CN109787667B

CN109787667B - Method and device used in user equipment and base station for wireless communication

Info

Publication number: CN109787667B
Application number: CN201711110224.8A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2017-11-12
Filing date: 2017-11-12
Publication date: 2020-06-30
Anticipated expiration: 2037-11-12
Also published as: CN109787667A

Abstract

The application discloses a method and a device in a user equipment, a base station and the like used for wireless communication. The user equipment transmits the first channel information, the first channel quality indication and the second channel quality indication. Wherein the first channel information comprises at least one of { a first rank indication, a first precoding matrix indication }; the first channel quality indication and the second channel quality indication respectively correspond to a first mapping table and a second mapping table; the first channel information is used to generate the first channel quality indication and the second channel quality indication. The method reduces the reporting overhead of the channel information and the overhead of the related wireless signals for measuring the channel information.

Description

Method and device used in user equipment and base station for wireless communication

Technical Field

The present application relates to a method and an apparatus for transmitting a radio signal in a wireless communication system, and more particularly, to a method and an apparatus for transmitting a radio signal in a wireless communication system supporting a cellular network.

Background

In a wireless communication system supporting multi-antenna transmission, it is a common technique for a UE (User Equipment) to feed back CSI (Channel Status Information) to assist a base station to perform multi-antenna processing. In LTE, CSI includes at least one of { RI (Rank indication), PMI (Precoding matrix indication), CQI (Channel quality indication) }.

In the 5G system, eMBB (enhanced Mobile Broadband), and URLLC (Ultra Reliable and Low Latency Communication) are two typical traffic types. To realize good support for these two services, both the eMBB and the URLLC need to feed back the corresponding CSI. In 3GPP (3rd Generation Partner Project) new air interface discussions, it has been agreed that the target BLER (Block Error Rate) of the CQI mapping table applicable to the eMBB service is 10%, and the target BLER of the CQI mapping table applicable to the URLLC service is one of two values configured by higher layers.

Disclosure of Invention

The inventor finds, through research, that in a 5G system, eMBB and URLLC services may occur on the same time-frequency resource, and CSI reporting for both services is based on measurement of radio signals. If the CSI reporting of the eMBB and URLLC services can be based on the same radio signal measurement, the overhead of the radio signal for CSI measurement can be saved, thereby improving the transmission throughput. In addition, how to reduce the overhead of CSI reporting for the eMBB and URLLC services is a problem to be solved.

In view of the above, the present application discloses a solution. It should be noted that, without conflict, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.

The application discloses a method in user equipment for wireless communication, which is characterized by comprising the following steps:

-transmitting the first channel information, the first channel quality indication and the second channel quality indication;

wherein the first channel information comprises at least one of { a first rank indication, a first precoding matrix indication }; the first channel quality indication and the second channel quality indication respectively correspond to a first mapping table and a second mapping table; the first channel information is used to generate the first channel quality indication and the second channel quality indication.

As an embodiment, the essence of the above method is that the first channel information and the first channel quality indication correspond to CSI of an eMBB service, the second channel quality indication corresponds to CSI of a URLLC service, the first mapping table corresponds to a CQI mapping table of the eMBB service, the second mapping table corresponds to a CQI mapping table of the URLLC service, and the CSI of the URLLC service is related to the CSI of the eMBB service. The method has the advantage that the CSI reporting overhead of the URLLC service is reduced by exploring the relation between the CSI of the URLLC service and the CSI of the eMBB service.

According to one aspect of the application, the method described above is characterized by comprising:

-receiving a first wireless signal;

wherein measurements for the first wireless signal are used to generate the first channel information, the first channel quality indication, and the second channel quality indication.

As an embodiment, the method has the advantage that CSI reporting for the eMBB and URLLC services is based on measurement of the same radio signal, so that overhead of the radio signal for CSI measurement can be saved, thereby improving transmission throughput.

According to an aspect of the application, the above method is characterized in that the generation of the first channel quality indication is based on an assumption that the first channel information is adopted, and the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted; the K target precoding matrices are related to the first precoding matrix indicator, the K being a positive integer.

As an embodiment, the above method has an advantage that the UE acquires the precoding matrix of URLLC from the PMI of the eMBB without feeding back the PMI of URLLC traffic, so that CSI feedback overhead of URLLC can be saved.

According to an aspect of the application, the above method is characterized in that the first precoding matrix indication is used for determining L reference column vectors, the L being a positive integer not greater than the K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

According to an aspect of the application, the above method is characterized in that the first precoding matrix indicator is used to determine K reference precoding matrices, the number of column vectors of the K reference precoding matrices is M, and M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

According to an aspect of the application, the above method is characterized in that any one of the K target precoding matrices is composed of N column vectors of the associated one of the K reference precoding matrices, where N is a positive integer not greater than M.

-transmitting first indication information;

wherein the first indication information is used to determine the K target precoding matrices from the K reference precoding matrices, respectively.

According to an aspect of the present application, the above method is characterized in that the first precoding matrix indicator corresponds to K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

-receiving second indication information;

wherein the second indication information is used to determine the K reference precoding matrices from the K precoding matrices, respectively.

As an embodiment, the above method has a benefit that, when the value of Q is large, a large bit overhead may be required to transmit the first indication information, and the feedback overhead of the first indication information is reduced by the second indication information.

The application discloses a method in a base station device for wireless communication, which is characterized by comprising the following steps:

-receiving first channel information, a first channel quality indication and a second channel quality indication;

-transmitting a first wireless signal;

-receiving first indication information;

-sending second indication information;

The application discloses user equipment for wireless communication, characterized by, includes:

-a first transmitter module for transmitting first channel information, a first channel quality indication and a second channel quality indication;

As an embodiment, the user equipment described above is characterized by including:

-a first receiver module receiving a first wireless signal;

As an embodiment, the above user equipment is characterized in that the generation of the first channel quality indication is based on an assumption that the first channel information is adopted, and the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted; the K target precoding matrices are related to the first precoding matrix indicator, the K being a positive integer.

As an embodiment, the above user equipment is characterized in that the first precoding matrix indicator is used to determine L reference column vectors, where L is a positive integer not greater than K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

As an embodiment, the above user equipment is characterized in that the first precoding matrix indicator is used to determine K reference precoding matrices, the number of column vectors of the K reference precoding matrices is M, and M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

As an embodiment, the above user equipment is characterized in that any one of the K target precoding matrices is composed of N column vectors of one of the K reference precoding matrices, where N is a positive integer not greater than M.

As an embodiment, the ue is characterized in that the first transmitter module further transmits first indication information; wherein the first indication information is used to determine the K target precoding matrices from the K reference precoding matrices, respectively.

As an embodiment, the user equipment is characterized in that the first precoding matrix indicator corresponds to K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

As an embodiment, the ue is characterized in that the first receiver module further receives second indication information; wherein the second indication information is used to determine the K reference precoding matrices from the K precoding matrices, respectively.

