CN109150426B

CN109150426B - DCI format information transmission method, related equipment and system

Info

Publication number: CN109150426B
Application number: CN201710453566.3A
Authority: CN
Inventors: 李建军
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-06-15
Filing date: 2017-06-15
Publication date: 2021-04-06
Anticipated expiration: 2037-06-15
Also published as: CN109150426A

Abstract

The embodiment of the invention provides a DCI format information transmission method, related equipment and a system, wherein the method comprises the following steps: allocating a Resource Block (RB) for transmitting a demodulation reference signal (DMRS) sequence; sending first DCI format information to a first user terminal, wherein the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used for indicating a bandwidth segment to which the RB belongs, and the resource allocation indication is used for indicating a position or a sequence number of the RB in the bandwidth segment. The implementation of the invention can reduce the cost of the DCI format information.

Description

DCI format information transmission method, related equipment and system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a related device, and a system for transmitting Downlink Control Information format (DCI format) Information.

Background

In current communication systems, the demodulation Reference Signal (DMRS) used by each ue to demodulate in downlink is configured independently for each ue at each transmission, and the DMRS occupies the bandwidth allocated to the ue data transmission.

However, in future communication systems (e.g. 5G system), the highest bandwidth in a carrier can reach 400MHz, and even wider frequency band, for the user terminal, there are too many RBs available in the bandwidth, which results in too much overhead of DCI format information.

Disclosure of Invention

The embodiment of the invention provides a method, related equipment and a system for transmitting DCI format information, which aim to solve the problem of excessive cost of the DCI format information.

In a first aspect, an embodiment of the present invention provides an information transmission method, including:

allocating RBs for transmitting DMRS sequences;

sending first DCI format information to a first user terminal, wherein the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used for indicating a bandwidth segment to which the RB belongs, and the resource allocation indication is used for indicating a position or a sequence number of the RB in the bandwidth segment.

In a second aspect, an embodiment of the present invention provides a method for transmitting DCI format information, where the method is applied to a first user terminal, and includes:

receiving first DCI format information sent by network side equipment, wherein the first DCI format information comprises a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used for indicating a bandwidth segment to which an RB for sending a DMRS sequence belongs, and the resource allocation indication is used for indicating the position or sequence number of the RB in the bandwidth segment;

and determining the bandwidth segment to which the RB belongs according to the bandwidth segment indication, and determining the position or the sequence number of the RB in the bandwidth segment according to the resource allocation indication.

In a third aspect, an embodiment of the present invention provides a network side device, including:

the device comprises an allocation module, a receiving module and a transmitting module, wherein the allocation module is used for allocating Resource Blocks (RB) for transmitting DMRS sequences;

a first sending module, configured to send first DCI format information to a first user terminal, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which the RB belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment.

In a fourth aspect, an embodiment of the present invention provides a user terminal, where the user terminal is a first user terminal, and the user terminal includes:

a first receiving module, configured to receive first DCI format information sent by a network side device, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which an RB that sends a DMRS sequence belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment;

a determining module, configured to determine a bandwidth segment to which the RB belongs according to the bandwidth segment indication, and determine a position or a sequence number of the RB in the bandwidth segment according to the resource allocation indication.

In a fifth aspect, an embodiment of the present invention provides a network side device, including: the processor, the memory, the transceiver and the user interface are coupled together through a bus system, and the processor is configured to read a program in the memory and execute steps in the method for transmitting DCI format information at a network side device according to the embodiment of the present invention.

In a sixth aspect, an embodiment of the present invention provides a user terminal, including: the processor, the memory, the network interface and the user interface are coupled together through a bus system, and the processor is used for reading a program in the memory and executing steps in the method for transmitting the DCI format information at the user terminal side provided by the embodiment of the invention.

In a seventh aspect, an embodiment of the present invention provides a system for transmitting DCI format information, where the system includes a network side device and a user terminal that are provided in the embodiment of the present invention.

In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a DCI format information transmission program is stored on the computer-readable storage medium, and when the DCI format information transmission program is executed by a processor, the step of providing a method for transmitting DCI format information on a network side device according to an embodiment of the present invention is implemented.

In a ninth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a DCI format information transmission program is stored on the computer-readable storage medium, and the DCI format information transmission program, when executed by a processor, implements the steps of the method for providing DCI format information transmission at a user terminal according to the embodiment of the present invention.

In this way, in the embodiment of the present invention, a resource block RB for transmitting a demodulation reference signal DMRS sequence is allocated; sending first DCI format information to a first user terminal, wherein the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used for indicating a bandwidth segment to which the RB belongs, and the resource allocation indication is used for indicating a position or a sequence number of the RB in the bandwidth segment. Since the DCI format information only needs to indicate the position or sequence of the bandwidth segment of the RB, overhead of the DCI format information can be reduced.

Drawings

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

Fig. 1 is a structural diagram of a DCI format information transmission system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of a method for transmitting DCI format information according to an embodiment of the present invention;

fig. 3 is a flowchart of another DCI format information transmission method according to an embodiment of the present invention;

fig. 4 is a flowchart of another DCI format information transmission method according to an embodiment of the present invention;

fig. 5 is a flowchart of another method for transmitting DCI format information according to an embodiment of the present invention;

fig. 6 is a flowchart of another method for transmitting DCI format information according to an embodiment of the present invention;

fig. 7 is a block diagram of a network side device to which an embodiment of the present invention is applied;

fig. 8 is a block diagram of another network-side device to which the present invention is applied;

fig. 9 is a block diagram of another network-side device to which the present invention is applied;

fig. 10 is a block diagram of another network-side device to which an embodiment of the present invention is applied;

fig. 11 is a block diagram of another network-side device to which the present invention is applied;

fig. 12 is a block diagram of a user terminal to which the embodiment of the present invention is applied;

fig. 13 is a block diagram of another user terminal to which the embodiment of the present invention is applied;

fig. 14 is a block diagram of another user terminal to which the embodiment of the present invention is applied;

fig. 15 is a block diagram of another network-side device to which the present invention is applied;

fig. 16 is a block diagram of another user terminal to which the embodiment of the present invention is applied.

