CN112468270B

CN112468270B - Information indication method and communication device

Info

Publication number: CN112468270B
Application number: CN201910841783.9A
Authority: CN
Inventors: 孙晓东; 塔玛拉卡·拉盖施
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2023-07-04
Anticipated expiration: 2039-09-06
Also published as: CN112468270A

Abstract

The invention provides an information indication method and communication equipment, wherein the information indication method comprises the following steps: the first equipment sends indication information to the second equipment; the indication information includes: a bit field indicating a transmission precoding matrix indicates a TPMI set for determining a codebook used for transmission by the second device; the length of the bit field is determined according to the number of codebooks supported by the second device. Compared with the prior art, the embodiment of the invention can reduce the signaling overhead for indicating the selected codebook.

Description

Information indication method and communication device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information indication method and a communication device.

Background

In the prior art, in order to enable the terminal device to transmit uplink at full power, the network device may select a codebook from the subsets of all-coherent, partially-coherent and incoherent codebooks for the terminal device, and inform the codebook to the terminal device through an indication signaling for uplink transmission of the terminal device. However, since the number of codebooks in the full, partial and incoherent codebook subsets is generally large, the signaling overhead is large when indicating the codebook selected from among them by the indication signaling.

Disclosure of Invention

The embodiment of the invention provides an information indication method and communication equipment, which are used for solving the problem that the signaling overhead is high in the existing method for indicating the codebook selected for terminal equipment.

In order to solve the technical problems, the embodiment of the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides an information indication method, which is applied to a first device, and includes:

transmitting indication information to the second device;

wherein, the indication information includes: a bit field indicating a TPMI set for determining a codebook used for transmission by the second device, the length of the bit field being determined according to the number of codebooks supported by the second device.

In a second aspect, an embodiment of the present invention provides an information indication method, which is applied to a second device, including:

receiving indication information from a first device;

In a third aspect, an embodiment of the present invention provides a communication device, where the communication device is a first device, including:

The first sending module is used for sending indication information to the second equipment;

In a fourth aspect, an embodiment of the present invention provides a communication device, where the communication device is a second device, including:

a fourth receiving module, configured to receive indication information from the first device;

In a fifth aspect, an embodiment of the present invention provides a communication device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the computer program when executed by the processor implements the steps of the information indication method applied to the first device or the second device.

In a sixth aspect, an embodiment of the present invention provides a computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the steps of the above-described information indicating method applied to a first device or a second device.

In the embodiment of the present invention, the first device may send, to the second device, indication information including a bit field indicating a TPMI set, where the TPMI set is used to determine a codebook used for transmission by the second device, and a length of the bit field is determined according to the number of codebooks supported by the second device. Therefore, compared with the prior art, the embodiment of the invention can reduce the signaling overhead for indicating the selected codebook.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a flow chart of an information indicating method according to an embodiment of the invention;

FIG. 2 is a flow chart of another information indicating method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

fig. 4 is a second schematic structural diagram of a communication device according to an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

Firstly, in the embodiment of the present invention, the first device and the second device may be terminal devices, for example, communication is performed between different vehicle devices in a scene of internet of vehicles; alternatively, the first device is a network device and the second device is a terminal device.

Optionally, the terminal Device may also be referred to as a terminal or a User Equipment (UE), and the terminal Device may be a terminal-side Device such as a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (wearyable Device), or a vehicle-mounted Device, which is not limited to a specific type of the terminal in the embodiment of the present invention. The network device may be a base station or a core network, where the base station may be a 5G or later version base station (e.g., a gNB, 5G NR NB, etc.), or a base station in other communication systems (e.g., an eNB, WLAN access point, or other access point, etc.), which may be referred to as a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, provided that the same technical effect is achieved, not limited to a particular technical vocabulary.

In the embodiment of the present invention, for a terminal device supporting incoherent and/or partially coherent transmission capability, in order to implement a full power transmission function, 3 kinds of transmission capability (for example, UE uplink transmission capability) may be indicated by reporting the capability of the terminal device:

transmission capability 1: each radio frequency branch supports full power transmission;

transmission capability 2: each radio frequency branch does not support full power transmission;

transmission capability 3: part of the radio frequency branches support full power transmission.

For transmission capabilities 2 and 3, the terminal device may support two full power modes of operation:

full power mode 1: the number of antenna ports of each SRS resource in the channel sounding reference signal (Sounding Reference Signal, SRS) resource set based on codebook transmission is the same, and full-power transmission can be realized by transmitting a precoding matrix indication (Transmitted Precoding Matrix Indicator, TPMI);

full power mode 2: the number of antenna ports of each SRS resource in the SRS resource set based on codebook transmission is different, and full-power transmission can be realized through SRS antenna port number indication.

