WO2019192592A1 - Method executed by user equipment, and user equipment - Google Patents

Abstract

Provided are a method executed by a user equipment, and a user equipment, wherein same can improve resource allocation efficiency. The method executed by a user equipment comprises: receiving downlink control information (DCI), wherein the downlink control information (DCI) contains resource block allocation information; determining, by means of the resource block allocation information, a starting resource block RB _start and the length L _CRBs of a set of continuously allocated resource blocks that start from the starting resource block; and receiving a physical downlink shared channel (PDSCH) on a resource block determined from the starting resource block RB _start and the length L _CRBs of the resource block, wherein the resource block allocation information contains a resource indication value (RIV) corresponding to an intermediate variable RB' _start and the length L _CRBs of the resource block, and the intermediate variable RB' _start corresponds to the starting resource block RB _start.

Description

Method performed by user equipment and user equipment Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method performed by a user equipment, a method performed by a base station, and a corresponding user equipment and a base station.

Background technique

In March 2017, at the rd#75 plenary session of the 3rd Generation Partnership Project (3GPP), a new work item on Machine Type Communication (MTC) was further enhanced (see Non- Patent Document: RP-170732: New WID on Even further enhanced MTC for LTE (efeMTC) is approved. In December 2017, the RAN#77 plenary session decided to update the efeMTC work item, including the physical downlink shared channel (PDSCH) and the physical uplink shared channel (connected mode). The resource allocation of :PUSCH) supports a more flexible starting physical resource block (starting PRB).

In the existing 3GPP LTE standard specification, for a non-MTC UE (also referred to as a non-BL/CE UE), a resource allocation manner of a physical downlink shared channel (PDSCH) is a downlink resource allocation type. (DL resource allocation type 0), that is, resource block allocation information (generally indicated by a resource block assignment field in the downlink control information DCI) includes a bitmap in which each bit indicates a specific resource block group ( Whether the Resource Block Group: RBG is allocated to the scheduled User Equipment (UE). Wherein, an RBG includes a set of consecutive localized type virtual resource blocks (VRBs), and the local type of virtual resource blocks are directly mapped to physical resource blocks (PRBs). For example, virtual resource block 0 is directly mapped to physical resource block 0, virtual resource block 1 is directly mapped to physical resource block 1, and so on. The RBG size under different downlink system bandwidths is shown in Table 1;

And the unit of RBG size P is PRB; the number of PRB in the system

Table 1: RBG size under different downlink system bandwidths

The bitmap contains a total

Bits, each bit corresponding to 1 RBG. The following line system bandwidth is 25 resource blocks (RBs). The RBG size is P=2 and the total number of RBGs.

The size of each RBG in the first 12 RBGs is 2 RBs, and the size of the last RBG is 1 RB, as shown in Figure 1.

The RBG numbered n _RBG , the number of the starting PRB occupied by it is:

n _RBG ·P (1)

among them

Assuming that the value of each bit of the bitmap is 101 111 010 001 0 in sequence, the allocated RBGs are RBG0, RBG2, RBG3, RBG4, RBG5, RBG7, RBG11.

In the existing 3GPP standard specification for MTC, an MTC UE (also referred to as a BL/CE UE) in an RRC connected state supports two coverage enhancement modes: coverage enhancement mode A (CE mode A) and coverage enhancement mode B ( CE mode B). Coverage enhanced mode A is used for good channel state, does not require coverage enhancement or requires less coverage enhancement, or does not require repeated transmission or repeated transmission of small UEs; coverage enhancement mode B is used for poor channel state, need to be compared Large or large coverage enhancements, or UEs that require repeated or large transmissions.

According to different MTC UE capabilities, some UEs only support a 1.4 MHz PDSCH bandwidth, some UEs support a 5 MHz PDSCH bandwidth, and some UEs support a 20 MHz PDSCH bandwidth. A UE supporting a PDSCH bandwidth of 5 MHz may also configure a maximum PDSCH bandwidth of 1.4 MHz, and a UE supporting a PDSCH bandwidth of 20 MHz may also configure a maximum PDSCH bandwidth of 5 MHz or 1.4 MHz. The following describes the solution of the present invention only in the case where the maximum PDSCH bandwidth is configured to be 1.4 MHz, but the solution of the present invention is also partially or fully applicable to other maximum PDSCH bandwidth configurations.

The MTC UE typically uses frequency resources in the system in units of one or more narrowbands (NBs). An NB contains 6 consecutive non-overlapping physical resource blocks. For a downlink system bandwidth

Total existence

Downstream NB, whose number is

For an NB numbered n _NB , the number of the six physical resource blocks occupied by it can be expressed as

Where i=0,1,...,5,

Mod is the remainder operator.

The following line system bandwidth is 25 resource blocks as an example. The correspondence between PRB, RBG and NB is shown in Figure 2.

For the MTC UE in the coverage enhancement mode A, the PDSCH resource allocation steps are as follows:

1. In the resource block allocation information, use

Each bit carries an NB number n _NB ;

2. In the resource block allocation information, the resource indication value (RIV) is carried by the other five bits, and the resource in the indicated NB is configured by using the DL resource allocation type 2 (DL resource allocation type 2). Assignment, always assume

Regardless of the actual system bandwidth.

In the downlink resource allocation type 2, the value of each RIV corresponds to one start resource block (RB _start ) and the length of a set of consecutively allocated virtual resource blocks (L _CRBs ). In the MTC UE is allocated to a PDSCH when the resource coverage enhancement mode A, RB _start reference PRB, i.e. RB _start = 0 corresponding to the PRB, the first of PRBs (i.e. expression (2 indicated in the NB) The PRB corresponding to i=0. The number is generally written as 0 in the NB, so it can also be said to be the 0th PRB in the NB. In the present invention, a similar term is also used for the first PRB in the RBG. That is, it is numbered 0 in the RBG, and sometimes referred to as the 0th PRB in the RBG.

The correspondence between RIV and RB _start and L _CRBs is as follows:

The following line system bandwidth is 25 resource blocks as an example. If the indicated NB number is 2 (ie, NB index=2) and the indicated RIV value is 14, the UE may derive RB _start according to the indicated RIV value. = 2 and L _CRBs = 3, as shown in FIG. 3, the resources allocated to the UE are PRB15, PRB16, and PRB17.

The PDSCH allocated by the MTC UE can also be configured to perform frequency hopping. The following parameters related to frequency hopping are configured by the base station through RRC signaling:

mpdcch-pdsch-HoppingConfig: The RRC layer indicates whether frequency hopping is activated.

mpdcch-pdsch-HoppingNB-r13: Indicates the number of NBs used for frequency hopping.

· interval-DLHoppingConfigCommonModeX: Indicates how many subframes of the UE in CE mode X (X is A or B) stay on the same NB.

mpdcch-pdsch-HoppingOffset: Indicates the offset (in NB) between two consecutive NBs experienced by frequency hopping.

For the MTC UE in CE mode A, the frequency hopping of the PDSCH is also controlled by the frequency hopping flag included in the DCI, that is, only when the RRC parameter mpdcch-pdsch-HoppingConfig indicates that the frequency hopping is activated and the frequency hopping flag in the DCI is also indicated. When hopping, the PDSCH performs frequency hopping.

The efficiency of resource allocation may be relatively low when non-MTC UEs and MTC UEs are present in the system. Taking FIG. 2 as an example, NB2 covers all of RBG7 and RBG8, and a part of RBG6 and RBG9. If an MTC UE is allocated all 6 PRBs of NB2, then RBG6, RBG7, RBG8, and RBG9 cannot be used for non-MTC UEs (if downlink resource allocation type 0 is used), although RBG6 includes PRB12 and RBG9. The included PRB19 is idle.

In addition, the above only mentions the problem of PDSCH resource allocation. A similar problem occurs on the physical uplink shared channel (PUSCH). In addition to the similar characteristics of the PDSCH, the PUSCH resource allocation has other features: physical random access (physical random access). The channel, PRACH, and the physical uplink control channel (PUCCH) are generally located on both sides of the bandwidth of the LTE system, and the bandwidth occupied by the PUCCH is configurable, so the NB located on or near the bandwidth of the LTE system may be Fragments appear.

Therefore, a new resource allocation mechanism needs to be introduced to better improve the resource allocation efficiency when different types of UEs are multiplexed together.

Summary of the invention

In order to solve at least some of the above problems, the present invention provides a method performed by a user equipment and a user equipment, which can greatly improve the efficiency of resource allocation.

According to an aspect of the present invention, a method performed by a user equipment is provided, comprising: receiving downlink control information DCI, the downlink control information DCI including resource block allocation information; determining, by the resource block allocation information, a starting resource a block RB _start and a length L _CRBs of a set of consecutively allocated resource blocks starting from the start resource block; and receiving on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block a physical downlink shared channel PDSCH, where the resource block allocation information includes a resource indication value RIV corresponding to an intermediate variable RB' _start and a length L _{CRBs of} the resource block, the intermediate variable RB' _start and the initial resource block RB _start corresponds. In this and all embodiments of the present invention, the length L _CRBs of the resource block refers to the number of resource blocks to be allocated.

