CN113498183A

CN113498183A - Method and device for indicating frequency domain resources

Info

Publication number: CN113498183A
Application number: CN202010261429.1A
Authority: CN
Inventors: 塔玛拉卡·拉盖施; 潘学明
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-10-12
Also published as: WO2021197383A1

Abstract

The embodiment of the invention provides a method and equipment for indicating frequency domain resources, wherein the method comprises the following steps: receiving first information, wherein the first information is used for indicating frequency domain resources allocated to the terminal in at least one frequency domain resource group in M frequency domain resource groups; the M frequency domain resource groups comprise N frequency domain resources, and both N and M are positive integers greater than or equal to 2. In the embodiment of the invention, the overhead of issuing the control information for indicating the frequency domain resource allocation at the network side can be reduced.

Description

Method and device for indicating frequency domain resources

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for indicating frequency domain resources.

Background

In a New Radio (NR) system, Frequency Domain Resource Allocation (FDRA) field indication in Downlink Control Information (DCI) indicates that Frequency Domain resources are scheduled to be of type 0(type 0) and type 1(type 1).

In the Type 0 frequency domain Resource allocation method, the size of a Resource Block Group (RBG) is divided according to the Bandwidth Part (BWP) size (the number of Physical Resource Blocks (PRBs) in the BWP), which is shown in table 1.

Table 1:

each RBG indicates whether it is occupied with 1 bit, such as: BWP size is 36 PRBs, according to configuration 1 in the table: one RBG size is 2, and there are 18 RBGs in total, that is, 18 bits are used to indicate frequency domain resources in DCI, for example, a certain bit is "1" to indicate that the RBG is allocated to the terminal in the current scheduling, and a bit is "0" to indicate that the RBG is not allocated to the terminal in the current scheduling.

In the Type 1 frequency domain Resource allocation method, Resource Indication Value (RIV) is indicated to indicate frequency domain Resource allocation, and RIV indicates the allocated starting PRB position and the number of continuously allocated PRBs.

When multiple transmission points (multi TRPs) and multiple Downlink Control Information (DCI) schedule the same User Equipment (UE), Frequency-division multiplexing (FDM) scheduling may be performed in one slot (slot), for example, when two transmission points (TRP1, TRP2) schedule one UE, the two transmission points need to transmit DCI1 and DCI2, and the scheduled time domain resource Information is transmitted to the UE in DCI1 and DCI2 by TRP1 and TRP2, respectively.

Therefore, the existing frequency domain resource indication method has high overhead.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a method and a device for indicating frequency domain resources, which solve the problem of high overhead in the existing frequency domain resource indication method.

In a first aspect, an embodiment of the present invention provides a method for indicating frequency domain resources, where the method is applied to a terminal, and the method includes:

receiving first information, wherein the first information is used for indicating frequency domain resources allocated to the terminal in at least one frequency domain resource group in M frequency domain resource groups;

the M frequency domain resource groups comprise N frequency domain resources, and both N and M are positive integers greater than or equal to 2.

In a second aspect, an embodiment of the present invention further provides a method for indicating frequency domain resources, which is applied to a network device, and the method includes:

sending first information, where the first information is used to indicate frequency domain resources allocated to the terminal in at least one of the M frequency domain resource groups;

In a third aspect, an embodiment of the present invention further provides a terminal, including:

a receiving module, configured to receive first information, where the first information is used to indicate a frequency domain resource allocated to the terminal in at least one of M frequency domain resource groups;

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

a sending module, configured to send first information, where the first information is used to indicate a frequency domain resource allocated to the terminal in at least one of the M frequency domain resource groups;

In a fifth aspect, an embodiment of the present invention further provides a communication device, including: a processor, a memory and a program stored on the memory and executable on the processor, which program, when executed by the processor, performs the method steps of frequency domain resource indication as set forth in the first or second aspect.

In a sixth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for frequency domain resource indication according to the first aspect or the second aspect.

In the embodiment of the present invention, in a frequency domain resource allocation manner under the condition of single transmission point (single TRP) transmission, because the first information issued by a single transmission point may indicate frequency domain resources allocated to a terminal in one or more frequency domain resource groups, and does not need to indicate whether each frequency domain resource in all frequency domain resources is allocated to the terminal, the number of information bits in the first information may be reduced, and the overhead of issuing control information by a network side is saved. Also in the frequency domain resource allocation mode under the condition of multiple transmission point (multi TRP) transmission, since the first information may indicate the frequency domain resources allocated by multiple transmission points to the terminal in one or more frequency domain resource groups, instead of the condition that each transmission point issues the control information to indicate the frequency domain resource allocation, the overhead of issuing the control information by the network side may be reduced. .