Optionally, in the full power operation mode 2, the maximum number of antenna ports of SRS resources in the SRS resource set based on codebook transmission is 2 or 4, and the number of antenna ports of different SRS resource groups is different. For example, if the number of SRS resources is 2, the number of antenna ports of the first SRS resource may be 1, and the number of antenna ports of the second SRS resource may be 2; alternatively, if the number of SRS resources is 3, the number of antenna ports of the first SRS resource may be 1, the number of antenna ports of the second SRS resource may be 2, and the number of antenna ports of the third SRS resource may be 4.

The present invention will be described in detail with reference to examples and drawings.

Referring to fig. 1, fig. 1 is a flowchart of an information indication method according to an embodiment of the present invention, where the method is applied to a first device, and the first device may be a terminal device or a network device. As shown in fig. 1, the method comprises the steps of:

step 101: and sending indication information to the second device.

In this embodiment, the indication information may include: bit field indicating TPMI set. The set of TPMI is used to determine a codebook used for transmission by the second device. And the codebook used by the second device transmission may be one or more of the codebooks supported by the second device. One TPMI or a plurality of TPMI may be included in the TPMI set. After receiving the indication information, the second device may determine its codebook for data transmission according to TPMI included in the TPMI set.

In one embodiment, the indication information may indicate a TPMI set selected by the first device from the codebook subset for the second device. The codebook subset may be selected to include at least one of a full coherent codebook subset, a partial coherent codebook subset, and an incoherent codebook subset.

The length of the bit field included in the indication information may be determined by the first device according to the number of codebooks supported by the second device. The codebook supported by the second device can be configured by the first device or can be determined by the second device and then reported to the first device.

For example, if the number of codebooks supported by the second device is 4, the length of the corresponding bit field is 2; and the number of codebooks supported by the second device is 6, the length of the corresponding bit field may be 3.

In one embodiment, when the first device is a network device and the second device is a terminal device, the indication information may be sent through downlink control information (Downlink Control Information, DCI).

In one embodiment, the above indication information may be understood as precoding information and layer number field code points.

In the embodiment of the present invention, in the case that the codebook supported by the second device is configured by the first device, the first device may further send codebook subset restriction configuration information to the second device, so as to indicate the codebook supported by the second device configured for the second device. The codebook subset restriction configuration information may include a codebook restriction identifier, where the codebook restriction identifier indicates whether the second device supports a codebook corresponding to the codebook restriction identifier. The number of codebooks supported by the second device may be determined based on the codebook subset restriction configuration information, thereby determining the length of the bit field included in the corresponding indication information.

Alternatively, the codebook restriction flag may be 0 or 1. When the codebook restriction identifier is 1, it may indicate that the second device supports the codebook corresponding to the codebook restriction identifier, that is, the second device may use the codebook corresponding to the codebook restriction identifier to perform data transmission; or, in the case that the codebook restriction identifier is 0, it may indicate that the second device does not support the codebook corresponding to the codebook restriction identifier, that is, the second device cannot use the codebook corresponding to the codebook restriction identifier to perform data transmission.

In one embodiment, where the first device is a network device and the second device is a terminal device, the codebook subset restriction configuration information may be sent via a radio resource control (Radio Resource Control, RRC) message.

Optionally, in a case where the codebook supported by the second device is determined by the second device based on its own capability, before step 101 above, the method further includes: the first device receives first capability information from the second device. Wherein the first capability information indicates a subset of codebooks supported by the second device. The codebook subset may be selected as at least one of a partial coherent codebook subset and a non-coherent codebook subset, and may also be selected as a set of at least one codebook selected by the second device. The TPMI set indicated by the indication information may be selected by the first device from a subset of codebooks supported by the second device. The length of the bit field included in the indication information is determined according to the number of codebooks in the codebook subset supported by the second device.

For example, when the second device supports transmitting capability 3 and uses the full power operation mode 2, the capability reporting scheme of the second device at least includes the following three types:

scheme one: when the maximum antenna port number of SRS resources in the SRS resource set based on codebook transmission is 2, the second device only reports that the supported codebook subset is a non-coherent codebook subset. Or when the maximum antenna port number of SRS resources in the SRS resource set based on codebook transmission is 4, the codebook subset supported by the second device is a non-coherent codebook subset or a partial coherent codebook subset.

