAC CE) to the user equipment.
- MAC control element MAC control element
- the base station may modify the transmission state identifier to be a specific channel state information-reference signal (CSI-RS), that is, the control resource set and the CSI-RS are Gaussian coexistence, and the user equipment receives the corresponding control resource set through the CSI-RS; or , the base station can modify the transmission state identifier to be a certain synchronization signal block, that is, the control resource set and the synchronization signal block are Gaussian coexistence, and the user equipment receives the corresponding control resource set through the synchronization signal block.
- CSI-RS channel state information-reference signal
- the base station modifies the transmission status identifier of the control resource set through the MAC CE, so that the user equipment can receive the control resource set resources through the correct reference signal (that is, use the channel evaluation information of the reference signal to assist in parsing the PDCCH on the control resource set), and then obtain to DCI.
- FIG. 2 is a schematic diagram of a format of a MAC CE provided by the embodiment of the present application.
- the MAC CE can use two bytes (octet, Oct) to indicate the serving cell identification (identification, ID), control resource set identification (CORESET ID) and transmission status identification.
- the base station can establish a data radio bearer with the user equipment, so that the user equipment can carry out services.
- New wireless systems introduce a multicast mechanism.
- the user equipment receiving the multicast needs to be in the RRC connection state.
- the user equipments can learn from the system information of the cell that the cell supports multicast services, so the user equipments can indicate to the serving cell that they expect to carry out multicast services.
- the base station configures the user equipments participating in the multicast to receive the common search space mapped on the same control resource set, receive the DCI from the common search space, and thereby receive the multicast data indicated by the DCI.
- the control resource set is represented by CORESET X, where X can be an integer greater than or equal to 1.
- the base station needs to send MAC CE to each user equipment that needs to modify the transmission status identifier to modify the transmission of CORESET X Status ID.
- the user equipment can learn the reference signal (such as a certain SSB or CSI-RS) that Gaussianly coexists with the modified control resource set when receiving DCI from the modified control resource set.
- the base station needs to send a MAC CE to each user equipment that needs to modify the transmission status identifier to modify the transmission status identifier of CORESET X, so that the user equipment knows the reference signal that controls the resource set Gaussian coexistence QCL, so that the user equipment can pass this signal Receive the control resource set, and then receive the correct DCI.
- FIG. 3 is a schematic diagram of a scenario provided by an embodiment of the present application.
- the cell has 8 synchronization signal blocks, taking SSB1 to SSB8 as an example.
- the cell supports a multicast service, and the cell configures a control resource set for receiving the multicast service and a search space mapped to the control resource set for the user equipment.
- control resource set is recorded as CORESET X
- transmission status indication of CORESET X to the synchronization signal block is taken as an example for illustration. That is to say, from the perspective of user equipment, CORESET X and a synchronization signal block are Gaussian coexistence, that is, user equipment can receive CORESET X by detecting the signal block to obtain information, and then receive downlink control information.
- user equipment 1 is located in the area served by SSB3, and user equipment 2 is located in the area served by SSB4.
- user equipment 1 moves from the area served by SSB3 to the area served by SSB6, and user equipment 1 will report the change of the synchronization signal block measured by itself to the cell;
- user equipment 2 moves from the area served by SSB4 to SSB5 In the served area, the user equipment 2 will also report the change of the synchronization signal block measured by itself to the cell.
- the base station can adjust the synchronization signal block corresponding to the multicast service according to the synchronization signal block measured by different user equipment, that is, determine in The beams where the synchronization signal blocks are located send multicast services.
- the cell uses SSB1 to SSB4 as the CORESET X Gaussian coexistence beam to serve the user equipment receiving the multicast service in the cell, that is, the user equipment can use any reference signal from SSB1 to SSB4 as the CORESET X Gaussian coexistence signal to receive DCI for multicast service.
- CORESET X needs to use any reference signal from SSB5 to SSB8 as a Gaussian coexistence beam to serve the user equipment receiving multicast services inside the cell.
- FIG. 4 is a schematic diagram of another scenario provided by an embodiment of the present application.
- the base station sends a MAC CE to user equipment 1, instructing user equipment 1 to receive DCI for multicast services through SSB6 (that is, CORESET X uses SSB6 as the transmission status identifier); as shown in part 402 in Figure 4
- the base station sends a MAC CE to user equipment 2, instructing user equipment 2 to receive DCI for multicast service through SSB5, so that user equipment 1 and user equipment 2 can receive and carry out multicast services by detecting the correct synchronization signal block after the location changes. DCI of the broadcast service.
- a serving cell may serve dozens or hundreds of user equipments to receive multicast data, and updating the state of the control resource set through the above method will cause a huge resource overhead.
- the embodiment of the present application provides a method for receiving downlink control information.
- the above method for receiving downlink control information can be applied to user equipment.
- the user equipment needs to update the reference signal for receiving downlink control information, it automatically selects the signal with better signal quality among the multiple reference signals for receiving downlink control information sent by the network device to receive the downlink control information, thereby reducing the number of receiving downlink control information.
- Resource overhead in the information process e.g., an embodiment of the present application provides a method for sending a signal, and the above method for sending a signal can be applied to a network device. For ease of understanding, the above two methods will be explained in combination next.
- FIG. 5 is a schematic flowchart of a method for receiving downlink control information provided in an embodiment of the present application. As shown in Figure 5, the method for receiving the downlink control information includes:
- the user equipment receives first indication information sent by the network device, where the indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1.
- the first indication information can be understood as information indicating a plurality of reference signals for receiving downlink control information, that is, indicating that the control resource set (which can be understood as CORESET X in the foregoing) and N candidate reference signals are Gaussian coexistence QCL , because the N candidate reference signals are not sent by the serving cell at the same time, so the control resource set is Gaussianly co-existing with the N candidate reference signals in different time periods.
- the first indication information sent by the network device may indicate multiple reference signals, and any signal in the multiple reference signals may be used for the user equipment to receive downlink control information.
- the first indication information may indicate a synchronization signal block (SSB) or a CSI-RS.
- SSB synchronization signal block
- the first indication information indicates three synchronization signal blocks: SSB1, SSB2, and SSB3, and the user equipment can use any of the synchronization signal blocks to receive downlink control information, as long as the signal quality of the SSB detected by the user equipment exceeds the threshold .
- the threshold can be understood as a value to measure the quality of the signal. Understandably, the threshold may be adjusted according to actual conditions, which is not limited in the present application.
- the first indication information may indicate that the transmission state identifier of the control resource set corresponds to identification information of N candidate reference signals.
- the first indication information may include identification information (SSB index) of SSB1, SSB2, and SSB3.
- the network device generates first indication information, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1. Then, the network device sends the first indication information to the user equipment; correspondingly, the user equipment receives the first indication information sent by the network device.
- the user equipment may receive the first indication information sent by the network device. For example, after the user equipment indicates to its serving cell that it expects to carry out the multicast service, the user equipment needs to receive the downlink control information corresponding to the multicast service (that is, schedule the transmission of the multicast service through the downlink control information) to receive the multicast data ; Therefore, before receiving the downlink control information corresponding to the multicast service, the user equipment receives the first indication information sent by the network equipment.
- the first indication information is transmitted in a unicast or multicast manner.
- the user equipment may be carrying out unicast (unicast) service, and the network device may send the first indication information to the user equipment in unicast mode, that is, send the first indication information to the user equipment separately through dedicated signaling.
- the device sends first indication information. If the downlink control information scrambled by the cell wireless network temporary identifier C-RNTI of the user equipment is used to transmit the first indication information, the first indication information is MAC CE, carried on the PDSCH, and the downlink control information indicates the PDSCH carrying the MAC CE The location of the frequency resource.
- the network device can send the first indication information to the (multiple) user equipment in a multicast manner, and can send the second indication information by scheduling the downlink control information of the multicast service (scrambled with G-RNTI).
- One indication information, the first indication information is located on the PDSCH time-frequency resource where the multicast service is located at this time, and the network device simultaneously transmits the multicast data and the first indication information in a multiplexing manner.
- the user equipment uses any one of the N candidate reference signals as a transmission state identifier of the control resource set.
- Any reference signal among the N candidate reference signals may be understood as a signal capable of enabling a certain user equipment to receive the first downlink control information. It is just that for different user equipments, the user equipments are actually located in different beam coverage areas of the serving cells where the user equipments are located, and the signal quality of the N candidate reference signals measured by the user equipments may be different.
- the user equipment receives the first downlink control information according to a reference signal with better signal quality among the N candidate reference signals.
- the user equipment can perform signal quality detection on the N candidate reference signals in the serving cell where it is currently located, and the user equipment uses the reference signal with better signal quality to receive the first downlink control information, that is, according to the signal quality
- the channel estimation information of the reference signal is used to receive the control resource set, and then receive the first downlink control information in the search space mapped on the control resource set.
- the above signal quality can be determined by reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ) and signal to interference plus noise ratio (signal to interference plus noise ratio, SINR ), etc., which are not limited in this application.
- reference signal receiving power reference signal receiving power
- RSRQ reference signal receiving quality
- SINR signal to interference plus noise ratio
- the reference signals whose signal quality exceeds the threshold can be understood as signals with better signal quality.
- the first indication information indicates that the transmission state identifier of the control resource set corresponds to five candidate reference signals: candidate reference signal A, candidate reference signal B, candidate reference signal C, candidate reference signal D, and candidate reference signal E;
- candidate reference signal A cannot be detected, and among other candidate reference signals, the signal quality of candidate reference signal D is lower than the threshold; thus, candidate reference signal B, candidate reference signal C and candidate reference signal E can be understood It is a reference signal with better signal quality. Therefore, the user equipment selects any signal from the candidate reference signal B, the candidate reference signal C and the candidate reference signal E to receive the downlink control information.
- the user equipment may select the signal with the best signal quality among the above N candidate reference signals to receive the first downlink control information, that is, it considers that the transmission state identifier of the control resource set corresponds to the reference signal with the best signal quality, and uses the reference signal The signal receives the first downlink control information transmitted on the control resource set.
- the user equipment receives first downlink control information from the control resource set according to the transmission state identifier of the control resource set.
- the user equipment receives first downlink control information according to a signal with better signal quality among the N candidate reference signals, including:
- the user equipment receives the first downlink control information according to the signal quality of the M candidate reference signals that is better and included in the N candidate reference signals; the M candidate reference signals are signals in the serving cell where the user equipment is currently located,
- the M is an integer greater than or equal to 1.
- the user equipment can directly detect the signal of the serving cell where it is currently located to obtain M candidate reference signals; signal to receive downlink control information.
- the M candidate reference signals are signals that can be used to receive downlink control information in the current serving cell.
- the user equipment can directly detect signals that can be used to receive downlink control information in the current serving cell to obtain M candidate reference signals; And the signals included in the N candidate reference signals are used to receive downlink control information.
- the user equipment when the signal quality of the N candidate reference signals is lower than the threshold, the user equipment selects any one candidate reference signal as the transmission state identifier of the control resource set, and then according to the selected reference signal Channel assessment information, receive downlink control information on CORESET X.
- the above 502 that is, the user equipment uses any one of the N candidate reference signals as the transmission status identifier of the control resource set, includes:
- the user equipment uses the first reference signal among the N candidate reference signals as the transmission status identifier of the control resource set;
- the above method further includes: at a second moment, the user equipment uses the second reference signal among the N candidate reference signals as the transmission status identifier of the control resource set; the first reference signal and the second reference signal are the N Different signals in candidate reference signals;
- the user equipment receives second downlink control information from the control resource set according to the transmission state identifier of the control resource set.
- the user equipment uses different reference signals among the N candidate reference signals as the transmission state identifier of the control resource set CORESET X at different times.
- a user equipment can use one of the N candidate reference signals (which can be understood as the first reference signal) as the transmission state identifier of CORESET X at time 1 (which can be understood as the first time mentioned above), trying to Parse the downlink control information on CORESET X, but it may not be successful.
- the user equipment can use another reference signal among the N candidate reference signals (can be It is understood as the above-mentioned second reference signal) as the transmission status identifier of CORESET X, and the downlink control information on CORESET X is analyzed again. In this way, the success rate of analyzing downlink control information can be improved.
- the user equipment may receive downlink control information multiple times through the signals in the N candidate reference signals indicated by the first indication information.
- the network device updates a signal used by the current serving cell to receive downlink control information for carrying out multicast data. That is to say, after the above 502, that is, after the user equipment receives the first downlink control information according to any one of the N candidate reference signals, and then receives the corresponding data, the user equipment may also receive the network device again. Second instruction message.
- the user equipment receives the second indication information sent by the network equipment, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, where K is an integer greater than or equal to 1.
- the network device generates second indication information, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, where K is an integer greater than or equal to 1. Then, the network device sends the second indication information to the user equipment; correspondingly, the user equipment receives the second indication information sent by the network device.
- the K candidate reference signals are partly the same as or completely different from the aforementioned N candidate reference signals, which is not limited in the present application.
- the network device after the network device updates the current serving cell for receiving the downlink control information signal of the multicast data, the network device sends the second indication information to the user equipment, so that the user equipment can receive the downlink control information through a correct signal .
- the second indication information may be understood as information indicating multiple signals for receiving downlink control information. That is to say, the second indication information sent by the network device may indicate multiple signals, and any signal in the multiple signals may be used for the user equipment to receive downlink control information.
- the second indication information may indicate a synchronization signal block (SSB).
- the first indication information indicates three synchronization signal blocks: SSB3, SSB4 and SSB5, and the user equipment can use any one of the synchronization signal blocks to receive downlink control information, as long as the signal quality of the synchronization signal block detected by the user equipment is Threshold exceeded.
- the second indication information may include identification information of the N candidate reference signals.
- the first indication information includes identification information (SSB index) of SSB3, SSB4 and SSB5.
- the network device may send the second downlink control information to the user equipment.
- the second indication information is transmitted in a unicast or multicast manner.
- the third indication information may also include Y reference signals with better signal quality in the current serving cell measured by the user equipment, where Y is an integer greater than or equal to 1.
- the network device may reconfigure the reference signal for receiving the second downlink control information for the user equipment.
- the network device may reconfigure the signal used to receive the second downlink control information as any one of the Y signals, and then, the network device sends indication information to the user equipment to instruct the user equipment to select from the Y signals Select any signal to receive the corresponding downlink control information; or, the network device directly instructs the user equipment to use signal A to receive the corresponding downlink control information, and the signal A can be any signal in the Y signals or other Signal.
- the user equipment when the user equipment simultaneously receives the fourth indication information sent by the network device through multicast and the fifth indication information sent through unicast, uses the reference signal indicated by the fifth indication information As the transmission status identifier of the control resource set CORESET X; the fourth indication information indicates that the transmission status identification of the control resource set corresponds to two or more reference signals; the fifth indication information indicates the transmission status of the control resource set CORESET X The identification corresponds to a reference signal.
- the scenario where the user equipment receives multicast data by receiving downlink control information is taken as an example.
- the network equipment is configured so that the user equipment participating in the multicast receives the common search space mapped on the same control resource set, and receives the downlink control from the common search space. information, so as to receive the multicast data indicated by the downlink control information.
- the control resource set is represented by CORESET X.
- SSB Synchronization Signal Block
- CSI-RS CSI-RS
- the network device sends information (ie, the first indication information, etc.) to the user equipment through the MAC CE to inform the user equipment of the downlink control information signal for receiving multicast data.
- information ie, the first indication information, etc.
- the method for receiving downlink control information includes:
- the network device uniformly instructs the user equipment participating in the multicast to use SSB5, SSB6 and SSB7 to receive downlink control information.
- the MAC CE can be understood as the above first indication information; SSB5, SSB6 and SSB7 can be understood as the above N candidate reference signals.
- the network device may send the MAC CE to the user equipment participating in the multicast while transmitting the multicast service.
- the user equipment receiving multicast after obtaining the MAC CE, it can receive the downlink control information from the signals that intersect with SSB5, 6, and 7 among the strongest SSBs measured by itself.
- the user equipment may use the SSB with the best signal quality or the strongest power among the SSB5, SSB6 and SSB7 measured by itself to receive the downlink control information.
- the user equipment measures the highest signal strength of SSB6, and the user equipment receives downlink control information according to SSB6. Specifically, the user equipment detects some channel estimation information obtained by detecting SSB6, such as delay spread and Doppler frequency shift, etc., to receive CORESET X, receive downlink control information from the search space mapped to CORESET X, and then pass the downlink The frequency domain resources indicated by the control information receive multicast data.
- some channel estimation information obtained by detecting SSB6, such as delay spread and Doppler frequency shift, etc.
- the network device can reasonably set the MAC CE based on the measurement results of different user equipments, so as to ensure that the user equipments receiving the multicast can all determine to receive the downlink control information signal.
- the user equipment may indicate to the network equipment that the signal of the received downlink control information is lower than the threshold or needs to be updated. Specifically, the user equipment can report the strongest SSBs in one or more serving cells measured at this time to the network equipment, so that the network equipment can adjust the signal for receiving downlink control information, that is, adjust the transmission status identifier of CORESET X.
- FIG. 6 is a schematic structural diagram of a user equipment provided by an embodiment of the present application.
- the user equipment 60 includes a receiving unit 601, a determining unit 602, a receiving unit 603, and a sending unit 604.
- the description of each unit is as follows:
- the receiving unit 601 is configured to receive first indication information sent by the network device, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, and the above N is an integer greater than or equal to 1;
- a determining unit 602 configured to use any one of the N candidate reference signals as the transmission state identifier of the control resource set;
- the receiving unit 603 is configured to receive the first downlink control information from the control resource set according to the transmission status identifier of the control resource set.
- the above-mentioned first indication information is transmitted in a unicast or multicast manner.
- the determining unit 602 is specifically configured to use the first reference signal among the N candidate reference signals as the transmission state identifier of the control resource set at the first moment;
- the above-mentioned determining unit 602 is further configured to use the second reference signal among the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set at the second moment; the above-mentioned first reference signal and the above-mentioned second reference signal are the above-mentioned N different signals among the candidate reference signals;
- the receiving unit 603 is further configured to receive second downlink control information from the control resource set according to the transmission status identifier of the control resource set.