Detailed Description

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

Referring to fig. 1, fig. 1 is a structural diagram of a DCI format information transmission system applicable to the embodiment of the present invention, and as shown in fig. 1, the DCI format information transmission system includes a first user terminal 11 and a network side device 12, where the first user terminal 11 may be a ue (user equipment), for example: the first user terminal 11 may be a terminal-side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that the specific type of the first user terminal 11 is not limited in the embodiment of the present invention. The first user terminal 11 may establish communication with the network-side device 12, where a network in the drawing may indicate that the first user terminal 11 establishes communication with the network-side device 12 wirelessly, and the network-side device 12 may be a Transmission Reception Point (TRP), or may be a base station, and the base station may be a macro station, such as an LTE eNB, a 5G NR NB, or the like; the network side device 12 may also be an Access Point (AP). In some scenarios, for example: in a Multi-user MIMO (Multi-input Multi-output) scenario, the system may further include a second user terminal 13, which may also be a UE, for example: the terminal side Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like. And the transmitting and receiving capabilities of the first user terminal 11 and the second user terminal 13 may be different, for example: the first user terminal 11 is a user terminal supporting a broadband, and the second user terminal 13 is a user terminal supporting a narrowband.

It should be noted that, in the embodiment of the present invention, the specific type of the network-side device 12 is not limited, and the specific functions of the first user terminal 11, the network-side device 12, and the second user terminal 13 will be specifically described through a plurality of embodiments below.

Referring to fig. 2, fig. 2 is a flowchart of a method for transmitting DCI format information according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:

step 201, allocating an RB for transmitting a DMRS sequence.

The DMRS sequence may be a DMRS sequence applied to multi-user MIMO operation, which is not limited in this embodiment of the present invention.

In addition, the RB used for transmitting the DMRS sequence may be an RB used when the network side device transmits the DMRS sequence, that is, the DMRS sequence may be transmitted on the RB. The RB may be one or more RBs, which is not limited in this embodiment of the present invention.

Step 202, sending first DCI format information to a first user terminal, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which the RB belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment.

In the embodiment of the present invention, bandwidth resources of a carrier (i.e., the entire bandwidth of the carrier) may be divided into a plurality of bandwidth segments, and the number of resources included in each bandwidth segment may be equal or unequal.

Since the DCI format information indicates the bandwidth segment to which the RB belongs through the bandwidth segment indication and indicates the position or sequence number of the RB in the bandwidth segment through the resource allocation indication, the DCI format information may be reduced because it is not necessary to indicate the position or sequence of the RB in the bandwidth resource of the carrier (i.e., the entire bandwidth of the carrier).

It should be noted that the method described above may be applied to the network side device in the system shown in fig. 1, and the embodiment of the present invention may be applied to a Long Term Evolution (LTE) system, for example: the 5G System may also be extended to a scenario where a Global System for Mobile Communication (GSM) or a multi-carrier Code Division Multiple Access (CDMA) technology is applied, and the embodiment of the present invention is not limited thereto.

In the embodiment, a resource block RB for transmitting a demodulation reference signal DMRS sequence is allocated; sending first DCI format information to a first user terminal, wherein the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used for indicating a bandwidth segment to which the RB belongs, and the resource allocation indication is used for indicating a position or a sequence number of the RB in the bandwidth segment. Since the DCI format information only needs to indicate the position or sequence of the bandwidth segment of the RB, overhead of the DCI format information can be reduced.

Referring to fig. 3, fig. 3 is a flowchart of another DCI format information transmission method according to an embodiment of the present invention, and as shown in fig. 3, the method includes the following steps:

step 301, dividing the bandwidth resource of the carrier into a plurality of bandwidth segments.

The carrier may be a primary carrier/cell Pcell (primary carrier/cell Pcell) or a secondary carrier/cell Scell (secondary carrier/cell Scell). And step 301 may be to divide the bandwidth resources of the carrier (the entire bandwidth of the carrier) into a plurality of bandwidth segments according to the subcarrier spacing, for example: and dividing continuous bandwidth resources with the same subcarrier interval in the carrier into the same bandwidth segment to obtain a plurality of bandwidth segments.

Optionally, each bandwidth segment within the carrier has a uniform subcarrier spacing.

The uniform subcarrier spacing of each bandwidth segment may be that only one subcarrier spacing exists in each bandwidth segment, that is, for any bandwidth segment, the subcarrier spacing in the bandwidth segment is the same, and the subcarrier spacing of different bandwidth segments may be different, or the subcarrier spacing of adjacent bandwidth segments is different. In addition, the resource blocks in each bandwidth segment in the carrier are consecutive. Therefore, the resource blocks in each bandwidth segment are continuous, so that discrete resource blocks are avoided, and the resource utilization rate is improved.

Step 302, sending configuration information of each bandwidth segment to the first user terminal.

Step 302 may send the configuration information to the first ue through a Radio Resource Control (RRC) message. In addition, the configuration information may be information for describing resource configuration of the bandwidth segment, for example: the configuration information may include at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

Wherein the frequency position may represent a position of a center frequency or a start frequency of a bandwidth segment, and the bandwidth may represent a bandwidth of the bandwidth segment, for example: the number of RBs included and the subcarrier spacing may represent the subcarrier spacing of the bandwidth segment and the cell identification may represent the cell ID required to generate a random sequence within the bandwidth segment. For example: as shown in table 1:

TABLE 1 information fields of Bandwidth fragment configuration

It should be noted that, since the configuration information may include at least one of a frequency location, a bandwidth, a subcarrier spacing, and a cell identifier, when the frequency location, the bandwidth, the subcarrier spacing, and the cell identifier are not included in the configuration information, the information that is not included in the configuration information may be configured to the user terminal in a preconfigured manner.