Scheme II: the second device reports that the supported codebook subset is a non-coherent codebook subset.

Scheme III: the second device reports that the supported codebook subset is a non-coherent codebook subset or a partially coherent codebook subset. Or when the codebook subset supported by the second device is a partial coherent codebook subset and the maximum antenna port number of SRS resources in the SRS resource set based on codebook transmission is 2, the second device essentially reports the incoherent codebook in the partial coherent codebook subset.

Optionally, before step 101, the method may further include:

the first device receives second capability information from the second device;

Wherein the second capability information indicates that the second device supports at least one of incoherent transmission and partially coherent transmission. In this way, if the first device selects TPMI from the codebook subset including the full-coherence codebook for the second device to transmit under the condition that the second device reports that incoherent transmission and/or partial-coherence transmission is supported, the second device can realize full-power transmission during incoherent or partial-coherence transmission.

Optionally, before step 101, the method may further include:

the first device receives third capability information from the second device.

Wherein the third capability information indicates any one of:

the second device supports transmit capability 2 and uses full power mode 1 of operation;

the second device supports transmit capability 3 and uses full power mode 1 of operation.

Thus, when the second device supports the transmission capability 2 or 3 and uses the full power operation mode 1, if the second device reports that the second device supports incoherent transmission and/or partially coherent transmission, the first device selects TPMI for the second device to transmit from a codebook subset including a full coherent codebook, so that the second device can realize full power transmission when the second device performs incoherent or partially coherent transmission.

In one embodiment, if the UE reports that incoherent (or partially coherent) transmission is supported, the network device may select one TPMI for the UE to transmit from a subset of the full, partial, and incoherent codebooks. Thus, by introducing the full-coherence codebook, the UE can transmit at full power in incoherent transmission. Further, if the TPMI is indicated by the bit field (the length of the bit field is determined according to the number of codebooks supported by the UE) included in the above indication information, signaling overhead for indicating the uplink codebook can be reduced compared with the prior art.

For example, in the case where the UE employs 2 antenna ports:

1) If the UE uses DFT-S-OFDM modulation, the network device can select the TPMI from indexes 0-5 of bit field mapping in the full-coherent, partial-coherent and incoherent codebook subsets;

2) If the UE uses CP-OFDM modulation and the maximum rank number is 1, the network device may select TPMI from index 0-5 of bit field mappings in the full, partial, and incoherent codebook subsets;

3) If the UE uses DFT-S-OFDM modulation and the maximum rank number is 2, the network device may select TPMI from indexes 0-8 of bit field mappings in the full, partial, and incoherent codebook subsets.

For another example, in the case where the UE employs 4 antenna ports:

1) If the UE uses DFT-S-OFDM modulation, the network device can select the TPMI from indexes 0-27 of bit field mapping in the full-coherent, partial-coherent and incoherent codebook subsets;

2) If the UE uses CP-OFDM modulation and the maximum rank number is 1, the network device may select TPMI from index 0-27 of bit field mappings in the full, partial, and incoherent codebook subsets;

3) If the UE uses DFT-S-OFDM modulation and the maximum rank number is one of 2, 3, and 4, the network device may select TPMI from indices 0-61 of bit field mappings in the full, partial, and incoherent codebook subsets.

Referring to fig. 2, fig. 2 is a flowchart of an information indication method according to an embodiment of the present invention, where the method is applied to a second device, and the second device may be a terminal device. As shown in fig. 2, the method comprises the steps of:

step 201: indication information is received from a first device.

In an embodiment of the present invention, the second device may receive indication information from the first device, where the indication information includes a bit field indicating a TPMI set, where the TPMI set is used to determine a codebook used for transmission by the second device, and a length of the bit field is determined according to a number of codebooks supported by the second device. Therefore, compared with the prior art, the embodiment of the invention can reduce the signaling overhead for indicating the selected codebook.

Optionally, in a case where the codebook supported by the second device is configured by the first device, the method further includes:

receiving codebook subset restriction configuration information from the first device;

the codebook subset restriction configuration information comprises a codebook restriction identifier, and the codebook restriction identifier indicates whether the second device supports a codebook corresponding to the codebook restriction identifier. The codebook restriction identification may be 0 or 1.

Optionally, in a case where the codebook supported by the second device is determined by the second device based on its own capability, before the step 201, the method further includes:

transmitting first capability information to the first device;

wherein the first capability information indicates a codebook subset supported by the second device, the TPMI set is selected by the first device from the codebook subset supported by the second device, and the length of the bit field is determined according to the number of codebooks in the codebook subset supported by the second device.