- the determining unit 602 is specifically configured to use the reference signal with the best signal quality among the N candidate reference signals as the transmission status identifier of the control resource set; or,
- the determining unit 602 is specifically configured to use one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
- the determining unit 602 is specifically configured to select any candidate reference signal as the transmission state identifier of the control resource set when the signal qualities of the N candidate reference signals are all lower than the second threshold.
- the receiving unit 603 is further configured to receive second indication information sent by the network device, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, and the above K is greater than or equal to is an integer of 1, and the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
- the user equipment further includes a sending unit 604, configured to send third indication information to the network equipment when the signal qualities of the N candidate reference signals are all lower than a third threshold; the third indication information It indicates that the signal quality of the above N candidate reference signals is lower than the threshold.
- a sending unit 604 configured to send third indication information to the network equipment when the signal qualities of the N candidate reference signals are all lower than a third threshold; the third indication information It indicates that the signal quality of the above N candidate reference signals is lower than the threshold.
- the determining unit 602 is further configured to: when the user equipment receives the fourth indication information sent by the network device in multicast mode and the fifth indication information sent in unicast mode at the same time, the above-mentioned first The reference signal indicated by the fifth indication information is used as the transmission status identifier of the control resource set; the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals; the fourth indication information indicates that the control resource set The transmission state identifier of the resource set corresponds to a reference signal.
- FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present application.
- the above-mentioned network device 70 includes a generating unit 701, a sending unit 702, and a receiving unit 703.
- the description of each unit is as follows:
- the sending unit 702 is configured to send first indication information to the user equipment, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals; any signal in the above N candidate reference signals can be used for the above user
- the device receives the first downlink control information, and the above N is an integer greater than or equal to 1;
- the sending unit 702 is further configured to send the first downlink control information to the user equipment.
- the above-mentioned first indication information is transmitted in a unicast or multicast manner.
- the sending unit 702 is further configured to send second indication information to the user equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals; the above K is greater than or equal to 1 is an integer; the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
- the network device further includes a receiving unit 703, configured to receive third indication information sent by the user equipment, where the third indication information indicates that the signal quality of the N candidate reference signals is lower than a threshold.
- the third indication information includes Y reference signals with better signal quality in the serving cell where the user equipment is currently located, where Y is an integer greater than or equal to 1.
- FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
- the communication device 80 shown in FIG. 8 may be the above-mentioned user equipment 60 or the above-mentioned network device 70 .
- the communication device 80 includes at least one processor 802, configured to implement the functions of the user equipment in the method provided in the embodiment of the present application; or, configured to implement the function of the network device in the method provided in the embodiment of the present application.
- the communication device 80 may also include a transceiver 801 .
- the transceiver 801 is used to communicate with other devices/devices via transmission media.
- the processor 802 uses the transceiver 801 to send and receive data and/or signaling, and is used to implement the methods in the foregoing method embodiments.
- the communication device 80 may further include at least one memory 803 for storing program instructions and/or data.
- the memory 803 is coupled to the processor 802 .
- the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
- Processor 802 may cooperate with memory 803 .
- Processor 802 may execute program instructions stored in memory 803 . At least one of the at least one memory may be included in the processor.
- a specific connection medium among the transceiver 801, the processor 802, and the memory 803 is not limited.
- the memory 803, the processor 802, and the transceiver 801 are connected through a bus 804.
- the bus is represented by a thick line in FIG. 8, and the connection mode between other components is only for schematic illustration. , is not limited.
- the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 8 , but it does not mean that there is only one bus or one type of bus.
- the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
- a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
- the communication device 80 when the communication device 80 is the above-mentioned user equipment 60, functions of the receiving unit 601, the determining unit 602, the receiving unit 603, and the sending unit 604 are realized. Alternatively, when the communication device 80 is the above-mentioned network device 70 , functions of the generating unit 701 , the sending unit 702 and the receiving unit 703 are implemented.
- FIG. 9 is a schematic structural diagram of another user equipment provided by an embodiment of the present application.
- the user equipment 90 above includes a receiving unit 901, a determining unit 902, and a sending unit 903.
- the description of each unit is as follows:
- the receiving unit 901 is configured to receive first indication information sent by the network device, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1;
- a determining unit 902 configured to use any one of the N candidate reference signals as the transmission state identifier of the control resource set;
- the receiving unit 901 is further configured to receive first downlink control information from the control resource set according to the transmission status identifier of the control resource set.
- the above-mentioned first indication information is transmitted in a unicast or multicast manner.
- the determining unit 902 is specifically configured to use the first reference signal among the N candidate reference signals as the transmission state identifier of the control resource set at the first moment;
- the above-mentioned determining unit 902 is further configured to use the second reference signal among the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set at the second moment; the above-mentioned first reference signal and the above-mentioned second reference signal are the above-mentioned N different signals among the candidate reference signals;
- the receiving unit 901 is further configured to receive second downlink control information from the control resource set according to the transmission status identifier of the control resource set.
- the determining unit 902 is specifically configured to use the reference signal with the best signal quality among the N candidate reference signals as the transmission status identifier of the control resource set; or,
- the determining unit 902 is specifically configured to use one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
- the determining unit 902 is specifically configured to select any candidate reference signal as the transmission status identifier of the control resource set when the signal qualities of the N candidate reference signals are all lower than the second threshold.
- the receiving unit 901 is further configured to receive second indication information sent by the network device, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, and the above K is greater than or equal to is an integer of 1, and the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
- the user equipment further includes a sending unit 903, configured to send third indication information to the network equipment when the signal qualities of the N candidate reference signals are all lower than a third threshold; the third indication information It indicates that the signal quality of the above N candidate reference signals is lower than the threshold.
- a sending unit 903 configured to send third indication information to the network equipment when the signal qualities of the N candidate reference signals are all lower than a third threshold; the third indication information It indicates that the signal quality of the above N candidate reference signals is lower than the threshold.
- the determining unit 902 is further configured to, when the user equipment receives the fourth indication information sent by the network device in multicast mode and the fifth indication information sent in unicast mode at the same time, use the above-mentioned first
- the reference signal indicated by the fifth indication information is used as the transmission status identifier of the control resource set;
- the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals;
- the fourth indication information indicates that the control resource set The transmission state identifier of the resource set corresponds to a reference signal.
- the present application also provides a computer-readable storage medium, where computer codes are stored in the computer-readable storage medium, and when the computer codes are run on the computer, the computer is made to execute the methods of the above-mentioned embodiments.
- the present application also provides a computer program product, the computer program product includes computer code or computer program, and when the computer code or computer program is run on a computer, the methods in the above embodiments are executed.
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Abstract
Embodiments of the present application provide a method for receiving downlink control information, a method for sending information, and a related apparatus. The method for receiving downlink control information comprises: a user equipment receives first indication information sent by a network device, the first indication information indicating that a transmission state identifier of a control resource set corresponds to N candidate reference signals, wherein N is an integer greater than or equal to 1; the user equipment uses any one of the N candidate reference signals as the transmission state identifier of the control resource set; and the user equipment receives first downlink control information from the control resource set according to the transmission state identifier of the control resource set. In the method provided in the embodiments of the present application, the user equipment receives N candidate reference signals indicated by the first indication information sent by the network device, and then selects any one of the reference signals as the transmission state identifier of the control resource set, thereby receiving downlink control information, and achieving the purpose of reducing resource overhead for receiving the downlink control information.
Description
本申请实施例涉及通信技术领域,具体涉及下行控制信息的接收方法、信息的发送方法及相关装置。The embodiments of the present application relate to the field of communication technologies, and specifically relate to methods for receiving downlink control information, methods for sending information, and related devices.
新无线***(new radio,NR)引入了多播机制(point to multicast,PTM)。为了采用多播机制传输高可靠性的数据,接收多播的用户设备需要处于无线资源控制(radio resource control,RRC)连接态。The new radio system (new radio, NR) introduces a multicast mechanism (point to multicast, PTM). In order to transmit highly reliable data using the multicast mechanism, the user equipment receiving the multicast needs to be in a radio resource control (radio resource control, RRC) connected state.
用户设备接入服务小区并且建立RRC连接之后,需要从该服务小区中开展多播业务的控制资源集(control resource set,CORESET)的公共搜索空间(common search space,CSS)接收下行控制信息(downlink control information,DCI),从而接收由该下行控制信息指示的多播数据。After the user equipment accesses the serving cell and establishes an RRC connection, it needs to receive downlink control information (downlink control information, DCI), so as to receive the multicast data indicated by the downlink control information.
如何通过更少的资源开销来接收下行控制信息是本领域研究员不断努力的方向。How to receive downlink control information with less resource overhead is a direction that researchers in this field are constantly working on.
发明内容Contents of the invention
本申请实施例提供了下行控制信息的接收方法、信息的发送方法及相关装置,旨在减少接收下行控制信息的资源开销。Embodiments of the present application provide a method for receiving downlink control information, a method for sending information, and related devices, aiming at reducing resource overhead for receiving downlink control information.
第一方面,本申请实施例公开了一种下行控制信息的接收方法,上述方法包括:In the first aspect, the embodiment of the present application discloses a method for receiving downlink control information, the method includes:
用户设备接收网络设备发送的第一指示信息,上述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号,上述N为大于或等于1的整数;The user equipment receives the first indication information sent by the network device, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, and the above N is an integer greater than or equal to 1;
上述用户设备以上述N个候选参考信号中任一个参考信号作为上述控制资源集的传输状态标识;The user equipment uses any one of the N candidate reference signals as the transmission state identifier of the control resource set;
上述用户设备根据上述控制资源集的传输状态标识从上述控制资源集接收第一下行控制信息。The user equipment receives first downlink control information from the control resource set according to the transmission state identifier of the control resource set.
本申请实施例提供的下行控制信息的接收方法可以应用于用户设备,上述用户设备可以理解为能够进行数据处理和网络通信的设备。示例性地,上述用户装置可以包括手机、便携笔记本或平板电脑等,本申请对此不作限定。The method for receiving downlink control information provided in the embodiment of the present application may be applied to user equipment, and the foregoing user equipment may be understood as a device capable of data processing and network communication. Exemplarily, the foregoing user device may include a mobile phone, a portable notebook, or a tablet computer, etc., which is not limited in the present application.
上述第一指示信息可以理解为指示一个或多个用于接收下行控制信息的参考信号的信息,即指示该控制资源集与N个候选参考信号是高斯共存QCL的。因为N个候选参考信号不是同时由服务小区发送的,因此该控制资源集是在不同的时间段分别与上述N个候选参考信号是高斯共存的。The foregoing first indication information may be understood as information indicating one or more reference signals used to receive downlink control information, that is, indicating that the control resource set and the N candidate reference signals are of Gaussian coexistence QCL. Since the N candidate reference signals are not sent by the serving cell at the same time, the control resource set is Gaussianly co-existing with the N candidate reference signals in different time periods.
上述N个候选参考信号中任一个参考信号可以理解为能够使某个用户设备接收到上述第一下行控制信息的信号,只是对于不同的用户设备来说,用户设备实际位于所在的服务小区的不同波束覆盖范围内,用户设备测得上述N个候选参考信号的信号强度可能不同。Any one of the above N candidate reference signals can be understood as a signal that enables a certain user equipment to receive the above-mentioned first downlink control information, but for different user equipments, the location where the user equipment is actually located in the serving cell In different beam coverage areas, the signal strengths of the above N candidate reference signals measured by the user equipment may be different.
本申请实施例提供的下行控制信息的接收方法,用户设备接收网络设备发送的第一指示信息,上述第一指示信息指示N个候选参考信号,上述N为大于或等于1的整数;在用户设备需要更新接收下行控制信息的信号时,自动选择上述N个候选参考信号中的任一参考信号作为控制资源集的传输状态标识,从而接收下行控制信息,达到减少接收下行控制信息的资源开销的目的。In the method for receiving downlink control information provided in the embodiment of the present application, the user equipment receives the first indication information sent by the network equipment, the first indication information indicates N candidate reference signals, and the above N is an integer greater than or equal to 1; in the user equipment When it is necessary to update the signal for receiving downlink control information, any one of the above N candidate reference signals is automatically selected as the transmission status identifier of the control resource set, so as to receive downlink control information and achieve the purpose of reducing the resource overhead of receiving downlink control information .
在一种可能的实现方式中,用户设备根据上述N个候选参考信号中的信号质量较好的信号接收第一下行控制信息。示例性地,用户设备可以在当前所在的服务小区对上述N个候选参考信号中的信号进行信号强度检测,用户设备利用其中信号质量较好的信号来接收第一下行控制信息。In a possible implementation manner, the user equipment receives the first downlink control information according to a signal with better signal quality among the N candidate reference signals. Exemplarily, the user equipment may perform signal strength detection on signals among the above N candidate reference signals in the serving cell where it is currently located, and the user equipment uses the signal with better signal quality among them to receive the first downlink control information.
可以理解地,上述N个候选中的除了信号质量低于或等于阈值以外的信号都可以被理解为信号质量较好的信号。It can be understood that all the signals among the above N candidates except that the signal quality is lower than or equal to the threshold can be understood as signals with better signal quality.
在一个可能的实现方式中,在上述N为1的情况下,上述第一指示信息通过多播的方式进行传输;在该N为大于或等于2的整数的情况下,上述第一指示信息通过单播或多播的方式进行传输。In a possible implementation, when the above-mentioned N is 1, the above-mentioned first indication information is transmitted through multicast; transmission by unicast or multicast.
在上述第一指示信息指示控制资源集的传输状态标识对应1个候选参考信号的情况下,上述第一指示信息通过多播的方式进行传输;在上述第一指示信息指示控制资源集的传输状态标识对应2个及以上候选参考信号的情况下,上述第一指示信息通过单播或多播的方式进行传输。相对于在需要更新接收下行控制信息的信号时,通过单播的方式向用户设备指示某个信号来接收下行控制信息,上述方式可以减少资源开销。In the case where the first indication information indicates that the transmission status identifier of the control resource set corresponds to one candidate reference signal, the first indication information is transmitted in a multicast manner; when the first indication information indicates the transmission status of the control resource set In a case where the identifier corresponds to two or more candidate reference signals, the above-mentioned first indication information is transmitted in a unicast or multicast manner. Compared with indicating a certain signal to the user equipment to receive downlink control information in a unicast manner when a signal for receiving downlink control information needs to be updated, the above method can reduce resource overhead.
在一个可能的实现方式中,上述用户设备以上述N个候选参考信号中任一个参考信号作为上述控制资源集的传输状态标识,包括:In a possible implementation manner, the above-mentioned user equipment uses any one of the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set, including:
在第一时刻,上述用户设备以上述N个候选参考信号中的第一参考信号作为上述控制资源集的传输状态标识;At the first moment, the user equipment uses the first reference signal among the N candidate reference signals as the transmission status identifier of the control resource set;
上述方法还包括:在第二时刻,上述用户设备以上述N个候选参考信号中的第二参考信号作为上述控制资源集的传输状态标识;上述第一参考信号与上述第二参考信号为上述N个候选参考信号中的不同信号;The above method further includes: at a second moment, the user equipment uses the second reference signal among the N candidate reference signals as the transmission status identifier of the control resource set; the first reference signal and the second reference signal are the N Different signals in candidate reference signals;
上述用户设备根据上述控制资源集的传输状态标识从上述控制资源集接收第二下行控制信息。The user equipment receives second downlink control information from the control resource set according to the transmission state identifier of the control resource set.
在一个可能的实现方式中,上述用户设备以上述N个候选参考信号中任一个参考信号作为上述控制资源集的传输状态标识,包括:In a possible implementation manner, the above-mentioned user equipment uses any one of the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set, including:
上述用户设备以上述N个候选参考信号中的信号质量最好的参考信号作为上述控制资源集的传输状态标识;或者,The user equipment uses the reference signal with the best signal quality among the N candidate reference signals as the transmission status identifier of the control resource set; or,
上述用户设备以上述N个候选参考信号中的信号质量超过第一阈值的一个参考信号作为上述控制资源集的传输状态标识;或者,The user equipment uses one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
在上述N个候选参考信号的信号质量均低于第二阈值的情况下,上述用户设备选择任一个候选参考信号作为上述控制资源集的传输状态标识。In a case where the signal qualities of the N candidate reference signals are all lower than the second threshold, the user equipment selects any one candidate reference signal as the transmission state identifier of the control resource set.
在一个可能的实现方式中,上述用户设备接收上述网络设备发送的第二指示信息,上述第二指示信息指示上述控制资源集的传输状态标识对应K个候选参考信号,上述K为大 于或等于1的整数,上述K个候选参考信号与上述N个候选参考信号部分相同或完全不同。In a possible implementation manner, the user equipment receives the second indication information sent by the network equipment, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, and the K is greater than or equal to 1 is an integer, the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
在一个可能的实现方式中,上述方法还包括:In a possible implementation, the above method also includes:
在上述N个候选参考信号的信号质量均低于第三阈值的情况下,上述用户设备向上述网络设备发送第三指示信息;上述第三指示信息指示上述N个候选参考信号的信号质量低于阈值。When the signal qualities of the N candidate reference signals are all lower than the third threshold, the user equipment sends third indication information to the network equipment; the third indication information indicates that the signal quality of the N candidate reference signals is lower than threshold.
在一个可能的实现方式中,上述第三指示信息包括上述用户设备当前所在服务小区中的用于接收下行控制信息且信号质量较好的Y个信号,上述Y为大于或等于1的整数。In a possible implementation manner, the third indication information includes Y signals of good signal quality for receiving downlink control information in the serving cell where the user equipment is currently located, and the above Y is an integer greater than or equal to 1.
