CN114726409A - Configuration method, base station, terminal and medium for multi-beam transmission - Google Patents
Configuration method, base station, terminal and medium for multi-beam transmission Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The invention discloses a configuration method, a base station, a terminal and a medium of multi-beam transmission, comprising the following steps: the base station schedules data transmission on the PDSCH through a PDCCH or DCI on a first CORESET, wherein the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated. The invention avoids time delay caused by waiting time threshold or reducing effective time of MAC CE, and the like, so that the base station can update transmission direction more quickly and transmit data in the direction. The problem that the transmission direction is not matched with the target direction due to the default spatial relationship in the existing protocol can be avoided.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a configuration method, a base station, a terminal, and a medium for multi-beam transmission.
Background
At present, the demand for further enhancement research on MIMO (Multiple Input Multiple Output) technology is mainly oriented to the enhancement of higher moving speed (high mobility), and data, control channels, uplink and downlink, intra-band CA (in-band CA; CA: Carrier Aggregation, Carrier Aggregation), and the like can be considered.
The design goal is to hope to quickly update the data direction of PDCCH (Physical Downlink control Channel) and PDSCH (Physical Downlink Shared Channel), and to ensure better data transmission in case of high-speed movement, i.e. support for higher mobility.
The defects in the prior art are as follows: there is no guarantee that the CORESET ID, which is the smallest for the UE scheduling direction each time, is the scheduling direction, and it is highly likely that it is not scheduled in the required direction if 2 CORESETs repeat in time.
Disclosure of Invention
The invention provides a configuration method, a base station, a terminal and a medium for multi-beam transmission, which are used for reducing time delay generated in a PDSCH scheduling process.
The invention provides the following technical scheme:
a method of configuring multi-beam transmission, comprising:
the base station schedules data transmission on the PDSCH through a PDCCH or DCI on a first CORESET, wherein the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
the antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In the implementation, one or the combination of the following settings is also included:
the base station transmits PDSCH on a symbol behind a symbol in which a first CORESET and/or a PDCCH are/is positioned;
an interval between a symbol of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH may be less than a first time threshold, which may be a time or a number of symbols used by a UE to receive PDCCH and apply spatial QCL information, or a timeDurationForQCL;
the downlink control information may not include an indication of TCI;
the downlink control signaling carries a TCI indication, and the terminal can ignore or not analyze the TCI indication.
In implementation, the base station indicates, through one or more MAC CEs, that the first core set and the PDSCH have the same spatial relationship, or that there is an association in the spatial relationship; alternatively, the first and second electrodes may be,
the base station indicates, through an RRC configured first core set, that the PDSCH scheduled on the first core set has the same spatial relationship or that there is an association with the same spatial relationship of the core set.
In implementation, when one MAC CE indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated, the base station indicates the spatial relationship or the TCI state of the first core set and the PDSCH through the one MAC CE at the same time; or the like, or, alternatively,
the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicates that the spatial relationship or the TCI state of the first CORESET is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicates that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
A method of configuring multi-beam transmission, comprising:
the terminal determines data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
the terminal determines that the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain, and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with a spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of CORESET.
In the implementation, the method further comprises one or the combination of the following steps:
the terminal receives a PDSCH transmitted on a symbol behind a symbol where a first CORESET and/or a PDCCH are/is located;
the interval between the symbols of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH is smaller than a first time threshold, wherein the first time threshold is the time or the number of symbols used by UE for receiving PDCCH and application space QCL information, or the time DurationForQCL;
the terminal does not expect the downlink DCI to carry the TCI indication information;
the terminal ignores or does not resolve the TCI indication in the downlink DCI.
In implementation, if the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through one or more MAC CEs, the terminal determines that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
if the base station indicates that the PDSCH scheduled on the first core set has the same spatial relationship with the core set through the first core set configured by the RRC, or the spatial relationship is associated, the terminal determines that the first core set and the PDSCH have the same spatial relationship with each other, or the spatial relationship is associated with each other.
In implementation, when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through one MAC CE, if the base station indicates the spatial relationship or the TCI state of the first core set and the PDSCH through one MAC CE at the same time, the terminal determines that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated; or the like, or, alternatively,
when the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the first CORESET spatial relationship or the TCI state is indicated to be consistent with the PDSCH through a second MAC CE, the terminal determines that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the spatial relationship or the TCI state of the PDSCH indicated through the third MAC CE is consistent with the first core set, the terminal determines that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated.
A base station, comprising:
a processor for reading the program in the memory and executing the following processes:
scheduling data transmission on a PDSCH through a PDCCH or DCI on a first CORESET, wherein the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated;
a transceiver for receiving and transmitting data under the control of the processor.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In the implementation, one or the combination of the following settings is also included:
transmitting a PDSCH on a symbol subsequent to a symbol on which the first CORESET and/or PDCCH is located;
an interval between a symbol of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH may be less than a first time threshold, which may be a time or a number of symbols used by a UE to receive PDCCH and apply spatial QCL information, or a timeDurationForQCL;
the downlink control information may not include an indication of a TCI;
the downlink control signaling carries a TCI indication, and the terminal can ignore or not analyze the TCI indication.
In implementation, the first core set and the PDSCH are indicated by one or more MAC CEs to have the same spatial relationship, or there is an association in the spatial relationship; alternatively, the first and second electrodes may be,
indicating, by a first CORESET configured by RRC, that the PDSCH scheduled on the first CORESET has the same spatial relationship or that there is an association with a spatial relationship of CORESET.