Optionally, the first capability information indicates that the codebook subset supported by the second device is a non-coherent codebook subset when any one of the following conditions is satisfied:

the second device supports transmit capability 3 and uses full power mode 2 of operation;

the second equipment supports the transmission capability 3, uses the full power working mode 2, and the maximum antenna port number of SRS resources in the SRS resource set based on codebook transmission is 2;

the second device supports transmission capability 3, uses full power operation mode 2, and the maximum antenna port number of SRS resources in the SRS resource set based on codebook transmission is 4.

Optionally, the first capability information indicates that the codebook subset supported by the second device is a partially coherent codebook subset when the following condition is satisfied:

Optionally, the method further comprises:

and determining a codebook supported by the current transmission of the second device according to the codebook subset restriction configuration information and the indication information.

Optionally, before the step 201, the method further includes:

transmitting second capability information to the first device;

wherein the second capability information indicates that the second device supports at least one of incoherent transmission and partially coherent transmission.

Optionally, before the step 201, the method further includes:

transmitting third capability information to the first device;

wherein the third capability information indicates any one of:

Next, the encoding process of the instruction information in the specific example of the present invention will be described.

Example 1

In example 1, a second device (e.g., UE) employs 2 antenna ports, uses DFT-S-OFDM modulation or uses CP-OFDM modulation, and has a maximum Rank of 1, and the precoding information and the number of layers in the corresponding codebook subset (codebook subset) are shown in table 1 below:

TABLE 1

In the prior art, feedback of TPMI in a subset of fully coherent, partially coherent and incoherent (fully And Partial And Non Coherent) codebooks requires 3-bit signaling overhead. If the UE reports the incoherent transmission, the network device configures, through the RRC message, that an index (Bit field mapped to index) of the bit field map corresponds to 1, that is, the codebook restriction identifier corresponding to the index 0-2 of the bit field map in the codebook subset restriction configuration information included in the RRC message is 1, and that indexes of other bit field maps correspond to 0, as shown in table 2 below:

TABLE 2

In the case where the codebook restriction identifier 1 indicates that the UE supports the corresponding codebook, the codebook restriction identifier 11100000 in the codebook subset restriction configuration information (CodebookSubset Restriction) configured by RRC may be bit-encoded, for example, the precoding information and the layer number information corresponding to the 1 st '1' are mapped to the precoding information and the layer number field code point (Precoding information and number of layers Filed codepoint), i.e., the indication information 00, may be simply referred to as mapping the 1 st '1' to 00, the 2 nd '1' to 01, and the 1 st '3' to 10, and the bit field 11 is reserved as shown in the following table 3:

TABLE 3 Table 3

The precoding information and the layer number field code point may be transmitted to the UE through DCI.

Thus, the bit field size indicating the precoding information and the layer number information in example 1 is 2 bits, and compared with 3 bits in the prior art, the signaling overhead of the control channel with 1 bit can be saved.

Example 2

In example 2, a second device (e.g., UE) employs 4 antenna ports, uses DFT-S-OFDM modulation or uses CP-OFDM modulation, and has a maximum rank of 1, and precoding information and the number of layers in the corresponding codebook subset are shown in table 4 below:

TABLE 4 Table 4

In the prior art, feedback of TPMI in all, partially and incoherent codebook subsets requires 5-bit signaling overhead. If the UE reports the incoherent transmission, the network device configures, through the RRC message, that indexes 0 to 3 and 13 of the bit field map correspond to 1, that is, codebook restriction identifiers corresponding to indexes 0 to 3 and 13 of the bit field map in codebook subset restriction configuration information included in the RRC message are 1, and indexes of other bit field maps correspond to 0, as shown in table 5 below:

TABLE 5

In the case where the codebook restriction flag 1 indicates that the UE supports the corresponding codebook, the codebook restriction flag 11110000000001000000000000000000 in the codebook subset restriction configuration information of the RRC configuration may be bit-encoded, for example, the precoding information and the layer number information corresponding to the 1 st '1' may be mapped to the precoding information and the layer number field code point 000, which may be simply referred to as mapping the 1 st '1' to 000, mapping the 2 nd '1' to 001, mapping the 3 rd '1' to 010, mapping the 4 th '1' to 011, and mapping the 5 th '1' to 100, and other bit field reservation functions, as shown in table 6 below:

TABLE 6

Thus, the bit field size indicating the precoding information and the layer number information in example 2 is 3 bits, and compared with 5 bits in the prior art, the signaling overhead of the 2-bit control channel can be saved.

