CN111614385B - Method and equipment for processing multiple input multiple output layers - Google Patents

Method and equipment for processing multiple input multiple output layers Download PDF

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CN111614385B
CN111614385B CN201910544906.2A CN201910544906A CN111614385B CN 111614385 B CN111614385 B CN 111614385B CN 201910544906 A CN201910544906 A CN 201910544906A CN 111614385 B CN111614385 B CN 111614385B
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uplink
layers
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CN111614385A (en
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姜大洁
沈晓冬
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Abstract

The embodiment of the invention provides a method and equipment for processing the number of multiple input multiple output layers, wherein the processing method comprises the following steps: the terminal does not expect to receive the DMRS port number indicated by the DCI format1_1, wherein the DMRS port number indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1. The behavior of the terminal is defined aiming at the condition that the DMRS port indicated by the network side through the DCI format1_1 conflicts with the maximum downlink MIMO layer number indicated by the network side, so that the processing flow of the terminal can be perfected, and the reliability of communication can be ensured.

Description

Method and equipment for processing multiple input multiple output layers
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for processing Multiple-Input Multiple-Output (MIMO) layer number.
Background
First, downlink MIMO layer (layer) related collisions:
a New air interface (New Radio, NR) version 15(Rel-15) terminal must support 4 receiving antennas (4 receive (4Rx) for short) or 4 receiving antenna ports on a Frequency range 1 band greater than 2.5 GHz. In order to save power, the network side may configure the maximum downlink MIMO layers (maximum number of DL MIMO layers) for the terminal through signaling (e.g., Radio Resource Control (RRC) signaling, Media Access Control-Control Element (MAC-CE) or physical layer signaling).
The network side indicates a Demodulation Reference Signal (DMRS) port of current Downlink transmission for the terminal through an Antenna port (Antenna ports) field included in a Downlink Control Information (DCI) format (format)1_ 1.
If the DMRS ports indicated by the network side through the DCI format1_1 collide with the maximum downlink MIMO layer number indicated by the network side, for example, the DMRS ports number is greater than the maximum downlink MIMO layer number, how to define the behavior of the terminal is an urgent problem to be solved.
Second, uplink MIMO layer correlation conflict:
an NR Rel-15 terminal may support two transmit channels. In order to save power, the network side may configure the maximum uplink MIMO layer number (maximum number of UL MIMO layers) for the terminal through signaling (e.g., RRC signaling, MAC CE, or physical layer signaling);
the network side indicates the number of layers of uplink transmission through Precoding information and number of layers (layers) fields contained in the DCI format0_1, and indicates the DMRS port of uplink transmission through the antenna port field.
If the number of uplink transmission layers or DMRS ports indicated by the network side through the DCI format0_1 conflicts with the maximum number of uplink MIMO layers indicated by the network side, for example, the number of DMRS ports indicated by the DCI format0_1 is greater than the maximum number of uplink MIMO layers, or the number of uplink transmission layers indicated by the DCI format0_1 is greater than the maximum number of uplink MIMO layers, how to define the behavior of the terminal is an urgent problem to be solved.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a method and a device for processing Multiple Input Multiple Output (MIMO) layers, so as to solve a problem that a DMRS port indicated by a DCI format1_1 on a network side conflicts with a maximum downlink MIMO layer indicated by the network side, and a problem that a layer number of uplink transmission or a DMRS port indicated by a DCI format0_1 on the network side conflicts with a maximum uplink MIMO layer number indicated by the network side.
In a first aspect, a method for processing the number of mimo layers is provided, which is applied to a terminal and includes:
the terminal does not expect to receive the DMRS port number indicated by the DCI format1_1, wherein the DMRS port number indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
In a second aspect, a method for processing the number of mimo layers is provided, which is applied to a terminal and includes:
acquiring the number of DMRS ports indicated by the network equipment through the DCI format1_ 1;
if the number of the DMRS ports indicated by the DCI format1_1 does not match the maximum number of downlink MIMO layers indicated by the network device, setting the maximum number of the downlink MIMO layers as the number of the DMRS ports indicated by the DCI format1_1, or maintaining the maximum number of the downlink MIMO layers unchanged.