The application discloses a base station equipment for wireless communication, characterized by, includes:

-a second receiver module receiving the first channel information, the first channel quality indication and the second channel quality indication;

As an embodiment, the base station apparatus described above is characterized by comprising:

-a second transmitter module for transmitting a first wireless signal;

As an embodiment, the base station apparatus is characterized in that the generation of the first channel quality indication is based on an assumption that the first channel information is adopted, and the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted; the K target precoding matrices are related to the first precoding matrix indicator, the K being a positive integer.

As an embodiment, the above base station apparatus is characterized in that the first precoding matrix indicator is used to determine L reference column vectors, where L is a positive integer not greater than K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

As an embodiment, the base station device is characterized in that the first precoding matrix indicator is used to determine K reference precoding matrices, the number of column vectors of the K reference precoding matrices is M, and M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

As an embodiment, the base station device is characterized in that any one of the K target precoding matrices is composed of N column vectors of one of the K reference precoding matrices, where N is a positive integer not greater than M.

As an embodiment, the base station device is characterized in that the second receiver module further receives first indication information; wherein the first indication information is used to determine the K target precoding matrices from the K reference precoding matrices, respectively.

As an embodiment, the base station device is characterized in that the first precoding matrix indicator corresponds to K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

As an embodiment, the base station device is characterized in that the second transmitter module further transmits second indication information; wherein the second indication information is used to determine the K reference precoding matrices from the K precoding matrices, respectively.

As an example, compared with the prior art, the present application has the following main technical advantages:

CSI reporting for eMBB and URLLC services is based on the same radio signal measurement, so that the overhead of the radio signal for CSI measurement can be saved, thereby improving the transmission throughput.

And reducing the CSI reporting overhead of the URLLC service by exploring the relationship between the CSI of the URLLC service and the CSI of the eMBB service.

UE obtains precoding matrix of URLLC from PMI of eMBB, and does not feed back PMI of URLLC service, so CSI feedback overhead of URLLC can be saved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

fig. 1 shows a flow chart of a first channel information, a first channel quality indication and a second channel quality indication according to an embodiment of the application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

figure 4 shows a schematic diagram of an evolved node and a UE according to an embodiment of the present application;

FIG. 5 shows a flow diagram of wireless transmission according to one embodiment of the present application;

fig. 6 shows a schematic diagram of a relationship of a first channel quality indication and first channel information, a relationship of a second channel quality indication and first channel information according to an embodiment of the application;

FIG. 7 shows a schematic diagram of the relationship of a first precoding matrix and K target precoding matrices according to an embodiment of the application;

FIG. 8 shows a schematic diagram of the relationship of a first precoding matrix and K target precoding matrices according to another embodiment of the present application;

FIG. 9 shows a schematic diagram of the relationship of K reference precoding matrices and K target precoding matrices according to an embodiment of the application;

FIG. 10 shows a schematic diagram of a first precoding matrix indication being used for determining K reference precoding matrices according to an embodiment of the application;

11A-11C respectively illustrate schematic diagrams of first indication information according to one embodiment of the present application;

12A-12C respectively illustrate schematic diagrams of second indication information according to an embodiment of the present application;

fig. 13 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 14 shows a block diagram of a processing device used in a base station apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of first channel information, a first channel quality indication and a second channel quality indication, as shown in fig. 1.

In embodiment 1, the ue in this application sends first channel information, a first channel quality indicator, and a second channel quality indicator. Wherein the first channel information comprises at least one of { a first rank indication, a first precoding matrix indication }; the first channel quality indication and the second channel quality indication respectively correspond to a first mapping table and a second mapping table; the first channel information is used to generate the first channel quality indication and the second channel quality indication.

As an embodiment, the first rank indication is an RI.

As an embodiment, the first precoding matrix indication is a PMI.

As one embodiment, the first channel quality indication is a CQI.

As one embodiment, the second channel quality indication is a CQI.

As an embodiment, the first mapping table indicates a mapping of the first channel quality indication and a modulation coding scheme.

As an embodiment, the second mapping table indicates a mapping of the second channel quality indication and a modulation coding scheme.

As an embodiment, the first mapping table and the second mapping table are the same.

As an embodiment, the first mapping table and the second mapping table are different.

As an embodiment, the first mapping table corresponds to an eMBB service.

As an embodiment, the second mapping table corresponds to URLLC traffic.

As an embodiment, the first channel information is carried by physical layer signaling.

As an embodiment, the first channel Information is carried by UCI (Uplink Control Information) signaling.

As an embodiment, the first channel information is a field (field) in UCI signaling, and the field includes a positive integer number of bits.

As an embodiment, the first channel information is carried by an uplink physical layer data channel (i.e., an uplink channel that can be used to carry physical layer data).

As an embodiment, the first channel information is carried by a PUSCH (Physical Uplink shared channel).

As an embodiment, the first channel information is carried by a short PUSCH (short PUSCH).

As an embodiment, the first channel information is carried by NR-PUSCH (New Radio PUSCH).

As one embodiment, the first channel information is carried by NB-PUSCH (Narrow Band PUSCH).

As an embodiment, the first channel information is carried by an uplink physical layer control channel (i.e. an uplink channel that can only be used for carrying physical layer signaling).

As an embodiment, the first channel information is carried by a PUCCH (Physical Uplink control channel).

In one embodiment, the first channel information is carried by sPUCCH (short PUCCH).

As an embodiment, the first channel information is carried by NR-PUCCH (New Radio PUCCH ).

In one embodiment, the first channel information is carried by NB-PUCCH (Narrow Band PUCCH).

As one embodiment, the first channel quality indication is carried by physical layer signaling.

As an embodiment, the first channel quality indication is carried by UCI signaling.

As an embodiment, the first channel quality indication is a field in UCI signaling, the field comprising a positive integer number of bits.

For one embodiment, the first channel quality indication is carried by an uplink physical layer data channel.

As one embodiment, the first channel quality indication is carried by a PUSCH.

As an embodiment, said first channel quality indication is carried by a sPUSCH.

As one embodiment, the first channel quality indication is carried by an NR-PUSCH.

As one embodiment, the first channel quality indication is carried by an NB-PUSCH.

As an embodiment, the first channel quality indication is carried by an uplink physical layer control channel.

As one embodiment, the first channel quality indication is carried by a PUCCH.

For one embodiment, the first channel quality indication is carried by sPUCCH.

As one embodiment, the first channel quality indication is carried by NR-PUCCH.

In one embodiment, the first channel quality indication is carried by an NB-PUCCH.

As one embodiment, the second channel quality indication is carried by physical layer signaling.

As an embodiment, the second channel quality indication is carried by UCI signaling.

As an embodiment, the second channel quality indication is a field in UCI signaling, the field comprising a positive integer number of bits.

As an embodiment, the second channel quality indication is carried by an uplink physical layer data channel.

As one embodiment, the second channel quality indication is carried by a PUSCH.