在一个可能的实现方式中,上述方法还包括:In a possible implementation, the above method also includes:
在上述用户设备同时接收到上述网络设备通过多播方式发送的第四指示信息和通过单播方式发送的第五指示信息的情况下,上述用户设备以上述第五指示信息指示的参考信号作为上述控制资源集的传输状态标识;上述第四指示信息指示所述控制资源集的传输状态标识对应两个或两个以上参考信号;上述第五指示信息指示上述控制资源集的传输状态标识对应一个参考信号。When the user equipment receives the fourth indication information sent by the network device through multicast and the fifth indication information sent through unicast at the same time, the user equipment uses the reference signal indicated by the fifth indication information as the above-mentioned The transmission status identifier of the control resource set; the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals; the fifth indication information indicates that the transmission status identifier of the control resource set corresponds to one reference signal Signal.
在一个可能的实现方式中,上述用户设备根据上述N个候选参考信号中的信号质量较好的信号接收第一下行控制信息,包括:In a possible implementation, the user equipment receives the first downlink control information according to a signal with better signal quality among the N candidate reference signals, including:
上述用户设备根据上述N个候选参考信号中的信号质量最好的信号接收第一下行控制信息。The user equipment receives the first downlink control information according to the signal with the best signal quality among the N candidate reference signals.
在一个可能的实现方式中,上述用户设备根据上述N个候选参考信号中的信号质量较好的信号接收第一下行控制信息,包括:In a possible implementation, the user equipment receives the first downlink control information according to a signal with better signal quality among the N candidate reference signals, including:
上述用户设备根据M个候选参考信号中的信号质量较好且包含于上述N个候选参考信号的信号接收第一下行控制信息;上述M个候选参考信号为上述用户设备当前所在服务小区中的信号,上述M为大于或等于1的整数。The above user equipment receives the first downlink control information according to the signal quality of the M candidate reference signals that is better and included in the above N candidate reference signals; the above M candidate reference signals are the ones in the serving cell where the above user equipment is currently located signal, the above M is an integer greater than or equal to 1.
在上述实现方式中,用户设备直接对自身当前所在服务小区的信号进行检测,得到M个候选参考信号;然后,用户设备根据上述M个候选参考信号中的信号质量较好且包含于上述N个候选参考信号的信号来接收第一下行控制信息。In the above implementation manner, the user equipment directly detects the signal of the serving cell where it is currently located to obtain M candidate reference signals; The candidate reference signal is used to receive the first downlink control information.
在一个可能的实现方式中,上述M个候选参考信号为上述用户设备当前所在服务小区中用于接收下行控制信息的信号。In a possible implementation manner, the M candidate reference signals are signals for receiving downlink control information in a serving cell where the user equipment is currently located.
第二方面,本申请实施例公开了一种信息的发送方法,上述方法包括:In the second aspect, the embodiment of the present application discloses a method for sending information, and the method includes:
网络设备向用户设备发送第一指示信息,上述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号;上述N个候选信号中的任一信号可用于上述用户设备接收第一下行控制信息,上述N为大于或等于1的整数;The network device sends first indication information to the user equipment, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals; any signal in the above N candidate signals can be used by the user equipment to receive the first next Row control information, the above N is an integer greater than or equal to 1;
上述网络设备向上述用户设备发送上述第一下行控制信息。The foregoing network device sends the foregoing first downlink control information to the foregoing user equipment.
本申请实施例提供的信息的发送方法可以应用于网络设备,上述网络设备可以理解为能够进行数据处理和网络通信的设备。示例性地,上述网络设备可以包括基站或网络的接入设备等,本申请对此不作限定。The method for sending information provided in the embodiments of the present application can be applied to network devices, and the foregoing network devices can be understood as devices capable of data processing and network communication. Exemplarily, the foregoing network device may include a base station or a network access device, etc., which is not limited in this application.
本申请实施例提供的信息的发送方法,网络设备向用户发送第一指示信息,上述第一指示信息指示N个候选参考信号,上述N为大于或等于1的整数;由于上述N个候选信号 中的任一信号可用于用户设备接收第一下行控制信息,即用户设备能够通过N个候选参考信号中的任一信号接收上述第一下行控制信息,使得用户设备需要更新接收下行控制信息的信号时,自动选择上述N个候选参考信号中任一个参考信号作为控制资源集的传输状态标识,从而接收下行控制信息,达到减少接收下行控制信息的资源开销的目的;同时,减少网络设备发送用于用户设备接收下行控制信息的信号过程中的资源开销。In the information sending method provided by the embodiment of the present application, the network device sends the first indication information to the user, the first indication information indicates N candidate reference signals, and the above N is an integer greater than or equal to 1; since the above N candidate signals Any signal of can be used for the user equipment to receive the first downlink control information, that is, the user equipment can receive the above-mentioned first downlink control information through any signal in the N candidate reference signals, so that the user equipment needs to update the method of receiving the downlink control information When receiving a signal, any one of the above N candidate reference signals is automatically selected as the transmission status identifier of the control resource set, so as to receive downlink control information and achieve the purpose of reducing resource overhead for receiving downlink control information; Resource overhead in the process of receiving the downlink control information signal by the user equipment.
在一个可能的实现方式中,上述第一指示信息通过单播或多播的方式进行传输。In a possible implementation manner, the foregoing first indication information is transmitted in a unicast or multicast manner.
在一个可能的实现方式中,上述方法还包括:In a possible implementation, the above method also includes:
上述网络设备向上述用户设备发送第二指示信息,上述第二指示信息指示上述控制资源集的传输状态标识对应K个候选参考信号;上述K为大于或等于1的整数;上述K个候选参考信号与上述N个候选参考信号部分相同或完全不同。The network device sends second indication information to the user equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals; the above K is an integer greater than or equal to 1; the above K candidate reference signals Partially the same as or completely different from the above N candidate reference signals.
在一个可能的实现方式中,上述方法还包括:上述网络设备接收上述用户设备发送的第三指示信息,上述第三指示信息指示上述N个候选参考信号的信号质量低于阈值。In a possible implementation manner, the method further includes: the network device receiving third indication information sent by the user equipment, where the third indication information indicates that the signal quality of the N candidate reference signals is lower than a threshold.
在一个可能的实现方式中,上述第三指示信息包括上述用户设备当前所在服务小区中的用于接收下行控制信息且信号质量较好的Y个信号,上述Y为大于或等于1的整数。In a possible implementation manner, the third indication information includes Y signals of good signal quality for receiving downlink control information in the serving cell where the user equipment is currently located, and the above Y is an integer greater than or equal to 1.
第三方面,本申请实施例公开了一种用户设备,包括:In a third aspect, the embodiment of this application discloses a user equipment, including:
接收单元,用于接收网络设备发送的第一指示信息,上述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号,上述N为大于或等于1的整数;The receiving unit is configured to receive first indication information sent by the network device, where the first indication information indicates that the transmission status identifier of the control resource set corresponds to N candidate reference signals, and the above N is an integer greater than or equal to 1;
确定单元,用于以上述N个候选参考信号中任一个参考信号作为上述控制资源集的传输状态标识;A determining unit, configured to use any one of the N candidate reference signals as the transmission state identifier of the control resource set;
接收单元,用于根据上述控制资源集的传输状态标识从上述控制资源集接收第一下行控制信息。The receiving unit is configured to receive the first downlink control information from the control resource set according to the transmission status identifier of the control resource set.
在一个可能的实现方式中,上述第一指示信息通过单播或多播的方式进行传输。In a possible implementation manner, the foregoing first indication information is transmitted in a unicast or multicast manner.
在一个可能的实现方式中,上述确定单元,具体用于在第一时刻以上述N个候选参考信号中的第一参考信号作为上述控制资源集的传输状态标识;In a possible implementation manner, the determining unit is specifically configured to use the first reference signal among the N candidate reference signals as the transmission status identifier of the control resource set at the first moment;
上述确定单元,还用于在第二时刻以上述N个候选参考信号中的第二参考信号作为上述控制资源集的传输状态标识;上述第一参考信号与上述第二参考信号为上述N个候选参考信号中的不同信号;The determining unit is further configured to use the second reference signal among the N candidate reference signals as the transmission status identifier of the control resource set at the second moment; the first reference signal and the second reference signal are the N candidate reference signals different signals in the reference signal;
上述接收单元,还用于根据上述控制资源集的传输状态标识从上述控制资源集接收第二下行控制信息。The receiving unit is further configured to receive second downlink control information from the control resource set according to the transmission status identifier of the control resource set.
在一个可能的实现方式中,上述确定单元,具体用于以上述N个候选参考信号中的信号质量最好的参考信号作为上述控制资源集的传输状态标识;或者,In a possible implementation manner, the above-mentioned determining unit is specifically configured to use the reference signal with the best signal quality among the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set; or,
上述确定单元,具体用于以上述N个候选参考信号中的信号质量超过第一阈值的一个参考信号作为上述控制资源集的传输状态标识;或者,The determining unit is specifically configured to use one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
上述确定单元,具体用于在上述N个候选参考信号的信号质量均低于第二阈值的情况下,选择任一个候选参考信号作为上述控制资源集的传输状态标识。The determining unit is specifically configured to select any candidate reference signal as the transmission state identifier of the control resource set when the signal qualities of the N candidate reference signals are all lower than the second threshold.
在一个可能的实现方式中,上述接收单元,还用于接收上述网络设备发送的第二指示信息,上述第二指示信息指示上述控制资源集的传输状态标识对应K个候选参考信号,上 述K为大于或等于1的整数,上述K个候选参考信号与上述N个候选参考信号部分相同或完全不同。In a possible implementation manner, the receiving unit is further configured to receive the second indication information sent by the network device, the second indication information indicates that the transmission status identifier of the control resource set corresponds to K candidate reference signals, and the K is An integer greater than or equal to 1, the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
在一个可能的实现方式中,上述用户设备还包括发送单元,用于在上述N个候选参考信号的信号质量均低于第三阈值的情况下,向上述网络设备发送第三指示信息;上述第三指示信息指示上述N个候选参考信号的信号质量低于阈值。In a possible implementation manner, the user equipment further includes a sending unit, configured to send third indication information to the network device when the signal qualities of the N candidate reference signals are all lower than a third threshold; The three indication information indicate that the signal quality of the N candidate reference signals is lower than the threshold.
在一个可能的实现方式中,上述确定单元,还用于在上述用户设备同时接收到上述网络设备通过多播方式发送的第四指示信息和通过单播方式发送的第五指示信息的情况下,以上述第五指示信息指示的参考信号作为上述控制资源集的传输状态标识;上述第四指示信息指示所述控制资源集的传输状态标识对应两个或两个以上参考信号;上述第五指示信息指示上述控制资源集的传输状态标识对应一个参考信号。In a possible implementation manner, the determining unit is further configured to, when the user equipment simultaneously receives the fourth indication information sent by the network device in a multicast manner and the fifth indication information sent in a unicast manner, The reference signal indicated by the fifth indication information is used as the transmission status identifier of the control resource set; the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals; the fifth indication information The transmission status identifier indicating the above-mentioned control resource set corresponds to a reference signal.
第四方面,本申请实施例公开了一种网络设备,包括:In a fourth aspect, the embodiment of the present application discloses a network device, including:
生成单元,用于生成第一指示信息;a generating unit, configured to generate first indication information;
发送单元,用于向用户设备发送第一指示信息,上述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号;上述N个候选信号中的任一信号可用于上述用户设备接收第一下行控制信息,上述N为大于或等于1的整数;A sending unit, configured to send first indication information to the user equipment, where the first indication information indicates that the transmission status identifier of the control resource set corresponds to N candidate reference signals; any signal in the above N candidate signals can be used by the user equipment to receive The first downlink control information, the above N is an integer greater than or equal to 1;
上述发送单元,还用于向上述用户设备发送上述第一下行控制信息。The sending unit is further configured to send the first downlink control information to the user equipment.
在一个可能的实现方式中,上述第一指示信息通过单播或多播的方式进行传输。In a possible implementation manner, the foregoing first indication information is transmitted in a unicast or multicast manner.
在一个可能的实现方式中,上述发送单元,还用于向上述用户设备发送第二指示信息,上述第二指示信息指示上述控制资源集的传输状态标识对应K个候选参考信号;上述K为大于或等于1的整数;上述K个候选参考信号与上述N个候选参考信号部分相同或完全不同。In a possible implementation manner, the sending unit is further configured to send second indication information to the user equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals; the above K is greater than or an integer equal to 1; the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
在一个可能的实现方式中,上述网络设备还包括接收单元,用于接收上述用户设备发送的第三指示信息,上述第三指示信息指示上述N个候选参考信号的信号质量低于阈值。In a possible implementation manner, the network device further includes a receiving unit, configured to receive third indication information sent by the user equipment, where the third indication information indicates that the signal quality of the N candidate reference signals is lower than a threshold.
在一个可能的实现方式中,上述第三指示信息包括上述用户设备当前所在服务小区中的用于接收下行控制信息且信号质量较好的Y个信号,上述Y为大于或等于1的整数。In a possible implementation manner, the third indication information includes Y signals of good signal quality for receiving downlink control information in the serving cell where the user equipment is currently located, and the above Y is an integer greater than or equal to 1.
第五方面,本申请实施例公开了一种用户设备,包括:处理器和收发器;In a fifth aspect, the embodiment of the present application discloses a user equipment, including: a processor and a transceiver;
上述收发器,用于接收信号或者发送信号;上述处理器,用于执行存储器所存储的计算机执行指令,以使上述用户设备执行如第一方面或者第一方面的任意一种可能的实施方式中的方法。The above-mentioned transceiver is used to receive signals or send signals; the above-mentioned processor is used to execute computer-executable instructions stored in the memory, so that the above-mentioned user equipment executes the first aspect or any one of the possible implementation manners of the first aspect. Methods.
第六方面,本申请实施例公开了一种网络设备,包括:处理器和收发器;In a sixth aspect, the embodiment of the present application discloses a network device, including: a processor and a transceiver;
上述收发器,用于接收信号或者发送信号;上述处理器,用于执行存储器所存储的计算机执行指令,以使上述网络设备执行如第二方面或者第二方面的任意一种可能的实施方式中的方法。The above-mentioned transceiver is used to receive signals or send signals; the above-mentioned processor is used to execute computer-executable instructions stored in the memory, so that the above-mentioned network device executes the second aspect or any one of the possible implementation manners of the second aspect. Methods.
第七方面,本申请实施例公开了一种计算机可读存储介质,上述计算机可读存储介质中存储有计算机程序,当上述计算机程序在一个或多个处理器上运行时,使得如第一方面或者第一方面的任意一种可能的实施方式中的方法被执行;或者,当上述计算机程序在一个或多个处理器上运行时,使如第二方面或者第二方面的任意一种可能的实施方式中的方 法被执行。In the seventh aspect, the embodiment of the present application discloses a computer-readable storage medium, in which a computer program is stored in the above-mentioned computer-readable storage medium, and when the above-mentioned computer program is run on one or more processors, the Or the method in any possible implementation manner of the first aspect is executed; or, when the above-mentioned computer program is run on one or more processors, the second aspect or any one of the possible implementations of the second aspect The methods of the embodiments are carried out.
第八方面,本申请实施例提供了一种计算机程序产品,上述计算机程序产品包括程序指令,上述程序指令当被处理器执行时使上述处理器执行如第一方面或者第一方面的任意一种可能的实施方式中的方法;或者,上述程序指令当被处理器执行时使上述处理器执行如第二方面或者第二方面的任意一种可能的实施方式中的方法。In an eighth aspect, the embodiment of the present application provides a computer program product, the above-mentioned computer program product includes program instructions, and when the above-mentioned program instructions are executed by the processor, the above-mentioned processor executes any one of the first aspect or the first aspect. A method in a possible implementation manner; or, when the above-mentioned program instructions are executed by the processor, the above-mentioned processor executes the method in any one of the possible implementation manners of the second aspect or the second aspect.
为了更清楚地说明本申请实施例或背景技术中的技术方案,下面将对本申请实施例或背景技术中所需要使用的附图作简单的介绍。In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the following will briefly introduce the drawings that are required in the embodiments of the present application or the background art.
图1是本申请实施例提供的一种波束图;FIG. 1 is a beam diagram provided by an embodiment of the present application;
图2是本申请实施例提供的一种MAC CE的格式的示意图;Fig. 2 is the schematic diagram of the format of a kind of MAC CE that the embodiment of the present application provides;
图3是本申请实施例提供的一种场景示意图;FIG. 3 is a schematic diagram of a scenario provided by an embodiment of the present application;
图4是本申请实施例提供的另一种场景示意图;FIG. 4 is a schematic diagram of another scenario provided by the embodiment of the present application;
图5是本申请实施例提供的一种下行控制信息的接收方法的流程示意图;FIG. 5 is a schematic flowchart of a method for receiving downlink control information provided in an embodiment of the present application;
图6是本申请实施例提供的一种用户设备的结构示意图;FIG. 6 is a schematic structural diagram of a user equipment provided in an embodiment of the present application;
图7是本申请实施例提供的一种网络设备的结构示意图;FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present application;
图8是本申请实施例提供的一种通信装置的结构示意图;FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application;
图9是本申请实施例提供的另一种用户设备的结构示意图。FIG. 9 is a schematic structural diagram of another user equipment provided by an embodiment of the present application.
本申请以下实施例中所使用的术语只是为了描述特定实施例的目的,而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样,单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括复数表达形式,除非其上下文中明确地有相反指示。还应当理解,本申请中使用的术语“和/或”是指并包含一个或多个所列出项目的任何或所有可能组合。本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等是用于区别不同对象,而不是用于描述特定顺序。The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also Plural expressions are included unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in this application refers to and includes any and all possible combinations of one or more of the listed items. The terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order.
为了更清楚地描述本申请的方案,下面先介绍一些与本申请实施例相关的知识。In order to describe the solution of the present application more clearly, some knowledge related to the embodiments of the present application will be introduced below.
