WO2016029455A1

WO2016029455A1 - Resource allocation method and device

Info

Publication number: WO2016029455A1
Application number: PCT/CN2014/085585
Authority: WO
Inventors: 栗忠峰
Original assignee: 华为技术有限公司
Priority date: 2014-08-29
Filing date: 2014-08-29
Publication date: 2016-03-03
Also published as: CN106170957B; CN106170957A

Abstract

Disclosed are a resource allocation method and device. The method comprises: determining a first transmission time interval (TTI); when a current second TTI of a system is 1/N of the first TTI, determining a mapping relationship between physical resource blocks (PRBs) used for carrying data and virtual resource blocks, the mapping relationship comprising a mapping relationship between a number of a first virtual resource block and numbers of two physical resource blocks (PRBs) for carrying data in one timeslot or a mapping relationship between a number of a first virtual resource block pair and the numbers of the two physical resource blocks (PRBs) for carrying the data in one timeslot; and selecting, by means of the obtained mapping relationship, physical resource blocks corresponding to the numbers of the PRBs to carry data to be sent to a user equipment, and sending downlink control information (DCI) to the user equipment. In this manner, when the value of a current second TTI of the system is 1/N of a first TTI, the granularity of allocating physical resources is adjusted, overheads of downlink control information are reduced, the data transmission time is shortened, and the working efficiency of the system is improved.

Description

Resource allocation method and device

The present invention relates to the field of wireless communication technologies, and in particular, to a resource allocation method and device. Background technique

With the development of wireless communication technologies, there is an increasing demand for communication services, and the demand for communication services requiring relatively high transmission time is increasing. For example, the traditional voice service belongs to the communication service with higher transmission time requirements; the route navigation service and the game interaction service also belong to the communication service with higher transmission time requirements and the like.

In the long-term evolution (English: Long Term Evolution; LTE) communication system, the physical layer uses the lms transmission time interval for the physical downlink shared channel (English: Physical Downlink Shared Channel; abbreviation: PDSCH) that carries data (English: Transmission Time Interval; Abbreviation: TTI) for data transmission. The transmission time interval of the lms corresponds to the time of one subframe in the LTE system.

Specifically, since the downlink transmission uses the Orthogonal Frequency Division Multiple Access (OFDM) access technology in the LTE system, the minimum allocation unit of the resource is defined as a resource element (English: Resource Element) ; Abbreviation: RE). The time domain of one resource element corresponds to one OFDM symbol, and the frequency domain corresponds to one subcarrier. The interval is lms.

However, lms has a longer time length for communication services with higher transmission time requirements. In the LTE system, for communication services with higher transmission time requirements, the transmission time interval of lms will cause data transmission delay, resulting in system resources. It is wasteful, and makes these users with poor communication time requirements have a poor user experience.

It can be seen that there is a need for a resource allocation method based on a transmission time interval less than a lms scenario, which is used to solve the problem that the existing data transmission delay is long and the system resources are wasted. Summary of the invention

In view of this, the embodiments of the present invention provide a resource allocation method and device, which are used to solve the problem that the current data transmission delay is long and the system resources are wasted.

According to a first aspect of the present invention, a resource allocation device is provided, including:

a time determining module, configured to determine a first transmission time interval ΤΉ;

a mapping relationship determining module, configured to determine a mapping relationship between a physical resource block PRB and a virtual resource block for carrying data when the current second TTI of the system is the first TTI of N, wherein the mapping relationship includes a mapping relationship between the first virtual resource block number and two PRB numbers carrying data in one slot, or a mapping between the number of the first virtual resource block pair and the two PRB numbers carrying data in one slot Relationship, N is a positive integer greater than one;

a sending module, configured to: use the mapping relationship, select a physical resource block corresponding to the PRB number to carry data to be sent to the user equipment, and send downlink control information DCI to the user equipment, where the DCI includes the bearer The first virtual resource block number corresponding to the PRB number of the data selection to be sent to the user equipment.

With reference to the possible implementation manners of the first aspect of the present invention, in a first possible implementation, the mapping relationship determining module is specifically configured to: establish a first virtual resource block number and bear data in a time slot by: The mapping relationship between two PRB numbers:

Determining an interval parameter GAP value, and using the GAP value, obtaining a total number of second virtual resource block numbers;

Determining a size value of the interleaving unit, and obtaining, according to the size value of the interleaving unit and the total number of the second virtual resource block numbers, the number of the first virtual resource block number included in the interleaving unit;

And determining the first virtual resource block number included in the determined interleaving unit according to a rule of a consecutive parity group, and writing the grouped first virtual resource block number to the interleaving unit according to a progressive write manner ;

Reading the first virtual resource block number sequentially from the interleaving unit in a column-by-column order, and sequentially establishing the read first virtual resource block number and the bearer data in one time slot according to the reading order. The mapping relationship between PRB numbers.

With reference to the first possible implementation manner of the first aspect of the present invention, in a second possible implementation manner, the mapping relationship determining module is specifically configured to obtain, by using the following manner, a first virtual Number of resource block numbers:

d Nf (N _null / IT N / 2

Wherein, the number of the first virtual resource block number included in the interleaving unit is ; Ν _Ί is the size value of the interleaving unit, N is the number of columns of the interleaving unit, and N _ff is the number of rows of the interleaving unit, and ^^ is the second virtual

The total number of resource block numbers.

With reference to the first possible implementation manner of the first aspect of the present invention, or the second possible implementation manner of the first aspect of the present invention, in a third possible implementation manner, the mapping relationship determining module, specifically For sequentially reading out the first virtual resource block number from the interleaving unit in a column-by-column order, and determining that the read first virtual resource block number has not reached half of the total number of the second virtual resource block number, Establishing a mapping relationship between the read first virtual resource block number and two PRB numbers of data carried in one slot;

When it is determined that the read first virtual resource block number exceeds half of the total number of the second virtual resource block number, the read first virtual resource block number is increased by a set value, and the first value after the set value is established is established. A mapping relationship between a virtual resource block number and two PRB numbers carrying data in a time slot, wherein the set value is a difference between a GAP value and a half of a total number of second virtual resource block numbers.

With reference to the possible implementation manners of the first aspect of the present invention, in a fourth possible implementation, the mapping relationship determining module is specifically configured to: establish a first virtual resource block number and bear data in a time slot by: Mapping between two physical resource block PRB numbers:

Establishing a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers in an order of the first virtual resource block number, and establishing an odd number of the first virtual resource block and a mapping relationship between two second virtual resource block numbers, where the two second virtual resource block numbers are two consecutive if the first virtual resource block number is even An even number; if the first virtual resource block number is an odd number, then the two second virtual resource block numbers are two consecutive odd numbers;

Obtaining a first virtual resource block number corresponding to the second virtual resource block number and carrying data in a time slot according to a mapping relationship between the second virtual resource block number and the two PRB numbers of the bearer data in one time slot The mapping relationship between two PRB numbers.

With reference to the fourth possible implementation manner of the first aspect of the present invention, in a fifth possible implementation manner, the mapping relationship determining module is specifically configured to be established according to the sequence of the first virtual resource block number in the following manner. a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers, and establishing a mapping relationship between the first virtual resource block odd number and the two second virtual resource block numbers, including: 5

The first virtual resource block number is a second virtual resource block number.

With reference to the possible implementation manners of the first aspect of the present invention, in a sixth possible implementation, the mapping relationship determining module is specifically configured to establish, by using the following manner, a first virtual resource block number and a time slot carrying data Mapping between two physical resource block PRB numbers:

Determining a correspondence between the first virtual resource block number and two second virtual resource block numbers in one time slot, where the two second virtual resource block numbers are the same as the same PRB number in the two time slots Two virtual resource block numbers;

Obtaining, according to a mapping relationship between each of the second virtual resource block numbers and the PRB number, between the first virtual resource block number corresponding to the second virtual resource block number and the two PRB numbers of the bearer data in one time slot. Mapping relations.

