CN110324897B - Frequency domain resource allocation indication information sending method and device, frequency domain resource allocation indication information receiving method and device, storage medium, base station and user terminal - Google Patents
Frequency domain resource allocation indication information sending method and device, frequency domain resource allocation indication information receiving method and device, storage medium, base station and user terminal Download PDFInfo
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- CN110324897B CN110324897B CN201810266164.7A CN201810266164A CN110324897B CN 110324897 B CN110324897 B CN 110324897B CN 201810266164 A CN201810266164 A CN 201810266164A CN 110324897 B CN110324897 B CN 110324897B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
A method and device for sending indication information of frequency domain resource allocation, a method and device for receiving indication information of frequency domain resource allocation, a storage medium, a base station and a user terminal are provided, wherein the sending method comprises the following steps: determining the corresponding relation between each first VRB in the first BWP and a second VRB in the second BWP to be activated; determining a resource indication value according to the first BWP; and sending the resource indicated value to a user terminal so that the user terminal determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the corresponding relation. The scheme of the invention can schedule more VRBs for data transmission according to the BWP with less VRBs.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for sending indication information for frequency domain resource allocation, a method and an apparatus for receiving indication information, a storage medium, a base station, and a user terminal.
Background
A Downlink Control Information (DCI) format for scheduling a Physical Downlink Control Channel (PDSCH) in a New 5G air interface (NR) includes DCI1_0 and DCI1_1, and a DCI format for scheduling a Physical Uplink Control Channel (PUSCH) includes DCI0_0 and DCI0_1. Wherein, all DCI formats include Frequency domain resource allocation (Frequency domain resource allocation) for notifying the PDSCH/PUSCH Frequency domain resource location used by the User Equipment (UE).
In all DCI formats, it is supported to use a Resource Indication Value (RIV) in DCI to indicate an allocated frequency domain Resource location. The UE may derive a starting Virtual Resource Block (VRB) RB allocated from the RIV start And length L of VRB allocated consecutively CRBs And further determines a Physical Resource Block (PRB) from the VRB. Further, if the higher layer signaling is configured as a non-interleaved VRB-to-PRB mapping, VRBn is mapped as PRBn. If the higher layer signaling is configured to interleave the VRB-to-PRB mapping, the VRB maps to PRBs according to a certain rule.
In a 5G system, terminals with different bandwidth reception capabilities are supported. To support terminals with different Bandwidth reception capabilities, a partial carrier Bandwidth (BWP), which may also be referred to as a subband or Bandwidth portion, is proposed. After the UE completes RRC connection with the network, the network configures one or more BWPs for the UE according to service requirements of the UE, where one of the BWPs is a default BWP. The scheduling DCI may indicate that data is transmitted at the current BWP, which is referred to as local BWP scheduling; data transmission at other BWPs may also be indicated, referred to as cross-BWP scheduling.
However, in the prior art, a problem may occur that the field length for carrying the indication information of the frequency domain resource allocation is not sufficient to indicate the frequency domain resources on the BWP to be scheduled. Specifically, when cross-BWP scheduling is performed through DCI (i.e., DCI0_1 or DCI1_ 1), the length of the frequency domain resource allocation field in the DCI format depends on the current BWP, and if data on a wide BWP is currently scheduled for a narrow BWP, the length of the frequency domain resource allocation field is not long enough to indicate frequency domain resources on the wide BWP, i.e., it is difficult to schedule more VRBs for data transmission.
In addition, when the common search space detects a DCI format (i.e., DCI1_ 0or DCI0_ 0), the length of the frequency-domain resource allocation field depends on the initial BWP, and if the current active BWP is a wide BWP and the initial BWP is a narrow BWP, the length of the frequency-domain resource allocation field is not long enough to indicate the frequency-domain resources on the active BWP, i.e., it is difficult to schedule more VRBs for data transmission.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and apparatus for transmitting indication information for frequency domain resource allocation, a method and apparatus for receiving indication information, a storage medium, a base station, and a user terminal, which can schedule more VRBs for data transmission according to BWP with less VRBs.
In order to solve the above technical problem, an embodiment of the present invention provides a method for sending indication information of frequency domain resource allocation, including the following steps: determining a corresponding relation between each first VRB in a first BWP and a second VRB in a second BWP to be activated, wherein the number BWP1 of the first VRB is less than the number BWP2 of the second VRB, and the length of a field for carrying the indication information of the frequency domain resource allocation is determined according to the BWP 1; determining a resource indication value according to the first BWP; and sending the resource indicated value to a user terminal so that the user terminal determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the corresponding relation.
Optionally, the determining a correspondence between each first VRB in the first BWP and a second VRB in the second BWP to be activated includes: determining that first mod (BWP 2, BWP 1) first VRBs in the first BWP correspond to different ones of the second BWP, respectively
A second VRB; determining that remaining first VRBs in the first BWP correspond to different ones of the second BWP, respectively
A second VRB.
Optionally, the determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated further includes: determining that the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
Optionally, before determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, the method further includes: cross-BWP scheduling by DCI is determined, and the second BWP is scheduled by the first BWP.
Optionally, before determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, the method further includes: determining to detect the DCI format in a common search space, and the initial BWP is the first BWP.
