CN109475002B - Caching method for downlink data transmission, terminal and base station - Google Patents

Caching method for downlink data transmission, terminal and base station Download PDF

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Publication number
CN109475002B
CN109475002B CN201710807988.6A CN201710807988A CN109475002B CN 109475002 B CN109475002 B CN 109475002B CN 201710807988 A CN201710807988 A CN 201710807988A CN 109475002 B CN109475002 B CN 109475002B
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pdsch
grouping
pdcch
determining
group
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CN109475002A (en
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王磊
高雪娟
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to PCT/CN2018/089543 priority patent/WO2019047573A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

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

Abstract

The invention provides a downlink data transmission caching method, a terminal and a base station, relates to the field of communication, and solves the problem that in the prior art, a terminal receives different PDSCHs corresponding to the same HARQ process number in one TTI, and how to cache the PDSCHs cannot be determined. The method comprises the following steps: acquiring grouping information of parameters related to downlink transmission; and determining a buffer position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information. The scheme of the invention determines the cache position corresponding to the PDSCH according to the grouping information of the parameters related to the downlink transmission, can ensure that when the terminal receives two PDSCHs at the same time, the conflict does not occur when the downlink data with the same HARQ process number is cached, and simultaneously avoids introducing extra indication bits into the DCI to indicate the HARQ process number.

Description

Caching method for downlink data transmission, terminal and base station
Technical Field
The present invention relates to the field of communications, and in particular, to a method, a terminal, and a base station for caching downlink data transmission.
Background
In an LTE (Long Term Evolution) system, a terminal can only receive one PDSCH (Physical downlink Shared Channel) or transmit one PUSCH (Physical uplink Shared Channel) at most within one TTI (Transmission Time Interval). Therefore, only one PDSCH corresponding to one HARQ (hybrid automatic Repeat reQuest) process number can be received in one TTI, and the HARQ process for PDSCH transmission is clear to the terminal. When the terminal does not correctly receive the downlink data, different HARQ processes can be identified according to HARQ process IDs carried in DCI (downlink control Information), where different HARQ processes correspond to different buffer storage locations, and the terminal can determine the buffer storage locations according to HARQ process numbers, so as to perform data storage and retransmission combination in the buffers.
However, in the 5G system, the terminal may receive two PDSCHs simultaneously in the same TTI. The two PDSCHs may be from different TRPs (Transmission Receiving points) and carry different TB (transport block) information, and thus may correspond to two independent HARQ processes. When the number ranges of the HARQ process IDs of different TRPs are the same (for example, both from 0 to 7), two PDSCHs may correspond to the same HARQ process ID, and at this time, the terminal receives two PDSCHs corresponding to the same HARQ process number in one TTI, and the terminal cannot determine how to buffer the PDSCHs from the two TRPs, which may cause merging with non-corresponding data, resulting in retransmission failure.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a buffering method, a terminal and a base station for downlink data transmission, which solve the problem that in the prior art, a terminal receives different PDSCHs corresponding to the same HARQ process number in one TTI, and cannot determine how to buffer the PDSCH.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for buffering downlink data transmission, including:
acquiring grouping information of parameters related to downlink transmission;
and determining a buffer position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
Optionally, the step of obtaining the packet information of the parameter related to the downlink transmission includes:
acquiring grouping information of parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Acquiring grouping information of parameters related to the PDSCH;
the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the step of obtaining the packet information of the parameter related to the downlink control channel PDCCH for scheduling the PDSCH includes:
packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH, is acquired.
Optionally, the packet information includes packet information of QCLs related to PDCCHs for scheduling PDSCHs; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
determining a QCL corresponding to the received PDCCH;
determining a group to which the QCL corresponding to the PDCCH belongs according to the grouping information of the QCL;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs;
or
The grouping information comprises the grouping information of beams related to a PDCCH for scheduling a PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
determining beam corresponding to the received PDCCH;
determining a group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs;
or
The packet information includes packet information of BPL related to PDCCH for scheduling PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
determining a BPL corresponding to the received PDCCH;
determining a BPL (Business process language) attributive group corresponding to the PDCCH according to the grouping information of the BPL;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which the BPL corresponding to the PDCCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the step of acquiring the grouping information of the parameters related to the PDSCH includes:
grouping information of QCL, beam, or BPL related to PDSCH is acquired.
Optionally, the grouping information includes grouping information of QCLs related to the PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
acquiring QCL information corresponding to a PDSCH carried in Downlink Control Information (DCI);
determining a group to which the QCL corresponding to the PDSCH belongs according to the grouping information of the QCL;
determining a cache position corresponding to the PDSCH according to a group to which the QCL corresponding to the PDSCH belongs;
or
The grouping information comprises the grouping information of beams related to the PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
obtaining beam information corresponding to a PDSCH carried in Downlink Control Information (DCI);
determining a group to which the beam corresponding to the PDSCH belongs according to the beam grouping information;
determining a cache position corresponding to the PDSCH according to a group to which the beam corresponding to the PDSCH belongs;
or
The grouping information includes grouping information of BPL related to PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
acquiring BPL information corresponding to a PDSCH carried in Downlink Control Information (DCI);
determining a BPL (Business process language) attributive group corresponding to the PDSCH according to the grouping information of the BPL;
determining a cache position corresponding to the PDSCH according to a group to which the BPL corresponding to the PDSCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the step of obtaining the packet information of the parameter related to the downlink control channel PDCCH for scheduling the PDSCH includes:
packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH is acquired.
Optionally, the step of determining, according to the grouping information, a buffer location corresponding to the received PDSCH includes:
determining a reference signal port corresponding to a received PDCCH transmission beam;
determining a group to which a reference signal port corresponding to the PDCCH transmission beam belongs according to grouping information of the reference signal port;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which a reference signal port corresponding to the PDCCH transmission beam belongs;
the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the step of acquiring the grouping information of the parameters related to the PDSCH includes:
packet information of reference signal ports used for beam management or measurement related to PDSCH transmission beams is acquired.
Optionally, the step of determining, according to the grouping information, a buffer location corresponding to the received PDSCH includes:
determining a reference signal port corresponding to a PDSCH transmission wave beam;
determining a group to which a reference signal port corresponding to the PDSCH transmission beam belongs according to grouping information of the reference signal port;
determining a cache position corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs;
the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the step of obtaining the packet information of the parameter related to the downlink transmission includes:
and receiving grouping information of parameters related to downlink transmission, which is sent by a base station through a high-level signaling.
To solve the above technical problem, an embodiment of the present invention further provides a terminal, including:
the acquisition module is used for acquiring grouping information of parameters related to downlink transmission;
and the determining module is used for determining the corresponding cache position of the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
Optionally, the obtaining module includes:
a first obtaining submodule, configured to obtain packet information of a parameter related to a downlink control channel PDCCH for scheduling a PDSCH; or
A second obtaining sub-module, configured to obtain grouping information of parameters related to the PDSCH;
the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the first obtaining sub-module includes:
a first obtaining unit, configured to obtain packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH.
Optionally, the packet information includes packet information of QCLs related to PDCCHs for scheduling PDSCHs; the determining module comprises:
the first determining submodule is used for determining QCLs corresponding to the received PDCCH;
the first grouping determining submodule is used for determining a group to which the QCL corresponding to the PDCCH belongs according to grouping information of the QCL;
the first cache determining sub-module is used for determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs;
or
The grouping information comprises the grouping information of beams related to a PDCCH for scheduling a PDSCH; the determining module comprises:
the second determining submodule is used for determining the beam corresponding to the received PDCCH;
the second grouping determining submodule is used for determining a group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam;
the second cache determining submodule is used for determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs;
or
The packet information includes packet information of BPL related to PDCCH for scheduling PDSCH; the determining module comprises:
a third determining submodule, configured to determine a BPL corresponding to the received PDCCH;
the third grouping determining submodule is used for determining a BPL (Business process language) attributive group corresponding to the PDCCH according to the grouping information of the BPL;
a third cache determining submodule, configured to determine, according to the group to which the BPL corresponding to the PDCCH belongs, a cache position corresponding to the PDSCH scheduled by the PDCCH;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the second obtaining sub-module includes:
a second obtaining unit, configured to obtain grouping information of QCL, beam, or BPL related to the PDSCH.
Optionally, the grouping information includes grouping information of QCLs related to the PDSCH; the determining module comprises:
a third obtaining submodule, configured to obtain QCL information corresponding to the PDSCH carried in the DCI;
a fourth determining grouping submodule, configured to determine, according to grouping information of the QCLs, a group to which the QCLs corresponding to the PDSCH belong;
a fourth cache determining sub-module, configured to determine, according to the group to which the QCL corresponding to the PDSCH belongs, a cache position corresponding to the PDSCH;
or
The grouping information comprises the grouping information of beams related to the PDSCH; the determining module comprises:
a fourth obtaining submodule, configured to obtain beam information corresponding to the PDSCH carried in the DCI;
a fifth determining grouping submodule, configured to determine, according to the beam grouping information, a group to which the beam corresponding to the PDSCH belongs;
a fifth cache determining submodule, configured to determine a cache position corresponding to the PDSCH according to the group to which the beam corresponding to the PDSCH belongs;
or
The grouping information includes grouping information of BPL related to PDSCH; the determining module comprises:
a fifth obtaining submodule, configured to obtain BPL information corresponding to the PDSCH carried in the DCI;
a sixth determining grouping submodule, configured to determine, according to grouping information of BPLs, a group to which the BPLs corresponding to the PDSCH belong;
a sixth cache determining submodule, configured to determine a cache position corresponding to the PDSCH according to a group to which the BPL corresponding to the PDSCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the first obtaining sub-module includes:
a third acquiring unit, configured to acquire packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling the PDSCH.
Optionally, the determining module includes:
a fourth determining submodule, configured to determine a reference signal port corresponding to the received PDCCH transmission beam;
a seventh determining grouping submodule, configured to determine, according to grouping information of a reference signal port, a group to which the reference signal port corresponding to the PDCCH transmission beam belongs;
a seventh cache determining sub-module, configured to determine, according to the group to which the reference signal port corresponding to the PDCCH transmission beam belongs, a cache position corresponding to the PDSCH scheduled by the PDCCH;
the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the second obtaining sub-module includes:
a fourth acquiring unit, configured to acquire packet information of a reference signal port used for beam management or measurement related to the PDSCH transmission beam.