In one embodiment, can be a resource indication value RIV and said intermediate variable RB _'start length L _CRBs and the correspondence between the resource block RB by the resource indication value RIV with the intermediate variables' _start and The mapping relationship between the lengths L _{CRBs of} the resource blocks is represented.

In one embodiment, the intermediate may be variable RB 'corresponding relationship between the _start and the RB _start of starting resource block RB by the intermediate variable "mapping relationship between the _start and the starting resource block RB _start to Said.

In an embodiment, the mapping relationship may also be one of a linear mapping, a table mapping, and a piecewise linear mapping.

In an embodiment, the value range of the starting resource block RB _{start is} a union of two sets of RB _start value set 1 and RB _start value set 2 defined below.

RB _start value set 1:

among them,

For the number of downstream narrowband NBs in the system,

For the downlink system bandwidth (in physical resource block units), RB _start takes the value set 2:

{y|y=n _RBG ·P}

among them,

P is the size of the resource block group RBG,

It is the number of RGB of the downlink resource block group in the system.

In an embodiment, the value range of the starting resource block RB _start is also a subset of the union of the two sets of the RB _start value set 1 and the RB _start value set 2 .

In an embodiment, the length L _CRBs of the resource block may also be in a range of:

among them,

The number of virtual resource blocks.

According to another aspect of the present invention, a method performed by a user equipment is provided, comprising: receiving downlink control information DCI, the downlink control information DCI including resource block allocation information; determining the start by using the resource block allocation information a resource block RB _start and a length L _CRBs of a group of consecutively allocated resource blocks starting from the start resource block; determining, by the resource block allocation information, a narrowband NB number n _NB and determining by the narrowband NB number n _NB The reference physical resource block PRB of the initial resource block RB _start is the number RB _ref of the PRB corresponding to the RB _start =0; the number of the PRB corresponding to the initial resource block RB _start is determined by the number RB _ref And receiving the physical downlink shared channel PDSCH on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block.

According to another aspect of the present invention, there is provided a method performed by a user equipment, comprising: receiving downlink control information DCI, the downlink control information DCI including resource block allocation information; determining, by the resource block allocation information, a narrowband NB No. n _NB , and the reference physical resource block PRB of the initial resource block RB _start , that is, the number RB _ref of the PRB corresponding to the RB _start =0 and the group starting from the starting resource block are determined by the narrowband NB number n _NB The maximum length of consecutively allocated resource blocks L _CRBs

Through the number RB _ref , the maximum length of the resource block L _CRBs

And the resource block allocation information to determine the starting resource block RB _start and the length L _{CRBs of} the resource block; and determined by the starting resource block RB _start and the length L _CRBs of the resource block The physical downlink shared channel PDSCH is received on the resource block.

According to an aspect of the present invention, a method performed by a user equipment is provided, comprising: receiving downlink control information DCI, the downlink control information DCI including resource block allocation information; determining, by the resource block allocation information, a starting resource a block RB _start and a length L _CRBs of a set of consecutively allocated resource blocks starting from the start resource block; and receiving on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block a physical downlink shared channel PDSCH, where the resource block allocation information includes a resource indication value RIV corresponding to the intermediate variable RIV', the intermediate variable RIV' and the starting resource block RB _start and the length of the resource block L _CRBs correspond.

In an embodiment, the intermediate variable RIV' may also be the resource indication value RIV.

In an embodiment, the correspondence between the intermediate variable RIV' and the starting resource block RB _start and the length L _CRBs of the resource block may also be represented by a linear mapping.

In one embodiment, different downlink system bandwidths are also possible

Different parameters _defining a linear mapping of the intermediate variable RIV' and the starting resource block RB _start and the length L _CRBs of the resource block are _defined .

In an embodiment, the correspondence between the intermediate variable RIV' and the starting resource block RB _start and the length L _CRBs of the resource block may also be represented by a table.

In one embodiment, different downlink system bandwidths are also possible

A table is defined which describes the correspondence between the intermediate variable RIV' and the starting resource block RB _start and the length L _CRBs of the resource block.

According to another aspect of the present invention, a user equipment is provided, comprising: a processor; and a memory having instructions stored thereon; the instructions, when executed by the processor, causing the user equipment to perform The method performed by the user equipment described above.

DRAWINGS

The above and other features of the present invention will become more apparent from the detailed description of the appended claims.

FIG. 1 is a diagram showing a correspondence relationship between PRBs and RBGs when the downlink system bandwidth is 25 resource blocks.

2 is a diagram showing the correspondence relationship between PRB, RBG, and NB when the downlink system bandwidth is 25 resource blocks.

3 is a diagram showing an example of allocating PDSCH resources to an MTC UE in coverage enhancement mode A using downlink resource allocation type 2.

4 is a flow chart showing a method performed by a user equipment UE according to an embodiment of the present invention.

FIG. 5 is a flow chart showing a method performed by a user equipment UE according to another embodiment of the present invention.

FIG. 6 is a flowchart showing a method performed by a user equipment UE according to another embodiment of the present invention.

FIG. 7 is a flowchart showing a method performed by a user equipment UE according to another embodiment of the present invention.

FIG. 8 is a diagram showing a first method of determining RB _ref .

Fig. 9 is a diagram showing a second method of determining RB _ref .

FIG. 10 is a diagram showing a third method of determining RB _ref .

Fig. 11 is a diagram showing a fourth method of determining RB _ref .

FIG. 12 is a block diagram showing a user equipment UE according to an embodiment of the present invention.

detailed description

The invention is described in detail below with reference to the drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, detailed descriptions of well-known techniques that are not directly related to the present invention are omitted for the sake of brevity to prevent confusion of the understanding of the present invention.

The following describes various embodiments in accordance with the present invention with the LTE mobile communication system and its subsequent evolved versions as example application environments. However, it should be noted that the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as 5G and subsequent mobile communication systems and the like.

Some of the terms referred to in the present invention are described below, and the terms referred to in the present invention are defined herein unless otherwise specified. The terminology provided by the present invention may adopt different naming schemes in LTE, LTE-Advanced, LTE-Advanced Pro, 5G, and subsequent communication systems, but in the present invention, unified terminology is adopted, when applied to a specific system, Can be replaced with the terminology used in the corresponding system.

Embodiments of the present invention describe various embodiments in accordance with the present invention with PDSCH resource allocation as an example. However, it should be noted that the embodiment of the present invention is also applicable to PUSCH resource allocation, and only needs to replace parameters related to PDSCH resource allocation with corresponding parameters related to PUSCH resource allocation, such as

Replaced with

The action on PDSCH resource allocation is replaced with a corresponding action on PUSCH resource allocation, such as replacing the receiving PDSCH with the transmitting PUSCH, and so on.

In the description of the embodiments of the present invention, unless explicitly stated (for example, in some places a clear assumption

and / or

Regardless of the actual system bandwidth, otherwise

And P use the definitions in the prior art, and

4 is a flow chart showing a method performed by a user equipment UE according to an embodiment of the present invention.

As shown in FIG. 4, in step S410, downlink control information DCI including resource block allocation information is received.

In step S420, the start resource block RB _start and the length L _CRBs of a group of consecutively allocated resource blocks starting from the start resource block are determined by the resource block allocation information.

In step S430, the physical downlink shared channel PDSCH is received on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block.

The resource block allocation information includes a resource indication value RIV corresponding to the intermediate variable RB' _start and the length L _{CRBs of the} resource block, and the intermediate variable RB' _start corresponds to the starting resource block RB _start .

In the prior art, as shown in FIG. 2, since the narrowband NB width is fixed, the initial resource block is also fixed accordingly, so the resource allocation efficiency is poor. In contrast, in the present embodiment, it is possible to flexibly determine a starting resource block by using the intermediate variable RB _'start,, so the efficiency of resource allocation is improved.

FIG. 5 is a flow chart showing a method performed by a user equipment UE according to another embodiment of the present invention.

As shown in FIG. 5, in step S510, downlink control information DCI including resource block allocation information is received.

In step S520, the start resource block RB _start and the length L _CRBs of a group of consecutively allocated resource blocks starting from the start resource block are determined by the resource block allocation information.

In step S530, the narrowband NB number n _NB is determined by the resource block allocation information, and the reference physical resource block PRB of the initial resource block RB _start , that is, the number of the PRB corresponding to the RB _start =0 is determined by the narrowband NB number n _NB RB _ref .

In step S540, the number of the PRB corresponding to the start resource block RB _start is determined by the number RB _ref .

In step S550, the physical downlink shared channel PDSCH is received on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block.

In the prior art, as shown in FIG. 2, since the number of physical resource blocks of the starting resource block is not necessarily the 0th, some resources cannot be utilized, so the efficiency of resource allocation is poor. In contrast, in this embodiment, by determining the reference physical resource block PRB of the initial resource block RB _start , that is, the number RB _ref of the PRB corresponding to RB _start =0, resources can be effectively utilized, and thus resource allocation efficiency Can be improved.