To solve the foregoing technical problem, an embodiment of the present invention provides an apparatus for sending indication information of frequency domain resource allocation, including: a correspondence determination module adapted to determine a correspondence of each first VRB in a first BWP with a second VRB in a second BWP to be activated, wherein a number BWP1 of the first VRBs is smaller than a number BWP2 of the second VRBs, and a length of a field for carrying the frequency domain resource allocation is determined according to the BWP 1; a resource indication value determination module adapted to determine a resource indication value from the first BWP; a sending module, adapted to send the resource indication value to a user terminal, so that the user terminal determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the correspondence.
Optionally, the correspondence determining module includes: a first correspondence determination submodule adapted to determine that first mod (BWP 2, BWP 1) first VRBs in the first BWP respectively correspond to different ones of the second BWP
A second VRB; a second correspondence determination submodule adapted to determine that remaining first VRBs in the first BWP correspond to different ones of the second BWP, respectively
A second VRB.
Optionally, the correspondence determining module further includes: and the third corresponding relation determining submodule is suitable for determining that the second VRB corresponding to the adjacent next first VRB is continuous in value with the second VRB corresponding to the previous first VRB.
Optionally, the apparatus for sending indication information of frequency domain resource allocation further includes: a cross-BWP scheduling determination module adapted to determine to schedule the cross-BWP through DCI and schedule the second BWP through the first BWP before determining a correspondence of each first VRB in the first BWP to a second VRB in the second BWP to be activated.
Optionally, the apparatus for sending indication information of frequency domain resource allocation further includes: a common search space detection determination module adapted to determine that a DCI format is detected in a common search space and an initial BWP is a first BWP before determining a correspondence of each first VRB in the first BWP to a second VRB in a second BWP to be activated.
In order to solve the above technical problem, an embodiment of the present invention provides a method for receiving indication information of frequency domain resource allocation, including the following steps: receiving a resource indication value from a base station, the resource indication value being determined according to a first BWP; determining a starting first VRB and a first VRB length distributed in the first BWP according to the resource indicating value, and determining a second VRB distributed in a second BWP according to a corresponding relation; wherein each first VRB in the first BWPs has the corresponding relationship with a second VRB in a second BWP to be activated, the number BWP1 of the first VRBs is smaller than the number BWP2 of the second VRBs, and the length of the field for carrying the frequency domain resource allocation is determined according to the BWP1.
Optionally, the corresponding relationship includes: first mod (BWP 2, BWP 1) first VRBs in the first BWP respectively correspond to different ones in the second BWP
A second VRB; the remaining first VRBs in the first BWP correspond to different ones of the second BWP
A second VRB.
Optionally, the corresponding relationship further includes: the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
To solve the foregoing technical problem, an embodiment of the present invention provides an apparatus for receiving indication information of frequency domain resource allocation, including: a receiving module adapted to receive a resource indication value from a base station, the resource indication value being determined according to a first BWP; a second VRB determining module, adapted to determine a starting first VRB and a first VRB length allocated in the first BWP according to the resource indication value, and determine a second VRB allocated in a second BWP according to a corresponding relationship; wherein each first VRB in the first BWP has the corresponding relation with a second VRB in a second BWP to be activated, the number BWP1 of the first VRB is smaller than the number BWP2 of the second VRB, and the length of the field for carrying the frequency domain resource allocation is determined according to the BWP1.
Optionally, the corresponding relationship includes: the first mod (BWP 2, BWP 1) first VRBs in the first BWP correspond to none in the second BWPSame as that of
A second VRB; the remaining first VRBs in the first BWP correspond to different ones of the second BWP
A second VRB.
Optionally, the corresponding relationship further includes: the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
In order to solve the above technical problem, an embodiment of the present invention provides a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the method for sending indication information of frequency domain resource allocation described above are executed, or the steps of the method for receiving indication information of frequency domain resource allocation described above are executed.
In order to solve the above technical problem, an embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes, when executing the computer instructions, the step of sending the indication information of the frequency domain resource allocation.
In order to solve the above technical problem, an embodiment of the present invention provides a user terminal, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the user terminal executes the step of the indication information receiving method for frequency domain resource allocation when the processor executes the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the present invention, a corresponding relationship between each first VRB in a first BWP and a second VRB in a second BWP to be activated is determined, where the number BWP1 of the first VRBs is smaller than the number BWP2 of the second VRBs, and a field length for carrying the indication information of the frequency domain resource allocation is determined according to the BWP 1; determining a resource indication value according to the first BWP; and sending the resource indication value to a user terminal so that the user terminal determines a starting first VRB and a first VRB length distributed in the first BWP, and determines a second VRB distributed in the second BWP according to the corresponding relation. With the above scheme, by determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, and determining the resource indication value according to the first BWP, the user terminal can determine the second VRB allocated in the second BWP with the larger number of VRBs according to the shorter frequency domain resource allocation field corresponding to the first BWP with the smaller number of VRBs, so that when performing cross-BWP scheduling through DCI and when detecting DCI formats in the common search space, the user terminal can schedule the larger number of VRBs for data transmission according to the BWP with the smaller number of VRBs.
Further, by setting the corresponding relation, the number of the second VRBs corresponding to each first VRB is less in difference, which is beneficial to resource management.
Further, the corresponding relation is optimized and simplified by setting the corresponding relation including determining that the second VRB corresponding to the adjacent next first VRB is continuous in value with the second VRB corresponding to the previous first VRB, and the UE only needs to calculate the length of the initial second VRB and the initial second VRB, thereby reducing the calculation amount.