1、技术术语1. Technical terms
1.1、信道1.1. Channel
信道是以传输媒质为基础的信号通道,不同类型的信息需要经过不同的处理过程。例如,发射端的信源信息首先经过网络层、数据链路层、物理层的处理,再通过无线环境传输到接收端,最后经过物理层、数据链路层、网络层的整个处理过程就是信道。A channel is a signal channel based on a transmission medium, and different types of information need to be processed differently. For example, the source information of the transmitting end is first processed by the network layer, data link layer, and physical layer, and then transmitted to the receiving end through the wireless environment. Finally, the entire processing process of the physical layer, data link layer, and network layer is the channel.
在新无线***中,信道被分为逻辑信道、传输信道和物理信道。其中,物理信道是物理层实际传输信息的信道,传输信道是物理层与媒体接入控制(medium access control,MAC)子层之间的信道,逻辑信道是MAC子层和无线链路控制子层(radio link control,RLC)之间的信道。In the new radio system, channels are divided into logical channels, transport channels and physical channels. Among them, the physical channel is the channel through which the physical layer actually transmits information, the transport channel is the channel between the physical layer and the medium access control (MAC) sublayer, and the logical channel is the MAC sublayer and the radio link control sublayer (radio link control, RLC) between channels.
根据信道的不同作用,每种信道可以被分成多个种类的信道。例如,物理信道可以分 为上行信道和下行信道。上行信道包括物理上行共享信道(physical uplink shared channel,PUSCH)等。下行信道包括物理下行控制信道(physical downlink control channel,PDCCH)和物理下行共享信道(physical downlink shared channel,PDSCH)等。其中:According to the different functions of the channel, each channel can be divided into multiple types of channels. For example, physical channels can be divided into uplink channels and downlink channels. The uplink channel includes a physical uplink shared channel (physical uplink shared channel, PUSCH) and the like. The downlink channel includes a physical downlink control channel (physical downlink control channel, PDCCH) and a physical downlink shared channel (physical downlink shared channel, PDSCH). in:
PDSCH承载着用户的下行业务数据,为用户设备(user equipment,UE)提供服务。The PDSCH carries user downlink service data and provides services for user equipment (user equipment, UE).
PDCCH用于传送用户数据的资源分配的控制信息,即PDCCH承载着下行控制信息(downlink control information,DCI),DCI主要包含PDSCH和PUSCH传输资源调度信息、上行功控指示以及时隙格式指示等。PDCCH动态地将下行控制信息发给用户设备,用户设备通过读取该下行控制信息知道何时(时域)何地(频域)以及如何解调PDSCH,以及何时何地以何种方式组装并发送PUSCH数据。PDCCH is used to transmit the control information of resource allocation of user data, that is, PDCCH carries downlink control information (DCI), and DCI mainly includes PDSCH and PUSCH transmission resource scheduling information, uplink power control indication and time slot format indication, etc. PDCCH dynamically sends downlink control information to user equipment, and user equipment knows when (time domain) where (frequency domain) and how to demodulate PDSCH by reading the downlink control information, and when, where and how to assemble And send PUSCH data.
1.2、带宽部分(bandwidth part,BWP)1.2, bandwidth part (bandwidth part, BWP)
在长期演进(long term evolution,LTE)***中,最大传输带宽是20MHz。一般情况下,LTE可以支持多种工作带宽,例如5MHz、10MHz、20MHz。相应地,用户设备需要支持最大传输带宽(即20MHz)。In a long term evolution (long term evolution, LTE) system, the maximum transmission bandwidth is 20MHz. Generally, LTE can support multiple working bandwidths, such as 5MHz, 10MHz, and 20MHz. Correspondingly, the user equipment needs to support the maximum transmission bandwidth (ie 20 MHz).
在新无线***支持的最大传输带宽为400MHz,如果用户设备采用LTE的方式,即每个用户设备支持最大传输带宽(即400MHz),将用户设备的射频性要求太高,难以实现芯片的集成化,并且成本高。The maximum transmission bandwidth supported by the new wireless system is 400MHz. If the user equipment adopts the LTE method, that is, each user equipment supports the maximum transmission bandwidth (ie 400MHz), the radio frequency requirements of the user equipment are too high, and it is difficult to realize chip integration. , and the cost is high.
针对上述情况,可以采用带宽自适应(bandwidth adaptation,BA)技术来适应和调整用户设备发送和接收的工作带宽。带宽部分是小区总带宽的一个子集带宽,同一个用户设备可以在不同的时刻工作在不同的带宽部分。In view of the above situation, a bandwidth adaptation (bandwidth adaptation, BA) technology may be used to adapt and adjust the working bandwidth of the user equipment for sending and receiving. The bandwidth part is a subset bandwidth of the total bandwidth of the cell, and the same user equipment may work in different bandwidth parts at different times.
1.3、控制资源集(control resource set,CORESET)和搜索空间(search space)1.3. Control resource set (CORESET) and search space (search space)
在长期演进LTE***中,PDCCH在频域上占据服务小区的整个频段,时域上占据每个子帧的前1至3个正交频分复用(orthogonal frequency division multiplexing,OFDM)符号。也就是说,LTE***只需要通知用户设备PDCCH占据的OFDM符号数,用户设备便能确定PDCCH的搜索空间。In the Long Term Evolution LTE system, the PDCCH occupies the entire frequency band of the serving cell in the frequency domain, and occupies the first 1 to 3 orthogonal frequency division multiplexing (OFDM) symbols of each subframe in the time domain. That is to say, the LTE system only needs to notify the user equipment of the number of OFDM symbols occupied by the PDCCH, and the user equipment can determine the search space of the PDCCH.
而在新无线***中,由于***的带宽(400MHz)较大以及终端解调能力的差异性,为了提高资源利用率,PDCCH不在频域上占据整个带宽;此外,为了增加***的灵活性,以适配不同的场景,PDCCH在时域的起始位置也可配置。也就是说,用户设备必须知道PDCCH在频域上的位置和时域上的位置,才能进一步对PDCCH进行解调。In the new wireless system, due to the large system bandwidth (400MHz) and the difference in terminal demodulation capabilities, in order to improve resource utilization, the PDCCH does not occupy the entire bandwidth in the frequency domain; in addition, in order to increase the flexibility of the system, the To adapt to different scenarios, the starting position of the PDCCH in the time domain can also be configured. That is to say, the user equipment must know the position of the PDCCH in the frequency domain and the position in the time domain in order to further demodulate the PDCCH.
为了方便,新无线***将PDCCH频域上占据的频段和时域上占用的OFDM符号数等信息封装在控制资源集中;将PDCCH起始OFDM符号编号以及PDCCH监测周期等信息封装在搜索空间中。其中:For convenience, the new wireless system encapsulates information such as the frequency band occupied by the PDCCH in the frequency domain and the number of OFDM symbols occupied in the time domain in the control resource set; information such as the initial OFDM symbol number of the PDCCH and the PDCCH monitoring period are encapsulated in the search space. in:
控制资源集是下行资源网格中特定区域内的一组物理资源,用于承载PDCCH。控制资源集通过参数配置与搜索空间对应。示例性地,控制资源集包含字段CORESET ID,该字段用于与搜索空间相对应。The control resource set is a group of physical resources in a specific area in the downlink resource grid, and is used to bear the PDCCH. The control resource set corresponds to the search space through parameter configuration. Exemplarily, the control resource set includes a field CORESET ID, which is used to correspond to the search space.
搜索空间分为公共搜索空间(common search space,CSS)和用户设备特定搜索空间(user equipment specific search space,USS)。其中,公共搜索空间主要在用户设备接入小区和进行小区切换时使用,公共搜索空间也用于寻呼、***信息对应的DCI发送,而用户设备特定搜索空间则是在用户设备接入后使用。根据搜索空间的不同用途,可以将其分成 多种类型。例如,公共搜索空间中类型为Type 0-PDCCH的搜索空间用于***消息块1(system information block 1,SIB1)调度。The search space is divided into common search space (common search space, CSS) and user equipment specific search space (user equipment specific search space, USS). Among them, the common search space is mainly used when the user equipment accesses a cell and performs cell handover. The common search space is also used for paging and DCI transmission corresponding to system information, while the user equipment specific search space is used after the user equipment accesses . According to the different uses of the search space, it can be divided into several types. For example, the search space of type 0-PDCCH in the public search space is used for system information block 1 (system information block 1, SIB1) scheduling.
控制资源集和搜索空间之间的对应关系为:一个控制资源集可以和多个搜索空间对应,但一个搜索空间只能和一个控制资源集对应。同时结合控制资源集和搜索空间中的参数,用户设备就可以确定PDCCH的时频域具***置。The corresponding relationship between the control resource set and the search space is: one control resource set can correspond to multiple search spaces, but one search space can only correspond to one control resource set. At the same time, by combining the parameters in the control resource set and the search space, the user equipment can determine the specific location of the PDCCH in the time-frequency domain.
1.4、波束扫描(beam sweeping)1.4, beam sweeping (beam sweeping)
由于新无线***采用高频(例如6000MHz)信号进行部署,而无线信号在高频呈现出方向性好、路损大的特点,所以,一个波束只能覆盖有限的范围。因此,在新无线***中,只有较小的小区(cell)才可能仅仅包含一个波束,较大的小区一般需要多个波束(beam)才能实现完整的覆盖。示例性地,请参阅图1,图1是本申请实施例提供的一种波束图。对于由多个波束(如图1示出的波束1至波束8)构成的小区,由于硬件的限制,所有的波束无法在同一时刻进行传输。Since the new wireless system adopts high-frequency (for example, 6000MHz) signals for deployment, and wireless signals have the characteristics of good directionality and large path loss at high frequencies, one beam can only cover a limited range. Therefore, in the new wireless system, only a small cell (cell) may contain only one beam, and a larger cell generally requires multiple beams (beams) to achieve complete coverage. For example, please refer to FIG. 1 . FIG. 1 is a beam diagram provided by an embodiment of the present application. For a cell composed of multiple beams (beam 1 to beam 8 shown in FIG. 1 ), due to hardware limitations, all beams cannot transmit at the same time.
针对上述情况,新无线***采用波束赋形(beam forming)发射的方式来增加无线信号的覆盖距离。另外,由于每个波束覆盖的角度有限,新无线***通过波束扫描(beam sweeping)方式来覆盖整个小区的服务范围。波束扫描即在不同时刻,采用不同方向的波束发送物理信道或参考信号,进而实现不同波束的分时传输。In response to the above situation, the new wireless system adopts beam forming (beam forming) transmission to increase the coverage distance of wireless signals. In addition, since the angle covered by each beam is limited, the new wireless system uses beam sweeping to cover the service area of the entire cell. Beam scanning means that at different times, beams in different directions are used to send physical channels or reference signals, thereby realizing time-sharing transmission of different beams.
1.5、同步信号块(synchronization signal block,SSB)1.5. Synchronization signal block (SSB)
对于新无线中的某一个小区,同步信号按照一定的周期(如20ms、40ms或80ms等),以5ms为持续时长进行传输。其中,同步信号包括主同步信号(primary synchronization signal,PSS)和辅同步信号(secondary synchronization Signal,SSS)。For a certain cell in the new radio, the synchronization signal is transmitted according to a certain period (such as 20ms, 40ms or 80ms, etc.) with a duration of 5ms. Wherein, the synchronization signal includes a primary synchronization signal (primary synchronization signal, PSS) and a secondary synchronization signal (secondary synchronization signal, SSS).
在新无线***中,同步信号块(synchronization signal block,SSB)是最小的同步单元。基站可以根据传输需求灵活配置同步信号块的个数及其在时域和频域的位置。In the new wireless system, the synchronization signal block (synchronization signal block, SSB) is the smallest synchronization unit. The base station can flexibly configure the number of synchronization signal blocks and their positions in the time domain and frequency domain according to transmission requirements.
示例性地,一个小区可以传输一个或多个同步信号块(即不同的波束)。例如,小区A传输4个同步信号块SSB,分别是SSB0、SSB1、SSB2和SSB3;小区B传输8个同步信号块,即从SSB0到SSB7。对于小于或等于8个同步信号块的小区,用户设备通过检测物理广播信道的解调参考信号(DM-RS)可以确定该同步信号块的索引。Exemplarily, one cell may transmit one or more synchronization signal blocks (ie different beams). For example, cell A transmits 4 synchronization signal blocks SSB, namely SSB0, SSB1, SSB2 and SSB3; cell B transmits 8 synchronization signal blocks, namely SSB0 to SSB7. For a cell with less than or equal to 8 synchronization signal blocks, the user equipment can determine the index of the synchronization signal block by detecting the demodulation reference signal (DM-RS) of the physical broadcast channel.
同步信号块包括主同步信号和辅同步信号和物理广播信道(physical broadcast channel,PBCH)。其中:The synchronization signal block includes a primary synchronization signal, a secondary synchronization signal and a physical broadcast channel (PBCH). in:
主同步信号和辅同步信号用于使用户设备识别小区标识,以及使用户设备能够获得符号级别的同步。The primary synchronization signal and the secondary synchronization signal are used to enable the user equipment to identify the cell identity and enable the user equipment to obtain symbol-level synchronization.
PBCH承载无线资源控制(radio resource control,RRC)层的***参数,完成帧同步所需的其它重要参数,以及进一步解码其他物理信道所需的参数。The PBCH carries system parameters of the radio resource control (RRC) layer, other important parameters required to complete frame synchronization, and parameters required to further decode other physical channels.
具体地,PBCH包含主信息块(master information block,MIB)。主信息块包含字段pdcch-configSIB1,该字段配置了解码***消息块1(system information block 1,SIB1)对应的PDCCH所需要的参数。Specifically, the PBCH includes a master information block (master information block, MIB). The main information block includes the field pdcch-configSIB1, which configures the parameters required for decoding the PDCCH corresponding to the system information block 1 (SIB1).
2、用户设备接入新无线接入***的流程2. The process of user equipment accessing the new wireless access system
在新无线接入***中,基站可以配置用户设备在一个或者多个控制资源集中,根据自己的无线网络临时标识(radio network temporary identifier,RNTI)检测属于自己的DCI。 例如,对不考虑载波聚合的场景而言,用户设备工作在一个载波上,基站可以配置用户设备检测该载波上的一个或者多个控制资源集中的搜索空间,并根据自己的无线网络临时标识检测(例如盲检)属于自己的DCI,然后根据DCI接收数据或上传数据。In the new wireless access system, the base station can configure the user equipment to detect its own DCI according to its own radio network temporary identifier (RNTI) in one or more control resource sets. For example, for a scenario that does not consider carrier aggregation, the user equipment works on a carrier, the base station can configure the user equipment to detect one or more search spaces in the control resource set on the carrier, and detect (For example, blind detection) belongs to its own DCI, and then receive data or upload data according to the DCI.
特别地,一个用户设备可以有一个或多个无线网络临时标识RNTI。In particular, a user equipment may have one or more radio network temporary identifiers RNTI.
特别地,对于每个控制资源集,用户设备在检测DCI时需要先获知该控制资源集的传输状态标识(TCI(transmission configuration indicator)status indicator)。In particular, for each control resource set, the user equipment needs to first obtain the transmission status indicator (TCI (transmission configuration indicator) status indicator) of the control resource set when detecting the DCI.
对于同一控制资源集,用户设备可以通过不同的检测周期检测位于公共搜索空间和用户设备特定搜索空间的DCI。也即,用户设备可以不需要每个时隙均检测位于某个搜索空间上的由某个RNTI加扰的DCI,网络可以配置用户设备按照周期检测某个搜索空间上的DCI。对于每个搜索空间,用户设备需要检测的潜在DCI数量可以是一个或多个,因此每个搜索空间可以用搜索空间集表示。For the same set of control resources, the user equipment can detect DCI located in the common search space and the user equipment specific search space through different detection periods. That is, the user equipment may not need to detect the DCI scrambled by a certain RNTI on a certain search space in every time slot, and the network may configure the user equipment to detect the DCI on a certain search space periodically. For each search space, the number of potential DCIs that the user equipment needs to detect may be one or more, so each search space may be represented by a search space set.
R15(Release 15)中,一个激活带宽部分上可以配置的控制资源集的最大数目可以为3个;搜索空间集的最大数目可以为10个。因此,一个控制资源集中可以有3个以上的搜索空间集。In R15 (Release 15), the maximum number of control resource sets that can be configured on an active bandwidth part can be 3; the maximum number of search space sets can be 10. Therefore, there can be more than 3 search space sets in one control resource set.
对于初始接入服务小区并需要建立RRC连接的用户设备,需要从小区的初始带宽部分获得***消息。其中,***消息块1(即SIB1)由PDSCH承载,所以,用户设备需要知道PDSCH的调度信息才能接收或解码SIB1,即用户设备需要监检测承载PDSCH调度信息的PDCCH(可以理解为SIB1对应的PDCCH)。For a user equipment that initially accesses a serving cell and needs to establish an RRC connection, it needs to obtain system information from the initial bandwidth part of the cell. Among them, system information block 1 (that is, SIB1) is carried by PDSCH, so the user equipment needs to know the scheduling information of PDSCH to receive or decode SIB1, that is, the user equipment needs to monitor and detect the PDCCH carrying PDSCH scheduling information (which can be understood as the PDCCH corresponding to SIB1 ).
SIB1对应的PDCCH的搜索空间是公用搜索空间,其类型是type 0-PDCCH CSS,其关联的控制资源集是CORESET 0。The PDCCH search space corresponding to SIB1 is a common search space, its type is type 0-PDCCH CSS, and its associated control resource set is CORESET 0.
其中,CORESET 0可以理解为第一个控制资源集,其信息属于初始带宽部分的配置信息的一部分。如前文所述(同步信号块部分),同步信号块中的PBCH包括主信息块(master information block,MIB),MIB封装了初始接入的必要资源。具体地,MIB包括字段pdcch-configSIB1,该字段配置了解码SIB1对应的PDCCH的数据:CORESET 0和Type 0-PDCCH CSS。Among them, CORESET 0 can be understood as the first control resource set, and its information is part of the configuration information of the initial bandwidth part. As mentioned above (the part of the synchronization signal block), the PBCH in the synchronization signal block includes a master information block (master information block, MIB), and the MIB encapsulates the necessary resources for initial access. Specifically, the MIB includes the field pdcch-configSIB1, which is configured to decode the data of the PDCCH corresponding to SIB1: CORESET 0 and Type 0-PDCCH CSS.
