CN107872817B

CN107872817B - Resource allocation method, network equipment and terminal equipment

Info

Publication number: CN107872817B
Application number: CN201610856742.3A
Authority: CN
Inventors: 孙伟; 郭志恒; 程型清; 谢信乾
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-27
Filing date: 2016-09-27
Publication date: 2021-02-09
Anticipated expiration: 2036-09-27
Also published as: CN107872817A

Abstract

The embodiment of the invention discloses a resource allocation method, network equipment and terminal equipment, wherein the method comprises the following steps: the network equipment determines a subcarrier mapping mode of the random access preamble sequence according to the subcarrier number occupied by the random access preamble sequence and the subcarrier number of the physical random access channel; if the number of subcarriers occupied by the former is less than that of the subcarriers of the latter, and the frequency domain resources of the L physical random access channels with the same format are continuous resources, the spare subcarriers of the M physical random access channels in the L are configured between the continuous resources and the subcarriers occupied by other physical channels or physical random access channels with other formats, and the random access preamble sequence is mapped at the position of the continuous resources where the spare subcarriers are not configured; and receiving the random access leader sequence sent by the terminal equipment according to the determined subcarrier mapping mode. The invention can reduce the interference between the physical random access channel and other physical channels or physical random access channels with other formats.

Description

Resource allocation method, network equipment and terminal equipment

Technical Field

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

Background

With the continuous development of communication network technology, users have made new demands for network transmission speed, network system capacity, network transmission quality, and the like. The fifth Generation mobile communication technology (5th-Generation, 5G) has been developed and developed. The 5G air interface needs to support various services in the future, and the various services may have different requirements, such as enhanced Mobile BroadBand (eMBB) services, which mainly require rate, coverage, transmission delay, and mobility. The main requirements of Ultra-high reliability and Ultra-Low Latency (URLLC) services are reliability, mobility and transmission delay. The major requirements of large Machine Type Communications (mtc) services are the number of connections per unit area (connection density) and the coverage area. And the 5G system supports various scenes, and different application scenes and wireless environments are different, and the channel environments of different terminals and base stations are greatly different.

In the prior art 5G, a design scheme of a Physical Random Access Channel (PRACH) is proposed, where a symbol length of a Random Access Preamble sequence (Preamble) is different from a symbol length of data, a resource mapping manner of each PRACH is the same, subcarriers of the PRACH are adjacent to subcarriers of the data Channel, and there is no spaced blank subcarriers between the subcarriers, for example, a subcarrier of the PRACH with a largest number is adjacent to a subcarrier of the data Channel, which may cause a base station to have large interference when receiving the data and the PRACH simultaneously.

Disclosure of Invention

Embodiments of the present invention provide a resource allocation method, a network device, and a terminal device, which may reduce interference between a PRACH and other physical channels or physical random access channels of other formats.

The first aspect of the present invention provides a method for resource allocation, including:

the network equipment determines a subcarrier mapping mode of the random access preamble sequence according to the subcarrier number occupied by the random access preamble sequence and the subcarrier number of a physical random access channel;

if the number of subcarriers occupied by the random access preamble sequence is less than that of subcarriers of a physical random access channel, and the frequency domain resources occupied by L physical random access channels with the same format are a section of continuous resources, allocating the spare subcarriers of M physical random access channels in the L physical random access channels between the continuous resources and subcarriers occupied by other physical channels or physical random access channels with other formats, and mapping the random access preamble sequence at the position of the continuous resources where the spare subcarriers are not allocated, wherein L is an integer greater than or equal to 2, and M is less than or equal to L;

and the network equipment receives the random access leader sequence sent by the terminal equipment according to the determined subcarrier mapping mode.

The subcarrier mapping mode can enable the spare subcarriers of the M physical random access channels to be configured between continuous resources and subcarriers occupied by other physical channels or physical random access channels of other formats, so that the interference of the PRACH to other physical channels or physical random access channels of other formats can be reduced, and the data transmission quality and the transmission efficiency are improved.

With reference to the implementation manner of the first aspect, in a first possible implementation manner of the first aspect,

if other physical channels or physical random access channels of other formats exist at both ends of the continuous resource, the spare subcarriers of the M physical random access channels are configured at positions adjacent to the other physical channels or the physical random access channels of other formats at both ends of the continuous resource respectively.

With reference to the first implementation manner of the first aspect, in a second possible implementation manner of the first aspect,

if the spare subcarriers of the M physical random access channels are allocated at the two ends of the continuous resource at positions adjacent to other physical channels or physical random access channels of other formats, respectively, and M is equal to L, the subcarrier mapping mode of the random access preamble sequence is as follows:

wherein floor represents a down rounding operation, K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, and K is the frequency of a resource elementA domain number, P being the number of the starting physical resource block of the physical random access channel, n_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

When other physical channels or physical random access channels of other formats exist at both ends of the continuous resource, the vacant subcarriers can be configured at both ends of the continuous resource, and the PRACH is isolated from the physical channels or physical random access channels of other formats, thereby reducing interference.

With reference to the implementation manner of the first aspect, in a third possible implementation manner of the first aspect, if there are other physical channels or physical random access channels in other formats in positions adjacent to the starting position of the continuous resource, and there are no other physical channels or physical random access channels in other formats in positions adjacent to the ending position, the free subcarriers of the M physical random access channels are configured in the starting position of the continuous resource.

With reference to the third implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, if the free subcarriers of the M physical random access channels are configured at the starting positions of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

wherein K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, K is the frequency domain number of resource elements, P is the number of the initial physical resource block of the physical random access channel, N is the number of the initial physical resource block of the physical random access channel_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

Other physical channels or physical random access channels of other formats exist at the position adjacent to the starting position of only the PRACH with the number of 0, that is, the starting position of the continuous resource, of the L continuous PRACH, and at this time, the vacant subcarriers can be configured at the starting position of the continuous resource, so that the PRACH is isolated from the other physical channels or the physical random access channels of other formats, thereby reducing interference.