Optionally, the determining module includes:
a fifth determining submodule, configured to determine a reference signal port corresponding to a PDSCH transmission beam;
an eighth determining grouping submodule, configured to determine, according to grouping information of a reference signal port, a group to which the reference signal port corresponding to the PDSCH transmission beam belongs;
an eighth determining buffer submodule, configured to determine a buffer position corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs;
the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the obtaining module includes:
and the receiving submodule is used for receiving the grouping information of the parameters related to the downlink transmission, which is sent by the base station through the high-level signaling.
In order to solve the above technical problem, an embodiment of the present invention further provides a terminal, including a first memory, a first processor, and a computer program stored in the first memory and executable on the first processor, where the first processor is configured to read a program in the first memory, and execute the following processes:
acquiring grouping information of parameters related to downlink transmission;
and determining a buffer position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
To solve the above technical problem, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements the following steps:
acquiring grouping information of parameters related to downlink transmission;
and determining a buffer position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
In order to solve the above technical problem, an embodiment of the present invention further provides a method for buffering downlink data transmission, including:
grouping parameters related to downlink transmission;
and sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
Optionally, the step of grouping the parameters related to downlink transmission includes:
grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Grouping parameters related to the PDSCH;
the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the step of grouping parameters related to a downlink control channel PDCCH for scheduling the PDSCH includes:
grouping quasi-co-site QCLs, beam beams, or beam pair linked BPLs related to a PDCCH for scheduling PDSCH.
Optionally, the step of grouping the parameters related to the PDSCH includes:
grouping QCLs, beams, or BPLs related to PDSCH.
Optionally, the step of grouping parameters related to a downlink control channel PDCCH for scheduling the PDSCH includes:
reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH are grouped.
Optionally, the step of grouping the parameters related to the PDSCH includes:
reference signal ports used for beam management or measurement related to PDSCH transmission beams are grouped.
Optionally, the step of sending the packet information to the terminal includes:
and sending the grouping information to the terminal through higher layer signaling.
Optionally, after grouping the parameters related to the downlink transmission, the method further includes:
and transmitting the PDCCH and the PDSCH for scheduling the PDSCH on a beam corresponding to the parameter related to the downlink transmission.
To solve the above technical problem, an embodiment of the present invention further provides a base station, including:
the grouping module is used for grouping the parameters related to the downlink transmission;
the first sending module is configured to send the packet information to a terminal, so that the terminal determines, according to the packet information, a buffer location corresponding to the received PDSCH.
Optionally, the grouping module includes:
a first grouping submodule, configured to group parameters related to a downlink control channel PDCCH for scheduling the PDSCH; or
A second grouping submodule for grouping parameters related to the PDSCH;
the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the first grouping sub-module includes:
a first grouping unit, configured to group the quasi-co-site QCL, the beam, or the beam pair linked BPL associated with the PDCCH for scheduling the PDSCH.
Optionally, the second grouping sub-module includes:
and a second grouping unit for grouping the QCLs, beams, or BPLs associated with the PDSCH.
Optionally, the first grouping sub-module includes:
a third grouping unit, configured to group reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling the PDSCH.
Optionally, the second grouping sub-module includes:
a fourth grouping unit, configured to group reference signal ports used for beam management or measurement related to PDSCH transmission beams.
Optionally, the first sending module includes:
and the sending submodule is used for sending the grouping information to the terminal through high-level signaling.
Optionally, the method further includes:
and a second sending module, configured to send the PDCCH and the PDSCH for scheduling the PDSCH on the beam corresponding to the parameter related to the downlink transmission after the grouping module groups the parameter related to the downlink transmission.
To solve the above technical problem, an embodiment of the present invention further provides a base station, including a second memory, a second processor, and a computer program stored in the second memory and executable on the second processor, where the second processor is configured to read a program in the second memory, and execute the following processes:
grouping parameters related to downlink transmission;
and sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
To solve the above technical problem, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements the following steps:
grouping parameters related to downlink transmission;
and sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
The technical scheme of the invention has the following beneficial effects:
the caching method for downlink data transmission of the embodiment of the invention comprises the steps of firstly obtaining grouping information of parameters related to downlink transmission; and then determining a buffer position corresponding to the received PDSCH according to the grouping information. Therefore, the buffer position corresponding to the PDSCH is determined according to the grouping information of the parameters related to downlink transmission, so that when the terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number is buffered without conflict, and the phenomenon that an additional indication bit is introduced into the DCI to indicate the HARQ process number is avoided. The problem that in the prior art, a terminal receives different PDSCHs corresponding to the same HARQ process number in one TTI and how to cache the PDSCH cannot be determined is solved.
Drawings
Fig. 1 is a flowchart of a buffering method for downlink data transmission according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an HARQ process of PDSCH transmission according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 5 is another flowchart of a buffering method for downlink data transmission according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 7 is another schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In some embodiments of the present invention, referring to fig. 1, a buffering method for downlink data transmission is provided, including:
step 101, obtaining grouping information of parameters related to downlink transmission.
Here, by acquiring the packet information of the parameter related to downlink transmission, support is provided for subsequently determining the buffer location of the PDSCH.
The base station can group the parameters related to the downlink transmission and send the grouped information to the terminal.
Further, the base station may transmit the packet information to the terminal through higher layer signaling. In this case, the step 101 includes:
and receiving grouping information of parameters related to downlink transmission, which is sent by a base station through a high-level signaling.
And step 102, determining a buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information.
Here, the buffer position corresponding to the received PDSCH is determined according to the packet information, so that when the terminal receives two PDSCHs at the same time, no conflict occurs when the downlink data with the same HARQ process number is buffered.
The downlink data transmission caching method of the embodiment of the invention determines the corresponding caching position of the PDSCH according to the grouping information of the parameters related to downlink transmission, can ensure that when a terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number are cached without conflict, and simultaneously avoids introducing extra indication bits into the DCI to indicate the HARQ process number.
Optionally, the step 101 includes:
in step 1011, the grouping information of the parameters related to the downlink control channel PDCCH for scheduling the PDSCH is acquired.
Here, by acquiring the grouping information of the parameter related to the PDCCH for scheduling the PDSCH, the buffer location corresponding to the PDCCH-scheduled PDSCH can be determined based on the grouping information of the parameter related to the PDCCH.
Wherein, parameters related to a PDCCH for scheduling a PDSCH may be grouped by the base station, and grouping information may be transmitted to the terminal.
Or step 1012, acquiring grouping information of parameters related to the PDSCH.
Here, by acquiring the grouping information of the parameter related to the PDSCH, the buffer location corresponding to the PDSCH can be determined based on the grouping information of the parameter related to the PDSCH.
Wherein, the parameter related to the PDSCH can be grouped by the base station and the grouping information can be transmitted to the terminal.
The grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Here, the base station may group one parameter related to the PDCCH or one parameter related to the PDSCH to obtain at least one group, where each group includes at least one parameter, and the parameter values of the parameters included in different groups are different.
Because the parameter values of the parameters contained in different groups are different, the group to which the received parameter related to the PDCCH or the PDSCH belongs can be accurately determined based on the parameter values of the received parameter related to the PDCCH or the PDSCH, and then the cache position corresponding to the PDSCH can be determined.
Wherein the parameters belonging to different groups correspond to different cache locations.
It should be noted that, when the base station groups one kind of parameters related to the PDCCH or the PDSCH, all parameter values of the parameters related to the PDCCH or the PDSCH may be grouped for one terminal, so as to avoid that the corresponding group cannot be determined due to missing a certain parameter during grouping.
As an alternative implementation, the step 1011 includes:
packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH, is acquired.
Here, by acquiring packet information of QCL (Quasi Co Located), Beam, or BPL (Beam Pair Link) related to PDCCH for scheduling PDSCH, a buffer location corresponding to PDSCH called by PDCCH can be determined based on the packet information of QCL, Beam, or BPL related to PDCCH.
The base station can divide QCL, beam or BPL related to PDCCH for scheduling PDSCH into at least one group, each group comprises at least one QCL, beam or BPL parameter, and parameter values of the QCL, beam or BPL parameters contained in different groups are different.
The following describes in detail determining a buffer location corresponding to a PDSCH called by a PDCCH based on grouping information of QCL, beam, or BPL.
Optionally, the packet information includes packet information of QCLs related to PDCCHs for scheduling the PDSCH.
Here, the QCLs related to the PDCCH for scheduling the PDSCH may be divided into at least one group by the base station, each group including at least one QCL, and different groups including different QCLs.
Wherein, for a terminal, all QCLs related to PDCCH transmission configured by the base station may be grouped. For example, assuming that there are N QCLs associated with PDCCH transmission for one terminal, the N QCLs may be divided into at least one group by the base station. N is a positive integer.
The step 102 includes:
step 1021, determining the QCL corresponding to the received PDCCH.
Here, a QCL corresponding to the received PDCCH is first determined, so that a group to which the PDCCH belongs is subsequently determined based on the QCL.
When determining to receive the PDCCH, the terminal needs to attempt to receive the PDCCH on a beam determined by each QCL according to QCL information configured by the base station. The QCL may correspond to different CORESET (Control Resource Set) or different CORESET groups, or may respectively correspond to different PDCCH candidate positions candidate in the same CORESET, which is not limited in this embodiment.
Step 1022, determining the group to which the QCL corresponding to the PDCCH belongs according to the grouping information of the QCLs.
Here, since the grouping information of the QCLs includes at least one group, each group includes at least one QCL, and the QCLs included in each group are different, the group to which the QCL corresponding to the PDCCH belongs can be accurately determined based on the grouping information of the QCLs.
And 1023, determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs.
Here, the buffer position corresponding to the PDSCH scheduled by the PDCCH is determined according to the group to which the QCL corresponding to the PDCCH belongs, so that when the terminal receives two PDSCHs at the same time, no collision occurs when downlink data with the same HARQ process number is buffered.
Wherein the parameters belonging to different groups correspond to different cache locations.
For example, assume that beam is determined by QCL parameters. It is assumed that for one terminal, N QCLs related to PDCCH transmission are provided, and N is 6. The 6 QCLs may be divided into two groups by the base station, group a being { QCL1, QCL2, QCL3}, and group B being { QCL4, QCL5, QCL6 }.
Assume that the base station configures 6 CORESET for the terminal, and different CORESET correspond to different QCL, i.e. different CORESET correspond to different beam directions. The terminal needs to determine to receive the PDCCH in different CORESET according to the beam determined by the corresponding QCL.