In a third aspect, an embodiment of the present invention further provides a method for processing the number of mimo layers, where the method is applied to a terminal, and includes:
the terminal does not expect to receive the uplink layer number or the DMRS port number indicated by the DCI format0_1, and the uplink layer number or the DMRS port number indicated by the DCI format0_1 is not matched with the maximum uplink MIMO layer number indicated by the network equipment; or the like, or, alternatively,
and if the terminal receives that the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1 is not matched with the maximum number of downlink MIMO layers indicated by the network equipment, not sending the uplink data scheduled by the DCI format0_ 1.
In a fourth aspect, an embodiment of the present invention further provides a method for processing the number of mimo layers, where the method is applied to a terminal, and includes:
acquiring the number of uplink layers or DMRS ports indicated by the network equipment through the DCI format0_ 1;
if the number of uplink layers or DMRS ports indicated by the DCI format0_1 does not match the maximum number of uplink MIMO layers indicated by the network device, setting the maximum number of uplink MIMO layers to the number of uplink layers or DMRS ports indicated by the DCI format0_1, or maintaining the maximum number of uplink MIMO layers unchanged.
In a fifth aspect, an embodiment of the present invention further provides a terminal, including:
the first processing module is configured to not expect to receive the DMRS port number indicated by the DCI format1_1, where the DMRS port number indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network device; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
In a sixth aspect, an embodiment of the present invention further provides a terminal, including:
the first receiving module is used for acquiring the number of the DMRS ports indicated by the network equipment through the DCI format1_ 1;
and a second processing module, configured to set the maximum number of downlink MIMO layers to the number of DMRS ports indicated by the DCI format1_1, or maintain the maximum number of downlink MIMO layers unchanged, if the number of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers indicated by the network device.
In a seventh aspect, an embodiment of the present invention further provides a terminal, including:
a third processing module, configured to not expect to receive the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1, where the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1 is not matched with the maximum number of uplink MIMO layers indicated by the network device; or, if the number of uplink layers or DMRS ports indicated by the DCI format0_1 received by the terminal is not matched with the maximum number of downlink MIMO layers indicated by the network device, not sending the uplink data scheduled by the DCI format0_ 1.
In an eighth aspect, an embodiment of the present invention further provides a terminal, including:
the third receiving module is used for acquiring the number of uplink layers or the number of DMRS ports indicated by the network equipment through the DCI format0_ 1;
and a fourth processing module, configured to set the maximum uplink MIMO layer number to the uplink layer number or the DMRS port number indicated by the DCI format0_1, or maintain the maximum uplink MIMO layer number unchanged, if the uplink layer number or the DMRS port number indicated by the DCI format0_1 is greater than the maximum uplink MIMO layer number indicated by the network device.
In a ninth aspect, an embodiment of the present invention further provides a terminal, including: a processor, a memory and a program stored on the memory and executable on the processor, the program implementing the steps of the method for processing the number of mimo layers as described above when executed by the processor.
In a tenth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements the steps of the method for processing the number of mimo layers as described above.
In the embodiment of the invention, the terminal behavior is defined aiming at the situation that the DMRS port indicated by the network side through the DCI format1_1 conflicts with the maximum downlink MIMO layer number indicated by the network side, and the situation that the uplink transmission layer number indicated by the network side through the DCI format0_1 or the DMRS port conflicts with the maximum uplink MIMO layer number indicated by the network side, so that the processing flow of the terminal can be perfected, and the reliability of communication is ensured.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for processing the number of layers of the MIMO system according to an embodiment of the present invention;
FIG. 3 is a second flowchart of a method for processing the number of layers of the MIMO system according to the embodiment of the present invention;
fig. 4 is a third flowchart of a method for processing mimo layers according to an embodiment of the present invention;
FIG. 5 is a fourth flowchart of a method for processing a number of layers for MIMO according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a second schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 8 is a third schematic structural diagram of a terminal according to an embodiment of the present invention;
FIG. 9 is a fourth schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 10 is a fifth schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The technology described herein is not limited to a 5th-generation (5G) system and a later-evolution communication system, and is not limited to an LTE/LTE evolution (LTE-a) system, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.