With reference to the implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, if there are other physical channels or physical random access channels in other formats in positions adjacent to the end position of the continuous resource, and there are no other physical channels or physical random access channels in other formats in positions adjacent to the start position, the free subcarriers of the M physical random access channels are configured in the end position of the continuous resource.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, if the free subcarriers of the M physical random access channels are configured at the end position of the continuous resource, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

Other physical channels or physical random access channels of other formats exist in the positions adjacent to the end positions of L continuous PRACHs only with the serial number of L-1, namely the end positions of continuous resources, and at the moment, vacant subcarriers can be configured at the end positions of the continuous resources to separate the PRACHs from the other physical channels or the physical random access channels of other formats, so that the interference is reduced.

With reference to the first aspect, or with reference to the first or second or third or fourth or fifth or sixth possible implementation manners of the first aspect, in a seventh possible implementation manner of the first aspect, the subcarrier mapping manner of the random access preamble sequence is pre-stored in the network device and the terminal device; or

And the subcarrier mapping mode of the random access leader sequence is sent to the terminal equipment by the network equipment through system information or Radio Resource Control (RRC) signaling.

Optionally, in another embodiment, the network device may further predefine a plurality of PRACH configurations, where each PRACH corresponds to a different number of symbols and resource block location. The network device notifies the terminal device of the plurality of PRACH configurations through a system message or Radio Resource Control (RRC) signaling. And when the network equipment receives the random access preamble sequence at the plurality of PRACH resource block positions, the random access preamble sequence is received according to the symbol number of each PRACH respectively. Therefore, the receiving reliability of the random access leader sequence can be improved, and the reasonable utilization rate of resources is improved.

The second aspect of the present invention provides a method for resource allocation, including:

the terminal equipment determines a subcarrier mapping mode of a random access leader sequence;

and the terminal equipment sends the random access leader sequence to network equipment according to the determined subcarrier mapping mode.

With reference to the implementation manner of the second aspect, in a first possible implementation manner of the second aspect, if there are other physical channels or physical random access channels in other formats at both ends of the continuous resource, the spare subcarriers of the M physical random access channels are configured at positions at both ends of the continuous resource, where the positions are adjacent to the other physical channels or the physical random access channels in other formats, respectively.

With reference to the implementation manner of the first aspect, in a second possible implementation manner of the second aspect, if the free subcarriers of the M physical random access channels are configured at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource, respectively, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

wherein floor represents a rounding-down operation, K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, K is the frequency domain number of resource elements, P is the number of the starting physical resource block of the physical random access channel, N is the number of the starting physical resource_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

With reference to the implementation manner of the second aspect, in a third possible implementation manner of the second aspect, if there are other physical channels or physical random access channels of other formats in positions adjacent to the starting position of the continuous resource, and there are no other physical channels or physical random access channels of other formats in positions adjacent to the ending position, the free subcarriers of the M physical random access channels are configured in the starting position of the continuous resource.

With reference to the third implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, if the free subcarriers of the M physical random access channels are configured at the starting positions of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, if there are other physical channels or physical random access channels in other formats in positions adjacent to the end position of the continuous resource, and there are no other physical channels or physical random access channels in other formats in positions adjacent to the start position, the free subcarriers of the M physical random access channels are configured in the end position of the continuous resource.

With reference to the fifth implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, if the free subcarriers of the M physical random access channels are configured at the end position of the continuous resource, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

wherein K is the physical resource occupied by each physical random access channelThe number of blocks, K1 is the number of subcarriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, K is the frequency domain number of resource elements, P is the number of the initial physical resource block of the physical random access channel, N is the number of the initial physical resource block of the physical random access channel_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

With reference to the second aspect, or with reference to the first or second or third or fourth or fifth or sixth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the subcarrier mapping manner of the random access preamble sequence is pre-stored in the network device and the terminal device; or

And the terminal equipment obtains the subcarrier mapping mode of the random access leader sequence through system information or Radio Resource Control (RRC) signaling.

Optionally, in another embodiment, the network device may further predefine a plurality of PRACH configurations, where each PRACH corresponds to a different number of symbols and resource block location. The network device notifies the terminal device of the plurality of PRACH configurations through a system message or Radio Resource Control (RRC) signaling. And the network equipment selects different PRACH resources from the plurality of PRACH resource block positions according to the wireless signal receiving quality, and respectively sends random access preamble sequences according to the symbol number of each PRACH. Therefore, the sending and receiving reliability of the random access leader sequence can be improved, and the reasonable utilization rate of resources is improved.

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

a determining unit, configured to determine a subcarrier mapping manner of a random access preamble sequence according to a subcarrier number occupied by the random access preamble sequence and a subcarrier number of a physical random access channel;

a mapping unit, configured to configure, if the number of subcarriers occupied by the random access preamble sequence is less than the number of subcarriers of a physical random access channel, and frequency domain resources occupied by L physical random access channels of the same format are a segment of continuous resources, spare subcarriers of M physical random access channels of the L physical random access channels between the continuous resources and subcarriers occupied by other physical channels or physical random access channels of other formats, and map the random access preamble sequence at a position of the continuous resources where the spare subcarriers are not configured, where L is an integer greater than or equal to 2 and M is less than or equal to L;

and the receiving unit is used for receiving the random access leader sequence sent by the terminal equipment according to the determined subcarrier mapping mode.

With reference to the implementation manner of the third aspect, in a first possible implementation manner of the third aspect, the mapping unit is specifically configured to:

With reference to the implementation manner of the first aspect, in a second possible implementation manner of the third aspect, if the mapping unit configures the spare subcarriers of the M physical random access channels at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource, and the M is equal to the L, then the subcarrier mapping manner of the random access preamble sequence is:

wherein floor represents a rounding-down operation, K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, K is the frequency domain number of resource elements, P is the number of the starting physical resource block of the physical random access channel, N is the number of the starting physical resource_RACHCoding for currently selected physical random access channelNumber, n is the number of elements of the random access preamble sequence mapped to resource element k.