It should be noted that, in this embodiment, step 301 and step 302 are optional, for example: the configuration information may be pre-configured to the first user terminal.

And step 303, allocating RBs for transmitting the DMRS sequences.

In particular, a bandwidth segment may be selected within which RBs for transmitting DMRS sequences are allocated.

Step 304, sending first DCI format information to a first user terminal, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which the RB belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment.

In step 304, the first DCI format information may be transmitted together with a PDSCH (Physical Downlink Shared Channel) signal. Thus, the user terminal can detect the DCI format, thereby obtaining the resource configuration information of the PDSCH and the configuration information of the DMRS sequence. Then, channel estimation can be performed through the DMRS sequence and the PDSCH can be detected using the estimated channel value, so as to obtain data for downlink transmission.

Optionally, the first DCI format information may include, in addition to the bandwidth segment indication and the resource allocation indication, other contents, for example: as shown in table 2:

table 2. downlink broadband transmission DCI format table of contents

Of course, table 2 is only an example, and in the embodiment of the present invention, the content included in the DCI format information is not limited except for the bandwidth segment indication and the resource allocation indication.

Optionally, before the step of sending the first DCI format information to the first user terminal, the method further includes:

and generating the DMRS sequence according to the sub-carrier interval of the RB.

The DMRS sequence may be generated according to the number of RBs that can be supported at most in downlink and corresponding to the subcarrier interval, or may be generated according to a correspondence relationship between the subcarrier interval and the DMRS sequence, which is acquired in advance.

Optionally, the generating the DMRS sequence according to the subcarrier spacing of the RB includes:

and generating the DMRS sequence according to the number of RBs which can be supported at most by downlink and correspond to the subcarrier intervals of the RBs and the number of Resource Elements (REs) used for transmitting the DMRS sequence in the RBs.

The subcarrier spacing of the RB may be a subcarrier spacing of a bandwidth segment to which the RB belongs, and the number of multiple RBs that can be supported at most in downlink may be predefined for different subcarrier spacings. The number of REs used for transmitting the DMRS sequence within the RB may be REs occupied within the RB when the DMRS sequence is transmitted. The generating of the DMRS sequence may be, according to the number of RBs supported by the downlink most at most and the number of REs used for transmitting the DMRS sequence in the RB, that are corresponding to the subcarrier spacing of the RB, performing correlation operation on the number of RBs supported by the downlink most and the number of REs to generate the DMRS sequence, or may be, according to a correspondence relationship between the number of RBs supported by the downlink most, the number of REs, and the DMRS sequence, which is obtained in advance, to generate the DMRS sequence.

Preferably, the generating the DMRS sequence according to the number of RBs that can be supported at most in a downlink corresponding to the subcarrier spacing of the RB includes:

and generating a pseudo-random sequence according to the product of the number of RBs which are most supported by downlink and correspond to the subcarrier intervals of the RBs and the number of REs used for transmitting the DMRS sequence in the RBs, calculating the pseudo-random sequence, and taking the calculation result as the DMRS sequence.

For example, by generating the above-described DMRS sequence:

wherein

Wherein r (m) represents the above DMRS sequence, c (i) is a pseudo random sequence,

the number of RBs which can be supported most downlink corresponding to the subcarrier spacing of the RB is described above, where the Normal Cyclic Prefix represents a Normal Cyclic Prefix, that is, when the Normal Cyclic Prefix is used, the number of REs used for transmitting DMRS sequences in the RB is 12, and the extended Cyclic Prefix represents an extended Cyclic Prefix, that is, when the extended Cyclic Prefix is used, the number of REs used for transmitting DMRS sequences in the RB is 16, where 12 and 16 are merely examples, and the number of REs used for transmitting DMRS sequences in the RB may be one variable.

In addition, the initial value of c (i) above may be determined by the following formula:

wherein n is_SCID0 or 1, can be given by DCI format information, and

may be derived from the RRC configuration of the system. If there is no relevant configuration for the device,

the cell identity (PCID) in the configuration information of the located bandwidth segment.

The DMRS sequence is generated in the above manner, so that the length of the DMRS sequence is determined by the number of RBs which can be supported at most by downlink and correspond to the subcarrier intervals of the RBs and the number of REs used for transmitting the DMRS sequence in the RBs, and the performance of the DMRS sequence is improved.

Optionally, the number of RBs which can be supported at most by downlink and corresponding to the subcarrier spacing of the RB is, the number of RBs which can be supported at most by downlink in a preset carrier is divided by 2^kThe obtained operation result, wherein, 2^kThe calculation result is obtained by dividing the subcarrier interval of the RB by the preset lowest subcarrier interval in the carriers.

In this embodiment, the number of RBs that can be supported at most by downlink in a plurality of the carriers may be predefined according to different subcarrier spacings

For example, the number of RBs supported at most in downlink corresponding to the bandwidth segment of the subcarrier spacing f0 is equal to

Setting the number of RBs which can be supported at most by downlink in a preset carrier, wherein a subcarrier spacing f0 is the lowest subcarrier spacing in the carrier; the number of the RBs which can be supported at most in the downlink and correspond to the bandwidth segment of the subcarrier spacing f1 is

…, the number of RBs which can be supported at most by the downlink corresponding to the bandwidth segment of the subcarrier spacing fn is

Wherein fn is 2ⁿXf 0, such that

That is, the number of RBs supported by the downlink at most corresponding to the bandwidth segment with the subcarrier spacing fk

Determining DM through the number of the RBs which can be supported at most by the downlink corresponding to the subcarrier spacing of the RBsThe length of the RS sequence can improve the performance of the DMRS sequence.