The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system can implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA)), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX)), IEEE 802.20, Flash-OFDM, and the like. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.
In order to better understand the embodiment of the present invention, the following technical points are introduced:
firstly, regarding DCI formats (DCI formats):
table 1: related introduction of DCI format.
Figure BDA0002103662990000061
The DCI format0_ 0, the DCI format0_1, and the DCI format1_ 0, the DCI format1_1 are scheduling DCIs, and the others are non-scheduling DCIs.
Second, the Precoding information and number of layers field and Antenna ports field for DCI format0_ 1:
the Precoding information and number of layers field indicates the number of layers for uplink transmission, see tables 2 to 5. The Antenna ports field indicates DMRS ports for uplink transmission, see tables 6 to 9.
Table 2: precoding information and layer number for 4antenna ports, transform coder disabled and maxRank 2or 3or 4(Precoding information and number of layers, for 4antenna ports, if transform coder disabled and maxRank 2or 3or 4).
Figure BDA0002103662990000071
Table 3: precoding information and layer number for 4antenna ports, transform coder is disabled and maxRank is 1(Precoding information and number of layers for 4antenna ports, if transform coder is enabled, or if transform coder is disabled and maxRank is 1).
Figure BDA0002103662990000081
Table 4: precoding information and number of layers for 2antenna ports, transform coder disabled and maxRank 2(Precoding information and number of layers for 2antenna ports, if transform coder is disabled and maxRank 2).
Figure BDA0002103662990000082
Table 5: precoding information and layer number for 2antenna ports, transform precoder enabled, or transform precoder disabled and maxRank 1(Precoding information and number of layers, for 2antenna ports, if transform precoder is enabled, or if transform precoder is disabled and maxRank 1).
Figure BDA0002103662990000091
Table 6: an Antenna port, which is enabled with transform coder, dmrs-Type ═ 1, maxLength ═ 1(Antenna port(s), transform coder is enabled, dmrs-Type ═ 1, maxLength ═ 1).
Figure BDA0002103662990000092
Table 7: an Antenna port, a transform coder is enabled, dmrs-Type ═ 1, maxLength ═ 2(Antenna port(s), transform coder is enabled, dmrs-Type ═ 1, maxLength ═ 2).
Figure BDA0002103662990000093
Table 8: antenna port, transform coder is disabled, dmrs-Type ═ 1, maxLength ═ 1, rank ═ 1(Antenna port(s), transform coder is disabled, dmrs-Type ═ 1, maxLength ═ 1, and rank ═ 1).
Value Number of DMRS CDM group(s)without data DMRS port(s)
0 1 0
1 1 1
2 2 0
3 2 1
4 2 2
5 2 3
6-7 Reserved Reserved
Table 9: antenna port, transform coder is disabled, dmrs-Type ═ 1, maxLength ═ 1, rank ═ 2(Antenna port(s), transform coder is disabled, dmrs-Type ═ 1, maxLength ═ 1, rank ═ 2).
Value Number of DMRS CDM group(s)without data DMRS port(s)
0 1 0,1
1 2 0,1
2 2 2,3
3 2 0,2
4-7 Reserved Reserved
Third, the Antenna ports field of DCI format1_ 1:
the Antenna ports field indicates DMRS ports for downlink transmission, see table 10, table 11, table 12, and table 13.
Table 10: antenna port (1000+ DMRS port), DMRS-Type ═ 1, maxLength ═ 1(Antenna port(s) (1000+ DMRS port), DMRS-Type ═ 1, maxLength ═ 1).
Figure BDA0002103662990000101
Table 11: antenna port (1000+ DMRS port), DMRS-Type ═ 1, maxLength ═ 2(Antenna port(s) (1000+ DMRS port), DMRS-Type ═ 1, maxLength ═ 2).
Figure BDA0002103662990000111
Table 12: antenna port (1000+ DMRS port), DMRS-Type ═ 2, maxLength ═ 1(Antenna port(s) (1000+ DMRS port), DMRS-Type ═ 2, maxLength ═ 1).
Figure BDA0002103662990000121
Table 13: antenna port (1000+ DMRS port), DMRS-Type ═ 2, maxLength ═ 2(Antenna port(s) (1000+ DMRS port), DMRS-Type ═ 2, maxLength ═ 2).
