CN110034894B

CN110034894B - Control signaling and data transmission method and device

Info

Publication number: CN110034894B
Application number: CN201810032652.1A
Authority: CN
Inventors: 白伟; 托尼; 缪德山
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2022-05-27
Anticipated expiration: 2038-01-12
Also published as: CN110034894A

Abstract

The invention provides a method and a device for transmitting control signaling and data, wherein the method comprises the following steps: a base station generates a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information; and sending the PDCCH carrying the control signaling to the terminal. By enabling the control signaling in the PDCCH format 0_0 format to include the indication field for indicating the DMRS configuration information of the demodulation reference signal, the control signaling in the PDCCH format 0_0 format can be used to schedule uplink transmission, which can effectively reduce the consumption of PDCCH payload bits, and when the uplink supports multiple terminals to share resources, can effectively reduce the resource overhead.

Description

Control signaling and data transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting control signaling and data.

Background

With the development of mobile communication service requirements, many organizations such as the third Generation partnership project 3GPP are beginning to research a new wireless communication system, i.e. 5Generation new rat, fifth Generation wireless communication technology, for future mobile communication systems. In the 5G NR, there are two formats for a control signaling carried by a physical downlink control channel PDCCH for scheduling a physical uplink shared channel PUSCH, namely, a physical downlink control channel PDCCH format 0_0 format and a physical downlink control channel PDCCH format 0_1 format. However, the control signaling in the PDCCH format 0_1 includes an antipna port field for indicating DMRS configuration for demodulation reference signals, but the control signaling in the PDCCH format 0_0 does not include the antipna port field, so the control signaling in the PDCCH format 0_0 cannot indicate DMRS configuration.

In the scenario of ultra-high-availability ultra-low-delay communication URLLC of 5G NR, in order to schedule uplink transmission of a plurality of 5G NRURLLC, if control signaling of PDCCH format 0_1 is adopted, the need of control signaling is minimum

Bits, if the control signaling in the PDCCH format 0_0 format is adopted, corresponding to the situation that the control signaling in the PDCCH format 0_1 format occupies the least bits, the minimum requirement will be met

Bits, it can be seen that the control signaling of the PDCCHformat 0_0 format will be less consumed than the control signaling of the PDCCH format 0_1 format in terms of transmission efficiency

PDCCH payload bits, which would have a very significant impact on physical layer PHY transmissions. Wherein Nsrs refers to the number of physical resource blocks of the SRS resource of the channel sounding reference signal that needs to be occupied, and N _ UL, BWP _ RB refer to the number of PRBs contained in the BWP resource of the current uplink frequency domain bandwidth part.

Since in the 5G NR URLLC scenario, the uplink supports multiple terminals to share resources, DMRS configuration needs to be indicated, and control signaling in PDCCH format 0_1 format can obviously be used for the uplink of the 5G NR URLLC, but the resource overhead is large. Therefore, in order to reduce overhead, it is desirable to schedule uplink transmission of the 5G NR URLLC using control signaling in the PDCCH format 0_0 format. It would be meaningful to modify the control signaling in PDCCH format 0_0 format for uplink transmission of 5G NR URLLC.

Disclosure of Invention

The embodiment of the invention discloses a method and a device for transmitting control signaling and data, which are used for solving the problem of high resource overhead when uplink transmission is scheduled for the control signaling adopting a PDCCH format 0_1 format in the prior art.

In order to achieve the above object, according to an aspect of the embodiments of the present invention, a method for transmitting control signaling is disclosed, the method including:

a base station generates a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information;

and sending the PDCCH for bearing the control signaling to a terminal.

Specifically, the indication field for indicating the DMRS configuration information of the demodulation reference signal is a field obtained by adding a new bit in the control signaling or a field obtained by modifying an existing bit in the control signaling.

Specifically, when the control signaling is used as an activation signaling for the second type of scheduling-free uplink transmission, the indication field for indicating the demodulation reference signal DMRS configuration information is a field obtained by modifying an existing bit in the control signaling.

Specifically, the existing bits in the control signaling include: part or all of the bits in the modulation and coding strategy MCS field, or/and part or all of the bits in the transmit power control Command TPC Command field, or/and part or all of the bits in the hybrid automatic repeat request number HARQ processumber field, or/and part or all of the bits in the Redundancy version Redundancy field, or/and part or all of the bits in other fields.

Specifically, the length of the indication field for indicating the DMRS configuration information is set to X bits, where X is a preset value.

Specifically, the antenna port number indicated by the indication field for indicating the DMRS configuration information is a subset or a full set of the antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_ 1.