Example 3

In example 3, a second device (e.g., UE) employs 4 antenna ports, uses DFT-S-OFDM modulation or uses CP-OFDM modulation, and has a maximum rank of 1, and precoding information and the number of layers in the corresponding codebook subset are shown in table 7 below:

TABLE 7

In the prior art, feedback of TPMI in all, partially and incoherent codebook subsets requires 5-bit signaling overhead. If the UE reports the incoherent transmission, the network device configures, through the RRC message, 1 corresponding to index 0-4 of the bit field map, that is, the codebook restriction identifier corresponding to index 0-4 of the bit field map in the codebook subset restriction configuration information included in the RRC message is 1, and indexes of other bit field maps are 0 corresponding to index 0, as shown in table 8 below:

TABLE 8

In the case where the codebook restriction flag 1 indicates that the UE supports the corresponding codebook, the codebook restriction flag 11111000000000000000000000000000 in the codebook subset restriction configuration information of the RRC configuration may be bit-encoded, for example, the precoding information and the layer number information corresponding to the 1 st '1' may be mapped to the precoding information and the layer number field code point 000, which may be simply referred to as mapping the 1 st '1' to 000, mapping the 2 nd '1' to 001, mapping the 3 rd '1' to 010, mapping the 4 th '1' to 011, and mapping the 5 th '1' to 100, and other bit field reservation functions, as shown in the following table 9:

TABLE 9

Thus, the bit field size indicating the precoding information and the layer number information in example 3 is 3 bits, and compared with 5 bits in the prior art, the 2-bit control channel signaling overhead can be saved.

Example 4

In example 4, a second device (e.g., UE) employs 4 antenna ports, uses DFT-S-OFDM modulation, and has a maximum rank number of one of 2, 3, and 4, and the precoding information and the number of layers in the corresponding codebook subset are shown in table 10 below:

table 10

In the prior art, the feedback of TPMI in all, partially and incoherent codebook subsets requires 6-bit signaling overhead. If the UE reports the incoherent transmission, the network device configures, through the RRC message, indexes 0 to 11, 32, 48 and 56 of the bit field map to correspond to 1, that is, codebook restriction identifications corresponding to indexes 0 to 11, 32, 48 and 56 of the bit field map in the codebook subset restriction configuration information included in the RRC message are 1, and indexes of other bit field maps correspond to 0, as shown in table 11 below:

TABLE 11

In the case where codebook restriction identification 1 indicates that the UE supports the corresponding codebook, codebook restriction identification 11111111 11110000 00000000 00000000 10000000 00000000 10000000 10000000 (shown in table 11) in the codebook subset restriction configuration information of the RRC configuration may be bit encoded, such as mapping 1' to 0000, mapping 2 '1' to 0001, mapping 3 '1' to 0010, mapping 4 '1' to 0011, mapping 5 '1' to 0100, mapping 6 '1' to 0101, mapping 7 '1' to 0110, mapping 8 '1' to 0111, mapping 9 '1' to 1000, mapping 10 '1' to 1001, mapping 11 '1' to 1010, mapping 12 '1' to 1011, mapping 13 '1' to 1100, mapping 14 '1' to 1101, and mapping 15 '1' to 1110, the bit field 1111 retaining functions as shown in table 12 below:

Table 12

Thus, the bit field in example 4 indicating the precoding information and the layer number information has a size of 4 bits, and compared with 6 bits in the prior art, the signaling overhead of the 2-bit control channel can be saved.

Example 5

In example 5, a second device (e.g., UE) employs 4 antenna ports, uses DFT-S-OFDM modulation, and has a maximum rank number of one of 2, 3, and 4, and the precoding information and the number of layers in the corresponding codebook subset are shown in table 13 below:

TABLE 13

In the prior art, the feedback of TPMI in all, partially and incoherent codebook subsets requires 6-bit signaling overhead. If the UE reports the incoherent transmission, the network device configures, through the RRC message, that indexes 0 to 12, 20 and 28 of the bit field map correspond to 1, that is, the codebook restriction identifier corresponding to indexes 0 to 12, 20 and 28 of the bit field map in the codebook subset restriction configuration information included in the RRC message is 1, and indexes of other bit field maps correspond to 0, as shown in table 14 below:

TABLE 14

In the case where codebook restriction identification 1 indicates that the UE supports the corresponding codebook, codebook restriction identification 11111111 11111000 00001000 00001000 00000000 00000000 00000000 00000000 (shown in table 14) in the codebook subset restriction configuration information of the RRC configuration may be bit encoded, such as mapping 1' to 0000), mapping 2 '1' to 0001, mapping 3 '1' to 0010, mapping 4 '1' to 0011, mapping 5 '1' to 0100, mapping 6 '1' to 0101, mapping 7 '1' to 0110, mapping 8 '1' to 0111, mapping 9 '1' to 1000, mapping 10 '1' to 1001, mapping 11 '1' to 1010, mapping 12 '1' to 1011, mapping 13 '1' to 1100, mapping 14 '1' to 1101, and mapping 15 '1' to 1110, the bit field 1111 retaining function as shown in table 15 below:

TABLE 15

Thus, the bit field size indicating the precoding information and the layer number information in example 5 is 4 bits, and compared with 6 bits in the prior art, the signaling overhead of the 2-bit control channel can be saved.

The above embodiment has described the information indicating method of the present invention, and the first device and the second device of the present invention will be described below with reference to the embodiment and the drawings.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention, where the communication device is a first device, and the first device may be a network device or a terminal device. As shown in fig. 3, the communication device 30 includes:

a first transmitting module 31, configured to transmit indication information to the second device;

Optionally, the first device 30 may further include:

a second sending module, configured to send codebook subset restriction configuration information to the second device;

the codebook subset restriction configuration information comprises a codebook restriction identifier, and the codebook restriction identifier indicates whether the second device supports a codebook corresponding to the codebook restriction identifier.

Optionally, the first device 30 may further include:

a first receiving module for receiving first capability information from the second device;

Optionally, the first device 30 may further include:

a second receiving module for receiving second capability information from the second device;

Optionally, if the codebook restriction identifier is 1, the second device supports a codebook corresponding to the codebook restriction identifier;

Or if the codebook restriction identifier is 0, the second device does not support the codebook corresponding to the codebook restriction identifier.

Optionally, the first device 30 may further include:

a third receiving module for receiving third capability information from the second device;

wherein the third capability information indicates any one of:

Referring to fig. 4, fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present invention, where the communication device may be a second device, and the second device may be a terminal device. As shown in fig. 4, the communication device 40 includes:

a fourth receiving module 41, configured to receive indication information from the first device;

Optionally, the second device 40 may further include:

a fifth receiving module configured to receive codebook subset restriction configuration information from the first device;

Optionally, the second device 40 may further include:

a third sending module, configured to send first capability information to the first device;

Optionally, the second device 40 may further include:

and the determining module is used for determining a codebook supported by the current transmission of the second equipment according to the codebook subset restriction configuration information and the indication information.

Optionally, the second device 40 may further include:

a fourth sending module, configured to send second capability information to the first device;

Optionally, the second device 40 may further include:

a fifth sending module, configured to send third capability information to the first device;

wherein the third capability information indicates any one of:

The embodiment of the invention also provides a communication device, which comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program realizes each process of the information indication method embodiment shown in fig. 1 or each process of the information indication method embodiment shown in fig. 2 when being executed by the processor, and can achieve the same technical effect, and the repetition is avoided, and the description is omitted here. The communication device may be selected as a terminal device or a network device.

Referring to fig. 5, fig. 5 is a schematic hardware structure of a terminal device implementing various embodiments of the present invention, and a terminal device 500 includes, but is not limited to: radio frequency unit 501, network module 502, audio output unit 503, input unit 504, sensor 505, display unit 506, user input unit 507, interface unit 508, memory 509, processor 510, and power source 511. It will be appreciated by those skilled in the art that the structure shown in fig. 5 does not constitute a limitation of the terminal device, and the terminal device may include more or less components than illustrated, or may combine certain components, or may have a different arrangement of components. In an embodiment of the present invention, the terminal device 500 includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

Optionally, the radio frequency unit 501 is configured to send indication information to a target terminal device; the indication information includes: and a bit field indicating a TPMI set, where the TPMI set is used to determine a codebook used for transmission by the target terminal device, and a length of the bit field is determined according to the number of codebooks supported by the target terminal device.

The terminal device 500 of the embodiment of the present invention may implement each process implemented in the embodiment of the method shown in fig. 1 and achieve the same beneficial effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, the radio frequency unit 501 is configured to receive indication information from a network device; the indication information includes: a bit field indicating a TPMI set for determining a codebook used for transmission by the terminal device 500, the length of the bit field being determined according to the number of codebooks supported by the terminal device 500.