As an embodiment, the second channel quality indication is carried by the sPUSCH.

As one embodiment, the second channel quality indication is carried by an NR-PUSCH.

As one embodiment, the second channel quality indication is carried by an NB-PUSCH.

As an embodiment, the second channel quality indication is carried by an uplink physical layer control channel.

As one embodiment, the second channel quality indication is carried by a PUCCH.

For one embodiment, the second channel quality indication is carried by sPUCCH.

As one embodiment, the second channel quality indication is carried by NR-PUCCH.

In one embodiment, the second channel quality indication is carried by an NB-PUCCH.

As an embodiment, the first channel information and the first channel quality indication are carried by the same physical layer signaling.

As an embodiment, the first channel information, the first channel quality indication and the second channel quality indication are carried by the same physical layer signaling.

As an embodiment, the first channel information and the first channel quality indication are carried by the same UCI signaling.

As an embodiment, the first channel information, the first channel quality indication, and the second channel quality indication are carried by the same UCI signaling.

As an embodiment, the first channel information and the first channel quality indicator are a first field and a second field in the same UCI signaling, respectively.

As an embodiment, the first channel information, the first channel quality indicator, and the second channel quality indicator are a first field, a second field, and a third field in the same UCI signaling, respectively.

In one embodiment, the first channel information and the first channel quality indicator are transmitted on the same uplink physical layer data channel resource.

As an embodiment, the first channel information, the first channel quality indicator, and the second channel quality indicator are transmitted on the same uplink physical layer data channel resource.

As one embodiment, the first channel information and the first channel quality indication are transmitted on the same PUSCH resource.

As one embodiment, the first channel information, the first channel quality indication and the second channel quality indication are transmitted on the same PUSCH resource.

As an embodiment, the first channel information and the first channel quality indication are transmitted on the same block of sPUSCH resources.

As an embodiment, the first channel information, the first channel quality indication and the second channel quality indication are transmitted on the same block of sPUSCH resources.

As an embodiment, the first channel information and the first channel quality indication are transmitted on the same NR-PUSCH resource.

As an embodiment, the first channel information, the first channel quality indication and the second channel quality indication are transmitted on the same NR-PUSCH resource.

As one embodiment, the first channel information and the first channel quality indication are transmitted on the same block of NB-PUSCH resources.

As one embodiment, the first channel information, the first channel quality indication, and the second channel quality indication are transmitted on a same block of NB-PUSCH resources.

As an embodiment, the first channel information and the first channel quality indicator are transmitted on the same uplink physical layer control channel resource.

As an embodiment, the first channel information, the first channel quality indicator, and the second channel quality indicator are transmitted on the same uplink physical layer control channel resource.

As one embodiment, the first channel information and the first channel quality indication are transmitted on the same block of PUCCH resources.

As an embodiment, the first channel information, the first channel quality indication and the second channel quality indication are transmitted on the same PUCCH resource.

For one embodiment, the first channel information and the first channel quality indicator are transmitted on the same chunk of sPUCCH resources.

As an embodiment, the first channel information, the first channel quality indication and the second channel quality indication are transmitted on the same chunk of sPUCCH resources.

As one embodiment, the first channel information and the first channel quality indication are transmitted on the same NR-PUCCH resource.

As one embodiment, the first channel information, the first channel quality indication and the second channel quality indication are transmitted on the same NR-PUCCH resource.

In one embodiment, the first channel information and the first channel quality indication are transmitted on the same NB-PUCCH resource.

In one embodiment, the first channel information, the first channel quality indication, and the second channel quality indication are transmitted on the same block of NB-PUCCH resources.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Fig. 2 illustrates a network architecture 200 of LTE (Long-Term Evolution), LTE-a (Long-Term Evolution Advanced), and future 5G systems. The LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200. The EPS 200 may include one or more UEs (User Equipment) 201, E-UTRAN-NR (Evolved UMTS terrestrial radio access network-new radio) 202, 5G-CN (5G-Core network, 5G Core network)/EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) 220, and internet service 230. The UMTS is compatible with Universal Mobile Telecommunications System (Universal Mobile Telecommunications System). The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown in fig. 2, the EPS provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services. The E-UTRAN-NR includes NR node B (gNB)203 and other gNBs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an X2 interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5G-CN/EPC210 through an S1 interface. The 5G-CN/EPC210 includes an MME211, other MMEs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet data Network Gateway) 213. The MME211 is a control node that handles signaling between the UE201 and the 5G-CN/EPC 210. In general, the MME211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP multimedia subsystem), and a PS streaming service (PSs).

As an embodiment, the UE201 corresponds to the user equipment in the present application.

As an embodiment, the gNB203 corresponds to the base station in this application.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of radio protocol architecture for the user plane and the control plane, as shown in fig. 3.

Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB through PHY 301. In the user plane, the L2 layer 305 includes a MAC (media access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several upper layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW213 on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.

As an example, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.

As an example, the radio protocol architecture in fig. 3 is applicable to the base station in this application.

As an embodiment, the first channel information in this application is generated in the PHY 301.

As an embodiment, the first channel quality indication in this application is generated in the PHY 301.

As an embodiment, the second channel quality indication in this application is generated in the PHY 301.

As an example, the first wireless signal in this application is generated in the PHY 301.

As an embodiment, the first indication information in the present application is generated in the PHY 301.

As an embodiment, the second indication information in this application is generated in the RRC sublayer 306.

As an embodiment, the second indication information in this application is generated in the MAC sublayer 302.

As an embodiment, the second indication information in the present application is generated in the PHY 301.

Example 4

Embodiment 4 illustrates a schematic diagram of an evolved node and a UE, as shown in fig. 4.

Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network. In the DL (Downlink), upper layer packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In the DL, the controller/processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the UE450 based on various priority metrics. Controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to UE 450. The transmit processor 416 implements various signal processing functions for the L1 layer (i.e., the physical layer). The signal processing functions include decoding and interleaving to facilitate Forward Error Correction (FEC) at the UE450 and mapping to signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols are then split into parallel streams. Each stream is then mapped to a multicarrier subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time-domain multicarrier symbol stream. The multi-carrier stream is spatially pre-decoded to produce a plurality of spatial streams. Each spatial stream is then provided via a transmitter 418 to a different antenna 420. Each transmitter 418 modulates an RF carrier with a respective spatial stream for transmission. At the UE450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto an RF carrier and provides the information to a receive processor 456. The receive processor 456 performs various signal processing functions at the L1 level. The receive processor 456 performs spatial processing on the information to recover any spatial streams destined for the UE 450. If multiple spatial streams are destined for UE450, they may be combined into a single multicarrier symbol stream by receive processor 456. A receive processor 456 then converts the multicarrier symbol stream from the time-domain to the frequency-domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate multicarrier symbol stream for each subcarrier of the multicarrier signal. The symbols on each subcarrier, as well as the reference signal, are recovered and demodulated by determining the most likely signal constellation point transmitted by the gNB410, and generating soft decisions. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the gNB410 on the physical channel. The data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the L2 layer. The controller/processor can be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing. The controller/processor 459 is also responsible for error detection using an Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocol to support HARQ operations. In the UL (Uplink), a data source 467 is used to provide the upper layer packet to the controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the functionality described in connection with the DL transmission of the gNB410, the controller/processor 459 implements the L2 layer for the user plane and the control plane by providing header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the gNB 410. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the gNB 410. An appropriate coding and modulation scheme is selected and spatial processing is facilitated by a transmit processor 468. The spatial streams generated by the transmit processor 468 are provided to different antennas 452 via separate transmitters 454. Each transmitter 454 modulates an RF carrier with a respective spatial stream for transmission. UL transmissions are processed at the gNB410 in a manner similar to that described in connection with receiver functionality at the UE 450. Each receiver 418 receives a signal through its respective antenna 420. Each receiver 418 recovers information modulated onto an RF carrier and provides the information to a receive processor 470. Receive processor 470 may implement the L1 layer. The controller/processor 475 implements the L2 layer. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the UL, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer packets from the controller/processor 475 may be provided to the core network. Controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocol to support HARQ operations.