Drawings
Fig. 1 is a schematic diagram of a scenario of determining indication information of frequency domain resource allocation in the prior art;
fig. 2 is a flowchart of a method for sending indication information of frequency domain resource allocation according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a scenario of determining indication information of frequency domain resource allocation according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for sending indication information of frequency domain resource allocation according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an embodiment of the correspondence determining module 41 in fig. 4;
fig. 6 is a flowchart of a method for receiving indication information of frequency domain resource allocation according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an indication information receiving apparatus for frequency domain resource allocation according to an embodiment of the present invention.
Detailed Description
In the prior art, the DCI format includes frequency domain resource allocation for notifying the PDSCH/PUSCH frequency domain resource location used by the user terminal. Currently, two ways, type 0 and Type 1, can be supported. The Type 0 is a mode of indicating a plurality of Resource Block Groups (RBGs) by using a Bitmap (Bitmap), wherein the DCI0_1 and the DCI1_1 can support the Type 0; all DCI formats may support the way resource allocation is indicated by RIV in DCI, so the resource allocation of Type 1 way is also indicated by RIV.
Referring to fig. 1, fig. 1 is a schematic view of a scene of determining indication information of frequency domain resource allocation in the prior art, and specifically, is a schematic view of Tree resource allocation Based on a triangular binary Tree (Tree Based).
Specifically, the binary tree is in the shape of an equilateral triangle, the number of nodes on each side is the same, and the number of the nodes is equal to the number of leaf nodes
The number of Resource Blocks (RBs) or VRBs for the BWP is used to indicate the number of RBs or VRBs corresponding to the BWP that the network can allocate to the UE for scheduling.
For example, as shown by the dotted line in the figure, 3 VRBs are allocated to the UE, and the VRB number is { VRB2, VRB3, VRB4}, then the RIV value configured by the base station for the UE and the VRB set form 1 equilateral triangle, that is, the RIV value is 14 (and VRB2/3/4 form an equilateral triangle). Wherein, the starting VRB allocated for the UE is 2, and the length of the VRB is 3.
Further, the total number of nodes occupied by the triangular binary tree can be obtained as
Each node pair in a binary treeThe desired value is an RIV value and only requires
A single bit (bit) can encode the RIV value. Wherein the content of the first and second substances,
used to indicate rounding up.
In a specific implementation, the RIV value can also be calculated using the following formula:
else
whereL CRBs ≥1and shall not exceed
wherein the content of the first and second substances,
for indicating the number of VRBs in the BWP;
L CRBs for indicating the length of the allocated VRBs, i.e. the length of VRBs consecutively allocated to the UE;
RB start used to indicate the starting VRB.
Further, after the UE receives the RIV value, the RB is calculated start And L CRBs The method of (3) may comprise the steps of:
computing
The value of (b) x;
wherein the content of the first and second substances,
is used to indicate that the rounding is done down,
used to indicate the number of VRBs in the downlink BWP,% is the remainder symbol.
1) If it is not
It can be determined
RB can be obtained by using the following formula start And L CRBs ：
2) If it is not
It can be determined
RB can be obtained by using the following formula start And L CRBs ：
Still further, the UE may determine the PRB from the VRB. VRB n is mapped as PRB n if the higher layer signaling is configured as non-interleaved VRB-to-PRB mapping. If the higher layer signaling is configured to interleave the VRB-to-PRB mapping, the VRB maps to PRBs according to a certain rule.
In a 5G system, each BWP has at least the following characteristics: subcarrier spacing, CP type; frequency domain location and bandwidth length. In order to save power consumption of the terminal, the network may configure a plurality of BWPs with different bandwidth lengths or different mathematical parameters (Numerology) for the UE according to the bandwidth reception capability of the UE, and these BWPs need to be limited within the maximum reception bandwidth range of the UE. The UE/network can adaptively adjust the BWP used according to the service requirement and the load condition of the UE, so as to save the power consumption of the terminal, improve the transmission rate, and improve the user experience.
After the UE completes RRC connection with the network, the network configures one or more BWPs for the UE according to service requirements of the UE, where one of the BWPs is a default BWP. Further, activation of BWP may be performed through RRC signaling or scheduling DCI. In the current R15 version, only one active BWP is supported at the same time, and the scheduling DCI may indicate to transmit data at the current BWP, which is referred to as the present BWP scheduling; it may also indicate that data is transmitted at other BWPs, which is called cross BWP scheduling, and at this time, BWP of scheduled data is activated, and BWP of currently transmitted scheduled DCI is deactivated by default.
However, in the prior art, a problem may occur that the field length for carrying the indication information of the frequency domain resource allocation is not sufficient to indicate the frequency domain resources on the BWP to be scheduled. Specifically, the length of the frequency domain resource allocation field in DCI1_0 may be
The length of the frequency domain resource allocation field in DCI1_1 may be
The length of the frequency domain resource allocation field in DCI0_0 may be
The length of the frequency domain resource allocation field in DCI0_1 may be
Wherein the content of the first and second substances,
the number of VRBs corresponding to the uplink BWP for indicating that the network can allocate to the UE scheduling depends on the current BWP.
The inventors of the present invention have studied to find that when cross-BWP scheduling is performed through DCI (i.e., DCI0_1 or DCI1_ 1), the length of the frequency domain resource allocation field in the DCI format depends on the current BWP, and if data on the wide BWP is currently scheduled for the narrow BWP, the length of the frequency domain resource allocation field is not long enough to indicate frequency domain resources on the wide BWP, and especially when the resource allocation is Type 1, it is difficult to schedule more VRBs for data transmission.