FIG. 6 is a flowchart showing a method performed by a user equipment UE according to another embodiment of the present invention.

As shown in FIG. 6, in step S610, downlink control information DCI including resource block allocation information is received.

In step S620, the narrowband NB number n _NB is determined by the resource block allocation information, and the reference physical resource block PRB of the initial resource block RB _start , that is, the number of the PRB corresponding to the RB _start =0 is determined by the narrowband NB number n _NB RB _ref and the maximum length of a set of consecutively allocated resource blocks starting from the starting resource block L _CRBs

In step S630, the maximum value of the length L _CRBs of the resource block by the number RB _ref

And resource block allocation information to determine the starting resource block RB _start and the length L _{CRBs of the} resource block.

In step S640, the physical downlink shared channel PDSCH is received on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block.

In the prior art, as shown in FIG. 2, since the number of the physical resource block of the initial resource block is not necessarily the 0th, and the length of the resource block is fixed, some resources cannot be utilized, so the efficiency of resource allocation is Poor. In contrast, in this embodiment, by determining not only the reference physical resource block PRB of the starting resource block RB _start , that is, the number RB _ref of the PRB corresponding to RB _start =0, but also determining a group starting from the starting resource block. The maximum length of consecutively allocated resource blocks L _CRBs

Thereby, resources can be utilized more efficiently, and thus the efficiency of resource allocation is further improved.

FIG. 7 is a flowchart showing a method performed by a user equipment UE according to another embodiment of the present invention.

As shown in FIG. 7, in step 710, downlink control information DCI including resource block allocation information is received.

In step S720, the start resource block RB _start and the length L _CRBs of a group of consecutively allocated resource blocks starting from the start resource block are determined by the resource block allocation information.

In step S730, the physical downlink shared channel PDSCH is received on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block.

The resource block allocation information includes a resource indication value RIV corresponding to the intermediate variable RIV', and the intermediate variable RIV' corresponds to the starting resource block RB _start and the length L _{CRBs of the} resource block.

In the present embodiment, by utilizing the intermediate variable RIV', resources can be utilized more efficiently, and thus the efficiency of resource allocation is further improved.

[Example 1]

In an embodiment of the invention, the steps of PDSCH resource allocation performed by the user equipment UE are as follows:

1. Receiving downlink control information (DCI), which includes resource block allocation information (or resource block allocation indication); and determining, by using resource block allocation information, a starting resource block (RB _start ) and a starting resource block a set length (L _CRBs) virtual resource blocks starting consecutively allocated; wherein, RB _start reference of PRBs, i.e. RB _start = 0 corresponds of PRBs, the system numbered PRB 0, i.e., n _PRB = 0 Suo Corresponding PRB. Or RB _start is the PRB number of the starting resource block in the system. Optionally, the DCI may include the enabling information for indicating whether the PDSCH resource allocation is performed on the user equipment UE according to the method in the embodiment of the present invention; for example, the enabling information may instruct the UE to interpret the resource block according to the prior art. The content of the information is allocated, or the UE is instructed to interpret the content of the resource block allocation information according to the method described in the embodiment of the present invention. Optionally, the foregoing enabling information may be sent by using a radio resource control (RRC) message instead of being sent by using a DCI, or sent by using an RRC message or by using a DCI.

2. Determine RB _start and L _CRBs . This can be done using one of the following methods:

2.1 [Method 1 for determining RB _start and L _CRBs ]

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB′ _start and one L _CRBs , where RB′ _start is an intermediate variable, and the value of each RB′ _start Corresponds to the value of one RB _start .

The correspondence between RIV and RB' _start and L _CRBs can use one of the following methods:

[Method 1 for mapping RB' _start and L _CRBs to RIV]

[Method 2 of mapping RB' _start and L _CRBs to RIV]

RIV=6·RB' start +L CRBs -1

Or use other similar _{methods of} linearly mapping RB' _start and L _CRBs to RIV.

The value of RB' _start can be mapped to the value of RB _start by means of a table. For example, for

For 6, 15, 25, 50, 75, and 100, mapping can be performed by Table 2, Table 3, Table 4, Table 5, Table 6, and Table 7, respectively. Optionally, only a part of the table in Table 2, Table 3, Table 4, Table 5, Table 6, and Table 7 may be defined. For example, the embodiment of the present invention may not be applied.

The system at this time is not defined in Table 2.

Table 2: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5
RB start	0	1	2	3	4	5

Table 3: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8
RB start	0	1	2	4	6	8	10	12	14

Table 4: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8	9	10	11	12
RB start	0	2	4	6	8	10	12	13	14	16	18	19	20
RB' start	13	14
RB start	twenty two	twenty four

Table 5: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8	9	10	11	12
RB start	0	1	3	6	7	9	12	13	15	18	19	twenty one	twenty four
RB' start	13	14	15	16	17	18	19	20	twenty one	twenty two	twenty three	twenty four
RB start	25	27	30	31	33	36	37	39	42	43	45	48

Table 6: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8	9	10	11	12
RB start	0	1	4	7	8	12	13	16	19	20	twenty four	25	28
RB' start	13	14	15	16	17	18	19	20	twenty one	twenty two	twenty three	twenty four	25
RB start	31	32	36	38	40	44	48	50	52	56	60	62	64
RB' start	26	27
RB start	68	72

Table 7: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8	9	10	11	12
RB start	0	2	4	8	12	14	16	20	twenty four	26	28	32	36
RB' start	13	14	15	16	17	18	19	20	twenty one	twenty two	twenty three	twenty four	25
RB start	38	40	44	48	50	52	56	60	62	64	68	72	74
RB' start	26	27	28	29	30	31	32

RB start

76

80

84

86

88

92

96

It should be noted that Table 2, Table 3, Table 4, Table 5, Table 6, and Table 7 are just one way to implement mapping from RB' _start to RB _start . For any of these tables, the sustain RB 'and RB _{start start} set values and the values are the same for each of the RB _start corresponds to a unique RB' premise values _start from RB _'start to RB The mapping of _start can be changed arbitrarily.

Alternatively, the value of RB' _start may also be mapped to the value of RB _start by other piecewise linear mapping. E.g,

for

among them

for

And

Where P is the RBG size.

The definition of the set X can be as shown in Table 8, where {} represents an empty set. Optionally, the definition of the set X may also be part of the table 8. For example, the embodiment of the present invention may not be applied.

System, at this time the definition of set X does not include corresponding to

Line.

Table 8: Definition of Set X

As suggested by the example of mapping RB' _start to RB _start as listed above, the value range of RB _start may be two of "RB _start value set 1" and "RB _start value set 2" defined below. The union of collections:

· RB _start value set 1 (a set of the number of the starting PRBs of all NBs):

among them

· RB _start value set 2 (a set of the number of the starting PRBs of all RBGs):

{y|y=n _RBG ·P}

among them

P is the RBG size.

Alternatively, the range may also RB _start RB _start a subset of the value set value set 1 and set 2 and RB _start. For example, the value range of the RB _start includes only the number of the starting PRB of all NBs in the system, or only the number of the starting PRB of all RBGs in the system, or only the number of the starting PRB of some NBs in the system. Or only the number of the starting PRB of some RBGs in the system, or only the number of the starting PRB of some NBs in the system and the number of the starting PRB of some RBGs in the system, or only the start of all NBs in the system. The number of the PRB and the number of the starting PRB of the partial RBG in the system, or only the number of the starting PRB of the partial NB in the system and the number of the starting PRB of all the RBGs in the system. At this time, the range of values of RB' _start also needs to be changed accordingly.

The range of L _CRBs can be as follows:

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs = 4, or L _CRBs = 6.

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs =1, or L _CRBs = 2.

2.2 [Method 2 for determining RB _start and L _CRBs ]

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB _start and one L _CRBs .

The correspondence between RIV and RB _start and L _CRBs can use one of the following methods:

[Method 1 of mapping RB _start and L _CRBs to RIV]

[Method 2 of mapping RB _start and L _CRBs to RIV]

RIV=6·RB start +L CRBs -1

Or use other similar methods to linearly map RB _start and L _CRBs to RIV.

The value range of RB _start can be the union of the two sets of RB _start value set 1 and RB _start value set 2 defined below:

· RB _start value set 1 (a set of the number of the starting PRBs of all NBs):

among them

· RB _start value set 2 (a set of the number of the starting PRBs of all RBGs):

{y|y=n _RBG ·P}

among them

P is the RBG size.

Alternatively, the range may also RB _start RB _start a subset of the value set value set 1 and set 2 and RB _start. For example, the value range of the RB _start includes only the number of the starting PRB of all NBs in the system, or only the number of the starting PRB of all RBGs in the system, or only the number of the starting PRB of some NBs in the system. Or only the number of the starting PRB of some RBGs in the system, or only the number of the starting PRB of some NBs in the system and the number of the starting PRB of some RBGs in the system, or only the start of all NBs in the system. The number of the PRB and the number of the starting PRB of the partial RBG in the system, or only the number of the starting PRB of the partial NB in the system and the number of the starting PRB of all the RBGs in the system.