Optionally, after the step of generating the DMRS sequence according to the subcarrier spacing of the RB, the method further includes:

and selecting a target DMRS sequence segment from the DMRS sequences according to the sequence number of a starting RB in the bandwidth resources of the carrier in the bandwidth segment to which the RB belongs and the number of RBs used by the bandwidth segment in transmission, and transmitting the target DMRS sequence segment in the RB.

In this embodiment, only the DMRS sequence segment needs to be transmitted when the DMRS sequence is transmitted, so that transmission resources are saved. For example: the target DMRS sequence segment is a sequence segment

Corresponding DMRS sequence segment, wherein RB0 is the sequence number of the initial RB in the bandwidth resource of the carrier in the bandwidth segment to which the RB belongs, and

the number of RBs used in transmission for a bandwidth segment.

Preferably, the target DMRS sequence segment is a sequence element in the DMRS sequence corresponding to an RB used by the bandwidth segment in transmission.

In this embodiment, the length of the DMRS sequence segment that can be transmitted is determined by the subcarrier spacing of the RB

And (6) determining. For example: subcarrier spacing of the above RB is f_kLength of DMRS sequence of

The target DMRS sequence segment may be determined as shown in the following formula:

wherein

Wherein r (m) represents the above-mentioned target DMRS sequence segment, c (i) is a pseudo-random sequence,

the initial value of c (i) is determined by the following formula, for the number of RBs that can be supported at most in the downlink corresponding to the subcarrier spacing of the RB:

wherein n is_SCID0 or 1, can be given by DCI format information, and

In this embodiment, the number of RBs used in transmission can be realized by the target DMRS sequence segment as described above

Is far less than

Therefore, only part of the DMRS transmission sequence is actually transmitted, and the actually used sequence segment is

Wherein RB0 is the sequence number of the starting RB in the bandwidth resource of the carrier in the bandwidth segment to which the above RB belongs,or for example: and the sequence number of the initial RB corresponding to the subcarrier interval used by the PDSCH frequency resource allocated to the DMRS sequence. Wherein, the sequence number is a sequence number of the RB in a bandwidth resource (entire bandwidth) of the carrier.

Optionally, the DMRS sequence is a DMRS sequence shared by the first user terminal and the second user terminal.

In this embodiment, multiple users may share DMRS sequences, for example: the first user terminal and the second user terminal are user terminals of a multi-user MIMO scene.

Optionally, the first user terminal is a user terminal supporting a wideband, and the second user terminal is a user terminal supporting a narrowband;

after the step of allocating resource blocks, RBs, for transmitting demodulation reference signal, DMRS, sequences, the method further comprises:

and sending second DCI format information to the second user terminal, wherein the second DCI format information comprises a resource allocation indication for indicating the position or the sequence number of the RB in the bandwidth resource of the carrier.

The ue supporting the wideband may be a ue supporting the highest bandwidth of a carrier (e.g., Pcell or Scell), but is not limited in this embodiment of the present invention, for example: the user terminal supporting the bandwidth may also be a user terminal supporting a preset bandwidth (e.g., 400MHz or 300 MHz). And the user terminal supporting the narrow band may be a user terminal supporting a part of the highest bandwidth of the carrier, for example: only 20MHz or 100MHz user terminals are supported.

In this embodiment, it is possible to implement that a user terminal supporting a wideband and a user terminal supporting a narrowband share a DMRS sequence, and for the user terminal supporting the wideband, the resource allocation in the DCI format information indicates a position or a sequence number in a bandwidth segment for indicating an RB used by a user, instead of a sequence number in the entire bandwidth. For the user terminals supporting the narrow band, the resource allocation indication in the DCI format information is used for indicating the position of the RB used by the user in the subcarrier, so that the user terminals with different capabilities can share the DMRS sequences, namely the same DMRS sequences are used, and the DMRS sequences of all the user terminals are RB serial numbers used in the whole bandwidth, thereby ensuring the smooth operation of broadband transmission.

In this embodiment, the bandwidth resources in the carrier may be divided into multiple bandwidth segments through the above steps, so that the DCI format information indicates that only the RB in the bandwidth segment needs to be indicated, thereby reducing the overhead of the DCI format information.

Referring to fig. 4, fig. 4 is a flowchart of another DCI format information transmission method according to an embodiment of the present invention, and as shown in fig. 4, the method includes the following steps:

step 401, receiving first DCI format information sent by a network side device, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which an RB that sends a DMRS sequence belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment.

For the first DCI format information, reference may be made to corresponding descriptions in the embodiments shown in fig. 2 and fig. 3, which are not described herein again.

Step 402, determining the bandwidth segment to which the RB belongs according to the bandwidth segment indicator, and determining the position or sequence number of the RB in the bandwidth segment according to the resource allocation indicator.

After receiving the first DCI format information, the ue may obtain the bandwidth segment indication and the resource allocation indication, and further determine the positions or sequence numbers of the bandwidth segment and the RB in the bandwidth segment. Thereafter, the user terminal may receive the DMRS sequence within the RB.

In this embodiment, the DCI format information indicates that only the RB in the bandwidth segment needs to be indicated, so that the overhead of the DCI format information is reduced.

Referring to fig. 5, fig. 5 is a flowchart of another DCI format information transmission method according to an embodiment of the present invention, and as shown in fig. 5, the method includes the following steps:

step 501, receiving configuration information of each bandwidth segment sent by the network side device, where each bandwidth segment is obtained by dividing bandwidth resources of a carrier.

The configuration information may refer to the corresponding description of the embodiment shown in fig. 3, which is not described herein again.

Step 502, receiving first DCI format information sent by a network side device, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used for indicating a bandwidth segment to which an RB that sends a DMRS sequence belongs, and the resource allocation indication is used for indicating a position or a sequence number of the RB in the bandwidth segment.