Furthermore, when the common search space detects a DCI format (i.e., DCI1_ 0or DCI0_ 0), the length of the frequency domain resource allocation field depends on the initial BWP, and if the current active BWP is a wide BWP and the initial BWP is a narrow BWP, the length of the frequency domain resource allocation field is not long enough to indicate the frequency domain resources on the active BWP, and it is difficult to schedule more VRBs for data transmission especially when the resource allocation is Type 1. The wide BWP indicates that the number of VRBs in the BWP is large, and the narrow BWP indicates that the number of VRBs in the BWP is small.
In the embodiment of the present invention, a corresponding relationship between each first VRB in a first BWP and a second VRB in a second BWP to be activated is determined, where the number BWP1 of the first VRBs is smaller than the number BWP2 of the second VRBs, and a field length for carrying the indication information of the frequency domain resource allocation is determined according to the BWP 1; determining a resource indication value according to the first BWP; and sending the resource indicated value to a user terminal so that the user terminal determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the corresponding relation. With the above scheme, by determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, and determining the resource indication value according to the first BWP, the user terminal can determine the second VRB allocated in the second BWP with the larger number of VRBs according to the shorter frequency domain resource allocation field corresponding to the first BWP with the smaller number of VRBs, so that when performing cross-BWP scheduling through DCI and when detecting DCI formats in the common search space, the user terminal can schedule the larger number of VRBs for data transmission according to the BWP with the smaller number of VRBs.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 2, fig. 2 is a flowchart of a method for sending indication information of frequency domain resource allocation according to an embodiment of the present invention. The method for sending the indication information of frequency domain resource allocation may be used in a base station, and may further include steps S21 to S23:
step S21: determining a corresponding relation between each first VRB in a first BWP and a second VRB in a second BWP to be activated, wherein the number BWP1 of the first VRB is less than the number BWP2 of the second VRB, and the length of a field for carrying the indication information of the frequency domain resource allocation is determined according to the BWP 1;
step S22: determining a resource indication value according to the first BWP;
step S23: and sending the resource indicated value to a user terminal so that the user terminal determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the corresponding relation.
In the specific implementation of step S21, each first VRB in the first BWP has a corresponding relationship with a second VRB in the second BWP to be activated, that is, according to the corresponding relationship, the second VRB can be determined according to the first VRB.
The number BWP1 of the first VRBs is smaller than the number BWP2 of the second VRBs, and the length of the field for carrying the indication information of the frequency domain resource allocation is determined according to the BWP1, that is, the length of the frequency domain resource allocation field in the DCI is shorter, and the number of the second VRBs allocated in the second BWP is greater, and it is necessary to use a longer frequency domain resource allocation field for indication, and continue to use the scheme in the prior art, and it is difficult to completely indicate the second VRBs by using only the frequency domain resource allocation field.
In a specific implementation of step S22, the RIV is determined from said first BWP.
Specifically, the RIV value may be determined by using a Tree resource allocation diagram Based on a triangular binary Tree (Tree Based), and may also be calculated by using the following formula:
else
wherein the content of the first and second substances,
for indicating the number of first VRBs in the first BWP;
L CRBs for indicating the length of the first VRB in the allocated first VRBs, i.e. the length of the first VRBs consecutively allocated to the UE;
RB start for indicating a starting first VRB among the allocated first VRBs.
In the specific implementation of step S23, the base station sends the RIV to the UE, and the UE may determine the RB according to the RIV start And L CRBs . Specifically, the following steps may be included:
computing
The value of (b) x;
wherein the content of the first and second substances,
is used to indicate that the rounding is to be done down,
used to represent the number of first VRBs in the first BWP,% is a remainder symbol.
1) If it is not
It can be determined
RB can be obtained by using the following formula start And L CRBs ：
2) If it is not
It can be determined
RB can be obtained by using the following formula start And L CRBs ：
Wherein L is CRBs For indicating the length of the first VRB in the allocated first VRBs, i.e. the length of the first VRBs consecutively allocated to the UE; RB (radio B) start For indicating a starting first VRB among the allocated first VRBs.
Further, the UE determines a second VRB allocated in the second BWP according to the corresponding relationship. Specifically, the UE may determine which specific VRBs are included in the second VRBs allocated in the second BWP, and the numbers of the VRBs may be distributed, discontinuous, or continuous.
In a specific implementation manner of the embodiment of the present invention, the second VRB may be configured to contain consecutive VRBs.
Specifically, the determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated may include: determining that first mod (BWP 2, BWP 1) first VRBs in the first BWP correspond to respective ones of the first VRBsA difference in the second BWP
A second VRB; determining that remaining first VRBs in the first BWP correspond to different ones in the second BWP, respectively
A second VRB. Where mod () is used to represent the remainder operation.
More specifically, the remaining first VRBs in the first BWP are min (BWP 1, BWP 2) -mod (BWP 2, BWP 1) first VRBs, that is, BWP1-mod (BWP 2, BWP 1) first VRBs.
Further, the determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated further includes: determining that the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
Specifically, the second VRB corresponding to the first mod (BWP 2, BWP 1) first VRBs in the first BWP includes
And a VRB.
Wherein m1 is more than or equal to 0<mod(BWP2,BWP1)，
And m1 and n1 are integers.
Referring to fig. 3, fig. 3 is a schematic view of a scenario of determining indication information of frequency domain resource allocation according to an embodiment of the present invention.