Figure BDA0002103662990000131
Figure BDA0002103662990000141
Embodiments of the present invention are described below with reference to the accompanying drawings. The method and the device for processing the number of the layers with multiple inputs and multiple outputs provided by the embodiment of the invention can be applied to a wireless communication system. Referring to fig. 1, an architecture diagram of a wireless communication system according to an embodiment of the present invention is shown. As shown in fig. 1, the wireless communication system may include: network device 10 and terminal 11, terminal 11 may be referred to as UE11, and terminal 11 may communicate (transmit signaling or transmit data) with network device 10 and network device 11. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.
The network device 10 provided in the embodiment of the present invention may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network device in a 5G system (e.g., a next generation base station (gNB) or a Transmission and Reception Point (TRP)).
The terminal 11 provided in the embodiment of the present invention may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device.
Referring to fig. 2, an embodiment of the present invention provides a method for processing MIMO layer numbers, where an execution main body of the method is a terminal, and the method includes: step 201.
Step 201: the terminal does not expect to receive the DMRS port number indicated by the DCI format1_1, wherein the DMRS port number indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
In some embodiments, the step of determining that the number of DMRS ports indicated by the DCI format1_1 does not match the maximum number of downlink MIMO layers indicated by the network device includes:
the number of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers indicated by the network equipment. Illustratively, the number (3) of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers (2).
In the embodiment of the invention, aiming at the condition that the DMRS port indicated by the DCI format1_1 at the network side conflicts with the maximum downlink MIMO layer number indicated by the network side, the behavior of the terminal is defined, the processing flow of the terminal is perfected, and the reliability of communication is ensured.
Referring to fig. 3, an embodiment of the present invention provides a method for processing MIMO layer numbers, where an execution main body of the method is a terminal, and the method includes: step 301 and step 302.
Step 301: acquiring the number of DMRS ports indicated by the network equipment through the DCI format1_ 1;
step 302: and if the number of the DMRS ports indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network equipment, setting the maximum downlink MIMO layer number as the number of the DMRS ports indicated by the DCI format1_1, or keeping the maximum downlink MIMO layer number unchanged.
Exemplarily, if the number (3) of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers (2), the maximum number of downlink MIMO layers is set to the number of DMRS ports indicated by the DCI format1_1, or the maximum number of downlink MIMO layers is maintained.
Exemplarily, when the number of DMRS ports indicated by the DCI format1_1 does not match the maximum number of downlink MIMO layers indicated by the network device, the terminal considers that a signaling for changing the maximum number of downlink MIMO layers sent by a (miss) network device (e.g., a base station) is missed, especially, the signaling does not support ACK/NACK feedback, so that the terminal sets the maximum number of downlink MIMO layers to the number of DMRS ports indicated by the DCI format1_ 1; or, the terminal assumes that the network device has reconfigured the maximum downlink MIMO layer number as the DMRS port number indicated by the DCI format1_ 1.
In some embodiments, after step 302, the processing method further comprises: and sending a first message to the network equipment, wherein the first message indicates that the maximum downlink MIMO layer number is set as the DMRS port number indicated by the DCI format1_ 1.
In some embodiments, after step 302, the processing method further comprises: and sending a second message to the network equipment, wherein the second message is used for requesting the network equipment to send the maximum downlink MIMO layer number to the terminal.
In some embodiments, after step 302, or after sending the second message to the network device, the processing method further comprises: and receiving the maximum downlink MIMO layer number retransmitted by the network equipment.
In the embodiment of the invention, aiming at the condition that the DMRS port indicated by the DCI format1_1 at the network side conflicts with the maximum downlink MIMO layer number indicated by the network side, the behavior of the terminal is defined, the processing flow of the terminal is perfected, and the reliability of communication is ensured.
Referring to fig. 4, an embodiment of the present invention provides a method for processing MIMO layer numbers, where an execution main body of the method is a terminal, and the method includes: step 401.