As an embodiment, the UE450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor.

As an embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: the method includes the steps of sending the first channel information, the first channel quality indication and the second channel quality indication in the application, receiving the first wireless signal in the application, sending the first indication information in the application, and receiving the second indication information in the application.

As an embodiment, the gNB410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor.

As an embodiment, the gNB410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving the first channel information, the first channel quality indication and the second channel quality indication in the present application, sending the first wireless signal in the present application, receiving the first indication information in the present application, and sending the second indication information in the present application.

As an embodiment, the UE450 corresponds to the user equipment in the present application.

As an embodiment, the gNB410 corresponds to the base station in this application.

For one embodiment, the transmitter 454 (including antenna 452) may be configured to transmit the first channel information, the first channel quality indicator, and the second channel quality indicator in this application using at least two of the transmit processor 468 and the controller/processor 459, and the receiver 418 (including antenna 420) may be configured to receive the first channel information, the first channel quality indicator, and the second channel quality indicator in this application using at least two of the receive processor 470 and the controller/processor 475.

For one embodiment, at least two of the transmitter 418 (including antenna 420), the transmit processor 416 and the controller/processor 475 were used to transmit the first wireless signal in this application, and at least two of the receiver 454 (including antenna 452), the receive processor 456 and the controller/processor 459 were used to receive the first wireless signal in this application.

For one embodiment, the transmitter 454 (including antenna 452), at least two of the transmit processor 468 and the controller/processor 459 were used to transmit the first indication information in this application, and the receiver 418 (including antenna 420), at least two of the receive processor 470 and the controller/processor 475 were used to receive the first indication information in this application.

For one embodiment, at least two of the transmitter 418 (including antenna 420), the transmit processor 416 and the controller/processor 475 are used to transmit the second indication information in this application, and at least two of the receiver 454 (including antenna 452), the receive processor 456 and the controller/processor 459 are used to receive the second indication information in this application.

Example 5

Embodiment 5 illustrates a flow chart of wireless transmission, as shown in fig. 5. In fig. 5, base station N1 is the serving cell maintenance base station for user equipment U2. In fig. 5, block F1 and block F2 are optional.

For N1, sending second indication information in step S10; transmitting a first wireless signal in step S11; receiving the first channel information, the first channel quality indication and the second channel quality indication in step S12; the first indication information is received in step S13.

For U2, receiving second indication information in step S20; receiving a first wireless signal in step S21; transmitting the first channel information, the first channel quality indication and the second channel quality indication in step S22; the first indication information is transmitted in step S23.

In embodiment 5, the first channel information includes at least one of { a first rank indication, a first precoding matrix indication }; the first channel quality indication and the second channel quality indication respectively correspond to a first mapping table and a second mapping table; the first channel information is used to generate the first channel quality indication and the second channel quality indication; measurements for the first wireless signal are used to generate the first channel information, the first channel quality indication, and the second channel quality indication; the first indication information is used by the N1 to determine the K target precoding matrices from the K reference precoding matrices, respectively; the second indication information is used by the U2 to determine the K reference precoding matrices from the K precoding matrices, respectively.

As an embodiment, the first Rank indication is an RI (Rank indication).

As an embodiment, the first Precoding matrix indicator is a PMI (Precoding matrix indicator).

As an embodiment, the first Channel quality indicator is a CQI (Channel quality indicator).

As one embodiment, the second channel quality indication is a CQI.

As an embodiment, the first mapping table corresponds to an eMBB service.

As an embodiment, the second mapping table corresponds to URLLC traffic.

As one embodiment, the first channel quality indication is carried by a PUSCH.

As an embodiment, said first channel quality indication is carried by a sPUSCH.

As one embodiment, the first channel quality indication is carried by a PUCCH.

For one embodiment, the first channel quality indication is carried by sPUCCH.

As one embodiment, the first channel quality indication is carried by NR-PUCCH.

As one embodiment, the second channel quality indication is carried by a PUSCH.

As one embodiment, the second channel quality indication is carried by a PUCCH.

For one embodiment, the second channel quality indication is carried by sPUCCH.

As an embodiment, the first wireless Signal includes at least one of { CSI-RS (Channel-state information Reference Signal), CSI-IMR (Channel-state information interference measurement resource), PT-RS (Phase-Tracking Reference Signal), DM-RS (Demodulation Reference Signal), data }.

As an embodiment, the ue estimates a channel and interference based on the first radio signal to obtain an estimated channel and an estimated interference, and generates the first channel information, the first channel quality indicator, and the second channel quality indicator that are most suitable for the estimated channel and the estimated interference.

As an embodiment, the ue estimates a channel and interference based on the first radio signal to obtain an estimated channel and an estimated interference, and generates the first channel information, the first channel quality indicator, and the second channel quality indicator that are most suitable for the estimated channel and the estimated interference according to a generation criterion, where the generation criterion is at least one of { maximum transmission throughput, maximum SINR, minimum BLER }.

As an embodiment, the first indication information and the second channel quality indication are carried by the same physical layer signaling.

As an embodiment, the first channel information, the first channel quality indicator, the second channel quality indicator, and the first indication information are carried by the same physical layer signaling.

As an embodiment, the first indication information and the second channel quality indication are carried by the same UCI signaling.

As an embodiment, the first channel information, the first channel quality indicator, the second channel quality indicator, and the first indication information are carried by the same UCI signaling.

As an embodiment, the first indication information and the second channel quality indication are a first field and a second field in the same UCI signaling, respectively.

As an embodiment, the first channel information, the first channel quality indicator, the second channel quality indicator, and the first indicator information are a first field, a second field, a third field, and a fourth field in the same UCI signaling, respectively.

As an embodiment, the first indication information and the second channel quality indication are transmitted on the same uplink physical layer data channel resource.