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings.

In the drawings:

FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;

FIG. 2 is a flowchart of a method for frequency domain resource indication according to an embodiment of the present invention;

FIG. 3 is a second flowchart of a method for frequency domain resource indication according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a terminal according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a network device according to an embodiment of the invention;

fig. 6 is a schematic diagram of a communication device according to an embodiment of the present invention.

Detailed Description

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

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.

The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.

Embodiments of the present invention are described below with reference to the accompanying drawings. The method and the device for indicating the frequency domain resources provided by the embodiment of the invention can be applied to a wireless communication system. Referring to fig. 1, an architecture diagram of a wireless communication system according to an embodiment of the present invention is shown. As shown in fig. 1, the wireless communication system may include: network device 10, network device 11, and terminal 12, terminal 12 may be referred to as UE12, and terminal 12 may communicate (transmit signaling or transmit data) with network device 10, network device 11. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.

The network device 10 and the network device 11 provided in the embodiment of the present invention may be base stations, which may be commonly used base stations, evolved node base stations (enbs), or network devices in a 5G system (for example, next generation base stations (gnbs) or Transmission and Reception Points (TRPs)).

The terminal 12 provided in the embodiment of the present invention may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device.

Referring to fig. 2, an embodiment of the present invention further provides a method for indicating frequency domain resources, where an execution subject of the method may be a terminal, and the method includes: step 201.

Step 201: and receiving first information, wherein the first information is used for indicating frequency domain resources allocated to the terminal in at least one frequency domain resource group in the M frequency domain resource groups.

The M frequency domain resource groups comprise N frequency domain resources, that is, each frequency domain resource group comprises at least one frequency domain resource, the at least one frequency domain resource is selected from N frequency domain resources, and both N and M are positive integers greater than or equal to 2;

alternatively, the frequency domain resources may be Resource Block Group (RBG), for example, 11 RBGs are divided into 2 frequency domain Resource groups, where one frequency domain Resource group includes 6 RBGs, and the other frequency domain Resource group includes 5 RBGs.

Alternatively, the frequency-domain Resource may be a Physical Resource Block (PRB) in a Bandwidth Part (BWP), for example, 36 PRBs in one BWP are divided into 2 frequency-domain Resource groups, where one frequency-domain Resource group includes 18 PRBs, and another frequency-domain Resource group includes 18 PRBs, and the frequency-domain Resource group may also be referred to as a sub-Bandwidth Part (sub-BWP).

It is to be understood that, in the embodiment of the present invention, the number of frequency domain resources and the number of frequency domain resource groups are not specifically limited.

Optionally, the grouping manner of the frequency domain resource groups is protocol convention or configured by the network side.

Such as: the grouping methods include, but are not limited to, the following: (1) grouping according to the number of frequency domain resources, for example, the total number of frequency domain resources is 11, the number of frequency domain resources of one group is 6, and the number of frequency domain resources of the other group is 5; (2) grouping according to the frequency domain resource number, for example, the frequency domain resources with odd numbers are in one group, and the frequency domain resources with even numbers are in another group; for another example, the total number of the frequency domain resources is 11, the first 6 frequency domain resources are numbered as one group, and the last 5 frequency domain resources are numbered as another group, which may also be referred to as consecutive numbered grouping.

It is to be understood that, in the embodiment of the present invention, the grouping manner of the frequency domain resources is not specifically limited.

The network device may also be referred to as a Transmission and Reception Point (TRP), or Transmission Point.

It can be understood that, in the frequency domain resource allocation mode under the condition of single transmission point (single TRP) transmission, since the first information issued by a single transmission point may indicate the frequency domain resources allocated to the terminal in one or more frequency domain resource groups, and does not need to indicate whether each frequency domain resource in all the frequency domain resources is allocated to the terminal, the number of information bits in the first information may be reduced, and the overhead of issuing control information by the network side is saved.

It can be understood that, in the frequency domain resource allocation manner under the condition of multiple transmission point (multi TRP) transmission, since the first information may indicate the frequency domain resources allocated by multiple transmission points for the terminal in one or more frequency domain resource groups, instead of the condition that each transmission point issues the control information to indicate the frequency domain resource allocation, the overhead of issuing the control information by the network side may be reduced.

Alternatively, the first Information may be Downlink Control Information (DCI), but is not limited thereto.

In the embodiment of the present invention, at least two items of the first information, the network device, and the frequency domain resource group have a correspondence relationship.