Step 503, determining the bandwidth segment to which the RB belongs according to the bandwidth segment indicator, and determining the position or sequence number of the RB in the bandwidth segment according to the resource allocation indicator.

After the user terminal determines the position or the sequence number of the RB in the bandwidth segment, the DMRS sequence may be received in the RB, and channel estimation may be completed by receiving the DMRS sequence, so as to detect data information of the user, thereby completing broadband transmission.

Optionally, the configuration information includes at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

The configuration information may refer to corresponding descriptions of the embodiment shown in fig. 3, which are not described herein again and may achieve the same beneficial effects.

Optionally, each bandwidth segment in the carrier has a uniform subcarrier spacing.

For the above bandwidth segments having uniform subcarrier spacing, reference may be made to the corresponding description of the embodiment shown in fig. 3, which is not described herein again, and the same beneficial effects may be achieved.

Optionally, the DMRS sequence is a DMRS sequence generated according to the subcarrier spacing of the RB.

The DMRS sequence may refer to corresponding descriptions in the embodiment shown in fig. 3, which are not described herein again and may achieve the same beneficial effects.

Optionally, the DMRS sequence is a DMRS sequence generated according to a number of RBs that can be supported most downlink and corresponding to a subcarrier interval of the RB and a number of REs used for transmitting the DMRS sequence in the RB.

Optionally, the DMRS sequence is an operation result obtained by generating a pseudo-random sequence according to the number of RBs that can be supported by the downlink at most corresponding to the subcarrier spacing of the RB, and performing operation on the pseudo-random sequence.

The number of RBs that can be supported at most by the downlink corresponding to the subcarrier spacing of the RB may refer to the corresponding description of the embodiment shown in fig. 3, which is not described herein again, and the same beneficial effects may be achieved.

Optionally, after the steps of determining the bandwidth segment to which the RB belongs according to the bandwidth segment indication and determining the position or sequence number of the RB in the bandwidth segment according to the resource allocation indication, the method further includes:

and receiving a target DMRS sequence segment sent by the network side equipment at the RB, wherein the target DMRS sequence segment is selected from the DMRS sequence according to the sequence number of a starting RB in the bandwidth resource of the carrier in the bandwidth segment to which the RB belongs and the number of RBs used by the bandwidth segment in transmission.

For the above target DMRS sequence segment, reference may be made to corresponding descriptions in the embodiment shown in fig. 3, which are not described herein again, and the same beneficial effects may be achieved.

Optionally, the target DMRS sequence segment is a sequence element in the DMRS sequence corresponding to an RB used by the bandwidth segment in transmission.

Optionally, the first user terminal is a user terminal supporting a wideband, and the second user terminal is a user terminal supporting a narrowband.

The above-mentioned user terminal supporting the wideband and the user terminal supporting the narrowband may refer to the corresponding description of the embodiment shown in fig. 3, which is not described herein again, and may achieve the same beneficial effects.

In this embodiment, various optional embodiments are added on the basis of the embodiment shown in fig. 3, and the overhead of DCI format information can be reduced.

Referring to fig. 6, fig. 6 is a flowchart of another DCI format information transmission method according to an embodiment of the present invention, and as shown in fig. 6, the method includes the following steps:

step 601, the network side device divides the bandwidth resource of the carrier into a plurality of bandwidth segments.

For the above-mentioned division of multiple bandwidth segments, reference may be made to the corresponding description of the embodiment shown in fig. 3, which is not described herein again.

Step 602, the network side device allocates frequency resources for the PDSCH signals.

The frequency resource may be a frequency resource used by the network side device to transmit the PDSCH.

Step 603, the network side device generates the DMRS sequence.

For the above generation of the DMRS sequence, refer to the corresponding description of the embodiment shown in fig. 3, which is not described herein again.

Step 604, the network side device generates DCI format information.

The DCI format information may be the first DCI format information in the embodiment shown in fig. 3.

Step 604, the network side device sends the DCI format information and the PDSCH signal.

In this step, the DCI format information is transmitted together with the PDSCH signal.

Step 605, the user terminal detects the DCI format information, and acquires the resource allocation information of the PDSCH signal and the configuration information of the DMRS sequence.

The DCI format information may include resource allocation information of a PDSCH signal and configuration information of a DMRS sequence, so that the user terminal may obtain the resource allocation information of the PDSCH signal and the configuration information of the DMRS sequence by detecting the DCI format information.

And step 606, the user terminal detects the DMRS sequence according to the configuration information of the DMRS sequence and carries out channel estimation to obtain a channel estimation result.

In this step, the user equipment may perform channel estimation using the detected DMRS sequence to obtain a channel estimation result.

Step 607, the user terminal detects the PDSCH signal according to the channel estimation result and the resource allocation information of the PDSCH signal.

Through the steps, the user terminal and the network side equipment can transmit the PDSCH signal, and the cost of DCI format information can be reduced.

Referring to fig. 7, fig. 7 is a structural diagram of a network-side device applied in an embodiment of the present invention, and as shown in fig. 7, the network-side device 700 includes:

an allocating module 701, configured to allocate a resource block RB for transmitting a DMRS sequence;

a first sending module 702, configured to send first DCI format information to a first user terminal, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which the RB belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment.

Optionally, as shown in fig. 8, the network-side device 700 further includes:

a dividing module 703, configured to divide a bandwidth resource of a carrier into multiple bandwidth segments;

a second sending module 704, configured to send configuration information of each bandwidth segment to the first user terminal.

Optionally, the configuration information includes at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

Optionally, as shown in fig. 9, the network-side device 700 further includes:

a generating module 705, configured to generate the DMRS sequence according to the subcarrier spacing of the RB.

Optionally, the generating module 705 is specifically configured to generate the DMRS sequence according to the number of RBs which can be supported most downlink and correspond to the subcarrier interval of the RB and the number of Resource Elements (REs) used for transmitting the DMRS sequence in the RB.