As shown in fig. 3, the number BWP1 of the first VRBs is 6, and the number BWP2 of the second VRBs is 20. It should be noted that the first VRB may start to count from 0 to 5, and may also start to count from 1 to 6, and the second VRB may start to count from 1 to 20, and may also start to count from 0 to 19. In the embodiment of the present invention, the specific counting manner of the VRBs is not limited.
Further, by a modulo operation mod (20,6) =2, and a ceiling operation
Determining that the first 2 first VRBs in the first BWP correspond to different 4 second VRBs in a second BWP, respectively; by rounding down
It is determined that the remaining (i.e., the last 4) first VRBs in the first BWP correspond to different 3 second VRBs in the second BWP, respectively.
It should be noted that, in an implementation, the first VRB may be further defined as a Resource-block Mapping Group (RMG), the number of RMGs is min (BWP 1, BWP 2), and BWP1< BWP2 may be set, so that the number of RMGs is the number BWP1 of the first VRB.
In the embodiment of the present invention, the corresponding relationship is set through a remainder operation, a ceiling operation, and a ceiling operation, so that the number of the second VRBs corresponding to each first VRB has a smaller difference, for example, only a difference of 1, which is beneficial to resource management. Specifically, as shown in fig. 3, the first 2 first VRBs correspond to a larger number of second VRBs, respectively corresponding to 4 first VRBs, and the second VRBs corresponding to the last 4 first VRBs are a smaller number, respectively corresponding to 3 first VRBs, with a difference of only 1.
Preferably, the second VRBs to which each first VRB corresponds are numerically consecutive.
Preferably, the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
For example, a first VRB of number 1 corresponds to a second VRB of number { VRB5, VRB6, VRB7, VRB8}, and the numbers (VRB 1/2/3/4) of the second VRBs corresponding to the first VRB of number 0 are consecutive; the first VRB of number 2 corresponds to the second VRB of number { VRB9, VRB10, VRB11}, and the numbers (VRB 5/6/7/8) of the second VRBs corresponding to the first VRB of number 1 are consecutive.
In the embodiment of the present invention, the setting of the correspondence includes determining that the second VRB corresponding to the next adjacent first VRB is consecutive in value to the second VRB corresponding to the previous first VRB, so that the correspondence can be optimized and simplified, and the UE only needs to calculate the lengths of the initial second VRB and the initial second VRB, thereby reducing the amount of calculation.
For example, 3 first VRBs are allocated to the UE, and the first VRB number is { VRB2, VRB3, VRB4}, then the RIV value configured by the base station for the UE and the VRB set form 1 equilateral triangle, i.e. the RIV value is 14 (and VRB2/3/4 form an equilateral triangle).
The UE can obtain that the starting VRB of the first VRB is 2 through calculation according to the received RIV value of 14, the length of the VRB is 3 (namely VRB 2/3/4), and further determine that the second VRB is { VRB9 to VRB17} according to the optimized corresponding relation, compared with the situation that the second VRB is discontinuous, the corresponding relation is simplified, and the UE can only calculate the starting second VRB to be VRB9 and calculate the length of the second VRB to be 9, so that the calculation amount is reduced.
In this embodiment of the present invention, before determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, the method further includes: cross-BWP scheduling by DCI is determined, and the second BWP is scheduled by the first BWP.
Specifically, when the second BWP is scheduled by the first BWP, the number of the second VRBs in the second BWP is large because the number of the first VRBs in the first BWP is small, and thus it is difficult to schedule the large number of the second VRBs. By adopting the scheme, the indication information sending method for frequency domain resource allocation in the scheme of the invention is beneficial to being adopted when cross BWP scheduling is carried out through DCI, and has more pertinence.
In this embodiment of the present invention, before determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, the method further includes: determining to detect the DCI format in a common search space, and the initial BWP is the first BWP. Further, the second BWP is the currently active BWP.
Specifically, when the DCI format is detected in the common search space, and the frequency-domain resource allocation field in the DCI format depends on the initial BWP (e.g., the initial downlink BWP), that is, the length of the field for carrying the indication information of the frequency-domain resource allocation is determined according to the initial BWP, since the number of the first VRBs in the initial BWP is smaller, the number of the second VRBs in the currently active BWP is larger, and it is easy to schedule the larger number of the second VRBs. By adopting the scheme, the indication information sending method for frequency domain resource allocation in the scheme of the invention is beneficial to being adopted when the DCI format is detected in the public search space, and has more pertinence.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an apparatus for sending indication information of frequency domain resource allocation according to an embodiment of the present invention. The indication information transmitting apparatus of the frequency domain resource allocation may include:
a correspondence determining module 41 adapted to determine a correspondence of each first VRB in a first BWP to a second VRB in a second BWP to be activated, wherein the number BWP1 of the first VRBs is smaller than the number BWP2 of the second VRBs, and the length of the field for carrying the frequency domain resource allocation is determined according to the BWP 1;
a resource indication value determination module 42 adapted to determine a resource indication value from the first BWP;
a sending module 43, adapted to send the resource indication value to a user equipment, so that the user equipment determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the corresponding relationship.