With reference to the implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the mapping unit is specifically configured to:

if there are other physical channels or physical random access channels of other formats in the positions adjacent to the starting position of the continuous resource and there are no other physical channels or physical random access channels of other formats in the positions adjacent to the ending position, the spare subcarriers of the M physical random access channels are configured in the starting position of the continuous resource.

With reference to the third implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, if the mapping unit configures the free subcarriers of the M physical random access channels at the start positions of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the mapping unit is specifically configured to:

if there are other physical channels or physical random access channels of other formats in the positions adjacent to the end position of the continuous resource and there are no other physical channels or physical random access channels of other formats in the positions adjacent to the start position, then the spare subcarriers of the M physical random access channels are configured in the end position of the continuous resource.

With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner of the third aspect, if the mapping unit configures the free subcarriers of the M physical random access channels at the end position of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the third aspect, or with reference to the first or second or third or fourth or fifth or sixth possible implementation manner of the third aspect, in a seventh possible implementation manner of the third aspect, the subcarrier mapping manner of the random access preamble sequence is pre-stored in the network device and the terminal device; or

A fourth aspect of an embodiment of the present invention provides a network device, including:

the network device comprises a processor, a memory, an interface circuit and a bus, wherein the processor, the memory and the interface circuit are connected through the bus, the interface circuit is used for the network device to communicate with other devices and transmit data, the memory is used for storing a group of program codes, and the processor is used for calling the program codes stored in the memory and executing the following operations:

determining a subcarrier mapping mode of a random access leader sequence according to the subcarrier number occupied by the random access leader sequence and the subcarrier number of a physical random access channel;

and receiving the random access leader sequence sent by the terminal equipment according to the determined subcarrier mapping mode.

With reference to the implementation manner of the fourth aspect, in a first possible implementation manner of the fourth aspect, the processor is specifically configured to:

With reference to the implementation manner of the first aspect of the fourth aspect, in a second possible implementation manner of the fourth aspect, if the free subcarriers of the M physical random access channels are configured at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource, respectively, and M is equal to the L, a subcarrier mapping manner of the random access preamble sequence is:

With reference to the implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the processor is specifically configured to:

With reference to the third implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, if the free subcarriers of the M physical random access channels are configured at the starting positions of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the processor is specifically configured to:

With reference to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner of the fourth aspect, if the free subcarriers of the M physical random access channels are configured at the end position of the continuous resource, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the fourth aspect, or with reference to the first or second or third or fourth or fifth or sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the subcarrier mapping manner of the random access preamble sequence is pre-stored in the network device and the terminal device; or

A fifth aspect of an embodiment of the present invention provides a terminal device, including:

a determining unit, configured to determine a subcarrier mapping manner of a random access preamble sequence;

a mapping unit, configured to, if the number of subcarriers occupied by the random access preamble sequence is less than the number of subcarriers of a physical random access channel, and a frequency domain resource occupied by L physical random access channels of the same format is a segment of continuous resource, configure spare subcarriers of M physical random access channels of the L physical random access channels between the continuous resource and subcarriers occupied by other physical channels or physical random access channels of other formats, and map the random access preamble sequence at a position of the continuous resource where spare subcarriers are not configured, where L is an integer greater than or equal to 2 and M is less than or equal to L;

and the sending unit is used for sending the random access leader sequence to the network equipment according to the determined subcarrier mapping mode.

With reference to the implementation manner of the fifth aspect, in a first possible implementation manner of the fifth aspect, the mapping unit is specifically configured to:

With reference to the implementation manner of the first aspect, in a second possible implementation manner of the fifth aspect, if the mapping unit configures the free subcarriers of the M physical random access channels at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource, respectively, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

With reference to the implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the mapping unit is specifically configured to:

With reference to the third implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, if the mapping unit configures the free subcarriers of the M physical random access channels at the start positions of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the mapping unit is specifically configured to:

With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, if the mapping unit configures free subcarriers of the M physical random access channels at the end position of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the fifth aspect, or with reference to the first or second or third or fourth or fifth or sixth possible implementation manner of the fifth aspect, in a seventh possible implementation manner of the fifth aspect, the subcarrier mapping manner of the random access preamble sequence is pre-stored in the network device and the terminal device; or

A sixth aspect of the embodiments of the present invention provides a terminal device, including:

the terminal equipment comprises a processor, a memory, an interface circuit and a bus, wherein the processor, the memory and the interface circuit are connected through the bus, the interface circuit is used for the terminal equipment to communicate with other equipment and transmit data, the memory is used for storing a group of program codes, and the processor is used for calling the program codes stored in the memory and executing the following operations:

determining a subcarrier mapping mode of a random access leader sequence;

and sending the random access leader sequence to network equipment according to the determined subcarrier mapping mode.

With reference to the implementation manner of the sixth aspect, in a first possible implementation manner of the sixth aspect, the processor is specifically configured to:

With reference to the implementation manner of the first aspect, in a second possible implementation manner of the sixth aspect, if the free subcarriers of the M physical random access channels are configured at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource, respectively, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

With reference to the implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the processor is specifically configured to:

With reference to the third implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, if the free subcarriers of the M physical random access channels are configured at the starting positions of the continuous resources, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

wherein K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, and N is the number of subcarriers of each physical resource block of the physical random access channelThe length of an access leader sequence, k is the frequency domain number of resource elements, P is the number of the initial physical resource block of the physical random access channel, n_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

With reference to the implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the processor is specifically configured to:

With reference to the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, if the free subcarriers of the M physical random access channels are configured at the end position of the continuous resource, and M is equal to L, a subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

With reference to the sixth aspect, or with reference to the first or second or third or fourth or fifth or sixth possible implementation manner of the sixth aspect, in a seventh possible implementation manner of the sixth aspect, the subcarrier mapping manner of the random access preamble sequence is pre-stored in the network device and the terminal device; or

A seventh aspect of the embodiments of the present invention provides a computer storage medium, which includes a set of program codes for executing the method according to any implementation manner of the first aspect of the present invention.

