WO2019028744A1 - Resource allocation method, network device, and terminal device - Google Patents

Abstract

Provided in an embodiment of the present invention are a resource allocation method, a network device, and a terminal device. The method comprises: a network device transmitting, to a terminal device, random access response grant information or downlink control information, wherein the random access response grant information or the downlink control information comprises resource allocation information, the resource allocation information indicates a subcarrier of a physical uplink shared channel, and a quantity of the subcarrier is less than 12; and the network device receiving, from the terminal device, uplink information on the subcarrier of the physical uplink shared channel. The embodiment of the present invention can realize use of a subcarrier as a unit for resource allocation.

Description

Resource allocation method, network device and terminal device Technical field

The present application relates to the field of communications, and in particular, to a resource allocation method, a network device, and a terminal device.

Background technique

Machine Type Communication (MTC) refers to the acquisition of information about the physical world by deploying various devices with certain sensing, computing, execution, and communication capabilities, and realizes information transmission, coordination, and processing through the network. The interconnection of things, things and things. Currently, the versions of Long Term Evolution (LTE) (release, Rel)-12, Rel-13, Rel-14, and Rel-15 can support MTC services.

The resources of the LTE system are divided into subcarriers in the frequency domain and divided into subframes in time. A physical resource block (PRB) is 1 subframe in time, and 12 subcarriers are included in frequency when the subcarrier spacing is 15 kHz.

In the LTE Rel-13, the user equipment (UE) capable of supporting the MTC service is a Bandwidth-Reduced Low-complexity UE (BL UE) or a Cover Enhanced Enhancement UE (CE UE). The maximum transmit and receive bandwidth supported by the BL UE or CE UE is 1.4 MHz, including a narrow band. A narrow band contains a frequency width of six consecutive PRBs in frequency. LTE Rel-13 provides two coverage enhancement modes for CE UE, namely, coverage enhancement mode A (CE mode A) for smaller coverage enhancement degree and coverage enhancement mode B (CE mode for larger coverage enhancement degree). B).

In the LTE system, the random access procedure is divided into a contention-based random access procedure and a non-contention-based random access procedure. The contention-based random access process consists of the following four steps.

Step 1: Random access preamble (ie message (message, Msg) 1)

The UE sends a random access preamble to the base station through a Physical Random Access Channel (PRACH). The PRACH of the BL UE or the CE UE has four coverage enhancement levels, and the coverage enhancement levels are 0, 1, 2, and 3 from low to high. The base station notifies the UE in advance in the system information that the number of repetitions, the time-frequency resource used by the random access preamble, and the preamble group of the random access preamble sent by the UE are sent in each PRACH coverage enhancement level. The UE selects a PRACH coverage enhancement level, and selects a random access preamble in the random access preamble group corresponding to the level, and configures the time-frequency resource of the random access preamble configured by the base station according to the level configured by the base station. The number of repetitions is repeated for the random access preamble.

Step 2: Random Access Response (Msg 2)

After detecting the random access preamble sent by the UE, the base station sends a random access response (RAR) to the UE. Downlink control carried by the physical downlink shared channel (PDSCH) of the RAR and carried by the physical downlink control channel (MPDCCH) of the device type communication (Downlink Control) Information, DCI) to schedule the PDSCH. The Medium Access Control (MAC) Protocol Data Unit (PDU) of the RAR is composed of a MAC header and zero or more MAC RARs. A MAC header consists of one or more MAC subheaders. Uplink (UL) grants and other information are included in the MAC RAR. The UL grant physical layer is called random access response authorization (RAR grant) information. The random access response authorization information is used for initial transmission of the scheduling message 3 (Msg3), and indicates information such as resources allocated by the base station for Msg3 transmission.

Step 3: Message 3 (Msg 3)

After successfully receiving its own RAR, the UE sends a message 3 (ie, Msg3) in the random access procedure to the base station. The Msg3 is carried by a Physical Uplink Shared Channel (PUSCH). Msg3 uses Hybrid Automatic Repeat Request (HARQ) technology. The random access response grant (RAR grant) information in the RAR sent by the base station to the UE allocates frequency domain resources to the initially transmitted Msg3. Before the UE retransmits Msg3, the DCI sent by the base station to the UE allocates frequency domain resources to the retransmitted Msg3.

In a contention random access, multiple UEs simultaneously transmit the same preamble. In this case, different UEs may send Msg3 on the same time-frequency resource, thereby causing competition for Msg3 transmission.

Step 4: Competition Resolution Message (Msg 4)

If the base station successfully decodes the Msg3 of a certain UE, the UE sends a contention resolution message to the UE to solve the problem of competition of multiple UEs in the contention of the random access procedure. The UE receives the contention resolution message sent by the base station, and completes the random access procedure.

In the existing random access procedure, the RAR and the DCI allocate the frequency domain resources used by the MSCH3 carried by the PUSCH transmitted by the UE. In Rel-14 and its previous versions, the smallest unit for resource allocation to the PUSCH of a BL UE or CE UE is the PRB. In order to improve the spectrum efficiency of the PUSCH, resource allocation in units of subcarriers is one of the effective technical means that may be employed. However, in the prior art, there is a lack of a scheme for resource allocation in units of subcarriers.

Summary of the invention

The embodiments of the present invention provide a resource allocation method, a network device, and a terminal device, so as to implement resource allocation in units of subcarriers.

In a first aspect, a resource allocation method is provided. The network device sends the random access response authorization information and/or the downlink control information to the terminal device, where the random access response authorization information and/or the downlink control information includes resource allocation information; the resource allocation information is used to indicate The subcarriers of the physical uplink shared channel, the number of the subcarriers is less than 12; the network device receives the uplink information from the terminal device on the subcarriers of the physical uplink shared channel.

In the embodiment of the present invention, the random access response authorization information and/or the downlink control information that the network device sends to the terminal device includes resource allocation information, where the resource allocation information is not used to indicate a PRB of the physical uplink shared channel, but is used to indicate The subcarriers of the physical uplink shared channel, the number of the subcarriers is less than 12; the subsequent network device receives the uplink information from the terminal device on the subcarriers of the physical uplink shared channel, thereby enabling resource allocation in units of subcarriers. Correspondingly, the spectrum efficiency of the physical uplink shared channel is improved.

In a possible implementation manner, the network device sends the random access response authorization information to the terminal device and/or Or before the downlink control information; the network device determines that the coverage enhancement level of the physical random access channel carrying the random access preamble sent by the terminal device is level 2 or 3. According to this embodiment, the coverage enhancement level is level 2 or 3 represents a higher coverage enhancement level. In this case, the requirement for improving the spectrum efficiency of the physical uplink shared channel is more prominent, so resource allocation is performed in units of subcarriers, otherwise PRB is used. The unit allocates resources so that units that flexibly select resource allocation according to actual needs can be realized.

In a possible implementation manner, before the network device sends the random access response authorization information and/or the downlink control information to the terminal device, the network device determines the physical random access used by the terminal device to send the random access preamble. The channel resource belongs to the first resource, and the first resource includes one or more of the first time resource, the first frequency resource, and the first random access preamble. According to the implementation manner, the network device may determine, by using the physical random access channel resource used by the random access preamble, the terminal device whether the terminal device has the capability of supporting uplink resource allocation in units of subcarriers, thereby implementing the The ability of the device to flexibly select the unit of resource allocation.

In a possible implementation, the network device sends a random access response to the terminal device, where the random access response includes the random access response authorization information; the MAC PDU of the random access response The downlink control information further includes indication information, where the indication information is used to indicate that the resource allocation information is used to indicate a subcarrier of a physical uplink shared channel. According to this embodiment, the network device can indicate the unit of resource allocation by the indication information, thereby enabling the terminal device to interpret the resource allocation information in a correct manner.

In a second aspect, a resource allocation method is provided. The terminal device receives random access response authorization information and/or downlink control information from the network device, where the random access response authorization information and/or the downlink control information includes resource allocation information; the resource allocation information is used to indicate a subcarrier of a physical uplink shared channel, where the number of the subcarriers is less than 12; the terminal device determines, according to the resource allocation information, a subcarrier of a physical uplink shared channel, where the number of the subcarriers is less than 12; The device sends uplink information to the network device on the subcarrier.

In the embodiment of the present invention, the random access response authorization information and/or the downlink control information received by the terminal device from the network device includes resource allocation information, where the resource allocation information is not used to indicate a PRB of the physical uplink shared channel, but is used to indicate The subcarriers of the physical uplink shared channel, the number of the subcarriers is less than 12; the subsequent terminal device determines the subcarriers of the physical uplink shared channel according to the resource allocation information, where the number of the subcarriers is less than 12; The uplink information is sent to the network device on the subcarrier, so that resource allocation in units of subcarriers can be implemented, and the spectrum efficiency of the physical uplink shared channel is correspondingly improved.