Step 401: the terminal does not expect to receive the uplink layer number or the DMRS port number indicated by the DCI format0_1, wherein the uplink layer number or the DMRS port number indicated by the DCI format0_1 is not matched with the maximum uplink MIMO layer number indicated by the network equipment; or, if the terminal receives that the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1 does not match the maximum number of downlink MIMO layers indicated by the network device, the terminal does not send the uplink data scheduled by the DCI format0_ 1.
In some embodiments, the step of determining that the number of uplink layers or DMRS ports indicated by the DCI format0_1 does not match the maximum number of uplink MIMO layers indicated by the network device includes: the number of uplink layers or DMRS ports indicated by the DCI format0_1 is greater than the maximum number of uplink MIMO layers indicated by the network device.
It can be understood that there is a mismatch between the number of uplink layers and the number of DMRS ports, if there is more than the maximum number of uplink MIMO layers indicated by the network device.
In the embodiment of the present invention, for a situation where the number of uplink transmission layers or DMRS ports indicated by the network side through the DCI format0_1 conflicts with the maximum uplink MIMO layer number indicated by the network side, for example, the number (2) of DMRS ports indicated by the DCI format0_1 is greater than the maximum uplink MIMO layer number (1), or the number (2) of uplink transmission layers indicated by the DCI format0_1 is greater than the maximum uplink MIMO layer number (1), a behavior of the terminal is defined, a processing flow of the terminal is perfected, and reliability of communication is ensured.
Referring to fig. 5, an embodiment of the present invention provides a method for processing MIMO layer numbers, which is applied to a terminal, and includes the specific steps of: step 501 and step 502.
Step 501: acquiring the number of uplink layers or DMRS ports indicated by the network equipment through the DCI format0_ 1;
step 502: and if the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1 is not matched with the maximum number of uplink MIMO layers indicated by the network equipment, setting the maximum number of uplink MIMO layers as the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1, or keeping the maximum number of uplink MIMO layers unchanged.
Exemplarily, the mismatch between the number of uplink layers or DMRS ports indicated by the DCI format0_1 and the maximum number of uplink MIMO layers indicated by the network device includes: the number of uplink layers or DMRS ports indicated by the DCI format0_1 is greater than the maximum number of uplink MIMO layers indicated by the network device. For example, the number (2) of DMRS ports indicated by DCI format0_1 is greater than the maximum uplink MIMO layer number (1), or the number (2) of uplink transmission layers indicated by DCI format0_1 is greater than the maximum uplink MIMO layer number (1).
It can be understood that there is a mismatch between the number of uplink layers and the number of DMRS ports, if there is more than the maximum number of uplink MIMO layers indicated by the network device.
In some embodiments, after step 502, the processing method further comprises: and sending a third message to the network equipment, wherein the third message indicates that the value of the maximum uplink MIMO layer number is set as the DMRS port number indicated by the DCI format0_ 1.
In some embodiments, after step 502, the processing method further comprises: and sending a fourth message to the network equipment, wherein the fourth message is used for requesting the network equipment to send the maximum uplink MIMO layer number to the terminal.
In some embodiments, after step 502 or after sending the fourth message to the network device, the processing method further comprises: and receiving the maximum uplink MIMO layer number retransmitted by the network equipment.
In the embodiment of the invention, the behavior of the terminal is defined aiming at the condition that the number of uplink transmission layers or DMRS ports indicated by DCI format0_1 of the network side conflicts with the maximum uplink MIMO number of layers indicated by the network side, the processing flow of the terminal is perfected, and the reliability of communication is ensured.
The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the method for processing the number of the MIMO layers in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the method, and repeated parts are not described again.
Referring to fig. 6, an embodiment of the present invention further provides a terminal, where the terminal 600 includes:
a first processing module 601, configured to not expect to receive the number of DMRS ports of a demodulation reference signal indicated by a DCI format1_1 of downlink control information, where the number of DMRS ports indicated by the DCI format1_1 is not matched with the maximum number of downlink MIMO layers indicated by a network device; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
In some embodiment, the step of determining that the number of DMRS ports indicated by the DCI format1_1 does not match the maximum number of downlink MIMO layers indicated by the network device includes: the number of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers indicated by the network equipment.
The terminal provided by the embodiment of the present invention can implement the above-mentioned embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the method for processing the number of the MIMO layers in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the method, and repeated parts are not described again.