In conjunction with a possible embodiment of the first aspect of the invention, or in combination with a first possible embodiment of the first aspect of the invention, or a second possible embodiment of the first aspect of the invention, or in combination with the invention A third possible implementation of the first aspect, or a fourth possible implementation of the first aspect of the invention, or a fifth possible implementation of the first aspect of the invention, or A sixth possible implementation of the first aspect of the invention, In a seventh possible implementation manner, the mapping relationship determining module is further configured to determine a mapping relationship between a resource element group and a PRB for carrying control signaling, where the mapping relationship includes a resource element group a mapping relationship between the number and two PRB numbers carrying control signaling in one slot;

The sending module is specifically configured to use the obtained mapping relationship to select a physical resource bearer corresponding to the resource element group number to send downlink control information DCI.

With reference to the seventh possible implementation manner of the first aspect of the present invention, in the eighth possible implementation, the mapping relationship determining module is specifically configured to establish a resource element group number and a time slot bearer in the following manner Mapping between two PRB numbers of control signaling:

For each resource element group number, select two PRB numbers whose number interval within the time slot satisfies the GAP value;

Establish a mapping relationship between the resource element group number and the selected two PRB numbers.

In conjunction with a possible embodiment of the first aspect of the invention, or in combination with a first possible embodiment of the first aspect of the invention, or a second possible embodiment of the first aspect of the invention, or in combination with the invention A third possible implementation of the first aspect, or a fourth possible implementation of the first aspect of the invention, or a fifth possible implementation of the first aspect of the invention, or A sixth possible embodiment of the first aspect of the invention, or a seventh possible embodiment of the first aspect of the invention, or an eighth possible embodiment of the first aspect of the invention, In the nine possible implementation manners, the first ΤΉ is lms, and the second TTI is one-half ms.

According to a second aspect of the present invention, a resource allocation device is provided, including: an obtaining module, configured to acquire downlink control information (DCI) sent by a base station device, where the DCI includes a bearer to be sent to a user equipment. The virtual resource block number corresponding to the PRB number of the data selection;

a determining module, configured to determine a mapping relationship between a physical resource block PRB for carrying data and a virtual resource block number when the current second time transmission interval TTI of the system is the first ninth of N minutes, where the mapping The relationship includes the first virtual resource block number and two data carrying data in one time slot. a mapping relationship between the physical resource block PRB numbers, or a mapping relationship between the number of the first virtual resource block pair and the two physical resource block PRB numbers carrying data in one slot, where N is a positive integer greater than one; Determining, according to the mapping relationship, a PRB number corresponding to the virtual resource block number included in the DCI;

And a receiving module, configured to acquire data sent by the base station device on the determined physical resource corresponding to the PRB number.

In conjunction with the possible implementation of the second aspect of the present invention, in a first possible implementation, the resource allocation device further includes: an adjustment module, where:

And the adjusting module is configured to: after determining the PRB number corresponding to the virtual resource block number included in the DCI, adjust the determined number of PRBs corresponding to the PRB number by using a set scale factor, where the adjusted PRB belongs to PRB in one time slot.

With reference to the first possible implementation manner of the second aspect of the present invention, in the second possible implementation manner, the adjusting module is specifically configured to obtain the adjusted number of PRBs by:

N _PRB *a, l]

;

N _PRB is the number of adjusted PRBs, _ΡΗΒ is the number of PRBs corresponding to the determined PRB numbers, and α is a scale factor.

According to a third aspect of the present invention, a resource allocation device is provided, including:

a processor, configured to determine a first transmission time interval ΤΤΙ; when a current second 系统 of the system is a first Ν, determining a mapping relationship between the physical resource block PRB for carrying data and the virtual resource block, where The mapping relationship includes a mapping relationship between the first virtual resource block number and two PRB numbers of the bearer data in one time slot, or two numbers of the first virtual resource block pair and two data carriers in one time slot. The mapping relationship between the PRB numbers, Ν is a positive integer greater than 1; using the mapping relationship, the physical resource block corresponding to the PRB number is selected to carry data to be sent to the user equipment;

a signal transmitter, configured to send downlink control information (DCI) to the user equipment, where the DCI includes a first virtual space corresponding to a PRB number selected for carrying data to be sent to the user equipment. The proposed resource block number.

With reference to a possible implementation manner of the third aspect of the present invention, in a first possible implementation, the processor is specifically configured to establish, by using the following manner, a first virtual resource block number and two bearer data in one time slot. Mapping relationship between physical resource block PRB numbers:

Reading the first virtual resource block number sequentially from the interleaving unit in a column-by-column order, and sequentially establishing the read first virtual resource block number and the two PRB numbers of the bearer data in one slot in the read order. The mapping relationship between.

With reference to the first possible implementation manner of the third aspect of the present invention, in a second possible implementation, the processor is specifically configured to obtain the first virtual resource block included in the interleaving unit by: Number of numbers:

d Nf (N _null / IT N / 2

The total number of resource block numbers.

With reference to the first possible implementation manner of the third aspect of the present invention, or the second possible implementation manner of the third aspect of the present invention, in a third possible implementation manner, the processor is specifically used to Reading the first virtual resource block number from the interleaving unit in sequence, in a column-by-column order, When it is determined that the read first virtual resource block number has not reached half of the total number of the second virtual resource block number, the read first virtual resource block number and the two PRB numbers of the bearer data in one time slot are established. Mapping relationship between

With reference to a possible implementation manner of the third aspect of the present invention, in a fourth possible implementation, the processor is specifically configured to establish, by using the following manner, a first virtual resource block number and two bearer data in one time slot. Mapping relationship between physical resource block PRB numbers:

Establishing a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers in an order of the first virtual resource block number, and establishing an odd number of the first virtual resource block and a mapping relationship between two second virtual resource block numbers, where the two second virtual resource block numbers are two consecutive even numbers if the first virtual resource block number is an even number; When the resource block number is an odd number, then the two second virtual resource block numbers are two consecutive odd numbers;

With reference to the fourth possible implementation manner of the third aspect of the present invention, in a fifth possible implementation, the processor is specifically configured to establish the first in the order of the first virtual resource block number in the following manner. a mapping relationship between the even number of the virtual resource block and the two second virtual resource block numbers, and establishing a mapping relationship between the odd number of the first virtual resource block and the two second virtual resource block numbers, including: 5

The first virtual resource block number is a second virtual resource block number. With reference to the possible implementation manner of the third aspect of the present invention, in a sixth possible implementation, the processor is specifically configured to establish, by using the following manner, a first virtual resource block number and two bearer data in one time slot. Mapping relationship between physical resource block PRB numbers:

In conjunction with a possible embodiment of the third aspect of the invention, or in combination with a first possible embodiment of the third aspect of the invention, or a second possible embodiment of the third aspect of the invention, or in combination with the invention A third possible implementation of the third aspect, or a fourth possible implementation of the third aspect of the invention, or a fifth possible implementation of the third aspect of the invention, or A sixth possible implementation manner of the third aspect of the present invention, in a seventh possible implementation, the processor is further configured to determine a mapping relationship between a resource element group and a PRB for carrying control signaling The mapping relationship includes a mapping relationship between a resource element group number and two PRB numbers of bearer control signaling in one slot;

The signal transmitter is configured to use the obtained mapping relationship to select a physical resource bearer corresponding to the resource element group number to send downlink control information DCI.

With reference to the seventh possible implementation manner of the third aspect of the present invention, in the eighth possible implementation, the processor is specifically configured to establish a resource element group number and a time slot bearer control signal by: The mapping between the two PRB numbers of the order:

A possible embodiment of a third aspect of the invention, or a first possible embodiment of the third aspect of the invention, or a second possible embodiment of the third aspect of the invention Or a third possible embodiment incorporating the third aspect of the invention, or a fourth possible embodiment incorporating the third aspect of the invention, or a fifth possible combination of the third aspect of the invention Embodiment, or a sixth possible implementation of the third aspect of the invention, or a seventh possible implementation of the third aspect of the invention, or an eighth possible aspect of the third aspect of the invention In a ninth possible implementation manner, the first ΤΉ is lms, and the second TTI is one-half ms.