用户设备接入小区并建立RRC连接的流程包括:The process of user equipment accessing a cell and establishing an RRC connection includes:
首先,用户设备从该小区的初始带宽部分获得***消息,即用户设备检测该小区位于初始带宽部分上的同步信号块。该同步信号块包括主同步信号、辅同步信号和物理广播信道。其中,物理广播信道承载了MIB,MIB中包含用户设备检测SIB1的控制资源集的配置信息,即CORESET 0。First, the user equipment obtains system information from the initial bandwidth part of the cell, that is, the user equipment detects the synchronization signal block of the cell located on the initial bandwidth part. The sync signal block includes a primary sync signal, a secondary sync signal, and a physical broadcast channel. Wherein, the physical broadcast channel bears the MIB, and the MIB includes the configuration information of the control resource set for the user equipment to detect the SIB1, that is, CORESET 0.
用户设备通过CORESET 0可以获得检测SIB1的搜索空间,即Type0-PDCCH CSS,该搜索空间映射到CORESET 0上。进一步地,用户设备可以通过SIB1获得其他信息,例如随机接入配置、公共PDSCH配置、无线网络标识等。SIB1中可以配置用户设备接收寻呼消息和随机接入响应的控制资源集(如CORESET 1),以及映射到CORESET 1上的寻呼消息的搜索空间集、随机接入的搜索空间集。如果SIB1中不配置寻呼消息和随机接入响应的CORESET 1,用户设备可以检测SIB1对应的控制资源集以获取上述信息。The user equipment can obtain the search space for detecting SIB1 through CORESET 0, that is, Type0-PDCCH CSS, and the search space is mapped to CORESET 0. Further, the user equipment can obtain other information through SIB1, such as random access configuration, public PDSCH configuration, wireless network identifier and so on. SIB1 can configure the control resource set (such as CORESET 1) for user equipment to receive paging messages and random access responses, as well as the search space set for paging messages mapped to CORESET 1 and the search space set for random access. If CORESET 1 of paging message and random access response is not configured in SIB1, the user equipment can detect the control resource set corresponding to SIB1 to obtain the above information.
当用户设备需建立RRC连接时,可以选择一个该小区探测的信号功率中超过门限的同步信号块。例如,该小区有同步信号块SSB0至SSB7。用户设备发现该小区超过门限的同 步信号块有SSB4和SSB5,则用户设备可以选择SSB5。When the user equipment needs to establish an RRC connection, it may select a synchronization signal block whose signal power detected by the cell exceeds a threshold. For example, the cell has synchronization signal blocks SSB0 to SSB7. The user equipment finds that there are SSB4 and SSB5 in the synchronization signal blocks exceeding the threshold in this cell, then the user equipment can select SSB5.
然后,用户设备依据***消息确定该SSB5对应的随机接入资源发起随机接入流程。此时,用户设备采用SSB5作为CORESET 0或CORESET 1(CORESET 1网络可以不配置)的传输状态标识。Then, the user equipment determines the random access resource corresponding to the SSB5 according to the system information and initiates a random access procedure. At this time, the user equipment uses SSB5 as the transmission status identifier of CORESET 0 or CORESET 1 (CORESET 1 network may not be configured).
上述情况下,用户设备认为CORESET 0与SSB5是高斯共存(Quasi co-location,QCL)的,即用户设备通过检测SSB5所获得的一些信道评估信息如时延扩展、多普勒频移等可以用于接收CORESET 0。用户设备依据***消息中配置随机接入的搜索空间集接收随机接入响应。然后,通过随机接入响应进一步获得上行授权,向基站发送无线资源控制RRC请求。In the above case, the user equipment considers that CORESET 0 and SSB5 are Gaussian co-location (Quasi co-location, QCL), that is, some channel evaluation information obtained by the user equipment by detecting SSB5, such as delay spread, Doppler frequency shift, etc., can be used On receiving CORESET 0. The user equipment receives the random access response according to the search space set configured for random access in the system message. Then, the uplink grant is further obtained through the random access response, and a radio resource control RRC request is sent to the base station.
基站收到请求之后,为用户设备分配资源,向用户设备发送RRC建立。用户设备收到RRC建立之后,利用基站所配置的资源向基站发送RRC建立完成。之后,用户设备进入RRC连接态。After receiving the request, the base station allocates resources for the user equipment, and sends RRC establishment to the user equipment. After receiving the RRC establishment, the user equipment uses the resources configured by the base station to send the RRC establishment completion to the base station. After that, the user equipment enters the RRC connection state.
用户设备在进入连接态之后,基站与用户设备之间的交互可以包括:After the user equipment enters the connected state, the interaction between the base station and the user equipment may include:
(1)、基站可以基于用户设备的能力以及业务需求为其配置其他控制资源集,以及映射在其他控制资源集上的搜索空间。(1) The base station may configure other control resource sets and search spaces mapped on the other control resource sets based on the user equipment's capabilities and service requirements.
(2)、基站可以通过下行控制信息将该用户设备从初始带宽部分(initial BWP)切换到其他带宽部分。(2) The base station can switch the user equipment from the initial bandwidth part (initial BWP) to other bandwidth parts through the downlink control information.
(3)、基站可以为用户设备配置该小区的其他带宽部分,以及位于其他带宽部分上的控制资源集等。(3) The base station may configure other bandwidth parts of the cell and control resource sets located on other bandwidth parts for the user equipment.
相应地,用户设备可以获取RRC信息,从而切换带宽部分、获得多个控制资源集资源等。Correspondingly, the user equipment can obtain RRC information, so as to switch bandwidth parts, obtain multiple control resource set resources, and the like.
对于其他控制资源集,基站可以通过对用户设备发送特定的MAC层控制单元(MAC control element,MAC CE)修改该控制资源集的传输状态标识。For other control resource sets, the base station can modify the transmission state identifier of the control resource set by sending a specific MAC layer control element (MAC control element, MAC CE) to the user equipment.
例如,基站可以修改传输状态标识为特定信道状态信息-参考信号(CSI-RS),即该控制资源集与CSI-RS为高斯共存,用户设备通过该CSI-RS接收对应的控制资源集;或者,基站可以修改传输状态标识为某个同步信号块,即该控制资源集与该同步信号块为高斯共存,用户设备通过该同步信号块接收对应的控制资源集。For example, the base station may modify the transmission state identifier to be a specific channel state information-reference signal (CSI-RS), that is, the control resource set and the CSI-RS are Gaussian coexistence, and the user equipment receives the corresponding control resource set through the CSI-RS; or , the base station can modify the transmission state identifier to be a certain synchronization signal block, that is, the control resource set and the synchronization signal block are Gaussian coexistence, and the user equipment receives the corresponding control resource set through the synchronization signal block.
总之,基站通过MAC CE修改控制资源集的传输状态标识,使得用户设备可以通过正确的参考信号接收控制资源集资源(即利用参考信号的信道评估信息辅助解析控制资源集上的PDCCH),进而获取到DCI。In short, the base station modifies the transmission status identifier of the control resource set through the MAC CE, so that the user equipment can receive the control resource set resources through the correct reference signal (that is, use the channel evaluation information of the reference signal to assist in parsing the PDCCH on the control resource set), and then obtain to DCI.
示例性地,图2是本申请实施例提供的一种MAC CE的格式的示意图。如图2所示,MAC CE可以以两个字节(octet,Oct)来指示服务小区标识(identification,ID)、控制资源集标识(CORESET ID)和传输状态标识。Exemplarily, FIG. 2 is a schematic diagram of a format of a MAC CE provided by the embodiment of the present application. As shown in Figure 2, the MAC CE can use two bytes (octet, Oct) to indicate the serving cell identification (identification, ID), control resource set identification (CORESET ID) and transmission status identification.
在用户设备与基站之间建立信令无线承载,以及用户设备完成安全模式激活之后,基站可以与用户设备建立数据无线承载,使得用户设备可以开展业务。After the signaling radio bearer is established between the user equipment and the base station, and the security mode activation of the user equipment is completed, the base station can establish a data radio bearer with the user equipment, so that the user equipment can carry out services.
3、多播机制(point to multicast,PTM)3. Multicast mechanism (point to multicast, PTM)
新无线***引入了多播机制。为了采用多播机制传输高可靠性的数据,接收多播的用户设备需要处于RRC连接态。New wireless systems introduce a multicast mechanism. In order to transmit highly reliable data using the multicast mechanism, the user equipment receiving the multicast needs to be in the RRC connection state.
多个用户设备接入服务小区,并且分别建立RRC连接之后,用户设备可以从小区的***消息中可以获知小区支持多播业务,于是,用户设备可以向服务小区指示自己期待开展多播业务。After multiple user equipments access the serving cell and establish RRC connections respectively, the user equipments can learn from the system information of the cell that the cell supports multicast services, so the user equipments can indicate to the serving cell that they expect to carry out multicast services.
具体地,基站通过配置,让参与多播的用户设备接收映射在同一个控制资源集上的公共搜索空间,从该公共搜索空间接收DCI,从而接收由该DCI指示的多播数据。特别地,为方便理解,以CORESET X表示该控制资源集,X可以取大于等于1的整数。Specifically, the base station configures the user equipments participating in the multicast to receive the common search space mapped on the same control resource set, receive the DCI from the common search space, and thereby receive the multicast data indicated by the DCI. In particular, for the convenience of understanding, the control resource set is represented by CORESET X, where X can be an integer greater than or equal to 1.
在用户设备的位置发生变化,无法通过原有的传输状态标识指示的参考信号接收CORESET X的情况下,基站需要向每个需要修改传输状态标识的用户设备发送MAC CE,以修改CORESET X的传输状态标识。从而让用户设备获知从修改后的控制资源集接收DCI时,与该修改后的控制资源集高斯共存的参考信号(如某个SSB或CSI-RS)。When the location of the user equipment changes and cannot receive CORESET X through the reference signal indicated by the original transmission status identifier, the base station needs to send MAC CE to each user equipment that needs to modify the transmission status identifier to modify the transmission of CORESET X Status ID. In this way, the user equipment can learn the reference signal (such as a certain SSB or CSI-RS) that Gaussianly coexists with the modified control resource set when receiving DCI from the modified control resource set.
也就是说,基站需要向每个需要修改传输状态标识的用户设备发送MAC CE来修改CORESET X的传输状态标识,让用户设备知晓控制资源集高斯共存QCL的参考信号,使得用户设备可以通过该信号接收控制资源集,进而接收到正确的DCI。That is to say, the base station needs to send a MAC CE to each user equipment that needs to modify the transmission status identifier to modify the transmission status identifier of CORESET X, so that the user equipment knows the reference signal that controls the resource set Gaussian coexistence QCL, so that the user equipment can pass this signal Receive the control resource set, and then receive the correct DCI.
示例性地,图3是本申请实施例提供的一种场景示意图。如图3所示,小区有8个同步信号块,以SSB1至SSB8为例。该小区支持多播业务,小区为用户设备配置接收多播业务的控制资源集,以及映射到该控制资源集上的搜索空间。Exemplarily, FIG. 3 is a schematic diagram of a scenario provided by an embodiment of the present application. As shown in Figure 3, the cell has 8 synchronization signal blocks, taking SSB1 to SSB8 as an example. The cell supports a multicast service, and the cell configures a control resource set for receiving the multicast service and a search space mapped to the control resource set for the user equipment.
为方便理解,该控制资源集记为CORESET X,以CORESET X的传输状态标识指示到同步信号块为例进行说明。也就是说,从用户设备的角度来看,CORESET X与某个同步信号块是高斯共存的,即用户设备可以通过检测该信号块获取信息来接收CORESET X,进而接收下行控制信息。For the convenience of understanding, the control resource set is recorded as CORESET X, and the transmission status indication of CORESET X to the synchronization signal block is taken as an example for illustration. That is to say, from the perspective of user equipment, CORESET X and a synchronization signal block are Gaussian coexistence, that is, user equipment can receive CORESET X by detecting the signal block to obtain information, and then receive downlink control information.
如图3所示,用户设备1位于SSB3所服务的区域,用户设备2位于SSB4所服务的区域。一段时间后,用户设备1从SSB3所服务的区域移动到SSB6所服务的区域,用户设备1会向小区上报自身测得的同步信号块的变化;用户设备2从SSB4所服务的区域移动到SSB5所服务的区域,用户设备2也会向小区上报自身测得的同步信号块的变化。As shown in FIG. 3 , user equipment 1 is located in the area served by SSB3, and user equipment 2 is located in the area served by SSB4. After a period of time, user equipment 1 moves from the area served by SSB3 to the area served by SSB6, and user equipment 1 will report the change of the synchronization signal block measured by itself to the cell; user equipment 2 moves from the area served by SSB4 to SSB5 In the served area, the user equipment 2 will also report the change of the synchronization signal block measured by itself to the cell.
可理解地,用户设备测得的同步信号块发生变化时,会向基站进行上报,因此,基站可以根据不同的用户设备测得的同步信号块调整多播业务对应的同步信号块,即确定在哪些同步信号块所在波束发送多播业务。Understandably, when the synchronization signal block measured by the user equipment changes, it will report to the base station. Therefore, the base station can adjust the synchronization signal block corresponding to the multicast service according to the synchronization signal block measured by different user equipment, that is, determine in The beams where the synchronization signal blocks are located send multicast services.
例如,在用户设备移动之前,小区以SSB1至SSB4作为CORESET X高斯共存的波束服务小区内部的接收多播业务的用户设备,也就是说,用户设备可以通过以SSB1至SSB4中任一参考信号作为CORESET X高斯共存的信号来接收开展多播业务的DCI。在用户设备移动之后,小区根据用户设备上报的信息,CORESET X需要以SSB5至SSB8任何一个参考信号作为高斯共存的波束服务小区内部的接收多播业务的用户设备。For example, before the user equipment moves, the cell uses SSB1 to SSB4 as the CORESET X Gaussian coexistence beam to serve the user equipment receiving the multicast service in the cell, that is, the user equipment can use any reference signal from SSB1 to SSB4 as the CORESET X Gaussian coexistence signal to receive DCI for multicast service. After the user equipment moves, according to the information reported by the user equipment in the cell, CORESET X needs to use any reference signal from SSB5 to SSB8 as a Gaussian coexistence beam to serve the user equipment receiving multicast services inside the cell.
在上述情况下,基站需要更改用户设备1和用户设备2的传输状态标识。具体地,请参阅图4,图4是本申请实施例提供的另一种场景示意图。如图4中401部分所示,基站向用户设备1发送MAC CE,指示用户设备1通过SSB6接收开展多播业务的DCI(即CORESET X以SSB6作为传输状态标识);如图4中402部分所示,基站向用户设备2发送MAC CE,指示用户设备2通过SSB5接收开展多播业务的DCI,使得位置发生变化之后的用户设备1和用户设备2可以通过检测正确的同步信号块来接收开展多播业务的DCI。In the above situation, the base station needs to change the transmission state identifiers of user equipment 1 and user equipment 2 . Specifically, please refer to FIG. 4 , which is a schematic diagram of another scenario provided by an embodiment of the present application. As shown in part 401 in Figure 4, the base station sends a MAC CE to user equipment 1, instructing user equipment 1 to receive DCI for multicast services through SSB6 (that is, CORESET X uses SSB6 as the transmission status identifier); as shown in part 402 in Figure 4 As shown, the base station sends a MAC CE to user equipment 2, instructing user equipment 2 to receive DCI for multicast service through SSB5, so that user equipment 1 and user equipment 2 can receive and carry out multicast services by detecting the correct synchronization signal block after the location changes. DCI of the broadcast service.
可以理解的是,一个小区内接收多播数据的用户设备通常有多个。例如,一个服务小区可以服务数十个或数百个用户设备接收多播数据,通过上述方法更新控制资源集的状态,资源开销极大。It can be understood that there are usually multiple user equipments receiving multicast data in a cell. For example, a serving cell may serve dozens or hundreds of user equipments to receive multicast data, and updating the state of the control resource set through the above method will cause a huge resource overhead.
针对上述问题,本申请实施例提供了一种下行控制信息的接收方法。上述下行控制信息的接收方法可以应用于用户设备。在用户设备需要更新接收下行控制信息的参考信号时,自动选择网络设备发送的多个用于接收下行控制信息的参考信号中的信号质量较好的信号来接收下行控制信息,从而减少接收下行控制信息过程中的资源开销。相应地,本申请实施例提供了一种信号的发送方法,上述信号的发送方法可以应用于网络设备。为了便于理解,接下来将上述两种方法结合起来进行解释。In view of the above problems, the embodiment of the present application provides a method for receiving downlink control information. The above method for receiving downlink control information can be applied to user equipment. When the user equipment needs to update the reference signal for receiving downlink control information, it automatically selects the signal with better signal quality among the multiple reference signals for receiving downlink control information sent by the network device to receive the downlink control information, thereby reducing the number of receiving downlink control information. Resource overhead in the information process. Correspondingly, an embodiment of the present application provides a method for sending a signal, and the above method for sending a signal can be applied to a network device. For ease of understanding, the above two methods will be explained in combination next.
具体地,请参阅图5,图5是本申请实施例提供的一种下行控制信息的接收方法的流程示意图。如图5所示,该下行控制信息的接收方法包括:Specifically, please refer to FIG. 5 . FIG. 5 is a schematic flowchart of a method for receiving downlink control information provided in an embodiment of the present application. As shown in Figure 5, the method for receiving the downlink control information includes:
501:用户设备接收网络设备发送的第一指示信息,该指示信息指示控制资源集的传输状态标识对应N个候选参考信号,该N为大于或等于1的整数。501: The user equipment receives first indication information sent by the network device, where the indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1.