Assume that the terminal determines that the PDCCH scheduling PDSCH1 is received on CORESET1 and its corresponding QCL is QCL 1. Meanwhile, the terminal determines that the PDCCH scheduling PDSCH2 is received on the CORESET5, and its corresponding QCL is QCL 4. Meanwhile, assuming that HARQ process IDs corresponding to PDSCH1 and PDSCH2 are both 1 and are not received correctly, the terminal needs to buffer data carried by PDSCH1 and PDSCH2 so as to combine with retransmitted data. At this time, the terminal determines how to buffer the data that has not been correctly received, according to the group to which the QCL corresponding to the PDCCH that schedules the PDSCH belongs.
And the terminal determines that the QCL1 belongs to the group A according to the QCL1 corresponding to the PDCCH for scheduling the PDSCH1, buffers the data to the HARQ buffer1, and combines the data with the subsequent data which is transmitted by adopting the same HARQ process ID and belongs to the group A by using the QCL related to the PDCCH for scheduling. Of course, if the subsequent transmissions with the same HARQ process ID and the data belonging to group a for the QCL associated with the scheduled PDCCH is still not successfully received, the data continues to be stored in HARQ buffer 1. Meanwhile, the terminal determines that the QCL4 belongs to the group B according to the QCL4 corresponding to the PDCCH for scheduling the PDSCH2, buffers the data to the HARQ buffer2, and combines the data with the subsequent data which are transmitted by adopting the same HARQ process ID and belong to the group B corresponding to the PDCCH for scheduling. Of course, if the same HARQ process ID is subsequently adopted and the data belonging to the group B of QCL corresponding to the scheduled PDCCH is still not successfully received, the data is continuously stored in the HARQ buffer 2.
The HARQ buffer is a virtual memory space divided by a certain rule (e.g., the number of HARQ processes supported, the transmission mode, the maximum memory capacity supported by the terminal hardware, etc.) in the memory space, and different HARQ buffers occupy different memory space positions. In this embodiment, the number, how to divide and how to allocate the resources of the HARQ buffers are not specifically limited.
As a simple example, PDSCH1 and PDSCH2 are from two different TRPs and have the same HARQ process ID, e.g., both 1, as shown in fig. 2. In initial transmission, PDCCH1 scheduling PDSCH1 is transmitted on beam 1 determined by QCL1, and PDCCH2 scheduling PDSCH2 is transmitted on beam 2 determined by QCL 4. Since neither is successfully received, retransmission is required. At retransmission, PDCCH1 scheduling PDSCH1 retransmission is transmitted on beam 3 determined by QCL2, while PDCCH scheduling PDSCH2 retransmission is still transmitted on beam 2 determined by QCL 4. The terminal may determine the HARQ buffer corresponding to each PDSCH according to the difference of QCL packets to which QCLs corresponding to the scheduled PDCCH belong. Of course, the retransmission of PDSCH1 and PDSCH2 may occur in different TTIs, and is not limited in this embodiment.
Further, initial transmissions of PDSCH1 and PDSCH2 with the same HARQ process number are not limited to the same TTI.
Therefore, according to grouping information of QCLs related to a PDCCH for scheduling a PDSCH, a group to which the QCLs corresponding to the PDCCH belong is determined, and then a cache position corresponding to the PDSCH scheduled by the PDCCH is determined, so that when a terminal receives two PDSCHs at the same time, conflict does not occur during caching of downlink data with the same HARQ process number, and meanwhile, the phenomenon that extra indication bits are introduced into the DCI to indicate the HARQ process number is avoided.
Optionally, the grouping information includes grouping information of beams related to a PDCCH for scheduling a PDSCH.
Here, the beams related to the PDCCH for scheduling the PDSCH may be divided into at least one group by the base station, each group including at least one beam, and the beams included in different groups are different.
For a terminal, all beams related to the transmission of the PDCCH configured by the base station may be grouped.
The step 102 includes:
step 1024, determine the beam corresponding to the received PDCCH.
Here, the beam corresponding to the received PDCCH is first determined so as to subsequently determine the belonging group based on the QCL.
And 1025, determining the group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam.
Here, since the beam grouping information includes at least one group, each group includes at least one beam, and the beams included in each group are different, the group to which the beam corresponding to the PDCCH belongs can be accurately determined based on the beam grouping information.
And step 1026, determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs.
Here, the cache position corresponding to the PDSCH scheduled by the PDCCH is determined according to the group to which the beam corresponding to the PDCCH belongs, so that when the terminal receives two PDSCHs at the same time, no conflict occurs when the downlink data having the same HARQ process number is cached.
Wherein the parameters belonging to different groups correspond to different cache locations.
At this time, according to the beam grouping information related to the PDCCH for scheduling the PDSCH, the group to which the beam corresponding to the PDCCH belongs is determined, and then the cache position corresponding to the PDSCH scheduled by the PDCCH is determined, so that when the terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number is cached without conflict, and meanwhile, the phenomenon that an extra indication bit is introduced into the DCI to indicate the HARQ process number is avoided.
Optionally, the packet information includes packet information of BPL related to a PDCCH for scheduling a PDSCH.
Here, the BPLs associated with the PDCCH for scheduling the PDSCH may be divided into at least one small group by the base station, each of the small groups including at least one BPL, and the BPLs included in different small groups are different.
Wherein, for a terminal, all BPLs related to the PDCCH configured by the base station during transmission can be grouped.
The step 102 includes:
step 1027, determining the BPL corresponding to the received PDCCH.
Here, the BPL corresponding to the received PDCCH is first determined so as to subsequently determine the belonging group based on the BPL.
Step 1028, determining a group to which the BPL corresponding to the PDCCH belongs according to the grouping information of the BPL.
Here, since the grouping information of the BPLs includes at least one group, each group includes at least one BPL, and the BPLs included in each group are different, the group to which the BPL corresponding to the PDCCH belongs can be accurately determined based on the grouping information of the BPLs.
Step 1029, determining a buffer location corresponding to the PDSCH scheduled by the PDCCH according to the group to which the BPL corresponding to the PDCCH belongs.
Here, the buffer position corresponding to the PDSCH scheduled by the PDCCH is determined according to the group to which the BPL corresponding to the PDCCH belongs, so that when the terminal receives two PDSCHs at the same time, no collision occurs when the downlink data having the same HARQ process number is buffered.
Wherein the parameters belonging to different groups correspond to different cache locations.
At this time, according to the grouping information of the BPL related to the PDCCH for scheduling the PDSCH, the group to which the BPL corresponding to the PDCCH belongs is determined, and then the cache position corresponding to the PDSCH scheduled by the PDCCH is determined, so that when the terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number is cached without conflict, and meanwhile, the phenomenon that an extra indication bit is introduced into the DCI to indicate the HARQ process number is avoided.
As an alternative implementation, the step 1012 includes:
grouping information of QCL, beam, or BPL related to PDSCH is acquired.
Here, by acquiring the packet information of QCL, beam, or BPL related to the PDSCH, the buffer location corresponding to the PDSCH can be determined based on the packet information of QCL, beam, or BPL related to the PDSCH.
The base station divides the QCL, beam or BPL related to the PDSCH into at least one group, each group comprises at least one QCL, beam or BPL parameter, and parameter values of the QCL, beam or BPL parameters contained in different groups are different.
The following describes in detail determining the buffer location corresponding to the PDSCH based on the grouping information of QCL, beam, or BPL.
Optionally, the grouping information includes grouping information of QCLs related to the PDSCH.
Here, the QCLs associated with the PDSCH may be divided into at least one group by the base station, each group including at least one QCL, and different groups including different QCLs.
Wherein, for one terminal, all QCLs related to PDSCH transmission configured by the base station may be grouped. For example, assuming that M QCLs are associated for one terminal in PDSCH transmission, the M QCLs may be divided into at least one group by the base station. M is a positive integer.
The step 102 includes:
step 10210, acquiring QCL information corresponding to the PDSCH carried in the DCI.
Here, QCL information corresponding to the PDSCH carried in the DCI is first acquired, so that a group to which the DCI belongs is subsequently determined based on the QCL.
Step 10211, determining the QCL group corresponding to the PDSCH according to the QCL grouping information.
Here, since the grouping information of the QCLs includes at least one group, each group includes at least one QCL, and the QCLs included in each group are different, the group to which the QCL corresponding to the PDSCH belongs can be accurately determined based on the grouping information of the QCLs.
Step 10212, determining a buffer location corresponding to the PDSCH according to the group to which the QCL corresponding to the PDSCH belongs.
Here, the buffer position corresponding to the PDSCH is determined according to the group to which the QCL corresponding to the PDSCH belongs, so that when the terminal receives two PDSCHs at the same time, collision does not occur when downlink data with the same HARQ process number is buffered.
Wherein the parameters belonging to different groups correspond to different cache locations.
For example, it is assumed that M QCLs related to PDSCH transmission are shared for one terminal, and M is 10. The 10 QCLs may be divided into two subgroups by the base station, with subgroup C being { QCL1 QCL2 QCL3 QCL4 QCL5} and subgroup D being { QCL6 QCL7QCL8 QCL9 QCL10 }. The QCL parameters corresponding to the PDSCH are carried in the DCI scheduling the PDSCH.
It is assumed that the terminal can receive two independent PDSCHs at the same time, and the two PDSCHs have independent HARQ processes, and the number ranges of the HARQ processes are consistent, for example, 1 to 8. When the data of the same HARQ process ID of the two PDSCHs needs to be retransmitted, the terminal determines the HARQ buffer of the PDSCH data cache according to the group to which the QCL parameters carried in the DCI of the two terminals are scheduled.
It is assumed that HARQ process IDs of PDSCH1 and PDSCH2 are both 2. When the terminal does not correctly receive PDSCH1, the terminal needs to determine that QCL4 belongs to group C according to QCL4 corresponding to PDSCH1, and further determines to store data to corresponding HARQ buffer X1, so as to combine with subsequent retransmission data of PDSCH1 on HARQ process 2. When the terminal does not correctly receive the PDSCH2, the terminal needs to determine that the QCL8 belongs to the group D according to the QCL8 corresponding to the PDSCH2, and further determines to store the data to the corresponding HARQ buffer Y1, so as to combine the data with the subsequent retransmission data of the PDSCH2 on the HARQ process 2. The HARQ buffer X1 and the HARQ buffer Y1 are non-overlapping storage areas, and even if the terminal receives two PDSCHs with the same HARQ process number at the same time, the two PDSCHs cannot be stored in the same position because the two PDSCHs carry different original information, and belong to two different HARQ processes from different TRPs although the HARQ process numbers are the same.
Of course, the QCL corresponding to the initial PDSCH and the retransmitted PDSCH may be different. As mentioned above, no further description is provided herein.