According to a fourth aspect of the present invention, a resource allocation device is provided, including: a processor, configured to acquire downlink control information (DCI) sent by a base station device, where the DCI includes a bearer to be sent to a user equipment. The virtual resource block number corresponding to the PRB number of the data selection; when the current second time transmission interval TTI of the system is the first TTI of N, the mapping between the physical resource block PRB for carrying data and the virtual resource block number is determined. Relationship, where the mapping relationship includes a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one slot, or a number of the first virtual resource block pair and a time slot a mapping relationship between two physical resource block PRB numbers in which the data is carried, and N is a positive integer greater than 1. According to the mapping relationship, a PRB number corresponding to the virtual resource block number included in the DCI is determined;

And a signal receiver, configured to acquire data sent by the base station device on the determined physical resource corresponding to the PRB number.

With reference to the possible implementation manner of the fourth aspect of the present invention, in the first possible implementation manner, after the number, the determined number of PRBs corresponding to the PRB number is adjusted by using the set scale factor, where the adjusted The PRB belongs to a PRB in one slot.

With reference to the first possible implementation manner of the fourth aspect of the present invention, in a second possible implementation, the processor is specifically configured to obtain the adjusted number of PRBs by:

N _PRB *a, l]

;

Wherein, N _PRB is the number of adjusted PRBs, and _ΡΗΒ is determined by the determined PRB number. The number of PRBs, and α is the scale factor.

According to a fifth aspect of the present invention, a resource allocation method is provided, including:

Determining the first transmission time interval ΤΉ;

Determining a mapping relationship between a physical resource block PRB for carrying data and a virtual resource block, where the current second ΤΤΙ is the first Ν, wherein the mapping relationship includes the first virtual resource block number a mapping relationship between two PRB numbers carrying data in one slot, or a mapping relationship between a number of a first virtual resource block pair and two PRB numbers carrying data in one slot, where Ν is greater than 1. Positive integer

And using the mapping relationship, the physical resource block corresponding to the PRB number is configured to carry the data to be sent to the user equipment, and the downlink control information DCI is sent to the user equipment, where the DCI includes the bearer to be sent to the user equipment. The first virtual resource block number corresponding to the PRB number of the selected data.

With reference to the possible implementation manners of the fifth aspect of the present invention, in the first possible implementation manner, the first virtual resource block number is established between the first virtual resource block number and the two physical resource block PRB numbers carrying data in one time slot. Mapping relations:

In conjunction with the first possible implementation of the fifth aspect of the invention, in a second possible implementation In the manner, the number of the first virtual resource block number included in the interleaving unit is obtained by: d Nf (N _null / IT N / 2

The total number of resource block numbers.

With reference to the first possible implementation manner of the fifth aspect of the present invention, or the second possible implementation manner of the fifth aspect of the present invention, in a third possible implementation manner, the When the EVRB numbers are sequentially read out in a column-by-column order, a mapping relationship between each of the first virtual resource block numbers and two PRB numbers of the bearer data in one time slot is established, including:

And sequentially reading out the first virtual resource block number from the interleaving unit according to the column-by-column order, and establishing reading when determining that the read first virtual resource block number has not reached half of the total number of the second virtual resource block number a mapping relationship between the first virtual resource block number and two PRB numbers carrying data in one slot;

With reference to the possible implementation manner of the fifth aspect of the present invention, in a fourth possible implementation manner, the first virtual resource block number is established between the first virtual resource block number and the two physical resource block PRB numbers carrying data in one time slot. Mapping relations:

Establishing a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers in an order of the first virtual resource block number, and establishing an odd number of the first virtual resource block and a mapping relationship between two second virtual resource block numbers, where the two second virtual resource block numbers are two consecutive even numbers if the first virtual resource block number is an even number; When the resource block number is an odd number, then the two second virtual resources The block number is two consecutive odd numbers;

With reference to the fourth possible implementation manner of the fifth aspect of the present invention, in the fifth possible implementation manner, the first virtual resource block even number and the two are established in the order of the first virtual resource block number in the following manner. a mapping relationship between the second virtual resource block numbers, and establishing a mapping relationship between the first virtual resource block odd number and the two second virtual resource block numbers, including: 5

With reference to the possible implementation manner of the fifth aspect of the present invention, in a sixth possible implementation manner, the first virtual resource block number is established between the first virtual resource block number and the two physical resource block PRB numbers carrying data in one time slot. Mapping relations:

In conjunction with a possible embodiment of the fifth aspect of the invention, or in combination with a first possible embodiment of the fifth aspect of the invention, or a second possible embodiment of the fifth aspect of the invention, or in combination with the invention A third possible implementation of the fifth aspect, or a fourth possible implementation of the fifth aspect of the invention, or a fifth possible implementation of the fifth aspect of the invention, or A sixth possible implementation manner of the fifth aspect of the present invention, in a seventh possible implementation, the sending, by the user equipment, the downlink control information DCI, the method includes: determining a resource element group and a PRB for carrying control signaling Mapping relationship between The mapping relationship includes a mapping relationship between a resource element group number and two PRB numbers carrying control signaling in one slot;

The physical resource bearer corresponding to the resource element group number is selected to send the downlink control information DCI by using the obtained mapping relationship.

With reference to the seventh possible implementation manner of the fifth aspect of the present invention, in the eighth possible implementation manner, the resource element group number is established between the two PRB numbers of the bearer control signaling in one time slot. Mapping relationship:

In conjunction with a possible embodiment of the fifth aspect of the invention, or in combination with a first possible embodiment of the fifth aspect of the invention, or a second possible embodiment of the fifth aspect of the invention, or in combination with the invention A third possible implementation of the fifth aspect, or a fourth possible implementation of the fifth aspect of the invention, or a fifth possible implementation of the fifth aspect of the invention, or A sixth possible embodiment of the fifth aspect of the invention, or a seventh possible embodiment of the fifth aspect of the invention, or an eighth possible embodiment of the fifth aspect of the invention, In the nine possible implementation manners, the first ΤΉ is lms, and the second TTI is one-half ms.

According to a sixth aspect of the present invention, a resource allocation method is provided, including: acquiring downlink control information DCI sent by a base station device, where the DCI includes a PRB number selected for carrying data to be sent to the user equipment. Corresponding virtual resource block number;

When the current second time transmission interval TTI of the system is the first TTI of N, the mapping relationship between the physical resource block PRB for carrying data and the virtual resource block number is determined, where the mapping relationship includes the first The mapping relationship between the virtual resource block number and the two physical resource block PRB numbers carrying data in one slot, or the number of the first virtual resource block pair and the two physical resource blocks PRB number carrying data in one slot The mapping relationship between N, N is a positive integer greater than 1;

Determining, according to the mapping relationship, a PRB corresponding to the virtual resource block number included in the DCI Numbering;

Obtaining data sent by the base station device on the determined physical resource corresponding to the PRB number.

With reference to the possible implementation manners of the sixth aspect of the present invention, in a first possible implementation manner, after determining the PRB number corresponding to the virtual resource block number included in the DCI, the method further includes:

The determined number of PRBs corresponding to the PRB number is adjusted by using the set scale factor, wherein the adjusted PRB belongs to the PRB in one slot.

With reference to the first possible implementation manner of the sixth aspect of the present invention, in the second possible implementation manner, the determining, by using the set scaling factor, the determined number of PRBs corresponding to the determined PRB number, including:

The number of PRBs adjusted by the following methods is:

N _PRB *a, l]

;

The embodiment of the present invention determines the first transmission time interval ΤΤΙ; when the current second 系统 of the system is the first Ν, the mapping relationship between the physical resource block PRB and the virtual resource block for carrying data is determined, where The mapping relationship includes a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one slot, or a number of the first virtual resource block pair and a data carried in a time slot. The mapping between the two physical resource block PRB numbers; the physical resource block corresponding to the PRB number is used to carry the data to be sent to the user equipment, and the downlink control information DCI is sent to the user equipment, In this way, when the current second value of the system is the first one, the physical resource allocation granularity is adjusted, the overhead of the downlink control information is reduced, and the data transmission time is shortened, thereby improving the working efficiency of the system. DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following drawings will be briefly described in the description of the embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying creative labor.