In a possible implementation manner, before the terminal device receives the random access response authorization information and/or the downlink control information from the network device, the terminal device sends a random access preamble to the network device, where The coverage enhancement level of the random access preamble physical random access channel is level 2 or 3. According to this embodiment, the coverage enhancement level is level 2 or 3 represents a higher coverage enhancement level. At this time, the requirement for the terminal device to improve the spectrum efficiency of the physical uplink shared channel is more prominent, so the network device is instructed to allocate resources in units of subcarriers. Otherwise, resource allocation is performed in units of PRBs, thereby enabling flexible selection of units for resource allocation according to actual needs.

In a possible implementation manner, before the terminal device receives the random access response authorization information and/or the downlink control information from the network device, the terminal device sends a random access preamble to the network device, where the random access The physical random access channel resource used by the access preamble belongs to the first resource, and the first resource includes the first resource. One or more of a time resource, a first frequency resource, and a first random access preamble. According to this embodiment, the terminal device can inform the network device whether the terminal device has the capability of supporting uplink resource allocation in units of subcarriers by using a physical random access channel resource used by the random access preamble transmitted to the network device, thereby The network device is capable of flexibly selecting a unit of resource allocation according to the capabilities of the terminal device.

In a possible implementation, the terminal device receives a random access response from the network device, where the random access response includes the random access response authorization information, and the terminal device allocates information according to the resource Before determining the subcarrier of the physical uplink shared channel, the terminal device acquires the MAC PDU of the random access response and/or the indication information included in the downlink control information, and determines, according to the indication information, that the resource allocation information is used for A subcarrier indicating a physical uplink shared channel. According to this embodiment, the terminal device can identify the unit of resource allocation by the indication information, thereby enabling the terminal device to interpret the resource allocation information in a correct manner.

With reference to the method of the first aspect or the second aspect, in a possible implementation, the resource allocation information includes a first field, the first field has a length of 3 bits, and the first field is used to And indicating a first PRB in the first narrowband and a subcarrier of the physical uplink shared channel in the first PRB, where the number of the subcarriers is less than 12. According to this embodiment, the indication information of the three bits can not only indicate the subcarrier of the physical uplink shared channel, but also indicate the PRB where the subcarrier is located, and the indication information of the normal 3 bits can only indicate the physical uplink sharing. Compared with the PRB of the channel, the resource allocation at the subcarrier level can be realized without adding extra bit overhead, which is conducive to saving transmission resources.

With the method of the first aspect or the second aspect, in a possible implementation, the resource allocation information included in the random access response authorization information further includes a second field, where the length of the second field is two Bit, the second field is used to indicate the first narrow band. According to this embodiment, the indication information of 2 bits can indicate the narrow band where the subcarriers of the physical uplink shared channel are located, thereby being able to indicate the frequency position of the subcarriers in the system bandwidth.

With reference to the method of the first aspect or the second aspect, in a possible implementation, the resource allocation information included in the downlink control information further includes a second field, where the length of the second field is

a second bit, the second field is used to indicate the first narrow band; wherein

Indicates the number of PRBs included in the upstream system bandwidth. According to this embodiment,

The indication information of the bits can indicate a narrow band in which the subcarriers of the physical uplink shared channel are located, thereby being able to indicate the frequency position of the subcarriers in the system bandwidth.

With reference to the method of the first aspect or the second aspect, in a possible implementation, each of the values of the first field indicates that the subcarriers are all 3 subcarriers; or, each of the first fields The subcarriers indicated by the value are all 6 subcarriers; or the subcarrier indicated by the first value of the first field is 3 subcarriers, and the subcarrier indicated by the second value of the first field is 6 subcarriers. Carrier. According to this embodiment, three subcarriers or six subcarriers can be realized by one value of three bits. Since one PRB includes 12 subcarriers, 3 and 6 are divisors of 12, and 3 is about 6 Therefore, the subcarrier indicated by the different values of 3 bits has multiple possible positions in the PRB, thereby enabling flexible resource allocation. Moreover, the subcarriers that are instructed are not overlapped, and the indicated subcarriers cover 12 subcarriers included in one PRB, and there is no problem that the subcarriers are not wasted due to the inability to indicate a certain subcarrier, and the implementation manner is reasonable.

With reference to the method of the first aspect or the second aspect, in a possible implementation manner, the three subcarriers are The subcarrier index in the first PRB is 0, 1, 2, or 3, 4, 5, or 6, 7, 8, or 9, 10, 11; and/or, the 6 subcarriers are in the The subcarrier index within the first PRB is 0, 1, 2, 3, 4, 5, or 6, 7, 8, 9, 10, 11. According to this embodiment, the subcarriers indicated by the different values of 3 bits have multiple possible positions in the PRB, thereby enabling flexible resource allocation. Moreover, the subcarriers that are instructed are not overlapped, and the indicated subcarriers cover 12 subcarriers included in one PRB, and there is no problem that the subcarriers are not wasted due to the inability to indicate a certain subcarrier, and the implementation manner is reasonable.

In combination with the method of the first aspect or the second aspect, in a possible implementation manner, the PRB index of the first PRB in the first narrowband is 4 or 5. According to this embodiment, in the normal resource allocation method, when two PRBs are allocated, the PRB indexes of the two PRBs in the narrowband are 0, 1, or 2, and 3, so that the first PRB is in the first narrowband. The PRB index is 4 or 5, and the PRB index of the 2 PRBs can be avoided as much as possible, and the resource allocation of the physical uplink shared channel with the subcarrier as the minimum unit can be avoided. Impact.

With reference to the method of the first aspect or the second aspect, in a possible implementation, the eight values of the first field indicate the PRB index of the first PRB in the first narrowband and the The subcarrier index of the subcarrier in the first PRB includes the following correspondence:

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5. The subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8; the PRB index is 4. The subcarrier index is 9, 10, 11; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 6, 7, 8; the PRB index is 5. The subcarrier index is 9, 10, 11; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5. The subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8, 9, 10, 11; the PRB index is 5, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 3, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, the subcarrier index 6, 7, 8; PRB index is 4, subcarrier index is 9, 10, 11; PRB index is 5, subcarrier index is 6, 7, 8; PRB index is 5, subcarrier index is 9, 10, 11; PRB index is 3, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 3, sub The carrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8; the PRB index is 4. The subcarrier index is 9, 10, 11; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5, the subcarrier index is 3, 4, 5; the PRB index is 5, and the subcarrier index is 6. , 7, 8; PRB index is 5, subcarrier index is 9, 10, 11; or

The PRB index is 2, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 2, the subcarrier index is 6, 7, 8, 9, 10, 11; the PRB index is 3, the subcarrier index 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 4, subcarrier index is 0, 1, 2, 3 4, 5; PRB index is 4, subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5. The subcarrier index is 6, 7, 8, 9, 10, 11.

According to this embodiment, the eight values of the first field correspond to the indicated PRB index of the first PRB in the first narrowband and the subcarrier index of the subcarrier in the first PRB. A variety of optional correspondences, flexible implementation.

With reference to the method of the first aspect or the second aspect, in a possible implementation, the number of bits of the random access response authorization information is 12; and/or; in the downlink control information, except The number of bits other than the padding bits is

among them,

Indicates the number of physical resource blocks PRB included in the uplink system bandwidth; and/or, the format of the downlink control information is 6-0B. According to this embodiment, compared with the number of bits of the normal random access response grant information and the number of bits of the downlink control information, it is not necessary to add extra bits, and the transmission resources can be effectively saved.

With the method of the first aspect or the second aspect, in a possible implementation, the uplink information is after the network device receives the random access preamble sent by the terminal device, and the network device sends the And the information received before the contention message is sent by the terminal device; and/or the uplink information is message 3; and/or the uplink information is uplink data. According to this embodiment, multiple application scenarios of resource allocation are provided, and the application range is wide.

In another aspect, the embodiment of the present invention provides a communication device, which may be a network device, and the communication device may implement the functions performed in the foregoing method design of the first aspect, and the function may be implemented by hardware, or The corresponding software implementation is performed by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the communication device includes a processor configured to support the device to perform the corresponding functions of the first aspect method described above. The communication device can also include a memory for coupling with the processor that retains the program instructions and data necessary for the device. The communication device can also include a communication interface for transmitting or receiving information and the like.