As an embodiment, the first channel information, the first channel quality indicator, the second channel quality indicator and the first indication information are transmitted on the same uplink physical layer data channel resource.

As an embodiment, the first indication information and the second channel quality indication are transmitted on the same PUSCH resource.

As an embodiment, the first channel information, the first channel quality indication, the second channel quality indication and the first indication information are transmitted on the same block of PUSCH resources.

As an embodiment, the first indication information and the second channel quality indication are transmitted on the same block of sPUSCH resources.

As an embodiment, the first channel information, the first channel quality indication, the second channel quality indication and the first indication information are transmitted on the same block of sPUSCH resources.

As an embodiment, the first indication information and the second channel quality indication are transmitted on the same NR-PUSCH resource.

As an embodiment, the first channel information, the first channel quality indication, the second channel quality indication and the first indication information are transmitted on the same NR-PUSCH resource.

As one embodiment, the first indication information and the second channel quality indication are transmitted on the same block of NB-PUSCH resources.

As one embodiment, the first channel information, the first channel quality indication, the second channel quality indication, and the first indication information are transmitted on a same block of NB-PUSCH resources.

As an embodiment, the first indication information and the second channel quality indication are transmitted on the same uplink physical layer control channel resource.

As an embodiment, the first channel information, the first channel quality indicator, the second channel quality indicator, and the first indicator information are transmitted on the same uplink physical layer control channel resource.

As an embodiment, the first indication information and the second channel quality indication are transmitted on the same block of PUCCH resources.

As an embodiment, the first channel information, the first channel quality indication, the second channel quality indication and the first indication information are transmitted on the same PUCCH resource.

As an embodiment, the first indication information and the second channel quality indication are transmitted on the same chunk of sPUCCH resources.

As an embodiment, the first channel information, the first channel quality indicator, the second channel quality indicator and the first indication information are transmitted on the same chunk of sPUCCH resources.

As one embodiment, the first indication information and the second channel quality indication are transmitted on the same NR-PUCCH resource.

As an embodiment, the first channel information, the first channel quality indication, the second channel quality indication and the first indication information are transmitted on the same NR-PUCCH resource.

In one embodiment, the first indication information and the second channel quality indication are transmitted on the same NB-PUCCH resource.

As an embodiment, the first channel information, the first channel quality indication, the second channel quality indication and the first indication information are transmitted on a same NB-PUCCH resource.

As an embodiment, the second indication information is carried by higher layer signaling.

As an embodiment, the second indication information is carried by RRC signaling.

As an embodiment, the second indication information is all or a part of an IE in an RRC signaling.

As an embodiment, the second indication information is carried by a MAC (Medium Access Control) CE (Control Element) signaling.

As an embodiment, the second indication Information is transmitted in a SIB (System Information Block).

As an embodiment, the second indication information is carried by physical layer signaling.

As an embodiment, the second indication information is carried by DCI (Downlink control information) signaling.

As an embodiment, the second indication information is a Field (Field) in a DCI signaling, and the Field includes a positive integer number of bits.

As an embodiment, the second indication information is carried by a downlink physical layer control channel (i.e. a downlink channel that can only be used for carrying physical layer signaling).

As an embodiment, the second indication information is carried by a PDCCH (Physical Downlink control channel).

As an embodiment, the second indication information is carried by a short PDCCH (short PDCCH).

As an embodiment, the second indication information is carried by a NR-PDCCH (New Radio PDCCH).

As an embodiment, the second indication information is carried by NB-PDCCH (NarrowBand PDCCH).

As an embodiment, the second indication information is semi-statically configured.

As an embodiment, the second indication information is dynamically configured.

Example 6

Embodiment 6 illustrates a schematic diagram of the relationship between the first channel quality indicator and the first channel information, and the relationship between the second channel quality indicator and the first channel information.

In embodiment 6, the generation of the first channel quality indicator in the present application is based on an assumption that the first channel information is adopted, and the generation of the second channel quality indicator is based on an assumption that K target precoding matrices are adopted; the K target precoding matrices are related to the first precoding matrix indicator, the K being a positive integer.