Referring to fig. 7, an embodiment of the present invention further provides a terminal, where the terminal 700 includes:
a first receiving module 701, configured to obtain the number of DMRS ports indicated by the network device through DCI format1_ 1;
a second processing module 702, configured to set the maximum number of downlink MIMO layers to the number of DMRS ports indicated by the DCI format1_1, or maintain the maximum number of downlink MIMO layers unchanged, if the number of DMRS ports indicated by the DCI format1_1 does not match the maximum number of downlink MIMO layers indicated by the network device.
In some embodiment modes, the terminal further includes: and a first sending module, configured to send a first message to the network device, where the first message indicates that the maximum downlink MIMO layer number is set to the DMRS port number indicated by the DCI format1_ 1.
In some embodiment modes, the terminal further includes: a second sending module, configured to send a second message to the network device, where the second message is used to request the network device to send the maximum number of downlink MIMO layers to the terminal.
In some embodiment modes, the terminal further includes: and the second receiving module is used for receiving the maximum downlink MIMO layer number retransmitted by the network equipment.
The terminal provided by the embodiment of the present invention can implement the above-mentioned embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the method for processing the number of the MIMO layers in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the method, and repeated parts are not described again.
Referring to fig. 8, an embodiment of the present invention further provides a terminal, where the terminal 800 includes:
a third processing module 801, configured to enable the terminal to not expect to receive the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1, where the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1 is not matched with the maximum number of uplink MIMO layers indicated by the network device; or, if the number of uplink layers or DMRS ports indicated by the DCI format0_1 received by the terminal is not matched with the maximum number of downlink MIMO layers indicated by the network device, not sending the uplink data scheduled by the DCI format0_ 1.
In some embodiment, the step of determining that the number of uplink layers or DMRS ports indicated by the DCI format0_1 does not match the maximum number of uplink MIMO layers indicated by the network device includes:
the number of uplink layers or DMRS ports indicated by the DCI format0_1 is greater than the maximum number of uplink MIMO layers indicated by the network device.
The terminal provided by the embodiment of the present invention can implement the above-mentioned embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
The embodiment of the invention also provides a terminal, and as the principle of solving the problem of the terminal is similar to the method for processing the number of the MIMO layers in the embodiment of the invention, the implementation of the terminal can refer to the implementation of the method, and repeated parts are not described again.
Referring to fig. 9, an embodiment of the present invention further provides a terminal, where the terminal 900 includes:
a third receiving module 901, configured to acquire the number of uplink layers or the number of DMRS ports indicated by the network device through DCI format0_ 1;
a fourth processing module 902, configured to set the maximum uplink MIMO layer number to the uplink layer number or the DMRS port number indicated by the DCI format0_1, or maintain the maximum uplink MIMO layer number unchanged, if the uplink layer number or the DMRS port number indicated by the DCI format0_1 does not match the maximum uplink MIMO layer number indicated by the network device.
In some embodiment modes, the terminal further includes: and a third sending module, configured to send a third message to the network device, where the third message indicates that the maximum uplink MIMO layer number value is set to the DMRS port number indicated by the DCI format0_ 1.
In some embodiment modes, the terminal further includes: and a fourth sending module, configured to send a fourth message to the network device, where the fourth message is used to request the network device to send the maximum uplink MIMO layer number to the terminal.
In some embodiment modes, the terminal further includes: and the fourth receiving module is configured to receive the maximum uplink MIMO layer number retransmitted by the network device.
The terminal provided by the embodiment of the present invention can implement the above-mentioned embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
Referring to fig. 10, fig. 10 is a structural diagram of a terminal applied in the embodiment of the present invention, as shown in fig. 10, the terminal 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein the processor 1001 may be responsible for managing the bus architecture and general processing. The memory 1003 may store data used by the processor 1001 in performing operations.
In one embodiment of the present invention, terminal 1000 can further comprise: a computer program stored on the memory 1003 and executable on the processor 1001, which when executed by the processor 1001 implements the steps in the above method.