For example, the network device and the first information have a corresponding relationship, that is, after the terminal receives the first information, it can determine which network device allocates the frequency domain resources to the terminal through the frequency domain resource group according to the first information.

For example, the network device and the frequency-domain resource group have a corresponding relationship, that is, after the terminal receives the first information from the network device, it can determine, according to the first information, which frequency-domain resource group the network device allocates the frequency-domain resource to the terminal through.

For example, the first information and the frequency-domain resource group have a corresponding relationship, that is, after the terminal receives the first information from the network device, it can determine, according to the first information, which frequency-domain resource group the network device allocates the frequency-domain resource to the terminal through.

It can be understood that the correspondence relationship between the first information, the network device, and at least two of the frequency domain resource groups may be agreed by a protocol, or determined by a terminal, or configured by a network side.

For example, the first information may indicate frequency domain resources allocated by the network device 1 for the terminal in the frequency domain resource group 1; for another example, the first information indicates frequency domain resources allocated by the network device 1 to the terminal in the frequency domain resource group 1, and indicates frequency domain resources allocated by the network device 2 to the terminal in the frequency domain resource group 2. Since a plurality of frequency domain resources (for example, all frequency domain resources) of the terminal are divided into a plurality of groups, and then one or more network devices are indicated by the first information to allocate the frequency domain resources to the terminal in the corresponding frequency domain resource group, the number of information bits indicating allocation of the frequency domain resources in the first information can be reduced, and the frequency domain resource indication overhead is effectively reduced.

In some embodiments, the first information comprises: a Frequency Domain Resource Allocation (FDRA) field, the FDRA field comprising: at least one resource allocation bitmap (bitmap) for indicating: frequency domain resources allocated to the terminal in one or more groups of frequency domain resources, further the number of information bits in the resource allocation bitmap is equal to

I.e. the size of the frequency domain resource allocation domain is equal to

Wherein

Meaning that rounding up, for example,

it can be understood that, for N frequency domain resources, an N-bit bitmap needs to be configured according to the existing frequency domain resource indication manner, whereas in the embodiment of the present invention, only M resource allocation bitmaps need to be configured, and the number of information bits (or referred to as bits) in each resource allocation bitmap is less than N.

In the embodiment of the present invention, at least two items of the resource allocation bitmap, the network device that allocates the frequency domain resources using the resource allocation bitmap, and the frequency domain resource group have a correspondence relationship.

Illustratively, the resource allocation bitmap has a correspondence with network devices that allocate frequency domain resources using the resource allocation bitmap. For example, when multiple network devices simultaneously schedule the same terminal, each network device only indicates, through a corresponding resource allocation bitmap, that a frequency domain resource is allocated in a corresponding frequency domain resource group.

It can be understood that the correspondence between the resource allocation bitmap and the network device that allocates the frequency domain resource may be agreed by a protocol, or determined by the terminal, or configured by the network side, for example, the terminal may determine the correspondence between the resource allocation bitmap and the network device according to a preset rule, where the preset rule is set as: the first network device corresponds to a first resource allocation bitmap and the second network device corresponds to a resource allocation bitmap that is the first resource allocation bitmap plus an offset value.

Optionally, the correspondence between at least two of the resource allocation bitmap, the network device that allocates the frequency domain resources using the resource allocation bitmap, and the frequency domain resource group may be configured by the network side.

For example, the first information may further include: first indication information; the first indication information indicates at least one of: (1) the resource allocation bitmap corresponds to a network device for allocating frequency domain resources; (2) the resource allocation bitmap corresponds to a frequency domain resource group; (3) and the corresponding relation between the network equipment for allocating the frequency domain resources and the frequency domain resource groups.

Further, optionally, the first indication information includes: an information bit or a plurality of information bits, for example, one bit indication or a plurality of bits jointly coded indication: the corresponding relation between the resource allocation bitmap and the network equipment; and/or, the resource allocation bitmap corresponds to a set of frequency domain resources, such as one resource allocation bitmap corresponds to a plurality of sets of frequency domain resources.

It is understood that the form of the above-mentioned one bit or multiple bits joint coding may be a form agreed by a protocol or a form default at the network side and the terminal side.

Illustratively, when the one bit is "1", the network device is instructed to allocate the frequency domain resources in the corresponding frequency domain resource group 1 using the resource allocation bitmap, and when the one bit is "0", the network device is instructed to allocate the frequency domain resources in the corresponding frequency domain resource group 2 using the resource allocation bitmap. Or when the one bit is "1", the network device is instructed to allocate the frequency domain resources in the corresponding frequency domain resource group 2 using the resource allocation bitmap, and when the one bit is "0", the network device is instructed to allocate the frequency domain resources in the corresponding frequency domain resource group 1 using the resource allocation bitmap.