Drawings

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

FIG. 1 is a flowchart illustrating a resource allocation method according to a first embodiment of the present invention;

FIG. 2 is a flowchart illustrating a resource allocation method according to a second embodiment of the present invention;

FIG. 3 is a flowchart illustrating a resource allocation method according to a third embodiment of the present invention;

FIG. 4 is a flowchart illustrating a resource allocation method according to a fourth embodiment of the present invention;

FIG. 5 is a diagram illustrating a network device according to a first embodiment of the present invention;

FIG. 6 is a diagram illustrating a network device according to a second embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a terminal device according to a first embodiment of the present invention;

fig. 8 is a schematic diagram illustrating a terminal device according to a second embodiment of the present invention.

Detailed Description

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

The network device in the embodiment of the present invention may be a base station or a server, and in actual implementation, the network device may be connected to the terminal device through a wired or wireless network. And realizing the communication between the network equipment and the terminal equipment.

The terminal in the embodiment of the present invention may include a smart Phone (such as an Android Phone, an iOS Phone, a Windows Phone, etc.), a tablet computer, a palmtop computer, a notebook computer, a Mobile Internet Device (MID), a wearable device, or the like, and the above terminals are merely examples, but not exhaustive, and include but are not limited to the above terminals.

The method for resource allocation according to the present invention is described in detail below with reference to specific embodiments.

Please refer to fig. 1, which is a flowchart illustrating a resource allocation method according to a first embodiment of the present invention, the method includes:

s101, the network equipment determines a subcarrier mapping mode of the random access preamble sequence according to the subcarrier number occupied by the random access preamble sequence and the subcarrier number of the physical random access channel.

The network device may configure the subcarrier mapping scheme of the random access preamble sequence according to the number of subcarriers occupied by the random access preamble sequence and the number of subcarriers of the physical random access channel,

when the terminal needs to access the network, a random access preamble sequence may be sent to the network device to request access.

S102, if the number of the sub-carriers occupied by the random access preamble sequence is less than that of the physical random access channel, the spare sub-carriers of the M physical random access channels are configured between the continuous resources and the sub-carriers occupied by the physical random access channels of other physical channels or other formats.

It should be noted that the continuous resource is a frequency domain resource occupied by L physical random access channels of the same format, and the vacant subcarriers of M physical random access channels in the L physical random access channels are selected to implement the vacant subcarrier configuration method of the present invention, where M is equal to or less than L. L may be equal to or greater than two, and the embodiment of the present invention is not limited at all.

S103, the network equipment receives the random access leader sequence sent by the terminal equipment according to the determined subcarrier mapping mode.

Optionally, the subcarrier mapping manner of the random access preamble sequence is pre-stored in the network device and the terminal device; or

That is, after the network device determines the subcarrier mapping mode of the random access preamble sequence, the network device may notify the terminal through a system message or RRC signaling. Or after the network device or the communication protocol standard determines the subcarrier mapping mode of the random access preamble sequence, the mapping mode or the mapping rule may be stored in advance at both ends of the network device and the terminal device. Thus, the terminal can transmit according to the determined mapping mode when transmitting the random access preamble sequence.

The resource allocation method of the embodiment of the invention can allocate the vacant subcarriers of the L physical random access channels occupying the continuous resources between the continuous resources and the subcarriers occupied by the physical random access channels of other physical channels or other formats, thereby reducing the interference of the PRACH to the physical random access channels of other physical channels or other formats and improving the data transmission quality and the transmission efficiency.

Referring to fig. 2, a flowchart of a resource allocation method according to a second embodiment of the present invention is shown, where the method includes:

s201, the network device determines a subcarrier mapping mode of the random access preamble sequence according to the subcarrier number occupied by the random access preamble sequence and the subcarrier number of the physical random access channel.

If the number of the sub-carriers occupied by the random access preamble sequence is less than that of the physical random access channel, the spare sub-carriers of the M physical random access channels are configured between the continuous resources and the sub-carriers occupied by the physical random access channels of other physical channels or other formats.

It should be noted that the frequency domain resource occupied by L physical random access channels with the same format is a segment of continuous resource, and the vacant subcarriers of M physical random access channels in the L physical random access channels are selected to implement the vacant subcarrier configuration method of the present invention, where M is equal to or less than L. L may be equal to or greater than two, and the embodiment of the present invention is not limited at all.

S202, if there are other physical channels or physical random access channels of other formats at both ends of the continuous resource, the spare sub-carriers of the M physical random access channels are configured at positions adjacent to the physical channels or the physical random access channels of other formats at both ends of the continuous resource.

In particular, can be

The spare sub-carriers are configured on one side of the physical random access channel with the number of 0, which is close to other physical channels or physical random access channels with other formats;

when M (K X K1-N) is even, it will be

The sub-carriers are mapped on the side of the physical random access channel with the number of L-1 close to other physical channels or physical random access channels with other formats, or when M (K1-N) is an odd number, M (K1-N) is a random number

The sub-carriers are mapped on one side of the physical random access channel with the serial number of L-1, which is close to other physical channels or physical random access channels with other formats;

wherein, floor represents a down rounding operation, K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, and N is the length of the random access preamble sequence;

when M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

wherein k is the frequency domain number of the resource element, P is the number of the initial physical resource block of the physical random access channel, n_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

That is, when the starting PRB number P of the PRACH is not 0 and (P + L × K-1) is less than the system maximum PRB number, it indicates that there are data channels at both ends of L consecutive PRACH, and at this time, the free subcarriers of M physical random access channels may be configured at both ends of the consecutive resources, so as to isolate the PRACH from other physical channels or physical random access channels of other formats, thereby reducing interference.

