CN112399599B

CN112399599B - Method and device for indicating frequency domain resources

Info

Publication number: CN112399599B
Application number: CN202010281579.9A
Authority: CN
Inventors: 马蕊香; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-12
Filing date: 2020-04-10
Publication date: 2023-05-12
Anticipated expiration: 2040-04-10
Also published as: CN112399599A

Abstract

The application provides a method and a device for indicating frequency domain resources. The network equipment sends a resource indication value RIV to the terminal equipment, wherein the RIV indicates a starting position S and a length L of a first frequency domain resource, and the first frequency domain resource is a frequency domain resource used by first data; wherein the granularity of S and L is independently configurable. The value of RIV is related to the size of the granularity of S and/or the size of the granularity of L. The terminal equipment determines a first frequency domain resource according to the RIV; and transmitting the first data to the network device on the first frequency domain resource or receiving the first data from the network device on the first frequency domain resource. By the method, the bit number of DCI can be effectively reduced, and the reliability of a physical downlink control channel is further improved.

Description

Method and device for indicating frequency domain resources

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating a frequency domain resource.

Background

In the evolution process, the wireless communication system requires faster data communication speed, lower time delay and lower power consumption, and simultaneously requires ensuring the reliability of data communication. Wherein the reliability of the data communication comprises the reliability of a physical downlink control channel (physical downlink control channel, PDCCH). The PDCCH carries downlink control information (downlink control information, DCI) including scheduling information for data communication. In order to ensure reliable reception of PDCCH, one way is to reduce the number of bits of DCI, so that the code rate of DCI may be reduced, thereby making it easier for the terminal device to successfully receive DCI.

Reducing the number of bits of the DCI may be achieved by reducing the number of bits of the frequency domain resource indication field contained in the DCI, however how to effectively reduce the number of bits of the frequency domain resource indication field remains to be solved.

Disclosure of Invention

The application provides a method, a device and a system for indicating frequency domain resources, which are beneficial to reducing the bit number of DCI by reducing the bit number of a frequency domain resource indication domain, so as to improve the reliability of PDCCH.

In a first aspect, a method for indicating a frequency domain resource in an embodiment of the present application includes:

the network equipment sends a resource indication value RIV to the terminal equipment, wherein the RIV is used for indicating the starting position S and the length L of a first frequency domain resource, and the first frequency domain resource is part or all of frequency domain resources used by first data; the granularity of S is a first resource block group RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, the size of the second RBG is RBG_L, and the value of RIV is related to the RBG_S and/or the RBG_L; the terminal equipment receives a resource indication value RIV from the network equipment and determines the first frequency domain resource according to the RIV; the terminal equipment sends the first data to the network equipment on the first frequency domain resource or receives the first data from the network equipment on the first frequency domain resource; wherein S and RIV are integers greater than or equal to zero, and L, RBG_S and RBG_L are positive integers.

In one possible design, the value of the RIV is related to the rbg_s and/or the rbg_l, including:

when L is equal to 1, RIV is equal to S;

when the value of L is greater than 1,

wherein ,

to round down the symbol, N is the total number of resource blocks RB included in the first bandwidth portion BWP, the first BWP includes the first frequency domain resource, and the value of L ranges from 1 to ∈>

And L and S satisfy L.times.RBG_L+S.times.RBG_S.ltoreq.N, +.>

j is an integer, and 2.ltoreq.j.ltoreq.L.

In one possible design, provision is made for

When (when)

RIV＝N_S*(L-1)+S；

When (when)

When riv=n_s (n_l-l+1) + (n_s-S-1);

wherein ,

to round down the symbols, N is the total number of resource blocks RB included in the first bandwidth part BWP including the first frequency domain resources,/>

The value of L is 1 to +.>

And L and S satisfy l×rbg_l+s×rbg_s.ltoreq.n.

In one possible design, provision is made for

When (when)

When riv=n_l (L-1) +s+offset1;

when (when)

When riv=n_l, (n_l-l+1) + (n_l-S-1) +offset2,

wherein ,

to round down the symbols, offset1 and offset2 are integers, N is the total number of resource blocks RB included in the first bandwidth portion BWP including the first frequency domain resource,>

the value of L is 1 to +. >

And L and S satisfy l×rbg_l+s×rbg_s.ltoreq.n.

Alternatively, the offset1 and the offset2 may be the same or different, and may be sent by the network device to the terminal device through the third indication information and the fourth indication information in the higher layer signaling, respectively. The third indication information and the fourth indication information may be located in the same high layer signaling or may be located in different high layer signaling. Of course, at least one of the offset1 and the offset2 could also be made known to the terminal device instead using a predefined manner of protocol. In one possible implementation, offset1 = offset2 = (n_l-n_s) × (L-1).

A second aspect of embodiments of the present application provide a method for indicating a frequency domain resource, including:

the network equipment sends a resource indication value RIV to the terminal equipment, wherein the RIV is used for indicating the starting position S and the length L of a first frequency domain resource, and the first frequency domain resource is part or all of frequency domain resources used by first data; wherein the value of RIV is related to S and L;

the terminal equipment receives a resource indication value RIV from the network equipment and determines the first frequency domain resource according to the RIV; the terminal equipment sends the first data to the network equipment on the first frequency domain resource or receives the first data from the network equipment on the first frequency domain resource; wherein S and RIV are integers greater than or equal to zero, and L is a positive integer.

In one possible design, the value of the RIV is related to the S and the L, including:

if it is

Riv=n2 (L-1) +s;

otherwise, riv=n2 (n2-l+1) + (N2-S-1).

Wherein N2 represents the number of RBGs in the first BWP, and N2 can be also denoted as N _RBG . L represents the number of consecutive RBGs in the frequency domain, so l=1, …, N _RBG L can be denoted as L _RBG . S may represent RBG numbers of the frequency domain resource start position, so s=0, 1, …, N _RBG -1, S can be denoted RBG _start 。L+S≤N2，

Representing a rounding down.

Optionally, the network device sends first indication information, which indicates the number P of RBs included in a first RBG, where the first RBG is used to determine the number N2 of RBGs in the first BWP. The terminal equipment receives the first indication information and determines the number N2 of RBGs in the first BWP according to the first indication information.

Alternatively, N2 is determined according to the total number of RBs N included in the first BWP, and P:

optionally, among the N2 RBGs of the first BWP, the first RBG has a size of

The last RBG has a size of +.>

If (N+N) mod P>0, then->

Otherwise, go (L)>

The other RBGs in the first BWP have a size P.

In one possible design, the first frequency domain resource in the above design is a frequency domain resource corresponding to a first hop of first data in a frequency hopping scenario, and the method further includes that a terminal device receives a first frequency domain offset value from the network device, where the first frequency domain offset value indicates a space between a start position S' of a second frequency domain resource and the S on a frequency domain, the second frequency domain resource is a frequency domain resource corresponding to a second hop of the first data, a granularity of the first frequency domain offset value is a third RBG, and a size of the third RBG is the rbg_s; and determining the second frequency domain resource according to the first frequency domain offset value.

In one implementation, the second frequency domain resource S' may be determined specifically by the following formula:

S’＝(S+RBG _offset ) mod N ', where S' has a granularity of a third RBG, and the third RBG has a size of RBG_S; or alternatively, the process may be performed,

S’＝(S*RBG_S+RBG _offset * Rbg_s) mod n, where S' is granularity of RB.

N is the total number of RBs included in the first BWP, which includes the first frequency domain resource and the second frequency domain resource, or the first BWP is the BWP where the first data is located. RBG _offset I.e. the first frequency domain offset value. N' is

By setting RBG _offset The granularity of (1) is RBG_S, so that the resource allocation of the base station is simpler, and the complexity of the resource allocation of the network equipment is reduced. The complexity of terminal calculation can also be reduced. When the size of the third RBG with the granularity of S' is RBG_S, the complexity of base station resource allocation and terminal calculation can be further reduced; when the granularity of S' is RB, the second frequency domain position can be started from any RB, so that reasonable resource allocation is facilitated.

In one possible design, the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data in the frequency hopping scenario, and the method further includes: the terminal equipment receives a second frequency domain offset value from the network equipment, wherein the second frequency domain offset value indicates the interval between the starting position S' of the second frequency domain resource and the S on the frequency domain, the second frequency domain resource is the frequency domain resource corresponding to the second hop of the first data, the granularity of the second frequency domain offset value is a fourth RBG, and the size of the fourth RBG is RBG_L; and determining the second frequency domain resource according to the second frequency domain offset value, the RBG_S and the RBG_L.

In one implementation, the second frequency domain resource S 'may be determined specifically by the following formula, where S' takes RB as granularity:

S’＝(S*RBG_S+RBG _offset *RBG_L)modN；

n is the total number of RBs included in the first BWP, which includes the first frequency domain resource and the second frequency domain resource, or the first BWP is the BWP where the first data is located. RBG _offset I.e. the first frequency domain offset value.

By setting up RB _offset The granularity of (2) is RBG_L, and the granularity of (L) is unified, so that the interval between two adjacent frequency hopping is an integral multiple of RBG_L, and thus, the frequency domain resources can be continuously allocated, and the waste of the frequency domain resources is avoided. And the starting position of the frequency domain resource of each hop is indicated by the RB number, namely the starting position can be started from any RB, which is more beneficial to reasonable allocation of resources.

In one possible design, the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data in the frequency hopping scenario, and the method further includes: the terminal equipment receives a third frequency domain offset value from the network equipment, wherein the third frequency domain offset value indicates the interval between the starting position S' of the second frequency domain resource and the S on the frequency domain, the second frequency domain resource is the frequency domain resource corresponding to the second hop of the first data, and the granularity of the third frequency domain offset value is RB; and the terminal equipment determines the second frequency domain resource according to the third frequency domain offset value.

at this time, S' takes RBG as granularity; or alternatively, the process may be performed,

S’＝(S*RBG+RB _offset ) mod N, where S' is granularity of RB.

N is the total number of RBs included in the first BWP, and the first BWP includes the first frequency domain resource and the second frequency domain resource, or the first BWP is the BWP where the first data is located. RB (radio bearer) _offset I.e. the third frequency domain offset value. N' is

RB in this implementation _offset Granularity of RB, backward compatibility can be ensured. And ensures that the end device and the network device understand the offset consistently.

In one possible implementation, the rbg_s and the rbg_l are indicated by the same, or different signaling. The signaling may be higher layer signaling; still alternatively, at least one of the rbg_s and the rbg_l may be predefined by a protocol predefined manner.

Through the formula design of any RIV, S and L, the bit number required by the RIV is effectively reduced relative to the prior art, namely, the bit number indicated by the frequency domain resource is effectively reduced, so that the reliability of the PDCCH is improved. And RIV, S and L are in one-to-one correspondence, so that the frequency domain resource determined by the terminal equipment is consistent with the frequency domain resource actually indicated by the network equipment side, and the failure of subsequent data communication is avoided.

A third aspect provides a method for indicating a frequency domain resource according to an embodiment of the present application, including:

the network equipment sends a frequency domain resource index to the terminal equipment, wherein the frequency domain resource index is used for indicating the starting position S and the length L of a first frequency domain resource, and the first frequency domain resource is part or all of frequency domain resources used by first data; the granularity of S is a first resource block group RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, and the size of the second RBG is RBG_L; the terminal equipment receives the frequency domain resource index from the network equipment and determines the first frequency domain resource according to the frequency domain resource index; the terminal device sends the first data to the network device on the first frequency domain resource or receives the first data from the network device on the first frequency domain resource. Wherein S is an integer greater than or equal to zero, and L, RBG_S and RBG_L are positive integers.

In one possible implementation, the frequency domain resource index is contained in DCI.

In one possible implementation, the correspondence between the frequency domain resource index and the S and the L is contained in a frequency domain resource indication table, which is determined by the total number N of resource blocks RB included in a first bandwidth part BWP, the rbg_s, and the rbg_l, wherein the first BWP includes the first frequency domain resource.