The range of L _CRBs can be as follows:

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs = 4, or L _CRBs = 6.

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs =1, or L _CRBs = 2.

2.3 [Method 3 for determining RB _start and L _CRBs ]

Two independent indications are included in the resource block allocation information, which are used to indicate RB _start and L _CRBs , respectively. For example, RB _start and L _CRBs are indicated by two separate fields, respectively, or RB _{start is} indicated by some or some bits of a field, and another bit or bits of the other field indicates L _CRBs .

The value range of RB _start can be the union of the two sets of RB _start value set 1 and RB _start value set 2 defined below:

· RB _start value set 1 (a set of the number of the starting PRBs of all NBs):

among them

· RB _start value set 2 (a set of the number of the starting PRBs of all RBGs):

{y|y=n _RBG ·P}

among them

P is the RBG size.

Alternatively, the range may also RB _start RB _start a subset of the value set value set 1 and set 2 and RB _start. For example, the value range of the RB _start includes only the number of the starting PRB of all NBs in the system, or only the number of the starting PRB of all RBGs in the system, or only the number of the starting PRB of some NBs in the system. Or only the number of the starting PRB of some RBGs in the system, or only the number of the starting PRB of some NBs in the system and the number of the starting PRB of some RBGs in the system, or only the start of all NBs in the system. The number of the PRB and the number of the starting PRB of the partial RBG in the system, or only the number of the starting PRB of the partial NB in the system and the number of the starting PRB of all the RBGs in the system.

The range of L _CRBs can be as follows:

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs = 4, or L _CRBs = 6.

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs =1, or L _CRBs = 2.

3. Receive the PDSCH on the virtual resource block determined by RB _start and L _CRBs .

4. Optionally, in all of the above steps,

Can also be replaced by

The virtual resource block may also be replaced by a physical resource block, and the user equipment UE may be a non-MTC UE or an MTC UE.

[Embodiment 2]

In an embodiment of the invention, the steps of PDSCH resource allocation performed by the user equipment UE are as follows:

1. Receiving downlink control information (DCI), which includes resource block allocation information (or resource block allocation indication); and determining, by using resource block allocation information, a starting resource block (RB _start ) and a starting resource block a set length (L _CRBs) virtual resource blocks starting consecutively allocated; wherein, RB _start reference of PRBs, i.e. RB _start = 0 corresponds of PRBs, the system numbered PRB 0, i.e., n _PRB = 0 Suo Corresponding PRB. Or RB _start is the PRB number of the starting resource block in the system. Optionally, the DCI may include the enabling information for indicating whether the PDSCH resource allocation is performed on the user equipment UE according to the method in the embodiment of the present invention; for example, the enabling information may instruct the UE to interpret the resource block according to the prior art. The content of the information is allocated, or the UE is instructed to interpret the content of the resource block allocation information according to the method described in the embodiment of the present invention. Optionally, the foregoing enabling information may be sent by using a radio resource control (RRC) message instead of being sent by using a DCI, or sent by using an RRC message or by using a DCI.

2. Determine RB _start and L _CRBs . This can be done using one of the following methods:

2.1 [Method 1 for determining RB _start and L _CRBs ]

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB′ _start and one L _CRBs , where RB′ _start is an intermediate variable, and the value of each RB′ _start Corresponds to the value of one RB _start .

The correspondence between RIV and RB' _start and L _CRBs can use one of the following methods:

[Method 1 for mapping RB' _start and L _CRBs to RIV]

[Method 2 of mapping RB' _start and L _CRBs to RIV]

RIV=6·RB' start +L CRBs -1

Or use other similar _{methods of} linearly mapping RB' _start and L _CRBs to RIV.

The value of RB' _start can be mapped to the value of RB _start by means of a table. For example, for

For 6, 6, 25, 50, 75, and 100, mapping can be performed by Table 9, Table 10, Table 11, Table 12, Table 13, and Table 14, respectively. Optionally, only a part of the tables in Table 9, Table 10, Table 11, Table 12, Table 13, and Table 14 may be defined. For example, the embodiment of the present invention may not be applied.

The system at this time is not defined in Table 9.

Table 9: Mapping table from RB' _start to RB _start

RB' start	0
RB start	0

Table 10: Mapping table from RB' _start to RB _start

RB' start	0	1	2
RB start	0	1	8

Table 11: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5
RB start	0	6	12	13	18	19

Table 12: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8	9	10	11	12
RB start	0	1	6	7	12	13	18	19	twenty four	25	30	31	36
RB' start	13	14	15
RB start	37	42	43

Table 13: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8	9	10	11	12
RB start	0	1	4	7	12	13	16	19	twenty four	25	28	31	36
RB' start	13	14	15	16	17	18	19	20
RB start	38	44	48	50	56	60	62	68

Table 14: Mapping table from RB' _start to RB _start

RB' start	0	1	2	3	4	5	6	7	8	9	10	11	12
RB start	0	2	8	12	14	20	twenty four	26	32	36	38	44	48
RB' start	13	14	15	16	17	18	19	20	twenty one	twenty two	twenty three
RB start	50	56	60	62	68	72	74	80	84	86	92

It should be noted that Table 9, Table 10, Table 11, Table 12, Table 13, and Table 14 are just one way to implement mapping from RB' _start to RB _start . For any of these tables, the sustain RB 'and RB _{start start} set values and the values are the same for each of the RB _start corresponds to a unique RB' premise values _start from RB _'start to RB The mapping of _start can be changed arbitrarily.

Alternatively, the value of RB' _start may also be mapped to the value of RB _start by other piecewise linear mapping. E.g,

for

among them

for

And

Where P is the RBG size and the value of RB′′ _start is as follows:

among them

The definition of the set Y can be as shown in Table 15, where {} represents an empty set. Optionally, the definition of the set Y may also be part of the table 15, for example, the embodiment of the present invention may not be applied.

System, at this time the definition of set Y does not include corresponding to

Line.

Table 15: Definition of Set Y

As suggested by the example of mapping RB' _start to RB _start as mentioned above, the value range of RB _start may be "RB _start value set 1" and "RB _start value set 2" defined below. The union of the collections:

· RB _start value set 1 (a set of the number of the starting PRBs of all NBs):

among them

· RB _start value set 2' (a set of the number of the starting PRBs of the RBGs to which all the NB's starting PRBs belong):

Where x ∈ RB _start takes a value of 1, and P is the RBG size.

Alternatively, the RB _start range may be a subset of the set of values 1 and RB _start RB _start value set 2 'and set. At this time, the range of values of RB' _start also needs to be changed accordingly.

The range of L _CRBs can be as follows:

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs = 4, or L _CRBs = 6.

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs =1, or L _CRBs = 2.

2.2 [Method 2 for determining RB _start and L _CRBs ]

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB _start and one L _CRBs .

The correspondence between RIV and RB _start and L _CRBs can use one of the following methods:

[Method 1 of mapping RB _start and L _CRBs to RIV]

[Method 2 of mapping RB _start and L _CRBs to RIV]

RIV=6·RB start +L CRBs -1

Or use other similar methods to linearly map RB _start and L _CRBs to RIV.

The value range of RB _start can be the union of the two sets of "RB _start value set 1" and "RB _start value set 2" defined below:

· RB _start value set 1 (a set of the number of the starting PRBs of all NBs):

among them

· RB _start value set 2' (a set of the number of the starting PRBs of the RBGs to which all the NB's starting PRBs belong):

Where x ∈ RB _start takes a value of 1, and P is the RBG size.

Alternatively, the RB _start range may be a subset of the set of values 1 and RB _start RB _start value set 2 'and set. At this time, the range of values of RB' _start also needs to be changed accordingly.

The range of L _CRBs can be as follows:

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs = 4, or L _CRBs = 6.

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs =1, or L _CRBs = 2.

2.3 [Method 3 for determining RB _start and L _CRBs ]

Two independent indications are included in the resource block allocation information, which are used to indicate RB _start and L _CRBs , respectively. For example, RB _start and L _CRBs are indicated by two separate fields, respectively, or RB _{start is} indicated by some or some bits of a field, and another bit or bits of the other field indicates L _CRBs .

The value range of RB _start can be the union of the two sets of "RB _start value set 1" and "RB _start value set 2" defined below:

· RB _start value set 1 (a set of the number of the starting PRBs of all NBs):

among them

· RB _start value set 2' (a set of the number of the starting PRBs of the RBGs to which all the NB's starting PRBs belong):

Where x ∈ RB _start takes a value of 1, and P is the RBG size.

Alternatively, the RB _start range may be a subset of the set of values 1 and RB _start RB _start value set 2 'and set. At this time, the range of values of RB' _start also needs to be changed accordingly.

The range of L _CRBs can be as follows:

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs = 4, or L _CRBs = 6.

Optionally, the range of values of L _CRBs can be as follows:

L _CRBs =1, or L _CRBs = 2.