It should be noted that the numbers in the embodiments of the present invention start from 0 in descending order, and may also start from 1 or other numbers if necessary, and the embodiments of the present invention are not limited at all.

S203, if there are other physical channels or physical random access channels of other formats in the positions adjacent to the starting position of the continuous resource and there are no other physical channels or physical random access channels of other formats in the positions adjacent to the ending position, configuring the free subcarriers of the M physical random access channels at the starting position of the continuous resource.

Specifically, (M (K × K1-N)) vacant subcarriers may be configured on a side of the physical random access channel numbered 0 close to other physical channels or physical random access channels of other formats;

wherein, K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, and N is the length of the random access preamble sequence;

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

That is, when the starting PRB number P of the PRACH is such that (P + L × K-1) is equal to the system maximum PRB number, it indicates that only the channel with number 0, that is, the physical random access channel in another physical channel or another format exists at the position adjacent to the starting position of the continuous resource, and at this time, the vacant subcarriers may be configured at the starting position of the continuous resource, and the PRACH is isolated from the physical random access channel in another physical channel or another format, thereby reducing interference.

S204, if the positions adjacent to the ending position of the continuous resource have other physical channels or physical random access channels with other formats, and the positions adjacent to the starting position do not have other physical channels or physical random access channels with other formats, allocating the spare sub-carriers of the M physical random access channels at the ending position of the continuous resource.

Specifically, (M (K × K1-N)) vacant subcarriers may be configured on the side of the physical random access channel numbered L-1 close to the data channel;

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

That is, when the starting PRB number P of the PRACH is 0, it indicates that only the highest numbered channel of the L consecutive PRACH, that is, the position adjacent to the end position of the consecutive resource, has other physical channels or physical random access channels of other formats, and at this time, the vacant subcarriers may be arranged at the end position of the consecutive resource, and the PRACH may be isolated from other physical channels or physical random access channels of other formats, thereby reducing interference.

S205, the network equipment receives the random access leader sequence sent by the terminal equipment according to the determined subcarrier mapping mode.

The resource allocation method of the embodiment of the invention specifically describes how to allocate vacant sub-carriers and how to map the random access preamble sequence to the sub-carriers under the condition that L PRACHs occupy different positions of continuous resources. The method can be used for various conditions, reduce the interference of the PRACH to other physical channels or physical random access channels with other formats, and improve the data transmission quality and the transmission efficiency.

It should be noted that the 5G system supports various scenarios, and the wireless environment and deployment frequency of the various scenarios are different, for example

Indor scene: indoor scene, coverage area is small, and the station spacing is 20 m.

Dense Urban: dense urban areas, heterogeneous network coverage, medium coverage area and macro station spacing of 200 m.

Urban Macro: the urban area is covered by macro stations, the coverage area is medium, and the distance between macro stations is 500 m.

Rural: in suburbs, macro stations cover large coverage areas, and the macro station spacing is 1732m or 5000 m.

High Speed: in a high-speed scene, the moving speed of the terminal is very high, such as high-speed rail coverage, and the station spacing 1732m of the macro station.

Extreme road: the suburban environment is greatly covered, and the macro station covers up to 1000 km.

Different application scenarios and different wireless environments are provided, and the channel environments of different terminal devices and network devices are greatly different.

In the prior art, a user terminal sending a random access preamble sequence usually fixedly occupies 2 symbols, for edge users with poor channel conditions, the receiving performance of the random access preamble sequence is poor, which results in random access failure, and for scenes with small coverage, the random access preamble sequence occupies two symbols, which is also wasted to some extent.

Therefore, different symbol numbers occupied by different PRACH configurations may be configured according to a scenario in which a user is located. The user terminal can adopt different symbol numbers to send random access leader sequences.

For example, a user with excellent channel conditions employs a random access preamble sequence of 1 symbol, 2 symbols with moderate channel conditions, and 3 or more symbols with poor channel conditions. The specific implementation mode can be as follows:

and the network equipment predefines a plurality of PRACH configurations, and each PRACH corresponds to different symbol numbers and resource block positions. The network device notifies the terminal device of the plurality of PRACH locations through a system message or Radio Resource Control (RRC) signaling. And when the network equipment receives the random access preamble sequence at the plurality of PRACH resource block positions, the random access preamble sequence is received according to the symbol number of each PRACH respectively.

The terminal equipment side can acquire the configuration of the PRACH by receiving a system message or RRC signaling sent by the network equipment, and determine the resource block position of the PRACH and the symbol number corresponding to each PRACH. An appropriate PRACH is selected according to its own channel condition, such as Reference Signal Reception Power (RSRP), and a random access preamble sequence is transmitted. Therefore, the quality of the random access leader sequence is improved, and the reasonable utilization rate of resources is improved.

Referring to fig. 3, a flowchart of a resource allocation method according to a third embodiment of the present invention is shown, where the method includes:

s301, the terminal equipment determines a subcarrier mapping mode of the random access leader sequence.

Optionally, the terminal may determine how to send the random access preamble sequence according to a subcarrier mapping manner of a pre-stored random access preamble sequence, and may also receive a system message or RRC signaling sent by the network device to determine how to send the random access preamble sequence.

S302, if the number of the sub-carriers occupied by the random access preamble sequence is less than that of the physical random access channel, the spare sub-carriers of the M physical random access channels are configured between the continuous resources and the sub-carriers occupied by the physical random access channels of other physical channels or other formats.

S303, the terminal equipment sends the random access leader sequence to network equipment according to the determined subcarrier mapping mode.

The resource allocation method of the embodiment of the invention can enable the terminal equipment to allocate the vacant sub-carriers of the continuous resources between the continuous resources and the sub-carriers occupied by other channels when the random access preamble sequence is sent, thereby reducing the interference of the PRACH to other physical channels or physical random access channels with other formats and improving the data transmission quality and the transmission efficiency.