In a further aspect, the embodiment of the present invention provides a communication device, which may be a terminal device, and the communication device may implement the functions performed in the method design of the second aspect, and the function may be implemented by hardware or The corresponding software implementation is performed by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the communication device includes a processor configured to support the device to perform the corresponding functions of the first aspect method described above. The communication device can also include a memory for coupling with the processor that retains the program instructions and data necessary for the device. The communication device can also include A communication interface for transmitting or receiving information and the like.

In another aspect, an embodiment of the present invention provides a chip that can be disposed in a device, the chip including a processor and an interface. The processor is configured to support the chip to perform the corresponding functions of the first aspect method described above. This interface is used to support communication between the chip and other chips or other network elements. The chip can also include a memory for coupling with the processor that holds the necessary program instructions and data for the chip.

In another aspect, an embodiment of the present invention provides a chip that can be disposed in a device, the chip including a processor and an interface. The processor is configured to support the chip to perform the corresponding functions of the second aspect method described above. This interface is used to support communication between the chip and other chips or other network elements. The chip can also include a memory for coupling with the processor that holds the necessary program instructions and data for the chip.

In still another aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium stores instructions, when executed on a computer, causing the computer to perform any of the foregoing first aspect or the first aspect. The method described in the design.

In still another aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium stores instructions, when executed on a computer, causing the computer to perform any of the foregoing second aspect or the second aspect. The method described in the design.

In still another aspect, an embodiment of the present invention provides a computer program product, comprising instructions that, when executed by a computer, cause the computer to perform any one of the first aspect or the first aspect of the first aspect The method described in the above.

In still another aspect, an embodiment of the present invention provides a computer program product, comprising instructions, when executed by a computer, causing a computer to perform any one of the foregoing second aspect or the second aspect of the possible design The method described in the above.

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario of a resource allocation method according to an embodiment of the present disclosure;

2 is a schematic diagram of a PRB allocation manner of a general DCI format 6-0B;

3 is a schematic diagram of communication of a resource allocation method according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of another terminal device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another network device according to an embodiment of the present invention.

Detailed ways

FIG. 1 is a schematic diagram of an application scenario of a resource allocation method according to an embodiment of the present invention. It is to be understood that the application scenario is only for illustration and is not used to limit the application scenario of the embodiment of the present invention. The embodiment of the present invention may be applied to an LTE system or an evolved system, and the embodiment of the present invention may also be applied to other communications. system. In a typical application scenario, an entity in the communication system needs to perform random access. The entity needs to send uplink information in the random access process, and another entity needs to receive uplink information. The uplink information may be Msg3 or uplink data.

As shown in FIG. 1, a base station and UE1 to UE6 form a communication system in which the communication system The UE1 to the UE6 need to perform random access, and need to send uplink information to the base station; the base station needs to receive uplink information sent by the UE in the UE1 to the UE6. In addition, the UE4 and the UE6 may also form a communication system. In the communication system, the UE4 and the UE6 need to perform random access, and need to send uplink information to the UE5. The UE5 needs to receive uplink information sent by the UE in the UE4 and the UE6.

In this embodiment of the present invention, an entity that sends uplink information may be referred to as a terminal device, and the terminal device may be, but not limited to, a UE, and the UE may be any user equipment, for example, the UE is a UE that performs MTC service, a BL UE, or a CE. The UE or the like is referred to as a network device, and the network device may be, but not limited to, a base station, which is an entity on the network side for transmitting or receiving signals.

In the embodiment of the present invention, when the description is made, the terminal device is generally used as the UE, and the network device is the base station as an example. In the embodiment of the present invention, the number of PRBs included in the physical uplink shared channel bandwidth supported by the terminal device may be greater than one, or may be equal to one.

Generally, network devices allocate resources of PUSCH in units of PRBs. The PUSCH is used to carry the uplink information. The embodiment of the present invention solves the problem of how the RAR grant and the DCI indicate the allocated subcarriers when the resource allocation of the PUSCH carrying the uplink information is performed in units of subcarriers. The uplink information may be information received after the network device receives the random access preamble sent by the terminal device and before the network device sends a contention resolution message to the terminal device, that is, an uplink in a random access process. information. The uplink information may be Msg3. The uplink information may be uplink data. The method or device for indicating the allocated subcarriers by using the RAR grant and the DCI in the embodiment of the present invention may be applied to the resource of the PUSCH carrying the uplink information in the random access procedure, or may be applied to the bearer random connection. The resource of the PUSCH of the uplink information other than the procedure is instructed. The method or device for indicating the allocated subcarriers by using the RAR grant and the DCI in the embodiment of the present invention may also be applied to indicate resources of other physical uplink shared channels that carry uplink information. Therefore, the UE can concentrate the transmission power on a smaller bandwidth to improve the spectrum efficiency of transmitting uplink information.

It has been studied that for BL UE or CE UE, the bits of the RAR grant have two interpretation modes. If the UE selects the PRACH coverage enhancement level 0 or 1 to send the random access preamble, the base station sends the RAR grant according to the CE mode A, and the UE interprets the RAR grant according to the CE mode A. If the UE selects the PRACH coverage enhancement level 2 or 3 to send the random access preamble, the base station sends the RAR grant according to the mode of the CE mode B, and the UE interprets the RAR grant according to the mode of the CE mode B. In these two modes, the information and the number of bits included in the RAR grant are shown in the following table. among them,

The lower corner NB represents a narrow band.

Indicates the number of PRBs included in the uplink system bandwidth on the frequency, where the lower RB is the shorthand of the PRB and the upper horn UL represents the uplink. The frequency range of the system bandwidth contains one or more narrowbands. N _NB represents the number of narrow bands included in the frequency range of the system bandwidth.

Represents the number of bits required to indicate a narrow band within the system bandwidth.

Means rounding down,

Indicates an up rounding operation.

Table I

Referring to Table 1, the Msg3 PUSCH resource allocation is used to allocate the PRBs used in the narrowband of the PUSCH carrying the Msg3. In CE mode B, the Msg3 PUSCH resource is allocated as 3 bits. The six PRBs included in a narrow band on the frequency are numbered in frequency ascending order from 0 to 5, that is, the PRB index in the narrow band. The 3-bit indicates the PRB index of the allocated PRB in the narrowband as shown in Table 2. It should be noted that, in the embodiment of the present invention, six PRBs included in a narrow band on the frequency may be numbered in the frequency descending order by frequency from 0 to 5 to obtain a PRB index in the narrow band.

Bit value	PRB index in narrowband
‘000’	0
‘001’	1
‘010’	2
‘011’	3
‘100’	4
‘101’	5
‘110’	0 and 1
‘111’	2 and 3

Table II

In CE mode B, in the first subframe of Msg3 transmission, the narrowband of the PUSCH carrying Msg3 is indicated by 2 bits of the narrowband index of the Msg3 PUSCH. The narrowband included in the frequency range of the system bandwidth is numbered in frequency ascending order, which is a narrowband index. The narrowband index indicated by 2 bits is shown in Table 3. The NB _RAR represents a narrowband index used by the DCI that schedules the RAR in the first subframe in which the transmission is performed. In other subframes transmitted by the Msg3, the narrowband in which the PUSCH carrying the Msg3 is located is determined according to the frequency hopping mode of the Msg3. Table 3 shows the narrowband of the narrowband index indication of CE mode B Msg3 PUSCH. It should be noted that the narrowband included in the frequency range of the system bandwidth may also be numbered in frequency descending order in frequency to obtain a narrowband index.

Msg3 PUSCH narrowband index bit value	Nssband index of Msg3 PUSCH
'00'	NB RAR mod N NB
'01'	(NB RAR +1) mod N NB
'10'	(NB RAR +2) mod N NB
'11'	(NB RAR +3) mod N NB

Table 3

The frequency domain resources used by the retransmitted Msg3 are indicated by DCI. For BL UE or CE UE, the DCI used to schedule the PUSCH has two formats, 6-0A and 6-0B. For the retransmitted Msg3, if the UE selects the PRACH coverage enhancement level 0 or 1 to send the random access preamble, the DCI format 6-0A is adopted; if the UE selects the PRACH coverage enhancement level 2 or 3 to send the random access preamble, the UE adopts DCI format 6-0B. DCI format 6-0B contains

The bit is used for resource block allocation of the PUSCH, and the PRB is allocated in the manner as shown in FIG. 2.

Referring to Figure 2, DCI format 6-0B is adopted.