In one possible design, the starting position and the length of the frequency domain resource corresponding to the ith row in the frequency domain resource indication table are respectively marked as S (i) and L (i), and the frequency domain resource index corresponding to the ith row is i;

the frequency domain resource indication table satisfies:

l (i+1) > L (i), or L (i+1) =l (i), S (i+1) > S (i); or alternatively, the process may be performed,

s (i+1) > S (i), or S (i+1) =s (i), L (i+1) > L (i);

i is a positive integer, S (i) is an integer greater than or equal to zero, and L (i) has a value ranging from 1 to

And said L (i) and said S (i) satisfy L (i) RBG_L+S (i) RBG_S.ltoreq.N, < >>

To round down the symbol.

In one possible implementation, the network device signals a frequency domain resource mapping table, which contains Z rows. Each row corresponds to a possible value of S and a possible value of L. If the frequency domain resource index is an integer greater than or equal to zero, then adding 1 to the frequency domain resource index represents what number of rows is chosen for S and L.

Z is the number of lines of the frequency domain resource mapping table, and the number of bits required for the frequency domain resource index in the implementation mode is log ₂ Z, the network device can design a frequency domain resource mapping table with a smaller line number according to the actual communication situation, so that the communication flexibility is ensured, the effect of reducing the DCI bit number can be achieved, and the reliability of data communication is improved.

In one possible design, the first frequency domain resource in the above design is a frequency domain resource corresponding to a first hop of the first data in the frequency hopping scenario, and the method further includes: the terminal equipment receives a first frequency domain offset value from the network equipment, wherein the first frequency domain offset value indicates the interval between the starting position S' of a second frequency domain resource and the S on a frequency domain, the second frequency domain resource is a frequency domain resource corresponding to the second hop of the first data, the granularity of the first frequency domain offset value is a third RBG, and the size of the third RBG is the RBG_S; and determining the second frequency domain resource according to the first frequency domain offset value.

In one possible implementation, the second frequency domain resource S' may be determined specifically by the following formula:

S’＝(S+RBG _offset ) mod N ', where S' has a granularity of a third RBG, and the third RBG has a size of RBG\uS, S; or alternatively, the process may be performed,

S’＝(S*RBG_S+RBG _offset * Rbg_s) mod n, where S' is granularity of RB.

By setting RBG _offset The granularity of (1) is RBG_S, so that the resource allocation of the base station is simpler, and the complexity of the resource allocation of the network equipment is reduced. The complexity of terminal calculation can also be reduced. When the size of the third RBG with the granularity of S' is RBG_S, the complexity of the base station low resource allocation and the terminal calculation can be further reduced; when the granularity of S' is RB, the second frequency domain position can be started from any RB, so that reasonable resource allocation is facilitated.

In one possible design, the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data in the frequency hopping scenario, and the method further includes: the terminal equipment receives a second frequency domain offset value from the network equipment, wherein the second frequency domain offset value indicates the interval between the starting position S' of the second frequency domain resource and the S on the frequency domain, the second frequency domain resource is the frequency domain resource corresponding to the second hop of the first data, the granularity of the second frequency domain offset value is a fourth RBG, and the size of the fourth RBG is RBG_L; the terminal equipment determines the second frequency domain resource according to the second frequency domain offset value, the RBG_S and the RBG_L.

S’＝(S*RBG_S+RBG _offset *RBG_L)modN；

S’＝(S*RBG+RB _offset ) mod N, where S' is granularity of RB.

N is the total number of RBs included in the first BWP, which includes the first frequency domain resource and the second frequency domain resource, or the first BWP is the BWP where the first data is located. RB (radio bearer) _offset I.e. the third frequency domain offset value. N' is

By using the mode of indicating the S and the L by the frequency domain resource index, the network equipment and the terminal equipment can ensure that the S and the L indicated by the frequency domain resource index are consistent in understanding, the number of bits required by the frequency domain resource index is small, and the system overhead can be effectively reduced. When it is included in the DCI to indicate, the number of bits of the DCI can be effectively reduced, thereby improving the reliability of the PDCCH.

In one possible design, the first frequency domain resource in the above design is a frequency domain resource corresponding to a first hop of the first data in the frequency hopping scenario, and the frequency domain resource corresponding to a second hop of the first data may be further determined according to the fourth aspect and the fifth aspect described below.

In a fourth aspect, embodiments of the present application provide a method of communication, including:

the network equipment sends a first frequency domain offset value to the terminal equipment, wherein the first frequency domain offset value indicates the number of RBGs of the interval between the starting position S' of the second frequency domain resource and the starting position S of the first frequency domain resource on the frequency domain;

the terminal equipment determines a starting position S' of the second frequency domain resource according to the first frequency domain offset value and the S; the first frequency domain resource and the second frequency domain resource are both located in a first BWP.

In one possible design, the first frequency domain resource and the second frequency domain resource are frequency domain resources occupied by uplink data of the terminal device in different time periods during frequency hopping.

In one possible design, the first frequency domain resource is a frequency domain resource corresponding to a first hop of the uplink data, and the second frequency domain resource is a frequency domain resource corresponding to a second hop of the uplink data.

In one possible design, the S' represents a starting RBG number of the second frequency-domain resource on the first BWP, and the S represents a starting RBG number of the first frequency-domain resource on the first BWP.

The granularity of the first frequency domain offset value is set to be RBG, so that the interval between two adjacent frequency hopping is an integer number of RBGs, and therefore, the frequency domain resources can be continuously allocated, and the waste of the frequency domain resources is avoided.

In one possible design, the method further comprises: the network device sends a resource indication value RIV to the terminal device, the RIV being used to indicate a starting position S and a length L of the first frequency domain resource. Specific indication means may refer to descriptions in the first aspect, the second aspect and the third aspect, and are not repeated.

In one possible design, the number of RBGs included in the first frequency domain resource is the same as the number of RBGs included in the second frequency domain resource. L 'is the length of the second frequency domain resource, then L' =l.

By setting the frequency domain resources of the two frequency hopping to be the same in length, two-hop resources can be indicated only by one resource indication domain, so that the signaling overhead is reduced, and the implementation complexity is reduced.

In one possible design, the end position of the second frequency domain resource is determined from a reference frequency domain resource:

the number of RBs included in the reference frequency domain resource is the same as that of RBs included in the first frequency domain resource, the starting position of the reference frequency domain resource is the same as that of a second frequency domain resource, and if the ending RB of the reference frequency domain resource is in the jth RBG, the ending RB of the second frequency domain resource is the ending RB of the jth RBG, wherein j is more than or equal to 2 and less than or equal to N2, and j and N2 are integers.

the number of RBs included in the reference frequency domain resource is the same as that of RBs included in the first frequency domain resource, the starting position of the reference frequency domain resource is the same as that of a second frequency domain resource, and if the ending RB of the reference frequency domain resource is in the jth RBG, the ending RB of the second frequency domain resource is the ending RB of the jth-1 RBG, wherein j is more than or equal to 3 and less than or equal to N2, and j and N2 are integers.

the number of RBs included in the reference frequency domain resource is the same as the number of RBs included in the first frequency domain resource, the starting position of the reference frequency domain resource is the same as the starting position of a second frequency domain resource, and if the ending RB of the reference frequency domain resource is the ending RB of the jth RBG, the ending RB of the second frequency domain resource is the ending RB of the jth RBG, wherein j is more than or equal to 2 and less than or equal to N2, and j and N2 are integers.

By adjusting the ending RB of the frequency domain resource of the second hop, the three designs ensure that RBG grids in the ending RB and the BWP are aligned, reasonably utilize the resource which cannot be used, ensure the reliability and improve the resource utilization rate.

In a fifth aspect, the present application provides a communication method, including:

the network equipment sends a second frequency domain offset value to the terminal equipment, wherein the second frequency domain offset value indicates the number of RBs of the interval between the starting position S' of the second frequency domain resource and the starting position S of the first frequency domain resource on the frequency domain;

the terminal equipment determines a starting position S' of the second frequency domain resource according to the second frequency domain offset value and the S; the first frequency domain resource and the second frequency domain resource are both located in a first BWP.

In one possible design, the first frequency domain resource corresponds to a first hop of the uplink data, and the second frequency domain resource is a frequency domain resource corresponding to a second hop of the uplink data.

In one possible design, the S' represents a starting RB number of the second frequency domain resource on the first BWP, and by setting the granularity of the second frequency domain offset value to be maintained as RB, the starting position of the second hop is more flexible, thereby avoiding resource waste.

In one possible design, the method further comprises: the network device sends a resource indication value RIV to the terminal device, the RIV being used to indicate a starting position S and a length L of the first frequency domain resource. Reference may be made to the descriptions in the first aspect and the second aspect, and in the third aspect, which are not repeated.

In one possible design, the network device sends first indication information to indicate the number P of RBs included in the first RBG, where the second frequency domain offset value is c×p, and C and P are positive integers. Such a design improves the utilization of resources. The optional first RBG is used for determining the number N2 of RBGs in the first BWP.

In one possible design, the network device sends first indication information, which indicates the number P of RBs included in the first RBG, where RBs included in the first bandwidth part BWP is divided into N2 RBGs, where the number a of RBs included in the first RBG of the N2 RBGs, the number B of the last RBG, and the number P of RBGs included in the remaining RBGs of the N2 RBGs;

The second frequency domain offset value is at least one of: A. b, C P and A+K P, A, B, C, K, P are positive integers.

The design ensures the utilization rate of resources to the maximum extent.

In a sixth aspect, the present application provides an apparatus, which may be a terminal device, or may be an apparatus (e.g. a chip) applied in a terminal device, where the apparatus may include a module for performing the method in the first aspect or any one of the possible designs, the method in the second aspect or any one of the possible designs, the method in the third aspect or any one of the possible designs, the method in the fourth aspect or any one of the possible designs, or performing the corresponding function of the terminal device in the method in the fifth aspect or any one of the possible designs.

In a seventh aspect, the present application provides an apparatus, which may be a network device, or may be an apparatus (e.g. a chip) applied in a network device, where the apparatus may include a module for performing a function corresponding to a network device in the method of any one of the first aspect and the first design, the method of any one of the second aspect or the second aspect, the method of any one of the third aspect and the third aspect, the method of any one of the fourth aspect and the fourth design, or the method of any one of the fifth aspect and the fifth design.

In an eighth aspect, an embodiment of the present application provides an apparatus, where the apparatus includes a processor, where the processor is configured to implement a function of a terminal device in any one of the possible designs in the first aspect or the first aspect, a function of a terminal device in any one of the possible designs in the second aspect or the second aspect, a function of a terminal device in any one of the possible designs in the third aspect or the third aspect, a function of a terminal device in any one of the possible designs in the fourth aspect, or a function of a terminal device in any one of the possible designs in the fifth aspect or the fifth aspect. The apparatus may also include a memory to store instructions and data. The memory is coupled to the processor, and the processor may implement the functions of the terminal device when executing the program instructions stored in the memory. The apparatus may also include a communication interface for the apparatus to communicate with other devices, which may be transceivers, circuits, buses, or other types of communication interfaces, network devices, etc., as examples.

In a ninth aspect, embodiments of the present application provide an apparatus, where the apparatus includes a processor, configured to implement a function of a network device in any one of the first aspect or the first aspect, a function of a network device in any one of the second aspect or the second aspect, a function of a network device in any one of the third aspect or the third aspect, a function of a network device in any one of the fourth aspect or the fourth aspect, or a function of a network device in any one of the fifth aspect or the fifth aspect. The apparatus may also include a memory to store instructions and data. The memory is coupled to the processor, which when executing the program instructions stored in the memory, can implement the functions of the network device described above. The apparatus may also include a communication interface for the apparatus to communicate with other devices, which may be transceivers, circuits, buses, or other types of communication interfaces, as examples, terminal devices, etc.