Optionally, the generating module 705 is specifically configured to generate a pseudo-random sequence according to a product of the number of RBs that can be supported most downlink and correspond to the subcarrier interval of the RB and the number of Resource Elements (REs) used for transmitting the DMRS sequence in the RB, perform an operation on the pseudo-random sequence, and use an operation result as the DMRS sequence.

Optionally, as shown in fig. 10, the network-side device 700 further includes:

a third sending module 706, configured to select a target DMRS sequence segment in the DMRS sequence according to a sequence number of a starting RB in a bandwidth resource of a carrier in a bandwidth segment to which the RB belongs and the number of RBs used by the bandwidth segment in transmission, and send the target DMRS sequence segment in the RB.

Optionally, the first user terminal is a user terminal supporting a wideband, and the second user terminal is a user terminal supporting a narrowband; as shown in fig. 11, the network-side device 700 further includes:

a fourth sending module 707, configured to send second DCI format information to the second user terminal, where the second DCI format information includes a resource allocation indication used to indicate a position or a sequence number of the RB in a bandwidth resource of a carrier.

It should be noted that, in this embodiment, the network-side device 700 may be a network-side device according to any implementation manner in the method embodiment of the present invention, and any implementation manner of the network-side device in the method embodiment of the present invention may be implemented by the network-side device 700 in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

Referring to fig. 12, fig. 12 is a structural diagram of a user terminal applied in the embodiment of the present invention, as shown in fig. 12, a user terminal 1200 includes:

a first receiving module 1201, configured to receive first DCI format information sent by a network side device, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which an RB that sends a DMRS sequence belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment;

a determining module 1202, configured to determine, according to the bandwidth segment indication, a bandwidth segment to which the RB belongs, and determine, according to the resource allocation indication, a position or a sequence number of the RB in the bandwidth segment.

Optionally, as shown in fig. 13, the user terminal 1200 further includes:

a second receiving module 1203, configured to receive configuration information of each bandwidth segment sent by the network side device, where each bandwidth segment is a bandwidth segment obtained by dividing bandwidth resources of a carrier.

Optionally, the configuration information includes at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

Optionally, as shown in fig. 14, the user terminal 1200 further includes:

a third receiving module 1204, configured to receive, at the RB, a target DMRS sequence segment sent by the network-side device, where the target DMRS sequence segment is a target DMRS sequence segment selected from the DMRS sequences according to a sequence number of a starting RB in a bandwidth resource of a carrier in a bandwidth segment to which the RB belongs and the number of RBs used by the bandwidth segment in transmission.

It should be noted that, in this embodiment, the user terminal 1200 may be a user terminal in any implementation manner in the method embodiment of the present invention, and any implementation manner of the user terminal in the method embodiment of the present invention may be implemented by the user terminal 1200 in this embodiment, and the same beneficial effects are achieved, and details are not described here.

Referring to fig. 15, fig. 15 is a structural diagram of a network side device to which the embodiment of the present invention is applied, and as shown in fig. 15, the network side device 1500 includes: a processor 1501, a transceiver 1502, a memory 1503, a user interface 1504, and a bus interface, wherein:

the processor 1501, which is configured to read the program in the memory 1503, executes the following processes:

allocating RBs for transmitting DMRS sequences;

Wherein the transceiver 1502 is configured to receive and transmit data under the control of the processor 1501, the transceiver 1502 includes at least two antenna ports.

In fig. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1501, and various circuits, represented by memory 1503, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1502 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1504 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1501 is responsible for managing a bus architecture and general processing, and the memory 1503 may store data used by the processor 1501 in performing operations.

Optionally, before the step of sending the first DCI format information to the first user terminal, the processor 1501 is further configured to:

dividing bandwidth resources of a carrier into a plurality of bandwidth segments;

and sending the configuration information of each bandwidth segment to the first user terminal.

Optionally, the configuration information includes at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

Optionally, the generating, by the processor 1501, the DMRS sequence according to the subcarrier spacing of the RB includes:

Optionally, the generating, by the processor 1501, the DMRS sequence according to the number of RBs that can be supported at most in a downlink corresponding to the subcarrier spacing of the RB includes:

and generating a pseudo-random sequence according to the product of the number of RBs which are most supported by downlink and correspond to the subcarrier intervals of the RBs and the number of Resource Elements (REs) used for transmitting the DMRS sequence in the RBs, calculating the pseudo-random sequence, and taking the calculation result as the DMRS sequence.

Optionally, after the step of generating the DMRS sequence according to the subcarrier spacing of the RB, the processor 1501 is further configured to:

after the step of allocating resource blocks RB for transmitting demodulation reference signal DMRS sequences, the processor 1501 is further configured to:

It should be noted that, in this embodiment, the network-side device 1500 may be a network-side device in any implementation manner in the method embodiment of the present invention, and any implementation manner of the network-side device in the method embodiment of the present invention may be implemented by the network-side device 1500 in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

Referring to fig. 16, fig. 16 is a structural diagram of a user terminal to which the embodiment of the present invention is applied. As shown in fig. 16, the user terminal 1600 includes: at least one processor 1601, memory 1602, at least one network interface 1604, and a user interface 1603. The various components in user terminal 1600 are coupled together by a bus system 1605. It is understood that the bus system 1605 is used to enable connected communication between these components. The bus system 1605 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled in figure 16 as bus system 1605.

The user interface 1603 may include, among other things, a display, a keyboard or a pointing device (e.g., a mouse, track ball, touch pad or touch screen, etc.).

It is to be understood that the memory 1602 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1602 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1602 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 16021 and application programs 16022.

The operating system 16021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application 16022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the present invention may be included within application 16022.