FIG. 1 is a schematic flowchart of a resource allocation method according to Embodiment 1 of the present invention; FIG. 2 is a schematic structural diagram of an intersection unit;

Figure 3 is a sequence of EVRB numbers read from the interleaving unit;

4 is a schematic diagram showing a mapping relationship between the obtained EVRB number and the PRB number;

FIG. 5 is a schematic flowchart of a resource allocation method according to Embodiment 2 of the present invention; FIG. 6 is a schematic structural diagram of a resource allocation device according to Embodiment 3 of the present invention; FIG. 8 is a schematic structural diagram of a resource allocation device according to Embodiment 5 of the present invention; FIG. 9 is a schematic structural diagram of a resource allocation device according to Embodiment 6 of the present invention. detailed description

In order to achieve the object of the present invention, an embodiment of the present invention provides a resource allocation method and device, by determining a first transmission time interval TTI; and determining, when the current second TTI of the system is the first of N minutes, a mapping relationship between a physical resource block PRB and a virtual resource block of the data, where the mapping relationship includes a mapping relationship between the first virtual resource block number and two physical resource block PRB numbers carrying data in one slot Or a mapping relationship between the number of the first virtual resource block pair and the two physical resource block PRB numbers carrying the data in one time slot; using the obtained mapping relationship, selecting the physical resource block bearer corresponding to the PRB number to be sent And sending the downlink control information DCI to the user equipment, so that when the current second TTI of the system is the first TTI of N, the physical resource allocation granularity is adjusted, and the overhead of the downlink control information is reduced. Improve system efficiency by reducing data transfer time.

The various embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. Based on the present invention All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

Embodiment 1:

FIG. 1 is a schematic flowchart diagram of a resource allocation method according to Embodiment 1 of the present invention. The method can be as follows.

Step 101: The base station device determines a first transmission time interval ( ΤΉ ).

In step 101, since the ΤΤΙ specified in the current LTE system is generally 1 ms, the first TTI determined by the base station device is the TTI specified in the protocol, which may be lms.

Step 102: The base station device determines, when the second TTI of the current system is the first TTI of the N, determines a mapping relationship between the physical resource block PRB for carrying data and the virtual resource block.

The resource block mapping of the bearer data includes a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one slot, or a number of the first virtual resource block pair and one A mapping relationship between two physical resource block PRB numbers carrying data in a time slot.

In the step 102, the second TTI of the current system of the base station device in the embodiment of the present invention is the first TTI specified by the protocol, because the time length of the communication service required by the current protocol is relatively long. One of N, where N is a positive integer greater than one.

The shortening of the transmission time interval means a change in the way resources are allocated in the system.

In the embodiment of the present invention, a detailed description of the following steps is performed by taking the current TTI value of the system as 0.5 ms as an example.

It should be noted that the first virtual resource block may be referred to as an enhanced virtual resource block (English: Enhanced Virtual Resource Block; abbreviation: EVRB).

Since the base station device uses a transmission time interval shorter than 1 ms, the resource allocation granularity is adjusted according to the transmission time interval, and the signaling overhead of the downlink control information is effectively reduced.

Specifically, the first mode: the base station device establishes a mapping relationship between the first virtual resource block number and two PRB numbers of the bearer data in one time slot.

The second mode: the base station device establishes the number of the first virtual resource block pair and the bearer in one time slot. The mapping relationship between the two PRB numbers of the data.

For the above two modes, two PRB numbers carrying data in one slot may be two consecutive PRB numbers, or may be two non-contiguous PRB numbers.

The mapping relationship between a first virtual resource block (pair) number and two consecutive PRB numbers carrying data in one slot is also referred to as a centralized resource mapping relationship; a first virtual resource block (pair) The mapping relationship between the number and the non-contiguous two PRB numbers carrying data in one slot is also referred to as a distributed resource mapping relationship.

For example, for a centralized resource mapping relationship, the number of the first virtual resource block number is equal to one-half of the number of the PRB number, and the number of the PRB number ranges from 0 to N^-1. The number of resource blocks (English: Resource Block; Abbreviation: RB) used to transmit downlink data may also be referred to as a bandwidth configuration parameter.

The mapping relationship between the obtained first virtual resource block number and two consecutive PRB numbers carrying data in one slot is: EVRB{0}<->PRB{0,1}; EVRB{l}<-> PRB {2,3 }; EVRB{2}<-> PRB {4,5}, etc.

The mapping relationship between the obtained first virtual resource block pair number and two consecutive PRB numbers of bearer data in one slot is: EVRB{0,0}<->PRB{0,1}; EVRB{l, l}<-> PRB {2,3 }; EVRB{2,2}<->PRB{4,5}, etc.

For a distributed resource mapping relationship, a mapping relationship between a first virtual resource block (pair) number and a non-contiguous PRB number of data carried in a time slot, then a difference between two consecutive PRB numbers The interval parameter (GAP) value defined by the LTE protocol is satisfied.

It should be noted that the size of the GAP value is specified in the LTE protocol depending on the system bandwidth. For example: As shown in Table 1, the GAP values are different according to different system bandwidths:

System bandwidth (w^) GAP (value

GAP1(U GAP2(N _QAP , ₂ ) value

6-10 " ^L /2] N/A

11 4 N/A

12-19 8 N/A 20 -26 12 N/A

Th -44 18 N/A

45' -49 27 N/A

50 -63 27 9

64' -19 32 16

80~ 110 48 16

Table 1

Assuming that the difference between two consecutive PRB numbers is 18, the mapping relationship between the obtained first virtual resource block number and the non-contiguous two PRB numbers carrying data in one slot is as shown in Table 2:

Table 2

Specifically, the manner in which the base station device establishes a mapping relationship between a first virtual resource block number and two PRB numbers of data carried in a time slot includes:

Step 1: Determine the interval parameter (GAP) value, and use the GAP value to obtain the total number of the second virtual resource block number.

It should be noted that the second virtual resource block is also referred to as a virtual resource block (English: Virtual Resource Block; abbreviation: VRB).

Step 2: determining a size value of the interleaving unit, and obtaining, according to the size value of the interleaving unit and the total number of the second virtual resource block number, the number of the first virtual resource block number included in the interleaving unit .

Specifically, according to the size value of the interleaving unit and the second virtual asset The total number of source block numbers is obtained by the number of first virtual resource block numbers included in the interleaving unit: where 3⁄4^ is the number of the first virtual resource block number included in the interleaving unit; Ν Ν _Ί is interlaced The size of the unit, N is the number of columns of the interleaved unit, generally takes the value of 4; N _ff is the number of rows of the interleaved unit, and N lines

'p , P is the number of resource blocks set; N „„„ = 4*N _ff _73⁄4 , ^^ is the total number of the second virtual resource block number.

The third step: grouping the determined first virtual resource block number included in the interleaved unit according to a rule of a consecutive parity group, and writing the grouped first virtual resource block number in a progressive write manner The interleaving unit.

The fourth step: sequentially reading the first virtual resource block number in the column-by-column order from the interleaving unit, and sequentially establishing the read first virtual resource block number and the bearer data in one time slot according to the reading order. The mapping relationship between PRB numbers.

Specifically, the first virtual resource block number is sequentially read out from the interleaving unit in a column-by-column order, and when it is determined that the read first virtual resource block number has not reached half of the total number of the second virtual resource block number Establishing a mapping relationship between the read first virtual resource block number and two PRB numbers carrying data in one slot;

For example, if the system bandwidth is 28 RB, according to the LTE protocol, the GAP value N _QAP is 18, the value is 20, the number of columns of the intersection unit is 4, and the number of rows is 6, wherein the number of rows filling M and N is 2. As shown in FIG. 2, it is a schematic structural diagram of an intersection unit.

According to the above formula, the number of the first virtual resource block is obtained = (N, -{N _null Ι2ΥΝ, ΛΙ2, and the number of the first virtual resource blocks is 8 is calculated, that is, The number is 0~7. The first virtual resource block number is grouped according to the rule of the numbered parity group, and the first virtual resource block number sequence 0101123345456767 is repeatedly obtained. The sequence is written column by column into the interleaving unit in a column-by-column manner, and M, 2, and 4 columns are filled in the first and third columns of the last two rows of the interleaved unit.