That is, the correspondence between one or more resource allocation bitmaps and the network device may be additionally indicated by a plurality of ratios in the first information, for example, when the plurality of bits are "00", the network device is indicated to allocate frequency-domain resources in the corresponding frequency-domain resource group 1 using the resource allocation bitmap, and when the one bit is "01", the network device is indicated to allocate frequency-domain resources in the corresponding frequency-domain resource group 2 using the resource allocation bitmap. When the plurality of bits are "11", the network device is instructed to allocate frequency domain resources in the corresponding frequency domain resource group 1 and frequency domain resource group 2, respectively, using the resource allocation bitmap.

All information bits of the resource allocation bitmap are valid, or the resource allocation bitmap includes at least one invalid information bit, for example, the last one or more information bits in the resource allocation bitmap are invalid, where valid refers to that the frequency domain resource corresponding to the information bit is valid, and invalid refers to that no frequency domain resource corresponding to the information bit exists.

In other embodiments, the first information comprises: a Resource Indication Value (RIV) Indication field, the Resource Indication Value Indication field including: at least one RIV for indicating: frequency domain resources allocated for the terminal in one or more frequency domain resource groups.

Wherein the resource indication value indicates the size of the domain and

is related to, if

If the value is large, the resource indication value is large in the frequency domain resource allocation domain, and if the value is large, the resource indication value is large in the frequency domain resource allocation domain

If the value is small, the resource indicating value is small in the frequency domain resource allocation domain.

It will be appreciated that the RIV may indicate the starting PRB location allocated and the number of consecutive allocated PRBs.

In the embodiment of the present invention, at least two items of the RIV, the network device that uses the RIV to allocate the frequency domain resources, and the frequency domain resource group have a correspondence relationship.

Illustratively, a frequency domain resource group has a correspondence with a network device that allocates frequency domain resources using RIVs. For example, when multiple network devices simultaneously schedule the same terminal, each network device only allocates frequency-domain resources in a corresponding frequency-domain resource group through a corresponding RIV indication.

It can be understood that the correspondence between the frequency-domain resource group and the network device may be agreed by a protocol, or determined by the terminal, or configured by the network side, for example, the terminal may determine the correspondence between the frequency-domain resource group and the network device according to a preset rule, where the preset rule is set as: the first network device corresponds to the first frequency domain resource group, and the frequency domain resource group corresponding to the second network device is the first frequency domain resource group plus an offset value.

Or, the corresponding relationship between the resource indication value and the network device for allocating the frequency domain resource is agreed by a protocol, or is determined by the terminal according to a preset rule, and the preset rule is set as: the first network device corresponds to a first RIV, and the second network device corresponds to an RIV that is the first RIV plus an offset value

Optionally, the corresponding relationship between at least two of the RIV, the network device that uses the RIV to allocate the frequency domain resources, and the frequency domain resource group may be configured by the network side.

Optionally, the first information further includes: first indication information indicating: (1) the corresponding relation between the RIV and one or more network devices; (2) a correspondence of a network device to one or more frequency-domain resource groups (sub-BWPs); (3) RIVs correspond to one or more frequency-domain resource groups (sub-BWPs).

Optionally, the first indication information includes: one information bit or a plurality of information bits.

For example, the first indication information includes: 1 bit of information, the bit being "0" indicating that the network device 1 allocates frequency-domain resources using the first sub-BWP, and the bit being "1" indicating that the network device 2 allocates frequency-domain resources using the second sub-BWP; or, the bit being "1" indicates that the network device 1 allocates frequency-domain resources using the first sub-BWP, and the bit being "0" indicates that the network device 2 allocates frequency-domain resources using the second sub-BWP;

for another example, the first indication information further includes: 1 bit of information, the bit being "0" indicating that the network device 1 allocates frequency-domain resources using the first frequency-domain resource group (first sub-BWP) or the second frequency-domain resource group (second sub-BWP), and the bit being "1" indicating that the network device 1 allocates frequency-domain resources using the first frequency-domain resource group (first sub-BWP) and the second frequency-domain resource group (second sub-BWP), i.e., allocates frequency-domain resources using two frequency-domain resource groups.

For example, jointly encoding with multiple bits indicates: and the corresponding relation between the network equipment and the frequency domain resource group (sub-BWP).