According to another aspect of the embodiments of the present invention, there is also provided a data transmission method, including:

a terminal receives a PDCCH (physical downlink control channel) which is sent by a base station and carries a control signaling in a PDCCH format 0_0, wherein the control signaling in the PDCCH format 0_0 comprises an indication field for indicating demodulation reference signal (DMRS) configuration information;

Descrambling the PDCCH to acquire an indication field which is included in the control signaling and is used for indicating DMRS configuration information;

and according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, determining an antenna port corresponding to the antenna port number, and transmitting data to a base station through the antenna port.

According to another aspect of the embodiments of the present invention, there is also provided a transmission apparatus of control signaling, the apparatus including:

a generating module, configured to generate a control signaling in a physical downlink control channel PDCCH format 0_0 format by a base station, where the control signaling in the PDCCH format 0_0 format includes an indication field for indicating demodulation reference signal DMRS configuration information;

and the first sending module is used for sending the PDCCH bearing the control signaling to the terminal.

According to another aspect of the embodiments of the present invention, there is also provided a data transmission apparatus, including:

a receiving module, configured to receive, by a terminal, a PDCCH carrying a control signaling in a physical downlink control channel PDCCH format 0_0 format, where the control signaling in the PDCCH format 0_0 format includes an indication field for indicating demodulation reference signal DMRS configuration information;

An obtaining module, configured to descramble the PDCCH and obtain an indication field included in the control signaling and used for indicating DMRS configuration information;

and the second sending module is used for determining an antenna port corresponding to the antenna port number according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, and sending data to the base station through the antenna port.

According to another aspect of the embodiments of the present invention, there is also provided a base station, including: a first processor, a first memory, and a first transceiver, wherein,

the first processor is used for reading the program in the first memory and executing the following processes:

generating a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information, and transmitting a PDCCH for bearing the control signaling through the first transceiver;

the first transceiver is configured to receive and transmit data under control of the first processor.

Specifically, the indication field included in the control signaling generated by the first processor and used for indicating DMRS configuration information is a field obtained by adding a new bit in the control signaling or a field obtained by modifying an existing bit in the control signaling.

Specifically, when the control signaling generated by the first processor is used as an activation signaling for a second type of scheduling-free uplink transmission, the indication field for indicating the DMRS configuration information is a field obtained by modifying existing bits in the control signaling.

Specifically, the existing bits in the control signaling include: part or all of the bits in the Modulation and Coding Strategy (MCS) field, or/and part or all of the bits in the transmission power control Command (TPC) Command field, or/and part or all of the bits in the hybrid automatic repeat request (HARQ) process number field, or/and part or all of the bits in the Redundancy version field, or/and part or all of the bits in other fields.

Specifically, the first processor sets the length of an indication field for indicating DMRS configuration information to X bits, where X is a preset value.

Specifically, the antenna port number indicated by the indication field for indicating DMRS configuration information included in the control signaling generated by the first processor is a subset or a full set of antenna port numbers indicated by the field for indicating DMRS configuration information in the PDCCH format 0_1 format.

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program executable by a base station, which, when the program is run on the base station, causes the base station to perform the steps of the transmission method of control signaling as described above.

According to another aspect of the embodiments of the present invention, there is also provided a terminal, including: a second memory, a second processor, and a second transceiver, wherein the second transceiver includes a plurality of antenna ports,

the second processor is used for reading the program in the second memory and executing the following processes:

receiving a PDCCH (physical downlink control channel) for carrying a control signaling in a PDCCH format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information;

according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, determining an antenna port corresponding to the antenna port number, and transmitting data through the corresponding antenna port on the second transceiver;

The second transceiver is used for receiving and transmitting data under the control of the second processor.

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program executable by a terminal, which, when run on the terminal, causes the terminal to perform the steps of the data transmission method as described above.

The invention has the following beneficial effects:

the invention discloses a method and a device for transmitting control signaling and data, wherein the method comprises the following steps: a base station generates a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information; and sending the PDCCH carrying the control signaling to the terminal. In the invention, the control signaling in the PDCCHformat 0_0 format comprises the indication field for indicating the DMRS configuration information of the demodulation reference signal, so that the control signaling in the PDCCH format 0_0 format can be used for scheduling uplink transmission, compared with a scheme in the prior art that uplink transmission is scheduled by adopting the control signaling in the PDCCH format 0_1 format, the method can reduce the consumption of PDCCH effective load bits, and can effectively reduce the resource overhead when an uplink supports a plurality of terminals to share resources.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart illustrating a transmission method of control signaling according to an embodiment of the present invention;

fig. 2 is a block diagram of a transmission apparatus for control signaling according to a seventh embodiment of the present invention;

fig. 3 is a block diagram of a data transmission apparatus according to an eighth embodiment of the present invention;

fig. 4 is a schematic structural diagram of a base station according to a ninth embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal in an eleventh embodiment of the present invention.