In a tenth aspect, embodiments of the present application further provide a computer readable storage medium, where an instruction is stored, where the instruction may implement a function of a terminal device or a network device in any one of the possible designs of the first aspect, may implement a function of a terminal device or a network device in any one of the possible designs of the second aspect, may implement a function of a terminal device or a network device in any one of the possible designs of the third aspect, may implement a function of a terminal device or a network device in any one of the possible designs of the fourth aspect, or may implement a function of a terminal device or a network device in any one of the possible designs of the fifth aspect.

In an eleventh aspect, the embodiments of the present application further provide a chip system, where the chip system includes a processor and a memory, where the chip system is configured to implement a function of a terminal device or a network device in any one of the possible designs in the first aspect, a function of a terminal device or a network device in any one of the possible designs in the second aspect, a function of a terminal device or a network device in any one of the possible designs in the third aspect, a function of a terminal device or a network device in any one of the possible designs in the fourth aspect, or a function of a terminal device or a network device in any one of the possible designs in the fifth aspect. The chip system may be formed of a chip or may include a chip and other discrete devices.

In a twelfth aspect, embodiments of the present application further provide a computer program product, which includes instructions that, when executed, can implement the functionality of a terminal device or a network device in any one of the possible designs of the first aspect, the functionality of a terminal device or a network device in any one of the possible designs of the second aspect, the functionality of a terminal device or a network device in any one of the possible designs of the third aspect, the functionality of a terminal device or a network device in any one of the possible designs of the fourth aspect, or the functionality of a terminal device or a network device in any one of the possible designs of the fifth aspect.

In a thirteenth aspect, embodiments of the present application further provide a communication system, including an apparatus of the sixth aspect and an apparatus of the seventh aspect. Or comprises the apparatus of the eighth aspect and the apparatus of the ninth aspect.

In addition, the technical effects of any one of the possible designs in the sixth aspect to the thirteenth aspect may be referred to as technical effects of different designs in the method section, and will not be described herein.

Drawings

Fig. 1 is a schematic diagram of a communication scenario in an embodiment of the present application;

fig. 2 is a schematic diagram of a relationship between a bandwidth portion and a carrier bandwidth according to an embodiment of the present application;

fig. 3 is a schematic diagram of a frequency domain resource according to an embodiment of the present application;

fig. 4 is a flow chart illustrating a frequency domain resource indication method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a frequency domain resource indication according to an embodiment of the present application;

fig. 6 is a flowchart of another frequency domain resource indication method according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a method for frequency hopping indication according to an embodiment of the present application;

fig. 8 is a schematic diagram of frequency domain resources occupied in a frequency hopping scenario according to an embodiment of the present application;

fig. 9 is a schematic diagram of frequency domain resources occupied in yet another frequency hopping scenario according to an embodiment of the present application;

fig. 10 is a flowchart of a method for frequency hopping indication according to an embodiment of the present application;

FIG. 11 is a schematic structural view of an apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural view of yet another device according to an embodiment of the present application.

Detailed Description

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one (item) below" or the like, refers to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein each of a, b, c may itself be an element, or may be a collection comprising one or more elements.

In the embodiments of the present application, "exemplary," "in some embodiments," "in another embodiment," etc. are used to indicate by way of example, illustration, or description. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

"of" and "corresponding" in the embodiments of the present application may sometimes be used in combination, and it should be noted that the meaning of the expression is consistent when the distinction is not emphasized. Communication, transmission may sometimes be mixed in embodiments of the present application, it should be noted that the meaning expressed is consistent with the de-emphasis. For example, a transmission may include sending and/or receiving, either nouns or verbs.

It should be noted that the terms "first," "second," and the like in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance or order. .

In the embodiments of the present application,

representing rounding down to X. And unless otherwise specified, rounding operations in this application may be considered as examples, without excluding other rounding modes, and rounding modes may include rounding down, rounding up, rounding down, or the like. Amod B represents the remainder of dividing a by B.

The present application may be located in a communication scenario as shown in fig. 1. As shown in fig. 1, the terminal devices 1-6 may access a wireless network through a network device and implement uplink and/or downlink communication with the network device. Wherein the wireless network includes, but is not limited to: a long term evolution (long term evolution, LTE) system, a New Radio (NR) system in a fifth generation (5 g) mobile communication system, a future mobile communication system, and the like.

Some of the terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

1. And a terminal device. In this embodiment of the present application, the terminal device is a device with a wireless transceiver function, and may be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), a vehicle-mounted terminal device, a remote station, a remote terminal device, and so on. The specific mode of the terminal device may be a mobile phone, a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wearable tablet (pad), a desktop, a notebook, an all-in-one, a vehicle terminal, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), etc. The terminal device can be applied to the following scenarios: virtual Reality (VR), augmented reality (augmented reality, AR), industrial control (industrial control), unmanned (self driving), tele-surgery (remote medical surgery), smart grid (smart grid), transportation safety (transportation safety), smart city (smart home), smart home (smart home), etc. The terminal device may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as LTE, NR, wideband code division multiple access (wideband code division multiple access, WCDMA), etc.

2. A network device. The network device in the embodiment of the present application is a device that provides a wireless communication function for a terminal device, and may also be referred to as a radio access network (radio access network, RAN) device or the like. Network devices include, but are not limited to: a next generation base station (next generation nodeB, gNB), evolved node B (eNB), baseband unit (BBU), transmit-receive point (transmitting and receiving point, TRP), transmit point (transmitting point, TP), relay station, access point, and the like in 5G. The network devices may also be wireless controllers, centralized Units (CUs), distributed Units (DUs), etc. in the context of a cloud wireless access network (cloud radio access network, CRAN). Wherein the network device may support at least one wireless communication technology, such as LTE, NR, WCDMA, etc.

3. Communication between a terminal device and a network device. In the embodiment of the present application, the terminal device and the network device communicate through a radio interface (radio interface).

4. And (5) uplink communication. In this embodiment of the present application, uplink communication may be referred to as uplink transmission, which refers to a process in which in communication between a terminal device and a network device, the terminal device sends a signal to the network device. The signal sent by the terminal device to the network device may be referred to as an uplink signal or uplink information. The uplink signal includes uplink control information (uplink control information, UCI) and uplink data, for example. The uplink control information is used to carry relevant information fed back by the terminal device, such as channel state information (channel state information, CSI), acknowledgement (ACK)/negative acknowledgement (negative acknowledge, NACK), and the like. Specifically, the uplink control information may be carried on a physical uplink control channel (physical uplink control channel, PUCCH) or on a physical uplink shared channel (physical upnlink shared channel, PUSCH); uplink data may be carried on PUSCH.

5. And (5) downlink communication. In this embodiment of the present application, the downlink communication may also be referred to as downlink transmission, which refers to a process in which, in communication between a terminal device and a network device, the terminal device receives a signal sent by the network device. The signal sent by the terminal device to receive the network device may be referred to as a downlink signal or downlink information. For example, the downlink signal may include DCI and downlink data (downlink data). The downlink control information is information related to downlink data scheduling, such as resource allocation of a data channel and modulation and coding scheme. Specifically, the DCI may be carried on a PDCCH, and the downlink data may be carried on a physical downlink shared channel (physical downlink shared channel, PDSCH).

The communication of upstream data and/or the communication of downstream data may also be referred to as data communication.

6. Carrier bandwidth portion. The carrier bandwidth portion in this embodiment of the present application may be simply referred to as a bandwidth portion (BWP), which refers to a continuous or discontinuous band of frequency domain resources on a carrier, where the bandwidth of the continuous or discontinuous band of frequency domain resources does not exceed the bandwidth capability of the terminal device, i.e. the bandwidth of the BWP is less than or equal to the maximum bandwidth supported by the terminal device. Taking BWP as an example of a segment of contiguous frequency domain resource on the carrier, BWP may be a set of contiguous Resource Blocks (RBs) on the carrier, BWP may be a set of contiguous subcarriers on the carrier, BWP may be a set of contiguous resource block sets (resource block group, RBGs) on the carrier, or the like. Wherein one RBG includes at least one RB, for example, 1, 2, 4, 8, or 16, etc., and one RB may include at least one subcarrier, for example, 12, etc.

The BWP used in the embodiments of the present application for the terminal device to communicate with the network device may be configured by the network device,may also be predefined by a protocol, which may be the third generation partnership project (the 3 ^rd generation partnership project,3 GPP). For one terminal device, the network device may configure the terminal device with one or more BWP within one carrier. For example, as shown in fig. 2 (a), the network device configures one BWP within one carrier for the terminal device. Wherein the bandwidth of BWP does not exceed the bandwidth capability of the terminal device and the bandwidth of BWP is not larger than the carrier bandwidth. As another example, as shown in fig. 2 (b), the network device configures two BWP, BWP1 and BWP2, respectively, for the terminal device within one carrier, wherein the BWP1 and BWP2 overlap. As another example, as shown in fig. 2 (c), the network device configures two BWP, BWP1 and BWP2, respectively, for the terminal device within one carrier, wherein BWP1 and BWP2 do not overlap at all. It should be noted that, in the embodiment of the present application, the number of BWP configured by the network device for the terminal device is not limited. For example, the network device may configure up to 4 BWP for the terminal device. As another example, in the context of frequency division duplexing (frequency division duplexing, FDD), the network device may configure 4 BWP for uplink and downlink communications of the terminal device, respectively. As another example, in the scenario of time division duplexing (time division duplexing, TDD), the network device may configure 4 BWP for uplink and downlink communications of the terminal device, respectively.

Furthermore, the network device may configure the system parameters for the terminal device for each BWP. In this embodiment of the present application, system parameters corresponding to different BWP may be the same or different. Taking (b) in fig. 2 as an example, the system parameters corresponding to BWP1 and the system parameters corresponding to BWP2 may be the same or different.

8. Time slots (slots). Slot in the embodiments of the present application may be understood as a period of time in the time domain. The duration of one slot may be related to the size of the subcarrier spacing, and the durations of slots corresponding to subcarrier spacing of different sizes may be different. For example, when the subcarrier spacing is 15kHz, the duration of one slot may be 1 millisecond (ms); the duration of one slot may be 0.5ms when the subcarrier spacing is 30 kHz. For example, a slot in embodiments of the present application may include one or more symbols. For example, under a normal (normal) Cyclic Prefix (CP), one slot may include 14 symbols; under extended (extended) CP, one slot may include 12 symbols.

9. Size of RBG (RBG size). In this embodiment of the present application, the size of an RBG may refer to the number of RBs included in one RBG, which is a unit for measuring the size of a frequency domain resource occupied by uplink data or downlink data. For example, one RBG includes 4 RBs, and it can be understood that the RBG has a size of 4 RBs. That is, the frequency domain resources are allocated in units of 4 RBs, and the number of RBs included in the frequency domain resources occupied by the uplink data channel or the downlink data channel is an integer multiple of 4.

Regarding the manner of indicating the frequency domain resources, one possible method is: the network device indicates a segment of frequency domain resources by transmitting a resource indication value (resource indicator value, RIV) bearer in the DCI to the terminal device. The frequency domain resources used by the uplink data or the downlink data at least comprise the frequency domain resources, or the frequency domain resources used by the data channel carrying the uplink data or the downlink data at least comprise the frequency domain resources. As mentioned above, the data channel may be PDSCH or PUSCH, which respectively carries downlink data and uplink data. The value of the RIV is related to the starting position S of the frequency domain resource and the length L of the frequency domain resource. Specifically, it can be calculated by the following formula (1):

when (when)

Riv=n (L _RBs -1)+B _start ；

When (when)

When riv=n (N-L _RBs +1)+(N-1-B _start ) Formula (1)

Wherein N is the number of RBs included in BWP, and N is a positive integer. When the granularity of S is RB, RB _start Namely S, the number of the resource block RB indicating the frequency domain starting position, RB _start Is an integer of 0 or more. L (L) _RBs I.e., L, represents the number of frequency domain consecutive RBs. L is more than or equal to 1 _RBs ≤N-RB _start And L is an integer. In the present application, the BWP may be an uplink BWP or a downlink BWP, unless otherwise specified.