The bits indicate a narrowband narrowband index allocated in the system bandwidth, and the last 3 bits are used to indicate the PRB allocated within the allocated narrowband. For the allocation of PRBs within the allocated narrowband, the PRB index within the narrowband indicated by 3 bits is the same as Table 2.

Through the above analysis, the allocation of the frequency resources occupied by the original RAR grant to the initially transmitted Msg3, and the allocation of the frequency resources occupied by the retransmitted Msg3 by the existing DCI format 6-0B, the minimum unit of resource allocation is 1 PRB. Resource allocation in subcarrier units cannot be supported. The minimum unit of resources occupied by Msg3 transmission is 1 PRB, and the spectrum efficiency of Msg3 transmission still has room for improvement.

FIG. 3 is a schematic diagram of a resource allocation method according to an embodiment of the present invention. The method may be based on the application scenario shown in FIG.

Step 301: The network device sends random access response authorization information and/or downlink control information to the terminal device, where the random access response authorization information and/or the downlink control information includes resource allocation information, and the resource allocation information. A subcarrier for indicating a physical uplink shared channel, where the number of subcarriers is less than 12.

Correspondingly, the terminal device receives random access response authorization information and/or downlink control information from the network device.

The subcarrier of the physical uplink shared channel refers to a subcarrier occupied by the physical uplink shared channel.

In an example, the resource allocation information includes a first field, the first field has a length of 3 bits, and the first field is used to indicate the first PRB and the first in the first narrowband The subcarriers of the physical uplink shared channel in the PRB, the number of the subcarriers is less than 12.

In an example, the resource allocation information included in the random access response authorization information further includes a second field, where the length of the second field is 2 bits, and the second field is used to indicate the first narrowband .

In an example, the resource allocation information included in the downlink control information further includes a second field, where the length of the second field is

a second bit, the second field is used to indicate the first narrow band; wherein

Indicates the number of PRBs included in the upstream system bandwidth.

In an example, the subcarriers indicated by each value of the first field are all 3 subcarriers; or, the subcarriers indicated by each value of the first field are all 6 subcarriers; The subcarrier indicated by the first value of the first field is 3 subcarriers, and the subcarrier indicated by the second value of the first field is 6 subcarriers.

In one example, the subcarrier indices of the three subcarriers in the first PRB are 0, 1, 2, or 3, 4, 5, or 6, 7, 8, or 9, 10, 11; Or, the subcarrier index of the 6 subcarriers in the first PRB is 0, 1, 2, 3, 4, 5, or 6, 7, 8, 9, 10, 11.

In one example, the PRB index of the first PRB within the first narrowband is 4 or 5.

In an example, the eight PRB indexes of the first PRB indicated by the first field in the first narrowband and the subcarrier index of the subcarrier in the first PRB are as follows Correspondence:

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, and the subcarrier index is 3, 4, 5; PRB index is 5, subcarrier index is 0, 1, 2; PRB index is 5, subcarrier index is 3, 4, 5; PRB index is 4, subcarrier index is 0, 1, 2, 3, 4, 5 ; PRB index is 4, subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier The index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8; the PRB index is 4. The subcarrier index is 9, 10, 11; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 6, 7, 8; the PRB index is 5. The subcarrier index is 9, 10, 11; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5. The subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8, 9, 10, 11; the PRB index is 5, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 3, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, the subcarrier index 6, 7, 8; PRB index is 4, subcarrier index is 9, 10, 11; PRB index is 5, subcarrier index is 6, 7, 8; PRB index is 5, subcarrier index is 9, 10, 11; PRB index is 3, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11; or

The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8; the PRB index is 4. The subcarrier index is 9, 10, 11; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5, the subcarrier index is 3, 4, 5; the PRB index is 5, and the subcarrier index is 6. , 7, 8; PRB index is 5, subcarrier index is 9, 10, 11; or

The PRB index is 2, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 2, the subcarrier index is 6, 7, 8, 9, 10, 11; the PRB index is 3, the subcarrier index 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 4, subcarrier index is 0, 1, 2, 3 4, 5; PRB index is 4, subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5. The subcarrier index is 6, 7, 8, 9, 10, 11.

In one example, the number of bits of the random access response grant information is 12; and/or, in the downlink control information, the number of bits other than the existing padding bits is

among them,

Indicates the number of PRBs included in the uplink system bandwidth; and/or, the format of the downlink control information is 6-0B.

In the downlink control information, padding bits may or may not be included. The padding bit is used to expand the number of bits included in the downlink control information, so that the number of bits included in the downlink control information reaches a target value. The downlink control information includes padding bits, the presence of padding bits The number is greater than 0. When the downlink control information does not include padding bits, the number of the padding bits that exist is 0. When the downlink control information does not include a padding bit, in the downlink control information, the bit other than the existing padding bit is a bit included in the downlink control information.

In one example, the uplink information is information received after the network device receives the random access preamble sent by the terminal device and before the network device sends a contention resolution message to the terminal device; and/or, The uplink information is message 3; and/or the uplink information is uplink data.

Step 302: The terminal device determines, according to the resource allocation information, a subcarrier of a physical uplink shared channel, where the number of the subcarriers is less than 12.

Step 303: The terminal device sends uplink information to the network device on the subcarrier.

Correspondingly, the network device receives the uplink information sent by the terminal device on the subcarrier of the physical uplink shared channel.

The resource allocation mode in the unit of the sub-carriers provided by the embodiment of the present invention may coexist with the resource allocation mode in the unit of the PRB, and the method may be performed in the embodiment of the present invention. First determine which resource allocation method to use.

In one example, prior to step 301, the terminal device transmits a random access preamble to the network device, wherein the coverage enhancement level of the physical random access channel carrying the random access preamble is level 2 or 3. Correspondingly, the network device determines that the coverage enhancement level of the physical random access channel carrying the random access preamble sent by the terminal device is level 2 or 3. That is, the network device selects a corresponding resource allocation manner according to the coverage enhancement level of the physical random access channel that carries the random access preamble sent by the terminal device. When the network device determines that the coverage enhancement level of the physical random access channel carrying the random access preamble sent by the terminal device is level 2 or 3, the resource allocation manner in units of subcarriers may be selected. Alternatively, when the network device determines that the coverage enhancement level of the physical random access channel carrying the random access preamble sent by the terminal device is level 0 or 1, the resource allocation manner in units of PRB is selected.

In another example, before step 301, the terminal device sends a random access preamble to the network device, where the physical random access channel resource used by the random access preamble belongs to the first resource, and the first resource includes One or more of the first time resource, the first frequency resource, and the first random access preamble. Correspondingly, the network device determines that the physical random access channel resource used by the terminal device to send the random access preamble belongs to the first resource, where the first resource includes the first time resource, the first frequency resource, and the first random One or more of the access preambles. That is, the network device selects a corresponding resource allocation manner according to the physical random access channel resource used by the terminal device to send a random access preamble. When the network device determines that the physical random access channel resource used by the terminal device to send the random access preamble belongs to the first resource, the resource allocation manner performed in units of subcarriers may be selected. Alternatively, when the network device determines that the physical random access channel resource used by the terminal device to send the random access preamble does not belong to the first resource, the resource allocation manner performed in units of PRB is selected. The terminal device indicates whether the terminal device has the capability of supporting resource allocation in units of subcarriers by randomly accessing the physical random access channel resources used by the preamble. When the terminal has the capability of supporting resource allocation in units of subcarriers, the physical random access channel resource used by the random access preamble transmitted by the terminal device to the network device belongs to the first resource. When the terminal does not have the capability of supporting resource allocation in units of subcarriers, the physical random access channel resource used by the random access preamble transmitted by the terminal device to the network device does not belong to the first resource. Correspondingly, the network device determines, according to the physical random access channel resource used by the terminal device to send the random access preamble, whether the terminal device has the capability of supporting resource allocation in units of subcarriers. when When the network device determines that the physical random access channel resource used by the terminal device to send the random access preamble belongs to the first resource, the network determines that the terminal device has the capability of supporting resource allocation in units of subcarriers. When the network device determines that the physical random access channel resource used by the terminal device to transmit the random access preamble does not belong to the first resource, the network determines that the terminal device does not have the capability of supporting resource allocation in units of subcarriers.