Detailed Description

In order to solve the problem that resource overhead is large when uplink transmission is scheduled for a control signaling adopting a PDCCH format 0_1 format in the prior art, the invention provides a transmission method and a transmission device of the control signaling and data.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

According to an aspect of the embodiments of the present invention, an embodiment of the present invention provides a method for transmitting control signaling, and fig. 1 is a flowchart of the method for transmitting control signaling in the embodiment of the present invention, as shown in fig. 1, the method includes:

step S101, a base station generates a control signaling in a Physical Downlink Control Channel (PDCCH) format0_0 format, wherein the control signaling in the PDCCH format0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information;

and step S102, sending the PDCCH bearing the control signaling to a terminal.

When uplink transmission is scheduled by using the control signaling in the PDCCH format0_ 1, more PDCCH payload bits are consumed, and the existing control signaling in the PDCCH format0_0 does not include a field for indicating DMRS configuration information of a demodulation reference signal. Therefore, the control signaling in the existing PDCCH format0_0 needs to be modified, so that the control signaling in the PDCCH format0_0 includes an indication field for indicating DMRS configuration information, that is, uplink transmission may be scheduled by using the control signaling in the PDCCH format0_ 0.

Therefore, in the embodiment of the present invention, the control signaling in the PDCCH format0_0 format includes the indication field for indicating the DMRS configuration information, so that the control signaling in the PDCCH format0_0 format can be used to schedule uplink transmission. Therefore, compared with the scheme of scheduling uplink transmission by using the control signaling in the PDCCHformat 0_1 in the prior art, the scheme in the embodiment of the present invention can reduce the consumption of PDCCH payload bits, and can effectively reduce resource overhead when the uplink supports multiple terminals to share resources.

When the control signaling in the existing PDCCH format 0_0 is modified, so that the control signaling in the PDCCH format 0_0 includes an indication field for indicating DMRS configuration information, bits may be added to the control signaling or the existing bits in the control signaling may be modified. That is to say, the indication field for indicating the DMRS configuration information is a field obtained by adding a bit in the control signaling or a field obtained by modifying an existing bit in the control signaling.

Two ways of generating an indication field for indicating DMRS configuration information by adding bits to the control signaling or modifying existing bits in the control signaling will be specifically described below.

Example two

In this embodiment of the present invention, when an indication field for indicating DMRS configuration information is generated by adding bits to a control signaling, the specific steps are as follows: on the basis of the existing bit in the control signaling, a new bit is added to obtain a new field corresponding to the new bit, and the new field is an indication field for indicating the DMRS configuration information. It should be noted that, the method for generating the indication field for indicating the DMRS configuration information by adding the new bit may be applied to the second scheduling-free uplink transmission scheme and may also be applied to other general uplink transmission schemes. It can be understood that, in the embodiment of the present invention, a method for generating an indication field for indicating DMRS configuration information by using a newly added bit is not specifically limited, and an applied uplink transmission scheme is not specifically limited.

EXAMPLE III

In this embodiment of the present invention, when an indication field for indicating DMRS configuration information is generated by modifying existing bits in a control signaling, the specific steps are as follows: determining fields which are not used in the control signaling, wherein bits corresponding to the fields are all existing bits in the control signaling, that is, the existing bits in the control signaling are modified, and the fields generated after modification are indication fields for indicating the DMRS configuration information. It should be noted that, the method of modifying the indication field in which the existing bit is used to indicate the DMRS configuration information may be applied to the second scheduling-free uplink transmission scheme, and may also be applied to other general uplink transmission schemes. It can be understood that, in the embodiment of the present invention, a method for generating an indication field for indicating DMRS configuration information by using a newly added bit is not specifically limited, and an applied uplink transmission scheme is not specifically limited.

Specifically, when the method for generating the indication field for indicating the DMRS configuration information by modifying the existing bits is used, the existing bits in the control signaling may be: part or all of the bits in the modulation and coding strategy MCS field, or/and part or all of the bits in the transmit power control Command TPC Command field, or/and part or all of the bits in the hybrid automatic repeat request number HARQ processumber field, or/and part or all of the bits in the Redundancy version Redundancy field, or/and part or all of the bits in other fields. That is, the existing bits in the control signaling include: some or all of the bits in the existing field. Wherein the existing field includes at least one of: an MCS field, a TPC Command field, an HARQ process number field, a Redundancy version field, and other fields.