该第一指示信息可以理解为指示多个用于接收下行控制信息的参考信号的信息,即指示该控制资源集(可以理解为前文中的CORESET X)与N个候选参考信号是高斯共存QCL的,因为N个候选参考信号不是同时由服务小区发送的,因此该控制资源集是在不同的时间段分别与这N个候选参考信号是高斯共存的。The first indication information can be understood as information indicating a plurality of reference signals for receiving downlink control information, that is, indicating that the control resource set (which can be understood as CORESET X in the foregoing) and N candidate reference signals are Gaussian coexistence QCL , because the N candidate reference signals are not sent by the serving cell at the same time, so the control resource set is Gaussianly co-existing with the N candidate reference signals in different time periods.
也就是说,网络设备发送的该第一指示信息可以指示多个参考信号,该多个参考信号中的任一信号可以用于用户设备接收下行控制信息。例如,该第一指示信息可以指示同步信号块(SSB)或CSI-RS。示例性地,该第一指示信息指示3个同步信号块:SSB1、SSB2以及SSB3,用户设备可以用其中任一同步信号块来接收下行控制信息,只要用户设备检测的该SSB的信号质量超过阈值。That is to say, the first indication information sent by the network device may indicate multiple reference signals, and any signal in the multiple reference signals may be used for the user equipment to receive downlink control information. For example, the first indication information may indicate a synchronization signal block (SSB) or a CSI-RS. Exemplarily, the first indication information indicates three synchronization signal blocks: SSB1, SSB2, and SSB3, and the user equipment can use any of the synchronization signal blocks to receive downlink control information, as long as the signal quality of the SSB detected by the user equipment exceeds the threshold .
该阈值可以理解为衡量信号质量的值。可以理解地,该阈值可以以根据实际情况进行调整,本申请对此不作限制。The threshold can be understood as a value to measure the quality of the signal. Understandably, the threshold may be adjusted according to actual conditions, which is not limited in the present application.
在一些实施例中,该第一指示信息可以指示控制资源集的传输状态标识对应N个候选参考信号的标识信息。示例性地,该第一指示信息可以包括SSB1、SSB2以及SSB3的标识信息(SSB index)。In some embodiments, the first indication information may indicate that the transmission state identifier of the control resource set corresponds to identification information of N candidate reference signals. Exemplarily, the first indication information may include identification information (SSB index) of SSB1, SSB2, and SSB3.
具体地,网络设备生成第一指示信息,该第一指示信息指示该控制资源集的传输状态标识对应N个候选参考信号,该N为大于或等于1的整数。然后,网络设备向用户设发送该第一指示信息;相应地,用户设备接收网络设备发送的该第一指示信息。Specifically, the network device generates first indication information, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1. Then, the network device sends the first indication information to the user equipment; correspondingly, the user equipment receives the first indication information sent by the network device.
可以理解地,可以在用户设备需要接收多播业务对应的下行控制信息之前,接收网络设备发送的第一指示信息。例如,在用户设备向自身所在服务小区指示期望开展多播业务之后,用户设备就需要接收多播业务对应的下行控制信息(即通过该下行控制信息调度多播业务的传输)来接收多播数据;于是,用户设备在接收多播业务对应的下行控制信息之前,接收网络设备发送的第一指示信息。Understandably, before the user equipment needs to receive downlink control information corresponding to the multicast service, it may receive the first indication information sent by the network device. For example, after the user equipment indicates to its serving cell that it expects to carry out the multicast service, the user equipment needs to receive the downlink control information corresponding to the multicast service (that is, schedule the transmission of the multicast service through the downlink control information) to receive the multicast data ; Therefore, before receiving the downlink control information corresponding to the multicast service, the user equipment receives the first indication information sent by the network equipment.
在一些实施例中,该第一指示信息通过单播或多播的方式进行传输。In some embodiments, the first indication information is transmitted in a unicast or multicast manner.
可以理解地,在用户设备接收多播业务之前,可能该用户设备在开展单播(unicast)业务,网络设备可以以单播方式向用户设备发送第一指示信息,即通过专用信令单独向用 户设备发送第一指示信息。如以该用户设备的小区无线网络临时标识C-RNTI加扰的下行控制信息传输第一指示信息,第一指示信息是MAC CE,在PDSCH上承载,下行控制信息指示承载该MAC CE的PDSCH时频资源位置。在用户设备接收多播业务之后,网络设备可以通过多播的方式向(多个)用户设备发送第一指示信息,可以通过调度多播业务的下行控制信息(用G-RNTI加扰)发送第一指示信息,第一指示信息此时位于多播业务所在的PDSCH时频资源上,网络设备通过复用的方式同时传输多播数据和第一指示信息。It can be understood that before the user equipment receives the multicast service, the user equipment may be carrying out unicast (unicast) service, and the network device may send the first indication information to the user equipment in unicast mode, that is, send the first indication information to the user equipment separately through dedicated signaling. The device sends first indication information. If the downlink control information scrambled by the cell wireless network temporary identifier C-RNTI of the user equipment is used to transmit the first indication information, the first indication information is MAC CE, carried on the PDSCH, and the downlink control information indicates the PDSCH carrying the MAC CE The location of the frequency resource. After the user equipment receives the multicast service, the network device can send the first indication information to the (multiple) user equipment in a multicast manner, and can send the second indication information by scheduling the downlink control information of the multicast service (scrambled with G-RNTI). One indication information, the first indication information is located on the PDSCH time-frequency resource where the multicast service is located at this time, and the network device simultaneously transmits the multicast data and the first indication information in a multiplexing manner.
502:用户设备以该N个候选参考信号中任一个参考信号作为该控制资源集的传输状态标识。502: The user equipment uses any one of the N candidate reference signals as a transmission state identifier of the control resource set.
该N个候选参考信号中的任一参考信号可以理解为能够使某个用户设备接收到该第一下行控制信息的信号。只是对于不同的用户设备来说,用户设备实际位于所在的服务小区的不同波束覆盖范围内,用户设备测得该N个候选参考信号的信号质量可能不同。Any reference signal among the N candidate reference signals may be understood as a signal capable of enabling a certain user equipment to receive the first downlink control information. It is just that for different user equipments, the user equipments are actually located in different beam coverage areas of the serving cells where the user equipments are located, and the signal quality of the N candidate reference signals measured by the user equipments may be different.
在一些实施例中,用户设备根据该N个候选参考信号中的信号质量较好的参考信号接收该第一下行控制信息。示例性地,用户设备可以在当前所在的服务小区对该N个候选参考信号进行信号质量检测,用户设备利用其中信号质量较好的参考信号来接收该第一下行控制信息,即依据信号质量较好的参考信号的信道评估信息来接收该控制资源集,进而接收映射在该控制资源集上的搜索空间中的第一下行控制信息。In some embodiments, the user equipment receives the first downlink control information according to a reference signal with better signal quality among the N candidate reference signals. Exemplarily, the user equipment can perform signal quality detection on the N candidate reference signals in the serving cell where it is currently located, and the user equipment uses the reference signal with better signal quality to receive the first downlink control information, that is, according to the signal quality Preferably, the channel estimation information of the reference signal is used to receive the control resource set, and then receive the first downlink control information in the search space mapped on the control resource set.
可以理解地,上述信号质量可以通过参考信号接收功率(reference signal receiving power,RSRP)、参考信号接收质量(reference signal receiving quality,RSRQ)以及信号与干扰加噪声比(signal to interference plus noise ratio,SINR)等进行确定,本申请对此不作限定。It can be understood that the above signal quality can be determined by reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ) and signal to interference plus noise ratio (signal to interference plus noise ratio, SINR ), etc., which are not limited in this application.
可以理解地,上述N个候选参考信号中信号质量超过阈值的参考信号都可以被理解为信号质量较好的信号。例如,该第一指示信息指示控制资源集的传输状态标识对应5个候选参考信号:候选参考信号A、候选参考信号B、候选参考信号C、候选参考信号D和候选参考信号E;用户设备在当前所在服务小区中,无法检测到候选参考信号A,而其他候选参考信号中,候选参考信号D的信号质量低于阈值;于是,候选参考信号B、候选参考信号C和候选参考信号E可以理解为信号质量较好的参考信号。所以,用户设备从候选参考信号B、候选参考信号C和候选参考信号E中选择任一信号来接收下行控制信息。It can be understood that, among the above N candidate reference signals, the reference signals whose signal quality exceeds the threshold can be understood as signals with better signal quality. For example, the first indication information indicates that the transmission state identifier of the control resource set corresponds to five candidate reference signals: candidate reference signal A, candidate reference signal B, candidate reference signal C, candidate reference signal D, and candidate reference signal E; In the current serving cell, candidate reference signal A cannot be detected, and among other candidate reference signals, the signal quality of candidate reference signal D is lower than the threshold; thus, candidate reference signal B, candidate reference signal C and candidate reference signal E can be understood It is a reference signal with better signal quality. Therefore, the user equipment selects any signal from the candidate reference signal B, the candidate reference signal C and the candidate reference signal E to receive the downlink control information.
优选的,用户设备可以选择上述N个候选参考信号中信号质量最好的信号接收第一下行控制信息,即认为该控制资源集的传输状态标识对应信号质量最好的参考信号,利用该参考信号接收该控制资源集上传输的第一下行控制信息。Preferably, the user equipment may select the signal with the best signal quality among the above N candidate reference signals to receive the first downlink control information, that is, it considers that the transmission state identifier of the control resource set corresponds to the reference signal with the best signal quality, and uses the reference signal The signal receives the first downlink control information transmitted on the control resource set.
503:用户设备根据该控制资源集的传输状态标识从该控制资源集接收第一下行控制信息。503: The user equipment receives first downlink control information from the control resource set according to the transmission state identifier of the control resource set.
在一些实施例中,该用户设备根据该N个候选参考信号中的信号质量较好的信号接收第一下行控制信息,包括:In some embodiments, the user equipment receives first downlink control information according to a signal with better signal quality among the N candidate reference signals, including:
用户设备根据M个候选参考信号中的信号质量较好且包含于该N个候选参考信号的信号接收第一下行控制信息;该M个候选参考信号为用户设备当前所在服务小区中的信号,该M为大于或等于1的整数。The user equipment receives the first downlink control information according to the signal quality of the M candidate reference signals that is better and included in the N candidate reference signals; the M candidate reference signals are signals in the serving cell where the user equipment is currently located, The M is an integer greater than or equal to 1.
具体地,用户设备可以直接对自身当前所在服务小区的信号进行检测,得到M个候选参考信号;然后,用户设备根据该M个候选参考信号中的信号质量较好且包含于该N个候 选参考信号的信号来接收下行控制信息。Specifically, the user equipment can directly detect the signal of the serving cell where it is currently located to obtain M candidate reference signals; signal to receive downlink control information.
在一些实施例中,该M个候选参考信号为当前所在服务小区中的能够用于接收下行控制信息的信号。具体地,用户设备可以直接对当前所在服务小区中的能够用于接收下行控制信息的信号进行检测,得到M个候选参考信号;然后,用户设备根据该M个候选参考信号中的信号质量较好且包含于该N个候选参考信号的信号来接收下行控制信息。In some embodiments, the M candidate reference signals are signals that can be used to receive downlink control information in the current serving cell. Specifically, the user equipment can directly detect signals that can be used to receive downlink control information in the current serving cell to obtain M candidate reference signals; And the signals included in the N candidate reference signals are used to receive downlink control information.
在一些实施例中,在该N个候选参考信号的信号质量均低于阈值的情况下,用户设备选择任何一个候选参考信号作为上述控制资源集的传输状态标识,然后依据所选择的参考信号的信道评估信息,接收CORESET X上的下行控制信息。In some embodiments, when the signal quality of the N candidate reference signals is lower than the threshold, the user equipment selects any one candidate reference signal as the transmission state identifier of the control resource set, and then according to the selected reference signal Channel assessment information, receive downlink control information on CORESET X.
在一些实施例中,上述502,即用户设备以该N个候选参考信号中任一个参考信号作为上述控制资源集的传输状态标识,包括:In some embodiments, the above 502, that is, the user equipment uses any one of the N candidate reference signals as the transmission status identifier of the control resource set, includes:
在第一时刻,上述用户设备以上述N个候选参考信号中的第一参考信号作为上述控制资源集的传输状态标识;At the first moment, the user equipment uses the first reference signal among the N candidate reference signals as the transmission status identifier of the control resource set;
上述方法还包括:在第二时刻,上述用户设备以上述N个候选参考信号中的第二参考信号作为上述控制资源集的传输状态标识;上述第一参考信号与上述第二参考信号为上述N个候选参考信号中的不同信号;The above method further includes: at a second moment, the user equipment uses the second reference signal among the N candidate reference signals as the transmission status identifier of the control resource set; the first reference signal and the second reference signal are the N Different signals in candidate reference signals;
上述用户设备根据上述控制资源集的传输状态标识从上述控制资源集接收第二下行控制信息。The user equipment receives second downlink control information from the control resource set according to the transmission state identifier of the control resource set.
具体地,用户设备在不同时间以上述N个候选参考信号中的不同参考信号作为控制资源集CORESET X的传输状态标识。Specifically, the user equipment uses different reference signals among the N candidate reference signals as the transmission state identifier of the control resource set CORESET X at different times.
示例性地,一个用户设备可以在时刻1(可以理解为上述第一时刻)以N个候选参考信号中的一个参考信号(可理解为上述第一参考信号)作为CORESET X的传输状态标识,试图解析CORESET X上的下行控制信息,但有可能不成功,用户设备此时可以在下一时刻(例如时刻2,可以理解为上述第二时刻)以N个候选参考信号中的另一个参考信号(可以理解为上述第二参考信号)作为CORESET X的传输状态标识,再次解析CORESET X上的下行控制信息,通过这种方式,可以提升解析下行控制信息的成功率。Exemplarily, a user equipment can use one of the N candidate reference signals (which can be understood as the first reference signal) as the transmission state identifier of CORESET X at time 1 (which can be understood as the first time mentioned above), trying to Parse the downlink control information on CORESET X, but it may not be successful. At this time, the user equipment can use another reference signal among the N candidate reference signals (can be It is understood as the above-mentioned second reference signal) as the transmission status identifier of CORESET X, and the downlink control information on CORESET X is analyzed again. In this way, the success rate of analyzing downlink control information can be improved.
可以理解地,在用户设备和网络设备之间的状态不发生变化的情况下,用户设备可以通过该第一指示信息指示的N个候选参考信号中的信号多次接收下行控制信息。It can be understood that, in the case that the state between the user equipment and the network equipment does not change, the user equipment may receive downlink control information multiple times through the signals in the N candidate reference signals indicated by the first indication information.
在一些实施例中,网络设备会更新当前服务小区用于接收开展多播数据的下行控制信息的信号。也就是说,在上述502之后,即用户设备根据该N个候选参考信号中的任一个参考信号接收第一下行控制信息,进而接收到对应的数据之后,用户设备还可能再次接收网络设备的第二指示信息。In some embodiments, the network device updates a signal used by the current serving cell to receive downlink control information for carrying out multicast data. That is to say, after the above 502, that is, after the user equipment receives the first downlink control information according to any one of the N candidate reference signals, and then receives the corresponding data, the user equipment may also receive the network device again. Second instruction message.
在一些实施例中,用户设备接收网络设备发送的第二指示信息,该第二指示信息指示该控制资源集的传输状态标识对应K个候选参考信号,该K为大于或等于1的整数。In some embodiments, the user equipment receives the second indication information sent by the network equipment, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, where K is an integer greater than or equal to 1.
具体地,网络设备生成第二指示信息,该第二指示信息指示该控制资源集的传输状态标识对应K个候选参考信号,该K为大于或等于1的整数。然后,网络设备向用户设发送该第二指示信息;相应地,用户设备接收网络设备发送的该第二指示信息。Specifically, the network device generates second indication information, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, where K is an integer greater than or equal to 1. Then, the network device sends the second indication information to the user equipment; correspondingly, the user equipment receives the second indication information sent by the network device.
可以理解地,该K个候选参考信号与前述N个候选参考信号部分相同或完全不同,本 申请对此不作限制。It can be understood that the K candidate reference signals are partly the same as or completely different from the aforementioned N candidate reference signals, which is not limited in the present application.
可以理解地,网络设备更新当前服务小区用于接收开展多播数据的下行控制信息的信号后,网络设备向用户设备发送该第二指示信息,使得用户设备可以通过正确的信号来接收下行控制信息。Understandably, after the network device updates the current serving cell for receiving the downlink control information signal of the multicast data, the network device sends the second indication information to the user equipment, so that the user equipment can receive the downlink control information through a correct signal .
该第二指示信息可以理解为指示多个用于接收下行控制信息的信号的信息。也就是说,网络设备发送的该第二指示信息可以指示多个信号,该多个信号中的任一信号可以用于用户设备接收下行控制信息。例如,该第二指示信息可以指示同步信号块(SSB)。示例性地,该第一指示信息指示3个同步信号块:SSB3、SSB4以及SSB5,用户设备可以用其中任一个同步信号块来接收下行控制信息,只要用户设备检测的该同步信号块的信号质量超过阈值。The second indication information may be understood as information indicating multiple signals for receiving downlink control information. That is to say, the second indication information sent by the network device may indicate multiple signals, and any signal in the multiple signals may be used for the user equipment to receive downlink control information. For example, the second indication information may indicate a synchronization signal block (SSB). Exemplarily, the first indication information indicates three synchronization signal blocks: SSB3, SSB4 and SSB5, and the user equipment can use any one of the synchronization signal blocks to receive downlink control information, as long as the signal quality of the synchronization signal block detected by the user equipment is Threshold exceeded.
在一些实施例中,该第二指示信息可以包括N个候选参考信号的标识信息。示例性地,该第一指示信息包括SSB3、SSB4以及SSB5的标识信息(SSB index)。In some embodiments, the second indication information may include identification information of the N candidate reference signals. Exemplarily, the first indication information includes identification information (SSB index) of SSB3, SSB4 and SSB5.