In the implementation process, the first step of the method,
when one MAC CE indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated, the MAC CE simultaneously indicates the spatial relationship or the TCI state of the first CORESET and the PDSCH; or the like, or, alternatively,
indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the first CORESET is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
and indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
A base station, comprising:
a configuration module, configured to schedule data transmission on the PDSCH through the PDCCH or the DCI on the first CORESET, where the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated with the scheduled PDSCH.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In an implementation, the configuration module is further configured to perform one or a combination of the following:
the base station sends the PDSCH on a symbol behind the symbol where the first CORESET and/or the PDCCH are located;
an interval between a symbol of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH may be less than a first time threshold, which may be a time or a number of symbols used by a UE to receive PDCCH and apply spatial QCL information, or a timeDurationForQCL;
the downlink control information may not include an indication of a TCI;
the downlink control signaling carries a TCI indication, and the terminal can ignore or not analyze the TCI indication.
In an implementation, the configuration module is further configured to indicate, by one or more MAC CEs, that the first core set and the PDSCH have the same spatial relationship, or that there is an association in the spatial relationship; alternatively, by means of the RRC configured first core set, it is indicated that the PDSCH scheduled on the first core set has the same spatial relationship or a spatial relationship exists in association with the core set.
In implementation, the configuration module is further configured to indicate, by using one MAC CE, that the first core set and the PDSCH have the same spatial relationship or that the spatial relationship is associated, and the base station simultaneously indicates, by using one MAC CE, the spatial relationship or the TCI state of the first core set and the PDSCH; or the like, or, alternatively,
indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the first CORESET is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
and indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
A terminal, comprising:
a processor for reading the program in the memory, performing the following processes:
determining data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
determining that the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated;
a transceiver for receiving and transmitting data under the control of the processor.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain, and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In the implementation, the method further comprises one or the combination of the following steps:
a terminal receives a PDSCH transmitted on a symbol behind a symbol on which a first CORESET and/or a PDCCH is/are located;
the interval between the symbols of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH is smaller than a first time threshold, wherein the first time threshold is the time or the number of symbols used by UE for receiving PDCCH and application space QCL information, or the time DurationForQCL;
the terminal does not expect the downlink DCI to carry the TCI indication information;
the terminal ignores or does not resolve the TCI indication in the downlink DCI.
In implementation, if the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through one or more MAC CEs, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
if the base station indicates that the PDSCH scheduled on the first core set has the same spatial relationship with the core set through the first core set configured by the RRC, or the spatial relationship is associated, it is determined that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated.
In implementation, when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through one MAC CE, if the base station indicates the spatial relationship or the TCI state of the first core set and the PDSCH through one MAC CE at the same time, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated; or the like, or, alternatively,
when the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the first CORESET spatial relationship or the TCI state is indicated to be consistent with the PDSCH through a second MAC CE, the first CORESET and the PDSCH are determined to have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the spatial relationship or the TCI state of the PDSCH indicated through the third MAC CE is consistent with the first core set, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated.
A terminal, comprising:
a first determining module, configured to determine data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
a second determining module, configured to determine that the scheduled PDSCH has the same spatial relationship or is associated with the first CORESET or the PDCCH of the first CORESET.
In an implementation, the second determining module is further configured to determine whether the parameters according to one or a combination of the following parameters have the same spatial relationship, or the spatial relationships are associated:
doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain, and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In the implementation, one or a combination of the following modules is also included:
a receiving module, configured to receive a PDSCH transmitted on a symbol after a symbol in which a first CORESET and/or a PDCCH are located;
the indication processing module is used for not expecting the TCI indication information carried in the scheduling signaling, or ignoring or not analyzing the TCI indication in the scheduling signaling;
and a time limit processing module, configured to set an interval between a symbol of the PDSCH and downlink control information DCI of the scheduled PDSCH to be smaller than a first time threshold, where the first time threshold is a time or a symbol number used by the UE to receive PDCCH and application space QCL information, or a timeDurationForQCL.
In implementation, the second determining module is further configured to determine that the first core set and the PDSCH have the same spatial relationship or the spatial relationship has the association if the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship has the association through one or more MAC CEs; or, if the base station indicates that the PDSCH scheduled on the first core set has the same spatial relationship with the core set through the first core set configured by the RRC, or the spatial relationship is associated, it is determined that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated.
In implementation, the second determining module is further configured to, when the base station indicates, through one MAC CE, that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated, determine, if the base station indicates, through one MAC CE, the spatial relationship or the TCI state of the first core set and the PDSCH at the same time, that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated; or the like, or, alternatively,
when the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the first CORESET spatial relationship or the TCI state is indicated to be consistent with the PDSCH through a second MAC CE, the first CORESET and the PDSCH are determined to have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the spatial relationship or the TCI state of the PDSCH indicated through the third MAC CE is consistent with the first core set, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated.
A computer-readable storage medium storing a computer program for executing the above-described configuration method of multi-beam transmission.
The invention has the following beneficial effects:
in the technical solution provided in the embodiment of the present invention, since the introduced PDSCH transmission has the same spatial relationship with the PDCCH that schedules the PDSCH or the CORESET where the PDCCH is located, or the spatial relationship is correlated, a time delay caused by a waiting time threshold (timeduration for qcl) or a reduction in the effective time of the MAC CE is avoided, so that the base station can update the transmission direction more quickly and perform data transmission in the direction.