Further, the apparatus for sending the indication information of the frequency domain resource allocation may further include:
a cross-BWP scheduling determination module 44 adapted to determine to perform cross-BWP scheduling by DCI and schedule a second VRB in a second BWP to be activated before determining a correspondence between each first VRB in the first BWP and the second VRB;
the common search space detection determining module 45 is adapted to determine that the DCI format is detected in the common search space and the initial BWP is the first BWP before determining the correspondence of each first VRB in the first BWP to the second VRB in the second BWP to be activated.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a specific embodiment of the correspondence relation determining module 41 in fig. 4. The correspondence determining module 41 may include:
a first correspondence determination submodule 51 adapted to determine that first mod (BWP 2, BWP 1) first VRBs in the first BWP respectively correspond to different ones of the second BWP
A second VRB;
a second correspondence determination submodule 52 adapted to determine that the remaining first VRBs in the first BWP correspond to different ones of the second BWP, respectively
A second VRB;
the third correspondence determining submodule 53 is adapted to determine that the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
For the principle, specific implementation and beneficial effects of the apparatus for sending indication information on frequency domain resource allocation, please refer to the foregoing and the related descriptions of the method for sending indication information on frequency domain resource allocation shown in fig. 1 to 3, which are not described herein again.
Referring to fig. 6, fig. 6 is a flowchart of a method for receiving indication information of frequency domain resource allocation according to an embodiment of the present invention. The method for receiving the indication information of frequency domain resource allocation may be used for a UE, and may further include steps S61 to S62:
step S61: receiving a resource indication value from a base station, the resource indication value being determined according to a first BWP;
step S62: determining a starting first VRB and a first VRB length distributed in the first BWP according to the resource indicating value, and determining a second VRB distributed in a second BWP according to a corresponding relation; wherein each first VRB in the first BWP has the corresponding relation with a second VRB in a second BWP to be activated, the number BWP1 of the first VRB is smaller than the number BWP2 of the second VRB, and the length of the field for carrying the frequency domain resource allocation is determined according to the BWP1.
Further, the correspondence relationship may include: first mod (BWP 2, BWP 1) of the first BWPVRBs corresponding to differences in the second BWP, respectively
A second VRB; the remaining first VRBs in the first BWP correspond to different ones in the second BWP, respectively
A second VRB.
The correspondence may further include: the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
Further, if the higher layer signaling is configured as non-interleaved VRB-to-PRB mapping, the PRB can be directly obtained by the second VRB. If the higher layer signaling configuration is interleaving VRB-to-PRB mapping, deinterleaving is performed with the deinterleaving related parameters (e.g., VRB-to-PRB-interleaver) configured by the second BWP, so as to obtain a final PRB.
In a specific implementation, please refer to the above description and related descriptions of the indication information transmission method for frequency domain resource allocation shown in fig. 1 to 3 for further details regarding steps S61 to S62, which are not repeated herein.
Fig. 7 is a schematic structural diagram of an indication information receiving apparatus for frequency domain resource allocation according to an embodiment of the present invention. The apparatus for receiving indication information of frequency domain resource allocation may be used for a UE, and may further include:
a receiving module 71 adapted to receive a resource indication value from a base station, said resource indication value being determined according to a first BWP;
a second VRB determination module 72 adapted to determine, according to the resource indication value, a starting first VRB and a first VRB length allocated in the first BWP, and determine, according to a correspondence relationship, a second VRB allocated in a second BWP, where each first VRB in the first BWP has the correspondence relationship with a second VRB in the second BWP to be activated, and the number BWP1 of the first VRBs is smaller than the number BWP2 of the second VRBs, and the length of the field for carrying the frequency domain resource allocation is determined according to the BWP1.
For the principle, specific implementation and beneficial effects of the apparatus for receiving indication information related to frequency domain resource allocation, please refer to the foregoing and the related description of the method for receiving indication information related to frequency domain resource allocation shown in fig. 6, which is not described herein again.
In the embodiment of the present invention, the DCI format for scheduling the PDSCH may include DCI1_0 and DCI1_1, and the DCI format for scheduling the PUSCH may include DCI0_0 and DCI0_1.
Specifically, DCI1_0 may contain the following information:
DCI Format identification (Identifier for DCI formats) - [1]
Frequency domain resource allocation (Frequency domain resource allocation)
-Time domain resource allocation (Time domain resource assignment) -X bits
-VRB-to-PRB mapping (VRB-to-PRB mapping) -1bit
Modulation and coding scheme (Modulation and coding scheme) [5]
-New data indicator (New data indicator) -1bit
Redundant versions (Redundancy version) - [2]
-number of HARQ processes (HARQ process number) - [4]
-Downlink assignment index (Downlink assignment index) -2bits
-TPC commands (TPC command for scheduled PUCCH) - [2] bits for scheduling PUCCH
-PUCCH resource indicator (PUCCH resource indicator) - [2] ]bits
-PDSCH-to-HARQ feedback timing indication (PDSCH-to-HARQ feedback timing indicator) - [3]
Specifically, DCI1_1 may contain the following information:
carrier indicator (Carrier indicator) -0or 3bits.
DCI Format identification (Identifier for DCI formats) - [1]
-fractional Bandwidth indicator (Bandwidth part indicator) -0,1or 2bits
Frequency domain resource allocation (Frequency domain resource allocation) if only resource allocation type 0 is configured
Only resource allocation type 1 is configured
If two resource allocations are configured
Time domain resource allocation (Time domain resource allocation) -1,2,3, or 4bits
-VRB-to-PRB mapping (VRB-to-PRB mapping) -0or 1bit
-PRB bundling size indicator (PRB bundling size indicator) -0or 10 bit
Rate matching indicator (Rate matching indicator) -0,1, or 2bits
-ZP CSI-RS trigger (ZP CSI-RS trigger) -X bits
A transmission block 1:
modulation and coding scheme (5 bits)
-New data indicator (New data indicator) -1bit
Redundant versions (Redundancy version) - [2]
And a transmission block 2:
modulation and coding scheme (5 bits)
-New data indicator (New data indicator) -1bit
Redundant versions (Redundancy version) - [2]
-number of HARQ processes (HARQ process number) -4bits
-Downlink allocation index (Downlink allocation index) -0or 4bits
-TPC commands (TPC command for scheduled PUCCH) - [2] bits for scheduling PUCCH
-PUCCH resource indicator (PUCCH resource indicator) - [2] ]bits
PDSCH-to-HARQ feedback timing indication (PDSCH-to-HARQ feedback timing indicator) -3bits
Antenna port (Antenna ports) -4,5,6 bits
-Transmission configuration indication (Transmission configuration indication) -0 bits or 3bits
-SRS request (SRS request) -2bits
CBG Transmission information (CBG Transmission information) -0,2,4,6, or 8bits
CBG flushing out information-0 or 1bit.