In the embodiment of the present invention, the processor 1601 is configured to, by calling a program or an instruction stored in the memory 1602, specifically, a program or an instruction stored in the application 16022:

The method disclosed by the above-mentioned embodiments of the present invention may be applied to the processor 1601 or implemented by the processor 1601. The processor 1601 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the method may be performed by hardware integrated logic circuits or instructions in software form in the processor 1601. The Processor 1601 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1602, and the processor 1601 reads information in the memory 1602, and performs the steps of the method in combination with hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Optionally, before the step of receiving the first DCI format information sent by the network side device, the processor 1601 is further configured to:

and receiving configuration information of each bandwidth segment sent by the network side equipment, wherein each bandwidth segment is obtained by dividing bandwidth resources of a carrier wave.

Optionally, the configuration information includes at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

Optionally, after the steps of determining the bandwidth segment to which the RB belongs according to the bandwidth segment indication and determining the position or sequence number of the RB in the bandwidth segment according to the resource allocation indication, the processor 1601 is further configured to:

It should be noted that, in this embodiment, the user terminal 1600 may be a user terminal in any implementation manner in the method embodiment of the present invention, and any implementation manner of the user terminal in the method embodiment of the present invention may be implemented by the user terminal 1600 in this embodiment, and the same beneficial effects are achieved, and details are not described here.

The embodiment of the present invention further provides a computer-readable storage medium, where a DCI format information transmission program is stored in the computer-readable storage medium, and the DCI format information transmission program, when executed by a processor, implements the steps of the DCI format information transmission method at the network side device side provided in the embodiment of the present invention.

The embodiment of the present invention further provides a computer-readable storage medium, where a DCI format information transmission program is stored in the computer-readable storage medium, and the DCI format information transmission program, when executed by a processor, implements the steps of the method for transmitting DCI format information at a user terminal according to the embodiment of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting downlink control information format (DCI format) information is characterized by comprising the following steps:

allocating a Resource Block (RB) for transmitting a demodulation reference signal (DMRS) sequence;

sending first DCI format information to a first user terminal, wherein the first DCI format information comprises a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used for indicating a bandwidth segment to which the RB belongs, and the resource allocation indication is used for indicating a position or a sequence number of the RB in the bandwidth segment;

the DMRS sequence is a DMRS sequence shared by the first user terminal and a second user terminal, the first user terminal is a user terminal supporting a broadband, and the second user terminal is a user terminal supporting a narrow band;

after the step of allocating resource blocks, RBs, for transmitting DMRS sequences, the method further comprises:

2. The method of claim 1, wherein prior to the step of sending the first DCI format information to the first user terminal, the method further comprises:

3. The method of claim 2, wherein the configuration information comprises at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

4. The method of claim 2, wherein each bandwidth segment within the carrier has a uniform subcarrier spacing.

5. The method of claim 1, wherein prior to the step of sending the first DCI format information to the first user terminal, the method further comprises:

6. The method of claim 5, wherein the generating the DMRS sequence according to the subcarrier spacing of the RB comprises:

7. The method of claim 6, wherein the generating the DMRS sequence according to the number of RBs that can be supported at most in downlink corresponding to the subcarrier spacing of the RBs comprises:

8. The method of claim 6, wherein the number of RBs that can be supported at most in downlink corresponding to the subcarrier spacing of the RBs is obtained by dividing the number of RBs that can be supported at most in downlink in a preset carrier by 2^kThe obtained operation result, wherein, 2^kThe calculation result is obtained by dividing the subcarrier interval of the RB by the preset lowest subcarrier interval in the carriers.

9. The method of claim 5, wherein after the step of generating the DMRS sequence according to the subcarrier spacing of the RB, the method further comprises:

10. The method of claim 9, wherein the target DMRS sequence segment is a sequence element of the DMRS sequence that corresponds to an RB used by the bandwidth segment in transmission.

11. A method for transmitting DCI format information is applied to a first user terminal, and is characterized by comprising the following steps:

determining a bandwidth segment to which the RB belongs according to the bandwidth segment indication, and determining the position or sequence number of the RB in the bandwidth segment according to the resource allocation indication;

the DMRS sequence is a DMRS sequence shared by the first user terminal and the second user terminal, the first user terminal is a user terminal supporting a broadband, and the second user terminal is a user terminal supporting a narrowband.

12. The method of claim 11, wherein before the step of receiving the first DCI format information sent by the network-side device, the method further comprises:

13. The method of claim 12, wherein the configuration information comprises at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

14. The method of claim 12, wherein each bandwidth segment within the carrier has a uniform subcarrier spacing.

15. The method of claim 11, wherein the DMRS sequence is a DMRS sequence generated according to a subcarrier spacing of the RB.

16. The method of claim 15, wherein the DMRS sequence is a DMRS sequence generated according to a number of RBs that can be supported most downlink and corresponding to a subcarrier spacing of the RB and a number of REs used for transmission of the DMRS sequence within the RB.

17. The method of claim 16, wherein the DMRS sequence is an operation result obtained by generating a pseudo-random sequence according to the number of RBs that can be supported at most by downlink corresponding to a subcarrier interval of the RB, and performing an operation on the pseudo-random sequence.

18. The method of claim 16, wherein the number of RBs supported by the largest downlink power corresponding to the subcarrier spacing of the RBs is obtained by dividing the number of RBs supported by the largest downlink power within a predetermined carrier by 2^kThe obtained operation result, wherein, 2^kThe calculation result is obtained by dividing the subcarrier interval of the RB by the preset lowest subcarrier interval in the carriers.

19. The method of claim 15, wherein after the steps of determining a bandwidth segment to which the RB belongs according to the bandwidth segment indication and determining a location or sequence number of the RB in the bandwidth segment according to the resource allocation indication, the method further comprises:

20. The method of claim 19, wherein the target DMRS sequence segment is a sequence element of the DMRS sequence that corresponds to an RB used by the bandwidth segment in transmission.