3. Receive the PDSCH on the virtual resource block determined by RB _start and L _CRBs .

4. Optionally, in all of the above steps,

Electricity can be replaced by

The virtual resource block may also be replaced by a physical resource block, and the user equipment UE may be a non-MTC UE or an MTC UE.

[Embodiment 3]

In another embodiment of the invention, the steps of PDSCH resource allocation performed by the user equipment UE are as follows:

1. Receiving downlink control information (DCI), which includes resource block allocation information (or resource block allocation indication); and determining, by using resource block allocation information, an NB number (n _NB ), a starting resource block (RB _start) ), and a set length from a starting resource block of the consecutive virtual resource blocks allocated (L _CRBs); wherein, RB _start reference of PRBs (i.e. RB _start = 0 corresponds PRB) may be made of the number of RB _ref n _{NB is} determined.

Alternatively, the DCI may include indication information for indicating the determined RB _ref manner, such as with 1 bit is indicated in the method of Example 2 step determines RB _ref embodiment according to the present invention, it is determined according to the prior art RB _ref (ie RB _ref is equal to the first PRB of the indicated NB).

Optionally, the DCI may include the enabling information for indicating whether the PDSCH resource allocation is performed on the user equipment UE according to the method in the embodiment of the present invention; for example, the enabling information may instruct the UE to interpret the resource block according to the prior art. The content of the information is allocated, or the UE is instructed to interpret the content of the resource block allocation information according to the method described in the embodiment of the present invention. Optionally, the foregoing enabling information may be sent by using a radio resource control (RRC) message instead of being sent by using a DCI, or sent by both an RRC message and a DCI.

2. Determine RB _ref by one of the following methods:

The number of the first PRB of the NB numbered n _NB indicated is

which is

among them

· Method 1 of determining RB _ref : Calculate RB _{ref by} :

among them

P is the RBG size.

Optionally, additionally, the NB numbered n _NB is moved such that its first PRB becomes RB _ref .

· Method 2 of determining RB _ref : Calculate RB _{ref by} :

among them

P is the RBG size.

Optionally, additionally, the NB numbered n _NB is moved such that its first PRB becomes RB _ref .

· Method 3 of determining RB _ref : Calculate RB _{ref by} :

among them

P is the RBG size.

Optionally, additionally, the NB numbered n _NB is moved such that its first PRB becomes RB _ref .

· Method 4 of determining RB _ref : Calculate RB _{ref by} :

among them

P is the RBG size.

Optionally, additionally, the NB numbered n _NB is moved such that its first PRB becomes RB _ref .

3. Determine RB _start and L _CRBs by one of the following methods:

3.1 [Method 1 for determining RB _start and L _CRBs ]

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB _start and one L _CRBs .

The correspondence between RIV and RB _start and L _CRBs can use one of the following methods:

[Method 1 of mapping RB _start and L _CRBs to RIV]

[Method 2 of mapping RB _start and L _CRBs to RIV]

Or use other similar methods to linearly map RB _start and L _CRBs to RIV.

3.2 [Method 2 for determining RB _start and L _CRBs ]

Two independent indications are included in the resource block allocation information, which are used to indicate RB _start and L _CRBs , respectively. For example, RB _start and L _CRBs are indicated by two separate fields, respectively, or RB _{start is} indicated by some or some bits of a field, and another bit or bits of the other field indicates L _CRBs .

4. Receive the PDSCH on the virtual resource block determined by RB _start and L _CRBs .

5. Optionally, if the PDSCH is configured to perform frequency hopping (eg, the RRC parameter mpdcch-pdsch-HoppingConfig indicates that the frequency hopping is activated and the frequency hopping flag in the DCI indicates frequency hopping), the frequency occupied by the PDSCH is changed each time. In the position, the value of the new n _NB is calculated by using the prior art, and then RB _ref , RB _start and L _{CRBs are} re-determined by using steps 1, 2, and 3.

6. Optionally, in all of the above steps,

Can also be replaced by

The virtual resource block may also be replaced by a physical resource block, and the user equipment UE may be a non-MTC UE or an MTC UE.

In the above step 2, a method for determining the RB _ref, RB _ref Second determination method, determination method and determination RB _ref three RB _ref four methods may be 8, 9, 10 and 11 illustrate, respectively.

[Embodiment 4]

In another embodiment of the invention, the steps of PDSCH resource allocation performed by the user equipment UE are as follows:

1. Receiving downlink control information (DCI), which includes resource block allocation information (or resource block allocation indication); and determining, by using resource block allocation information, an NB number (n _NB ), a starting resource block (RB _start) ), and a set length from a starting resource block of the consecutive virtual resource blocks allocated (L _CRBs); which, RB _start reference of PRBs (i.e. RB _start = 0 corresponds PRB) may be made of the number of RB _ref n _NB determines the maximum value of L _CRBs

Can be determined by n _NB .

Optionally, the DCI may include the enabling information for indicating whether the PDSCH resource allocation is performed on the user equipment UE according to the method in the embodiment of the present invention; for example, the enabling information may instruct the UE to interpret the resource block according to the prior art. The content of the information is allocated, or the UE is instructed to interpret the content of the resource block allocation information according to the method described in the embodiment of the present invention. Optionally, the foregoing enabling information may be sent by using a radio resource control (RRC) message instead of being sent by using a DCI, or sent by using an RRC message or by using a DCI.

2. Determine RB _ref and by the following method

The number of the first PRB of the NB numbered n _NB is

which is

among them

Calculate RB _{ref by} :

Calculated by

Where P is the RBG size.

3. Determine RB _start and L _CRBs by one of the following methods:

3.1 [Method 1 for determining RB _start and L _CRBs ]

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB _start and one L _CRBs .

The correspondence between RIV and RB _start and L _CRBs can use one of the following methods:

[Method 1 of mapping RB _start and L _CRBs to RIV]

[Method 2 of mapping RB _start and L _CRBs to RIV]

RIV=6·RB start +L CRBs -1

Or use other similar methods to linearly map RB _start and L _CRBs to RIV.

3.2 [Method 2 for determining RB _start and L _CRBs ]

Two independent indications are included in the resource block allocation information, which are used to indicate RB _start and L _CRBs , respectively. For example, RB _start and L _CRBs are indicated by two separate fields, respectively, or RB _{start is} indicated by some or some bits of a field, and another bit or bits of the other field indicates L _CRBs .

In all of the above methods for determining RB _start and L _CRBs ,

RB _start of the range may be as follows:

The range of L _CRBs can be as follows:

4. Receive the PDSCH on the virtual resource block determined by RB _start and L _CRBs .

5. Optionally, in all of the above steps,

Can also be replaced by

The virtual resource block may also be replaced by a physical resource block, and the user equipment UE may be a non-MTC UE or an MTC UE.

[Embodiment 5]

In another embodiment of the invention, the steps of PDSCH resource allocation performed by the user equipment UE are as follows:

1. Receiving downlink control information (DCI), which includes resource block allocation information (or resource block allocation indication); and determining, by using resource block allocation information, a starting resource block (RB _start ) and a starting resource block a set length (L _CRBs) virtual resource blocks starting consecutively allocated; wherein, RB _start reference of PRBs, i.e. RB _start = 0 corresponds of PRBs, the system numbered PRB 0, i.e., n _PRB = 0 Suo Corresponding PRB. Or RB _start is the PRB number of the starting resource block in the system. The resource block allocation information may occupy all the bits of the "Resource Block Assignment" field in the DCI, and may also occupy a part of the bits of the "Resource Block Assignment" field. For example, the total number of bits in the Resource Block Allocation field can be

All used to indicate resource block allocation information.

Optionally, the DCI may include the enabling information for indicating whether the PDSCH resource allocation is performed on the user equipment UE according to the method in the embodiment of the present invention; for example, the enabling information may instruct the UE to interpret the resource block according to the prior art. The content of the information is allocated, or the UE is instructed to interpret the content of the resource block allocation information according to the method described in the embodiment of the present invention. Optionally, the foregoing enabling information may be sent by using a radio resource control (RRC) message instead of being sent by using a DCI, or sent by using an RRC message or by using a DCI.

2. Determine RB _start and L _CRBs .

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB _start and one L _CRBs .

First, the RIV' is determined based on the following relationship between the RIV and the intermediate variable RIV':

Alternatively, the relationship between RIV and RIV' can be as follows:

RIV=RIV'

Secondly, RB _start and L _CRBs are determined _{according to} the correspondence between RIV' and RB _start and L _CRBs .

The correspondence between RIV' and RB _start and L _CRBs can use one of the following methods:

[Method 1 of mapping RB _start and L _CRBs to RIV']

[Method 2 of mapping RB _start and L _CRBs to RIV']

[Method 3 of mapping RB _start and L _CRBs to RIV']

RIV'=Q·RB _start /P+(L _CRBs -M)/T

In the above method 2 of mapping RB _start and L _CRBs to RIV':

· N is a constant whose value can be one of these values: 0, 1, 2, 3, 4, 5, 6. Alternatively, N may be equal to the smallest of the set of value ranges of L _CRBs . Optionally, different

Can correspond to different values of N, for example, when

When N=2, when

When N=2, when

When N=3, when

When N=4, when

When, N=4.