Therefore, according to the grouping information of the QCLs related to the PDSCH, the group to which the QCLs corresponding to the PDSCH belong is determined, and then the cache position corresponding to the PDSCH is determined, so that when the terminal receives two PDSCHs at the same time, conflict can not occur during caching of downlink data with the same HARQ process number, and meanwhile, the fact that extra indication bits are introduced into the DCI to indicate the HARQ process number is avoided.
Optionally, the grouping information includes beam grouping information related to the PDSCH.
Here, the beams related to the PDSCH may be divided into at least one group by the base station, each group including at least one beam, and the beams included in different groups are different.
Wherein, for one terminal, all beams related to the PDSCH transmission configured by the base station can be grouped.
The step 102 includes:
step 10213, obtain beam information corresponding to PDSCH carried in downlink control information DCI.
Here, first, beam information corresponding to the PDSCH carried in the DCI is acquired, so as to subsequently determine the belonging group based on the QCL.
Step 10214, determining a group to which the beam corresponding to the PDSCH belongs according to the beam grouping information.
Here, since the beam grouping information includes at least one group, each group includes at least one beam, and the beams included in each group are different, the group to which the beam corresponding to the PDSCH belongs can be accurately determined based on the beam grouping information.
Step 10215, determining a buffer location corresponding to the PDSCH according to the group to which the beam corresponding to the PDSCH belongs.
Here, the buffer position corresponding to the PDSCH is determined according to the group to which the beam corresponding to the PDSCH belongs, so that when the terminal receives two PDSCHs at the same time, collision does not occur when downlink data with the same HARQ process number is buffered.
Wherein the parameters belonging to different groups correspond to different cache locations.
At this time, according to the beam grouping information related to the PDSCH, the group to which the beam corresponding to the PDSCH belongs is determined, and then the cache position corresponding to the PDSCH is determined, so that when the terminal receives two PDSCHs at the same time, conflict does not occur when downlink data with the same HARQ process number is cached, and meanwhile, the phenomenon that an extra indication bit is introduced into the DCI to indicate the HARQ process number is avoided.
Optionally, the grouping information includes grouping information of BPLs related to the PDSCH.
Here, the BPLs associated with the PDSCH may be divided into at least one small group by the base station, each small group including at least one BPL, and the BPLs included in different small groups are different.
Wherein, for one terminal, all BPLs related to PDSCH transmission configured by the base station can be grouped.
The step 102 includes:
step 10216, obtaining the BPL information corresponding to the PDSCH carried in the DCI.
Here, the BPL information corresponding to the PDSCH carried in the DCI is first acquired, so that the belonging group is subsequently determined based on the BPL.
Step 10217, according to the grouping information of the BPL, determining the group to which the BPL corresponding to the PDSCH belongs.
Here, since the grouping information of the BPLs includes at least one group, each group includes at least one BPL, and the BPLs included in each group are different, the group to which the BPL corresponding to the PDCCH belongs can be accurately determined based on the grouping information of the BPLs.
Step 10218, determining a buffer location corresponding to the PDSCH according to the group to which the BPL corresponding to the PDSCH belongs.
Here, the buffer position corresponding to the PDSCH is determined according to the group to which the BPL corresponding to the PDSCH belongs, so that when the terminal receives two PDSCHs at the same time, a conflict does not occur when the downlink data having the same HARQ process number is buffered.
Wherein the parameters belonging to different groups correspond to different cache locations.
At this time, according to the grouping information of the BPL related to the PDSCH, the group to which the BPL corresponding to the PDSCH belongs is determined, and then the cache position corresponding to the PDSCH is determined, so that when the terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number is cached without conflict, and meanwhile, the situation that an extra indication bit is introduced into the DCI to indicate the HARQ process number is avoided.
As another optional implementation manner, the step 1011 includes:
packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH is acquired.
Here, by acquiring packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling a PDSCH, a buffer location corresponding to a PDSCH called by a PDCCH may be determined based on the packet information of the reference signal port related to the PDCCH transmission beam.
The reference signal ports used for beam management or measurement related to the PDCCH transmission beam can be divided into at least one group by the base station, each group comprises at least one reference signal port, and the reference signal ports contained in different groups are different.
The reference Signal port used for beam management or measurement may be, for example, a CSI-RS (Channel state information reference Signal) port, but is not limited thereto.
Wherein, for a terminal, all reference signal ports related to the PDCCH transmission beam configured by the base station can be grouped. For example, assuming that W CSI-RS ports related to PDCCH transmission beams for one terminal are provided, the W CSI-RS ports may be divided into at least one group by the base station. W is a positive integer.
Optionally, the step 102 includes:
step 10219, determine a reference signal port corresponding to the received PDCCH transmission beam.
Here, a reference signal port corresponding to the received PDCCH transmission beam is first determined, so that a group to which the PDCCH belongs is subsequently determined based on the reference signal port.
Step 10220, determining a group to which a reference signal port corresponding to the PDCCH transmission beam belongs according to the grouping information of the reference signal port.
Here, since the grouping information of the reference signal port includes at least one group, each group includes at least one reference signal port, and the reference signal ports included in each group are different, the group to which the reference signal port corresponding to the PDCCH belongs can be accurately determined according to the grouping information of the reference signal port.
Step 10221, determining a buffer location corresponding to the PDSCH scheduled by the PDCCH according to the group to which the reference signal port corresponding to the PDCCH transmission beam belongs.
Here, the cache position corresponding to the PDSCH scheduled by the PDCCH is determined according to the group to which the reference signal port corresponding to the PDCCH transmission beam belongs, so that when the terminal receives two PDSCHs at the same time, no conflict occurs when the downlink data with the same HARQ process number is cached.
The reference signal ports belonging to different groups correspond to different cache positions.
For example, suppose that for one terminal, the base station configures W CSI-RS ports for beam management or measurement, W ═ 6. The 6 CSI-RS ports can be divided into two subgroups by the base station, wherein the subgroup E is { P1, P2 and P3} and the subgroup F is { P4, P5 and P6 }. And transmits the packet information to the terminal through higher layer signaling. After the terminal determines that the PDCCH is received, the CSI-RS port corresponding to the wave beam is determined according to the wave beam where the PDCCH is located, and therefore the HARQbuffer corresponding to the PDSCH scheduled by the PDCCH is determined.
It is assumed that the terminal can receive two independent PDSCHs at the same time, and the two PDSCHs have independent HARQ processes, and the number ranges of the HARQ processes are consistent, for example, 1 to 8. When the data of the same HARQ process ID of the two PDSCHs need to be retransmitted, the terminal determines the HARQ buffer of the PDSCH data cache according to the group to which the CSI-RS port corresponding to the PDCCH transmission wave beams of the two terminals are scheduled.
It is assumed that HARQ process IDs of PDSCH1 and PDSCH2 are both 1. When the terminal does not correctly receive the PDSCH1, the terminal needs to determine that the P1 belongs to the group E according to the CSI-RS port P1 corresponding to the PDCCH transmission beam scheduling the PDSCH1, and further determines to store the data in the corresponding HARQ buffer X2, so as to combine the data with the subsequent retransmission data of the PDSCH1 on the HARQ process 1. When the terminal does not correctly receive the PDSCH2, the terminal needs to determine that the P6 belongs to the group F according to the CSI-RS port P6 corresponding to the PDCCH transmission beam scheduling the PDSCH2, and further determines to store the data in the corresponding HARQ buffer2, so as to combine the data with the subsequent retransmission data of the PDSCH2 on the HARQ process 1. HARQ buffer X2 and HARQ buffer Y2 are independent memory areas.
Of course, the CSI-RS port corresponding to the PDCCH transmission beam scheduling the initial PDSCH and the CSI-RS port corresponding to the PDCCH transmission beam scheduling the retransmission PDSCH may be different. As mentioned above, no further description is provided herein.
Therefore, according to the packet information of the reference signal port used by the PDCCH for transmitting the beam management or measurement, the group to which the reference signal port corresponding to the PDCCH belongs is determined, and then the cache position corresponding to the PDSCH called by the PDCCH is determined, so that when a terminal receives two PDSCHs at the same time, the downlink data cache with the same HARQ process number does not conflict, and the situation that an extra indication bit is introduced into the DCI to indicate the HARQ process number is avoided.
As another optional implementation manner, the step 1012 includes:
packet information of reference signal ports used for beam management or measurement related to PDSCH transmission beams is acquired.
Here, by acquiring packet information of reference signal ports used for beam management or measurement related to PDSCH transmission beams, a buffer location corresponding to PDSCH can be determined based on the packet information of the reference signal ports related to PDSCH transmission beams.
The reference signal ports used for beam management or measurement related to the PDSCH transmission beam can be divided into at least one group by the base station, each group includes at least one reference signal port, and the reference signal ports included in different groups are different.
The reference signal port used for beam management or measurement may be, for example, a CSI-RS port, but is not limited thereto.
Wherein, for one terminal, all reference signal ports related to the PDSCH transmission beam configured by the base station can be grouped. For example, assuming that there are M CSI-RS ports related to PDSCH transmission beams for one terminal, the M CSI-RS ports may be divided into at least one group by the base station. M is a positive integer.
Optionally, the step 102 includes:
step 10222, determine a reference signal port corresponding to the PDSCH transmission beam.
Here, a reference signal port corresponding to the PDSCH transmission beam is first determined so as to subsequently determine a belonging group based on the reference signal port.
Step 10223, determining a group to which a reference signal port corresponding to the PDSCH transmission beam belongs according to the grouping information of the reference signal port.
Here, since the grouping information of the reference signal ports includes at least one group, each group includes at least one reference signal port, and the reference signal ports included in each group are different, the group to which the reference signal port corresponding to the PDSCH belongs can be accurately determined according to the grouping information of the reference signal ports.
Step 10224, determining a buffer location corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs.
Here, the buffer position corresponding to the PDSCH is determined according to the group to which the reference signal port corresponding to the PDSCH transmission beam belongs, so that when the terminal receives two PDSCHs at the same time, no collision occurs when the downlink data with the same HARQ process number is buffered.
The reference signal ports belonging to different groups correspond to different cache positions.
For example, assume that for one terminal, the base station configures M CSI-RS ports for beam management or measurement, where M is 6. The 6 CSI-RS ports can be divided into two subgroups through the base station, wherein the subgroup G is { P1, P2 and P3}, and the subgroup H is { P4, P5 and P6 }. And transmits the packet information to the terminal through higher layer signaling. After receiving the PDSCH, the terminal determines a CSI-RS port corresponding to the wave beam according to the wave beam where the PDSCH is located, so that the HARQ buffer corresponding to the PDSCH is determined.