DMRS sequence initialization (DMRS sequence initialization) -0or 1bit
Specifically, DCI0_0 may contain the following information:
DCI Format identification (Identifier for DCI formats) - [1]
Frequency domain resource allocation (Frequency domain resource allocation)
Time domain resource allocation (Time domain resource assignment) -X bits
Frequency-domain hopping flag (Frequency hopping flag) -1bit.
Modulation and coding scheme (5 bits)
-New data indicator (New data indicator) -1bit
Redundant versions (Redundancy version) - [2]
-number of HARQ processes (HARQ process number) - [4]
-Downlink assignment index (Downlink assignment index) -2bits
TPC commands (TPC command for scheduled PUSCH) - [2] bits to schedule PUSCH
UL/SUL indicator (UL/SUL indicator) -0bit if the UE is not SUL-configured, otherwise 1bit
Specifically, DCI0_1 may contain the following information:
carrier indicator (Carrier indicator) -0or 3bits.
DCI Format identification (Identifier for DCI formats) - [1]
-fractional Bandwidth indicator (Bandwidth part indicator) -0,1or 2bits
Frequency domain resource allocation (Frequency domain resource assignment) if only resource allocation type 0 is configured
Only resource allocation type 1 is configured
If two resource allocations are configured
Time domain resource allocation (Time domain resource allocation) -1,2,3, or 4bits
-VRB-to-PRB mapping (VRB-to-PRB mapping) -0or 1bit
Frequency-domain hopping flag (Frequency hopping flag) -0or 1bit
Modulation and coding scheme (5 bits)
-New data indicator (New data indicator) -1bit
Redundancy versions (Redundancy version) - [2]
-number of HARQ processes (HARQ process number) -4bits
-first downlink assignment index (1 st downlink assignment index) -1or 2bits
-first downlink allocation index (2 nd downlink allocation index) -0or 2bits
TPC commands (TPC command for scheduled PUSCH) - [2] bits to schedule PUSCH
SRS resource indicator (SRS resource indicator)
or
bits
Precoding information and number of layers (Precoding information and number of layers) -0,2,3,4,5,6bits
Antenna ports (Antenna ports) -2,3,4,5,6bits
-SRS request (SRS request) -2bits
-CSI request (CSI request) -0,1,2,3,4,5, or 6bits
CBG Transmission information (CBG Transmission information) -0,2,4,6, or 8bits
PTRS-DMRS association-0 or 2bits
-beta _ offset indicator-0 or 2bits
DMRS sequence initialization (DMRS sequence initialization) -0or 1bit
UL/SUL indicator (UL/SUL indicator) -0bit if the UE is not configured with SUL, otherwise 1bit.
Among the above numerical values, a numerical value with [ ] added thereto represents a numerical value not yet determined in the protocol, and a numerical value with [ ] not added thereto represents a numerical value already determined in the protocol.
The embodiment of the present invention further provides a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the method for sending the indication information of the frequency domain resource allocation or the steps of the method for receiving the indication information of the frequency domain resource allocation are executed. The storage medium may be a computer-readable storage medium, and may include, for example, non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may also include optical disks, mechanical hard disks, solid state hard disks, and so on.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes the step of the above-mentioned indication information sending method for frequency domain resource allocation when executing the computer instruction.
The embodiment of the invention also provides a user terminal, which comprises a memory and a processor, wherein the memory is stored with a computer instruction capable of running on the processor, and the processor executes the step of the indication information receiving method for frequency domain resource allocation when running the computer instruction. The terminal can be various terminal devices such as a smart phone and a tablet computer.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (19)
1. A method for sending indication information of frequency domain resource allocation is characterized by comprising the following steps:
determining a corresponding relation between each first VRB in a first BWP and a second VRB in a second BWP to be activated, wherein the number BWP1 of the first VRB is less than the number BWP2 of the second VRB, and the length of a field for carrying the indication information of the frequency domain resource allocation is determined according to the BWP 1;
determining a resource indication value according to the first BWP;
and sending the resource indicated value to a user terminal so that the user terminal determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the corresponding relation.
2. The method of claim 1, wherein the determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated comprises:
determining that first mod (BWP 2, BWP 1) first VRBs in the first BWP correspond to different ones of the second BWP, respectively
A second VRB;
determining that remaining first VRBs in the first BWP correspond to different ones in the second BWP, respectively
A second VRB.
3. The method of claim 2, wherein the determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated further comprises:
determining that the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
4. The method for sending indication information of frequency domain resource allocation according to claim 1, before determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, further comprising:
cross-BWP scheduling by DCI is determined, and the second BWP is scheduled by the first BWP.