The problem that the transmission direction is not matched with the target direction due to the default spatial relationship in the existing protocol can be avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram illustrating a manner of adjusting a spatial relationship or a propagation direction of a PDCCH and a PDSCH in an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating an implementation of a configuration method for base station side multi-beam transmission according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating an implementation of a configuration method of terminal-side multi-beam transmission according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating an adjustment of a spatial relationship or a propagation direction according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a base station structure according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal structure in an embodiment of the present invention.
Detailed Description
The inventor notices in the process of invention that:
in the conventional scheme, the PDCCH and PDSCH are adjusted in the spatial relationship or the propagation direction as follows.
Fig. 1 is a schematic diagram of an adjustment manner of the PDCCH and the PDSCH with respect to the spatial relationship or the propagation direction, as shown in the figure, taking SSB (Synchronization Signal/physical broadcast channel Signal block (or Synchronization Signal block), Synchronization Signal and PBCH block) as an example, a terminal generally considers that stable energy measurement information can be obtained after 5 measurements, and determines whether the quality of a beam meets the subsequent working requirement or selects a better beam. After the terminal performs 5 or more measurements, the uplink feedback L1-RSRP (L1 reference signal received power) is passed. The base station determines whether to update a CORESET (Control resource set) or a PDSCH according to information fed back by the UE (User Equipment).
In the prior art, the spatial relationship or propagation direction of the CORESET and the PDSCH is updated through an independent MAC CE (Media Access Control unit; MAC: Media Access Control; CE: Control unit, Control Element). Without any enhancement, the base station will send 2 pieces of MAC CE information, respectively, to update the propagation direction or spatial information of CORESET and PDSCH, respectively. The terminal receives the spatial information update of the MAC CE of the CORESET according to a new spatial direction; the PDSCH is further notified of which direction the UE specifically uses, by an indication of a TCI (Transmission Configuration Indicator) in DCI (Downlink Control Information). For the MAC CE message to take effect, the spatial relationship between the corresponding CORESET and the PDSCH needs to take effect after the UE sends uplink ACK (Acknowledgement) information of the MAC CE and waits for 3 ms. In general, it is difficult to ensure that the 2 MAC CEs are transmitted simultaneously and received by the UE accurately at one time. Both transmission and validation of MAC CEs will result in spatial relationship changes that will result in delays.
After that, the UE receives the core set and the PDCCH in the spatial direction newly indicated by the MAC CE, and receives information of the TCI of the corresponding PDSCH on the PDCCH. At this time, it is also necessary to wait for a time threshold (timeduration for qcl) before downlink transmission or reception of the corresponding PDSCH can be performed. The time threshold is mainly used for processing the resolution of the DCI, and the adjustment of the UE to the spatial relationship (QCL, etc.). After completion of reception of the PDSCH, whether or not correct transmission is fed back to the base station.
In the existing mechanism, a configuration method of a beam direction or a spatial relationship (QCL (Quasi co-location), TCI) of a control channel and a data channel is as follows:
beam direction of CORESET:
if RRC (Radio Resource Control) only configures the state of one TCI, CORESET follow the state; however, if the update is performed, only the RRC configuration method is used, which is time consuming.
If the RRC configures the states of multiple TCIs, one of them needs to be indicated with the MAC CE.
If the RRC configures the states of multiple TCIs but there is no indication of MAC CE, then the assumption is made as to the spatial relationship of the SSBs initially accessed.
Beam direction of PDSCH:
RRC configuration + MAC CE indication (selection (optional)), there are 8 states of TCI, and then one of them is indicated by TCI. But the data transmission is also to be greater than or equal to a time threshold (timeduration for qcl).
The RRC configuration is completed but without indication of the MAC CE, the SSB of the initial access is directly adopted.
If the RRC configuration is completed, the MAC CE also indicates, but the DCI indication is met, and then a time threshold (timeduration for qcl) is not reached, the latest slot is used, and the state of TCI of the ID of the minimum CORESET is used.
timeDurationForQCL (QCL duration):
at 120khz, 14 or 28 symbols are occupied, i.e. after 1-2 slots.
Main processing, 1) processing of DCI control information, 2) processing of QCL port adjustment.
The problems of the prior art are as follows: since the PDCCH requires a latency threshold (timeduration format cl) after it can be used for PDSCH transmission, the introduction of the timeduration format qcl results in all high frequency transmissions, almost all across slot scheduling. It is more complicated in base station design and scheduling algorithm, and it needs to consider 2 or more than 3 slots transmission directions and how to schedule simultaneously.
If the time does not satisfy the timeduration formula QCL, the state of the QCL or TCI corresponding to the minimum CORESET ID in the latest slot needs to be searched as a reference of a DMRS (demodulation reference signal) of the PDSCH. On the one hand, it cannot be guaranteed that the CORESET ID, in which the base station is the smallest for the UE scheduling direction each time, is the scheduling direction. When 2 CORESET repeats in time, it is likely that it is not scheduled in the direction of need. In addition, the CORESET #0 cannot always be used for similar transmission. CORESET #0 is mainly associated with SSB and carries much common control information, and cannot always be used to carry UE specific traffic transmission, and its capacity is also limited.
In addition, as described in the above section, the spatial relationship between the CORESET and the PDSCH is updated by two MAC CEs, which cannot ensure that the two MAC CEs are transmitted simultaneously or the time difference is within an acceptable range, so as to reduce the time delay. The effective time of the MAC CE of 3ms is unavoidable.