For the indication fields generated by the two methods and used for indicating the DMRS configuration information, the field lengths are all set to X bits, where X is a preset value. Here, it should be noted that X is not only a predetermined fixed value but also a preset value. Wherein, X can be determined jointly according to parameters of PUSCH-tp, UL-DMRS-config-type, UL-DMRS-max-len and DMRS CDM. The determination method is the same as the determination method of the length of the antipna ports field in the control signaling of the PDCCH format 0_1 format, and will not be described in detail here. It is understood that, in the implementation of the present invention, the parameters for determining the value of X are not limited to the four parameters of PUSCH-tp, UL-DMRS-config-type, UL-DMRS-max-len, and DMRS CDM. Other parameters that may be used to determine the value of X are within the scope of the embodiments of the present invention.

In addition, since the length of the indication field is set to X bits, the number of antenna port numbers indicated by the DMRS configuration information is at most 2^XAnd (4) respectively. Therefore, the antenna port number indicated by the DMRS configuration information in the embodiment of the present invention is a subset or a complete set of antenna port numbers indicated by a field used for indicating DMRS configuration information in the PDCCH format 0_ 1.

Example four

When a terminal receives a PDCCH carrying a control signaling in a physical downlink control channel PDCCH format 0_0 format, detecting each field in the control signaling in the PDCCH format 0_0 format to obtain DMRS configuration information and other UL grant information, and then sending an uplink data packet by a port corresponding to a port number according to the port number indicated by the DMRS configuration information and the other UL grant information.

In the embodiment of the present invention, since the control signaling in the PDCCH format 0_0 format includes the indication field for indicating the DMRS configuration information, the PDCCH payload bits may be reduced, and when the uplink supports multiple terminals to share resources, the resource overhead may be effectively reduced.

EXAMPLE five

In order to make the process of scheduling uplink transmission by using the control signaling in the PDCCH format 0_0 clearer, the embodiment of the present invention specifically takes the control signaling in the PDCCH format 0_0 format as an activation instruction for scheduling-free uplink transmission of the second type as an example, and specifically describes the specific process as follows:

the first step is as follows: after the base station establishes connection with the terminal, the base station performs second-class scheduling-free uplink transmission semi-static configuration on the terminal, wherein the configuration information comprises the following information:

Periodicity,

Enable transformer precoder,

The number of HARQ processes,

RV configuration,

Power control for PUSCH,

The repetitions of K,

Frequency hopping offset

the second step is that: the base station generates first part information of an activation signaling in a PDCCH format 0_0, which is specifically as follows:

Identifier for DCI formatsFrequency domain resource assignment Timedomain resource assignment,

Frequency hopping flag,

the highest bit can be used as the special bit field

The New data indicator Redundancy version can be used as a special bit field

HARQ process number, which can be a special bit field

TPC command for scheduled PUSCH, which can be used as special bit field

UL/SUL indicator.

The third step: the label in the above steps can be used as a special bit field, wherein the meaning of the bit of a part of fields is modified to generate an indication field indicating the demodulation reference signal DMRS configuration information, for example, the highest bit of the 2 bit of the TPC Command plus the MCS field is used to indicate the DMRS configuration information;

the fourth step: the base station scrambles the PDCCH using the SPS C-RNTI while setting the NDI field to 0.

The fifth step: and the base station sends the generated PDCCH for activating the second type of scheduling-free uplink transmission.

And a sixth step: the terminal receives the PDCCH, the cyclic redundancy CRC check bit is descrambled by using the SPS C-RNTI, and whether the NDI field is set to be 0 or not is checked; after the above conditions are satisfied, the terminal further verifies the verification field of the PDCCH according to the information of the activation signaling.

The seventh step: and after the terminal verifies that the activation signaling passes, acquiring a second type of scheduling-free uplink transmission signaling comprising DMRS configuration information.

Eighth step: after being activated, the terminal may periodically transmit data using the configured resources, including using the ports indicated by the DMRS configuration information, that is, transmitting data through the antenna ports indicated by the DMRS configuration information, wherein the terminal may periodically transmit data on the designated semi-persistent scheduling resources, and the eNodeB periodically receives data on the designated semi-persistent scheduling resources.

The ninth step: and after the second type of scheduling-free uplink transmission is finished, the base station sends a release signaling, and the terminal finishes the second type of scheduling-free uplink transmission after correctly detecting and obtaining the release signaling.

The embodiment of the invention mainly describes a process that when the second type of scheduling-free uplink transmission adopts a control signaling in a PDCCHformat 0_0 format as an activation instruction, a base station sends the activation instruction to a terminal, and the terminal performs uplink transmission according to a port indicated in the activation instruction. Wherein, in the second and third steps, bits of a part of fields are modified to generate an indication field indicating DMRS configuration information.