The terminal equipment obtains S and L through RIV sent by the network equipment, and the frequency domain resource can be uniquely determined through S and L.

For example, assuming n=10, rb _start ＝0，L _RBs =5, then riv=40 according to the above formula (1). The riv=40 carried by the network device in the DCI, where the terminal device may obtain, according to the riv=40, that the starting position S is RB0, and the length is 5 RBs, that is, RBs 0 to RB4 shown in fig. 3 are frequency domain resources to be indicated.

By adopting the indication method of the frequency domain resource, the bit number required by RIV is

When N is large, the number of bits required by the RIV becomes large, so that the reliability of data communication, particularly in an ultra-reliable and low-latency communication (URLLC) scenario, cannot be well ensured. For this purpose, the above method can be optimized to obtain the second frequency domain resource indication mode by changing the granularity of S and L. Where granularity refers to a unit of data, which will be explained in detail in the examples of the application below. The granularity of S and L in the above method can be changed from RB to resource block group (resource block group, RBG). S may represent RBG numbers of the frequency domain resource start position, and L represents the number of consecutive RBGs in the frequency domain. The RIV can be derived by the following formula (2):

Is provided with

If it is

Riv=n1 (L-1) +s;

otherwise, riv=n1 (n1—l+1) + (N1-S-1) formula (2)

Wherein L is an integer not less than 1, S is an integer not less than 0, and L+S is not more than N1,

representing a rounding down.

Since n1=n/RBG siz, formula (2) effectively reduces the number of bits required for RIV relative to formula (1), i.e., the number of bits of the frequency domain resource indication field in DCI is reduced, so that the reliability of DCI can be improved.

However, in the second frequency domain resource indication mode, the granularity of L and S is consistent, taking the example that RBG size is 4 RBs, that is, resources can only be allocated with granularity of 4 RBs: the RB number of the start position S can be only an integer multiple of 4 (e.g., RB0, RB4, or RB 8); the length of the L indication can only be an integer multiple of 4 RBs. At this time, assuming that N is not an integer multiple of 4, some RBs may not be allocated all the time, and resource waste occurs. For example, assuming that the downlink BWP is 10 RBs, RB0 to RB9, respectively, only RB0 to RB7 may be allocated, and RB8 and RB9 may never be used.

Based on the above problem, the second frequency domain resource indication mode can be optimized by configuring the granularity of S and L respectively to obtain the third frequency domain resource indication mode, so as to improve the reasonable utilization rate of resources. Since the granularity of S and L may be different, herein, the RBG size corresponding to the granularity of S is denoted as rbg_s, and the RBG size corresponding to the granularity of L is denoted as rbg_l, the calculation manner of RIV may be divided into the following two cases: case one:

And a second case:

n2=n/rbg_s. The values of N in these two cases are different, but the following formula (3) may be used:

if it is

Riv=n2 (L-1) +s;

otherwise, riv=n2 (n2-l+1) + (N2-S-1) formula (3)

Wherein, each parameter also needs to satisfy: l rbg_l+s rbg_s is equal to or less than N.

The number of bits required for RIV in equation (3) is

In this way, the problem that some RBs cannot be allocated can be effectively solved, but new problems still occur.

For example, in case one, assuming that N is 8 RBs, rbg_l=2 RBs, rbg_s=1 RB, the correspondence between the obtained RIV and S and L is shown in table 1:

TABLE 1

L\S	0	1	2	3	4	5	6
								1	0	1	2	3	4	5	6
2	4	5	6	7	8
								3	8	9	10
4	7

Since the value of S ranges from 0 to

L is in the range of 0 to

Is an integer of (a). The first row represents the optional values of S from 0 to 6 and the first column represents the optional values of L from 1 to 4. Since L rbg_l+s rbg_s is also required to satisfy N, the combination of S and L that does not satisfy the requirement (i.e., the combination of S and L for which the RIV value is not filled in table 1) is further removed. It should be noted that, the tables 2 to 5 are drawn by a method similar to that of table 1, so the related parts will not be repeated.

It can be seen that there are many repetitions of the value of RIV, e.g., s=4, l=1, RIV is 4; s=0, l=2, or the RIV is equal to 4, that is, the RIV is not in one-to-one correspondence with S and L, which results in ambiguity of the indication of the frequency domain resource, and the network device and the terminal device may interpret the RIV differently, when the network device indicates riv=4 to the terminal device, the terminal device cannot determine whether s=4, l=1, or s=0, l=2 is indicated at this time. When the frequency domain resource determined by the terminal device is inconsistent with the frequency domain resource actually indicated by the network device side, the subsequent data communication will fail.

Also for example for case two: assuming that N is 8 RBs, rbg_l=2 RBs, rbg_s=1 RB, the resulting correspondence of RIV to S and L is shown in table 2,

TABLE 2

L\S	0	1	2	3	4	5	6
								1	0	1	2	3	4	5	6
2	8	9	10	11	12
								3	16	17	18
4	47

Although it can be seen in table 2 that the value of RIV is one-to-one corresponding to S and L, the maximum value of the frequency domain resource indication value RIV is 47, and if this 47 is to be indicated, 6 bits are required. However, even if the first frequency domain resource indication mode is returned, that is, the RIV value is calculated by adopting the formula (1), under the condition of the same N, the number of bits required by the obtained RIV is only 5 bits, the number of bits is not reduced, the number of bits is increased, and the reliability of the DCI cannot be ensured.

Therefore, a new frequency domain resource indication mode is needed, so that not only can the RIV be in one-to-one correspondence with the S and the L, but also the bit number of the RIV can be effectively reduced.

Example 1

The embodiment of the application provides a frequency domain resource indication method which can be applied to a communication scene shown in fig. 1. The method can effectively reduce the bit number of RIV and improve the reliability of data communication. As shown in fig. 4, the method may include:

s401, the network equipment sends RIV to the terminal equipment, wherein the RIV is used for indicating the starting position S and the length L of first frequency domain resources, and the first frequency domain resources are part or all of frequency domain resources used by first data; the granularity of S is a first RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, and the size of the second RBG is RBG_L. Wherein S and RIV are integers greater than or equal to zero, and L, RBG_S and RBG_L are positive integers.

Correspondingly, the terminal device receives the RIV from the network device.

S402, the terminal equipment determines the first frequency domain resource according to the RIV.

S403, the terminal equipment sends the first data to the network equipment on the first frequency domain resource or receives the first data from the network equipment on the first frequency domain resource.

The first data sent by the terminal equipment to the network equipment is uplink data; the first data received by the terminal device from the network device is downlink data. They are understood to be data interacted with by the terminal device and the network device. The first data may be carried on PDSCH or on PUSCH. It is understood that the specific manner of S403 is known to those skilled in the art, and thus will not be described in detail herein.

When the embodiment of the application is not applied to the frequency hopping scene, the first frequency domain resource is all frequency domain resources used by the first data. When the embodiment of the application is applied to a frequency hopping scene or a scene in which first data is repeatedly transmitted, the first frequency domain resource is a part of frequency domain resources used by the first data. The detailed description of frequency hopping will be described in detail later in this application in connection with specific technical schemes, which are incorporated herein by reference.

The physical meaning of RIV is similar to that described above. The relationship between RIV and S and L can be determined by designing a new formula and allowing the RIV to achieve the advantageous effects as described above.

The granularity of S mentioned in S401, consistent with the concepts mentioned previously, can be understood as units of S. Further, the granularity of S is the first RBG, which may be understood as that the data unit of S is the first RBG, that is, the value of S herein may be an RBG number in a certain frequency domain range. For example, the size rbg_s of the first RBG is 4 RBs, and when s=1, the first RBG number representing the starting position of the first frequency domain resource is 1, and the corresponding RB number is 4; when s=2, the second RBG number representing the starting position of the first frequency domain resource is 2 and the corresponding RB number is 8. The granularity of L, i.e. the data unit of L, can be understood in the same way. The granularity of L is the second RBG, which can be understood as the data unit of L is the second RBG. For example, the size rbg_l of the second RBG is 8 RBs, and when l=1, it represents that the first frequency domain resource has a length of 1 second RBG, that is, 8 RBs; when l=2, it represents that the length of the first frequency domain resource is 2 second RBGs, that is, 16 RBs.

When granularity of S and L is RBG, S may represent RBG number of a frequency domain resource start position, and S may be also referred to as RBG _start The method comprises the steps of carrying out a first treatment on the surface of the L represents the number of RBGs in succession in the frequency domain, and can also be denoted as L _RBGs 。

It should be noted that rbg_s and/or rbg_l may be determined according to the number of RBs included in the BWP where the first data is located. The rbg_s and rbg_l may be transmitted to the terminal device by the network device through the first indication information and the second indication information in the higher layer signaling, respectively. The first indication information and the second indication information may be located in the same high-layer signaling or may be located in different high-layer signaling. In various embodiments of the present application, the higher layer signaling may specifically be medium access control (mediumaccess control, MAC) signaling, or radio resource control (radio access control, RRC) signaling, etc. The RBGs and/or RBGs L may also be made aware of the end device in a manner predefined using the protocol instead.

Further, in S401, the value of RIV may be related to rbg_s and/or rbg_l. This feature is specifically described in connection with S401 by following specific implementation 1.1 to implementation 1.3:

first, in the following implementations 1.1 to 1.3:

N is the total number of RBs included in the first BWP, which includes the frequency domain resources used by the first data, because the first frequency domain resources are part or all of the frequency domain resources used by the first data, i.e., the first BWP includes the first frequency domain resources. Or the first BWP is the BWP where the first data is located, that is, the uplink BWP or the downlink BWP as described above. The value of L ranges from 1 to

And L and S satisfy L.times.RBG_L+S.times.RBG_S.ltoreq.N.

It should be noted that, to make L and S satisfy l×rbg_l+s×rbg_s be less than N, it is to ensure that the first frequency domain resource determined in this way is located in the first BWP. Based on the physical meaning of S, the above range of values of L, and the inequality, at least the following limitations can also be made for S: the value range of S is

Implementation 1.1: RIV is calculated by the following equation (4):

when L is equal to 1, RIV is equal to S;

when the value of L is greater than 1,

wherein ,

i is an integer, and i is more than or equal to 2 and less than or equal to L.

Further, a specific example is given. Assuming n=8, rbg_s=1 RB, rbg_l=2 RBs, the correspondence of RIV to S and L can be obtained according to formula (4), as shown in table 3 below:

TABLE 3 Table 3

L\S	0	1	2	3	4	5	6
								1	0	1	2	3	4	5	6
2	7	8	9	10	11
								3	12	13	14
4	15

It can be seen from table 3 that all RIVs are consecutive in the integer range, i.e., all integers in the minimum and maximum ranges of RIVs (including the minimum and maximum values of RIVs) find S and L corresponding thereto. While the minimum value of RIV is 0. The number of bits required for RIV at this time is

The number of effective combinations of S and L satisfies all possible combinations of S and L of L rbg_l+s rbg_s.ltoreq.n. At this time, the number of bits required for RIV is

Less than the number of bits 6 calculated using equation (1). This advantage is more pronounced when N is larger. Since the number of bits required for RIV is reduced, the reliability of DCI is ensured to be high. At the same time, as can be found from Table 3, the present implementation mode is adoptedRIV, S and L are in one-to-one correspondence, so that the frequency domain resource determined by the terminal equipment is consistent with the frequency domain resource actually indicated by the network equipment side, and the failure of subsequent data communication is avoided.