Referring to fig. 4, a flowchart of a resource allocation method according to a fourth embodiment of the present invention is shown, where the method includes:

s401, the terminal equipment determines a subcarrier mapping mode of the random access leader sequence.

S402, if there are other physical channels or physical random access channels of other formats at both ends of the continuous resource, the spare sub-carriers of the M physical random access channels are configured at positions adjacent to the physical channels or the physical random access channels of other formats at both ends of the continuous resource.

In particular, can be

when M (K X K1-N) is even, it will be

S403, if there are other physical channels or physical random access channels of other formats in the positions adjacent to the starting position of the continuous resource and there are no other physical channels or physical random access channels of other formats in the positions adjacent to the ending position, configuring the free subcarriers of the M physical random access channels at the starting position of the continuous resource.

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

S404, if there are other physical channels or physical random access channels of other formats in the positions adjacent to the ending position of the continuous resource, and there are no other physical channels or physical random access channels of other formats in the positions adjacent to the starting position, configuring the free subcarriers of the M physical random access channels at the ending position of the continuous resource.

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

S405, the terminal device sends the random access leader sequence to the network device according to the determined subcarrier mapping mode.

Referring to fig. 5, a schematic diagram of a network device according to a first embodiment of the present invention is shown, where the network device according to the embodiment of the present invention includes:

a determining unit 100, configured to determine a subcarrier mapping manner of a random access preamble sequence according to a subcarrier number occupied by the random access preamble sequence and a subcarrier number of a physical random access channel;

a mapping unit 200, configured to configure, if the number of subcarriers occupied by the random access preamble sequence is less than the number of subcarriers of the physical random access channel, spare subcarriers of M physical random access channels that occupy continuous resources between the continuous resources and subcarriers occupied by other physical channels or physical random access channels of other formats;

it should be noted that the continuous resource is a frequency domain resource occupied by L physical random access channels of the same format, and the vacant subcarriers of M physical random access channels in the L physical random access channels are selected to implement the vacant subcarrier configuration method of the present invention, where M is equal to or less than L. L can be equal to or greater than two, and the embodiment of the invention is not limited at all;

a receiving unit 300, configured to receive the random access preamble sequence sent by the terminal device according to the determined subcarrier mapping manner.

Wherein, the subcarrier mapping mode of the random access leader sequence is pre-stored in the network equipment and the terminal equipment; or

Optionally, the mapping unit 200 is specifically configured to:

will be provided with

when M (K X K1-N) is even, it will be

if the mapping unit 200 configures the free subcarriers of the M physical random access channels at the two ends of the continuous resource at positions adjacent to other physical channels or physical random access channels of other formats, respectively, and the M is equal to the L, the subcarrier mapping manner of the random access preamble sequence is:

Optionally, the mapping unit 200 is specifically configured to:

configuring (M (K × K1-N)) spare subcarriers on one side of the physical random access channel with the number of 0, which is close to other physical channels or physical random access channels with other formats;

if the mapping unit 200 configures the free subcarriers of the M physical random access channels at the start positions of the continuous resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

Optionally, the mapping unit 200 is specifically configured to:

configuring (M (K × K1-N)) spare subcarriers on one side of a physical random access channel with the number L-1, which is close to other physical channels or physical random access channels with other formats;

if the mapping unit configures the free subcarriers of the M physical random access channels at the end position of the continuous resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

The network equipment of the embodiment of the invention can configure the subcarrier mapping mode, so that the vacant subcarriers of M physical random access channels occupying continuous resources can be mapped between the continuous resources and the subcarriers occupied by other channels, thereby reducing the interference of PRACH to other channels and improving the data transmission quality and the transmission efficiency.

Referring to fig. 6, a schematic diagram of a network device according to a second embodiment of the present invention is shown, where the network device includes:

a processor 301, a memory 304, an interface circuit 303, and a bus 302, where the processor 301, the memory 304, and the interface circuit 303 are connected by the bus 302, where the interface circuit 303 is used for the network device to communicate and transmit data with other devices, the memory 304 is used to store a set of program codes, and the processor 301 is used to call the program codes stored in the memory to perform the following operations:

if the number of the sub-carriers occupied by the random access preamble sequence is less than that of the physical random access channel, the spare sub-carriers of the M physical random access channels are configured between the continuous resources and the sub-carriers occupied by the physical random access channels of other physical channels or other formats;

Optionally, the processor 301 is specifically configured to:

will be provided with

when M (K X K1-N) is even, it will be

Optionally, the processor 301 is specifically configured to:

if the free subcarriers of the M physical random access channels are configured at the start positions of the continuous resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is as follows:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

Optionally, the processor 301 is specifically configured to:

configuring the spare subcarriers of the M physical random access channels at the end positions of the continuous resources, specifically including:

if the free subcarriers of the M physical random access channels are configured at the end position of the continuous resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is as follows:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

The network device described in this embodiment may be configured to implement part or all of the processes in the method embodiments described in conjunction with fig. 1 and fig. 2 of the present invention, and perform part or all of the functions in the apparatus embodiment described in conjunction with fig. 5 of the present invention, which is not described herein again.

Referring to fig. 7, a schematic diagram of a terminal device according to a first embodiment of the present invention is shown, where the terminal device according to the embodiment of the present invention includes:

a determining unit 400, configured to determine a subcarrier mapping manner of a random access preamble sequence;

if the number of subcarriers occupied by the random access preamble sequence is less than the number of subcarriers of the physical random access channel, the mapping unit 500 configures the spare subcarriers of the M physical random access channels between the continuous resources and the subcarriers occupied by the physical random access channels of other physical channels or other formats.

A sending unit 600, configured to send the random access preamble sequence to a network device according to the determined subcarrier mapping manner.