In another example, the network device sends a random access response to the terminal device, the random access response including the random access response grant information; the MAC PDU of the random access response and/or the downlink The control information further includes indication information, where the indication information is used to indicate that the resource allocation information is used to indicate a subcarrier of a physical uplink shared channel. That is to say, the network device can select the resource allocation manner in units of subcarriers or the resource allocation manner in units of PRBs regardless of the capabilities of the terminal device, and indicate the resource allocation manner by using the indication information. Correspondingly, the terminal device receives a random access response from the network device, where the random access response includes the random access response authorization information; and the terminal device acquires the MAC PDU of the random access response and/or Or the indication information included in the downlink control information, determining, according to the indication information, that the resource allocation information is used to indicate a subcarrier of a physical uplink shared channel; and determining, by the terminal device, the physical uplink shared channel according to the resource allocation information. Subcarrier. The indication information may be, but is not limited to, 1 bit. One way in which the MAC PDU of the random access response includes the indication information is that the first bit of the MAC RAR is used as the indication information. Another way in which the MAC PDU of the random access response includes the indication information is that one or more of the 28th to 32th bits of the MAC RAR are used as the indication information. Another manner of the MAC PDU of the random access response including the indication information is that the indication information is included in a MAC sub-header of the random access response.

In the embodiment of the present invention, the random access response authorization information and/or the downlink control information that the network device sends to the terminal device includes resource allocation information, where the resource allocation information is not used to indicate a PRB of the physical uplink shared channel, but is used to indicate The subcarriers of the physical uplink shared channel, the number of the subcarriers is less than 12; the subsequent network device receives the uplink information sent by the terminal device on the subcarriers of the physical uplink shared channel, so that the subcarriers can be implemented. Resource allocation increases the spectral efficiency of the physical uplink shared channel accordingly.

The random access response authorization information in the embodiment of the present invention may be an RAR grant. The physical uplink shared channel may be a PUSCH or other physical uplink shared channel. For example, the physical uplink shared channel is a Narrowband Physical Uplink Shared Channel (NPUSCH).

The resource allocation method provided by the embodiment of the present invention may be applied to the allocation of the frequency domain resources occupied by the PUSCH by the RAR grant, and may also be applied to the allocation of the frequency domain resources occupied by the PUSCH by the DCI.

The resource allocation method provided by the embodiment of the present invention is described below for the specific application scenario in which the RAR grant allocates the frequency domain resources occupied by the PUSCH.

When applied to the allocation of the frequency domain resources occupied by the PUSCH by the RAR grant, the PUSCH may be used to carry the Msg3, and may also be used to carry other uplink data. The frequency domain resource of the PUSCH allocated by the RAR grant can be applied to the initially transmitted Msg3. The RAR grant is information contained in the RAR.

The frequency domain resource occupied by the PUSCH allocated by the RAR grant is 3 subcarriers or 6 subcarriers. The 12 subcarriers included in one frequency of one PRB are numbered 0-11 on the frequency, that is, the subcarrier index in the PRB. In the embodiment of the present invention, the numbering on the frequency may be performed in ascending order of frequency, or may be performed in descending order of frequency. The subcarrier index of the PUSCH allocated by the RAR grant occupying 3 subcarriers in the PRB may be one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11. PUSCH allocated by the RAR grant The subcarrier index occupying 6 subcarriers in the PRB may be one of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11. The RAR grant includes 3 bits, and is used to indicate a subcarrier occupied by the PUSCH in a narrow band. The manner in which the narrowband is occupied by the PUSCH can be determined in a usual manner. The PRB index of the PRB occupied by the PUSCH is preferentially selected 4 or 5 in the narrowband.

In an indication manner, the 3-bit different value state may indicate 3 subcarriers occupied by the PUSCH in a narrow band, and may also indicate 6 subcarriers. The 8-bit 8-valued indication of the sub-carrier may be, but is not limited to, an 8-seed carrier in any of Tables 4, 5, 6, 6, or 8. Tables 4, 5, 6, 6, or 8 illustrate three sub-carriers of the eight-valued status indication, and the PRBs in which the sub-carriers and the sub-carriers are located in a narrow band. Correspondence of PRB indexes.

3-bit value status	PRB index in narrowband	Subcarrier index within PRB
000	4	0 1 2
001	4	3 4 5
010	5	0 1 2
011	5	3 4 5
100	4	0 1 2 3 4 5
101	4	6 7 8 9 10 11
110	5	0 1 2 3 4 5
111	5	6 7 8 9 10 11

Table 4

Referring to Table 4, 3 bits in the RAR grant indicate 3 subcarriers or 6 subcarriers.

3-bit value status	PRB index in narrowband	Subcarrier index within PRB
000	4	0 1 2
001	4	3 4 5
010	4	6 7 8
011	4	9 10 11
100	4	0 1 2 3 4 5
101	4	6 7 8 9 10 11
110	5	0 1 2 3 4 5
111	5	6 7 8 9 10 11

Table 5

Referring to Table 5, 3 bits in the RAR grant indicate 3 subcarriers or 6 subcarriers.

3-bit value status	PRB index in narrowband	Subcarrier index within PRB
000	5	0 1 2
001	5	3 4 5
010	5	6 7 8

011	5	9 10 11
100	4	0 1 2 3 4 5
101	4	6 7 8 9 10 11
110	5	0 1 2 3 4 5
111	5	6 7 8 9 10 11

Table 6

Referring to Table 6, 3 bits in the RAR grant indicate 3 subcarriers or 6 subcarriers.

3-bit value status	PRB index in narrowband	Subcarrier index within PRB
000	4	0 1 2
001	4	3 4 5
010	5	0 1 2
011	5	3 4 5
100	4	6 7 8 9 10 11
101	5	6 7 8 9 10 11
110	3	0 1 2 3 4 5
111	3	6 7 8 9 10 11

Table 7

Referring to Table 7, 3 bits in the RAR grant indicate 3 subcarriers or 6 subcarriers.

3-bit value status	PRB index in narrowband	Subcarrier index within PRB
000	4	0 1 2 3 4 5
001	5	0 1 2 3 4 5
010	4	6 7 8
011	4	9 10 11
100	5	6 7 8
101	5	9 10 11
110	3	0 1 2 3 4 5
111	3	6 7 8 9 10 11

Table eight

Referring to Table 8, 3 bits in the RAR grant indicate 3 subcarriers or 6 subcarriers.

In another indication mode, the 3-bit different value status indicates 3 subcarriers occupied by the PUSCH in the narrow band. The indication of the subcarriers for the eight types of three-valued states may be, but is not limited to, eight of those in Table 9. Table 9 exemplifies the subcarriers of the 8-bit value state indications of 3 bits, and the correspondence relationship between the PRB indexes of the PRBs in which the subcarriers and the subcarriers are located in a narrow band.

3-bit value status	PRB index in narrowband	Subcarrier index within PRB
000	4	0 1 2
001	4	3 4 5
010	4	6 7 8
011	4	9 10 11
100	5	0 1 2
101	5	3 4 5
110	5	6 7 8
111	5	9 10 11

Table 9

Referring to Table IX, the 3 bits in the RAR grant indicate 3 subcarriers.

In another indication mode, the 3-bit different value status indicates 6 subcarriers occupied by the PUSCH in the narrow band. The indication of the subcarriers in the eight types of three values can be, but is not limited to, eight of those in Table 10. Table 10 exemplifies the subcarriers of the 8-bit value state indications of 3 bits, and the correspondence relationship between the PRB indexes of the PRBs in which the subcarriers and the subcarriers are located in a narrow band.

3-bit value status	PRB index in narrowband	Subcarrier index within PRB
000	2	0 1 2 3 4 5
001	2	6 7 8 9 10 11
010	3	0 1 2 3 4 5
011	3	6 7 8 9 10 11
100	4	0 1 2 3 4 5
101	4	6 7 8 9 10 11
110	5	0 1 2 3 4 5
111	5	6 7 8 9 10 11

Table ten

Referring to Table 10, the 3 bits in the RAR grant indicate 6 subcarriers.

Optionally, the number of bits included in the RAR grant is 12. Optionally, the information included in the RAR grant and the number of bits used for each information may be in a usual manner, that is, shown in Table 1.

In an example, if the UE selects the PRACH coverage enhancement level 2 or 3 to send the random access preamble, the RAR grant provided by the embodiment of the present invention is used to allocate the frequency domain resource occupied by the PUSCH, that is, the subcarrier is the minimum unit. The frequency domain resources occupied by the PUSCH are allocated.