It is assumed that the terminal can receive two independent PDSCHs at the same time, and the two PDSCHs have independent HARQ processes, and the number ranges of the HARQ processes are consistent, for example, 1 to 8. When the data of the same HARQ process ID of the two PDSCHs needs to be retransmitted, the terminal determines the HARQ buffer of the PDSCH data cache according to the group to which the CSI-RS port corresponding to the beam where the two PDSCHs are scheduled to transmit belongs.
It is assumed that HARQ process IDs of PDSCH1 and PDSCH2 are both 2. When the terminal does not correctly receive the PDSCH1, the terminal needs to determine that the P2 belongs to the group G according to the CSI-RS port P2 corresponding to the beam where the PDSCH1 is transmitted, and further determines to store the data to the corresponding HARQ buffer X3, so as to combine the data with the subsequent retransmission data of the PDSCH1 on the HARQ process 2. When the terminal does not correctly receive the PDSCH2, the terminal needs to determine that the P5 belongs to the group H according to the CSI-RS port P5 corresponding to the beam where the PDSCH2 is transmitted, and further determines to store the data to the corresponding HARQ buffer Y3, so as to combine the data with the subsequent retransmission data of the PDSCH2 on the HARQ process 2. The HARQ buffer X3 and the HARQ buffer Y3 are independent memory areas.
Certainly, the initial PDSCH transmission beam and the retransmission PDSCH beam may be different, and the corresponding CSI-RS ports may also be different. As mentioned above, no further description is provided herein.
Therefore, according to the packet information of the reference signal port used by the beam management or measurement related to the PDCCH transmission beam, the group to which the reference signal port corresponding to the PDCCH belongs is determined, and then the cache position corresponding to the PDSCH is determined, so that when the terminal receives two PDSCHs at the same time, the downlink data cache with the same HARQ process number does not conflict, and meanwhile, the situation that an extra indication bit is introduced into the DCI to indicate the HARQ process number is avoided.
The downlink data transmission caching method of the embodiment of the invention determines the corresponding caching position of the PDSCH according to the grouping information of the parameters related to downlink transmission, can ensure that when a terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number are cached without conflict, and simultaneously avoids introducing extra indication bits into the DCI to indicate the HARQ process number.
In some embodiments of the present invention, as shown with reference to fig. 3, there is also provided a terminal, including:
an obtaining module 301, configured to obtain packet information of parameters related to downlink transmission;
a determining module 302, configured to determine, according to the grouping information, a buffer location corresponding to the received PDSCH.
The terminal of the embodiment of the invention determines the cache position corresponding to the PDSCH according to the grouping information of the parameters related to the downlink transmission, can ensure that when the terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number is cached without conflict, and simultaneously avoids introducing extra indication bits into the DCI to indicate the HARQ process number.
Optionally, the obtaining module 301 includes:
a first obtaining submodule, configured to obtain packet information of a parameter related to a downlink control channel PDCCH for scheduling a PDSCH; or
A second obtaining sub-module, configured to obtain grouping information of parameters related to the PDSCH;
the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the first obtaining sub-module includes:
a first obtaining unit, configured to obtain packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH.
Optionally, the packet information includes packet information of QCLs related to PDCCHs for scheduling PDSCHs; the determining module 302 comprises:
the first determining submodule is used for determining QCLs corresponding to the received PDCCH;
the first grouping determining submodule is used for determining a group to which the QCL corresponding to the PDCCH belongs according to grouping information of the QCL;
the first cache determining sub-module is used for determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs;
or
The grouping information comprises the grouping information of beams related to a PDCCH for scheduling a PDSCH; the determining module 302 comprises:
the second determining submodule is used for determining the beam corresponding to the received PDCCH;
the second grouping determining submodule is used for determining a group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam;
the second cache determining submodule is used for determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs;
or
The packet information includes packet information of BPL related to PDCCH for scheduling PDSCH; the determining module 302 comprises:
a third determining submodule, configured to determine a BPL corresponding to the received PDCCH;
the third grouping determining submodule is used for determining a BPL (Business process language) attributive group corresponding to the PDCCH according to the grouping information of the BPL;
a third cache determining submodule, configured to determine, according to the group to which the BPL corresponding to the PDCCH belongs, a cache position corresponding to the PDSCH scheduled by the PDCCH;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the second obtaining sub-module includes:
a second obtaining unit, configured to obtain grouping information of QCL, beam, or BPL related to the PDSCH.
Optionally, the grouping information includes grouping information of QCLs related to the PDSCH; the determining module 302 comprises:
a third obtaining submodule, configured to obtain QCL information corresponding to the PDSCH carried in the DCI;
a fourth determining grouping submodule, configured to determine, according to grouping information of the QCLs, a group to which the QCLs corresponding to the PDSCH belong;
a fourth cache determining sub-module, configured to determine, according to the group to which the QCL corresponding to the PDSCH belongs, a cache position corresponding to the PDSCH;
or
The grouping information comprises the grouping information of beams related to the PDSCH; the determining module 302 comprises:
a fourth obtaining submodule, configured to obtain beam information corresponding to the PDSCH carried in the DCI;
a fifth determining grouping submodule, configured to determine, according to the beam grouping information, a group to which the beam corresponding to the PDSCH belongs;
a fifth cache determining submodule, configured to determine a cache position corresponding to the PDSCH according to the group to which the beam corresponding to the PDSCH belongs;
or
The grouping information includes grouping information of BPL related to PDSCH; the determining module 302 comprises:
a fifth obtaining submodule, configured to obtain BPL information corresponding to the PDSCH carried in the DCI;
a sixth determining grouping submodule, configured to determine, according to grouping information of BPLs, a group to which the BPLs corresponding to the PDSCH belong;
a sixth cache determining submodule, configured to determine a cache position corresponding to the PDSCH according to a group to which the BPL corresponding to the PDSCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the first obtaining sub-module includes:
a third acquiring unit, configured to acquire packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling the PDSCH.
Optionally, the determining module 302 includes:
a fourth determining submodule, configured to determine a reference signal port corresponding to the received PDCCH transmission beam;
a seventh determining grouping submodule, configured to determine, according to grouping information of a reference signal port, a group to which the reference signal port corresponding to the PDCCH transmission beam belongs;
a seventh cache determining sub-module, configured to determine, according to the group to which the reference signal port corresponding to the PDCCH transmission beam belongs, a cache position corresponding to the PDSCH scheduled by the PDCCH;
the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the second obtaining sub-module includes:
a fourth acquiring unit, configured to acquire packet information of a reference signal port used for beam management or measurement related to the PDSCH transmission beam.
Optionally, the determining module 302 includes:
a fifth determining submodule, configured to determine a reference signal port corresponding to a PDSCH transmission beam;
an eighth determining grouping submodule, configured to determine, according to grouping information of a reference signal port, a group to which the reference signal port corresponding to the PDSCH transmission beam belongs;
an eighth determining buffer submodule, configured to determine a buffer position corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs;
the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the obtaining module 301 includes:
and the receiving submodule is used for receiving the grouping information of the parameters related to the downlink transmission, which is sent by the base station through the high-level signaling.
The terminal of the embodiment of the invention determines the cache position corresponding to the PDSCH according to the grouping information of the parameters related to the downlink transmission, can ensure that when the terminal receives two PDSCHs at the same time, the downlink data with the same HARQ process number is cached without conflict, and simultaneously avoids introducing extra indication bits into the DCI to indicate the HARQ process number.
It should be noted that, all implementation manners in the above-described embodiments of the buffering method for downlink data transmission are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
In some embodiments of the present invention, referring to fig. 4, there is further provided a terminal, including a first memory 420, a first processor 400, a user interface 430, a bus interface, and a computer program stored on the first memory 420 and executable on the first processor 400, wherein the first processor 400 is configured to read the program in the first memory 420 and execute the following processes:
acquiring grouping information of parameters related to downlink transmission;
and determining a buffer position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
Where in fig. 4 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by the first processor 400 and various circuits of the memory represented by the first memory 420 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 first processor 400 is responsible for managing the bus architecture and general processing, and the first memory 420 may store data used by the first processor 400 when performing operations. For different user devices, the user interface 430 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.
Optionally, the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: acquiring grouping information of parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or acquiring grouping information of parameters related to the PDSCH; the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH, is acquired.
Optionally, the packet information includes packet information of QCLs related to PDCCHs for scheduling PDSCHs; the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: determining a QCL corresponding to the received PDCCH; determining a group to which the QCL corresponding to the PDCCH belongs according to the grouping information of the QCL; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs;
or
The grouping information comprises the grouping information of beams related to a PDCCH for scheduling a PDSCH; the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: determining beam corresponding to the received PDCCH; determining a group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs;
or
The packet information includes packet information of BPL related to PDCCH for scheduling PDSCH; the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: determining a BPL corresponding to the received PDCCH; determining a BPL (Business process language) attributive group corresponding to the PDCCH according to the grouping information of the BPL; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which the BPL corresponding to the PDCCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: grouping information of QCL, beam, or BPL related to PDSCH is acquired.
Optionally, the grouping information includes grouping information of QCLs related to the PDSCH; the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: acquiring QCL information corresponding to a PDSCH carried in Downlink Control Information (DCI); determining a group to which the QCL corresponding to the PDSCH belongs according to the grouping information of the QCL; determining a cache position corresponding to the PDSCH according to a group to which the QCL corresponding to the PDSCH belongs;
or
The grouping information comprises the grouping information of beams related to the PDSCH; the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: obtaining beam information corresponding to a PDSCH carried in Downlink Control Information (DCI); determining a group to which the beam corresponding to the PDSCH belongs according to the beam grouping information; determining a cache position corresponding to the PDSCH according to a group to which the beam corresponding to the PDSCH belongs;
or
The grouping information includes grouping information of BPL related to PDSCH; the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: acquiring BPL information corresponding to a PDSCH carried in Downlink Control Information (DCI); determining a BPL (Business process language) attributive group corresponding to the PDSCH according to the grouping information of the BPL; determining a cache position corresponding to the PDSCH according to a group to which the BPL corresponding to the PDSCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH is acquired.
Optionally, the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: determining a reference signal port corresponding to a received PDCCH transmission beam; determining a group to which a reference signal port corresponding to the PDCCH transmission beam belongs according to grouping information of the reference signal port; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which a reference signal port corresponding to the PDCCH transmission beam belongs; the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: packet information of reference signal ports used for beam management or measurement related to PDSCH transmission beams is acquired.