Optionally, the mapping unit 500 is specifically configured to:

will be provided with

The spare sub-carriers are configured in the numberThe physical random access channel of 0 is close to one side of other physical channels or physical random access channels of other formats;

when M (K X K1-N) is even, it will be

if the mapping unit 500 configures the free subcarriers of the M physical random access channels at the two ends of the continuous resource at positions adjacent to other physical channels or physical random access channels of other formats, respectively, and the M is equal to the L, then the subcarrier mapping manner of the random access preamble sequence is:

wherein floor represents a rounding-down operation, K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, K is the frequency domain number of resource elements, P is the number of the starting physical resource block of the physical random access channel, N is the number of the starting physical resource_RACHFor the number of the currently selected physical random access channel, n is the element of the random access preamble sequence mapped to resource element kNumbering of the elements.

Optionally, the mapping unit 500 is specifically configured to:

if the mapping unit 500 configures the free subcarriers of the M physical random access channels at the start positions of the continuous resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

Optionally, the mapping unit 500 is specifically configured to:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

The terminal equipment of the embodiment of the invention can allocate the vacant subcarriers of the L physical random access channels occupying the continuous resources between the continuous resources and the subcarriers occupied by other channels, thereby reducing the interference of the PRACH to other channels and improving the data transmission quality and the transmission efficiency.

Please refer to fig. 8, which is a schematic diagram of a terminal device according to a second embodiment of the present invention, where the terminal device includes:

the terminal equipment comprises a processor 401, a memory 404, an interface circuit 403 and a bus 402, wherein the processor 401, the memory 404 and the interface circuit 403 are connected through the bus 402, the interface circuit 403 is used for the terminal equipment to communicate with other equipment and transmit data, the memory 404 is used for storing a group of program codes, and the processor 401 is used for calling the program codes stored in the memory and executing the following operations:

determining a subcarrier mapping mode of a random access leader sequence;

if the number of the sub-carriers occupied by the random access preamble sequence is less than that of the sub-carriers of the physical random access channel, the spare sub-carriers of the M physical random access channels occupying the continuous resources are configured between the continuous resources and the sub-carriers occupied by the physical random access channels of other physical channels or other formats.

Optionally, the processor 401 is specifically configured to:

will be provided with

The spare sub-carriers are configured on a substance with the number of 0The random access channel is close to one side of other physical channels or physical random access channels with other formats;

when M (K X K1-N) is even, it will be

Optionally, the processor 401 is specifically configured to:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

Optionally, the processor 401 is specifically configured to:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}

n＝0,1,....(N-1)

The network device described in this embodiment may be configured to implement part or all of the processes in the method embodiments described in conjunction with fig. 3 and fig. 4 of the present invention, and perform part or all of the functions in the apparatus embodiment described in conjunction with fig. 6 of the present invention, which is not described herein again.

As will be appreciated by one of ordinary skill in the art, various aspects of the invention, or possible implementations of various aspects, may be embodied as a system, method, or computer program product. Furthermore, aspects of the invention, or possible implementations of aspects, may take the form of a computer program product, which refers to computer-readable program code stored in a computer-readable medium.

The computer readable medium may be a computer readable data medium or a computer readable storage medium. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing, such as Random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, and portable read-only memory (CD-ROM).

A processor in the computer reads the computer-readable program code stored in the computer-readable medium, so that the processor can perform the functional actions specified in each step, or a combination of steps, in the flowcharts; and means for generating a block diagram that implements the functional operation specified in each block or a combination of blocks.

The computer readable program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's own computer and partly on a remote computer or entirely on the remote computer or server. It should also be noted that, in some alternative implementations, the functions noted in the flowchart or block diagram block may occur out of the order noted in the figures. For example, two steps or two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.

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

Claims

1. A method of resource allocation, comprising:

if the number of subcarriers occupied by the random access preamble sequence is less than that of subcarriers of a physical random access channel, and the frequency domain resources occupied by L physical random access channels with the same format are a section of continuous resources, allocating spare subcarriers of M physical random access channels in the L physical random access channels with the same format between the continuous resources and subcarriers occupied by other physical channels or physical random access channels with other formats, and mapping the random access preamble sequence at the position of the continuous resources where the spare subcarriers are not allocated, wherein L is an integer greater than or equal to 2, and M is less than or equal to L;

2. The method of claim 1, wherein if there are other physical channels or physical random access channels of other formats at both ends of the continuous resource, the free subcarriers of the M physical random access channels are configured at positions adjacent to the other physical channels or physical random access channels of other formats at both ends of the continuous resource, respectively.

3. The method of claim 2, wherein if the free subcarriers of the M physical random access channels are allocated at two ends of the continuous resource at positions adjacent to other physical channels or physical random access channels of other formats, respectively, and M is equal to L, then a subcarrier mapping manner of the random access preamble sequence is:

wherein floor represents a down rounding operation, K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, K is the frequency domain number of a resource element, P is the number of the starting physical resource block of the physical random access channel, N is the number of the frequency domain_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

4. The method of claim 1, wherein if there are other physical channels or physical random access channels of other formats in positions adjacent to the starting position of the continuous resource and there are no other physical channels or physical random access channels of other formats in positions adjacent to the ending position, the free subcarriers of the M physical random access channels are configured in the starting position of the continuous resource.

5. The method of claim 4, wherein if the free subcarriers of the M physical random access channels are allocated at the start positions of the consecutive resources, and M is equal to L, the subcarriers of the random access preamble sequence are mapped in a manner of:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

6. The method of claim 1, wherein if there are other physical channels or physical random access channels of other formats in positions adjacent to the end position of the continuous resource and there are no other physical channels or physical random access channels of other formats in positions adjacent to the start position, the free subcarriers of the M physical random access channels are configured in the end position of the continuous resource.