In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The terminal provided by the embodiment of the present invention can execute the above method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Memory (ROM), Erasable programmable Read-Only Memory (EPROM), Electrically Erasable programmable Read-Only Memory (EEPROM), registers, a hard disk, a removable hard disk, a compact disc Read-Only Memory (cd-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In addition, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims (13)

1. A method for processing the number of MIMO layers is applied to a terminal, and is characterized by comprising the following steps:
the terminal does not expect to receive the DMRS port number indicated by downlink control information DCI format1_1, wherein the DMRS port number indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
2. The method of claim 1, wherein the step of determining that the number of DMRS ports indicated by the DCI format1_1 does not match the maximum number of downlink MIMO layers indicated by the network device comprises:
the number of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers indicated by the network equipment.
3. A processing method of multiple input multiple output layers is applied to a terminal, and is characterized by comprising the following steps:
the terminal does not expect to receive the uplink layer number or the DMRS port number indicated by the DCI format0_1, and the uplink layer number or the DMRS port number indicated by the DCI format0_1 is not matched with the maximum uplink MIMO layer number indicated by the network equipment; or the like, or, alternatively,
and if the uplink layer number or the DMRS port number indicated by the DCI format0_1 received by the terminal is not matched with the maximum downlink MIMO layer number indicated by the network equipment, not sending the uplink data scheduled by the DCI format0_ 1.
4. The processing method according to claim 3, wherein the step of determining that the number of uplink layers or DMRS ports indicated by the DCI format0_1 does not match the maximum number of uplink MIMO layers indicated by the network device comprises:
the number of uplink layers or DMRS ports indicated by the DCI format0_1 is greater than the maximum number of uplink MIMO layers indicated by the network device.
5. A processing method of multiple input multiple output layers is applied to a terminal, and is characterized by comprising the following steps:
acquiring the number of uplink layers or DMRS ports indicated by the network equipment through the DCI format0_ 1;
if the number of uplink layers or DMRS ports indicated by the DCI format0_1 does not match the maximum number of uplink MIMO layers indicated by the network device, setting the maximum number of uplink MIMO layers to the number of uplink layers or DMRS ports indicated by the DCI format0_1, or maintaining the maximum number of uplink MIMO layers unchanged.
6. The processing method according to claim 5, characterized in that it further comprises:
and sending a third message to the network equipment, wherein the third message indicates that the value of the maximum uplink MIMO layer number is set as the DMRS port number indicated by the DCI format0_ 1.
7. The processing method according to claim 5, characterized in that it further comprises:
and sending a fourth message to the network equipment, wherein the fourth message is used for requesting the network equipment to send the maximum uplink MIMO layer number to the terminal.
8. The processing method according to claim 5, characterized in that it further comprises:
and receiving the maximum uplink MIMO layer number retransmitted by the network equipment.
9. A terminal, comprising:
the first processing module is configured to not expect to receive the DMRS port number indicated by the DCI format1_1, where the DMRS port number indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network device; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
10. A terminal, comprising:
the third processing module is configured to not expect to receive the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1, where the number of uplink layers or the number of DMRS ports indicated by the DCI format0_1 is not matched with the maximum number of uplink MIMO layers indicated by the network device; or, if the number of uplink layers or DMRS ports indicated by the DCI format0_1 received by the terminal is not matched with the maximum number of downlink MIMO layers indicated by the network device, not sending the uplink data scheduled by the DCI format0_ 1.
11. A terminal, comprising:
the third receiving module is used for acquiring the number of uplink layers or the number of DMRS ports indicated by the network equipment through the DCI format0_ 1;
and a fourth processing module, configured to set the maximum uplink MIMO layer number to the uplink layer number or the DMRS port number indicated by the DCI format0_1, or maintain the maximum uplink MIMO layer number unchanged, if the uplink layer number or the DMRS port number indicated by the DCI format0_1 is greater than the maximum uplink MIMO layer number indicated by the network device.
12. A terminal, comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method for processing a number of mimo layers according to any one of claims 1 to 2; or the method of processing the number of mimo layers according to any one of claims 3 to 4; or the steps of the method of processing the number of mimo layers according to any of claims 5 to 8.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for processing the number of mimo layers according to any one of claims 1 to 2; or the method of processing the number of mimo layers according to any one of claims 3 to 4; or the steps of the method of processing the number of mimo layers according to any of claims 5 to 8.
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