As an embodiment, the generation of the first channel quality indication is based on the assumption that the first channel information is adopted means that the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and an estimated interference, and then assumes that a precoding matrix corresponding to the first channel information is adopted as a precoding matrix to select a first modulation and coding scheme that is most suitable for the estimated channel and the estimated interference and satisfies a target BLER not exceeding a first probability, where the first channel quality indication corresponds to the first modulation and coding scheme, and a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, and the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generating of the first channel quality indication is based on the assumption that the first channel information is adopted means that the ue assumes that a precoding matrix corresponding to the first channel information is adopted as a precoding matrix to select a first modulation and coding scheme that is most suitable for the estimated channel and the estimated interference and satisfies that a target BLER does not exceed a first probability, the first channel quality indication corresponds to the first modulation and coding scheme, a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, and the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the first channel quality indication is based on the assumption that the first channel information is adopted means that the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and an estimated interference, and then assumes that a precoding matrix corresponding to the first channel information is adopted as a precoding matrix to select a first modulation and coding scheme that has a highest transmission throughput corresponding to the estimated channel and the estimated interference and satisfies a target BLER not exceeding a first probability, where the first channel quality indication corresponds to the first modulation and coding scheme, a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, and the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generating of the first channel quality indication is based on an assumption that the first channel information is adopted, where the assumption that the user equipment adopts a precoding matrix corresponding to the first channel information as a precoding matrix to select a first modulation and coding scheme that has a highest transmission throughput corresponding to the estimated channel and the estimated interference and satisfies a target BLER not exceeding a first probability, the first channel quality indication corresponds to the first modulation and coding scheme, a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, and the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the first channel quality indication is based on the assumption that the first channel information is adopted means that the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and an estimated interference, and then assumes that a precoding matrix corresponding to the first channel information is adopted as a precoding matrix to select a first modulation and coding scheme that has a highest SINR corresponding to the estimated channel and the estimated interference and satisfies that a target BLER does not exceed a first probability, where the first channel quality indication corresponds to the first modulation and coding scheme, a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, and the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generating of the first channel quality indication is based on an assumption that the first channel information is adopted, where the assumption is that the user equipment adopts a precoding matrix corresponding to the first channel information as a precoding matrix to select a first modulation and coding scheme that has the highest SINR for the estimated channel and the estimated interference and satisfies a target BLER not exceeding a first probability, the first channel quality indication corresponds to the first modulation and coding scheme, a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, and the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the first channel quality indication is based on the assumption that the first channel information is adopted means that the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and an estimated interference, and then assumes that a precoding matrix corresponding to the first channel information is adopted as a precoding matrix to select a first modulation and coding scheme with a lowest target BLER corresponding to the estimated channel and the estimated interference and no more than a first probability, where the first channel quality indication corresponds to the first modulation and coding scheme, and a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, where the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generating of the first channel quality indication is based on an assumption that the first channel information is adopted, where the assumption that the user equipment adopts a precoding matrix corresponding to the first channel information as a precoding matrix to select a first modulation and coding scheme with a lowest target BLER and no more than a first probability, the first channel quality indication corresponds to the first modulation and coding scheme, a correspondence between the first channel quality indication and the first modulation and coding scheme is indicated by the first mapping table, and the first probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, that is, the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and estimated interference, and then assumes that the K target precoding matrices are adopted as precoding matrices on K frequency domain resources to select a second modulation and coding scheme that is most suitable for the estimated channel and the estimated interference and satisfies that a target BLER does not exceed a second probability, where the second channel quality indication corresponds to the second modulation and coding scheme, a corresponding relationship between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, and the second probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, that is, the ue assumes that the K target precoding matrices are adopted as precoding matrices on K frequency domain resources to select a second modulation and coding scheme that is most suitable for the estimated channel and the estimated interference and satisfies a target BLER not exceeding a second probability, the second channel quality indication corresponds to the second modulation and coding scheme, a correspondence between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, and the second probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, that is, the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and estimated interference, and then assumes that the K target precoding matrices are adopted as precoding matrices on K frequency domain resources to select a second modulation and coding scheme that has the highest transmission throughput corresponding to the estimated channel and the estimated interference and satisfies a target BLER not exceeding a second probability, where the second channel quality indication corresponds to the second modulation and coding scheme, a correspondence between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, and the second probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, that is, the user equipment adopts the K target precoding matrices as precoding matrices on K frequency domain resources to select a second modulation and coding scheme with the highest transmission throughput corresponding to the estimated channel and the estimated interference and meeting a target BLER not exceeding a second probability, the second channel quality indication corresponds to the second modulation and coding scheme, a correspondence between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, and the second probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, where the assumption is that the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and estimated interference, and then assumes that the K target precoding matrices are adopted as precoding matrices on K frequency domain resources to select a second modulation and coding scheme that has the highest SINR corresponding to the estimated channel and the estimated interference and satisfies that a target BLER does not exceed a second probability, where the second channel quality indication corresponds to the second modulation and coding scheme, and a correspondence between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, where the second probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, that is, the user equipment adopts the K target precoding matrices as precoding matrices on K frequency domain resources to select a second modulation and coding scheme which has the highest SINR corresponding to the estimated channel and the estimated interference and satisfies a second probability that a target BLER does not exceed a second probability, the second channel quality indication corresponds to the second modulation and coding scheme, a correspondence between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, and the second probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, that is, the ue estimates a channel and interference based on the received first radio signal to obtain an estimated channel and estimated interference, and then assumes that the K target precoding matrices are adopted as precoding matrices on K frequency domain resources to select a second modulation and coding scheme with a target BLER lowest and not exceeding a second probability corresponding to the estimated channel and the estimated interference, where the second channel quality indication corresponds to the second modulation and coding scheme, and a correspondence between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, where the second probability is a fraction greater than 0 and less than 1.

As an embodiment, the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted, that is, the user equipment adopts the K target precoding matrices as precoding matrices on K frequency domain resources to select a second modulation and coding scheme with a lowest target BLER and no more than a second probability, where the second channel quality indication corresponds to the second modulation and coding scheme, a correspondence between the second channel quality indication and the second modulation and coding scheme is indicated by the second mapping table, and the second probability is a fraction greater than 0 and less than 1.

As a sub-embodiment of the above embodiment, the first probability is 10%.

As a sub-embodiment of the above embodiment, the second probability is less than the first probability.

As a sub-embodiment of the above embodiment, the second probability is less than 10%.

As a sub-embodiment of the above embodiment, the second probability is at least one of { 1%, 0.1%, 0.001% }.

As an embodiment, the K target precoding matrices respectively correspond to K frequency domain resources, and the K frequency domain resources are orthogonal to each other.

As an embodiment, the K target precoding matrices respectively correspond to K subbands, and the K subbands occupy mutually orthogonal time-frequency resources.

Example 7

Embodiment 7 illustrates a schematic diagram of the relationship between one first precoding matrix and K target precoding matrices.

In embodiment 7, the first precoding matrix indication in this application is used to determine L reference column vectors, where L is a positive integer no greater than K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

As an embodiment, the first precoding matrix indication and the first rank indication are jointly used for determining L reference column vectors.

As an embodiment, the second channel quality indication is adapted for a transmit diversity transmission scheme.

As an embodiment, the second channel quality indication is generated based on an assumption of rank 1.

As one embodiment, the first precoding matrix indication comprises a wideband precoding matrix indication and a subband precoding matrix indication, the wideband precoding matrix indication being used to determine the L reference column vectors.

As one embodiment, the first precoding matrix indication comprises a wideband precoding matrix indication and a subband precoding matrix indication, the wideband precoding matrix indication and the first rank indication being used together for determining the L reference column vectors.

As a sub-implementation of the foregoing embodiment, the wideband precoding matrix indicator corresponds to L wideband beam vectors, and the L wideband beam vectors correspond to the L reference column vectors, respectively.

As a sub-embodiment of the above embodiment, the wideband precoding matrix indication corresponds to W₁A matrix, the sub-band precoding matrix indicating a corresponding matrix W₂A matrix, wherein the first precoding matrix indicates that the corresponding precoding matrix is W ═ W₁W₂(ii) a The W is₁The matrix is a block diagonal matrix, i.e. W₁1-diag (V, V), wherein said V consists of L column vectors; the L column vectors correspond to the L reference column vectors, respectively.

As an embodiment, the K is equal to the L, the K target precoding matrices respectively correspond to the L reference vectors, and any one of the K target precoding matrices is determined by a corresponding one of the L reference column vectors.

As an embodiment, the K target precoding matrices are composed of the L reference column vectors and { P₁An amplitude coefficient, P₂Phase coefficient, P, said P₁Is a positive integer, said P₂Is a positive integer.

As an embodiment, the K target precoding matrices are F respectively₁,F₂,…,F_KThe L reference column vectors are v₁,v₂,…,v_LA kth target precoding matrix of the K target precoding matrices satisfies

k＝(l-1)P₁P₂+(m-1)P₂+n；l＝1,2,…,L；0＜α_m＜1,m＝1,2,…,P₁Said P is₁Is a positive integer; theta_n∈[0,2π),n＝1,2,…,P₂Said P is₂Is a positive integer.

k＝(l-1)P₂+n；l＝1,2,…,L；θ_n∈[0,2π),n＝1,2,…,P₂Said P is₂Is a positive integer.

As an embodiment, the K target precoding matrices are F respectively₁,F₂,…,F_KThe L reference column vectors are v₁,v₂,…,v_LK is equal to L, and the K-th target precoding matrix of the K target precoding matrices satisfies F_k＝[v_kv_k]^H，k＝1,2,…,K。

Example 8

Embodiment 8 illustrates a schematic diagram of the relationship between another first precoding matrix and K target precoding matrices.