The terminal device 500 of the embodiment of the present invention may implement each process implemented in the embodiment of the method shown in fig. 2 and achieve the same beneficial effects, and in order to avoid repetition, a detailed description is omitted here.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 501 may be used to receive and send information or signals during a call, specifically, receive downlink data from a base station, and then process the downlink data with the processor 510; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 501 may also communicate with networks and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 502, such as helping the user to send and receive e-mail, browse web pages, access streaming media, etc.

The audio output unit 503 may convert audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into an audio signal and output as sound. Also, the audio output unit 503 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal device 500. The audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.

The input unit 504 is used for receiving an audio or video signal. The input unit 504 may include a graphics processor (Graphics Processing Unit, GPU) 5041 and a microphone 5042, the graphics processor 5041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 506. The image frames processed by the graphics processor 5041 may be stored in the memory 509 (or other storage medium) or transmitted via the radio frequency unit 501 or the network module 502. Microphone 5042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 501 in case of a phone call mode.

The terminal device 500 further comprises at least one sensor 505, such as a light sensor, a motion sensor and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 5061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 5061 and/or backlight when the terminal device 500 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when the accelerometer sensor is stationary, and can be used for recognizing the terminal gesture (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; the sensor 505 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein.

The display unit 506 is used to display information input by a user or information provided to the user. The display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 507 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 507 includes a touch panel 5071 and other input devices 5072. Touch panel 5071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on touch panel 5071 or thereabout using any suitable object or accessory such as a finger, stylus, etc.). Touch panel 5071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 510, and receives and executes commands sent by the processor 510. In addition, the touch panel 5071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 5071, the user input unit 507 may include other input devices 5072. In particular, other input devices 5072 may include, but are not limited to, physical keyboards, function keys (e.g., volume control keys, switch keys, etc.), trackballs, mice, joysticks, and so forth, which are not described in detail herein.

Further, the touch panel 5071 may be overlaid on the display panel 5061, and when the touch panel 5071 detects a touch operation thereon or thereabout, the touch operation is transmitted to the processor 510 to determine a type of touch event, and then the processor 510 provides a corresponding visual output on the display panel 5061 according to the type of touch event. Although in fig. 5, the touch panel 5071 and the display panel 5061 are provided as two separate components to implement the input and output functions of the terminal, in some embodiments, the touch panel 5071 may be integrated with the display panel 5061 to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 508 is an interface for connecting an external device to the terminal apparatus 500. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 508 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 500 or may be used to transmit data between the terminal apparatus 500 and an external device.

The memory 509 may be used to store software programs as well as various data. The memory 509 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory 509 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 510 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or executing software programs and/or modules stored in the memory 509 and calling data stored in the memory 509, thereby performing overall monitoring of the terminal. Processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 510.

The terminal device 500 may further include a power source 511 (e.g., a battery) for powering the various components, and preferably the power source 511 may be logically coupled to the processor 510 via a power management system that performs functions such as managing charging, discharging, and power consumption.

In addition, the terminal device 500 may further include some functional modules, which are not shown, and are not described herein.

Referring to fig. 6, fig. 6 is a schematic hardware structure of a network device implementing various embodiments of the present invention, where the network device 60 includes, but is not limited to: bus 61, transceiver 62, antenna 63, bus interface 64, processor 65, and memory 66.

In an embodiment of the present invention, the network device 60 further includes: a computer program stored on the memory 66 and executable on the processor 65.

Optionally, the computer program when executed by the processor 65 implements the steps of:

sending indication information to terminal equipment;

wherein, the indication information includes: and a bit field indicating a TPMI set, where the TPMI set is used to determine a codebook used for transmission by the terminal device, and a length of the bit field is determined according to the number of codebooks supported by the terminal device.

A transceiver 62 for receiving and transmitting data under the control of a processor 65.

The network device 60 according to the embodiment of the present invention may implement each process implemented in the embodiment of the method shown in fig. 1 and achieve the same beneficial effects, and in order to avoid repetition, a detailed description is omitted here.

In fig. 6, a bus architecture (represented by bus 61), the bus 61 may comprise any number of interconnected buses and bridges, with the bus 61 linking together various circuits, including one or more processors, represented by processor 65, and memory, represented by memory 66. The bus 61 may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. Bus interface 64 provides an interface between bus 61 and transceiver 62. The transceiver 62 may be one element or may be a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 65 is transmitted over a wireless medium via the antenna 63, and further, the antenna 63 receives data and transmits the data to the processor 65.