EXAMPLE six

In the embodiment of the present invention, the configuration of an indication field indicating DMRS configuration information of a demodulation reference signal on a base station and how to determine an antenna end where a terminal transmits data will be specifically described with reference to tables 1 to 6. Where, in tables 1 to 6, X is 2, that is, the field length of the indication field indicating the DMRS configuration information is 2 bits.

Table 1 can be obtained when PUSCH-tp ═ Enabled, UL-DMRS-config-type ═ 1, and UL-DMRS-max-len ═ 1.

TABLE 1

As can be seen from the above description, when X is 2, the number of antenna port numbers indicated by the DMRS configuration information is at most 4, that is, Value can be taken as 0, 1, 2, and 3, the parameter DMRS CDM group(s) is a preset Value, in table 1, all values are taken as 2, and DMRS port is an actual antenna port number indicated by DMRS, so that the finally determined antenna port number for transmitting data is the actual antenna port number indicated by 1000+ DMRS configuration information, and then the antenna port corresponding to the finally determined antenna port number for transmitting data transmits data to the base station.

Table 2 can be obtained when PUSCH-tp ═ Enabled, UL-DMRS-config-type ═ 1, and UL-DMRS-max-len ═ 2.

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
				0	2	0	2
1	2	1	2
				2	2	2	2
3	2	3	2

TABLE 2

Compared with table 1, the number of preamble symbols, that is, the value of UL-DMRS-max-len, is increased in table 2, where when the number of preamble symbols is increased differently, the antenna port numbers indicated by the corresponding DMRSs are also different. Since X is 2 in table 2, the number of antenna port numbers indicated by the DMRS configuration information is at most 4, that is, Value may be 0, 1, 2, and 3, in the embodiment of the present invention, the influence of the Value of UL-DMRS-max-len on the antenna port number indicated by the DMRS is simplified.

When X is 2, the number of antenna port numbers indicated by the DMRS configuration information is at most 4, that is, Value may be 0, 1, 2, and 3, the parameter DMRS CDM group(s) is a preset Value, in table 2, all values are 2, and the DMRS port is an actual antenna port number of the DMRS, so that the finally determined antenna port number for transmitting data is the actual antenna port number indicated by 1000+ DMRS configuration information, and then the antenna port corresponding to the finally determined antenna port number for transmitting data transmits data to the base station.

Table 3 was obtained when PUSCH-tp-Disabled, DL-DMRS-config-type 1, DL-DMRS-max-len-1, and rank 1.

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
			0	2	0
1	2	1
			2	2	2
3	2	3

TABLE 3

Compared with tables 1 and 2, a rank value is newly added in table 3, where the rank value indicates the number of actually selected antenna ports for transmitting data. For example, rank is 1, the terminal only selects 2 indicated by the DMRS configuration information^XAnd selecting one antenna port from the antenna ports corresponding to the antenna port numbers to transmit data.

When X is 2, the number of antenna port numbers indicated by the DMRS configuration information is at most 4, that is, Value may be 0, 1, 2, and 3, the parameter DMRS CDM group(s) is a preset Value, in table 3, all values are 2, and DMRS port is an actual antenna port number of DMRS, because rank is 1. Therefore, the finally determined antenna port number for transmitting data is the 1 actual antenna port number indicated by the 1000+ DMRS configuration information, and then the 1 antenna port corresponding to the finally determined antenna port number for transmitting data transmits data to the base station.

Table 4 was obtained when PUSCH-tp-Disabled, DL-DMRS-config-type 1, DL-DMRS-max-len-2, and rank 1.

TABLE 4

Table 5 was obtained when PUSCH-tp-Disabled, DL-DMRS-config-type 2, DL-DMRS-max-len-1, and rank-1 were used.

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
			0	3	0
1	3	1
			2	3	2
3	3	3

TABLE 5

Table 6 was obtained when PUSCH-tp-Disabled, DL-DMRS-config-type 2, DL-DMRS-max-len-2, and rank 1.

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
				0	3	0	2
1	3	1	2
				2	3	2	2
3	3	3	2

TABLE 6

Since tables 1, 2, and 3 have described a specific manner of determining the antenna port number for transmitting data, that is, the actual port number indicated by the 1000+ configuration information DMRS, tables 4, 5, and 6 are only different from the obtaining conditions of tables 1, 2, and 3, and therefore, how to determine the antenna port number for transmitting data for tables 4, 5, and 6 is not described in detail herein.

The above tables 1 to 6 are only specific examples to explain the configuration of the indication field indicating the DMRS configuration information and how to determine the port for transmitting data in the embodiments of the present invention. It should be noted that, in the embodiment of the present invention, no specific limitation is imposed on the field length of the indication field for indicating the DMRS configuration information, the value of rank, and the values of other parameters. That is, the corresponding situations of all possible field lengths of the indication field, all possible values of rank, and all possible values of other parameters are within the protection scope of the embodiment of the present invention.