In embodiment 8, the first precoding matrix indicator in this application is used to determine K reference precoding matrices, where the number of column vectors of the K reference precoding matrices is M, and M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

As an embodiment, the M is not greater than the first rank indication corresponding rank.

As an embodiment, the K reference precoding matrices respectively correspond to K frequency domain resources, and the K frequency domain resources are orthogonal to each other.

As an embodiment, the K reference precoding matrices respectively correspond to K subbands, and the K subbands occupy mutually orthogonal time-frequency resources.

As an embodiment, the K reference precoding matrices and the K target precoding matrices respectively correspond to the same K frequency domain resources.

As an embodiment, the K reference precoding matrices and the K target precoding matrices respectively correspond to the same K subbands.

As an embodiment, the first precoding matrix indication and the first rank indication are jointly used for determining K reference precoding matrices.

As an embodiment, the second channel quality indication is adapted for a spatial multiplexing transmission scheme.

Example 9

Embodiment 9 illustrates a schematic diagram of the relationship between one K reference precoding matrices and K target precoding matrices.

In embodiment 9, any one of the K target precoding matrices in the present application is composed of N column vectors of one of the K reference precoding matrices, where N is a positive integer not greater than M.

As an embodiment, indexes of N column vectors of the K reference precoding matrices respectively corresponding to the K target precoding matrices are the same.

Example 10

Embodiment 10 illustrates a schematic diagram in which one first precoding matrix indicator is used to determine K reference precoding matrices.

In embodiment 10, the first precoding matrix indicator in this application corresponds to K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

As an embodiment, the K reference precoding matrices are respectively equal to K precoding matrices corresponding to the first precoding matrix indicator.

As an embodiment, any one of the K precoding matrices corresponding to the first precoding matrix indicator is a codeword in a codebook corresponding to the first precoding matrix indicator.

As an embodiment, any one of the K reference precoding matrices is composed of M column vectors of one of the K relevant precoding matrices.

As an embodiment, any one of the K reference precoding matrices is composed of M column vectors of one of the K correlated precoding matrices, and indexes of the M column vectors of the K precoding matrices respectively corresponding to the K reference precoding matrices are the same.

As an embodiment, any one of the K reference precoding matrices is composed of the first M column vectors of one of the K relevant precoding matrices.

Example 11

Embodiments 11A to 11C each illustrate a schematic diagram of first indication information.

In embodiment 11, the first indication information in this application is used to determine the K target precoding matrices from the K reference precoding matrices, respectively.

As an embodiment, the first indication information includes an RI, and a rank corresponding to the RI is equal to the N.

As an embodiment, the first indication information includes an RI, and the RI is related to the first rank indication.

As an embodiment, the first indication information includes an RI, and a rank corresponding to the RI is not greater than a rank corresponding to the first rank indication.

As an embodiment, the first indication information includes an RI, and a feedback overhead of the RI is related to a rank corresponding to the first rank indication.

As an embodiment, the first indication information includes an RI, and a feedback overhead of the RI is smaller than a feedback overhead of the first rank indication.

As an embodiment, the first indication information includes RI, and any one of the K target precoding matrices is composed of the first N column vectors of one of the K reference precoding matrices that are correlated.

As an embodiment, the first indication information includes at least M sub-indication information of { M sub-indication information, RI }, where the M sub-indication information respectively corresponds to M column vectors of any one of the K reference precoding matrices, and any one of the M sub-indication information is used by the N1 to determine whether the corresponding one of the M column vectors belongs to one of the K target precoding matrices.

As an embodiment, the first indication information includes at least M pieces of sub-indication information in { M pieces of sub-indication information, RI }, where the M pieces of sub-indication information are composed of M bits, and the number of bits with a value of 1 in the M bits is equal to the N.

As an embodiment, the first indication information includes at least M pieces of sub-indication information in { M pieces of sub-indication information, RI }, where the M pieces of sub-indication information are composed of M bits, and the number of bits with a value of 0 in the M bits is equal to the N.

As an embodiment, the embodiment 11A corresponds to that the first indication information includes a schematic diagram of the RI.

As an embodiment, the embodiment 11B corresponds to a schematic diagram that the first indication information includes the M pieces of sub-indication information.

As an embodiment, the embodiment 11C corresponds to a schematic diagram that the first indication information includes the RI and the M pieces of sub-indication information.

Example 12

Examples 12A to 12C each illustrate a schematic view of the second indication information.

In embodiment 12, the second indication information in this application is used to determine the K reference precoding matrices from the K precoding matrices, respectively.

As an embodiment, any one of the K reference precoding matrices is composed of M column vectors of Q column vectors included in one of the K relevant precoding matrices; the second indication information indicates that the M column vectors are selected from the Q column vectors.

As an embodiment, any one of the K reference precoding matrices is composed of first M column vectors of one of the K relevant precoding matrices, and the second indication information includes the M.

As an embodiment, any one of the K reference precoding matrices is composed of M column vectors of Q column vectors included in one of the K relevant precoding matrices; the second indication information indicates at least Q pieces of sub information in { Q pieces of sub information, the M } that respectively correspond to the Q column vectors, any one of the Q pieces of sub information being used by the U2 to determine whether the corresponding one of the Q column vectors belongs to the M column vectors.

As an embodiment, any one of the K reference precoding matrices is composed of M column vectors of Q column vectors included in one of the K relevant precoding matrices; the second indication information indicates that at least Q pieces of sub information in { Q pieces of sub information, and M } are included, the Q pieces of sub information are composed of Q bits, and the number of bits with a value of 1 in the Q bits is equal to M.

As an embodiment, any one of the K reference precoding matrices is composed of M column vectors of Q column vectors included in one of the K relevant precoding matrices; the second indication information indicates that at least Q pieces of sub information in { Q pieces of sub information, and M } are included, the Q pieces of sub information are composed of Q bits, and the number of bits with a value of 0 in the Q bits is equal to M.

As an embodiment, the embodiment 12A includes a schematic diagram of the M corresponding to the second indication information.

As an embodiment, the embodiment 12B is a schematic diagram that the first indication information includes the Q pieces of sub information.

As an embodiment, the embodiment 12C corresponds to a schematic diagram that the first indication information includes the M and the Q pieces of sub information.

Example 13

Embodiment 13 is a block diagram illustrating a processing apparatus used in a user equipment, as shown in fig. 13. In fig. 13, the processing means 1200 in the user equipment is mainly composed of a first receiver module 1201 and a first transmitter module 1202. The first receiver module 1201 includes at least two of the transmitter/receiver 454 (including the antenna 452), the receive processor 456, and the controller/processor 459 of fig. 4 of the present application. The first transmitter module 1202 includes at least two of the transmitter/receiver 454 (including the antenna 452), the transmit processor 468 and the controller/processor 459 of fig. 4 of the present application.