7. The method of claim 6, wherein if the free subcarriers of the M physical random access channels are allocated at the end position of the consecutive resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

8. The method of any of claims 1 to 7,

the subcarrier mapping mode of the random access leader sequence is prestored in the network equipment and the terminal equipment; or

9. A method of resource allocation, comprising:

10. The method according to claim 9, wherein if there are other physical channels or physical random access channels of other formats at both ends of the continuous resource, the free subcarriers of the M physical random access channels are configured at positions adjacent to the other physical channels or physical random access channels of other formats at both ends of the continuous resource, respectively.

11. The method according to claim 10, wherein if the free subcarriers of the M physical random access channels are allocated at two ends of the continuous resource at positions adjacent to other physical channels or physical random access channels of other formats, respectively, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

12. The method of claim 9, wherein if there are other physical channels or physical random access channels with other formats in positions adjacent to the starting position of the continuous resource and there are no other physical channels or physical random access channels with other formats in positions adjacent to the ending position, the free subcarriers of the M physical random access channels are configured in the starting position of the continuous resource.

13. The method of claim 12, wherein if the free subcarriers of the M physical random access channels are allocated at the start positions of the consecutive resources, and M is equal to L, the random access preamble sequence is mapped to subcarriers in a manner of:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

wherein K is the number of physical resource blocks occupied by each physical random access channel, K1 is the number of subcarriers of each physical resource block of the physical random access channel, and N is the random access preamble sequenceLength, k is the frequency domain number of the resource element, P is the number of the starting physical resource block of the physical random access channel, n_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

14. The method of claim 9, wherein if there are other physical channels or physical random access channels with other formats in positions adjacent to the end position of the continuous resource and there are no other physical channels or physical random access channels with other formats in positions adjacent to the start position, the free subcarriers of the M physical random access channels are configured in the end position of the continuous resource.

15. The method of claim 14, wherein if the free subcarriers of the M physical random access channels are allocated at the end position of the consecutive resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

16. The method of any of claims 9 to 15,

And the terminal equipment obtains the subcarrier mapping mode of the random access leader sequence from the network equipment through system information or Radio Resource Control (RRC) signaling.

17. A network device, comprising:

a mapping unit, configured to, if the number of subcarriers occupied by the random access preamble sequence is less than the number of subcarriers of a physical random access channel, and frequency domain resources occupied by L physical random access channels of the same format are a segment of continuous resources, allocate spare subcarriers of M physical random access channels of the L physical random access channels of the same format between the continuous resources and subcarriers occupied by other physical channels or physical random access channels of other formats, and map the random access preamble sequence at a position of the continuous resources where spare subcarriers are not allocated, where L is an integer greater than or equal to 2 and M is less than or equal to L;

18. The network device of claim 17, wherein the mapping unit is specifically configured to:

19. The network device of claim 18, wherein if the mapping unit configures the free subcarriers of the M physical random access channels at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource, respectively, then the mapping unit configures the free subcarriers of the M physical random access channels at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource

And the M is equal to the L, the subcarrier mapping mode of the random access preamble sequence is as follows:

20. The network device of claim 17, wherein the mapping unit is specifically configured to:

21. The network device of claim 20, wherein if the mapping unit configures the free subcarriers of the M physical random access channels at the start positions of the consecutive resources, and M is equal to L, the random access preamble sequence is mapped in subcarriers by:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

wherein K is the number of physical resource blocks occupied by each physical random access channelK1 is the number of sub-carriers of each physical resource block of the physical random access channel, N is the length of the random access preamble sequence, K is the frequency domain number of the resource element, P is the number of the initial physical resource block of the physical random access channel, N is the number of the initial physical resource block of the physical random access channel_RACHIs the number of the currently selected physical random access channel and n is the number of the element of the random access preamble sequence mapped to resource element k.

22. The network device of claim 17, wherein the mapping unit is specifically configured to:

23. The network device of claim 22, wherein if the mapping unit configures the free subcarriers of the M physical random access channels at the end position of the continuous resources, and M is equal to L, the random access preamble sequence is mapped in subcarriers by:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

24. The network device of any one of claims 17-23,

25. A terminal device, comprising:

a mapping unit, configured to, if the number of subcarriers occupied by the random access preamble sequence is less than the number of subcarriers of a physical random access channel, and frequency domain resources occupied by L physical random access channels of the same format are a segment of continuous resources, allocate spare subcarriers of M physical random access channels of the L physical random access channels of the same format between the continuous resources and subcarriers occupied by other physical channels or physical random access channels of other formats, and map the random access preamble sequence at a position of the continuous resources where the spare subcarriers are not allocated, where L is an integer greater than or equal to 2, and M is less than or equal to L;

26. The terminal device of claim 25, wherein the mapping unit is specifically configured to:

27. The terminal device of claim 26, wherein if the mapping unit configures the free subcarriers of the M physical random access channels at positions adjacent to other physical channels or physical random access channels of other formats at two ends of the continuous resource, respectively, and M is equal to L, then a subcarrier mapping manner of the random access preamble sequence is:

28. The terminal device of claim 25, wherein the mapping unit is specifically configured to:

29. The terminal device of claim 28, wherein if the mapping unit configures the free subcarriers of the M physical random access channels at the start positions of the consecutive resources, and M is equal to L, the random access preamble sequence is mapped in subcarriers by:

k＝n+K1*(K*n_RACH+P)+(M-n_RACH)*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

30. The terminal device of claim 25, wherein the mapping unit is specifically configured to:

31. The terminal device of claim 30, wherein if the mapping unit configures the free subcarriers of the M physical random access channels at the end position of the continuous resources, and M is equal to L, the subcarrier mapping manner of the random access preamble sequence is:

k＝n+K1*(K*n_RACH+P)-n_RACH*(K*K1-N),n_RACH∈{0,1...M-1}n＝0,1,....(N-1)

32. The terminal device according to any of claims 25-31, wherein the subcarrier mapping scheme of the random access preamble sequence is pre-stored in the network device and the terminal device; or