Illustratively, the way in which the two bits jointly encode the indication is as follows:

(1) two bits (0,0) indicate that the network device allocates frequency domain resources using a first sub-BWP;

(2) two bits (0,1) indicate that the network device allocates frequency domain resources using the second sub-BWP;

(3) two bits (1,1) indicate that the network device allocates frequency domain resources using a first sub-BWP and a second sub-BWP;

(4) the meaning to be expressed by two bits (1,0) is not limited.

In the embodiment of the invention, the overhead of issuing the control information for indicating the frequency domain resource allocation at the network side can be reduced.

Referring to fig. 3, an embodiment of the present invention further provides a method for indicating frequency domain resources, where an execution subject of the method is a network device, and the method includes: step 301.

Step 301: sending first information, wherein the first information is used for indicating frequency domain resources allocated to the terminal in at least one frequency domain resource group in M frequency domain resource groups;

In the embodiment of the present invention, in a frequency domain resource allocation manner under the condition of single transmission point (single TRP) transmission, because the first information issued by a single transmission point may indicate frequency domain resources allocated to a terminal in one or more frequency domain resource groups, and does not need to indicate whether each frequency domain resource in all frequency domain resources is allocated to the terminal, the number of information bits in the first information may be reduced, and the overhead of issuing control information by a network side is saved. In the frequency domain resource allocation mode under the condition of multiple transmission point (multi TRP) transmission, the first information may indicate the frequency domain resources allocated by the multiple transmission points to the terminal in one or more frequency domain resource groups, instead of the condition that each transmission point issues the control information to indicate the frequency domain resource allocation, so that the overhead of issuing the control information by the network side can be reduced. .

The first embodiment of the invention:

dividing RBG: {0,1,2,3,4,5,6,7,8,9,10} into 2 groups according to a preset grouping manner, that is, N ═ 11, M ═ 2, and the DCI received by the terminal may include: the size of the FDRA domain in the DCI is equal to that of the first bitmap and/or the second bitmap

A bit.

The preset grouping mode is as follows: for grouping according to the parity ordering of the RBG numbers, for example, the first bitmap corresponds to the RBG: {0,2,4,6,8,10}, the second bitmap corresponds to RBG: {1,3,5,7,9, x }. All bits of the first bitmap are valid and the last bit of the second bitmap is invalid.

Alternatively, transmission point 1(TRP1) only transmits at the RBG corresponding to the first bitmap: {0,2,4,6,8,10} allocating frequency domain resources, for example, the first bitmap is indicated as {0,1,1,0,1,0}, which indicates that the RBG number of the scheduled frequency domain resource is 2,4, 8; transmission point 2(TRP2) only transmits at the RBG corresponding to the second bitmap: {1,3,5,7,9, x } allocates frequency domain resources, for example, the second bitmap is denoted by {0,1,1,0,1,0}, which indicates that the RBG of the scheduled frequency domain resource is numbered 3,5, 9.

Further, if there are additional 1 bits in DCI, for example: the bit "0" indicates that TRP1 is at the RBG corresponding to the first bitmap: {0,2,4,6,8,10} allocates frequency domain resources, TRP2 is allocated in the RBG corresponding to the second bitmap: the frequency domain resources are allocated in the {1,3,5,7,9, x } allocation, and the bit of "1" indicates that the TRP1 is allocated in the RBG corresponding to the second bitmap: {1,3,5,7,9, x }, frequency domain resources are allocated, and the TRP2 is allocated in the RBG: (0, 2,4,6,8, 10) frequency domain resources are allocated.

For another example, a bit of "0" indicates that TRP1 is at the RBG corresponding to the second bitmap: allocating frequency domain resources in {1,3,5,7,9, x } allocation, wherein TRP2 is allocated in the RBG: {0,2,4,6,8,10}, where the bit is "1" indicates that the TRP1 allocates frequency-domain resources in the frequency-domain resource group corresponding to the first bitmap, and the TRP2 allocates frequency-domain resources in the RBG corresponding to the second bitmap: {0,2,4,6,8,10} frequency domain resources are allocated.

In the embodiment of the invention, the overhead of sending DCI for indicating frequency domain resource allocation at the network side can be reduced.

Embodiment two of the present invention:

A bit.

The preset grouping mode is as follows: grouping according to continuous RBG numbers, wherein a first bitmap corresponds to an RBG: {0,1,2,3,4,5}, the second bitmap corresponds to RBG: {6,7,8,9,10, x }. All bits of the first bitmap are valid and the last bit of the second bitmap is invalid.