The first receiver module 1201: receiving second indication information; receiving a first wireless signal;

the first transmitter module 1202: sending first channel information, a first channel quality indication and a second channel quality indication; and sending the first indication information.

In embodiment 13, the first channel information includes at least one of { a first rank indication, a first precoding matrix indication }; the first channel quality indication and the second channel quality indication respectively correspond to a first mapping table and a second mapping table; the first channel information is used to generate the first channel quality indication and the second channel quality indication.

As one embodiment, measurements for the first wireless signal are used to generate the first channel information, the first channel quality indication, and the second channel quality indication.

As an embodiment, the first indication information is used to determine the K target precoding matrices from the K reference precoding matrices, respectively.

As an embodiment, the second indication information is used to determine the K reference precoding matrices from the K precoding matrices, respectively.

Example 14

Embodiment 14 is a block diagram illustrating a processing apparatus used in a base station device, as shown in fig. 14. In fig. 14, a processing means 1300 in a base station apparatus is mainly composed of a second transmitter module 1301 and a second receiver module 1302. The second transmitter module 1301 includes at least two of the transmitter/receiver 418 (including the antenna 420), the transmit processor 416 and the controller/processor 475 of fig. 4 of the present application. The second receiver module 1302 includes at least two of the transmitter/receiver 418 (including the antenna 420), the receive processor 470 and the controller/processor 475 of fig. 4 of the present application.

Second transmitter module 1301: sending second indication information; transmitting a first wireless signal;

the second receiver module 1302: receiving first channel information, a first channel quality indication and a second channel quality indication; first indication information is received.

In embodiment 14, the first channel information includes at least one of { a first rank indication, a first precoding matrix indication }; the first channel quality indication and the second channel quality indication respectively correspond to a first mapping table and a second mapping table; the first channel information is used to generate the first channel quality indication and the second channel quality indication.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE or the terminal in the present application includes, but is not limited to, a mobile phone, a tablet, a notebook, a network card, a low power consumption device, an eMTC device, an NB-IoT device, a vehicle-mounted communication device, and other wireless communication devices. The base station or the network side device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method in a user equipment for wireless communication, comprising:

wherein the first channel information comprises at least one of { a first rank indication, a first precoding matrix indication }; the first channel quality indication and the second channel quality indication respectively correspond to a first mapping table and a second mapping table; the first channel information is used to generate the first channel quality indication and the second channel quality indication; the generation of the first channel quality indication is based on an assumption that the first channel information is adopted, and the generation of the second channel quality indication is based on an assumption that K target precoding matrices are adopted; the K target precoding matrices are related to the first precoding matrix indicator, the K being a positive integer.

2. The method of claim 1, comprising:

-receiving a first wireless signal;

3. The method according to claim 1 or 2, wherein the first precoding matrix indication is used for determining L reference column vectors, said L being a positive integer not larger than said K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

4. The method according to claim 1 or 2, wherein the first precoding matrix indication is used for determining K reference precoding matrices, the number of column vectors of the K reference precoding matrices being M, wherein M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

5. The method according to claim 4, wherein any one of the K target precoding matrices is composed of N column vectors of the associated one of the K reference precoding matrices, where N is a positive integer not greater than M.

6. The method of claim 4, comprising:

-transmitting first indication information;

7. The method of claim 5, comprising:

-transmitting first indication information;

8. The method according to claim 4, wherein the first precoding matrix indicates that there are K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

9. The method of claim 8, comprising:

-receiving second indication information;

10. A method in a base station device for wireless communication, comprising:

11. The method of claim 10, comprising:

-transmitting a first wireless signal;

12. The method according to claim 10 or 11, wherein the first precoding matrix indication is used for determining L reference column vectors, wherein L is a positive integer not larger than K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

13. The method according to claim 10 or 11, wherein the first precoding matrix indication is used for determining K reference precoding matrices, the number of column vectors of the K reference precoding matrices being M, wherein M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

14. The method according to claim 13, wherein any one of the K target precoding matrices is composed of N column vectors of the associated one of the K reference precoding matrices, where N is a positive integer not greater than M.

15. The method of claim 13, comprising:

-receiving first indication information;

16. The method of claim 14, comprising:

-receiving first indication information;

17. The method according to claim 13, wherein the first precoding matrix indicates that there are K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

18. The method of claim 17, comprising:

-sending second indication information;

19. A user device for wireless communication, comprising:

20. The user equipment of claim 19, comprising:

-a first receiver module receiving a first wireless signal;

21. The user equipment according to claim 19 or 20, wherein the first precoding matrix indication is used for determining L reference column vectors, wherein L is a positive integer not larger than K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

22. The UE of claim 20, wherein the first precoding matrix indicator is used to determine K reference precoding matrices, the K reference precoding matrices are all M in number of column vectors, and M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

23. The UE of claim 22, wherein any one of the K target precoding matrices is composed of N column vectors of the associated one of the K reference precoding matrices, and wherein N is a positive integer not greater than M.

24. The UE of claim 22 or 23, wherein the first transmitter module further transmits first indication information; wherein the first indication information is used to determine the K target precoding matrices from the K reference precoding matrices, respectively.

25. The UE of claim 22, wherein the first precoding matrix indicator corresponds to K precoding matrices, and the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

26. The UE of claim 24, wherein the first precoding matrix indicator corresponds to K precoding matrices, and the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

27. The user equipment of claim 25, wherein the first receiver module further receives second indication information; wherein the second indication information is used to determine the K reference precoding matrices from the K precoding matrices, respectively.

28. A base station apparatus for wireless communication, comprising:

29. The base station apparatus of claim 28, comprising:

-a second transmitter module for transmitting a first wireless signal;

30. The base station device of claim 28 or 29, wherein the first precoding matrix indication is used to determine L reference column vectors, wherein L is a positive integer not greater than K; any one of the K target precoding matrices is associated with one of the L reference column vectors.

31. The base station device according to claim 29, wherein the first precoding matrix indicator is used to determine K reference precoding matrices, the number of column vectors of the K reference precoding matrices is M, and M is a positive integer; the K target precoding matrices are respectively related to the K reference precoding matrices.

32. The base station device according to claim 31, wherein any one of the K target precoding matrices is composed of N column vectors of the associated one of the K reference precoding matrices, where N is a positive integer not greater than M.

33. The base station device of claim 31 or 32, wherein the second receiver module further receives first indication information; wherein the first indication information is used to determine the K target precoding matrices from the K reference precoding matrices, respectively.

34. The base station device according to claim 31, wherein the first precoding matrix indication corresponds to K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

35. The base station device according to claim 33, wherein the first precoding matrix indication corresponds to K precoding matrices, the number of column vectors of the K precoding matrices is Q, and Q is a positive integer not less than M; the K reference precoding matrices are respectively related to the K precoding matrices.

36. The base station device of claim 34, wherein the second transmitter module further transmits second indication information; wherein the second indication information is used to determine the K reference precoding matrices from the K precoding matrices, respectively.