Namely: since the PDCCH requires a latency threshold (timeduration format cl) after it can be used for PDSCH transmission, the introduction of the timeduration format qcl results in all high frequency transmissions, almost all across slot scheduling. If the time does not meet the timeDurationForQCL, the state of the QCL or TCI corresponding to the minimum CORESET ID in the nearest slot needs to be searched and used as the reference of the DMRS of the PDSCH; on the one hand, it cannot be guaranteed that the CORESET ID, in which the base station is the smallest for the direction in which the UE schedules at a time, is the direction in which the UE schedules, and when if 2 CORESETs repeat in time, it is highly likely that they are not scheduled in the required direction.
The spatial relationship between the CORESET and the PDSCH is updated by two MAC CEs, which cannot ensure that the two MAC CEs are transmitted simultaneously or the time difference is within an acceptable range, so as to reduce the time delay.
The following describes embodiments of the present invention with reference to the drawings.
In the description process, the implementation of the terminal and the base station side will be described separately, and then an example of the implementation of the two in cooperation will be given to better understand the implementation of the scheme given in the embodiment of the present invention. Such an explanation does not mean that the two must be implemented together or separately, and actually, when the terminal and the base station are implemented separately, they each solve the problem on their own side, and when the two are used in combination, a better technical effect is obtained.
Fig. 2 is a schematic flow chart of an implementation of a configuration method for base station side multi-beam transmission, as shown in the figure, the method may include:
step 201, the base station schedules data transmission on the PDSCH through the PDCCH or DCI on the first core set, where the scheduled PDSCH has the same spatial relationship with the first core set or the PDCCH of the first core set, or there is an association (association) in the spatial relationship.
Specifically, the first core is a specific core, or a specific core, and in the embodiment, it is also referred to as core X.
Fig. 3 is a schematic flow chart of an implementation of a configuration method for terminal-side multi-beam transmission, as shown in the figure, the method may include:
Specifically, the base station schedules the PDSCH through the PDCCH or DCI on the CORESET X, and the corresponding PDSCH and the corresponding CORESET or PDCCH adopt the same spatial relationship, or the spatial relationship is associated.
In implementation, one or a combination of the following settings can be further included on the base station side:
the base station sends the PDSCH on a symbol behind the symbol where the first CORESET and/or the PDCCH are located;
an interval between a symbol of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH may be less than a first time threshold, which may be a time or a number of symbols used by a UE to receive PDCCH and apply spatial QCL information, or a timeDurationForQCL;
the downlink control information may not include an indication of a TCI;
the downlink control signaling carries a TCI indication, and the terminal can ignore or not interpret the TCI indication.
For the terminal side, one or a combination of the following steps is further included:
a terminal receives a PDSCH transmitted on a symbol behind a symbol on which a first CORESET and/or a PDCCH is/are located;
the interval between the symbol of the PDSCH and the Downlink Control Information (DCI) of the scheduled PDSCH is smaller than a first time threshold, wherein the first time threshold is the time or symbol number of the UE for receiving the PDCCH and the application space QCL information, or the time DurationForQCL;
the terminal does not expect the downlink DCI to carry the TCI indication information;
the terminal ignores or does not resolve the TCI indication in the downlink DCI.
Fig. 4 is a schematic diagram of an adjustment manner of the spatial relationship or the propagation direction, as shown in the figure, taking SSB as an example, the terminal may consider that relatively stable energy measurement information can be obtained after 5 measurements, and determine whether the quality of the beam meets the subsequent working requirement or selects a better beam. After the terminal performs 5 or more measurements, the uplink feedback L1-RSRP is used. And the base station judges whether the CORESET or the PDSCH needs to be updated or not according to the information fed back by the UE.
Specifically, the terminal may have the following differences:
PDSCH is transmitted several symbols after the corresponding CORESET X.
The terminal may assume that the PDSCH employs the same transmit and/or receive spatial filtering as the scheduled UE.
The PDSCH corresponding to CORESET X and CORESET are configured in the same TCI state, specifically as follows:
1. the same TCI-StateId (TCI type identification);
2. the states that can be configured to be the same TCI, that is, the same ref RS (reference signal) and type of QCL;
3. the direct-write PDSCH shares the same beam with CORESET;
4. the DMRSs for PDSCH may be associated to DMRSs for CORESET.
The indication of TCI may not be included in the PDCCH or may be ignored or unresolved even if carrying an indication of TCI.
The UE does not need to wait for the time threshold (timeduration for qcl) required for the TCI of the corresponding PDCCH schedule.
The terminal may buffer subsequent data symbols after receiving CORESET X.
The terminal may receive the scheduled PDSCH within the same slot as the PDCCH.
In implementation, the base station may indicate, through one or more MAC CEs, that the first core set and the PDSCH have the same spatial relationship, or that there is an association in the spatial relationship; alternatively, the first and second electrodes may be,
the base station may also indicate, through the RRC-configured first core set, that the PDSCH scheduled on the first core set has the same spatial relationship or that there is an association with the spatial relationship of the core set.
Specifically, the base station configures or updates the spatial relationship between CORESET X and PDSCH through one or more MAC CEs.
When the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through one MAC CE, the base station simultaneously indicates the spatial relationship or the TCI state of the first CORESET and the PDSCH through one MAC CE; or the like, or, alternatively,
the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicates that the spatial relationship or the TCI state of the first CORESET is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicates that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
Specifically, the first MAC CE directly indicates that the CORESET and the PDSCH adopt the same spatial relationship, for example, the CORESET, the PDSCH, and the TCI # 1 are configured simultaneously;
the second MAC indicates that the CORESET is the same as the PDSCH, i.e., directly indicates that the CORESET is the same as the PDSCH, but does not indicate what the TCI status is;
the third MAC indicates that the PDSCH has the same spatial relationship with CORESET X, but does not give what the TCI state of the PDSCH is.