· Alternatively, N can be equal to M.

The above method 3 of mapping RB _start and L _CRBs to RIV':

Q is a constant whose value can be one of these values: 1, 2, 3, 4, 5, 6. Alternatively, Q may be equal to the size of the set of value ranges of L _CRBs . Optionally, different

Can correspond to different values of Q, for example, when

When Q=3, when

When Q=3, when

When Q=2, when

When Q=2, when

When, Q=2.

The above method 1, method 2, and method 3 of mapping RB _start and L _CRBs to RIV':

· P is the RBG size.

· The set of values for L _CRBs can be one of these sets: {6}, {5, 6}, {4, 6}, {3, 6}, {2, 6}, {1, 6}, {4,5,6},{3,5,6},{2,5,6},{1,5,6},{3,4,6},{2,4,6},{1 , 4,6},{2,3,6},{1,3,6}, {1,2,6},{3,4,5,6},{2,4,5,6}, {1,4,5,6},{2,3,4,6},{1,3,4,6},{1,2,3,6},{2,3,4,5,6 }, {1, 2, 3, 4, 5, 6}. Optionally, different

Can correspond to different _sets of value ranges of L _CRBs , for example, when

When the set of values of L _CRBs is {2, 4, 6}, when

When the set of values of L _CRBs is {2, 4, 6}, when

When the set of values of L _CRBs is {3, 6}, when

When the set of values of L _CRBs is {4,6}, when

The set of values of L _CRBs is {4, 6}.

· M is a constant whose value can be one of these values: 0, 1, 2, 3, 4, 5, 6. Alternatively, M may be equal to the smallest of the set of value ranges of L _CRBs . Optionally, different

Can correspond to different values of M, for example, when

When M=2, when

When M=2, when

When M=3, when

When M=4, when

When, M=4.

· T is a constant whose value can be one of these values: 1, 2, 3. Alternatively, T may be equal to the difference between the second smallest value in the set of value ranges of L _CRBs minus the smallest value. Optionally, different

Can correspond to the value of different T, for example, when

When T=2, when

When T=2, when

When T=3, when

When T=2, when

When, T=2.

· RB _start values may RB _start = n · P, where n is a nonnegative integer, which may range

Optionally, the value range of n can be

At this time, when

The value of L _CRBs is limited. For example, the set of value ranges of L _CRBs can only contain one or more less than or equal to

A positive integer, even if the set of value ranges is not equal to the set of values of the above L _CRBs . RB _start values can also be a set of

Other subsets, or collections

itself.

In the foregoing method 1, method 2, and method 3 of mapping RB _start and L _CRBs to RIV', optionally, for a given L _CRBs , the range of values of RB _start may be imposed as follows: RB _start And RB _start + L _CRBs -1 do not belong to the same NB. For example, RB _start part of a NB, the RB _start + L _CRBs -1 belonging to a different NB; another example, RB _start part of a NB, the RB _start + L _CRBs -1 does not belong to any NB; another example, RB _start does not belong to any NB, and RB _start + L _CRBs -1 belongs to a certain NB; for example, RB _start and RB _start + L _CRBs -1 do not belong to any NB.

3. Receive the PDSCH on the virtual resource block determined by RB _start and L _CRBs .

4. Optionally, in all of the above steps,

Can also be replaced by

The virtual resource block may also be replaced by a physical resource block, and the user equipment UE may be a non-MTC UE or an MTC UE.

[Embodiment 6]

In another embodiment of the invention, the steps of PDSCH resource allocation performed by the user equipment UE are as follows:

1. Receiving downlink control information (DCI), which includes resource block allocation information (or resource block allocation indication); and determining, by using resource block allocation information, a starting resource block (RB _start ) and a starting resource block a set length (L _CRBs) virtual resource blocks starting consecutively allocated; wherein, RB _start reference of PRBs, i.e. RB _start = 0 corresponds of PRBs, the system numbered PRB 0, i.e., n _PRB = 0 Suo Corresponding PRB. Or RB _start is the PRB number of the starting resource block in the system. The resource block allocation information may occupy all the bits of the "Resource Block Assignment" field in the DCI, and may also occupy a part of the bits of the "Resource Block Assignment" field. For example, the total number of bits in the Resource Block Allocation field can be

All used to indicate resource block allocation information.

Optionally, the DCI may include the enabling information for indicating whether the PDSCH resource allocation is performed on the user equipment UE according to the method in the embodiment of the present invention; for example, the enabling information may instruct the UE to interpret the resource block according to the prior art. The content of the information is allocated, or the UE is instructed to interpret the content of the resource block allocation information according to the method described in the embodiment of the present invention. Optionally, the foregoing enabling information may be sent by using a radio resource control (RRC) message instead of being sent by using a DCI, or sent by using an RRC message or by using a DCI.

2. Determine RB _start and L _CRBs .

The resource block allocation information includes a resource indication value (RIV), and each RIV value corresponds to one RB _start and one L _CRBs . To determine the values of RB _start and L _CRBs you can use one of the following methods:

[Method 1 of determining the values of RB _start and L _CRBs ]

First, the RIV' is determined based on the following relationship between the RIV and the intermediate variable RIV':

Alternatively, the relationship between RIV and RIV' can be as follows:

RIV=RIV'

Secondly, RB _start and L _CRBs are determined _{according to} the correspondence between RIV' and RB _start and L _CRBs .

The values of RB _start and L _CRBs can be mapped to the value of RIV' by means of a table, for example, for

The mappings of 15, 25, 50, 75, and 100 can be performed by Table 16, Table 17, Table 18, Table 19, and Table 20, respectively. Optionally, only a part of the table in Table 16, Table 17, Table 18, Table 19, and Table 20 may be defined. For example, the embodiment of the present invention may not be applied.

The system at this time is not defined in Table 16.

Table 16: Mapping table from (L _CRBs , RB _start ) to RIV'

RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )
0	(1,0)	5	(3,6)	10	(5,0)	15	(6,2)
1	(1,14)	6	(3,12)	11	(5,4)	16	(6,4)
2	(2,0)	7	(4,0)	12	(5,6)	17	(6,6)
3	(2,6)	8	(4,4)	13	(5,10)
4	(3,0)	9	(4,6)	14	(6,0)

Table 17: Mapping table from (L _CRBs , RB _start ) to RIV'

RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )
0	(1,12)	7	(4,4)	14	(5,8)	twenty one	(6,8)
1	(2,12)	8	(4,10)	15	(5,10)	twenty two	(6,10)
2	(2,18)	9	(4,12)	16	(5,12)	twenty three	(6,12)
3	(3,4)	10	(4,16)	17	(5,16)	twenty four	(6,14)
4	(3,10)	11	(4,18)	18	(5,18)	25	(6,16)
5	(3,12)	12	(5,2)	19	(6,2)	26	(6,18)
6	(3,18)	13	(5,4)	20	(6,4)

Table 18: Mapping table from (L _CRBs , RB _start ) to RIV'

RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )
0	(1,0)	15	(3,30)	30	(5,12)	45	(6,9)
1	(2,0)	16	(3,36)	31	(5,15)	46	(6,12)
2	(2,6)	17	(3,42)	32	(5,18)	47	(6,15)
3	(2,12)	18	(4,0)	33	(5,21)	48	(6,18)
4	(2,18)	19	(4,6)	34	(5,24)	49	(6,21)
5	(2,24)	20	(4,12)	35	(5,27)	50	(6,24)
6	(2,30)	twenty one	(4,18)	36	(5,30)	51	(6,27)
7	(2,36)	twenty two	(4,24)	37	(5,33)	52	(6,30)
8	(2,42)	twenty three	(4,30)	38	(5,36)	53	(6,33)
9	(2,48)	twenty four	(4,36)	39	(5,39)	54	(6,36)
10	(3,0)	25	(4,42)	40	(5,42)	55	(6,39)
11	(3,6)	26	(5,0)	41	(5,45)	56	(6,42)
12	(3,12)	27	(5,3)	42	(6,0)
13	(3,18)	28	(5,6)	43	(6,3)
14	(3,24)	29	(5,9)	44	(6,6)

Table 19: Mapping table from (L _CRBs , RB _start ) to RIV'

RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )
0	(1,0)	12	(4,0)	twenty four	(5,16)	36	(6,12)
1	(2,0)	13	(4,4)	25	(5,24)	37	(6,16)
2	(2,12)	14	(4,12)	26	(5,28)	38	(6,20)
3	(2,24)	15	(4,16)	27	(5,36)	39	(6,24)
4	(2,36)	16	(4,24)	28	(5,40)	40	(6,28)
5	(3,0)	17	(4,28)	29	(5,48)	41	(6,32)
6	(3,12)	18	(4,36)	30	(5,52)	42	(6,36)
7	(3,24)	19	(4,48)	31	(5,60)	43	(6,40)
8	(3,36)	20	(4,60)	32	(5,64)	44	(6,48)
9	(3,48)	twenty one	(5,0)	33	(6,0)	45	(6,52)
10	(3,60)	twenty two	(5,4)	34	(6,4)	46	(6,60)
11	(3,72)	twenty three	(5,12)	35	(6,8)	47	(6,64)