Transmission point 1(TRP1) only transmits at the RBG corresponding to the first bitmap: {0,1,2,3,4,5} frequency domain resources are allocated, and transmission point 2(TRP2) is allocated only in the RBG corresponding to the second set of bitmap: {6,7,8,9,10, x } allocates frequency domain resources.

Further, if there are additional 1 bits in DCI, the bit "0" indicates that TRP1 is at the RBG corresponding to the first bitmap: {0,1,2,3,4,5} allocates frequency domain resources, TRP2 in the RBG corresponding to the second bitmap: {6,7,8,9,10, x } allocates frequency domain resources, and the bit "1" indicates that TRP1 is in the RBG corresponding to the second bitmap: {6,7,8,9,10, x } allocates frequency domain resources, TRP2 in the RBG corresponding to the first bitmap: {0,1,2,3,4,5} allocating frequency domain resources.

The third embodiment of the invention:

A bit.

The base station corresponds to the RBG at the first bitmap: {0,2,4,6,8,10} allocating frequency domain resources, or corresponding to RBG at the second bitmap: {1,3,5,7,9, x } allocates frequency domain resources such as: the first bitmap in the DCI indicates {0,1,1,0,1,0}, which indicates that the RBG number of the scheduled frequency domain resource is 2,4, 8, or the first bitmap in the DCI indicates {0,1,1,0,1,0}, which indicates that the RBG number of the scheduled frequency domain resource is 3,5, 9.

Further, if the DCI includes a first bit, for example, the bit is "0" indicating that the base station uses the first bitmap to correspond to the RBG: {0,2,4,6,8,10} allocates frequency domain resources, and the bit is "1" to indicate that the base station uses the second bitmap to correspond to the RBG: {1,3,5,7,9, x } allocating frequency domain resource degrees; for another example, the bit is "1" to indicate that the base station uses the first bitmap to correspond to the RBG: {0,2,4,6,8,10} allocates frequency domain resources, and the bit is "0" indicating that the base station uses the second bitmap to correspond to the RBG: {1,3,5,7,9, x } allocates frequency domain resource degrees.

Further, if the DCI also includes a second bit, for example, the bit being "0" indicates that the base station allocates frequency domain resources only using the frequency domain resource group corresponding to the first bitmap or the second bitmap, and the bit being "0" indicates that the base station allocates frequency domain resources using the frequency domain resource group corresponding to the two sets of bitmaps.

One protocol specifies or defaults to indicate two sets of bitmap modes:

when a certain bit in a bitmap in the DCI is "1", the corresponding bit in both sets of bitmaps is "1", except for the invalid bit: for example, in the DCI, the first bitmap or the indication of the first bitmap is {0,1,1,0,1,0} to indicate that the numbers of the scheduled frequency domain resources RBGs are 2,4, 8 (corresponding to the first bitmap) and 3,5,9 (corresponding to the second bitmap).

It is to be understood that the first bit and the second bit may also be jointly coded, such as:

(1) two bits (0,0) represent the RBG corresponding to the base station at the first bitmap: {0,2,4,6,8,10} allocating frequency domain resources;

(2) two bits (0,1) represent the RBG corresponding to the base station at the second bitmap: {1,3,5,7,9, x } allocating frequency domain resources;

(3) two bits (1,1) represent the RBGs of the base station corresponding to two sets of bitmaps: {0,2,4,6,8,10} and RBG: {1,3,5,7,9, x } allocating frequency domain resources;

(4) the meaning of two bits (1,0) is not limited.

It is understood that if only an additional 1 bit is included in the DCI, the 1 bit may implement the role of the first bit or the second bit described above.

The fourth embodiment of the present invention:

one BWP has a size of 35 PRBs, and starts with 0 th PRB, {0,1,2 …,17,18,19,. and 34}, and is divided into 2 groups according to a predetermined grouping manner, that is, N ═ 11, and M ═ 2, where the DCI received by the terminal may include: resource Indication Value (RIV).

Preset grouping mode 1: and grouping according to the parity ordering of the PRB numbers, and dividing the BWPs into two groups, wherein the first sub-BWP comprises { PRB with even number }, and the second sub-BWP comprises { PRB with odd number }.

Preset grouping mode 2: the BWPs are grouped into two groups according to continuous PRB numbers, the first sub-BWP comprises PRB {0,1,2 …,17}, and the second sub-BWP comprises PRB {18, 19.

Wherein the size of the RIV is calculated according to the size of the first BWP or the second BWP.