Alternatively, the correspondence between RIV and S and L in this implementation may be expressed from another angle. For example, a pseudo code representation executed by a computer shows the relationship between RIV and S and L:

implementation 1.2: RIV is calculated by the following equation (5):

when (when)

When riv=n_s (L-1) +s;

when (when)

When riv=n_s (n_l-l+1) + (n_s-S-1); formula (5)

Further, a specific example is given.

Assuming n=10, rbg_s=1 RB, rbg_l=2 RBs, the correspondence of RIV to S and L can be obtained according to equation (5), as shown in table 4 below:

TABLE 4 Table 4

L\S	0	1	2	3	4	5	6	7	8
										1	0	1	2	3	4	5	6	7	8
2	9	10	11	12	13	14	15
										3	18	19	20	21	22
4	26	25	24
										5	17

As can be seen from Table 4, at this time, the RIV value corresponds to S and L one by one, so that the frequency domain resource determined by the terminal device is consistent with the frequency domain resource actually indicated by the network device side, thereby avoiding the failure of subsequent data communication. At this time, the value of RIV ranges from 0 to 26, and thus the number of bits described by the corresponding RIV is 5 bits. In this case, if the number of bits required for the RIV obtained by the formula (1) is 6 bits, the number of bits required for the RIV indication is reduced, and the reliability of the data communication is further improved. Meanwhile, as can be found through table 4, by adopting the implementation manner, RIV, S and L are in one-to-one correspondence, so that the frequency domain resource determined by the terminal equipment is consistent with the frequency domain resource actually indicated by the network equipment side, and the failure of subsequent data communication is avoided.

Implementation 1.3: RIV is calculated by the following equation (6):

is provided with

When (when)

When riv=n_l (L-1) +s+offset1;

when (when)

When riv=n_l, (n_l-l+1) + (n_l-S-1) +offset2; formula (6)

The offset1 and the offset2 are offset values, so as to avoid that RIVs and S and L do not correspond to each other, for example, when the foregoing formula (3) is used for frequency domain resource indication, that is, avoid that the network device and the terminal device may interpret the frequency domain resource indication value RIV differently, which may cause failure of subsequent data communication.

Optionally, the values of the offset1 and the offset2 may be the same or different, and may be sent by the network device to the terminal device through third indication information and fourth indication information in the higher layer signaling. The third indication information and the fourth indication information may be located in the same high layer signaling or may be located in different high layer signaling. Of course, at least one of the offset1 and the offset2 could also be made known to the terminal device instead using a predefined manner of protocol.

If the offset1 and the offset2 are predefined so that the terminal knows, in one implementation, the offset 1=offset 2= (n_l-n_s) × (L-1) may be predefined. The values of offset1 and offset2 are brought into equation (6), where equation (6) in this implementation is further converted into (7):

When (when)

When riv=n_l (L-1) +s+ (n_l-n_s) ×l-1

When (when)

When riv=n_l (n_l-l+1) + (n_l-S-1) + (n_l-n_s) × (L-1) formula (7)

A specific example is given here.

Assuming n=8, rbg_s=1 RB, rbg_l=2 RBs, the correspondence of RIV to S and L can be obtained according to formula (7), as shown in table 5 below:

TABLE 5

L\S	0	1	2	3	4	5	6
								1	0	1	2	3	4	5	6
2	9	10	11	12	13
								3	18	19	20
4	22

As can be seen from Table 5, at this time, the RIV value corresponds to S and L one by one, so that the frequency domain resource determined by the terminal device is consistent with the frequency domain resource actually indicated by the network device side, thereby avoiding the failure of subsequent data communication. At the same time the number of bits required for the RIV is relatively small, and similar benefits to the above embodiments can be obtained.

It should be noted that granularity of S and L may be flexibly configured so that rbg_s and rbg_l are different or the same. In particular, in order to reduce implementation complexity of the terminal device, more reasonable utilization of resources may further make rbg_s and rbg_l identical. At this time, the granularity of S and L may be collectively denoted as P, that is, rbg_s=rbg_l=p. P is a positive integer.

On this basis, there is the following implementation 1.4:

the method is obtained by the following formula (8):

if it is

Riv=n2 (L-1) +s;

otherwise, riv=n2 (n2-l+1) + (N2-S-1) formula (8)

Wherein N2 represents the number of RBGs divided by P in the first BWP, and N2 can be also denoted as N _RBG . L represents the number of consecutive RBGs in the frequency domain, so l=1, …, N _RBG . S may represent RBG numbers of the frequency domain resource start position, so s=0, 1, …, N _RBG -1。L+S≤N2，

Representing a rounding down.

The following describes the manner in which N2 is calculated: n2 is determined according to the total number of RBs N included in the first BWP and P:

wherein, among the N2 RBGs of the first BWP, the first RBG has the size of

The last RBG has a size of

If (N+N) mod P>0, then->

Otherwise, go (L)>

The other RBGs in the first BWP have a size P.

It should be noted that, in the above calculation manner, the first BWP includes at most three RBG sizes, and in this embodiment of the present application, the sizes of RBGs other than the first RBG size and the last RBG size may be defined as granularity of S and L on the first BWP, that is, P values indicated by the network device through the indication information are defined as granularity of S and L.

For example, as shown in fig. 5, the number of RBs included in the first BWP is 11 RBs, and if p=4 RBs, n2=4 may be determined. I.e., 4 RBGs in the BWP, wherein the first RBG has a size of 1 RB, the last (fourth) RBG has a size of 2 RBs, and the middle 2 RBGs (second RBG and second RBG) have a size of 4 RBs. Further, if s=0 and l=2 of the frequency domain resource are indicated by the RIV, i.e., the first frequency domain resource starts from the 1 st RBG, the length is 2 RBGs, i.e., the gray part of the figure shows.

By implementation 1.4, the number of bits of the frequency domain resource indication field is required from equation (1)

The bit is reduced to +.>

Bits. N2 is smaller than N, so that the cost of control signaling is saved, and the reliability of communication is ensured.

Through the above implementation manners 1.1 to 1.4, in S402, the terminal device may determine S and L of the first frequency domain resource by receiving the RIV sent from the network device, and further determine the first frequency domain resource according to S and L. It should be noted that, the manner of estimating S and L by the terminal device according to the RIV in combination with any of the above formulas is similar to the manner of estimating S and L according to the RIV in the prior art and in combination with the formula (1), and those skilled in the art are familiar and known, so that the disclosure of the present application is omitted.

Example two

The above embodiment maintains the RIV indications S and L, but solves the deficiencies in the prior art by using a new RIV to S and L relationship formula. . The embodiment of the application also provides a new method for indicating the frequency domain resources of S and L, which can be applied to the communication scene shown in fig. 1. The method can also effectively reduce the bit number of DCI and improve the reliability of data communication. As shown in fig. 6, the method may include:

s501, the network equipment sends a frequency domain resource index to the terminal equipment, wherein the frequency domain resource index is used for indicating a starting position S and a length L of a first frequency domain resource, and the first frequency domain resource is part or all of frequency domain resources used by first data; the granularity of S is a first resource block group RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, and the size of the second RBG is RBG_L; and S is an integer greater than or equal to zero, and L, RBG_S and RBG_L are positive integers.

Correspondingly, the terminal device receives the frequency domain resource index from the network device.

S502, the terminal equipment determines the first frequency domain resource according to the frequency domain resource index.

S503, the terminal device sends the first data to the network device on a first frequency domain resource or receives the first data from the network device on the first frequency domain resource. The specific implementation of S503 may refer to S403 in the first embodiment, which is not described herein.

The definition of the first data, the first frequency domain resource, the granularity of S being the first RBG and the granularity of L being the second RBG may be referred to as the expression in the first embodiment. The manner in which the terminal device obtains the rbg_s and/or the rbg_l may also refer to the description of the relevant part in embodiment one, so that a detailed description is omitted.

In this embodiment, the network device indicates S and L of the first frequency domain resource by sending a frequency domain resource index to the terminal device. The relation between the frequency domain resource index and S and L is contained in a frequency domain resource mapping table. Each row in the frequency domain resource mapping table may indicate a value of S and a value of L, and the frequency domain resource index may point to a certain row in the frequency domain resource mapping table. And the terminal equipment can acquire the S and the L of the first frequency domain resource by combining the frequency domain resource mapping table according to the frequency domain resource index sent by the network equipment. The frequency domain resource index may be included in DCI for transmission by a network device to a terminal device.

The manner in which the terminal device obtains the frequency domain resource index may include the following two implementations. In the following implementation 2.1, i is a positive integer, and the value of L (i) ranges from 1 to

And L (i) and S (i) satisfy L (i) RBG_L+S (i) RBG_S.ltoreq.N. Optionally, further defining S (i): the value of S (i) ranges from 0 to +.>

Implementation 2.1:

the frequency domain resource mapping table is predefined. I.e. the frequency domain resource mapping table can be predefined in the protocol, the terminal device can learn.

Alternatively, each row of the frequency domain resource table may be arranged in the order from top to bottom, and when the L values of two adjacent rows are unchanged, all possible S values are arranged in the order from bottom to top. That is, the starting position and the length of the frequency domain resource corresponding to the i-th row in the frequency domain resource indication table are respectively marked as S (i) and L (i), and the frequency domain resource index corresponding to the i-th row is marked as i;

the frequency domain resource indication table satisfies:

l (i+1) > L (i); or alternatively

When L (i+1) =l (i), S (i+1) > S (i)

Further, a specific example is given.

Let n=8, rbg_s=1 RB, rbg_l=2 RBs, the frequency domain resource table thus designed is shown in table 6.

TABLE 6

Alternatively, there may be no column of frequency domain resource indices in the table 6, where the frequency domain resource indices are numbered sequentially from top to bottom, starting with the first row of the table.

Alternatively, each row of the frequency domain resource table may be arranged in a descending order of all possible S values from top to bottom, and when the S values are unchanged, all possible L values are arranged in a descending order. That is, the starting position and the length of the frequency domain resource corresponding to the i-th row in the frequency domain resource indication table are respectively marked as S (i) and L (i), and the frequency domain resource index corresponding to the i-th row is marked as i;

the frequency domain resource indication table satisfies:

s (i+1) > S (i); or alternatively

When S (i+1) =s (i), L (i+1) > L (i)

Further, a specific example is given.

Let n=8, rbg_s=1 RB, rbg_l=2 RBs, the frequency domain resource table thus designed is shown in table 7.

TABLE 7

Alternatively, there may be no column of frequency domain resource indices in the table 7, where the frequency domain resource indices are numbered sequentially from top to bottom, starting with the first row of the table.

As can be seen from tables 6 and 7, the frequency domain resource indexes of the present embodiment are in one-to-one correspondence with S and L, and thus the understanding of S and L indicated by the frequency domain resource indexes by the network device and the terminal device is consistent. Meanwhile, the number of bits required for the frequency domain resource index is

The effective combination of S and L is a combination of all possible S and L combinations that satisfies l×rbg_l+s×rbg_s+.n, and the number of bits required is the same as that of the first embodiment, so that similar advantageous effects can be achieved.

Implementation 2.2:

the frequency domain resource mapping table is indicated to the terminal equipment by the network equipment through signaling, and specifically can be indicated to the terminal equipment through high-layer signaling. Compared with the first implementation manner of the present embodiment, the network device may determine S and L in the frequency domain resource mapping table according to the real-time communication situation, which is more flexible.

For example, the frequency domain resource mapping table indicated by the network device through signaling includes Z rows. Each row corresponds to a possible value of S and a possible value of L. If the frequency domain resource index is an integer greater than or equal to zero, then adding 1 to the frequency domain resource index represents what number of rows is chosen for S and L. The frequency domain resource mapping table at this time may be as shown in table 8.