相应地,在网络设备向用户设备发送该第二指示信息之后,网络设备可以向用户设发送第二下行控制信息。Correspondingly, after the network device sends the second indication information to the user equipment, the network device may send the second downlink control information to the user equipment.
在一些实施例中,第二指示信息通过单播或多播的方式进行传输。In some embodiments, the second indication information is transmitted in a unicast or multicast manner.
可以理解地,当用户设备在服务小区检测到该K个候选参考信号中的信号质量均低于阈值时,采用这些参考信号作为CORESET X的传输状态标识,进而接收CORESET X上的下行控制信息时,解析失败的可能性很大,因此用户设备通过该第三指示信息向网络设备进行反馈,以便于网络设备为该用户设备重新指示用于接收下行控制信息的传输状态标识。It can be understood that when the user equipment detects that the signal quality of the K candidate reference signals is lower than the threshold in the serving cell, these reference signals are used as the transmission status identification of CORESET X, and then when receiving the downlink control information on CORESET X , the possibility of parsing failure is very high, so the user equipment feeds back to the network equipment through the third indication information, so that the network equipment re-indicates the transmission state identifier for receiving downlink control information for the user equipment.
在一些实施例中,该第三指示信息还可以包括用户设备测得当前所在服务小区中信号质量较好的Y个参考信号,该Y为大于或等于1的整数。In some embodiments, the third indication information may also include Y reference signals with better signal quality in the current serving cell measured by the user equipment, where Y is an integer greater than or equal to 1.
相应地,网络设备接收到用户设备发送的该第三指示信息之后,网络设备可以为用户设备重新配置接收该第二下行控制信息的参考信号。示例性地,网络设备可以将用于接收该第二下行控制信息的重新配置为该Y个信号中任一个信号,然后,网络设备向用户设备发送指示信息以指示用户设备从该Y个信号中选择任一信号来接收相应的下行控制信息;或者,网络设备直接指示用户设备使用信号A来接收对应的下行控制信息,该信号A可以是该Y个信号中的任一信号,也可以是其他信号。Correspondingly, after the network device receives the third indication information sent by the user equipment, the network device may reconfigure the reference signal for receiving the second downlink control information for the user equipment. Exemplarily, the network device may reconfigure the signal used to receive the second downlink control information as any one of the Y signals, and then, the network device sends indication information to the user equipment to instruct the user equipment to select from the Y signals Select any signal to receive the corresponding downlink control information; or, the network device directly instructs the user equipment to use signal A to receive the corresponding downlink control information, and the signal A can be any signal in the Y signals or other Signal.
在一些实施例中,在用户设备同时接收到网络设备通过多播方式发送的第四指示信息和通过单播方式发送的第五指示信息的情况下,用户设备以第五指示信息指示的参考信号作为控制资源集CORESET X的传输状态标识;该第四指示信息指示所述控制资源集的传输状态标识对应两个或两个以上参考信号;该第五指示信息指示控制资源集CORESET X的传输状态标识对应一个参考信号。In some embodiments, when the user equipment simultaneously receives the fourth indication information sent by the network device through multicast and the fifth indication information sent through unicast, the user equipment uses the reference signal indicated by the fifth indication information As the transmission status identifier of the control resource set CORESET X; the fourth indication information indicates that the transmission status identification of the control resource set corresponds to two or more reference signals; the fifth indication information indicates the transmission status of the control resource set CORESET X The identification corresponds to a reference signal.
下面以具体的场景来说明本申请实施例提供的下行控制信息的接收方法。The method for receiving downlink control information provided by the embodiment of the present application is described below in a specific scenario.
以新无线***中,用户设备通过接收下行控制信息来接收多播数据的场景为例。根据前文的描述可以知道,新无线***的多播机制中,网络设备通过配置,让参与多播的用户设备接收映射在同一个控制资源集上的公共搜索空间,从该公共搜索空间接收下行控制信 息,从而接收由该下行控制信息指示的多播数据。特别地,为方便理解,以CORESET X表示该控制资源集。In the new wireless system, the scenario where the user equipment receives multicast data by receiving downlink control information is taken as an example. According to the previous description, it can be known that in the multicast mechanism of the new wireless system, the network equipment is configured so that the user equipment participating in the multicast receives the common search space mapped on the same control resource set, and receives the downlink control from the common search space. information, so as to receive the multicast data indicated by the downlink control information. In particular, for the convenience of understanding, the control resource set is represented by CORESET X.
可以理解地,接收下行控制信息的信号(即上述N个候选参考信号中的任一信号)可以有多种,例如同步信号块(SSB)或CSI-RS等,本例以SSB示出。It can be understood that there may be multiple signals for receiving downlink control information (that is, any one of the above N candidate reference signals), such as Synchronization Signal Block (SSB) or CSI-RS, etc., and SSB is shown in this example.
在新无线***中,网络设备通过MAC CE向用户设备发送信息(即上述第一指示信息等)来告知用户设备用于接收多播数据的下行控制信息的信号。In the new wireless system, the network device sends information (ie, the first indication information, etc.) to the user equipment through the MAC CE to inform the user equipment of the downlink control information signal for receiving multicast data.
具体地,本申请实施例提供的下行控制信息的接收方法包括:Specifically, the method for receiving downlink control information provided in the embodiment of the present application includes:
网络设备通过一个MAC CE,向参与多播的用户设备统一指示使用SSB5、SSB6以及SSB7来接收下行控制信息。Through a MAC CE, the network device uniformly instructs the user equipment participating in the multicast to use SSB5, SSB6 and SSB7 to receive downlink control information.
该MAC CE可以理解为上述第一指示信息;SSB5、SSB6以及SSB7可以理解为上述N个候选参考信号。The MAC CE can be understood as the above first indication information; SSB5, SSB6 and SSB7 can be understood as the above N candidate reference signals.
具体地,网络设备可以在传输多播业务的同时向参与多播的用户设备发送该MAC CE。Specifically, the network device may send the MAC CE to the user equipment participating in the multicast while transmitting the multicast service.
对于接收多播的用户设备,获取了该MAC CE之后,可以自己所测的最强的数个SSB中与SSB5、6、7有交集的信号来接收下行控制信息。For the user equipment receiving multicast, after obtaining the MAC CE, it can receive the downlink control information from the signals that intersect with SSB5, 6, and 7 among the strongest SSBs measured by itself.
或者,用户设备可以用自己测得的SSB5、SSB6以及SSB7中信号质量最好或功率最强的SSB来接收下行控制信息。Alternatively, the user equipment may use the SSB with the best signal quality or the strongest power among the SSB5, SSB6 and SSB7 measured by itself to receive the downlink control information.
示例性地,用户设备测得SSB6的信号强度最高,用户设备根据SSB6来接收下行控制信息。具体地,用户设备检测SSB6所获得的一些信道评估信息如时延扩展、多普勒频移等用于接收CORESET X,从映射到CORESET X上的搜索空间中接收下行控制信息,进而通过该下行控制信息指示的频域资源接收多播数据。Exemplarily, the user equipment measures the highest signal strength of SSB6, and the user equipment receives downlink control information according to SSB6. Specifically, the user equipment detects some channel estimation information obtained by detecting SSB6, such as delay spread and Doppler frequency shift, etc., to receive CORESET X, receive downlink control information from the search space mapped to CORESET X, and then pass the downlink The frequency domain resources indicated by the control information receive multicast data.
网络设备可以基于不同用户设备的测量结果合理设置该MAC CE,确保接收多播的用户设备都能确定接收下行控制信息的信号。The network device can reasonably set the MAC CE based on the measurement results of different user equipments, so as to ensure that the user equipments receiving the multicast can all determine to receive the downlink control information signal.
如果用户设备通过该MAC CE获得的用于接收下行控制信息的信号是SSB5、SSB6和SSB7,但是用户设备发现他们的信号质量均低于阈值,即用户设备不能通过SSB5、SSB6和SSB7准确接收到多播的下行控制信息。此时,用户设备可以向网络设备指示接收下行控制信息的信号低于阈值或者需要更新。具体地,用户设备可以向网络设备上报此时所测得最强的一个或多个服务小区中的SSB,以便网络设备调整接收下行控制信息的信号,即调整CORESET X的传输状态标识。If the signals used to receive downlink control information obtained by the user equipment through the MAC CE are SSB5, SSB6 and SSB7, but the user equipment finds that their signal quality is lower than the threshold, that is, the user equipment cannot accurately receive through SSB5, SSB6 and SSB7 Multicast downlink control information. At this time, the user equipment may indicate to the network equipment that the signal of the received downlink control information is lower than the threshold or needs to be updated. Specifically, the user equipment can report the strongest SSBs in one or more serving cells measured at this time to the network equipment, so that the network equipment can adjust the signal for receiving downlink control information, that is, adjust the transmission status identifier of CORESET X.
上述详细阐述了本申请实施例的方法,下面提供本申请实施例的装置。The method of the embodiment of the present application has been described in detail above, and the device of the embodiment of the present application is provided below.
请参阅图6,图6是本申请实施例提供的一种用户设备的结构示意图。如图6所示,上述用户设备60包括接收单元601、确定单元602、接收单元603以及发送单元604,各个单元的描述如下:Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a user equipment provided by an embodiment of the present application. As shown in FIG. 6, the user equipment 60 includes a receiving unit 601, a determining unit 602, a receiving unit 603, and a sending unit 604. The description of each unit is as follows:
接收单元601,用于接收网络设备发送的第一指示信息,上述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号,上述N为大于或等于1的整数;The receiving unit 601 is configured to receive first indication information sent by the network device, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, and the above N is an integer greater than or equal to 1;
确定单元602,用于以上述N个候选参考信号中任一个参考信号作为上述控制资源集的传输状态标识;A determining unit 602, configured to use any one of the N candidate reference signals as the transmission state identifier of the control resource set;
接收单元603,用于根据上述控制资源集的传输状态标识从上述控制资源集接收第一 下行控制信息。The receiving unit 603 is configured to receive the first downlink control information from the control resource set according to the transmission status identifier of the control resource set.
可选地,上述第一指示信息通过单播或多播的方式进行传输。Optionally, the above-mentioned first indication information is transmitted in a unicast or multicast manner.
可选地,上述确定单元602,具体用于在第一时刻以上述N个候选参考信号中的第一参考信号作为上述控制资源集的传输状态标识;Optionally, the determining unit 602 is specifically configured to use the first reference signal among the N candidate reference signals as the transmission state identifier of the control resource set at the first moment;
上述确定单元602,还用于在第二时刻以上述N个候选参考信号中的第二参考信号作为上述控制资源集的传输状态标识;上述第一参考信号与上述第二参考信号为上述N个候选参考信号中的不同信号;The above-mentioned determining unit 602 is further configured to use the second reference signal among the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set at the second moment; the above-mentioned first reference signal and the above-mentioned second reference signal are the above-mentioned N different signals among the candidate reference signals;
上述接收单元603,还用于根据上述控制资源集的传输状态标识从上述控制资源集接收第二下行控制信息。The receiving unit 603 is further configured to receive second downlink control information from the control resource set according to the transmission status identifier of the control resource set.
可选地,上述确定单元602,具体用于以上述N个候选参考信号中的信号质量最好的参考信号作为上述控制资源集的传输状态标识;或者,Optionally, the determining unit 602 is specifically configured to use the reference signal with the best signal quality among the N candidate reference signals as the transmission status identifier of the control resource set; or,
上述确定单元602,具体用于以上述N个候选参考信号中的信号质量超过第一阈值的一个参考信号作为上述控制资源集的传输状态标识;或者,The determining unit 602 is specifically configured to use one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
上述确定单元602,具体用于在上述N个候选参考信号的信号质量均低于第二阈值的情况下,选择任一个候选参考信号作为上述控制资源集的传输状态标识。The determining unit 602 is specifically configured to select any candidate reference signal as the transmission state identifier of the control resource set when the signal qualities of the N candidate reference signals are all lower than the second threshold.
可选地,上述接收单元603,还用于接收上述网络设备发送的第二指示信息,上述第二指示信息指示上述控制资源集的传输状态标识对应K个候选参考信号,上述K为大于或等于1的整数,上述K个候选参考信号与上述N个候选参考信号部分相同或完全不同。Optionally, the receiving unit 603 is further configured to receive second indication information sent by the network device, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, and the above K is greater than or equal to is an integer of 1, and the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
可选地,上述用户设备还包括发送单元604,用于在上述N个候选参考信号的信号质量均低于第三阈值的情况下,向上述网络设备发送第三指示信息;上述第三指示信息指示上述N个候选参考信号的信号质量低于阈值。Optionally, the user equipment further includes a sending unit 604, configured to send third indication information to the network equipment when the signal qualities of the N candidate reference signals are all lower than a third threshold; the third indication information It indicates that the signal quality of the above N candidate reference signals is lower than the threshold.
可选地,上述确定单元602,还用于在上述用户设备同时接收到上述网络设备通过多播方式发送的第四指示信息和通过单播方式发送的第五指示信息的情况下,以上述第五指示信息指示的参考信号作为上述控制资源集的传输状态标识;上述第四指示信息指示所述控制资源集的传输状态标识对应两个或两个以上参考信号;上述第四指示信息指示上述控制资源集的传输状态标识对应一个参考信号。Optionally, the determining unit 602 is further configured to: when the user equipment receives the fourth indication information sent by the network device in multicast mode and the fifth indication information sent in unicast mode at the same time, the above-mentioned first The reference signal indicated by the fifth indication information is used as the transmission status identifier of the control resource set; the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals; the fourth indication information indicates that the control resource set The transmission state identifier of the resource set corresponds to a reference signal.
请参阅图7,图7是本申请实施例提供的一种网络设备的结构示意图。如图7所示,上述网络设备70包括生成单元701、发送单元702以及接收单元703,各个单元的描述如下:Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present application. As shown in FIG. 7, the above-mentioned network device 70 includes a generating unit 701, a sending unit 702, and a receiving unit 703. The description of each unit is as follows:
生成单元701,用于生成第一指示信息;A generating unit 701, configured to generate first indication information;
发送单元702,用于向用户设备发送第一指示信息,上述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号;上述N个候选参考信号中的任一信号可用于上述用户设备接收第一下行控制信息,上述N为大于或等于1的整数;The sending unit 702 is configured to send first indication information to the user equipment, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals; any signal in the above N candidate reference signals can be used for the above user The device receives the first downlink control information, and the above N is an integer greater than or equal to 1;
上述发送单元702,还用于向上述用户设备发送上述第一下行控制信息。The sending unit 702 is further configured to send the first downlink control information to the user equipment.
可选地,上述第一指示信息通过单播或多播的方式进行传输。Optionally, the above-mentioned first indication information is transmitted in a unicast or multicast manner.
可选地,上述发送单元702,还用于向上述用户设备发送第二指示信息,上述第二指示信息指示上述控制资源集的传输状态标识对应K个候选参考信号;上述K为大于或等于 1的整数;上述K个候选参考信号与上述N个候选参考信号部分相同或完全不同。Optionally, the sending unit 702 is further configured to send second indication information to the user equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals; the above K is greater than or equal to 1 is an integer; the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
可选地,上述网络设备还包括接收单元703,用于接收上述用户设备发送的第三指示信息,上述第三指示信息指示上述N个候选参考信号的信号质量低于阈值。Optionally, the network device further includes a receiving unit 703, configured to receive third indication information sent by the user equipment, where the third indication information indicates that the signal quality of the N candidate reference signals is lower than a threshold.
可选地,上述第三指示信息包括上述用户设备测得当前所在服务小区中信号质量较好的Y个参考信号,上述Y为大于或等于1的整数。Optionally, the third indication information includes Y reference signals with better signal quality in the serving cell where the user equipment is currently located, where Y is an integer greater than or equal to 1.
请参阅图8,图8是本申请实施例提供的一种通信装置的结构示意图。图8所示的通信装置80可以是上述用户设备60,也可以是上述网络设备70。Please refer to FIG. 8 . FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 80 shown in FIG. 8 may be the above-mentioned user equipment 60 or the above-mentioned network device 70 .
如图8所示。该通信装置80包括至少一个处理器802,用于实现本申请实施例提供的方法中用户设备的功能;或者,用于实现本申请实施例提供的方法中网络设备的功能。该通信装置80还可以包括收发器801。收发器801用于通过传输介质和其他设备/装置进行通信。处理器802利用收发器801收发数据和/或信令,并用于实现上述方法实施例中的方法。As shown in Figure 8. The communication device 80 includes at least one processor 802, configured to implement the functions of the user equipment in the method provided in the embodiment of the present application; or, configured to implement the function of the network device in the method provided in the embodiment of the present application. The communication device 80 may also include a transceiver 801 . The transceiver 801 is used to communicate with other devices/devices via transmission media. The processor 802 uses the transceiver 801 to send and receive data and/or signaling, and is used to implement the methods in the foregoing method embodiments.
可选地,通信装置80还可以包括至少一个存储器803,用于存储程序指令和/或数据。存储器803和处理器802耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接,可以是电性,机械或其它的形式,用于装置、单元或模块之间的信息交互。处理器802可能和存储器803协同操作。处理器802可能执行存储器803中存储的程序指令。该至少一个存储器中的至少一个可以包括于处理器中。Optionally, the communication device 80 may further include at least one memory 803 for storing program instructions and/or data. The memory 803 is coupled to the processor 802 . The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. Processor 802 may cooperate with memory 803 . Processor 802 may execute program instructions stored in memory 803 . At least one of the at least one memory may be included in the processor.
本申请实施例中不限定上述收发器801、处理器802以及存储器803之间的具体连接介质。本申请实施例在图8中以存储器803、处理器802以及收发器801之间通过总线804连接,总线在图8中以粗线表示,其它部件之间的连接方式,仅是进行示意性说明,并不引以为限。该总线可以分为地址总线、数据总线、控制总线等。为便于表示,图8中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。In this embodiment of the present application, a specific connection medium among the transceiver 801, the processor 802, and the memory 803 is not limited. In the embodiment of the present application, in FIG. 8, the memory 803, the processor 802, and the transceiver 801 are connected through a bus 804. The bus is represented by a thick line in FIG. 8, and the connection mode between other components is only for schematic illustration. , is not limited. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 8 , but it does not mean that there is only one bus or one type of bus.