Table 20: Mapping table from (L _CRBs , RB _start ) to RIV'

RIV'	(L CRBs, RB start)	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )	RIV'	(L CRBs , RB start )
0	(1,0)	13	(4,24)	26	(5,36)	39	(6,16)
1	(2,0)	14	(4,36)	27	(5,40)	40	(6,24)
2	(3,0)	15	(4,48)	28	(5,48)	41	(6,28)
3	(3,12)	16	(4,60)	29	(5,52)	42	(6,36)
4	(3,24)	17	(4,72)	30	(5,60)	43	(6,40)
5	(3,36)	18	(4,84)	31	(5,64)	44	(6,48)

6	(3,48)	19	(4,96)	32	(5,72)	45	(6,52)
7	(3,60)	20	(5,0)	33	(5,76)	46	(6,60)
8	(3,72)	twenty one	(5,4)	34	(5,84)	47	(6,64)
9	(3,84)	twenty two	(5,12)	35	(5,88)	48	(6,72)
10	(3,96)	twenty three	(5,16)	36	(6,0)	49	(6,76)
11	(4,0)	twenty four	(5,24)	37	(6,4)	50	(6,84)
12	(4,12)	25	(5,28)	38	(6,12)	51	(6,88)

It should be noted that Table 16, Table 17, Table 18, Table 19, and Table 20 are just one way to implement mapping from (L _CRBs , RB _start ) to RIV'. For any of these tables, maintaining RIV 'and (L _CRBs, RB _start) have the same value set and each RIV' value corresponds to a unique (L _CRBs, RB _start) value premise Next, the mapping relationship from (L _CRBs , RB _start ) to RIV' can be arbitrarily changed.

Optionally, in each of Table 16, Table 17, Table 18, Table 19, and Table 20, only (L _CRBs , RB _start ) items in which L _CRBs and/or RB _start satisfy a certain value condition may be defined. The other (L _CRBs , RB _start ) terms are not defined; at this time, the RIV' corresponding to each (L _CRBs , RB _start ) term still starts from the minimum value of RIV' in the corresponding table, and is allocated from small to large. For example, in Table 16, if the set of value ranges of L _CRBs is {6}, only the values (L _CRBs , RB _start ) defined in the table are (6, 0), (6, 2), (6, For items of 4) and (6, 6), the values of the corresponding RIV's may be 0, 1, 2, and 3, respectively.

The ranges of L _CRBs and RB _start can be as follows:

· The set of values for L _CRBs can be one of these sets: {6}, {5, 6}, {4, 6}, {3, 6}, {2, 6}, {1, 6}, {4,5,6},{3,5,6},{2,5,6},{1,5,6},{3,4,6},{2,4,6},{1 , 4,6},{2,3,6},{1,3,6},{1,2,6},{3,4,5,6},{2,4,5,6}, {1,4,5,6},{2,3,4,6},{1,3,4,6},{1,2,3,6},{2,3,4,5,6 }. Optionally, different

Can correspond to different _sets of value ranges of L _CRBs , for example, when

When the set of values of L _CRBs is {2, 4, 6}, when

When the set of values of L _CRBs is {2, 4, 6}, when

When the set of values of L _CRBs is {3, 6}, when

When the set of values of L _CRBs is {4,6}, when

The set of values of L _CRBs is {4, 6}.

· RB _start values may RB _start = n · P, where n is a nonnegative integer, which may range

Optionally, the value range of n can be

At this time, when

The value of L _CRBs is limited. For example, the set of value ranges of L _CRBs can only contain one or more less than or equal to

A positive integer, even if the set of value ranges is not equal to the set of values of the above L _CRBs . RB _start values can also be a set of

Other subsets.

[Method 2 of determining the values of RB _start and L _CRBs ]

The values of RB _start and L _CRBs can be mapped to the value of RIV in a tabular manner, for example, for

The mappings of 15, 25, 50, 75, and 100 can be performed by Table 21, Table 22, Table 23, Table 24, and Table 25, respectively. Optionally, only a part of the tables in Table 21, Table 22, Table 23, Table 24, and Table 25 may be defined. For example, the embodiment of the present invention may not be applied.

The system at this time is not defined in Table 21.

Table 21: Mapping table from (L _CRBs , RB _start ) to RIV

RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )
twenty one	(1,0)	26	(3,6)	31	(5,0)	57	(6,2)
twenty two	(1,14)	27	(3,12)	53	(5,4)	58	(6,4)
twenty three	(2,0)	28	(4,0)	54	(5,6)	59	(6,6)
twenty four	(2,6)	29	(4,4)	55	(5,10)
25	(3,0)	30	(4,6)	56	(6,0)

Table 22: Mapping table from (L _CRBs , RB _start ) to RIV

RIV	L CRBs , RB start )	RIV	L CRBs , RB start )	RIV	L CRBs , RB start )	RIV	(L CRBs , RB start )
twenty one	(1,12)	28	(4,4)	56	(5,8)	63	(6,8)
twenty two	(2,12)	29	(4,10)	57	(5,10)	85	(6,10)
twenty three	(2,18)	30	(4,12)	58	(5,12)	86	(6,12)
twenty four	(3,4)	31	(4,16)	59	(5,16)	87	(6,14)
25	(3,10)	53	(4,18)	60	(5,18)	88	(6,16)
26	(3,12)	54	(5,2)	61	(6,2)	89	(6,18)
27	(3,18)	55	(5,4)	62	(6,4)

Table 23: Mapping table from (L _CRBs , RB _start ) to RIV

RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )
twenty one	(1,0)	57	(3,30)	93	(5,12)	150	(6,9)
twenty two	(2,0)	58	(3,36)	94	(5,15)	151	(6,12)
twenty three	(2,6)	59	(3,42)	95	(5,18)	152	(6,15)
twenty four	(2,12)	60	(4,0)	117	(5,21)	153	(6,18)
25	(2,18)	61	(4,6)	118	(5,24)	154	(6,21)
26	(2,24)	62	(4,12)	119	(5,27)	155	(6,24)
27	(2,30)	63	(4,18)	120	(5,30)	156	(6,27)
28	(2,36)	85	(4,24)	121	(5,33)	157	(6,30)
29	(2,42)	86	(4,30)	122	(5,36)	158	(6,33)
30	(2,48)	87	(4,36)	123	(5,39)	159	(6,36)
31	(3,0)	88	(4,42)	124	(5,42)	181	(6,39)
53	(3,6)	89	(5,0)	125	(5,45)	182	(6,42)
54	(3,12)	90	(5,3)	126	(6,0)
55	(3,18)	91	(5,6)	127	(6,3)
56	(3,24)	92	(5,9)	149	(6,6)

Table 24: Mapping table from (L _CRBs , RB _start ) to RIV

RIV	(L CRBs, RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )
twenty one	(1,0)	54	(4,0)	87	(5,16)	120	(6,12)
twenty two	(2,0)	55	(4,4)	88	(5,24)	121	(6,16)
twenty three	(2,12)	56	(4,12)	89	(5,28)	122	(6,20)
twenty four	(2,24)	57	(4,16)	90	(5,36)	123	(6,24)
25	(2,36)	58	(4,24)	91	(5,40)	124	(6,28)
26	(3,0)	59	(4,28)	92	(5,48)	125	(6,32)
27	(3,12)	60	(4,36)	93	(5,52)	126	(6,36)
28	(3,24)	61	(4,48)	94	(5,60)	127	(6,40)
29	(3,36)	62	(4,60)	95	(5,64)	149	(6,48)
30	(3,48)	63	(5,0)	117	(6,0)	150	(6,52)
31	(3,60)	85	(5,4)	118	(6,4)	151	(6,60)
53	(3,72)	86	(5,12)	119	(6,8)	152	(6,64)

Table 25: Mapping table from (L _CRBs , RB _start ) to RIV

RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )	RIV	(L CRBs , RB start )
twenty one	(1,0)	55	(4,24)	89	(5,36)	123	(6,16)
twenty two	(2,0)	56	(4,36)	90	(5,40)	124	(6,24)
twenty three	(3,0)	57	(4,48)	91	(5,48)	125	(6,28)
twenty four	(3,12)	58	(4,60)	92	(5,52)	126	(6,36)

25	(3,24)	59	(4,72)	93	(5,60)	127	(6,40)
26	(3,36)	60	(4,84)	94	(5,64)	149	(6,48)
27	(3,48)	61	(4,96)	95	(5,72)	150	(6,52)
28	(3,60)	62	(5,0)	117	(5,76)	151	(6,60)
29	(3,72)	63	(5,4)	118	(5,84)	152	(6,64)
30	(3,84)	85	(5,12)	119	(5,88)	153	(6,72)
31	(3,96)	86	(5,16)	120	(6,0)	154	(6,76)
53	(4,0)	87	(5,24)	121	(6,4)	155	(6,84)
54	(4,12)	88	(5,28)	122	(6,12)	156	(6,88)

It should be noted that Table 21, Table 22, Table 23, Table 24, and Table 25 are just one way to implement mapping from (L _CRBs , RB _start ) to RIV. For any of these tables, under the _premise that the RIV and (L _CRBs , RB _start ) values are unchanged and the value of each RIV corresponds to a unique value (L _CRBs , RB _start ), The mapping relationship from (L _CRBs , RB _start ) to RIV can be arbitrarily changed.