The first virtual resource block number including M is read out from the interleaving unit in columns to obtain a new sequence 0246MM1357 0246MM1357, as shown in Fig. 3, which is a sequence of first virtual resource block numbers read from the interleaving unit.

The sequence begins with a repeating digit at the middle position (ie, the position where the second occurrence of 0) is shifted backward by 18-10=8 RB positions, and the offset first virtual resource block number sequence (ie 0246MM1357XXXXXXXX0246MM1357) Corresponding to the PRB number starting from 0, determining the PRB number corresponding to each first virtual resource block number in the first virtual resource block number sequence after the offset, that is, obtaining the first virtual resource block number The mapping relationship with the PRB number.

As shown in Fig. 4, a schematic diagram of the mapping relationship between the obtained first virtual resource block number and the PRB number.

In another embodiment of the present invention, a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one slot is established in the following manner:

Step 1: In a time slot, according to the order of the first virtual resource block number, establish a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers, and establish a first virtual resource. A mapping relationship between a block odd number and two second virtual resource block numbers.

Wherein, if the first virtual resource block number is an even number, then the two second virtual resource block numbers are two consecutive even numbers; if the first virtual resource block number is an odd number, then the two second The virtual resource block number is two consecutive odd numbers.

Specifically, the mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers is established in the order of the first virtual resource block number, and the establishment of the first virtual resource block odd number and The mapping relationship between the two second virtual resource block numbers includes: ⁵

Second, the first virtual resource block number corresponding to the second virtual resource block number and one time slot bearer are obtained according to the mapping relationship between the second virtual resource block number and the two PRB numbers of the bearer data in one time slot. The mapping relationship between the two PRB numbers of the data.

As shown in Table 3, in order to establish a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers, and establish a first virtual resource block odd number and two second virtual resource block numbers. Schematic diagram of the mapping relationship between the two.

table 3

Step 103: The base station device uses the obtained mapping relationship to select a physical resource block corresponding to the PRB number to carry data to be sent to the user equipment, and send downlink control information to the user equipment. DCI.

The DCI includes a first virtual resource block number corresponding to a PRB number selected to carry data to be sent to the user equipment.

In step 103, the manner of sending the downlink control information DCI to the user equipment includes but is not limited to:

Determining a mapping relationship between a resource element group and a PRB for carrying control signaling, where the mapping relationship includes mapping between a resource element group number and two PRB numbers of bearer control signaling in one slot Relationship

The physical resource bearer corresponding to the resource element group number is selected to transmit the downlink control information DCI by using the obtained mapping relationship.

Since one DCI transmission corresponds to one or more control channel elements (CCE;). One control channel element is carried by four or eight resource element groups.

If the centralized transmission method is used, the two PRBs corresponding to the resource resource element group are continuous, or one pair of PRBs are continuous. Then when transmitting DCI, it can be a pair of PRB or a pair of consecutive P chaos.

If the distributed transmission method is used, two or one pair of PRB numbers of the resource element group are discrete. When transmitting DCI, it may be a pair of discontinuous PRBs or multiple pairs of discontinuous PRBs.

Specifically, the mapping relationship between the resource element group number and the two PRB numbers carrying control signaling in one slot is established in the following manner:

For each resource element group number, select two PRB numbers whose number interval within the time slot satisfies the GAP value.

The two PRB numbers carrying control signaling in one time slot satisfy the interval GAP value. Specifically, establishing a mapping relationship between a resource element group number and two PRB numbers carrying control signaling in a time slot includes establishing two resource element group numbers and two consecutive PRBs carrying bearer control signaling in one time slot. Mapping relationship between numbers; or establishing a mapping relationship between a resource element group number and two non-contiguous PRE numbers carrying control signaling in one slot. Here, if it is a non-contiguous PRB number, then a non-contiguous PRB Numbered value interval GAP value. It should be noted that the resource element group may be a REG (English: Resource Element Group), an enhanced REG, or a FEREG, which is not limited herein.

For example: Establish a mapping relationship between a resource element group number and two consecutive PRB numbers carrying control signaling in one slot.

In each time slot, each PRB pair corresponds to 16 resource element group numbers (ie, 0~15), and a PRB pair contains DMRS (English: Demodulation Reference Signal; Chinese: demodulation reference signal) (normal CP port number is 107, 108, 109, and 110; REs with extended CP port numbers other than 107, 108) are cyclically numbered from 0 to 15, sequentially from frequency domain resources to time domain resources.

Further, the resource element groups can be grouped. For example, a PRB pair can be grouped into {0,4,8,12}, {1,5,9,13}, {2,6,0,4}, {3,7,11,15}. Each group of resource element groups corresponds to one CCE (English: Control Channel Element; Chinese: Control Channel Element). The DCI is carried by a resource element group corresponding to one or more CCEs. Multiple CCEs can be on different PRB pairs.

For example: Establish a mapping relationship between a resource element group number and two discontinuous PRBs carrying control signaling in one slot.

The interval between discontinuous PRBs is the GAP value defined by LTE.

Each PRB pair corresponds to 16 resource element numbers (ie, 0~15) in one slot, except for DMRS in a PRB pair (English: Demodulation Reference Signal; Chinese: demodulation reference signal) (normal CP port number is 107) , 108, 109, and 110; REs with extended CP port numbers other than 107, 108) are cyclically numbered from 0 to 15, sequentially from frequency domain resources to time domain resources.

Further, resource element groups can be grouped. For example, a PRB pair can be grouped into {0,4,8,12}, {1,5,9,13}, {2,6,0,4}, {3,7,11,15}. It is also possible to group resource element groups of multiple PRB pairs. For example, each resource element group group is composed of resource element groups of 4 PRB pairs, such as resource element group 0, 4 in {0, 4, 8, 12}. , 8, 12 are from 4 PRB pairs. Each group of resource element groups corresponds to one CCE. The DCI is carried out by a resource element group corresponding to one or more CCEs. Multiple CCEs can be on different PRB pairs.

The base station device establishes a resource element group number and two PRBs that carry control signaling in one time slot. After the mapping relationship between the numbers, it can be determined according to the prior art as described above.

The mapping between the CCE/ECCE and the resource element group number further obtains a mapping relationship between the CCE/ECCE and the two PRB numbers of the bearer control signaling in one time slot.

In addition, the resource allocation manner corresponding to the control signaling may be based on the resource mapping relationship of the control signaling established in the TTI of 1 ms (ie, the ECCE of the EPDCCH, the mapping of the EREG to the PRB), and obtain the ECCE included in one slot thereof. The RE is used as a transmission resource for Tms of 0.5 ms control signaling.

The first transmission time interval TTI is determined by using the solution of the first embodiment of the present invention. When the current second TTI of the system is the first TTI of N, the physical resource block PRB for carrying data is determined between the virtual resource block and the virtual resource block. a mapping relationship, where the mapping relationship includes a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one slot, or a number of the first virtual resource block pair and a time The mapping between the two physical resource block PRB numbers carrying the data in the slot; using the obtained mapping relationship, the physical resource block corresponding to the PRB number is selected to carry data to be sent to the user equipment, and the downlink is sent to the user equipment. Controlling the information DCI, so that when the current second TTI of the system is the first TTI of N, the physical resource allocation granularity is adjusted, the overhead of the downlink control information is reduced, and the data transmission time is shortened, thereby improving the working efficiency of the system.

Embodiment 2:

As shown in FIG. 5, it is a schematic flowchart of a resource allocation method according to Embodiment 2 of the present invention. The method can be as follows.

Step 201: The user equipment acquires downlink control information (English: Downlink Control Information; abbreviation: DCI) sent by the base station device.

The DCI includes a virtual resource block number corresponding to a PRB number selected to carry data to be sent to the user equipment.

Step 202: The user equipment determines a current second time transmission interval (second ΤΉ) of the system. The second time transmission interval ΤΤΙ is the first TTI of the Ν, and Ν is a positive integer greater than 1.

The first time may be a time transmission interval specified by the protocol, or may be a time transmission interval determined by other means, for example: The first time is 1 ms. Step 203: The user equipment determines a mapping relationship between the physical resource block PRB for carrying data and the virtual resource block number when the current second time transmission interval TTI of the system is the first TTI of N minutes.