In a specific implementation, when the base station indicates that the spatial relationship between the core set X and the PDSCH is the same or the spatial relationship is associated through one MAC CE, the base station indicates that the spatial relationship between the core set X and the PDSCH is the same through one MAC CE at the same time, so as to indicate that the spatial relationship between the core set X and the PDSCH is the same.
Specifically, if one MAC CE indicates the spatial relationship between the CORESET X and the PDSCH at the same time, it may indicate that the PDSCH scheduled on the CORESET X has the same spatial relationship with the CORESET X or that there is a correlation between the spatial relationships, etc.
1. The MAC CE may be a spatial relationship configuring the CORESET or PDSCH.
If the spatial relationship of the CORESET is configured, the spatial relationship of the PDSCH scheduled correspondingly may be the same as the CORESET or the spatial relationship may be associated;
if the spatial relationship of the PDSCH is configured, the spatial relationship between the corresponding CORESET and the PDSCH may be the same or there may be an association.
The spatial relationship is the same as the information can be indicated by a part.
2. In a spatial relationship:
the PDSCH and the CORESET may transmit or receive using the same beam;
or may share the same reference beam or reference signal (reference RS).
In specific implementation, the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is related through a plurality of MAC CEs, and indicates that the first core set spatial relationship or the TCI state is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicates that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
Specifically, the following may be indicated by a plurality of MAC CEs:
indicating the same spatial relationship with PDSCH on the MAC CE corresponding to the spatial relationship of CORESET X, or,
the same spatial relationship as CORESET X is indicated on the MAC CE of the spatial relationship of PDSCH.
After the configuration is completed, the operation can be performed according to the flow of fig. 2 and 3.
In implementation, the base station indicates, through an RRC-configured first core set, that the PDSCH scheduled on the first core set has the same spatial relationship or an association exists with the spatial relationship of the core set.
Specifically, through the RRC configured core set X, it indicates that the PDSCH scheduled on the core set X has the same or similar spatial relationship with the core set or there is an association with the core set. After the configuration is completed, the operation can be directly carried out according to the flow of fig. 2 and 3.
In this state, if the MAC CE updates the spatial relationship of core set X, the spatial relationship of the PDSCH changes according to the spatial relationship of core set X. The PDSCH scheduled on the corresponding CORESET X has the same spatial relationship or assumption of QCL as CORESET X.
In practice, having the same spatial relationship, or having an association of spatial relationships, may mean that the parameters of one or a combination of the following parameters are the same:
doppler shift (Doppler shift), Doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread), and spatial RX parameters (spatial RX parameters);
antenna port quasi co-location (Antenna port quasi co-location);
QCL type (QCL (quartz co-location) types);
QCL assumption (QCL assumption);
TCI states (TCI states);
spatial domain transmission filter (spatial domain transmit filter), and spatial domain receive filter (spatial domain receive filter);
a spatial relationship (spatial relationship) parameter;
spatial relationship information (SpatialRelationInfo).
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
The following is an example.
Example 1
In this example, CORESET X is configured by RRC.
The base station configures a specific CORESET X, or in the RRC indication or configuration of the CORESET X, indicates a certain state, indicating that the CORESET X is available for a scenario of high speed movement, or indicating that the PDSCH scheduled on the CORESET X has the same TCI state as the CORESET X, or that the downlink employs the same transmit filtering, beam, transmission direction, or precoding, or the UE may employ the same receive filtering, beam, receive direction, or precoding as the CORESET X when receiving the PDSCH, or has the same TCI state (TCI state) as the CORESET.
The terminal may directly receive data of the corresponding PDSCH without waiting for a time alignment for QCL (timedutionformqcl). The UE finds DCI information of a downlink scheduling grant (DL grant) for its PDSCH in a PDCCH on the core set X, and then directly receives the DCI information on the corresponding PDSCH according to the transmission direction of the core set X, including a downlink transmission direction and/or a reception direction.
The PDSCH may be located several symbols after the PDCCH on CORESET X.
The terminal may directly buffer the following N symbols after receiving several symbols of the PDCCH on the CORESET X, and perform demodulation of the corresponding PDSCH after the DCI is correctly demodulated. The PDCCH on CORESET X may occupy the slot 1, 2 symbols, the 3 rd symbol may be used for demodulation of DMRS corresponding to PDSCH, and the 4 th symbol and several following symbols may be used for data transmission to the user.
The DCI on the PDCCH may not include indication information of the TCI.
Alternatively, if DCI within the PDCCH carries TCI status information, the UE may directly ignore the TCI information because the PDCCH is transmitted on CORESET X.
Or, if the PDCCH carries the DCI information, the UE may perform transmission on the PDSCH behind the PDCCH (for example, the PDCCH occupies 1 st and 2 nd symbols, the 3 rd symbol is used for DMRS transmission of the PDSCH, and the 4 th to 14 th symbols may be used for transmission of the user in the direction), and perform another downlink data transmission on the corresponding PDSCH after the spatially adjusted time (for example, timeduration for qcl). The data content of the transmission may be the same as or different from the content of the transmission described above.
When configuring the CORESET X by RRC, it may be configured within the CORESET. That is, the configuration of CORESET includes a field indicating that the PDSCH therein has the same spatial relationship with CORESET.
When configuring the CORESET X by RRC, it may be configured in PDCCH config.