Optionally, the first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: determining a reference signal port corresponding to a PDSCH transmission wave beam; determining a group to which a reference signal port corresponding to the PDSCH transmission beam belongs according to grouping information of the reference signal port; determining a cache position corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs; the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the terminal further comprises a first transceiver 410. The first processor 400 is further configured to read the program in the first memory 420, and perform the following processes: the grouping information of the parameters related to the downlink transmission, which is transmitted by the base station through the higher layer signaling, is received through the first transceiver 410.
The first transceiver 410 may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
acquiring grouping information of parameters related to downlink transmission;
and determining a buffer position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: acquiring grouping information of parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or acquiring grouping information of parameters related to the PDSCH; the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH, is acquired.
Optionally, the packet information includes packet information of QCLs related to PDCCHs for scheduling PDSCHs; the program, when executed by the processor, is further configured to perform the steps of: determining a QCL corresponding to the received PDCCH; determining a group to which the QCL corresponding to the PDCCH belongs according to the grouping information of the QCL; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs;
or
The grouping information comprises the grouping information of beams related to a PDCCH for scheduling a PDSCH; the program, when executed by the processor, is further configured to perform the steps of: determining beam corresponding to the received PDCCH; determining a group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs;
or
The packet information includes packet information of BPL related to PDCCH for scheduling PDSCH; the program, when executed by the processor, is further configured to perform the steps of: determining a BPL corresponding to the received PDCCH; determining a BPL (Business process language) attributive group corresponding to the PDCCH according to the grouping information of the BPL; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which the BPL corresponding to the PDCCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: grouping information of QCL, beam, or BPL related to PDSCH is acquired.
Optionally, the grouping information includes grouping information of QCLs related to the PDSCH; the program, when executed by the processor, is further configured to perform the steps of: acquiring QCL information corresponding to a PDSCH carried in Downlink Control Information (DCI); determining a group to which the QCL corresponding to the PDSCH belongs according to the grouping information of the QCL; determining a cache position corresponding to the PDSCH according to a group to which the QCL corresponding to the PDSCH belongs;
or
The grouping information comprises the grouping information of beams related to the PDSCH; the program, when executed by the processor, is further configured to perform the steps of: obtaining beam information corresponding to a PDSCH carried in Downlink Control Information (DCI); determining a group to which the beam corresponding to the PDSCH belongs according to the beam grouping information; determining a cache position corresponding to the PDSCH according to a group to which the beam corresponding to the PDSCH belongs;
or
The grouping information includes grouping information of BPL related to PDSCH; the program, when executed by the processor, is further configured to perform the steps of: acquiring BPL information corresponding to a PDSCH carried in Downlink Control Information (DCI); determining a BPL (Business process language) attributive group corresponding to the PDSCH according to the grouping information of the BPL; determining a cache position corresponding to the PDSCH according to a group to which the BPL corresponding to the PDSCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH is acquired.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: determining a reference signal port corresponding to a received PDCCH transmission beam; determining a group to which a reference signal port corresponding to the PDCCH transmission beam belongs according to grouping information of the reference signal port; determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which a reference signal port corresponding to the PDCCH transmission beam belongs; the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: packet information of reference signal ports used for beam management or measurement related to PDSCH transmission beams is acquired.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: determining a reference signal port corresponding to a PDSCH transmission wave beam; determining a group to which a reference signal port corresponding to the PDSCH transmission beam belongs according to grouping information of the reference signal port; determining a cache position corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs; the reference signal ports belonging to different groups correspond to different cache positions.
Optionally, the program is further configured to, when executed by the processor, implement the steps of: and receiving grouping information of parameters related to downlink transmission, which is sent by a base station through a high-level signaling.
In some embodiments of the present invention, referring to fig. 5, there is further provided a buffering method for downlink data transmission, including:
step 501, grouping parameters related to downlink transmission.
Here, by grouping the downlink transmission related parameters, support is provided for the terminal to determine the buffer location of the PDSCH based on the grouping information.
Step 502, sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to the received physical downlink shared channel PDSCH according to the grouping information.
Here, by sending the packet information to the terminal, the terminal can determine the buffer position corresponding to the received PDSCH according to the packet information, thereby ensuring that when the terminal receives two PDSCHs at the same time, no conflict occurs when the downlink data with the same HARQ process number is buffered.
According to the method for caching downlink data transmission provided by the embodiment of the invention, the parameters related to downlink transmission are grouped, and the grouping information is sent to the terminal, so that the terminal can determine the caching position corresponding to the PDSCH according to the grouping information of the parameters related to downlink transmission, the conflict can be avoided when the terminal receives two PDSCHs simultaneously and the downlink data with the same HARQ process number is cached, and the phenomenon that an additional indication bit is introduced into DCI to indicate the HARQ process number is avoided.
Optionally, the step 501 includes:
in step 5011, parameters related to a downlink control channel PDCCH for scheduling a PDSCH are grouped.
Here, by grouping parameters related to a downlink control channel PDCCH for scheduling a PDSCH and transmitting grouping information to the terminal, the terminal can determine a buffer location corresponding to the PDCCH-scheduled PDSCH based on the grouping information of the parameters related to the PDCCH.
Or step 5012, grouping parameters related to PDSCH.
Here, by grouping the parameters related to the PDSCH and transmitting the grouping information to the terminal, the terminal can determine the buffer location corresponding to the PDSCH based on the grouping information of the parameters related to the PDSCH.
The grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Here, the base station groups one parameter related to the PDCCH or one parameter related to the PDSCH to obtain at least one group, each group including at least one parameter, and the parameter values of the parameters included in different groups are different.
Due to the fact that parameter values of parameters contained in different groups are different, the terminal can accurately determine the group to which the received PDCCH or PDSCH related parameters belong based on the parameter values of the received PDCCH or PDSCH related parameters, and further determine the cache position corresponding to the PDSCH.
Wherein the parameters belonging to different groups correspond to different cache locations.
It should be noted that, when the base station groups one kind of parameters related to the PDCCH or the PDSCH, all parameter values of the parameters related to the PDCCH or the PDSCH may be grouped for one terminal, so as to avoid that a corresponding group cannot be determined due to omission of a certain parameter during grouping.
Optionally, the step 5011 includes:
grouping quasi-co-site QCLs, beam beams, or beam pair linked BPLs related to a PDCCH for scheduling PDSCH.
Here, by grouping QCLs, beams, or BPLs related to PDCCHs for scheduling PDSCHs, the terminal can determine a buffer location corresponding to a PDSCH called by a PDCCH based on grouping information of the QCLs, beams, or BPLs related to PDCCHs.
The QCL, beam or BPL related to the PDCCH for scheduling the PDSCH may be divided into at least one group, each group includes at least one QCL, beam or BPL parameter, and different groups include different QCL, beam or BPL parameters with different parameter values.
After grouping the QCLs, beams, or BPLs related to the PDCCH for scheduling the PDSCH, the base station may also transmit the PDCCH and the PDSCH for scheduling the PDSCH on a beam corresponding to the QCLs, beams, or BPLs related to the PDCCH. QCL or beam or BPL corresponding to beams transmitting the PDCCH and PDSCH, respectively, may be different.
Optionally, the step 5012 includes:
grouping QCLs, beams, or BPLs related to PDSCH.
Here, by grouping QCLs, beams, or BPLs related to the PDSCH, the terminal may determine a buffer location corresponding to the PDSCH based on the grouping information of the QCLs, beams, or BPLs related to the PDSCH.
The QCL, beam or BPL related to the PDSCH may be divided into at least one group, each group includes at least one QCL, beam or BPL parameter, and different groups include different QCL, beam or BPL parameters with different parameter values.
After grouping the QCLs, beams, or BPLs related to the PDSCH, the base station may transmit the PDCCH and PDSCH scheduling the PDSCH on the beam corresponding to the QCL, beams, or BPL related to the PDSCH. QCL or beam or BPL corresponding to beams transmitting the PDCCH and PDSCH, respectively, may be different.
Optionally, the step 5011 includes:
reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH are grouped.
Here, by grouping reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling a PDSCH, the terminal may determine a buffer location corresponding to a PDSCH called by a PDCCH based on grouping information of reference signal ports related to the PDCCH transmission beam.
Reference signal ports used for beam management or measurement related to a PDCCH transmission beam can be divided into at least one group, each group includes at least one reference signal port, and the reference signal ports included in different groups are different.
The reference signal port used for beam management or measurement may be, for example, a CSI-RS port, but is not limited thereto.
Wherein, for a terminal, all reference signal ports related to the PDCCH transmission beam configured by the base station can be grouped.
After grouping the reference signal ports used for beam management or measurement related to the PDCCH transmission beam for scheduling the PDSCH, the base station may also transmit the PDCCH scheduling the PDSCH and the PDSCH on the beam corresponding to the reference signal port related to the PDCCH transmission beam. Reference signal ports corresponding to beams transmitting the PDCCH and the PDSCH, respectively, may be different.
Optionally, the step 5012 includes:
reference signal ports used for beam management or measurement related to PDSCH transmission beams are grouped.
Here, by grouping reference signal ports used for beam management or measurement related to PDSCH transmission beams, the terminal may determine a buffer location corresponding to the PDSCH based on the grouping information of the reference signal ports related to PDSCH transmission beams.
Reference signal ports used for beam management or measurement related to a PDSCH transmission beam can be divided into at least one small group, each small group includes at least one reference signal port, and the reference signal ports included in different small groups are different.
The reference signal port used for beam management or measurement may be, for example, a CSI-RS port, but is not limited thereto.
Wherein, for one terminal, all reference signal ports related to the PDSCH transmission beam configured by the base station can be grouped.
After grouping the reference signal ports used for beam management or measurement related to the PDSCH transmission beam, the base station may also transmit the PDCCH and PDSCH scheduling the PDSCH on the beam corresponding to the reference signal port related to the PDSCH transmission beam. Reference signal ports corresponding to beams transmitting the PDCCH and the PDSCH, respectively, may be different.
Optionally, the step 502 includes:
and sending the grouping information to the terminal through higher layer signaling.
Here, the base station may transmit packet information to the terminal through higher layer signaling.
Optionally, after the step 501, the method further includes:
and transmitting the PDCCH and the PDSCH for scheduling the PDSCH on a beam corresponding to the parameter related to the downlink transmission.
Here, the base station may transmit the PDCCH for scheduling the PDSCH and the PDSCH on the beam corresponding to the downlink transmission-related parameter.