The mapping relationship includes a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one slot, or a number of the first virtual resource block pair and a time slot carrying The mapping relationship between the two physical resource block PRB numbers of the data.

It should be noted that the mapping relationship between the virtual resource block number and the physical resource block PRB number of the bearer data may be determined by the base station device and sent to the terminal device, or may be separately stored by the base station device through negotiation with the terminal device. The user equipment and the base station equipment are not limited herein.

It should be noted that the mapping between the virtual resource block number and the physical resource block PRB number that carries the data may be obtained by the method in the first embodiment of the present invention, and is not specifically described herein. The user equipment adjusts the determined number of PRBs corresponding to the PRB number by using the set scale factor.

Specifically, the determining, by using the set scale factor, the number of PRBs corresponding to the determined PRB number, including:

The number of PRBs adjusted by the following methods is:

N _PRB *a, l]

;

N _PRB is the number of adjusted PRBs, _ΡΗΒ is the number of PRBs corresponding to the determined PRB number, and a is a scale factor, which is generally 0.5.

The user equipment obtains a mapping relationship between the virtual resource block number and the physical resource block PRB number of the bearer data when the TTI is 0.5 ms. In this case, when the downlink control information sent by the base station device is received, the data is allocated for the data. The virtual resource block number is used to determine the corresponding PRB number information. After obtaining the PRB number information, the user equipment searches for the TBS table according to the PRB and MCS information. However, since the number of PRBs in the transmission channel of the embodiment of the present invention is greater than the current use The PRB of one subframe is less resource (for example, less than half); therefore, the UE needs to scale down the number of acquired PRBs to ensure the same code rate as the existing system.

However, considering that the even-numbered slot contains the downlink control channel PDCCH, it occupies 1 to 4 OFDM symbols, and the odd-numbered slot has no such overhead. Therefore, in the embodiment of the present invention, different scale factors can also be set to obtain even numbers respectively. 1 8 numbers ^^ = ₁ ^4 ₅ 〉>< ^ , 1} , odd number of PRBs: N _PRB

l}.

For example: In a system with a system bandwidth of 20 MHz, the subband size is 8 and normal subframes are used. The number of REs available in a normal sub-frame is (l ⁴ _ ³ )* l ² - ⁴ * ³ = l ² 0Res.

The number of REs available for even time slots is (7-3)* 12-4=44REs; the number of REs available for odd time slots is 7* 12-8=76REs. The resource ratio of even time slots is 44/120 = 0.367, and the resource ratio of odd time slots is 76/120 = 0.634.

It is also necessary to consider the maximum subband multiplied by the scale factor as an integer to schedule an integer number of PRBs, so the scale factor of the even time slot is SF=3/8=0.375; the scale factor of the odd time slot is SF=3/8=0.625.

Step 204: The user equipment determines, according to the mapping relationship, a PRB number corresponding to the virtual resource block number included in the DCI, and acquires data sent by the base station device on the physical resource corresponding to the determined PRB number.

In the method of the second embodiment of the present invention, when the current second TTI of the system is the first TTI of N minutes, the physical resource allocation granularity is adjusted, the overhead of the downlink control information is reduced, and the data transmission time is shortened, and the system is improved. effectiveness.

Embodiment 3:

FIG. 6 is a schematic structural diagram of a resource allocation device according to Embodiment 3 of the present invention. The resource allocation device is provided with the functions of the first embodiment of the present invention. The resource allocation device includes: a time determining module 61, a mapping relationship determining module 62, and a sending module 63, where:

a time determining module 61, configured to determine a first transmission time interval ΤΉ;

The mapping relationship determining module 62 is configured to determine, when the current second TTI of the system is the first TTI of N, the mapping relationship between the physical resource block PRB and the virtual resource block used to carry the data, where The mapping relationship includes a mapping relationship between a first virtual resource block number and two PRB numbers carrying data in one slot, or a number of the first virtual resource block pair and two PRBs carrying data in one slot. The mapping relationship between numbers, N is a positive integer greater than one;

The sending module 63 is configured to use the mapping relationship determined by the mapping relationship determining module 62, select a physical resource block corresponding to the PRB number to carry data to be sent to the user equipment, and send downlink control information DCI to the user equipment, The DCI includes a first virtual resource block number corresponding to a PRB number selected for carrying data to be sent to the user equipment.

Specifically, the mapping relationship determining module 62 is specifically configured to establish a mapping relationship between the first virtual resource block number and the two PRB numbers of the bearer data in one time slot by:

The mapping relationship determining module 62 is specifically configured to obtain, by using the following manner, the number of the first virtual resource block numbers included in the interleaving unit:

d Nf (N _null / IT N / 2

Wherein, the number of the first virtual resource block number included in the interleaving unit is ; Ν _Ί is the size value of the interleaving unit, N is the number of columns of the interleaving unit, N _ff is the number of rows of the interleaving unit, and p , P is the number of resource blocks set; H Nf ^ , ^^ is the second virtual The total number of resource block numbers.

The mapping relationship determining module 62 is configured to sequentially read out the first virtual resource block number from the interleaving unit in a column-by-column order, and determine that the read first virtual resource block number has not reached the second virtual resource block. When half of the total number of numbers is used, a mapping relationship between the read first virtual resource block number and two PRB numbers of data carried in one slot is established;

The mapping relationship determining module 62 is specifically configured to establish a mapping relationship between the first virtual resource block number and the two physical resource block PRB numbers of the bearer data in one time slot in the following manner: a sequence of virtual resource block numbers, establishing a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers, and establishing establishing the first virtual resource block odd number and the two second virtual resource block numbers a mapping relationship between the two virtual resource block numbers being two consecutive even numbers if the first virtual resource block number is an even number; if the first virtual resource block number is an odd number, then The two second virtual resource block numbers are two consecutive odd numbers;

The mapping relationship determining module 62 is specifically configured to establish a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers in an order of the first virtual resource block number in the following manner, and establish and establish A mapping relationship between the first virtual resource block odd number and the two second virtual resource block numbers, including: 5

The first virtual resource block number is a second virtual resource block number. The mapping relationship determining module 62 is specifically configured to establish a mapping relationship between the first virtual resource block number and the two physical resource block PRB numbers of the bearer data in one time slot by: determining the first virtual resource block number and Corresponding relationship between two second virtual resource block numbers in a time slot, where the two second virtual resource block numbers are the second virtual resource block numbers corresponding to the same PRB number in the two time slots;

The mapping relationship determining module 62 is further configured to determine a mapping relationship between a resource element group and a PRB for carrying control signaling, where the mapping relationship includes a resource element group number and a time slot bearer control. The mapping relationship between two PRB numbers of signaling;

The sending module 63 is configured to use the obtained mapping relationship to select a physical resource bearer corresponding to the resource element group number to send downlink control information DCI.

The mapping relationship determining module 62 is specifically configured to establish a mapping relationship between a resource element group number and two PRB numbers of bearer control signaling in one slot in the following manner:

It should be noted that the first TTI is lms, and the second TTI is one-half ms. The resource allocation device involved in the third embodiment of the present invention may be a logical component integrated on the base station device, or may be a network element independent of the base station device, and may be implemented by using a hardware manner or by using a software. The implementation of the distribution device is not limited herein.

Embodiment 4:

FIG. 7 is a schematic structural diagram of a resource allocation device according to Embodiment 4 of the present invention. The resource allocation device has the functions described in Embodiment 2 of the present invention. The resource allocation device includes: an obtaining module 71, a determining module 72, and a receiving module 73, wherein:

The obtaining module 71 is configured to acquire downlink control information DCI sent by the base station device, where The DCI includes a virtual resource block number corresponding to a PRB number selected for carrying data to be sent to the user equipment;

a determining module 72, configured to determine a mapping relationship between a physical resource block PRB for carrying data and a virtual resource block number when the current second time transmission interval TTI of the system is the first of N minutes, where The mapping relationship includes a mapping relationship between the first virtual resource block number and two physical resource block PRB numbers carrying data in one slot, or two numbers of the first virtual resource block pair and two data carriers in one slot. a mapping relationship between physical resource block PRB numbers, where N is a positive integer greater than 1; determining a PRB number corresponding to the virtual resource block number included in the DCI according to the mapping relationship;

The receiving module 73 is configured to acquire data sent by the base station device on the determined physical resource corresponding to the PRB number.