EXAMPLE seven

An embodiment of the present invention provides an apparatus for transmitting control signaling, as shown in fig. 2, the apparatus including:

a generating module 201, configured to generate a control signaling in a PDCCH format 0_0 format by a base station, where the control signaling in the PDCCH format 0_0 format includes an indication field for indicating demodulation reference signal DMRS configuration information;

A first sending module 202, configured to send the PDCCH carrying the control signaling to the terminal. In the embodiment of the present invention, the control signaling in the PDCCH format 0_0 format includes the indication field for indicating the DMRS configuration information of the demodulation reference signal, so that the control signaling in the PDCCH format 0_0 format can be used to schedule uplink transmission, and when scheduling uplink transmission by using the control signaling in the PDCCH format 0_1 format in the prior art, consumption of PDCCH payload bits can be reduced, and when an uplink supports multiple terminals to share resources, resource overhead can be effectively reduced.

Specifically, in the embodiment of the present invention, the indication field for indicating DMRS configuration information is a field obtained by adding bits to the control signaling or a field obtained by modifying existing bits.

Specifically, in the embodiment of the present invention, when the control signaling is used as an activation signaling for scheduling-free uplink transmission of the second type, the indication field for indicating the DMRS configuration information is a field obtained by modifying an existing bit in the control signaling.

Specifically, in this embodiment of the present invention, the existing bits in the control signaling include: and partial bits or all bits in the TPCCommand field or/and other fields.

Specifically, in the embodiment of the present invention, the length of the indication field for indicating the DMRS configuration information is set to X bits, where X is a preset value.

Specifically, in this embodiment of the present invention, the antenna port number indicated by the indication field for indicating the DMRS configuration information is a subset or a full set of antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_ 1.

Example eight

According to another aspect of the embodiments of the present invention, there is also provided a data transmission apparatus, as shown in fig. 3, the apparatus including:

a receiving module 301, configured to receive, by a terminal, a PDCCH that carries a control signaling in a physical downlink control channel PDCCH format 0_0 format and is sent by a base station, where the control signaling in the PDCCH format 0_0 format includes an indication field for indicating demodulation reference signal DMRS configuration information;

an obtaining module 302, configured to descramble the PDCCH, and obtain an indication field included in the control signaling and used for indicating DMRS configuration information;

a second sending module 303, configured to determine, according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, an antenna port corresponding to the antenna port number, and send data to the base station through the antenna port.

Example nine

According to another aspect of the embodiments of the present invention, there is also provided a base station, as shown in fig. 4, which is a schematic structural diagram of the base station provided in the embodiments of the present invention, where the base station includes: a first processor 401, a first memory 402, and a first transceiver 403, wherein,

the first processor 401 is configured to read the program in the first memory 402, and perform the following processes:

the first transceiver 403 is configured to receive and transmit data under the control of the first processor 401.

Specifically, in this embodiment of the present invention, the indication field included in the control signaling generated by the first processor 401 for indicating DMRS configuration information is a field obtained by adding a new bit in the control signaling or a field obtained by modifying an existing bit in the control signaling.

Specifically, in this embodiment of the present invention, when the control signaling generated by the first processor 401 is used as an activation signaling for a second-type scheduling-free uplink transmission, the indication field for indicating the demodulation reference signal DMRS configuration information is a field obtained by modifying an existing bit in the control signaling.

Specifically, in this embodiment of the present invention, the existing bits in the control signaling include: part or all of the bits in the modulation and coding strategy MCS field, or/and part or all of the bits in the transmission power control Command TPC Command field, or/and part or all of the bits in the hybrid automatic repeat request process number HARQ process number field, or/and part or all of the bits in the Redundancy version Redundancy field, or/and part or all of the bits in other fields.

Specifically, in this embodiment of the present invention, the first processor 401 sets a length of an indication field used for indicating DMRS configuration information to X bits, where X is a preset value.

Specifically, in this embodiment of the present invention, the antenna port number indicated by the indication field for indicating the DMRS configuration information included in the control signaling generated by the first processor 401 is a subset or a complete set of antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_ 1.

Where, in fig. 4, the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by the first processor 401 and various circuits of the memory represented by the first memory 402, linked together. The bus architecture may also link various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art. Therefore, the embodiments of the present invention will not be further described. The bus interface provides an interface. The first transceiver 403 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The first processor 401 is responsible for managing a bus architecture and general processing, and the first memory 402 may store data used by the first processor 401 when performing operations.