21. A network-side device, comprising:

a first sending module, configured to send first DCI format information to a first user terminal, where the first DCI format information includes a bandwidth segment indication and a resource allocation indication, the bandwidth segment indication is used to indicate a bandwidth segment to which the RB belongs, and the resource allocation indication is used to indicate a position or a sequence number of the RB in the bandwidth segment;

the network side device further includes:

a fourth sending module, configured to send second DCI format information to the second user terminal, where the second DCI format information includes a resource allocation indication used to indicate a position or a sequence number of the RB in a bandwidth resource of a carrier.

22. The network-side device of claim 21, wherein the network-side device further comprises:

a dividing module, configured to divide bandwidth resources of a carrier into multiple bandwidth segments;

and a second sending module, configured to send configuration information of each bandwidth segment to the first user terminal.

23. The network-side device of claim 22, wherein the configuration information comprises at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

24. The network-side device of claim 22, wherein each bandwidth segment within the carrier has a uniform subcarrier spacing.

25. The network-side device of claim 21, wherein the network-side device further comprises:

and the generating module is used for generating the DMRS sequence according to the sub-carrier interval of the RB.

26. The network-side device of claim 25, wherein the generating module is specifically configured to generate the DMRS sequence according to the number of RBs that can be supported at most in a downlink and corresponding to the subcarrier spacing of the RB and the number of Resource Elements (REs) used for transmitting the DMRS sequence in the RB.

27. The network-side device of claim 26, wherein the generating module is specifically configured to generate a pseudo-random sequence according to a product of a number of RBs that can be supported most downlink and correspond to a subcarrier spacing of the RB and a number of Resource Elements (REs) used for transmitting a DMRS sequence within the RB, perform an operation on the pseudo-random sequence, and use an operation result as the DMRS sequence.

28. The network device of claim 26, wherein the number of RBs supported by the largest downlink power corresponding to the subcarrier spacing of the RBs is obtained by dividing the number of RBs supported by the largest downlink power within a preset carrier by 2^kThe obtained operation result, wherein, 2^kThe calculation result is obtained by dividing the subcarrier interval of the RB by the preset lowest subcarrier interval in the carriers.

29. The network-side device of claim 25, wherein the network-side device further comprises:

and a third sending module, configured to select a target DMRS sequence segment in the DMRS sequence according to a sequence number of a starting RB in a bandwidth resource of a carrier in a bandwidth segment to which the RB belongs and the number of RBs used by the bandwidth segment in transmission, and send the target DMRS sequence segment in the RB.

30. The network-side device of claim 29, wherein the target DMRS sequence segment is a sequence element of the DMRS sequence that corresponds to an RB used by the bandwidth segment in transmission.

31. A user terminal, the user terminal being a first user terminal, comprising:

a determining module, configured to determine a bandwidth segment to which the RB belongs according to the bandwidth segment indication, and determine a position or a sequence number of the RB in the bandwidth segment according to the resource allocation indication;

32. The user terminal of claim 31, wherein the user terminal further comprises:

a second receiving module, configured to receive configuration information of each bandwidth segment sent by the network side device, where each bandwidth segment is a bandwidth segment obtained by dividing bandwidth resources of a carrier.

33. The user terminal of claim 32, wherein the configuration information comprises at least one of:

frequency location, bandwidth, subcarrier spacing, and cell identification.

34. The user terminal of claim 32, wherein each bandwidth segment within the carrier has a uniform subcarrier spacing.

35. The user terminal of claim 31, wherein the DMRS sequence is a DMRS sequence generated according to a subcarrier spacing of the RB.

36. The user terminal of claim 35, wherein the DMRS sequence is a DMRS sequence generated according to the number of RBs that can be supported most downlink and corresponding to the subcarrier spacing of the RB and the number of REs used for transmitting the DMRS sequence within the RB.

37. The ue of claim 36, wherein the DMRS sequence is an operation result obtained by generating a pseudo-random sequence according to the number of RBs that can be supported by the downlink at most according to the subcarrier spacing of the RBs, and performing an operation on the pseudo-random sequence.

38. The UE of claim 36, wherein the number of RBs supportable at most in downlink corresponding to the sub-carrier spacing of the RBs is obtained by dividing the number of RBs supportable at most in downlink in a preset carrier by 2^kThe obtained operation result, wherein, 2^kThe calculation result is obtained by dividing the subcarrier interval of the RB by the preset lowest subcarrier interval in the carriers.

39. The user terminal of claim 35, wherein the user terminal further comprises:

and a third receiving module, configured to receive, at the RB, a target DMRS sequence segment sent by the network side device, where the target DMRS sequence segment is a target DMRS sequence segment selected in the DMRS sequence according to a sequence number of a starting RB in a bandwidth resource of a carrier in a bandwidth segment to which the RB belongs and the number of RBs used by the bandwidth segment in transmission.

40. The user terminal of claim 39, wherein the target DMRS sequence segment is a sequence element of the DMRS sequence that corresponds to an RB used by the bandwidth segment in transmission.

41. A network-side device, comprising: processor, memory, transceiver and user interface, coupled together by a bus system, for reading a program in the memory, performing the steps in the method of transmitting DCI format information according to any one of claims 1 to 10.

42. A user terminal, comprising: processor, memory, network interface and user interface, coupled together by a bus system, for reading a program in the memory, performing the steps in the method of transmitting DCI format information according to any one of claims 11 to 20.

43. A DCI format information transmission system, comprising the network side device according to any one of claims 21 to 30 and the user terminal according to any one of claims 31 to 40, or comprising the network side device according to claim 41 and the user terminal according to claim 42.

44. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a transmission program of DCI format information, which when executed by a processor implements the steps of the method for transmitting DCI format information according to any one of claims 1 to 10.

45. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a transmission program of DCI format information, which when executed by a processor implements the steps of the method for transmitting DCI format information according to any one of claims 11 to 20.