在本申请实施例中,处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。In this embodiment of the application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
可理解,在通信装置80为上述用户设备60时,实现接收单元601、确定单元602、接收单元603以及发送单元604的功能。或者,在通信装置80为上述网络设备70时,实现生成单元701、发送单元702以及接收单元703的功能。It can be understood that, when the communication device 80 is the above-mentioned user equipment 60, functions of the receiving unit 601, the determining unit 602, the receiving unit 603, and the sending unit 604 are realized. Alternatively, when the communication device 80 is the above-mentioned network device 70 , functions of the generating unit 701 , the sending unit 702 and the receiving unit 703 are implemented.
请参阅图9,图9是本申请实施例提供的另一种用户设备的结构示意图。如图9所示,上述用户设备90包括接收单元901、确定单元902以及发送单元903,各个单元的描述如下:Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of another user equipment provided by an embodiment of the present application. As shown in FIG. 9, the user equipment 90 above includes a receiving unit 901, a determining unit 902, and a sending unit 903. The description of each unit is as follows:
接收单元901,用于接收网络设备发送的第一指示信息,上述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号,上述N为大于或等于1的整数;The receiving unit 901 is configured to receive first indication information sent by the network device, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1;
确定单元902,用于以上述N个候选参考信号中任一个参考信号作为上述控制资源集的传输状态标识;A determining unit 902, configured to use any one of the N candidate reference signals as the transmission state identifier of the control resource set;
上述接收单元901,还用于根据上述控制资源集的传输状态标识从上述控制资源集接收第一下行控制信息。The receiving unit 901 is further configured to receive first downlink control information from the control resource set according to the transmission status identifier of the control resource set.
可选地,上述第一指示信息通过单播或多播的方式进行传输。Optionally, the above-mentioned first indication information is transmitted in a unicast or multicast manner.
可选地,上述确定单元902,具体用于在第一时刻以上述N个候选参考信号中的第一参考信号作为上述控制资源集的传输状态标识;Optionally, the determining unit 902 is specifically configured to use the first reference signal among the N candidate reference signals as the transmission state identifier of the control resource set at the first moment;
上述确定单元902,还用于在第二时刻以上述N个候选参考信号中的第二参考信号作为上述控制资源集的传输状态标识;上述第一参考信号与上述第二参考信号为上述N个候选参考信号中的不同信号;The above-mentioned determining unit 902 is further configured to use the second reference signal among the above-mentioned N candidate reference signals as the transmission state identifier of the above-mentioned control resource set at the second moment; the above-mentioned first reference signal and the above-mentioned second reference signal are the above-mentioned N different signals among the candidate reference signals;
上述接收单元901,还用于根据上述控制资源集的传输状态标识从上述控制资源集接收第二下行控制信息。The receiving unit 901 is further configured to receive second downlink control information from the control resource set according to the transmission status identifier of the control resource set.
可选地,上述确定单元902,具体用于以上述N个候选参考信号中的信号质量最好的参考信号作为上述控制资源集的传输状态标识;或者,Optionally, the determining unit 902 is specifically configured to use the reference signal with the best signal quality among the N candidate reference signals as the transmission status identifier of the control resource set; or,
上述确定单元902,具体用于以上述N个候选参考信号中的信号质量超过第一阈值的一个参考信号作为上述控制资源集的传输状态标识;或者,The determining unit 902 is specifically configured to use one of the N candidate reference signals whose signal quality exceeds the first threshold as the transmission status identifier of the control resource set; or,
上述确定单元902,具体用于在上述N个候选参考信号的信号质量均低于第二阈值的情况下,选择任一个候选参考信号作为上述控制资源集的传输状态标识。The determining unit 902 is specifically configured to select any candidate reference signal as the transmission status identifier of the control resource set when the signal qualities of the N candidate reference signals are all lower than the second threshold.
可选地,上述接收单元901,还用于接收上述网络设备发送的第二指示信息,上述第二指示信息指示上述控制资源集的传输状态标识对应K个候选参考信号,上述K为大于或等于1的整数,上述K个候选参考信号与上述N个候选参考信号部分相同或完全不同。Optionally, the receiving unit 901 is further configured to receive second indication information sent by the network device, the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, and the above K is greater than or equal to is an integer of 1, and the above K candidate reference signals are partly the same as or completely different from the above N candidate reference signals.
可选地,上述用户设备还包括发送单元903,用于在上述N个候选参考信号的信号质量均低于第三阈值的情况下,向上述网络设备发送第三指示信息;上述第三指示信息指示上述N个候选参考信号的信号质量低于阈值。Optionally, the user equipment further includes a sending unit 903, configured to send third indication information to the network equipment when the signal qualities of the N candidate reference signals are all lower than a third threshold; the third indication information It indicates that the signal quality of the above N candidate reference signals is lower than the threshold.
可选地,上述确定单元902,还用于在上述用户设备同时接收到上述网络设备通过多播方式发送的第四指示信息和通过单播方式发送的第五指示信息的情况下,以上述第五指示信息指示的参考信号作为上述控制资源集的传输状态标识;上述第四指示信息指示所述控制资源集的传输状态标识对应两个或两个以上参考信号;上述第四指示信息指示上述控制资源集的传输状态标识对应一个参考信号。Optionally, the determining unit 902 is further configured to, when the user equipment receives the fourth indication information sent by the network device in multicast mode and the fifth indication information sent in unicast mode at the same time, use the above-mentioned first The reference signal indicated by the fifth indication information is used as the transmission status identifier of the control resource set; the fourth indication information indicates that the transmission status identifier of the control resource set corresponds to two or more reference signals; the fourth indication information indicates that the control resource set The transmission state identifier of the resource set corresponds to a reference signal.
在通信装置80为上述用户设备90时,实现接收单元901、确定单元902、以及发送单元903的功能。When the communication device 80 is the above-mentioned user equipment 90, functions of the receiving unit 901, the determining unit 902, and the sending unit 903 are implemented.
本申请还提供一种计算机可读存储介质,该计算机可读存储介质中存储有计算机代码,当计算机代码在计算机上运行时,使得计算机执行上述实施例的方法。The present application also provides a computer-readable storage medium, where computer codes are stored in the computer-readable storage medium, and when the computer codes are run on the computer, the computer is made to execute the methods of the above-mentioned embodiments.
本申请还提供一种计算机程序产品,该计算机程序产品包括计算机代码或计算机程序,当该计算机代码或计算机程序在计算机上运行时,使得上述实施例中的方法被执行。The present application also provides a computer program product, the computer program product includes computer code or computer program, and when the computer code or computer program is run on a computer, the methods in the above embodiments are executed.
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以上述权利要求的保护范围为准。The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the above claims.
Claims (20)
- 一种下行控制信息的接收方法,其特征在于,所述方法包括:A method for receiving downlink control information, characterized in that the method comprises:用户设备接收网络设备发送的第一指示信息,所述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号,所述N为大于或等于1的整数;The user equipment receives first indication information sent by the network equipment, where the first indication information indicates that the transmission state identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1;所述用户设备以所述N个候选参考信号中任一个参考信号作为所述控制资源集的传输状态标识;The user equipment uses any one of the N candidate reference signals as the transmission state identifier of the control resource set;所述用户设备根据所述控制资源集的传输状态标识从所述控制资源集接收第一下行控制信息。The user equipment receives first downlink control information from the control resource set according to the transmission state identifier of the control resource set.
- 根据权利要求1所述的方法,其特征在于,所述第一指示信息通过单播或多播的方式进行传输。The method according to claim 1, wherein the first indication information is transmitted in a unicast or multicast manner.
- 根据权利要求2所述的方法,其特征在于,在所述N为1的情况下,所述第一指示信息通过多播的方式进行传输;在所述N为大于或等于2的整数的情况下,所述第一指示信息通过单播或多播的方式进行传输。The method according to claim 2, wherein when the N is 1, the first indication information is transmitted by multicast; when the N is an integer greater than or equal to 2 Next, the first indication information is transmitted in a unicast or multicast manner.
- 根据权利要求1所述的方法,其特征在于,所述用户设备以所述N个候选参考信号中任一个参考信号作为所述控制资源集的传输状态标识,包括:The method according to claim 1, wherein the user equipment uses any one of the N candidate reference signals as the transmission status identifier of the control resource set, including:在第一时刻,所述用户设备以所述N个候选参考信号中的第一参考信号作为所述控制资源集的传输状态标识;At the first moment, the user equipment uses the first reference signal among the N candidate reference signals as the transmission state identifier of the control resource set;所述方法还包括:The method also includes:在第二时刻,所述用户设备以所述N个候选参考信号中的第二参考信号作为所述控制资源集的传输状态标识;所述第一参考信号与所述第二参考信号为所述N个候选参考信号中的不同信号;At the second moment, the user equipment uses the second reference signal among the N candidate reference signals as the transmission state identifier of the control resource set; the first reference signal and the second reference signal are the different signals among the N candidate reference signals;所述用户设备根据所述控制资源集的传输状态标识从所述控制资源集接收第二下行控制信息。The user equipment receives second downlink control information from the control resource set according to the transmission state identifier of the control resource set.
- 根据权利要求1所述的方法,其特征在于,所述用户设备以所述N个候选参考信号中任一个参考信号作为所述控制资源集的传输状态标识,包括:The method according to claim 1, wherein the user equipment uses any one of the N candidate reference signals as the transmission status identifier of the control resource set, including:所述用户设备以所述N个候选参考信号中的信号质量最好的参考信号作为所述控制资源集的传输状态标识;或者,The user equipment uses the reference signal with the best signal quality among the N candidate reference signals as the transmission state identifier of the control resource set; or,所述用户设备以所述N个候选参考信号中的信号质量超过第一阈值的一个参考信号作为所述控制资源集的传输状态标识;或者,The user equipment uses one reference signal whose signal quality exceeds a first threshold among the N candidate reference signals as the transmission status identifier of the control resource set; or,在所述N个候选参考信号的信号质量均低于第二阈值的情况下,所述用户设备选择任一个候选参考信号作为所述控制资源集的传输状态标识。In the case that the signal qualities of the N candidate reference signals are all lower than the second threshold, the user equipment selects any one candidate reference signal as the transmission state identifier of the control resource set.
- 根据权利要求1-5中任一项所述的方法,其特征在于,所述方法还包括:The method according to any one of claims 1-5, wherein the method further comprises:所述用户设备接收所述网络设备发送的第二指示信息,所述第二指示信息指示所述控制资源集的传输状态标识对应K个候选参考信号,所述K为大于或等于1的整数,所述K个候选参考信号与所述N个候选参考信号部分相同或完全不同。The user equipment receives second indication information sent by the network equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals, where K is an integer greater than or equal to 1, The K candidate reference signals are partly the same as or completely different from the N candidate reference signals.
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:The method according to claim 1, further comprising:在所述N个候选参考信号的信号质量均低于第三阈值的情况下,所述用户设备向所述网络设备发送第三指示信息;所述第三指示信息指示所述N个候选参考信号的信号质量低 于阈值。When the signal qualities of the N candidate reference signals are all lower than a third threshold, the user equipment sends third indication information to the network equipment; the third indication information indicates the N candidate reference signals The signal quality is below the threshold.
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:The method according to claim 1, further comprising:在所述用户设备同时接收到所述网络设备通过多播方式发送的第四指示信息和通过单播方式发送的第五指示信息的情况下,所述用户设备以所述第五指示信息指示的参考信号作为所述控制资源集的传输状态标识;所述第四指示信息指示所述控制资源集的传输状态标识对应两个或两个以上参考信号;所述第五指示信息指示所述控制资源集的传输状态标识对应一个参考信号。When the user equipment simultaneously receives the fourth indication information sent by the network device in a multicast manner and the fifth indication information sent in a unicast manner, the user equipment indicates with the fifth indication information The reference signal is used as the transmission status identifier of the control resource set; the fourth indication information indicates that the transmission status identification of the control resource set corresponds to two or more reference signals; the fifth indication information indicates that the control resource A set of transmission state identifiers corresponds to a reference signal.
- 一种信息的发送方法,其特征在于,所述方法包括:A method for sending information, characterized in that the method includes:网络设备向用户设备发送第一指示信息,所述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号;所述N个候选参考信号中的任一信号可用于所述用户设备接收第一下行控制信息,所述N为大于或等于1的整数;The network device sends first indication information to the user equipment, where the first indication information indicates that the transmission status identifier of the control resource set corresponds to N candidate reference signals; any signal in the N candidate reference signals can be used for the user equipment receiving first downlink control information, where N is an integer greater than or equal to 1;所述网络设备向所述用户设备发送所述第一下行控制信息。The network device sends the first downlink control information to the user equipment.
- 根据权利要求9所述的方法,其特征在于,所述第一指示信息通过单播或多播的方式进行传输。The method according to claim 9, wherein the first indication information is transmitted in a unicast or multicast manner.
- 根据权利要求10所述的方法,其特征在于,在所述N为1的情况下,所述第一指示信息通过多播的方式进行传输;在所述N为大于或等于2的整数的情况下,所述第一指示信息通过单播或多播的方式进行传输。The method according to claim 10, wherein when the N is 1, the first indication information is transmitted by multicast; when the N is an integer greater than or equal to 2 Next, the first indication information is transmitted in a unicast or multicast manner.
- 根据权利要求9或10所述的方法,其特征在于,所述方法还包括:The method according to claim 9 or 10, characterized in that the method further comprises:所述网络设备向所述用户设备发送第二指示信息,所述第二指示信息指示所述控制资源集的传输状态标识对应K个候选参考信号;所述K为大于或等于1的整数;所述K个候选参考信号与所述N个候选参考信号部分相同或完全不同。The network device sends second indication information to the user equipment, where the second indication information indicates that the transmission state identifier of the control resource set corresponds to K candidate reference signals; the K is an integer greater than or equal to 1; The K candidate reference signals are partly the same as or completely different from the N candidate reference signals.
- 根据权利要求9所述的方法,其特征在于,所述方法还包括:The method according to claim 9, characterized in that the method further comprises:所述网络设备接收所述用户设备发送的第三指示信息,所述第三指示信息指示所述N个候选参考信号的信号质量低于阈值。The network device receives third indication information sent by the user equipment, where the third indication information indicates that signal qualities of the N candidate reference signals are lower than a threshold.
- 一种用户设备,其特征在于,所述装置包括:A user equipment, characterized in that the device includes:接收单元,用于接收网络设备发送的第一指示信息,所述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号,所述N为大于或等于1的整数;The receiving unit is configured to receive first indication information sent by the network device, where the first indication information indicates that the transmission status identifier of the control resource set corresponds to N candidate reference signals, where N is an integer greater than or equal to 1;确定单元,用于以所述N个候选参考信号中任一个参考信号作为所述控制资源集的传输状态标识;A determining unit, configured to use any one of the N candidate reference signals as the transmission status identifier of the control resource set;接收单元,用于根据所述控制资源集的传输状态标识从所述控制资源集接收第一下行控制信息。A receiving unit, configured to receive first downlink control information from the control resource set according to the transmission status identifier of the control resource set.
- 一种网络设备,其特征在于,所述装置包括:A network device, characterized in that the device includes:生成单元,用于生成第一指示信息;a generating unit, configured to generate first indication information;发送单元,用于向用户设备发送所述第一指示信息,所述第一指示信息指示控制资源集的传输状态标识对应N个候选参考信号,所述N个候选参考信号中的任一信号可用于所述用户设备接收第一下行控制信息,所述N为大于或等于1的整数;A sending unit, configured to send the first indication information to the user equipment, the first indication information indicating that the transmission state identifier of the control resource set corresponds to N candidate reference signals, and any signal in the N candidate reference signals is available When the user equipment receives first downlink control information, the N is an integer greater than or equal to 1;所述发送单元,还用于向所述用户设备发送所述第一下行控制信息。The sending unit is further configured to send the first downlink control information to the user equipment.
- 一种用户设备,其特征在于,包括:处理器和收发器;A user equipment, characterized by comprising: a processor and a transceiver;所述收发器,用于接收信号或者发送信号;所述处理器,用于执行存储器所存储的计算机执行指令,以使所述用户设备执行如权利要求1-8中任一项所述的方法。The transceiver is configured to receive signals or send signals; the processor is configured to execute computer-executed instructions stored in a memory, so that the user equipment executes the method according to any one of claims 1-8 .
- 一种网络设备,其特征在于,包括:处理器和收发器;A network device, characterized by comprising: a processor and a transceiver;所述收发器,用于接收信号或者发送信号;所述处理器,用于执行存储器所存储的计算机执行指令,以使所述网络设备执行如权利要求9-13中任一项所述的方法。The transceiver is configured to receive signals or send signals; the processor is configured to execute computer-executed instructions stored in a memory, so that the network device executes the method according to any one of claims 9-13 .
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有计算机程序,当所述计算机程序在一个或多个处理器上运行时,使得如权利要求1-8中任一项所述的方法或如权利要求9-13中任一项所述的方法被执行。A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is run on one or more processors, any of claims 1-8 A method according to one or a method according to any one of claims 9-13 is carried out.
- 一种芯片,其特征在于,所述芯片应用于用户设备,所述芯片包括一个或多个处理器,所述处理器用于调用计算机指令以使得所述用户设备执行如权利要求1-8中任一项所述的方法。A chip, characterized in that the chip is applied to user equipment, and the chip includes one or more processors, and the processors are used to call computer instructions so that the user equipment executes any of the following claims 1-8. one of the methods described.
- 一种芯片,其特征在于,所述芯片应用于网络设备,所述芯片包括一个或多个处理器,所述处理器用于调用计算机指令以使得所述网络设备执行如权利要求9-13中任一项所述的方法。A chip, characterized in that the chip is applied to a network device, and the chip includes one or more processors, and the processor is used to invoke computer instructions so that the network device performs any of the following claims 9-13. one of the methods described.
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