Example 2
In this example, when the base station indicates that the spatial relationship between the first core set and the PDSCH is the same, or there is a correspondence, or an association through one MAC CE, the base station indicates the spatial relationship or the TCI state between the first core set and the PDSCH through one MAC CE at the same time, so as to indicate that the first core set and the PDSCH have the same spatial relationship, or there is a correspondence, or an association, specifically, the spatial relationship (and/or the TCI state) between core set X and the PDSCH is configured or indicated through the MAC CE at the same time, for example, the TCI state id is 0.
The base station configures a certain CORESET. The base station indicates the spatial relationship between the core set X and the PDSCH in one MAC CE message at the same time, which means that the PDSCH scheduled through the PDCCH on the core set X has the same spatial relationship with the core set X, and the TCI state id is 0.
With the PDSCH scheduled by PDCCH on this CORESET X, the UE may consider that PDSCH has the same spatial relationship with CORESET X. The UE may directly receive and demodulate the PDSCH in the slot where the PDCCH is located, or may receive data on several subsequent symbols of the PDCCH.
Example 3
In this example, when the base station indicates that the spatial relationship between the first core set and the PDSCH is the same, or there is a correspondence, or an association through a plurality of MAC CEs, the base station indicates that the spatial relationship or the TCI state corresponding to the first core set has the same spatial relationship and/or the same TCI state as the PDSCH, specifically, the spatial relationship between the core set X and the PDSCH is configured through the MAC CE, and the MAC CE of the PDSCH indicates ID information of the core set X.
The base station configures CORESET X. The MAC CE configuring or activating the spatial relationship of the PDSCH indicates that the PDSCH transmission may be transmitted or received according to the spatial relationship of CORESET X.
The UE may transmit or receive using the spatial relationship of CORESET X for the scheduled PDSCH on CORESET X. The transmission on other CORESET still needs to be carried out according to the existing indication mode of the TCI.
Example 4
In this example, when the base station indicates that the spatial relationship between the first core set and the PDSCH is the same, or there is a correspondence, or a correlation through a plurality of MAC CEs, the base station indicates that the spatial relationship between the PDSCH and the PDSCH has the same spatial relationship and/or the same TCI state as the first core set on the MAC CE of the spatial relationship or the TCI state of the PDSCH, specifically, the spatial relationship between the core set X and the PDSCH is configured through the MAC CE, and the MAC CE of the spatial relationship between the core set X indicates the spatial relationship of the PDSCH.
The base station configures CORESET X. The spatial relationship indicating that the PDSCH transmission scheduled or indicated by the PDCCH on core set X may be configured or activated with the same spatial relationship as core set X.
Based on the same inventive concept, embodiments of the present invention further provide a base station, a terminal, and a computer-readable storage medium, and since the principle of solving the problem of these devices is similar to the configuration method of multi-beam transmission, the implementation of these devices may refer to the implementation of the method, and repeated details are omitted.
When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.
Fig. 5 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:
the processor 500, which is used to read the program in the memory 520, executes the following processes:
scheduling data transmission on a PDSCH through a PDCCH or DCI on a first CORESET, wherein the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated;
a transceiver 510 for receiving and transmitting data under the control of the processor 500.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In the implementation, one or the combination of the following settings is also included:
transmitting a PDSCH on a symbol after a symbol in which the first CORESET and/or the PDCCH are/is located;
an interval between a symbol of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH may be less than a first time threshold, which may be a time or a number of symbols used by a UE to receive PDCCH and apply spatial QCL information, or a timeDurationForQCL;
the downlink control information may not include an indication of a TCI;
the downlink control signaling carries a TCI indication, and the terminal can ignore or not analyze the TCI indication.
In implementation, the first core set and the PDSCH are indicated by one or more MAC CEs to have the same spatial relationship, or there is an association in the spatial relationship; alternatively, the first and second electrodes may be,
by means of a first core set configured by RRC, it is indicated that the PDSCH scheduled on the first core set has the same spatial relationship or there is an association with the same spatial relationship of the core set.
In the implementation process, the first step of the method,
when one MAC CE indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated, the spatial relationship or the TCI state of the first CORESET and the PDSCH is indicated by the one MAC CE; or the like, or, alternatively,
indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the first CORESET is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
and indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
Wherein in fig. 5 the bus architecture may comprise any number of interconnected buses and bridges, in particular one or more processors, represented by the processor 500, and various circuits, represented by the memory 520, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 510 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.
The embodiment of the invention also provides a base station, which comprises:
a configuration module, configured to schedule data transmission on the PDSCH through the PDCCH or the DCI on the first CORESET, where the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated with the scheduled PDSCH.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
the antenna ports are quasi co-located;
a QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In an implementation, the configuration module is further configured to perform one or a combination of the following:
the base station sends the PDSCH on a symbol behind the symbol where the first CORESET and/or the PDCCH are located;
an interval between a symbol of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH may be less than a first time threshold, which may be a time or a number of symbols used by a UE to receive PDCCH and apply spatial QCL information, or a timeDurationForQCL;
the downlink control information may not include an indication of a TCI;
the downlink control signaling carries a TCI indication, and the terminal can ignore or not analyze the TCI indication.
In an implementation, the configuration module is further configured to indicate, by one or more MAC CEs, that the first core set and the PDSCH have the same spatial relationship, or that there is an association in the spatial relationship; alternatively, by means of the RRC configured first core set, it is indicated that the PDSCH scheduled on the first core set has the same spatial relationship or a spatial relationship exists in association with the core set.