TABLE 8

Z is the number of lines of the frequency domain resource mapping table, and the number of bits required by the frequency domain resource index in the second implementation mode is log ₂ Z, the network device can design a frequency domain resource mapping table with a smaller line number according to the actual communication situation, so that the communication flexibility is ensured, the effect of reducing the DCI bit number can be achieved, and the reliability of data communication is improved.

Through the above various implementation manners, in S502, the terminal device may obtain S and L of the first frequency domain resource by receiving the frequency domain resource index sent from the network device and looking up a table, and further determine the first frequency domain resource according to S and L.

It should be noted that, in the second embodiment, the frequency domain resource mapping table is only one implementation manner. The method is not limited to a table, but may be a collection method or a list method.

When the channel condition corresponding to a certain section of frequency domain resource is not good, if all data are scheduled to be transmitted and received on the frequency domain resource, the probability of data communication errors is greatly increased. Therefore, in the prior art, the resources supporting the data communication are scattered in the frequency domain, so that the influence of a certain section of frequency domain resources with poor channel conditions on the whole data communication is effectively reduced. That is, the frequency domain diversity gain can be obtained as described above. One specific implementation of obtaining the frequency domain diversity gain is frequency hopping. For example, if there is no frequency hopping, the frequency domain resources originally used for data communication in a certain period of time are RB0 to RB7, 8 RBs in total; if frequency hopping techniques are employed, the time period can be divided into two time periods that are temporally adjacent: time period one and time period two, in which time period one is RB0 to RB7, and frequency domain resources for data communication in time period two become RB80 to RB87, thereby obtaining frequency domain diversity gain. In this application, RBn denotes an RB with index n, e.g., RB0, RB7, RB80 and RB87 here denote RBs with indices 0, 7, 80 and 87, respectively.

Further, for the frequency hopping of the uplink communication, the frequency hopping specifically includes intra-slot frequency hopping and inter-slot frequency hopping.

1. slot inner frequency hopping:

for data transmission within one slot, only two hops are supported. The length of the time domain resource indicated in the DCI is K, and the time domain resource is a time domain resource used by data of uplink communication. K can be divided into two parts, the first part has the length of

The second part is->

In the frequency domain, the starting position S' of each hop can be determined according to formula (9).

Wherein, the starting position S of the frequency domain resource indicated by RIV is RB _start ，RB _start Is an integer more than or equal to 0, and N is the number of RBs of the uplink BWP. First hop (RB) _start Is the start position indicated in RIV, the start position RB of the second hop (second hop) _start Adding a frequency offset RB to the first hop position _offset. wherein RB_offset The value of (2) can be determined by combining configuration information and DCI. For example, the terminal device receives network device transmission configuration information configuring a plurality of RBs _offset Comprises an indication field in DCI for indicating the plurality of RBs _offset One value of (a) is RB at the second jump time _offset 。

For example, the DCI indicates that the time domain resource length is 8, e.g., symbol 1 to symbol 8, for a total of 8 symbols. RIV indicates that the start position S is RB0, indicating RB _offset 4 RBs. The time domain resource used by the first hop is from symbol 1 to symbol 4, the frequency domain starting position used is RB0, the time domain resource used by the second hop is from symbol 5 to 8, and the frequency domain starting position used is RB4.

2. Inter-slot frequency hopping:

for data transmission within multiple consecutive slots, each slot is supported one hop. Specifically, the following formula (10) shows:

wherein, the starting position S of the frequency domain resource indicated by RIV is RB _start ，RB _start Is an integer more than or equal to 0, and N is the RB number of the downlink BWP.

Is the number of the slot. As in formula (9),>

in this case, the frequency domain start position S corresponding to the even numbered slot is the start position indicated by RIV in DCI. />

In the case of the frequency domain start position S' corresponding to the odd numbered time slots, the frequency domain offset RB needs to be added _offset . Specific RB _offset The determination method of (1) is described in slot internal frequency hopping, and is not repeated.

3. Frequency hopping for repeated transmission of uplink data multiple times:

for repeated transmission in multiple uplink, one hop per repetition is supported. RB at this point _start (i) The start position of the corresponding frequency domain resource may also be called i+1st uplink data repetition transmission. Let K be the total repetition number of the uplink data, the value range of n is an integer from 0 to K-1. At this time, the frequency hopping between slots is not limited. Specifically, the following formula (11) shows:

For example, if the transmission is repeated for the 0 th uplink data, the transmission is performed once for the uplink data retransmission, and if the transmission is performed for the 5 th uplink data retransmission, the transmission is performed six times for the uplink data retransmission, and the data content of each transmission is the same.

If the starting position S and the length L indicated by the RIV are set with the RBG as granularity, how to accurately determine the starting position of each hop when the frequency is hopped in the slot or between slots becomes a problem to be solved.

Example III

The embodiment provides a method for frequency hopping indication, which can be applied to the communication scene shown in fig. 1. The method can ensure that the terminal equipment accurately determines the frequency domain starting position of each hop in the frequency hopping process, and ensures that the network equipment side and the terminal have consistent understanding on the frequency domain position of the uplink data. As shown in fig. 7, the method includes:

s601, the network equipment sends a first frequency domain offset value to the terminal equipment, wherein the first frequency domain offset value indicates the interval between the starting position S' of the second frequency domain resource and the starting position S of the first frequency domain resource on the frequency domain, and the granularity of the first frequency domain offset value is a third RBG.

Correspondingly, the terminal equipment receives a first frequency domain offset value from the network equipment

S602, the terminal equipment determines the second frequency domain resource.

The first frequency domain resource is the first frequency domain resource defined in the first or second embodiment. Further, in the frequency hopping scenario, the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data, and the second frequency domain resource is a frequency domain resource corresponding to a second hop of the first data. It should be noted that, in the frequency hopping scenario, the first frequency domain resource is a part of the frequency domain resource used by the first data, and the frequency domain resource used by the first data should further include at least the second frequency domain resource.

The frequency hopping can be frequency hopping in slots or frequency hopping among slots. For frequency hopping among slots, the frequency domain resource corresponding to the first hop can be understood as the frequency domain resource corresponding to the even slot number, and the frequency domain resource corresponding to the second hop can be understood as the frequency domain resource corresponding to the odd slot number.

The granularity of S of the first hop in this embodiment may be the first RBG, and the size of the first RBG is rbg_s. The granularity of L of the first frequency domain resource may be a second RBG, and the size of the second RBG is rbg_l.

In S602, the implementation of determining the second frequency domain resource by the terminal device is specifically described below.

It should be noted that, in this embodiment, N is the total number of RBs included in the first BWP, where the first BWP includes the first frequency domain resource and the second frequency domain resource, or the first BWP is the BWP where the first data is located. RBG _offset I.e. the first frequency domain offset value. RBG _offset Can be determined in a manner similar to the previously mentioned RB in intra-slot hopping _offset The determination method is similar and will not be described in detail.

Implementation 3.1:

the granularity of the first frequency domain offset value in S601 is a third RBG, and the size of the third RBG is rbg_s.

Case one:

if S 'at this time specifically refers to the RBG number of the frequency domain resource starting position of the second hop, that is, the granularity of S' is the fourth RBG, and the size of the fourth RBG is rbg_s. The terminal device may determine S' by the following formula (12):

S’＝(S+RBG _offset ) mod N' formula (12)

Wherein N' is

With further reference to equations (9) and (10), a more complete formulation is performed. Hereinafter, S "is a starting position (indicated by RBG number) of the frequency domain resource corresponding to the i+1th hop.

1) Frequency hopping in Slot:

2) Frequency hopping among slots: i is the number of slots in the radio frame.

The above frequency hopping scheme can also be applied to the scenario of uplink repeated transmission.

3) For example, when the terminal device performs uplink communication, it may support not only intra-slot frequency hopping and inter-slot frequency hopping, but also a frequency hopping scenario in which uplink data is repeatedly transmitted (this time, the method is not limited to inter-slot frequency hopping). Here, S "may also be referred to as a start position of the frequency domain resource corresponding to the i+1st uplink data repetition. Let K be the total repetition number of the uplink data, the value range of i is an integer from 0 to K-1.

For the meaning of repeated transmission, for example, if uplink data is repeatedly transmitted 5 times, it represents that the uplink data is transmitted 5 times and the data content of each transmission is the same.

4) For another example, uplink data multiple repetition transmission may be supported, and the start position of the frequency domain resource of the (i+1) th repetition transmission may be relative to the (i) th repetition transmissionIs fixed by RBG (radial basis function) at the initial position of frequency domain resource of (2) _offset Is a frequency hopping scene of (a). At this time, S "may also be referred to as a start position of the frequency domain resource corresponding to the i+1st uplink data repetition. K is the total repetition number of the uplink data, and the value range of i is an integer from 0 to K-1.

/>

In the case, by setting RBG _offset The granularity of the frequency domain resource is RBG_S, and the number granularity corresponding to the starting position of the frequency domain resource of each hop can be the same in this way, so that the resource allocation of the base station is simpler, the complexity of the resource allocation of the network equipment is reduced, and the complexity of the terminal calculation is also reduced.

And a second case:

if S 'specifically indicates the RB number of the frequency domain resource start position of the second hop at this time, the terminal device may determine S' by the following formula (17):

S’＝(S*RBG_S+RBG _offset * RBG_S) mod N formula (17)

With further reference to equations (9) and (10), a more complete formulation is performed. S "is the start position (indicated by RB number) of the frequency domain resource corresponding to the i+1st frequency hopping.

1) Frequency hopping in Slot:

2) Frequency hopping among slots: i is the number of slots in the radio frame.

3) Similarly, in the scenario where uplink data is repeatedly transmitted multiple times, s″ is also referred to as the start position of the frequency domain resource corresponding to the i+1st uplink data repetition. Let K be the total repetition number of the uplink data, the value range of i is an integer from 0 to K-1.

4) Repeatedly transmitting uplink data for multiple times, wherein the initial position of the frequency domain resource of the (i+1) th repeated transmission is fixedly different from the initial position of the frequency domain resource of the (i) th repeated transmission by RBG (radial basis function) _offset In the frequency hopping scenario of (2), S "is also referred to as the start position of the frequency domain resource corresponding to the i+1st uplink data repetition. K is the total repetition number of the uplink data, and the value range of i is an integer from 0 to K-1.

In case two, by setting RBG _offset The granularity of (1) is RBG_S, which is favorable for unifying with the indication of S and reducing the complexity of terminal calculation. And each hop specifically indicates the RB number of the starting position of the frequency domain resource through S', which is more beneficial to reasonable allocation of the resource.

Implementation 3.2:

the granularity of the first frequency domain offset value in S601 is a third RBG, and the size of the third RBG is rbg_l.

If S 'specifically indicates the RB number of the frequency domain resource start position of the second hop at this time, the terminal device may determine S' by the following formula (20):

S’＝(S*RBG_S+RBG _offset * RBG_L) mod N formula (22)

1) Frequency hopping in Slot:

2) Frequency hopping among slots: i is the number of slots in the radio frame.

3) Similarly, in the frequency hopping scenario where uplink data is repeatedly transmitted multiple times, s″ is also referred to as the start position (indicated by RB number) of the frequency domain resource corresponding to the i+1st uplink data repetition. Let K be the total repetition number of the uplink data, the value range of i is an integer from 0 to K-1.

4) The uplink data is repeatedly transmitted for a plurality of times, and the initial position of the frequency domain resource of the (i+1) th repeated transmission is fixedly different from the initial position of the frequency domain resource of the (i) th repeated transmission by RBG (radial basis function) _offset Is a frequency hopping scene of (a). At this time, S "is also referred to as a start position of the frequency domain resource corresponding to the i+1st uplink data repetition. K is the total repetition number of the uplink data, and the value range of i is an integer from 0 to K-1.

In the second implementation mode, by setting up RB _offset The granularity of (2) is RBG_L, and the granularity of (L) is unified, so that the interval between two adjacent frequency hopping is an integral multiple of RBG_L, and thus, the frequency domain resources can be continuously allocated, and the waste of the frequency domain resources is avoided. And the frequency domain resource starting position of each hop is indicated by the RB number, which is more beneficial to reasonable allocation of resources.