5. The method for sending indication information of frequency domain resource allocation according to claim 1, before determining the correspondence between each first VRB in the first BWP and the second VRB in the second BWP to be activated, further comprising:
determining to detect the DCI format in a common search space, and the initial BWP is the first BWP.
6. An apparatus for transmitting indication information of frequency domain resource allocation, comprising:
a correspondence determination module adapted to determine a correspondence of each first VRB in a first BWP to a second VRB in a second BWP to be activated, wherein a number BWP1 of the first VRBs is smaller than a number BWP2 of the second VRBs, and a length of a field for carrying the frequency domain resource allocation is determined according to the BWP 1;
a resource indication value determination module adapted to determine a resource indication value from the first BWP;
a sending module, adapted to send the resource indication value to a user terminal, so that the user terminal determines a starting first VRB and a first VRB length allocated in the first BWP, and determines a second VRB allocated in the second BWP according to the correspondence.
7. The apparatus for sending indication information of frequency domain resource allocation according to claim 6, wherein said correspondence determining module comprises:
a first correspondence determination submodule adapted to determine that first mod (BWP 2, BWP 1) first VRBs in the first BWP respectively correspond to different ones of the second BWP
A second VRB;
a second correspondence determination submodule adapted to determine that remaining first VRBs in the first BWP correspond to different ones of the second BWP, respectively
A second VRB.
8. The apparatus for sending indication information of frequency domain resource allocation according to claim 7, wherein said correspondence determining module further comprises:
and the third corresponding relation determining submodule is suitable for determining that the second VRB corresponding to the adjacent next first VRB is continuous in value with the second VRB corresponding to the previous first VRB.
9. The apparatus for transmitting indication information of frequency domain resource allocation according to claim 6, further comprising:
a cross-BWP scheduling determination module adapted to determine to schedule the cross-BWP through DCI and schedule the second BWP through the first BWP before determining a correspondence of each first VRB in the first BWP to a second VRB in the second BWP to be activated.
10. The apparatus for transmitting indication information of frequency domain resource allocation according to claim 6, further comprising:
a common search space detection determination module adapted to determine that a DCI format is detected in a common search space and an initial BWP is the first BWP before determining a correspondence of each first VRB in the first BWP with a second VRB in a second BWP to be activated.
11. A method for receiving indication information of frequency domain resource allocation is characterized by comprising the following steps:
receiving a resource indication value from a base station, the resource indication value being determined according to a first BWP;
determining a starting first VRB and a first VRB length distributed in the first BWP according to the resource indicating value, and determining a second VRB distributed in a second BWP according to a corresponding relation;
wherein each first VRB in the first BWP has the corresponding relation with a second VRB in a second BWP to be activated, the number BWP1 of the first VRB is smaller than the number BWP2 of the second VRB, and the length of the field for carrying the frequency domain resource allocation is determined according to the BWP1.
12. The method for receiving indication information of frequency domain resource allocation according to claim 11, wherein said corresponding relationship comprises:
first mod (BWP 2, BWP 1) first VRBs in the first BWP respectively correspond to different ones in the second BWP
A second VRB;
the remaining first VRBs in the first BWP correspond to different ones of the second BWP
A second VRB.
13. The method for receiving indication information of frequency domain resource allocation according to claim 12, wherein the correspondence further includes:
the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
14. An apparatus for receiving indication information of frequency domain resource allocation, comprising:
a receiving module adapted to receive a resource indication value from a base station, the resource indication value being determined according to a first BWP;
a second VRB determining module, adapted to determine a starting first VRB and a first VRB length allocated in the first BWP according to the resource indication value, and determine a second VRB allocated in a second BWP according to a corresponding relationship;
wherein each first VRB in the first BWP has the corresponding relation with a second VRB in a second BWP to be activated, the number BWP1 of the first VRB is smaller than the number BWP2 of the second VRB, and the length of the field for carrying the frequency domain resource allocation is determined according to the BWP1.
15. The apparatus for receiving indication information of frequency domain resource allocation according to claim 14, wherein said correspondence relationship comprises:
first mod (BWP 2, BWP 1) first VRBs in the first BWP respectively correspond to different ones in the second BWP
A second VRB;
the remaining first VRBs in the first BWP correspond to different ones of the second BWP
A second VRB.
16. The apparatus for receiving indication information of frequency domain resource allocation according to claim 15, wherein said correspondence relationship further includes:
the second VRB corresponding to the adjacent subsequent first VRB is numerically consecutive with the second VRB corresponding to the previous first VRB.
17. A storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method for transmitting indication information of frequency domain resource allocation according to any one of claims 1 to 5, or perform the steps of the method for receiving indication information of frequency domain resource allocation according to any one of claims 11 to 13.
18. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor executes the computer instructions to perform the steps of the method for transmitting indication information of frequency domain resource allocation according to any one of claims 1 to 5.
19. A user terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor executes the computer instructions to perform the steps of the method for receiving indication information of frequency domain resource allocation according to any one of claims 11 to 13.
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| CN113891463A (en) * | 2020-07-02 | 2022-01-04 | 维沃移动通信有限公司 | Mapping method of PUSCH (physical uplink shared channel) signal, terminal and network side equipment |
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| WO2022027493A1 (en) * | 2020-08-06 | 2022-02-10 | 华为技术有限公司 | Resource allocation method, apparatus and system |
| CN112804757B (en) * | 2020-12-30 | 2023-05-02 | 联想未来通信科技(重庆)有限公司 | Switching method and device of frequency domain resource allocation types and readable storage medium |
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