It is to be understood that the starting point of the first sub-BWP or the second sub-BWP may use the same starting point PRB or each set the starting point PRB separately.

Transmission point 1(TRP1) allocates frequency domain resources using only the first sub-BWP through the RIV, and transmission point 2(TRP2) allocates frequency domain resources using only the second sub-BWP through the RIV.

Further, if there are additional 1 bits in the DCI, the bit being "0" indicates that the TRP1 allocates frequency domain resources using the first sub-BWP, the TRP2 allocates frequency domain resources using the second sub-BWP, the bit being "1" indicates that the TRP1 allocates frequency domain resources using the second sub-BWP, and the TRP2 allocates frequency domain resources using the first sub-BWP.

The bit of "1" indicates that the TRP1 allocates frequency domain resources using the first sub-BWP, the TRP2 allocates frequency domain resources using the second sub-BWP, the bit of "0" indicates that the TRP1 allocates frequency domain resources using the second sub-BWP, and the TRP2 allocates frequency domain resources using the first sub-BWP.

Embodiment five of the present invention:

one BWP has a size of 35 PRBs, and starts with 0 th PRB, {0,1,2 …,17,18,19,. and 34}, and is divided into 2 groups according to a predetermined grouping manner, that is, N ═ 11, and M ═ 2, where the DCI received by the terminal may include: RIV

Wherein the size of the RIV is calculated according to the size of the first sub-BWP or the second sub-BWP.

For example, the base station may allocate frequency domain resources using the first sub-BWP.

Further, if a first bit is included in the DCI, the bit being "0" indicates that the TRP1 allocates frequency domain resources using the first sub-BWP, the TRP2 allocates frequency domain resources using the second sub-BWP, the bit being "1" indicates that the TRP1 allocates frequency domain resources using the second BWP, and the TRP2 allocates frequency domain resources using the first sub-BWP.

Further, if a second bit is included in the DCI, the bit being "0" indicates that the base station allocates the frequency domain resources using only the first sub-BWP or the second sub-BWP, and the bit being "1" indicates that the base station allocates the frequency domain resources using the first sub-BWP and the second sub-BWP.

Optionally, a protocol specifies or defaults the indication:

the RIV is valid for both the first sub-BWP and the second sub-BWP in DCI, where there is one less PRB in the second sub-BWP than the first sub-BWP, then there is one less PRB scheduled in the second sub-BWP if the last PRB in the first sub-BWP was scheduled.

The first bit and the second bit may be jointly encoded, for example:

(1) two bits (0,0) represent that the base station allocates frequency domain resources using the first sub-BWP;

(2) two bits (0,1) represent that the base station allocates frequency domain resources using the second sub-BWP;

(3) two bits (1,1) represent that the base station allocates frequency domain resources using a first sub-BWP and a second sub-BWP;

(4) the meaning to be expressed by two bits (1,0) is not limited.

Referring to fig. 4, an embodiment of the present invention further provides a terminal, where the terminal 400 includes:

a receiving module 401, configured to receive first information, where the first information is used to indicate a frequency domain resource allocated to the terminal in at least one of M frequency domain resource groups;

In some embodiments, the grouping manner of the frequency-domain resource groups is protocol convention or network-side configuration.

In some embodiments, the first information comprises: a frequency domain resource allocation domain, the frequency domain resource allocation domain comprising: a resource allocation bitmap, the resource allocation bitmap to indicate: frequency domain resources allocated for the terminal in one or more frequency domain resource groups.

In some embodiments, all information bits in the resource allocation bitmap are valid, or at least one invalid information bit is included in the resource allocation bitmap.

In some embodiments, the number of information bits in the resource allocation bitmap is equal to

In some embodiments, the first information comprises: a frequency domain resource allocation domain, the frequency domain resource allocation domain comprising: a resource indication value indicating: frequency domain resources allocated for the terminal in one or more frequency domain resource groups.

In some embodiments, if the frequency domain resource allocation domain includes a plurality of resource allocation bit maps, all information bits of at least one of the plurality of resource allocation bit maps are valid.

In some embodiments, the correspondence between the resource allocation bitmap and the network device that allocates the frequency domain resource is agreed by a protocol, or determined by the terminal according to a preset rule; or the corresponding relation between the frequency domain resource group and the network equipment for distributing the frequency domain resources is agreed by a protocol, or the terminal determines according to a preset rule; or, the corresponding relationship between the resource indication value and the network device for allocating the frequency domain resource is agreed by a protocol, or is determined by the terminal according to a preset rule.