According to the method for caching downlink data transmission provided by the embodiment of the invention, the parameters related to downlink transmission are grouped, and the grouping information is sent to the terminal, so that the terminal can determine the caching position corresponding to the PDSCH according to the grouping information of the parameters related to downlink transmission, the conflict can be avoided when the terminal receives two PDSCHs simultaneously and the downlink data with the same HARQ process number is cached, and the phenomenon that an additional indication bit is introduced into DCI to indicate the HARQ process number is avoided.
In some embodiments of the present invention, referring to fig. 6, there is also provided a base station, including:
a grouping module 601, configured to group downlink transmission related parameters;
a first sending module 602, configured to send the packet information to a terminal, so that the terminal determines, according to the packet information, a buffer location corresponding to a received PDSCH.
The base station of the embodiment of the invention can ensure that the terminal can determine the cache position corresponding to the PDSCH according to the grouping information of the downlink transmission related parameters by grouping the downlink transmission related parameters and sending the grouping information to the terminal, thereby ensuring that when the terminal receives two PDSCHs at the same time, the conflict can not occur when the downlink data with the same HARQ process number is cached, and simultaneously avoiding introducing extra indication bits into the DCI to indicate the HARQ process number.
Optionally, the grouping module 601 includes:
a first grouping submodule, configured to group parameters related to a downlink control channel PDCCH for scheduling the PDSCH; or
A second grouping submodule for grouping parameters related to the PDSCH;
the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the first grouping sub-module includes:
a first grouping unit, configured to group the quasi-co-site QCL, the beam, or the beam pair linked BPL associated with the PDCCH for scheduling the PDSCH.
Optionally, the second grouping sub-module includes:
and a second grouping unit for grouping the QCLs, beams, or BPLs associated with the PDSCH.
Optionally, the first grouping sub-module includes:
a third grouping unit, configured to group reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling the PDSCH.
Optionally, the second grouping sub-module includes:
a fourth grouping unit, configured to group reference signal ports used for beam management or measurement related to PDSCH transmission beams.
Optionally, the first sending module 602 includes:
and the sending submodule is used for sending the grouping information to the terminal through high-level signaling.
Optionally, the method further includes:
and a second sending module, configured to send the PDCCH and the PDSCH for scheduling the PDSCH on the beam corresponding to the parameter related to the downlink transmission after the grouping module groups the parameter related to the downlink transmission.
The base station of the embodiment of the invention can ensure that the terminal can determine the cache position corresponding to the PDSCH according to the grouping information of the downlink transmission related parameters by grouping the downlink transmission related parameters and sending the grouping information to the terminal, thereby ensuring that when the terminal receives two PDSCHs at the same time, the conflict can not occur when the downlink data with the same HARQ process number is cached, and simultaneously avoiding introducing extra indication bits into the DCI to indicate the HARQ process number.
It should be noted that, all implementation manners in the above-described embodiments of the buffering method for downlink data transmission are applicable to the embodiment of the base station, and the same technical effect can be achieved.
In some embodiments of the present invention, referring to fig. 7, there is further provided a base station, including a second memory 720, a second processor 700, a second transceiver 710, a bus interface, and a computer program stored on the second memory 720 and operable on the second processor 700, wherein the second processor 700 is configured to read the program in the second memory 720 and execute the following processes:
grouping parameters related to downlink transmission;
the second transceiver 710 sends the grouping information to the terminal, so that the terminal determines the buffer location corresponding to the received PDSCH according to the grouping information.
Where in fig. 7 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by the second processor 700 and various circuits of the memory represented by the second memory 720 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 second transceiver 710 may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium.
The second processor 700 is responsible for managing the bus architecture and general processing, and the second memory 720 may store data used by the second processor 700 when performing operations.
Optionally, the second processor 700 is configured to read the program in the second memory 720, and further perform the following processes: grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or grouping parameters related to the PDSCH; the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the second processor 700 is configured to read the program in the second memory 720, and further perform the following processes: grouping quasi-co-site QCLs, beam beams, or beam pair linked BPLs related to a PDCCH for scheduling PDSCH.
Optionally, the second processor 700 is configured to read the program in the second memory 720, and further perform the following processes: grouping QCLs, beams, or BPLs related to PDSCH.
Optionally, the second processor 700 is configured to read the program in the second memory 720, and further perform the following processes: reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH are grouped.
Optionally, the second processor 700 is configured to read the program in the second memory 720, and further perform the following processes: reference signal ports used for beam management or measurement related to PDSCH transmission beams are grouped.
Optionally, the second processor 700 is configured to read the program in the second memory 720, and further perform the following processes: and sending the grouping information to the terminal through higher layer signaling.
Optionally, the second processor 700 is configured to read the program in the second memory 720, and further perform the following processes: and after grouping the parameters related to the downlink transmission, transmitting the PDCCH and the PDSCH for scheduling the PDSCH on a beam corresponding to the parameters related to the downlink transmission.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
grouping parameters related to downlink transmission;
and sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information.
Optionally, the program further implements the following steps when executed by the processor: grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or grouping parameters related to the PDSCH; the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
Optionally, the program further implements the following steps when executed by the processor: grouping quasi-co-site QCLs, beam beams, or beam pair linked BPLs related to a PDCCH for scheduling PDSCH.
Optionally, the program further implements the following steps when executed by the processor: grouping QCLs, beams, or BPLs related to PDSCH.
Optionally, the program further implements the following steps when executed by the processor: reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH are grouped.
Optionally, the program further implements the following steps when executed by the processor: reference signal ports used for beam management or measurement related to PDSCH transmission beams are grouped.
Optionally, the program further implements the following steps when executed by the processor: and sending the grouping information to the terminal through higher layer signaling.
Optionally, the program further implements the following steps when executed by the processor: and after grouping the parameters related to the downlink transmission, transmitting the PDCCH and the PDSCH for scheduling the PDSCH on a beam corresponding to the parameters related to the downlink transmission.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (38)

1. A buffering method for downlink data transmission is characterized by comprising the following steps:
acquiring grouping information of parameters related to downlink transmission;
determining a cache position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information;
the step of acquiring the packet information of the parameters related to the downlink transmission comprises the following steps:
acquiring grouping information of parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Acquiring grouping information of parameters related to the PDSCH;
the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
2. The buffering method according to claim 1, wherein the step of obtaining the packet information of the parameter related to the downlink control channel PDCCH for scheduling the PDSCH comprises:
packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH, is acquired.
3. The buffering method according to claim 2, wherein the packet information includes packet information of QCLs related to PDCCHs for scheduling PDSCHs; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
determining a QCL corresponding to the received PDCCH;
determining a group to which the QCL corresponding to the PDCCH belongs according to the grouping information of the QCL;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs;
or
The grouping information comprises the grouping information of beams related to a PDCCH for scheduling a PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
determining beam corresponding to the received PDCCH;
determining a group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs;
or
The packet information includes packet information of BPL related to PDCCH for scheduling PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
determining a BPL corresponding to the received PDCCH;
determining a BPL (Business process language) attributive group corresponding to the PDCCH according to the grouping information of the BPL;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which the BPL corresponding to the PDCCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
4. The buffering method according to claim 1, wherein the step of obtaining the packet information of the parameter related to the PDSCH comprises:
grouping information of QCL, beam, or BPL related to PDSCH is acquired.
5. The buffering method according to claim 4, wherein the packet information includes packet information of QCLs associated with PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
acquiring QCL information corresponding to a PDSCH carried in Downlink Control Information (DCI);
determining a group to which the QCL corresponding to the PDSCH belongs according to the grouping information of the QCL;
determining a cache position corresponding to the PDSCH according to a group to which the QCL corresponding to the PDSCH belongs;
or
The grouping information comprises the grouping information of beams related to the PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
obtaining beam information corresponding to a PDSCH carried in Downlink Control Information (DCI);
determining a group to which the beam corresponding to the PDSCH belongs according to the beam grouping information;
determining a cache position corresponding to the PDSCH according to a group to which the beam corresponding to the PDSCH belongs;
or
The grouping information includes grouping information of BPL related to PDSCH; the step of determining the buffer position corresponding to the received physical downlink shared channel PDSCH according to the grouping information comprises the following steps:
acquiring BPL information corresponding to a PDSCH carried in Downlink Control Information (DCI);
determining a BPL (Business process language) attributive group corresponding to the PDSCH according to the grouping information of the BPL;
determining a cache position corresponding to the PDSCH according to a group to which the BPL corresponding to the PDSCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
6. The buffering method according to claim 1, wherein the step of obtaining the packet information of the parameter related to the downlink control channel PDCCH for scheduling the PDSCH comprises:
packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH is acquired.
7. The buffering method according to claim 6, wherein the step of determining, according to the grouping information, the buffering position corresponding to the received PDSCH (physical downlink shared channel) comprises:
determining a reference signal port corresponding to a received PDCCH transmission beam;
determining a group to which a reference signal port corresponding to the PDCCH transmission beam belongs according to grouping information of the reference signal port;
determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to a group to which a reference signal port corresponding to the PDCCH transmission beam belongs;
the reference signal ports belonging to different groups correspond to different cache positions.
8. The buffering method according to claim 1, wherein the step of obtaining the packet information of the parameter related to the PDSCH comprises:
packet information of reference signal ports used for beam management or measurement related to PDSCH transmission beams is acquired.
9. The buffering method according to claim 8, wherein the step of determining, according to the grouping information, the buffering position corresponding to the received PDSCH (physical downlink shared channel) comprises:
determining a reference signal port corresponding to a PDSCH transmission wave beam;
determining a group to which a reference signal port corresponding to the PDSCH transmission beam belongs according to grouping information of the reference signal port;
determining a cache position corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs;
the reference signal ports belonging to different groups correspond to different cache positions.
10. The buffering method according to claim 1, wherein the step of obtaining the packet information of the parameters related to downlink transmission comprises:
and receiving grouping information of parameters related to downlink transmission, which is sent by a base station through a high-level signaling.
11. A terminal, comprising:
the acquisition module is used for acquiring grouping information of parameters related to downlink transmission;
a determining module, configured to determine, according to the grouping information, a buffer location corresponding to the received PDSCH;
wherein the acquisition module comprises:
a first obtaining submodule, configured to obtain packet information of a parameter related to a downlink control channel PDCCH for scheduling a PDSCH; or
A second obtaining sub-module, configured to obtain grouping information of parameters related to the PDSCH;
the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
12. The terminal of claim 11, wherein the first obtaining sub-module comprises:
a first obtaining unit, configured to obtain packet information of a quasi-co-site QCL, a beam, or a beam pair linked BPL, which is related to a PDCCH for scheduling a PDSCH.