In implementation, the configuration module is further configured to indicate, by one MAC CE, that the first core set and the PDSCH have the same spatial relationship or that the spatial relationship is associated, and the base station indicates, by one MAC CE, the spatial relationship or the TCI state of the first core set and the PDSCH at the same time; or the like, or, alternatively,
indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the first CORESET is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
and indicating that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicating that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.
Fig. 6 is a schematic structural diagram of a terminal, and as shown in the figure, the terminal includes:
the processor 600, which is used to read the program in the memory 620, executes the following processes:
determining data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
determining that the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated;
a transceiver 610 for receiving and transmitting data under the control of the processor 600.
In the implementation, having the same spatial relationship, or having the spatial relationship associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
the antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain, and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with a spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of CORESET.
In the implementation, the method further comprises one or the combination of the following steps:
a terminal receives a PDSCH transmitted on a symbol behind a symbol on which a first CORESET and/or a PDCCH is/are located;
the interval between the symbols of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH is smaller than a first time threshold, wherein the first time threshold is the time or the number of symbols used by UE for receiving PDCCH and application space QCL information, or the time DurationForQCL;
the terminal does not expect the downlink DCI to carry the TCI indication information;
the terminal ignores or does not resolve the TCI indication in the downlink DCI.
In implementation, if the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through one or more MAC CEs, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
if the base station indicates that the PDSCH scheduled on the first core set has the same spatial relationship with the core set through the first core set configured by the RRC, or the spatial relationship is associated, it is determined that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated.
In implementation, when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through one MAC CE, if the base station indicates the spatial relationship or the TCI state of the first core set and the PDSCH through one MAC CE at the same time, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated; or the like, or, alternatively,
when the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the first CORESET spatial relationship or the TCI state is indicated to be consistent with the PDSCH through a second MAC CE, the first CORESET and the PDSCH are determined to have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the spatial relationship or the TCI state of the PDSCH indicated through the third MAC CE is consistent with the first core set, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated.
Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 630 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.
The embodiment of the invention also provides a terminal, which comprises:
a first determining module, configured to determine data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
a second determining module, configured to determine that the scheduled PDSCH has the same spatial relationship or is associated with the first CORESET or the PDCCH of the first CORESET.
In an implementation, the second determining module is further configured to determine whether the parameters according to one or a combination of the following parameters have the same spatial relationship, or the spatial relationships are associated:
doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL assumption;
a TCI state;
transmitting filtering in a spatial domain, and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
In implementation, having the same spatial relationship or having an association with the spatial relationship means that the UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of the CORESET.
In the implementation, one or a combination of the following modules is also included:
a receiving module, configured to receive a PDSCH transmitted on a symbol after a symbol in which a first CORESET and/or a PDCCH are located;
the indication processing module is used for not expecting the TCI indication information carried in the scheduling signaling, or ignoring or not analyzing the TCI indication in the scheduling signaling;
and a time limit processing module, configured to set an interval between a symbol of the PDSCH and downlink control information DCI of the scheduled PDSCH to be smaller than a first time threshold, where the first time threshold is a time or a symbol number used by the UE to receive PDCCH and application space QCL information, or a timeDurationForQCL.
In implementation, the second determining module is further configured to determine that the first core set and the PDSCH have the same spatial relationship or the spatial relationship has the association if the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship has the association through one or more MAC CEs; or, if the base station indicates that the PDSCH scheduled on the first core set has the same spatial relationship with the core set through the first core set configured by the RRC, or the spatial relationship is associated, it is determined that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated.
In implementation, the second determining module is further configured to, when the base station indicates, through one MAC CE, that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated, determine, if the base station indicates, through one MAC CE, the spatial relationship or the TCI state of the first core set and the PDSCH at the same time, that the first core set and the PDSCH have the same spatial relationship, or the spatial relationship is associated; or the like, or, alternatively,
when the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the first CORESET spatial relationship or the TCI state is indicated to be consistent with the PDSCH through a second MAC CE, the first CORESET and the PDSCH are determined to have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the spatial relationship or the TCI state of the PDSCH indicated through the third MAC CE is consistent with the first core set, it is determined that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated.
For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.
A computer-readable storage medium storing a computer program for executing the above-described configuration method of multi-beam transmission.
Specifically, reference may be made to the implementation of the configuration method of the multi-beam transmission at the base station side and/or the configuration method of the multi-beam transmission at the terminal side.
In summary, in the technical solution provided in the embodiment of the present invention, by introducing that the PDSCH transmission and the PDCCH scheduling the PDSCH or the core set where the PDCCH is located have the same spatial relationship, propagation direction, and the receiving direction of the transmitting latter, the time delay caused by waiting for a time threshold (timeduration for qcl) in the existing protocol or reducing the effective time of the MAC CE is avoided. The base station can update the transmission direction more quickly and transmit data in the direction.
Furthermore, the problem that the transmission direction is not matched with the target direction due to the default spatial relationship in the existing protocol is avoided, and the problem that a large amount of scheduling is concentrated on CORESET #0 is also avoided.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (17)
1. A method for configuring multi-beam transmissions, comprising:
the base station schedules data transmission on a Physical Downlink Shared Channel (PDSCH) through a Physical Downlink Control Channel (PDCCH) or Downlink Control Information (DCI) on a first control resource set (CORESET), wherein the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated.