In another example, the base station may allocate dedicated PRACH resources for UEs that support subcarrier level uplink resource allocation. The PRACH resource includes one or more of a time resource, a frequency resource, and a random access preamble. The UE supporting the subcarrier level uplink resource allocation refers to a UE that supports PUSCH resource allocation is <12 subcarriers. When the UE selects the dedicated PRACH resource to send a random access preamble, it indicates that the UE With the capability of supporting the sub-carrier-level uplink resource allocation, the base station may use the RAR grant according to the embodiment of the present invention to allocate the frequency domain resources occupied by the PUSCH to transmit the sub-carriers occupied by the RAR allocated PUSCH. When the UE does not select the dedicated PRACH resource to send a random access preamble, it indicates that the UE does not have the capability of supporting the subcarrier level uplink resource allocation, and the base station allocates the frequency domain resource occupied by the PUSCH according to the normal RAR grant. The RAR is allocated to allocate the PRB occupied by the PUSCH.

In another example, when transmitting the RAR, the base station may not know whether the UE has the capability of supporting the sub-carrier-level uplink resource allocation, so that the dedicated PRACH resource may be avoided for the UE supporting the sub-carrier-level uplink resource allocation. The base station may use the RAR grant selection in the RAR to allocate the frequency domain resources of the PUSCH with the PRB as a minimum unit or a subcarrier as a minimum unit. The base station may include indication information in the MAC PDU of the RAR, where the indication information is used to indicate whether the minimum unit of the frequency domain resource allocation occupied by the RSR grant for the PUSCH is a PRB or a subcarrier. One way in which the MAC PDU of the RAR includes the indication information is that the first bit of the MAC RAR is used as the indication information; and the other manner is one or more of the 28th to 32th bits of the MAC RAR. One bit is used as the indication information; the other way is that the indication information is included in the MAC subheader of the RAR. If the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocation occupied by the RSCH grant for the PUSCH is a subcarrier, and the UE has the capability of supporting the uplink resource allocation of the subcarrier level, the UE considers that the base station allocates the subcarrier for the PUSCH. The UE performs the frequency domain resource allocation manner occupied by the PUSCH according to the RAR grant of the embodiment of the present invention to interpret the RAR grant to determine the subcarrier occupied by the PUSCH. If the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocation of the RSR grant to the PUSCH is a subcarrier, and the UE does not have the capability of supporting the uplink resource allocation of the subcarrier level, the UE considers that the base station allocates the PRB for the PUSCH. The UE interprets the RAR grant according to the manner in which the normal RAR grant allocates the frequency domain resources occupied by the PUSCH to determine the PRB occupied by the PUSCH. When the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocation occupied by the RSR grant for the PUSCH is a subcarrier, the base station can blindly detect whether the PUSCH is sent according to the resource allocation manner with the subcarrier as the minimum unit, or according to the PRB. Sent for the smallest unit of resource allocation. If the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocation of the RSCH grant to the PUSCH is the PRB, the UE considers that the base station allocates the PRB for the PUSCH, and the UE uses the frequency domain resource occupied by the PUSCH according to the normal RAR grant. The allocation method interprets the RAR grant to determine the PRB occupied by the PUSCH.

In the embodiment of the present invention, the frequency domain resource occupied by the PUSCH allocated by the RAR grant is 3 subcarriers or 6 subcarriers, so that the UE can send the PUSCH on 3 or 6 subcarriers, so that the UE can concentrate the transmission power to a smaller bandwidth. On the other hand, the spectrum efficiency of PUSCH has been improved. Optionally, when the channel condition of the UE is poor, and the UE selects the PRACH coverage enhancement level 2 or 3 to send the random access preamble, the resource allocation of the PUSCH using the subcarrier as the minimum unit can improve the detection performance and spectrum efficiency of the PUSCH. And uplink capacity. When the frequency domain resource occupied by the PUSCH allocated by the RAR grant of the CE mode B is 2 PRBs, the PRB index of the 2 PRBs in the narrowband is 0, 1, or 2, 3, so that the PUSCH allocated by the RAR grant is occupied by the PUSCH. The PRB index in which the carrier is located is preferentially selected 4 or 5 in the narrowband PRB index, and the impact of the resource allocation of the PUSCH in which the subcarrier is the minimum unit on the existing PUSCH to which the two PRBs are allocated can be avoided. In the embodiment of the present invention, when the resource allocation of the PUSCH in the minimum unit of the subcarrier is implemented, the RAR grant size of the RAR grant of the CE mode B can be used, and the bit cost of the RAR can be saved. To ensure the detection performance of RAR.

The resource allocation method provided by the embodiment of the present invention is described below for the specific application scenario in which the DCI allocates the frequency domain resources occupied by the PUSCH.

When applied to the allocation of the frequency domain resources occupied by the PUSCH by the DCI, the PUSCH may be used to carry the Msg3, and may also be used to carry other uplink data. The frequency domain resource of the PUSCH allocated by the DCI can be applied to the retransmitted Msg3.

Similar to the specific application scenario in which the RAR grant allocates the frequency domain resources occupied by the PUSCH, in the specific application scenario in which the DCI allocates the frequency domain resources occupied by the PUSCH, the frequency domain resource occupied by the PUSCH allocated by the DCI is 3 Subcarriers or 6 subcarriers. The DCI includes 3 bits for indicating a subcarrier occupied by the PUSCH in a narrow band. The manner in which the narrow band is determined can be determined in a usual manner. DCI also contains

The bits indicate the narrowband index of the narrowband. The normal manner is that, in the first subframe of the DCI scheduled Msg3 or uplink data transmission, the narrowband where the subcarrier occupied by the PUSCH carrying the Msg3 or uplink data is located is the DCI

The sub-carriers in which the sub-carriers occupied by the PUSCH carrying the Msg3 or the uplink data are located are determined according to the frequency hopping mode of the PUSCH. The PRB index of the PRB occupied by the PUSCH is preferentially selected 4 or 5 in the narrowband. The manner in which the 3 bits of the DCI indicate the subcarriers occupied by the PUSCH in the narrowband may be the same as the manner in which the 3 bits of the RAR grant are used for the subcarriers occupied by the PUSCH in the narrowband.

Optionally, the format of the DCI is 6-0B. Optionally, in the DCI, the number of bits except the existing padding bits is

One. In the DCI, padding bits may or may not be included. The padding bit is used to expand the number of bits included in the DCI, such that the number of bits included in the DCI reaches a target value. When the DCI includes padding bits, the number of the padding bits that exist is greater than zero. When the DCI does not include a padding bit, the number of the padding bits present is zero. When the DCI does not include padding bits, in the DCI, the bits other than the existing padding bits are the bits included in the DCI.

In an example, if the UE selects the PRACH coverage enhancement level 2 or 3 to send the random access preamble, the allocation manner of the frequency domain resources occupied by the PUSCH in the embodiment of the present invention is applied, that is, the subcarrier is the minimum unit to the PUSCH. The occupied frequency domain resources are allocated.

In another example, the base station may allocate dedicated PRACH resources for UEs that support subcarrier level uplink resource allocation. The PRACH resource includes one or more of a time resource, a frequency resource, and a random access preamble. The UE supporting the subcarrier level uplink resource allocation refers to a UE that supports PUSCH resource allocation is <12 subcarriers. When the UE selects the dedicated PRACH resource to send a random access preamble, it indicates that the UE has the capability of supporting the uplink resource allocation of the subcarrier level, and the base station may use the DCI of the embodiment of the present invention to allocate the frequency domain resource occupied by the PUSCH. To transmit the subcarriers occupied by the DCI allocated by the DCCH. When the UE does not select the dedicated PRACH resource to send the random access preamble, it indicates that the UE does not have the capability of supporting the subcarrier level uplink resource allocation, and the base station allocates the frequency domain resource occupied by the PUSCH according to the normal DCI. The DCI allocated by the DCI is allocated.