Implementation 3.3

When rbg_s=rbg_l=p, the granularity of the first frequency domain offset value in S601 is a third RBG, and the size of the third RBG is P. I.e. the granularity of the first offset value is the same as the granularity of S, L.

If S' at this time specifically refers to the RBG number of the frequency domain resource start position of the second hop, the start RBG number may be denoted as RBG _start I.e. the granularity of S 'is P, the terminal device can determine S' by the following formula (27):

S’＝(S+RBG _offset ) mod N2 formula (27)

Wherein, N2 and S may be determined according to the implementation manner 1.4 of the first embodiment, which is not described herein. With further reference to equations (9) and (10), a more complete formulation is performed.

1) In the Slot internal frequency hopping scene, the starting RBG of the (i+1) th hop is as follows:

i equal to 0 represents the start position of the frequency domain resource corresponding to the first hop, i.e. the start position of the first frequency domain resource, and i=1 represents the start position of the frequency domain resource corresponding to the second hop, i.e. the start position of the first frequency domain resource.

2) Frequency hopping among slots, and starting RBG in Slot i is as follows:

i mod 2 = 0 represents the starting position of the frequency domain resource corresponding to the first hop, i.e. the starting position of the first frequency domain resource, i.e. the starting position of the frequency domain resource in an even number of time slots, and i mod 2 = 1 represents the starting position of the frequency domain resource corresponding to the second hop, i.e. the starting position of the second frequency domain resource, i.e. the starting position of the frequency domain resource in an odd number of time slots.

3) The frequency hopping of repeated transmission of uplink data is carried out, and the starting RBG of repeated transmission of the ith time is as follows:

i mod 2=0 represents a start position of the frequency domain resource corresponding to the first hop, that is, a start position of the first frequency domain resource, that is, a start position of the frequency domain resource corresponding to the even number of repetition transmission, and i mod 2=1 represents a start position of the frequency domain resource corresponding to the second hop, that is, a start position of the second frequency domain resource, that is, a start position of the frequency domain resource corresponding to the odd number of repetition transmission.

In the various embodiments described above, S "and S can both be referred to as RBGs _start 。

By setting RBG _offset The granularity of the frequency domain resource is RBG, and the number granularity corresponding to the starting position of the frequency domain resource of each hop can be the same in this way, so that the resource allocation of the base station is simpler, the complexity of the resource allocation of the network equipment is reduced, and the complexity of the terminal calculation is also reduced.

It should be noted that, although the initial value of i is 0, it is not excluded that the initial value may start from 1 or other values, and those skilled in the art may directly make a corresponding transformation to the above formula related to i without using creative effort. The present embodiment may be independent of the first embodiment and the second embodiment, and may be combined with any one of the first embodiment and the second embodiment to form a more complete communication scheme, which is not limited in this application.

In S602, after determining S' or s″ according to any one of the formulas (12) to (31), the terminal device may determine the second frequency domain resource corresponding to the second hop (or the frequency domain resource corresponding to a certain subsequent hop) by combining the value of the foregoing implementation mode L of the first embodiment 1.4. The terminal device may then send the first data to the network device on the second frequency domain resource, thereby enabling frequency hopping transmission of the first data.

In particular, in implementation 3.3, the length L' of the second frequency domain resource (or referred to as the second hop, the odd time slot, or the frequency domain resource that is repeatedly transmitted for the odd time) is valued in the following 2 ways:

mode a: l '=l, where P is the granularity, then L' is also the granularity of P. The number of RBGs occupied by the frequency domain resource length of each hop is the same, and the RBGs are the granularity of L indicated by the RIV value. As described in implementation 1.4 of the first embodiment, in practice, the sizes of the N2 RBGs included in the first BWP may be different, so the number of RBs included in the frequency domain resource corresponding to each hop may be different.

For example, in the first BWP, n=11 RBs, and in the example corresponding to fig. 5 in embodiment 1.4, n2=4, that is, there are 4 RBGs, where the first RBG is 1 RB, the second RBG and the third RBG are 2 RBs, and the fourth RBG is 2 RBs. Assuming that RIV indicates s=0 and l=2, the first frequency domain resource includes 2 RBGs. Assume RBG _offset =1 RBG, then the first frequency domain resource and the second frequency domain resource each comprise 2 RBGs, as shown by the gray grid and the vertical-lined grid in fig. 8, respectively.

Mode b:

l '=l, where P is the granularity, then L' is also the granularity of P. The second frequency domain resource length L' may be determined according to s″ corresponding to the second frequency domain resource and the number of RBs actually included in the first frequency domain resource. The number of RBs actually included in the first frequency domain resource is the number of RBs determined according to the S and the L. For example, in implementation 1.4 of the first embodiment, the number of RBs included in each of the N2 RBGs in the first BWP may be determined, so that the number of RBs included in the first frequency domain resource may be determined according to S and L indicated by the RIV.

Specifically, the manner of determining L' according to s″ corresponding to the second frequency domain resource and the number of RBs actually included in the first frequency domain resource is: and determining a reference frequency domain resource, wherein the reference frequency domain resource is the number of RBs which are actually included in the first frequency domain resource and are continuously included from the S < th >. If the ending RB position of the reference frequency domain resource is inside a jth RBG of the N2 RBGs, but not a starting RB of the jth RBG or an ending RB of the jth RBG, the second frequency domain resource is from the corresponding RBG of S' to the ending of the jth RBG or to the ending of the jth-1 RBG. If the ending RB of the reference frequency domain resource is the ending RB of the jth RBG, the second frequency domain resource is from the corresponding RBG of S' to the ending of the jth RBG. j is a positive integer less than or equal to N2.

For example, in the first BWP, n=11 RBs, and in the example corresponding to fig. 5 in embodiment 1.4, n2=4, that is, there are 4 RBGs, where the first RBG is 1 RB, the second RBG and the third RBG are 4 RBs, and the first RBG is 4 RBsFour RBGs are 2 RBs. Assuming that RIV indicates s=0 and l=2, the first frequency domain resource includes a first RBG and a second RBG. L=2 RBGs, the number of RBs actually included in the first frequency domain resource is 5 RBs. Assume RBG _offset =1 RBG, and the starting RB corresponding to the second frequency domain resource is the starting RB of the second RBG: and determining the second RB as the third frequency domain resource, and starting from the second RB, and continuing for 5 RBs. The ending RB position of the third frequency domain resource is within the 3 rd RBG, i.e., the ending RB position of the third frequency domain position is not the starting RB of the 3 rd RBG nor the ending RB of the 3 rd RBG, then the second frequency domain resource position is from the second RBG to the 3 rd RBG end (as in the position of the cross-hatched line of fig. 9), or from the second RBG to the 2 nd RBG end (as in the position of the cross-hatched line of fig. 9).

Example IV

The embodiment provides a method for frequency hopping indication, which can be applied to the communication scene shown in fig. 1. The method can ensure that the terminal equipment accurately determines the frequency domain starting position of each hop in the frequency hopping process, and ensures that the network equipment side and the terminal have consistent understanding on the frequency domain position of the uplink data. As shown in fig. 10, the method includes:

S701, the network device sends a second frequency domain offset value to the terminal device, where the second frequency domain offset value indicates an interval between a start position S' of the second frequency domain resource and a start bit position S of the first frequency domain resource on a frequency domain, and granularity of the second frequency domain offset value is RB.

Correspondingly, the terminal equipment receives a second frequency domain offset value from the network equipment

S702, the terminal equipment determines the second frequency domain resource.

The meaning of the first frequency domain resource and the second frequency domain resource in this embodiment has been explained in the three embodiments, and thus will not be repeated. Similarly, in this embodiment, the granularity of S of the first hop may be the first RBG, and the size of the first RBG is rbg_s.

In the following detailed description 702, the terminal device determines an implementation of the second frequency domain resource.

It should be noted that in this embodiment, N is the first BWPThe first BWP includes a first frequency domain resource and a second frequency domain resource, or the first BWP is the BWP where the first data is located. RB (radio bearer) _offset Namely a second frequency domain offset value, the granularity of which is RB. RB (radio bearer) _offset The determination mode of (a) can refer to RB in slot internal frequency hopping _offset The description is omitted.

Implementation 4.1:

if S 'specifically indicates the RBG number of the frequency domain resource starting position of the second hop, the granularity of S' is a fourth RBG, and the size of the fourth RBG is rbg_s. The terminal device may determine S' by the following formula (32):

Wherein N' is

With further reference to equations (9) and (10), a more complete formulation is performed. S "is the start position (indicated by RBG number) of the frequency domain resource corresponding to the i+1st frequency hopping.

1) Frequency hopping in Slot:

2) Frequency hopping among slots: i is the number of slots in the radio frame.

3) For example, when the terminal device performs uplink communication,

not only intra-slot frequency hopping and inter-slot frequency hopping can be supported, but also a frequency hopping scene (not limited to inter-slot frequency hopping at this time) of uplink data repetition transmission can be supported, and at this time, S "can also be called as the starting position of the frequency domain resource corresponding to the i+1st uplink data repetition. Let K be the total repetition number of the uplink data, the value range of i is an integer from 0 to K-1.

4) For example, the method may support uplink data multiple repetition transmission, and the start position of the frequency domain resource of the (i+1) -th repetition transmission may be fixed by a difference RB with respect to the start position of the frequency domain resource of the (i) -th repetition transmission _offset Is a frequency hopping scene of (a). At this time, S "may also be referred to as a start position of the frequency domain resource corresponding to the i+1st uplink data repetition. K is the total repetition number of the uplink data, and the value range of i is an integer from 0 to K-1.

RB in implementation one _offset Granularity of RB, backward compatibility can be ensured. And ensures the RB pairs of the terminal device and the network device _offset Understanding the consistency, each hop specifically indicates the RBG number of the starting position of the frequency domain resource, and the RBG number is consistent with S, so that the complexity of the frequency domain resource allocation algorithm can be reduced.

Implementation 4.2:

if S 'specifically indicates the RB number of the second hop-domain resource start position at this time, the terminal device may determine S' by the following formula (30):

S’＝(S*RBG+RB _offset ) mod N formula (37)

1) Frequency hopping in Slot:

2) Frequency hopping among slots: i is the number of slots in the radio frame.

3) Similarly, in the frequency hopping scenario where uplink data is repeatedly transmitted multiple times, s″ is also referred to as the start position of the frequency domain resource corresponding to the i+1st uplink data repetition. Let K be the total repetition number of the uplink data, the value range of i is an integer from 0 to K-1.

4) The uplink data is repeatedly transmitted for a plurality of times, and the initial position of the frequency domain resource of the (i+1) th repeated transmission is fixedly different from the initial position of the frequency domain resource of the (i) th repeated transmission by RB _offset Is a frequency hopping scene of (a). At this time, S "is also referred to as a start position of the frequency domain resource corresponding to the i+1st uplink data repetition. K is the total repetition number of the uplink data, and the value range of i is an integer from 0 to K-1.

Further, the following embodiment is based on implementation 1.4 of embodiment one:

if RB at this time _start Specifically, referring to the RB number of the frequency domain resource start position of the first hop, the terminal device may determine the frequency domain start position of each hop through equations (9) to (11):

RB at this time _start Can be determined based on the number of RBGs of each of the S and N2 RBGs. For example, according to implementation 1.4 of the first embodiment, the number of RBs included in each RBG in the first BWP and the starting RB of each RBG are determined, and if the corresponding RBG is found according to S, the starting RB of the RBG is the RB _start 。

RB _offset The network device can send indication information to indicate to the terminal device, and the RB can ensure the resource utilization rate _offset May be an integer multiple of P. Namely RB _offset =c×p, where C is a positive integer.