2. The method of claim 1, wherein having the same spatial relationship, or the spatial relationship being associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
antenna ports are quasi co-located;
quasi co-located QCL type;
QCL hypothesis;
transmitting a configuration indication (TCI) status;
transmitting filtering in a spatial domain and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
3. The method of claim 1, wherein having the same spatial relationship or having an association with a spatial relationship means that a User Equipment (UE) can receive or demodulate the scheduled PDSCH according to the spatial relationship of CORESET.
4. The method of claim 1, further comprising one or a combination of the following settings:
the base station sends the PDSCH on a symbol behind the symbol where the first CORESET and/or the PDCCH are located;
an interval between a symbol of the PDSCH and downlink control information DCI of the scheduled PDSCH may be smaller than a first time threshold, where the first time threshold may be a time or a symbol number used by the UE to receive PDCCH and apply spatial QCL information, or a QCL duration timeDurationForQCL;
the downlink control information may not include an indication of a TCI;
the downlink control signaling carries a TCI indication, and the terminal can ignore or not analyze the TCI indication.
5. The method of claim 1, wherein the base station indicates, through one or more media access control elements (MAC CEs), that the first CORESET and the PDSCH have the same spatial relationship, or that there is an association in the spatial relationship; alternatively, the first and second electrodes may be,
the base station indicates, through a first core set configured by a radio resource control RRC, that the PDSCH scheduled on the first core set has the same spatial relationship or that there is an association with the spatial relationship of the core set.
6. The method of claim 5, wherein when the base station indicates the first core set and the PDSCH to have the same spatial relationship or the spatial relationship is associated through one MAC CE, the base station simultaneously indicates the spatial relationship or the TCI state of the first core set and the PDSCH through one MAC CE; or the like, or, alternatively,
the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicates that the spatial relationship or the TCI state of the first CORESET is consistent with the PDSCH through a second MAC CE; alternatively, the first and second electrodes may be,
the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, and indicates that the spatial relationship or the TCI state of the PDSCH is consistent with the first CORESET through a third MAC CE.
7. A method for configuring multi-beam transmissions, comprising:
the terminal determines data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
the terminal determines that the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated.
8. The method of claim 7, wherein having the same spatial relationship, or the spatial relationship being associated, means that the parameters of one or a combination of the following parameters are the same:
doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters;
antenna ports are quasi co-located;
QCL type;
QCL hypothesis;
a TCI state;
transmitting filtering in a spatial domain, and receiving filtering in the spatial domain;
a spatial relationship parameter;
spatial relationship information.
9. The method of claim 7, wherein having the same spatial relationship or spatial relationship being associated means that a UE can receive or demodulate the scheduled PDSCH according to the spatial relationship of CORESET.
10. The method of claim 7, further comprising one or a combination of the following steps:
the terminal receives a PDSCH transmitted on a symbol behind a symbol where a first CORESET and/or a PDCCH are/is located;
the interval between the symbols of the PDSCH and Downlink Control Information (DCI) of the scheduled PDSCH is smaller than a first time threshold, wherein the first time threshold is the time or the number of symbols used by UE for receiving PDCCH and application space QCL information, or the time DurationForQCL;
the terminal does not expect the downlink DCI to carry the TCI indication information;
the terminal ignores or does not resolve the TCI indication in the downlink DCI.
11. The method of claim 7, wherein if the base station indicates, through one or more MAC CEs, that the first core set and the PDSCH have the same spatial relationship or that there is an association with the spatial relationship, the terminal determines that the first core set and the PDSCH have the same spatial relationship or that there is an association with the spatial relationship; alternatively, the first and second electrodes may be,
if the base station indicates that the PDSCH scheduled on the first core set has the same spatial relationship with the core set through the first core set configured by the RRC, or the spatial relationship is associated, the terminal determines that the first core set and the PDSCH have the same spatial relationship with each other, or the spatial relationship is associated with each other.
12. The method of claim 11, wherein when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through one MAC CE, if the base station indicates the spatial relationship or the TCI state of the first core set and the PDSCH through one MAC CE at the same time, the terminal determines that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated; or the like, or, alternatively,
when the base station indicates that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the first CORESET spatial relationship or the TCI state is indicated to be consistent with the PDSCH through a second MAC CE, the terminal determines that the first CORESET and the PDSCH have the same spatial relationship or the spatial relationship is associated; alternatively, the first and second electrodes may be,
when the base station indicates that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated through a plurality of MAC CEs, if the spatial relationship or the TCI state of the PDSCH indicated through the third MAC CE is consistent with the first core set, the terminal determines that the first core set and the PDSCH have the same spatial relationship or the spatial relationship is associated.
13. A base station, comprising:
a processor for reading the program in the memory, performing the following processes:
scheduling data transmission on a PDSCH through a PDCCH or DCI on a first CORESET, wherein the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated;
a transceiver for receiving and transmitting data under the control of the processor.
14. A base station, comprising:
a configuration module, configured to schedule data transmission on the PDSCH through the PDCCH or the DCI on the first CORESET, where the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated with the scheduled PDSCH.
15. A terminal, comprising:
a processor for reading the program in the memory, performing the following processes:
determining data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
determining that the scheduled PDSCH has the same spatial relationship with the first CORESET or the PDCCH of the first CORESET, or the spatial relationship is associated;
a transceiver for receiving and transmitting data under the control of the processor.
16. A terminal, comprising:
a first determining module for determining data transmission on a PDSCH scheduled by a PDCCH or DCI on a first CORESET;
a second determining module, configured to determine that the scheduled PDSCH has the same spatial relationship or is associated with the first CORESET or the PDCCH of the first CORESET.
17. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 12.
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