The processor 65 is responsible for managing the bus 61 and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 66 may be used to store data used by processor 65 in performing operations.

Alternatively, the processor 65 may be CPU, ASIC, FPGA or a CPLD.

The embodiment of the present invention further provides a computer readable storage medium, where a computer program is stored, where the computer program when executed by a processor may implement each process of the embodiment of the information indication method shown in fig. 1 or implement each process of the embodiment of the information indication method shown in fig. 2, and achieve the same technical effects, and in order to avoid repetition, a description is omitted herein. The computer readable storage medium is, for example, read-Only Memory (ROM), random access Memory (Random Access Memory RAM), magnetic disk or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. An information indicating method applied to a first device, comprising:

transmitting indication information to the second device;

wherein, the indication information includes: a bit field indicating a transmission precoding matrix indicating a TPMI set for determining a codebook used for full power transmission, the length of the bit field being determined according to the number of codebooks supported by the second device;

wherein, before the indication information is sent to the second device, the method further comprises:

receiving first capability information from the second device;

2. The method according to claim 1, wherein the method further comprises:

transmitting codebook subset restriction configuration information to the second device;

3. The method according to claim 2, wherein the codebook restriction identifier indicates that the second device supports a codebook corresponding to the codebook restriction identifier if the codebook restriction identifier is 1;

or alternatively, the process may be performed,

and under the condition that the codebook restriction identifier is 0, the second device does not support the codebook corresponding to the codebook restriction identifier.

4. The method of claim 1, wherein prior to the sending the indication information to the second device, the method further comprises:

receiving second capability information from the second device;

5. The method of claim 1, wherein prior to the sending the indication information to the second device, the method further comprises:

receiving third capability information from the second device;

wherein the third capability information indicates any one of:

the second device supports transmit capability 3 and uses full power mode 1 of operation;

wherein, the transmitting capability 2 does not support full power transmission for each radio frequency branch; the transmitting capability 3 supports full-power transmission for part of radio frequency branches; and the full power working mode 1 is that the number of antenna ports of each SRS resource in the SRS resource set of the channel sounding reference signal based on codebook transmission is the same.

6. An information indicating method applied to a second device, comprising:

receiving indication information from a first device;

wherein, the indication information includes: a bit field indicating a TPMI set for determining a codebook used for full power transmission, the length of the bit field being determined according to the number of codebooks supported by the second device;

wherein prior to the receiving the indication information from the first device, the method further comprises:

transmitting first capability information to the first device;

7. The method of claim 6, wherein the method further comprises:

8. The method of claim 6, wherein the step of providing the first layer comprises,

the first capability information indicates that the subset of codebooks supported by the second device is a subset of non-coherent codebooks when any one of the following conditions is satisfied:

the second equipment supports the transmission capability 3, uses the full power working mode 2, and the maximum antenna port number of SRS resources in the SRS resource set based on codebook transmission is 4;

wherein, the transmitting capability 3 supports full power transmission for part of radio frequency branches; and the full power working mode 2 is that the number of antenna ports of SRS resources in an SRS resource set based on codebook transmission is different.

9. The method of claim 6, wherein the step of providing the first layer comprises,

the first capability information indicates that the subset of codebooks supported by the second device is a subset of partially coherent codebooks when the following condition is satisfied:

10. The method of claim 7, wherein the method further comprises:

11. The method of claim 6, wherein prior to receiving the indication information from the first device, the method further comprises:

transmitting second capability information to the first device;

12. The method of claim 6, wherein prior to receiving the indication information from the first device, the method further comprises:

transmitting third capability information to the first device;

wherein the third capability information indicates any one of:

Wherein, the transmitting capability 2 does not support full power transmission for each radio frequency branch; the transmitting capability 3 supports full-power transmission for part of radio frequency branches; and the full power working mode 1 is that the number of antenna ports of each SRS resource in the SRS resource set based on codebook transmission is the same.

13. A communication device, the communication device being a first device, comprising:

wherein the first device further comprises:

14. A communication device, the communication device being a second device, comprising:

wherein the second device may further comprise:

15. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program when executed by the processor implements the steps of the information indication method of any one of claims 1 to 5 or the steps of the information indication method of any one of claims 6 to 12.

16. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the information indication method according to any one of claims 1 to 5 or the steps of the information indication method according to any one of claims 6 to 12.