EXAMPLE ten

According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program executable by a base station, the program, when executed on the base station, causing the base station to perform the steps of:

generating a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information;

and sending the PDCCH bearing the control signaling to a terminal.

EXAMPLE eleven

According to another aspect of the embodiments of the present invention, there is also provided a terminal, as shown in fig. 5, which is a schematic structural diagram of the terminal provided in the embodiments of the present invention, where the terminal includes: a second memory 501, a second processor 502, and a second transceiver 503, wherein the second transceiver 503 comprises a plurality of antenna ports,

the second processor 501 is configured to read the program in the second memory 502, and execute the following processes:

According to the antenna port number indicated by the indication field for indicating the DMRS configuration information, determining an antenna port corresponding to the antenna port number, and sending data through the corresponding antenna port on the second transceiver;

the second transceiver 503 is configured to receive and transmit data under the control of the second processor 501.

Where in fig. 5 the bus architecture may comprise any number of interconnected buses and bridges, in particular one or more processors represented by the second processor 501 and various circuits of the memory represented by the second memory 502 are linked together. The bus architecture may also link various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art. Therefore, the embodiments of the present invention will not be further described. The bus interface provides an interface. The second transceiver 503 may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. For different terminals, the terminal interface 504 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The second processor 501 is responsible for managing the bus architecture and general processing, and the second memory 502 may store data used by the second processor 501 in performing operations.

EXAMPLE twelve

According to another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program executable by a terminal, the program, when run on the terminal, causing the terminal to perform the steps of:

descrambling the PDCCH to obtain an indication field which is included in the control signaling and is used for indicating DMRS configuration information;

Thirteen examples

According to another aspect of the embodiments of the present invention, there is also provided a system, including the base station and the terminal as described above, wherein,

the base station is used for generating a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information; sending the PDCCH bearing the control signaling to a terminal;

The terminal is used for receiving a PDCCH (physical downlink control channel) which is sent by a base station and carries a control signaling in a PDCCH format 0_0, wherein the control signaling in the PDCCH format 0_0 comprises an indication field for indicating demodulation reference signal (DMRS) configuration information; descrambling the PDCCH to obtain an indication field which is included in the control signaling and is used for indicating DMRS configuration information; and according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, determining an antenna port corresponding to the antenna port number, and transmitting data to a base station through the antenna port.

The embodiment of the invention discloses a method and a device for transmitting control signaling and data, wherein the method comprises the following steps: a base station generates a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information; and sending the PDCCH carrying the control signaling to the terminal. In the invention, the control signaling in the PDCCHformat 0_0 format comprises the indication field for indicating the DMRS configuration information of the demodulation reference signal, so that the control signaling in the PDCCH format 0_0 format can be used for scheduling uplink transmission, compared with a scheme in the prior art that uplink transmission is scheduled by adopting the control signaling in the PDCCH format 0_1 format, the method can reduce the consumption of PDCCH effective load bits, and can effectively reduce the resource overhead when an uplink supports a plurality of terminals to share resources.

For the system/apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.

It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely application embodiment, or an embodiment combining application and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for transmitting control signaling, the method comprising:

a base station generates a control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information; wherein the indication field for indicating the DMRS configuration information indicates an antenna port number, and the antenna port number is a subset or a full set of the antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_1 format;

and sending the PDCCH bearing the control signaling to a terminal, wherein the PDCCH bearing the control signaling is used for determining an antenna port corresponding to the antenna port number by the terminal according to the antenna port number and sending data to the base station through the antenna port.

2. The method of claim 1, wherein the indication field for indicating demodulation reference signal (DMRS) configuration information is a field obtained by adding new bits in the control signaling or a field obtained by modifying existing bits in the control signaling.

3. The method of claim 2, wherein when the control signaling is used as activation signaling of a second type of scheduling-free uplink transmission, the indication field for indicating the DMRS configuration information is a field obtained by modifying existing bits in the control signaling.

4. The method of claim 2 or 3, wherein existing bits in the control signaling comprise any one or more of: modulating part of bits or all bits in a coding strategy MCS field; transmitting a part of bits or all bits in a TPC Command field; part of or all bits in the HARQ process number field of the number of hybrid automatic repeat request processes; partial bits or all bits in the Redundancy version Redundancy field; and part of bits or all bits in other fields in the control signaling.

5. The method of claim 1, wherein a length of the indication field for indicating the DMRS configuration information is set to X bits, wherein X is a preset value.