13. The terminal of claim 12, wherein the packet information comprises packet information of QCLs related to PDCCHs used for scheduling PDSCHs; the determining module comprises:
the first determining submodule is used for determining QCLs corresponding to the received PDCCH;
the first grouping determining submodule is used for determining a group to which the QCL corresponding to the PDCCH belongs according to grouping information of the QCL;
the first cache determining sub-module is used for determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the QCL corresponding to the PDCCH belongs;
or
The grouping information comprises the grouping information of beams related to a PDCCH for scheduling a PDSCH; the determining module comprises:
the second determining submodule is used for determining the beam corresponding to the received PDCCH;
the second grouping determining submodule is used for determining a group to which the beam corresponding to the PDCCH belongs according to the grouping information of the beam;
the second cache determining submodule is used for determining a cache position corresponding to the PDSCH scheduled by the PDCCH according to the group to which the beam corresponding to the PDCCH belongs;
or
The packet information includes packet information of BPL related to PDCCH for scheduling PDSCH; the determining module comprises:
a third determining submodule, configured to determine a BPL corresponding to the received PDCCH;
the third grouping determining submodule is used for determining a BPL (Business process language) attributive group corresponding to the PDCCH according to the grouping information of the BPL;
a third cache determining submodule, configured to determine, according to the group to which the BPL corresponding to the PDCCH belongs, a cache position corresponding to the PDSCH scheduled by the PDCCH;
wherein the parameters belonging to different groups correspond to different cache locations.
14. The terminal of claim 11, wherein the second obtaining sub-module comprises:
a second obtaining unit, configured to obtain grouping information of QCL, beam, or BPL related to the PDSCH.
15. The terminal of claim 14, wherein the packet information comprises packet information for QCLs associated with PDSCH; the determining module comprises:
a third obtaining submodule, configured to obtain QCL information corresponding to the PDSCH carried in the DCI;
a fourth determining grouping submodule, configured to determine, according to grouping information of the QCLs, a group to which the QCLs corresponding to the PDSCH belong;
a fourth cache determining sub-module, configured to determine, according to the group to which the QCL corresponding to the PDSCH belongs, a cache position corresponding to the PDSCH;
or
The grouping information comprises the grouping information of beams related to the PDSCH; the determining module comprises:
a fourth obtaining submodule, configured to obtain beam information corresponding to the PDSCH carried in the DCI;
a fifth determining grouping submodule, configured to determine, according to the beam grouping information, a group to which the beam corresponding to the PDSCH belongs;
a fifth cache determining submodule, configured to determine a cache position corresponding to the PDSCH according to the group to which the beam corresponding to the PDSCH belongs;
or
The grouping information includes grouping information of BPL related to PDSCH; the determining module comprises:
a fifth obtaining submodule, configured to obtain BPL information corresponding to the PDSCH carried in the DCI;
a sixth determining grouping submodule, configured to determine, according to grouping information of BPLs, a group to which the BPLs corresponding to the PDSCH belong;
a sixth cache determining submodule, configured to determine a cache position corresponding to the PDSCH according to a group to which the BPL corresponding to the PDSCH belongs;
wherein the parameters belonging to different groups correspond to different cache locations.
16. The terminal of claim 11, wherein the first obtaining sub-module comprises:
a third acquiring unit, configured to acquire packet information of a reference signal port used for beam management or measurement related to a PDCCH transmission beam for scheduling the PDSCH.
17. The terminal of claim 16, wherein the determining module comprises:
a fourth determining submodule, configured to determine a reference signal port corresponding to the received PDCCH transmission beam;
a seventh determining grouping submodule, configured to determine, according to grouping information of a reference signal port, a group to which the reference signal port corresponding to the PDCCH transmission beam belongs;
a seventh cache determining sub-module, configured to determine, according to the group to which the reference signal port corresponding to the PDCCH transmission beam belongs, a cache position corresponding to the PDSCH scheduled by the PDCCH;
the reference signal ports belonging to different groups correspond to different cache positions.
18. The terminal of claim 11, wherein the second obtaining sub-module comprises:
a fourth acquiring unit, configured to acquire packet information of a reference signal port used for beam management or measurement related to the PDSCH transmission beam.
19. The terminal of claim 18, wherein the determining module comprises:
a fifth determining submodule, configured to determine a reference signal port corresponding to a PDSCH transmission beam;
an eighth determining grouping submodule, configured to determine, according to grouping information of a reference signal port, a group to which the reference signal port corresponding to the PDSCH transmission beam belongs;
an eighth determining buffer submodule, configured to determine a buffer position corresponding to the PDSCH according to a group to which a reference signal port corresponding to the PDSCH transmission beam belongs;
the reference signal ports belonging to different groups correspond to different cache positions.
20. The terminal of claim 11, wherein the obtaining module comprises:
and the receiving submodule is used for receiving the grouping information of the parameters related to the downlink transmission, which is sent by the base station through the high-level signaling.
21. A terminal comprising a first memory, a first processor and a computer program stored on the first memory and executable on the first processor, wherein the first processor is configured to read the program from the first memory and execute the following processes:
acquiring grouping information of parameters related to downlink transmission;
determining a cache position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information;
wherein, the first processor is further used for reading the program in the first memory and executing the following processes:
acquiring grouping information of parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Acquiring grouping information of parameters related to the PDSCH;
the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
22. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of:
acquiring grouping information of parameters related to downlink transmission;
determining a cache position corresponding to the received Physical Downlink Shared Channel (PDSCH) according to the grouping information;
wherein the program when executed by the processor is further adapted to perform the steps of:
acquiring grouping information of parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Acquiring grouping information of parameters related to the PDSCH;
the grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
23. A buffering method for downlink data transmission is characterized by comprising the following steps:
grouping parameters related to downlink transmission;
sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to a received Physical Downlink Shared Channel (PDSCH) according to the grouping information;
the step of grouping the parameters related to the downlink transmission comprises the following steps:
grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Grouping parameters related to the PDSCH;
the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
24. The buffering method of claim 23, wherein the step of grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH comprises:
grouping quasi-co-site QCLs, beam beams, or beam pair linked BPLs related to a PDCCH for scheduling PDSCH.
25. The buffering method according to claim 23, wherein the step of grouping parameters related to PDSCH comprises:
grouping QCLs, beams, or BPLs related to PDSCH.
26. The buffering method of claim 23, wherein the step of grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH comprises:
reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling PDSCH are grouped.
27. The buffering method according to claim 23, wherein the step of grouping parameters related to PDSCH comprises:
reference signal ports used for beam management or measurement related to PDSCH transmission beams are grouped.
28. The buffering method according to claim 23, wherein the step of transmitting the packet information to the terminal comprises:
and sending the grouping information to the terminal through higher layer signaling.
29. The buffering method according to claim 23, wherein after grouping the parameters related to downlink transmission, further comprising:
and transmitting the PDCCH and the PDSCH for scheduling the PDSCH on a beam corresponding to the parameter related to the downlink transmission.
30. A base station, comprising:
the grouping module is used for grouping the parameters related to the downlink transmission;
the first sending module is used for sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to a received Physical Downlink Shared Channel (PDSCH) according to the grouping information;
wherein the grouping module comprises:
a first grouping submodule, configured to group parameters related to a downlink control channel PDCCH for scheduling the PDSCH; or
A second grouping submodule for grouping parameters related to the PDSCH;
the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
31. The base station of claim 30, wherein the first grouping submodule comprises:
a first grouping unit, configured to group the quasi-co-site QCL, the beam, or the beam pair linked BPL associated with the PDCCH for scheduling the PDSCH.
32. The base station of claim 30, wherein the second grouping sub-module comprises:
and a second grouping unit for grouping the QCLs, beams, or BPLs associated with the PDSCH.
33. The base station of claim 30, wherein the first grouping submodule comprises:
a third grouping unit, configured to group reference signal ports used for beam management or measurement related to a PDCCH transmission beam for scheduling the PDSCH.
34. The base station of claim 30, wherein the second grouping sub-module comprises:
a fourth grouping unit, configured to group reference signal ports used for beam management or measurement related to PDSCH transmission beams.
35. The base station of claim 30, wherein the first transmitting module comprises:
and the sending submodule is used for sending the grouping information to the terminal through high-level signaling.
36. The base station of claim 30, further comprising:
and a second sending module, configured to send the PDCCH and the PDSCH for scheduling the PDSCH on the beam corresponding to the parameter related to the downlink transmission after the grouping module groups the parameter related to the downlink transmission.
37. A base station comprising a second memory, a second processor and a computer program stored on the second memory and executable on the second processor, wherein the second processor is configured to read the program from the memory and perform the following process:
grouping parameters related to downlink transmission;
sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to a received Physical Downlink Shared Channel (PDSCH) according to the grouping information;
wherein, the second processor is used for reading the program in the second memory and further executing the following processes:
grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Grouping parameters related to the PDSCH;
the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
38. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of:
grouping parameters related to downlink transmission;
sending the grouping information to a terminal, so that the terminal determines a cache position corresponding to a received Physical Downlink Shared Channel (PDSCH) according to the grouping information;
wherein the program when executed by the processor further implements the steps of:
grouping parameters related to a downlink control channel (PDCCH) for scheduling the PDSCH; or
Grouping parameters related to the PDSCH;
the grouped grouping information comprises at least one group obtained by grouping the same parameter, each group comprises at least one parameter, and the parameter values of the parameters contained in different groups are different.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103796221A (en) * 2012-11-02 2014-05-14 电信科学技术研究院 Parameter configuration method and device in cognitive radio system

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* Cited by examiner, † Cited by third party
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CN103518345B (en) * 2012-05-11 2016-12-28 华为技术有限公司 Support the wireless communications method of HARQ, subscriber equipment and base station
US9635621B2 (en) * 2014-01-17 2017-04-25 Samsung Electronics Co., Ltd. Adaptations of dual connectivity operation to UE capability
KR102304089B1 (en) * 2014-09-25 2021-09-23 삼성전자 주식회사 Method and apparatus for device to device harq process management
US10862630B2 (en) * 2015-02-13 2020-12-08 Samsung Electronics Co., Ltd Method and system for contiguous HARQ memory management with memory splitting
US10750494B2 (en) * 2015-03-31 2020-08-18 Qualcomm Incorporated Management of dynamic transmission time interval scheduling for low latency communications

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103796221A (en) * 2012-11-02 2014-05-14 电信科学技术研究院 Parameter configuration method and device in cognitive radio system

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