Optionally, the resource allocation device further includes: an adjustment module 74, where: after the numbering, adjusting the determined number of PRBs corresponding to the PRB number by using a set scale factor, where the adjusted PRB belongs to one time PRB within the gap.

The adjustment module 74 is specifically configured to obtain the adjusted number of PRBs by:

N _PRB *a, l]

;

It should be noted that the first ΤΤΙ is lms, and the second TTI is one-half ms. The resource allocation device in the fourth embodiment of the present invention may be a logical component integrated on the user equipment, or may be a network element independent of the user equipment, and may be implemented by using a hardware manner or by using a software. The implementation of the distribution device is not limited herein.

Embodiment 5:

FIG. 8 is a schematic structural diagram of a resource allocation device according to Embodiment 5 of the present invention, where the resource allocation device is configured to perform the functions of Embodiment 1 of the present invention, and the resource allocation device may Using a general purpose computer system architecture, the computer system can be a processor-based computer. The resource allocation device entity includes a signal transmitter 81 and at least one processor 82, and a signal transmitter 81, and at least one processor 82 are connected by a bus 83.

The processor 82 can be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention. .

The processor 82 is configured to determine a first transmission time interval TTI. When the current second TTI of the system is the first TTI of N, the mapping relationship between the physical resource block PRB for carrying data and the virtual resource block is determined. The mapping relationship includes a mapping relationship between the first virtual resource block number and two PRB numbers of the bearer data in one slot, or the number of the first virtual resource block pair and the data carried in one slot. a mapping relationship between the PRB numbers, where N is a positive integer greater than one; using the mapping relationship, the physical resource block corresponding to the PRB number is selected to carry data to be sent to the user equipment;

The signal transmitter 81 is configured to send the downlink control information DCI to the user equipment, where the DCI includes a first virtual resource block number corresponding to a PRB number selected to carry data to be sent to the user equipment.

Specifically, the processor 82 is specifically configured to establish, by using the following manner, a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one time slot:

Reading the first virtual resource block number sequentially from the interleaving unit in a column-by-column order, according to reading In the order of the order, the mapping relationship between the read first virtual resource block number and the two PRB numbers of the bearer data in one slot is sequentially established.

The processor 82 is specifically configured to obtain, by using the following manner, the number of the first virtual resource block numbers included in the interleaving unit:

d Nf (N _null / IT N / 2

The total number of resource block numbers.

The processor 82 is specifically configured to sequentially read out the first virtual resource block number from the interleaving unit in a column-by-column order, and determine that the read first virtual resource block number has not reached the second virtual resource block number. At half of the total number, a mapping relationship between the read first virtual resource block number and two PRB numbers carrying data in one slot is established;

The processor 82 is specifically configured to establish a mapping relationship between the first virtual resource block number and the two physical resource block PRB numbers of the bearer data in one time slot by:

Between the second virtual resource block number and the two PRB numbers carrying data in one time slot The mapping relationship is obtained by obtaining a mapping relationship between the first virtual resource block number corresponding to the second virtual resource block number and the two PRB numbers of the bearer data in one slot.

The processor 82 is configured to establish a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers in an order of the first virtual resource block number, and establish a first The mapping relationship between the virtual resource block odd number and the two second virtual resource block numbers includes:

If /3⁄4 is even, it is even

N

If it is an odd number, it is an odd number ^5, where is the first virtual resource block number, which is the second virtual resource block number.

The processor 82 is further configured to determine a mapping relationship between a resource element group and a PRB for carrying control signaling, where the mapping relationship includes a resource element group number and a time slot bearer control signaling. The mapping relationship between the two PRB numbers;

The signal transmitter 81 is specifically configured to use the obtained mapping relationship to select a physical resource bearer corresponding to the resource element group number to send downlink control information.

The processor 82 is specifically configured to establish a mapping relationship between a resource element group number and two PRB numbers of bearer control signaling in one slot in the following manner:

Establish a mapping relationship between the resource element group number and the selected two PRB numbers. It should be noted that the first TTI is lms, and the second TTI is one-half ms. When the current TTI of the system is the first TTI of N, the resource allocation device adjusts the granularity of physical resource allocation, reduces the overhead of downlink control information, shortens the data transmission time, and improves the working efficiency of the system.

Example 6:

FIG. 9 is a schematic structural diagram of a resource allocation device according to Embodiment 6 of the present invention. The resource allocation device has the function of performing the second embodiment of the present invention, and the resource allocation device can adopt a general computer system structure, and the computer system can be specifically a processor-based computer. The resource allocation device entity includes a signal receiver 91 and at least one processor 92, and a signal receiver 91, and at least one processor 92 are connected by a bus 93.

The processor 92 may be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention. .

The processor 92 is configured to acquire downlink control information (DCI) sent by the base station device, where the DCI includes a virtual resource block number corresponding to a PRB number selected for data to be sent to the user equipment; When the time transmission interval TTI is the first TTI of N, the mapping relationship between the physical resource block PRB for carrying data and the virtual resource block number is determined, where the mapping relationship includes the first virtual resource block number and one a mapping relationship between two physical resource block PRB numbers carrying data in a time slot, or a mapping relationship between a number of a first virtual resource block pair and two physical resource block PRB numbers carrying data in one slot, N a positive integer greater than 1; determining, according to the mapping relationship, a PRB number corresponding to the virtual resource block number included in the DCI;

The signal receiver 91 is configured to acquire data sent by the base station device on the determined physical resource corresponding to the PRB number. After the PRB number corresponding to the number, the determined number of PRBs corresponding to the PRB number is adjusted by using the set scale factor, wherein the adjusted PRB belongs to the PRB in one slot. The processor 92 is specifically configured to obtain the adjusted number of PRBs by:

N _PRB *a, l]

Where N _PRB is the number of adjusted PRBs, _ΡΗΒ is the number of PRBs corresponding to the determined PRB number, and α is a scale factor.

When the current second extraction value of the system is the first time, the resource allocation device adjusts the granularity of physical resource allocation, reduces the overhead of downlink control information, shortens the data transmission time, and improves the working efficiency of the system.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. Instructions are provided for implementation in the flowchart The steps of a process or a plurality of processes and/or block diagrams of a function specified in a block or blocks. Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

Rights request

A resource allocation device, comprising:

2. The resource allocation device according to claim 1, wherein

The mapping relationship determining module is specifically configured to establish a mapping relationship between the first virtual resource block number and the two PRB numbers of the bearer data in one time slot by:

3. The resource allocation device of claim 2, wherein

The mapping relationship determining module is specifically configured to obtain, by using the following manner, the number of first virtual resource block numbers included in the interleaving unit:

d Nf (N _null / IT N / 2

The total number of resource block numbers.

4. The resource allocation device according to claim 2 or 3, characterized in that

The mapping relationship determining module is configured to sequentially read out the first virtual resource block number from the interleaving unit in a column-by-column order, and determine that the read first virtual resource block number has not reached the second virtual resource block number. When half of the total number is established, a mapping relationship between the read first virtual resource block number and two PRB numbers carrying data in one slot is established;

5. The resource allocation device according to claim 1, wherein

The mapping relationship determining module is specifically configured to establish a mapping relationship between a first virtual resource block number and two physical resource block PRB numbers carrying data in one time slot by:

Establishing a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers in an order of the first virtual resource block number, and establishing an odd number of the first virtual resource block and a mapping relationship between two second virtual resource block numbers, where the two second virtual resource block numbers are two consecutive even numbers if the first virtual resource block number is an even number; When the resource block number is an odd number, then the two second virtual resource block numbers are two consecutive odd numbers; Obtaining a first virtual resource block number corresponding to the second virtual resource block number and carrying data in a time slot according to a mapping relationship between the second virtual resource block number and the two PRB numbers of the bearer data in one time slot The mapping relationship between two PRB numbers.