6. A method for transmitting data, the method comprising:

a terminal receives a PDCCH (physical downlink control channel) which is sent by a base station and carries control signaling in a PDCCH format 0_0, wherein the control signaling in the PDCCH format 0_0 comprises an indication field for indicating demodulation reference signal (DMRS) configuration information, the indication field for indicating the DMRS configuration information indicates an antenna port number, and the antenna port number is a subset or a complete set of the antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_ 1;

descrambling the PDCCH to acquire an antenna port number indicated by an indication field used for indicating DMRS configuration information in the control signaling;

and according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, determining an antenna port corresponding to the antenna port number, and sending data to a base station through the antenna port.

7. An apparatus for transmission of control signaling, the apparatus comprising:

A generating module, configured to generate a control signaling in a PDCCH format 0_0 format by a base station, where the control signaling in the PDCCH format 0_0 format includes an indication field for indicating demodulation reference signal DMRS configuration information; wherein the indication field for indicating the DMRS configuration information indicates an antenna port number, and the antenna port number is a subset or a complete set of the antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_1 format;

and the PDCCH bearing the control signaling is used for determining an antenna port corresponding to the antenna port number by the terminal according to the antenna port number and transmitting data to the base station through the antenna port.

8. An apparatus for transmitting data, the apparatus comprising:

a receiving module, configured to receive, by a terminal, a PDCCH that is sent by a base station and carries a control signaling in a physical downlink control channel PDCCH format 0_0 format, where the control signaling in the PDCCH format 0_0 format includes an indication field for indicating demodulation reference signal DMRS configuration information, the indication field for indicating DMRS configuration information indicates an antenna port number, and the antenna port number is a subset or a full set of antenna port numbers indicated by fields in the PDCCH format 0_1 format for indicating DMRS configuration information;

An obtaining module, configured to descramble the PDCCH, and obtain an antenna port number indicated by an indication field used for indicating DMRS configuration information in the control signaling;

and a second sending module, configured to determine, according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, an antenna port corresponding to the antenna port number, and send data to the base station through the antenna port.

9. A base station, characterized in that the base station comprises: a first processor, a first memory, and a first transceiver, wherein,

generating control signaling in a Physical Downlink Control Channel (PDCCH) format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information, wherein the indication field for indicating the DMRS configuration information indicates an antenna port number, and the antenna port number is a subset or a full set of the antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_ 1; sending a PDCCH bearing the control signaling to a second transceiver of a terminal through the first transceiver, wherein the PDCCH bearing the control signaling is used for determining an antenna port corresponding to the antenna port number according to the antenna port number after the second transceiver of the terminal receives the PDCCH bearing the control signaling, and sending data through the antenna port on the second transceiver;

10. The base station of claim 9, wherein the indication field included in the control signaling generated by the first processor for indicating DMRS configuration information is a field obtained by adding new bits in the control signaling or a field obtained by modifying existing bits in the control signaling.

11. The base station of claim 10, wherein when the control signaling generated by the first processor is used as activation signaling for a second type of scheduling-free uplink transmission, the indication field for indicating demodulation reference signal (DMRS) configuration information is a field obtained by modifying existing bits in the control signaling.

12. The base station of claim 10 or 11, wherein existing bits in the control signaling comprise any one or more of: modulating part of bits or all bits in a coding strategy MCS field; transmitting a part of bits or all bits in a TPC Command field; part of or all bits in the HARQ process number field of the number of hybrid automatic repeat request processes; partial bits or all bits in the Redundancy version Redundancy field; and part of bits or all bits in other fields in the control signaling.

13. The base station of claim 9, wherein the first processor sets a length of an indication field for indicating DMRS configuration information to X bits, wherein X is a preset value.

14. A computer-readable storage medium storing a computer program executable by a base station, which when run on the base station causes the base station to perform the steps of the method of any one of claims 1 to 5.

15. A terminal, characterized in that the terminal comprises: a second memory, a second processor, and a second transceiver, wherein the second transceiver includes a plurality of antenna ports,

receiving a PDCCH (physical downlink control channel) for carrying control signaling in a PDCCH format 0_0 format, wherein the control signaling in the PDCCH format 0_0 format comprises an indication field for indicating demodulation reference signal (DMRS) configuration information, the indication field for indicating the DMRS configuration information indicates an antenna port number, and the antenna port number is a subset or a complete set of the antenna port numbers indicated by the field for indicating the DMRS configuration information in the PDCCH format 0_ 1;

Descrambling the PDCCH to obtain an antenna port number indicated by an indication field used for indicating DMRS configuration information in the control signaling;

according to the antenna port number indicated by the indication field for indicating the DMRS configuration information, determining an antenna port corresponding to the antenna port number, and sending data through the antenna port on the second transceiver;

16. A computer-readable storage medium, characterized in that it stores a computer program executable by a terminal, which program, when run on the terminal, causes the terminal to carry out the steps of the method as claimed in claim 6.