In some embodiments, the first information further comprises: first indication information; wherein the first indication information indicates at least one of:

(1) the corresponding relation between the resource allocation bitmap and the network equipment;

(2) the resource allocation bitmap corresponds to a frequency domain resource group;

(3) the corresponding relation between the resource indicated value and the network equipment;

for example, a resource indication value corresponds to one or more network devices.

(4) The corresponding relation between the resource indicated value and the frequency domain resource group;

for example, one resource indication value corresponds to one or more frequency-domain resource groups.

(5) And the network equipment corresponds to the frequency domain resource group.

For example, one network device corresponds to one or more frequency-domain resource groups.

In some embodiments, the first indication information comprises: one information bit or a plurality of information bits.

The terminal provided in the embodiment of the present invention may execute the method embodiment shown in fig. 2, which has similar implementation principles and technical effects, and this embodiment is not described herein again.

Referring to fig. 5, an embodiment of the present invention further provides a network device, where the network device 500 includes:

a sending module 501, configured to send first information, where the first information is used to indicate a frequency domain resource allocated to the terminal in at least one of the M frequency domain resource groups;

The network device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 3, which has similar implementation principles and technical effects, and this embodiment is not described herein again.

Referring to fig. 6, fig. 6 is a structural diagram of a communication device applied in the embodiment of the present invention, and as shown in fig. 6, the communication device 600 includes: a processor 601, a transceiver 602, a memory 603, and a bus interface, wherein:

in one embodiment of the present invention, the communication device 600 further comprises: a computer program stored in the memory 603 and executable on the processor 601, the computer program implementing the steps in the embodiments shown in fig. 2 or fig. 3 when executed by the processor 601.

In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 601, and various circuits, represented by memory 603, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium, it being understood that the transceiver 602 is an optional component.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.

The communication device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 2 or fig. 3, which implements similar principles and technical effects, and this embodiment is not described herein again.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read-Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable hard disk, a compact disc Read Only Memory (cd-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

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

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

Claims

1. A method for frequency domain resource indication, applied to a terminal, the method comprising:

2. The method of claim 1,

the grouping mode of the frequency domain resource group is protocol agreement or network side configuration.

3. The method of claim 1, wherein the first information comprises: a frequency domain resource allocation domain, the frequency domain resource allocation domain comprising: a resource allocation bitmap, the resource allocation bitmap to indicate: frequency domain resources allocated for the terminal in one or more frequency domain resource groups.

4. The method of claim 3, wherein all information bits in the resource allocation bitmap are valid, or wherein at least one invalid information bit is included in the resource allocation bitmap.

5. The method of claim 3, wherein the number of information bits in the resource allocation bitmap is equal to

6. The method of claim 1, wherein the first information comprises: a frequency domain resource allocation domain, the frequency domain resource allocation domain comprising: a resource indication value indicating: frequency domain resources allocated for the terminal in one or more frequency domain resource groups.

7. The method according to claim 3 or 6,

the corresponding relation between the resource allocation bitmap and the network equipment for allocating the frequency domain resources is agreed by a protocol or determined by the terminal according to a preset rule;

alternatively, the first and second electrodes may be,

the corresponding relation between the frequency domain resource group and the network equipment for distributing the frequency domain resources is agreed by a protocol or determined by the terminal according to a preset rule;

alternatively, the first and second electrodes may be,

the corresponding relation between the resource indicated value and the network equipment for distributing the frequency domain resource is agreed by a protocol or determined by the terminal according to a preset rule.

8. The method of claim 3 or 6, wherein the first information further comprises: first indication information;

wherein the first indication information indicates at least one of:

the resource allocation bitmap corresponds to a network device for allocating frequency domain resources;

the resource allocation bitmap corresponds to a frequency domain resource group;

a correspondence of the resource indication value to the network device;

the corresponding relation between the resource indicated value and the frequency domain resource group;

and the network equipment corresponds to the frequency domain resource group.

9. The method of claim 8, wherein the first indication information comprises: one information bit or a plurality of information bits.

10. A method for frequency domain resource indication, applied to a network device, the method comprising:

sending first information, wherein the first information is used for indicating frequency domain resources allocated to a terminal in at least one frequency domain resource group in M frequency domain resource groups;

11. A terminal, comprising:

12. A network device, comprising:

a sending module, configured to send first information, where the first information is used to indicate a frequency domain resource allocated to a terminal in at least one of M frequency domain resource groups;

13. A communication device, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor, performs the method steps of frequency domain resource indication according to any of claims 1 to 9.

14. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of frequency domain resource indication according to any one of claims 1 to 9.