6. The resource allocation device of claim 5, wherein

The mapping relationship determining module is specifically configured to establish, according to an order of the first virtual resource block number, a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers, and establish the first A mapping relationship between an odd number of a virtual resource block and two second virtual resource block numbers, including: 5

7. The resource allocation device of claim 1 wherein:

The resource allocation device according to any one of claims 1 to 7, wherein the mapping relationship determining module is further configured to determine a mapping relationship between a resource element group for carrying control signaling and a PRB, The mapping relationship includes a mapping relationship between a resource element group number and two PRB numbers of bearer control signaling in one slot.

The sending module is specifically configured to use the obtained mapping relationship to select a physical resource bearer corresponding to the resource element group number to send downlink control information.

9. The resource allocation device according to claim 8, wherein: The mapping relationship determining module is specifically configured to establish a mapping relationship between a resource element group number and two PRB numbers of bearer control signaling in one slot in the following manner:

The resource allocation device according to any one of claims 1 to 9, wherein the first TTI is lms and the second TTI is one-half ms.

11. A resource allocation device, comprising:

An acquiring module, configured to obtain a downlink control information DCI sent by the base station device, where the DCI includes a virtual resource block number corresponding to a PRB number selected for carrying data to be sent to the user equipment;

a determining module, configured to determine a mapping relationship between a physical resource block PRB for carrying data and a virtual resource block number when a current second time transmission interval TTI of the system is a first TTI of N minutes, where the mapping The relationship includes a mapping relationship between the first virtual resource block number and two physical resource block PRB numbers carrying data in one slot, or a number of the first virtual resource block pair and two physicals carrying data in one slot a mapping relationship between the resource block PRB numbers, where N is a positive integer greater than 1; determining, according to the mapping relationship, a PRB number corresponding to the virtual resource block number included in the DCI;

The resource allocation device according to claim 11, wherein the resource allocation device further comprises: an adjustment module, wherein:

13. The resource allocation device of claim 12, wherein

The adjustment module is specifically configured to obtain the adjusted number of PRBs by: N _PRB = max{[N ^/ _PRB J*a,l};

14. A resource allocation device, comprising:

And a signal transmitter, configured to send downlink control information DCI to the user equipment, where the DCI includes a first virtual resource block number corresponding to a PRB number selected for carrying data to be sent to the user equipment.

15. The resource allocation device of claim 14, wherein

The processor is specifically configured to establish a mapping relationship between the first virtual resource block number and the two physical resource block PRB numbers of the bearer data in one time slot by:

16. The resource allocation device of claim 15, wherein

The processor is specifically configured to obtain, by using the following manner, the number of first virtual resource block numbers included in the interleaving unit:

d Nf (N _null / IT N / 2

The total number of resource block numbers.

17. A resource allocation device according to claim 14 or 15, wherein

The processor is specifically configured to sequentially read out the first virtual resource block number from the interleaving unit in a column-by-column order, and determine that the read first virtual resource block number has not reached the total of the second virtual resource block number. When half of the number is established, a mapping relationship between the read first virtual resource block number and two PRB numbers carrying data in one slot is established;

18. The resource allocation device of claim 14, wherein:

19. The resource allocation device of claim 18, wherein

The processor is specifically configured to establish, according to an order of the first virtual resource block number, a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers, and establish a first virtual The mapping relationship between the resource block odd number and the two second virtual resource block numbers, including: 5

20. The resource allocation device of claim 14, wherein

The resource allocation device according to any one of claims 14 to 20, wherein the processor is further configured to determine a mapping relationship between a resource element group and a PRB for carrying control signaling, where The mapping relationship includes a mapping relationship between a resource element group number and two PRB numbers of bearer control signaling in one slot;

The signal transmitter is specifically configured to use the obtained mapping relationship to select a resource element group The physical resource bearer corresponding to the number sends the downlink control information DCI.

22. The resource allocation device of claim 21, wherein

The processor is specifically configured to establish a mapping relationship between a resource element group number and two PRB numbers of bearer control signaling in one slot in the following manner:

The resource allocation device according to any one of claims 14 to 22, wherein the first TTI is 1 ms and the second TTI is one-half ms.

24. A resource allocation device, comprising:

a processor, configured to acquire downlink control information (DCI) sent by the base station device, where the DCI includes a virtual resource block number corresponding to a PRB number selected for carrying data to be sent to the user equipment; When the transmission interval TTI is the first TTI of N, the mapping relationship between the physical resource block PRB for carrying data and the virtual resource block number is determined, where the mapping relationship includes the first virtual resource block number and one time a mapping relationship between two physical resource block PRB numbers carrying data in the slot, or a mapping relationship between the number of the first virtual resource block pair and the two physical resource block PRB numbers carrying data in one slot, where N is a positive integer greater than 1; determining, according to the mapping relationship, a PRB number corresponding to the virtual resource block number included in the DCI;

25. The resource allocation device of claim 24, wherein

The processor is further configured to: after determining the PRB number corresponding to the virtual resource block number included in the DCI, adjust the determined number of PRBs corresponding to the PRB number by using a set scale factor, where The PRB belongs to a PRB within a time slot.

26. The resource allocation device of claim 25, wherein

The processor is specifically configured to obtain the adjusted number of PRBs by: N _PRB = max{[N ^/ _PRB J*a,l};

27. A resource allocation method, comprising:

Determining the first transmission time interval ΤΉ;

The method according to claim 27, wherein the mapping relationship between the first virtual resource block number and the two physical resource block PRB numbers carrying data in one slot is established in the following manner:

The method according to claim 28, wherein the number of first virtual resource block numbers included in the interleaving unit is obtained by:

d Nf (N _null / IT N / 2

The total number of resource block numbers.

The method according to claim 28 or 29, wherein, when the EVRB number is sequentially read out in the column-by-column order from the interleaving unit, each first virtual resource block number and one time slot are established. The mapping relationship between the two PRB numbers of the bearer data, including:

Establishing a mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers in an order of the first virtual resource block number, and establishing an odd number of the first virtual resource block and a mapping relationship between two second virtual resource block numbers, wherein When the virtual resource block number is an even number, then the two second virtual resource block numbers are two consecutive even numbers; if the first virtual resource block number is an odd number, then the two second virtual resource block numbers are Two consecutive odd numbers;

The method according to claim 31, wherein the mapping relationship between the first virtual resource block even number and the two second virtual resource block numbers is established in the order of the first virtual resource block number in the following manner And establishing a mapping relationship between the first virtual resource block odd number and the two second virtual resource block numbers, including: 5

33. The method according to claim 27, wherein the mapping relationship between the first virtual resource block number and the two physical resource block PRB numbers carrying data in one slot is established in the following manner:

The method of any one of claims 27 to 33, wherein the sending the downlink control information DCI to the user equipment comprises:

Determining a mapping relationship between a resource element group and a PRB for carrying control signaling, where the mapping relationship includes mapping between a resource element group number and two PRB numbers of bearer control signaling in one slot relationship; And using the obtained mapping relationship, selecting a physical resource bearer corresponding to the resource element group number to send downlink control information DCI.

35. The method according to claim 34, wherein the mapping relationship between the resource element group number and the two PRB numbers of bearer control signaling in one slot is established in the following manner:

The method according to any one of claims 27 to 35, wherein the first ΤΉ is lms and the second TTI is one-half ms.

37. A resource allocation method, comprising:

Acquiring the downlink control information DCI sent by the base station device, where the DCI includes a virtual resource block number corresponding to a PRB number selected to carry data to be sent to the user equipment;

Determining, according to the mapping relationship, a PRB number corresponding to the virtual resource block number included in the DCI;

The method of claim 37, after the determining the PRB number corresponding to the virtual resource block number included in the DCI, the method further includes:

The method according to claim 38, wherein the determining the number of PRBs corresponding to the determined PRB number by using the set scale factor comprises: The number of adjusted PRBs obtained by:

N _PRB =max{[N' _PRfl J*a,l}; where N _PRB is the number of adjusted PRBs, and _ΡΗΒ is the determined number of PRBs corresponding to the PRB number, and is a scale factor.