In another example, when the DCI is used to schedule the MSCH that carries the retransmission or the PUSCH of the uplink data in the random access procedure, when transmitting the DCI, the base station may not know whether the UE has the supported subcarrier level. The capability of uplink resource allocation, so that dedicated PRACH resources can be avoided for UEs supporting subcarrier level uplink resource allocation. The base station may select to allocate the frequency domain resource to the PUSCH with the PRB as the minimum unit or the subcarrier as the minimum unit. The base station may include indication information in the MAC PDU of the RAR, where the indication information is used to indicate whether the minimum unit of the frequency domain resource allocation occupied by the DCI to the PUSCH is a PRB or a subcarrier. One way in which the MAC PDU of the RAR includes the indication information is that the first bit of the MAC RAR is used as the indication information; and the other manner is one or more of the 28th to 32th bits of the MAC RAR. One bit is used as the indication information; the other way is that the indication information is included in the MAC subheader of the RAR. The random access procedure in which the RAR is located and the random access procedure in which the Msg3 or the uplink data are located is the same random access procedure. The base station may also include indication information in the DCI, where the indication information is used to indicate whether the minimum unit of the frequency domain resource allocation occupied by the DCI for the PUSCH is a PRB or a subcarrier. If the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocated for the PUSCH is a subcarrier, and the UE has the capability of supporting the subcarrier level uplink resource allocation, the UE considers that the base station allocates a subcarrier for the PUSCH, and the UE follows the The DCI of the embodiment of the present invention interprets the DCI on the frequency domain resource allocation mode occupied by the PUSCH to determine the subcarrier occupied by the PUSCH. If the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocated for the PUSCH is a subcarrier, and the UE does not have the capability of supporting the uplink resource allocation of the subcarrier level, the UE considers that the base station allocates the PRB for the PUSCH, and the UE follows the The normal DCI interprets the DCI for the allocation of the frequency domain resources occupied by the PUSCH to determine the PRB occupied by the PUSCH. When the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocated for the PUSCH is a subcarrier, the base station can blindly detect whether the PUSCH is sent according to the resource allocation manner with the subcarrier as the minimum unit, or according to the PRB as the minimum unit. The resource allocation method is sent. If the indication information sent by the base station indicates that the minimum unit of the frequency domain resource allocated for the PUSCH is the PRB, the UE considers that the base station allocates the PRB for the PUSCH, and the UE interprets the DCI according to the allocation manner of the frequency domain resources occupied by the PUSCH according to the normal DCI. To determine the PRB occupied by the PUSCH.

In the embodiment of the present invention, the frequency domain resource occupied by the PUSCH allocated by the DCI is 3 subcarriers or 6 subcarriers, so that the UE can send the PUSCH on 3 or 6 subcarriers, so that the UE can concentrate the transmission power on a smaller bandwidth. The spectral efficiency of the PUSCH has been improved. In particular, when the channel condition of the UE is poor, and the UE selects the PRACH coverage enhancement level 2 or 3 to transmit the random access preamble, the resource allocation of the PUSCH using the subcarrier as the minimum unit can improve the detection performance, spectrum efficiency, and uplink of the PUSCH. capacity. Since the frequency domain resource occupied by the PUSCH allocated by the DCI of the prior art CE mode B is 2 PRBs, the PRB index of the 2 PRBs in the narrowband is 0, 1, or 2, 3, so that the PUSCH allocated by the DCI is occupied by the PUSCH. The PRB index in which the carrier is located is preferentially selected 4 or 5 in the narrowband PRB index, and the impact of the resource allocation of the PUSCH in which the subcarrier is the minimum unit on the existing PUSCH to which the two PRBs are allocated can be avoided. When the resource allocation of the PUSCH in the minimum unit of the subcarrier is implemented, the DCI size of the DCI of the normal CE mode B can be used without adding a new bit overhead, which can save the bit overhead of the DCI and ensure the detection performance of the DCI.

The foregoing describes the solution of the embodiment of the present invention mainly from the perspective of interaction between the network elements. It can be understood that each network element, such as a terminal device, a network device, etc., in order to implement the above functions, includes hardware structures and/or software modules corresponding to each function. Those skilled in the art will readily appreciate that the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. Professional and technical personnel can respond to each specific The methods described are used to implement the described functions, but such implementations are not considered to be beyond the scope of the present invention.

The embodiments of the present invention may divide the function modules of the terminal device, the network device, and the like according to the foregoing method. For example, each function module may be divided according to each function, or two or more functions may be integrated into one processing module. . The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.

In the case of using an integrated module, FIG. 4 shows a possible structural diagram of the terminal device involved in the above embodiment. The terminal device 400 includes a processing module 402 and a communication module 403. The processing module 402 is configured to control and manage the actions of the terminal device. For example, the processing module 402 is configured to support the terminal device to perform the processes 302 and 303 in FIG. 3, and/or other processes for the techniques described herein. The communication module 403 is configured to support communication between the terminal device and other network entities, such as communication with the network device. The terminal device may further include a storage module 401 for storing program codes and data of the terminal device.

The processing module 402 can be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the invention. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication module 403 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces. The storage module 401 can be a memory.

When the processing module 402 is a processor, the communication module 403 is a communication interface, and the storage module 401 is a memory, the terminal device according to the embodiment of the present invention may be the terminal device shown in FIG. 5.

Referring to FIG. 5, the terminal device 500 includes a processor 502, a communication interface 503, and a memory 501. The communication interface 503, the processor 502, and the memory 501 can be connected to each other through a communication connection.

In the case of using an integrated module, FIG. 6 shows a possible structural diagram of the network device involved in the above embodiment. The network device 600 includes a processing module 602 and a communication module 603. The processing module 602 is configured to control management of actions of the network device. For example, the processing module 602 is configured to support the network device to perform the process 301 of FIG. 3, and/or other processes for the techniques described herein. The communication module 603 is used to support communication between the network device and other network entities, such as communication with the terminal device. The network device may further include a storage module 601 for storing program codes and data of the network device.

The processing module 602 can be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the invention. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication module 603 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces. Storage Module 601 can be a memory.

When the processing module 602 is a processor, the communication module 603 is a communication interface, and the storage module 601 is a memory, the network device involved in the embodiment of the present invention may be the network device shown in FIG. 7.

Referring to FIG. 7, the network device 700 includes a processor 702, a communication interface 703, and a memory 701. The communication interface 703, the processor 702, and the memory 701 can be connected to each other through a communication connection.

The steps of the method or algorithm described in connection with the disclosure of the embodiments of the present invention may be implemented in a hardware manner, or may be implemented by a processor executing software instructions. The software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a core network interface device. Of course, the processor and the storage medium may also exist as discrete components in the core network interface device.

Those skilled in the art should appreciate that in one or more of the above examples, the functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. The scope of the protection, any modifications, equivalent substitutions, improvements, etc., which are made on the basis of the technical solutions of the present invention, are included in the scope of the present invention.

Claims (29)

1. A resource allocation method, the method comprising:

   The network device sends the random access response authorization information or the downlink control information to the terminal device, where the random access response authorization information or the downlink control information includes resource allocation information, and the resource allocation information is used to indicate the physical uplink shared channel. Subcarriers, the number of subcarriers is less than 12;

   The network device receives uplink information from the terminal device on a subcarrier of the physical uplink shared channel.
2. The method according to claim 1, wherein the network device sends the random access response authorization information or the downlink control information to the terminal device; the method further includes:

   The network device determines that the coverage enhancement level of the physical random access channel carrying the random access preamble sent by the terminal device is level 2 or 3.
3. The method according to claim 1, wherein the network device sends the random access response authorization information or the downlink control information to the terminal device; the method further includes:

   Determining, by the network device, that the physical random access channel resource used by the terminal device to send the random access preamble belongs to the first resource, where the first resource includes the first time resource, the first frequency resource, and the first random access preamble One or more of them.
4. The method according to claim 1, wherein the network device sends random access response authorization information to the terminal device, where the network device sends a random access response to the terminal device, the random access The response includes the random access response authorization information;

   The medium access control MAC protocol data unit PDU or the downlink control information of the random access response further includes indication information, where the indication information is used to indicate that the resource allocation information is used to indicate a subcarrier of a physical uplink shared channel.
5. A resource allocation method, the method comprising:

   The terminal device receives the random access response authorization information or the downlink control information from the network device, where the random access response authorization information or the downlink control information includes resource allocation information, and the resource allocation information is used to indicate the physical uplink shared channel. Subcarriers, the number of subcarriers is less than 12;

   Determining, by the terminal device, a subcarrier of a physical uplink shared channel according to the resource allocation information;

   The terminal device sends uplink information to the network device on the subcarrier.
6. The method according to claim 5, wherein the terminal device receives the random access response authorization information or the downlink control information from the network device; the method further includes:

   The terminal device sends a random access preamble to the network device, where the coverage enhancement level of the physical random access channel carrying the random access preamble is level 2 or 3.
7. The method according to claim 5, wherein the terminal device receives the random access response authorization information or the downlink control information from the network device; the method further includes:

   The terminal device sends a random access preamble to the network device, where the physical random access channel resource used by the random access preamble belongs to the first resource, and the first resource includes the first time resource, and the first resource One or more of a frequency resource and a first random access preamble.
8. The method according to claim 5, wherein the terminal device receives random from the network device The access response authorization information includes: the terminal device receiving a random access response from the network device, where the random access response includes the random access response authorization information;

   Before the determining, by the terminal device, the subcarriers of the physical uplink shared channel according to the resource allocation information, the method further includes:

   The terminal device acquires the media access control MAC protocol data unit PDU of the random access response or the indication information included in the downlink control information, and determines, according to the indication information, the resource allocation information to indicate physical uplink sharing. Subcarriers of the channel.
9. A network device, the network device comprising: a memory, a processor, and a communication interface;

   The memory is configured to store program instructions;

   The processor is configured to perform the following operations according to program instructions stored in the memory:

   Transmitting random access response authorization information or downlink control information to the terminal device by using the communication interface, where the random access response authorization information or the downlink control information includes resource allocation information; the resource allocation information is used to indicate physical a subcarrier of the uplink shared channel, where the number of the subcarriers is less than 12;

   And receiving, by the communication interface, uplink information from the terminal device on a subcarrier of the physical uplink shared channel.
10. The network device according to claim 9, wherein the processor further performs an operation of transmitting the random access response authorization information or the downlink control information to the terminal device by using the communication interface, Used to perform the following operations according to program instructions stored in the memory:

    The coverage enhancement level of the physical random access channel that determines the random access preamble transmitted by the terminal device is level 2 or 3.
11. The network device according to claim 9, wherein the processor further performs an operation of transmitting the random access response authorization information or the downlink control information to the terminal device by using the communication interface, Used to perform the following operations according to program instructions stored in the memory:

    Determining that the physical random access channel resource used by the terminal device to send the random access preamble belongs to the first resource, where the first resource includes one of a first time resource, a first frequency resource, and a first random access preamble Or a variety.
12. The network device according to claim 9, wherein the processor performs the operation of transmitting random access response authorization information to the terminal device by using the communication interface, including: using the communication interface to the terminal The device sends a random access response, where the random access response includes the random access response authorization information;

    The medium access control MAC protocol data unit PDU or the downlink control information of the random access response further includes indication information, where the indication information is used to indicate that the resource allocation information is used to indicate a subcarrier of a physical uplink shared channel.
13. A terminal device, comprising: a memory, a processor, and a communication interface;

    The memory is configured to store program instructions;

    The processor is configured to perform the following operations according to program instructions stored in the memory:

    Receiving random access response authorization information or downlink control information from the network device by using the communication interface, where the random access response authorization information or the downlink control information includes resource allocation information; the resource allocation information is used to indicate physical a subcarrier of the uplink shared channel, where the number of the subcarriers is less than 12;

    Determining a subcarrier of the physical uplink shared channel according to the resource allocation information;

    And transmitting, by the communication interface, uplink information to the network device on the subcarrier.
14. The terminal device according to claim 13, wherein said processor further performs said operation of receiving said random access response authorization information or downlink control information from said network device through said communication interface Used to perform the following operations according to program instructions stored in the memory:

    And transmitting, by the communication interface, a random access preamble to the network device, where a coverage enhancement level of the physical random access channel carrying the random access preamble is level 2 or 3.
15. The terminal device according to claim 13, wherein said processor further performs said operation of receiving said random access response authorization information or downlink control information from said network device through said communication interface Used to perform the following operations according to program instructions stored in the memory:

    Transmitting, by the communication interface, a random access preamble to the network device, where the physical random access channel resource used by the random access preamble belongs to a first resource, and the first resource includes a first time resource, One or more of a frequency resource and a first random access preamble.
16. The terminal device according to claim 13, wherein said processor performs said operation of receiving random access response authorization information from said network device through said communication interface, comprising: said network from said network through said communication interface Receiving, by the device, a random access response, where the random access response includes the random access response authorization information;

    The processor is further configured to perform the following operations according to the program instructions stored in the memory, before performing, by the processor, the operation of determining the subcarriers of the physical uplink shared channel according to the resource allocation information:

    Acquiring the media access control MAC protocol data unit PDU of the random access response or the indication information included in the downlink control information, determining, according to the indication information, the resource allocation information, used to indicate the subcarrier of the physical uplink shared channel .
17. The method according to any one of claims 1 to 8, or the device according to any one of claims 9 to 16, wherein the resource allocation information is used to indicate a child of a physical uplink shared channel Carrier, the number of subcarriers is less than 12, including:

    The resource allocation information includes a first field, where the length of the first field is 3 bits, where the first field is used to indicate the first physical resource block PRB and the first PRB in the first narrowband The subcarriers of the physical uplink shared channel.
18. The method or apparatus of claim 17 wherein:

    The resource allocation information included in the random access response authorization information further includes a second field, where the length of the second field is 2 bits, and the second field is used to indicate the first narrowband.
19. The method or apparatus of claim 17 wherein:

    The resource allocation information included in the downlink control information further includes a second field, where the length of the second field is

    

    a second bit, the second field is used to indicate the first narrow band; wherein

    

    Indicates the number of PRBs included in the uplink system bandwidth.
20. A method or apparatus according to any one of claims 17 to 19, wherein

    Each sub-carrier indicated by the value of the first field is 3 sub-carriers; or

    Each sub-carrier indicated by the value of the first field is 6 sub-carriers; or

    The subcarrier indicated by the first value of the first field is 3 subcarriers, and the subcarrier indicated by the second value of the first field is 6 subcarriers.
21. A method or apparatus according to claim 20, wherein

    The subcarrier index of the three subcarriers in the first PRB is 0, 1, 2, or 3, 4, 5, or 6, 7, 8, or 9, 10, 11; and/or,

    The subcarrier index of the 6 subcarriers in the first PRB is 0, 1, 2, 3, 4, 5, or 6, 7, 8, 9, 10, 11.
22. A method or apparatus according to any one of claims 17 to 21, wherein

    The PRB index of the first PRB in the first narrowband is 4 or 5.
23. The method or device according to any one of claims 17 to 22, wherein eight values of the first field indicate a PRB index and a location of the first PRB in the first narrowband The subcarrier index of the subcarrier in the first PRB includes the following correspondence:

    The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5. The subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

    The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8; the PRB index is 4. The subcarrier index is 9, 10, 11; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

    The PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 6, 7, 8; the PRB index is 5. The subcarrier index is 9, 10, 11; the PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5, subcarrier index is 6, 7, 8, 9, 10, 11; or

    The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5. The subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8, 9, 10, 11; the PRB index is 5, and the subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 3, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11; or

    The PRB index is 4, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 5, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 4, the subcarrier index 6, 7, 8; PRB index is 4, subcarrier index is 9, 10, 11; PRB index is 5, subcarrier index is 6, 7, 8; PRB index is 5, subcarrier index 9, 10, 11; PRB index is 3, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11;

    The PRB index is 4, the subcarrier index is 0, 1, 2; the PRB index is 4, the subcarrier index is 3, 4, 5; the PRB index is 4, the subcarrier index is 6, 7, 8; the PRB index is 4. The subcarrier index is 9, 10, 11; the PRB index is 5, the subcarrier index is 0, 1, 2; the PRB index is 5, the subcarrier index is 3, 4, 5; the PRB index is 5, and the subcarrier index is 6. , 7, 8; PRB index is 5, subcarrier index is 9, 10, 11; or

    The PRB index is 2, the subcarrier index is 0, 1, 2, 3, 4, 5; the PRB index is 2, the subcarrier index is 6, 7, 8, 9, 10, 11; the PRB index is 3, the subcarrier index 0, 1, 2, 3, 4, 5; PRB index is 3, subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 4, subcarrier index is 0, 1, 2, 3 4, 5; PRB index is 4, subcarrier index is 6, 7, 8, 9, 10, 11; PRB index is 5, subcarrier index is 0, 1, 2, 3, 4, 5; PRB index is 5. The subcarrier index is 6, 7, 8, 9, 10, 11.
24. The apparatus according to any one of claims 1 to 8, 17 to 23, or the apparatus according to any one of claims 9 to 16, 17 to 23, wherein

    The number of bits of the random access response authorization information is 12; and/or,

    In the downlink control information, the number of bits other than the existing padding bits is

    

    among them,

    

    Indicates the number of physical resource blocks PRB included in the uplink system bandwidth; and/or,

    The format of the downlink control information is 6-0B.
25. The method according to any one of claims 1 to 8, 17 to 24, or the device according to any one of claims 9 to 16, 17 to 24, wherein the uplink information is Receiving, after the network device receives the random access preamble sent by the terminal device, and the information received by the network device before sending the contention resolution message to the terminal device; and/or,

    The uplink information is message 3; and/or,

    The uplink information is uplink data.
26. A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 4.
27. A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 5-8.
28. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 4.
29. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 5 to 8.

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