Alternatively, RBs may be configured _offset With a plurality of candidate values. The candidate value includes at least one of: the number of RBs in the first RBG of the N2 RBGs, the number of RBs in the last RBG of the N2 RBGs, an integer multiple of the number of RBs (i.e., P) in the remaining RBGs of the N2 RBGs, and a sum of the number of RBs of the first RBG and the integer multiple of the number of RBs (i.e., P) in the remaining RBGs.

At this time, in S701, the network device sends the second frequency domain offset value to the terminal device, specifically, the network device sends a second set of frequency domain offset values to the terminal device, where the set includes at least one of the following: the number of RBs in the first RBG of the N2 RBGs, the number of RBs in the last RBG of the N2 RBGs, an integer multiple of the number of RBs (i.e., P) in the remaining RBGs of the N2 RBGs, and a sum of the number of RBs of the first RBG and the integer multiple of the number of RBs (i.e., P) in the remaining RBGs. The network device further indicates a second set of frequency domain offset values by transmitting fifth indication information indicating one of the second set of frequency domain offset values.

The terminal equipment receives the second frequency domain offset value set and the fifth indication information, so that the second frequency domain offset value is determined.

RB in implementation II _offset Granularity of RB, backward compatibility can be ensured. And ensures that the end device and the network device understand the offset consistently.

The present embodiment to be described may be independent of the first to second embodiments, or may be combined with any one of the first and second embodiments to form a more complete communication scheme, which is not limited in this application.

In S702, after determining S' or S "according to any one of the formulas (32) to (41), the terminal device may determine the second frequency domain resource corresponding to the second hop (or the frequency domain resource corresponding to a certain subsequent hop) by combining the value of L.

The value of the length L' of the second frequency domain resource may be referred to the description related to the third embodiment, which is not repeated here.

The terminal device may then send the first data to the network device on the second frequency domain resource, thereby enabling frequency hopping transmission of the first data.

In the embodiments provided in the present application, the communication method provided in the embodiments of the present application is described from the point of view that the network device and the terminal device are the execution subjects. In order to implement the functions in the communication method provided in the embodiments of the present application, the terminal device and the network device may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

Example five

As with the above concepts, as shown in fig. 11, the embodiment of the present application further provides an apparatus 800, where the apparatus 800 includes a transceiver module 801 and a processing module 802.

In an example, the apparatus 800 is configured to implement the functions of the terminal device in the above method. The device can be a terminal device or a device applied to the terminal device. Wherein the device may be a system-on-chip. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

Wherein, the transceiver module 801 is configured to receive information from a network device or send information to the network device; the processing module 802 is used for performing functions other than information transceiving functions. Information in this application may include data, signaling, reference signals, and the like.

Specifically, taking the function of the terminal device in the first embodiment as an example, the transceiver module 801 is configured to receive a resource indication value RIV from a network device, where the RIV is used to indicate a starting position S and a length L of a first frequency domain resource, and the first frequency domain resource is a part or all of frequency domain resources used by the first data; the granularity of S is a first resource block group RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, the size of the second RBG is RBG_L, and the value of RIV is related to the RBG_S and/or the RBG_L; a processing module 802 is configured to determine the first frequency domain resource according to the RIV; the transceiver module 801 is further configured to send the first data to the network device on the first frequency domain resource, or receive the first data from the network device on the first frequency domain resource; wherein S and RIV are integers greater than or equal to zero, and L, RBG_S and RBG_L are positive integers.

In an example, the apparatus 800 is configured to implement the functions of the network device in the above method. The device may be a network device or a device applied to a network device. Wherein the device may be a system-on-chip. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

Wherein, the transceiver module 801 is configured to receive information from a network device or send information to the network device; the processing module 802 is used for performing functions other than information transceiving functions.

Specifically, taking the function of the network device in the first embodiment as an example, the transceiver module 801 is configured to send a resource indication value RIV to the terminal device, where the RIV is used to indicate a starting position S and a length L of a first frequency domain resource, and the first frequency domain resource is a part or all of frequency domain resources used by the first data; the granularity of S is a first resource block group RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, the size of the second RBG is RBG_L, and the value of RIV is related to the RBG_S and/or the RBG_L; the processing module 802 is configured to control the transceiver module 801 to send the first data to the terminal device on the first frequency domain resource, or receive the first data from the terminal device on the first frequency domain resource. Wherein S and RIV are integers greater than or equal to zero, and L, RBG_S and RBG_L are positive integers.

For specific execution of the transceiver module 801 and the processing module 802, reference is made to the description in the first embodiment. The division of the modules in the embodiments of the present application is schematically only one logic function division, and there may be another division manner in actual implementation, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, or may exist separately and physically, or two or more modules may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules.

It is understood that the apparatus 800 may also be used to implement the functions of the terminal device and the network device in the second to fourth embodiments. Those skilled in the art can easily obtain the embodiments of the apparatus for implementing the terminal device and the network device in the second to fourth embodiments without performing creative labor by combining the descriptions of the embodiments of the apparatus and the descriptions of the processes in the second to fourth embodiments, which are not described herein.

Example six

As with the concepts described above, the present embodiment also provides an apparatus 900, as shown in fig. 12. The apparatus 900 comprises at least one processor 901.

In an example, the apparatus 900 is used to implement the functions of the terminal device in the above method, and the apparatus may be a terminal device, or an apparatus applied to a terminal device, such as a chip. The processor 901 is configured to implement the functions of the terminal devices in the first to fourth embodiments described above. With specific reference to the detailed description of the first to fourth embodiments, they will not be described here.

In another example, the apparatus 900 is configured to implement the functions of the network device in the above method, where the apparatus may be a network device, or may be an apparatus applied in a network device, such as a chip. The apparatus 900 includes at least one processor 901, configured to implement the functions of the network devices in the first to fourth embodiments.

In some implementations, the apparatus 900 may also include at least one memory 902 for storing program instructions and/or data. The memory 902 is coupled to the processor 901. The coupling in the embodiments of the present application is a spaced coupling or communication connection between devices, units or modules, and may be in electrical, mechanical or other forms, for information interaction between devices, units or modules. As another implementation, the memory 902 may also be located external to the apparatus 900. The processor 901 may operate in conjunction with the memory 902. The processor 901 may execute program instructions stored in the memory 902. At least one of the at least one memory may be included in the processor.

In some embodiments, apparatus 900 may also include a communication interface 903 to communicate with other devices over a transmission medium, such that apparatus 900 may communicate with other devices. Illustratively, the communication interface 903 may be a transceiver, circuit, bus, or other type of communication interface, which may be a network device. The processor 901 transmits and receives information using the communication interface 903, and is used to implement the methods of the first to fourth embodiments described above.

The connection medium between the communication interface 903, the processor 901, and the memory 902 is not limited in the embodiments of the present application, and may be connected by a bus, for example, which may include at least one of an address bus, a data bus, and a control bus.

In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware in a processor for performing the steps of the method, or in a combination of hardware and software modules in a processor for performing the steps of the method.

In the embodiment of the present application, the memory may be a nonvolatile memory, such as a Hard Disk (HD) or a Solid State Drive (SSD), or may be a volatile memory (volatile memory), for example, a random-access memory (RAM). The memory is any medium that can be used to carry or store program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of implementing a memory function for storing program instructions and/or data.

The method provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; optical media, such as digital video discs (digital video disc, DVD); but may also be a semiconductor medium such as an SSD or the like.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method of indicating frequency domain resources, comprising:

receiving a resource indication value RIV from network equipment, wherein the RIV is used for indicating a starting position S and a length L of a first frequency domain resource, and the first frequency domain resource is part or all of frequency domain resources used by first data; the granularity of S is a first resource block group RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, the size of the second RBG is RBG_L, and the value of RIV is related to the RBG_S and/or the RBG_L;

determining the first frequency domain resource according to the RIV;

transmitting the first data to the network device on the first frequency domain resource or receiving first data from the network device on the first frequency domain resource;

wherein, S and RIV are integers greater than or equal to zero, and L, RBG_S and RBG_L are positive integers;

wherein ,

when L is equal to 1, RIV is equal to S;

when the value of L is greater than 1,

wherein ,

to round down the symbol, N is the total number of resource blocks RB comprised by a first bandwidth portion BWP comprising said first frequency domain resource, said L has a value in the range of 1 to ∈>

And L and S satisfy L.times.RBG_L+S.times.RBG_S.ltoreq.N, +.>

j is an integer, and 2.ltoreq.j.ltoreq.L,

2. the method of claim 1, wherein the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data in a frequency hopping scenario, the method further comprising:

receiving a first frequency domain offset value from the network device, wherein the first frequency domain offset value indicates the interval between the starting position S' of a second frequency domain resource and the S on a frequency domain, the second frequency domain resource is a frequency domain resource corresponding to a second hop of the first data, and the granularity of the first frequency domain offset value is RBG_S;

and determining the second frequency domain resource according to the first frequency domain offset value.

3. The method of claim 1, wherein the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data in a frequency hopping scenario, the method further comprising:

receiving a second frequency domain offset value from the network device, wherein the second frequency domain offset value indicates an interval between a starting position S' of a second frequency domain resource and the S on a frequency domain, the second frequency domain resource is a frequency domain resource corresponding to a second hop of the first data, and granularity of the second frequency domain offset value is RBG_L;

And determining the second frequency domain resource according to the second frequency domain offset value, the RBG_S and the RBG_L.

4. The method of claim 1, wherein the method further comprises:

first indication information and second indication information are received from the network device, the first indication information indicating the rbg_s and the second indication information indicating the rbg_l.

5. A method of indicating frequency domain resources, comprising:

transmitting a resource indication value RIV to a terminal device, wherein the RIV is used for indicating a starting position S and a length L of a first frequency domain resource, and the first frequency domain resource is part or all of frequency domain resources used by first data; the granularity of S is a first resource block group RBG, the granularity of L is a second RBG, the size of the first RBG is RBG_S, the size of the second RBG is RBG_L, and the value of RIV is related to the RBG_S and/or the RBG_L;

transmitting the first data to the terminal equipment on the first frequency domain resource, or receiving the first data from the terminal equipment on the first frequency domain resource;

wherein ,

when L is equal to 1, RIV is equal to S;

when the value of L is greater than 1,

wherein ,

And L and S satisfy L.times.RBG_L+S.times.RBG_S.ltoreq.N, +.>

j is an integer, and 2.ltoreq.j.ltoreq.L,

6. the method of claim 5, wherein the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data in a frequency hopping scenario, the method further comprising:

and sending a first frequency domain offset value to the terminal equipment, wherein the first frequency domain offset value indicates the interval between the starting position S' of a second frequency domain resource and the S on a frequency domain, the second frequency domain resource is a frequency domain resource corresponding to a second hop of the first data, and the granularity of the first frequency domain offset value is RBG_S.

7. The method of claim 5, wherein the first frequency domain resource is a frequency domain resource corresponding to a first hop of the first data in a frequency hopping scenario, the method further comprising:

and sending a second frequency domain offset value to the terminal equipment, wherein the second frequency domain offset value indicates the interval between the starting position S' of a second frequency domain resource and the S on a frequency domain, the second frequency domain resource is a frequency domain resource corresponding to a second hop of the first data, and the granularity of the second frequency domain offset value is RBG_L.

8. The method of claim 5, wherein the method further comprises:

and sending first indication information and second indication information to the terminal equipment, wherein the first indication information indicates the RBG_S, and the second indication information indicates the RBG_L.

9. An apparatus comprising means for implementing the method of any one of claims 1 to 4 or 5 to 8.

10. An apparatus comprising a processor and a memory, the memory having instructions stored therein, which when executed by the processor, cause the apparatus to perform the method of any one of claims 1 to 4 or 5 to 8.

11. A computer readable storage medium storing instructions which, when executed, implement the method of any one of claims 1 to 4 or 5 to 8.