Optionally, in each of Table 21, Table 22, Table 23, Table 24, and Table 25, only (L _CRBs , RB _start ) items in which L _CRBs and/or RB _start satisfy a certain value condition may be defined. The other (L _CRBs , RB _start ) terms are not defined; at this time, the RIV corresponding to each (L _CRBs , RB _start ) item still starts from the minimum value of RIV in the corresponding table, and is allocated from small to large. For example, in Table 21, if the set of value ranges of L _CRBs is {6}, only the values (L _CRBs , RB _start ) defined in the table are (6, 0), (6, 2), (6, For items of 4) and (6, 6), the corresponding RIV values may be 21, 22, 23, and 24, respectively.

The ranges of L _CRBs and RB _start can be as follows:

· The set of values for L _CRBs can be one of these sets: {6}, {5, 6}, {4, 6}, {3, 6}, {2, 6}, {1, 6}, {4,5,6},{3,5,6},{2,5,6},{1,5,6},{3,4,6},{2,4,6},{1 , 4,6},{2,3,6},{1,3,6},{1,2,6},{3,4,5,6},{2,4,5,6}, {1,4,5,6},{2,3,4,6},{1,3,4,6},{1,2,3,6},{2,3,4,5,6 }. Optionally, different

Can correspond to different _sets of value ranges of L _CRBs , for example, when

When the set of values of L _CRBs is {2, 4, 6}, when

When the set of values of L _CRBs is {2, 4, 6}, when

When the set of values of L _CRBs is {3, 6}, when

When the set of values of L _CRBs is {4,6}, when

The set of values of L _CRBs is {4, 6}.

· RB _start values may RB _start = n · P, where n is a nonnegative integer, which may range

Optionally, the value range of n can be

At this time, when

The value of L _CRBs is limited. For example, the set of value ranges of L _CRBs can only contain one or more less than or equal to

A positive integer, even if the set of value ranges is not equal to the set of values of the above L _CRBs . RB _start values can also be a set of

Other subsets.

3. Receive the PDSCH on the virtual resource block determined by RB _start and L _CRBs .

4. Optionally, in all of the above steps,

Can also be replaced by

The virtual resource block may also be replaced by a physical resource block, and the user equipment UE may be a non-MTC UE or an MTC UE.

FIG. 12 is a block diagram showing a user equipment UE according to an embodiment of the present invention. As shown in FIG. 12, the user equipment UE 120 includes a processor 121 and a memory 122. Processor 121 can include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory 122 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a nonvolatile memory (such as a flash memory), or other memory. Program instructions are stored on the memory 122. The instructions, when executed by the processor 121, can perform the above-described methods performed by the user equipment as described in detail in this disclosure.

The program running on the device according to the present invention may be a program that causes a computer to implement the functions of the embodiments of the present invention by controlling a central processing unit (CPU). The program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory system.

A program for realizing the functions of the embodiments of the present invention can be recorded on a computer readable recording medium. The corresponding functions can be realized by causing a computer system to read programs recorded on the recording medium and execute the programs. The so-called "computer system" herein may be a computer system embedded in the device, and may include an operating system or hardware such as a peripheral device. The "computer readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium of a short-term dynamic storage program, or any other recording medium readable by a computer.

The various features or functional blocks of the apparatus used in the above embodiments may be implemented or executed by circuitry (e.g., monolithic or multi-chip integrated circuits). Circuitry designed to perform the functions described in this specification can include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or any combination of the above. A general purpose processor may be a microprocessor or any existing processor, controller, microcontroller, or state machine. The above circuit may be a digital circuit or an analog circuit. One or more embodiments of the present invention may also be implemented using these new integrated circuit technologies in the context of new integrated circuit technologies that have replaced existing integrated circuits due to advances in semiconductor technology.

Further, the present invention is not limited to the above embodiment. Although various examples of the embodiments have been described, the invention is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors can be used as terminal devices or communication devices such as AV devices, kitchen devices, cleaning devices, air conditioners, office equipment, vending machines, and other home appliances.

As above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific structure is not limited to the above embodiments, and the present invention also includes any design modifications not departing from the gist of the present invention. In addition, various modifications may be made to the invention within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. Further, the components having the same effects described in the above embodiments may be substituted for each other.

Claims (10)

1. A method performed by a user equipment, comprising:

   Receiving downlink control information DCI, where the downlink control information DCI includes resource block allocation information;

   Determining, by the resource block allocation information, a starting resource block RB _start and a length L _CRBs of a group of consecutively allocated resource blocks starting from the starting resource block; and

   Receiving a physical downlink shared channel PDSCH on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block,

   The resource block allocation information includes a resource indication value RIV corresponding to the intermediate variable RB' _start and the length L _{CRBs of} the resource block, and the intermediate variable RB' _start corresponds to the starting resource block RB _start .
2. The method of claim 1 wherein

   The resource indication value RIV and said intermediate variable RB _'start length L _CRBs and the correspondence between the resource blocks by the resource indication value RIV of the intermediate variable RB' and the length L _{CRBs Start} resource blocks The mapping relationship between them is represented.
3. The method of claim 2, wherein

   The intermediate variable RB 'corresponding relationship between the _start and the _start of a starting resource block RB RB by the intermediate variables' _start and the start resource block RB mapping relationship between the _start expressed.
4. The method according to claim 2 or 3, wherein

   The mapping relationship is one of a linear mapping, a table mapping, and a piecewise linear mapping.
5. The method according to claim 2 or 3, wherein

   The value range of the initial resource block RB _{start is} a union or a subset of the two sets of RB _start value set 1 and RB _start value set 2 defined below.

   RB _start value set 1:

   

   among them,

   

   For the number of narrowband NBs,

   

   For the number of resource blocks,

   RB _start value set 2:

   {y|y=n _RBG ·P}

   among them,

   

   P is the size of the resource block group RBG,

   

   The number of RGB of the resource block group.
6. The method according to claim 2 or 3, wherein

   The length of the resource block L _CRBs ranges from:

   

   among them,

   

   The number of virtual resource blocks.
7. A method performed by a user equipment, comprising:

   Receiving downlink control information DCI, where the downlink control information DCI includes resource block allocation information;

   Determining, by the resource block allocation information, a starting resource block RB _start and a length L _CRBs of a group of consecutively allocated resource blocks starting from the starting resource block;

   Determining a narrowband NB number n _NB by using the resource block allocation information, and determining, by the narrowband NB number n _NB, a reference physical resource block PRB of the initial resource block RB _start , that is, a PRB corresponding to RB _start =0 Number RB _ref ;

   Determining, by the number RB _ref , a number of a PRB corresponding to the initial resource block RB _start ; and

   A physical downlink shared channel PDSCH is received on a resource block determined by the start resource block RB _start and the length L _CRBs of the resource block.
8. A method performed by a user equipment, comprising:

   Receiving downlink control information DCI, where the downlink control information DCI includes resource block allocation information;

   Determining the narrowband NB number n _NB by using the resource block allocation information, and determining, by the narrowband NB number n _NB , the reference physical resource block PRB of the initial resource block RB _start , that is, the number RB of the PRB corresponding to RB _start =0 _Ref and the maximum length of LCRBs for a set of consecutively allocated resource blocks starting from the starting resource block

   

   Through the number RB _ref , the maximum length of the resource block L _CRBs

   

   And the resource block allocation information to determine the starting resource block RB _start and the length L _{CRBs of} the resource block; and

   A physical downlink shared channel PDSCH is received on a resource block determined by the start resource block RB _start and the length L _CRBs of the resource block.
9. A method performed by a user equipment, comprising:

   Receiving downlink control information DCI, where the downlink control information DCI includes resource block allocation information;

   Determining, by the resource block allocation information, a starting resource block RB _start and a length L _CRBs of a group of consecutively allocated resource blocks starting from the starting resource block; and

   Receiving a physical downlink shared channel PDSCH on the resource block determined by the start resource block RB _start and the length L _CRBs of the resource block,

   The resource block allocation information includes a resource indication value RIV corresponding to the intermediate variable RIV', and the intermediate variable RIV' corresponds to the starting resource block RB _start and the length L _{CRBs of} the resource block.
10. A user equipment comprising:

    Processor;

    a memory on which an instruction is stored;

    The instructions, when executed by the processor, cause the user equipment to perform the method of any of claims 1-9.

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