CN110351845B - Frequency domain resource allocation method, network side equipment and terminal - Google Patents

Frequency domain resource allocation method, network side equipment and terminal Download PDF

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CN110351845B
CN110351845B CN201810300653.XA CN201810300653A CN110351845B CN 110351845 B CN110351845 B CN 110351845B CN 201810300653 A CN201810300653 A CN 201810300653A CN 110351845 B CN110351845 B CN 110351845B
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bandwidth
frequency domain
bandwidth part
resource allocation
domain resource
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CN110351845A (en
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杨拓
胡丽洁
夏亮
侯雪颖
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point

Abstract

The embodiment of the invention provides a frequency domain resource allocation method, network side equipment and a terminal. The embodiment of the invention maps and allocates the bandwidth resource of the target BWP by re-dividing the frequency domain resource allocation granularity of the target BWP through the limited bit number of the frequency domain allocation resource based on the current BWP when the terminal is switched to the target BWP, thereby realizing the full utilization of the frequency domain resource of the target BWP.

Description

Frequency domain resource allocation method, network side equipment and terminal
Technical Field
The present invention relates to the field of mobile communication technologies, and in particular, to a frequency domain resource allocation method, a network side device, and a terminal.
Background
In a fifth generation (5G) new air interface (NR) mobile communication system, one cell on the network side may support a relatively large bandwidth (e.g., 100 MHz), and a terminal (UE) may only support a relatively small operating bandwidth (e.g., 5 MHz) of the large bandwidth. The small Bandwidth Part of the large Bandwidth where the UE operates is referred to as a Bandwidth Part (BWP). From a UE configuration perspective, one or more BWPs may be configured for different UE capabilities. The network side may configure 1 or more BWPs for the UE, and change the BWPs that the UE can operate by activating or deactivating the BWPs.
Currently NR supports configuring multiple BWPs for one UE, but only one BWP is activated at the same time. The UE operates on active BWP, which is active BWP in active state. The base station may indicate, through a BWP indicator in Downlink Control Information (DCI), which active BWP the UE is in for receiving or transmitting data.
Frequency domain resource allocation field in DCI is used to indicate frequency domain resources allocated for UEThere are two frequency domain resource allocation methods: type 0 (discontinuous resource allocation) and type1 (continuous resource allocation). The number of bits of the frequency domain resource allocation depends on the BWP frequency domain bandwidth resource size for data scheduling. For the type1 Resource allocation scheme, the frequency domain Resource allocation field in the DCI includes a Resource Indication Value (RIV) that is based on the bandwidth of the BWP
Figure GDA0003899942220000011
Starting virtual resource block, RB, of frequency domain resources allocated for a UE start And a frequency domain resource block size L continuously allocated for the UE RBs And (6) determining. Specifically, the specific value of RIV can be calculated according to a calculation formula of the relevant standard.
In a scenario where the UE triggered by the DCI performs BWP handover, that is, the new BWP indicated by the BWP indicator in the DCI is not the current BWP where the UE receives the DCI, the bandwidth size of the new BWP may be different from that of the current BWP. But the UE receives the DCI on the current BWP, and the number of bits of the frequency domain resource allocation in the DCI is set according to the bandwidth size of the current BWP. The UE receives the DCI transmitted in the current BWP, and needs to map the DCI to the new BWP according to the RIV value in the frequency domain resource allocation domain to calculate the frequency domain resource allocated to the UE.
For the type1 resource allocation manner, if the number of the physical resource blocks of the new BWP is smaller than the number of the physical resource blocks of the current BWP, the value range of the RIV value of the new BWP does not exceed the value range of the RIV value of the current BWP, and the complete resource allocation to the UE on the new BWP can be achieved based on the size of the frequency domain resource allocation domain of the DCI of the current BWP. However, when the number of physical resource blocks of the new BWP is greater than the number of physical resource blocks of the current BWP, the RIV range of the new BWP is greater than the RIV range of the RIV value of the current BWP, and the number of bits in the frequency domain resource allocation domain in the DCI is determined by the bandwidth size of the current BWP, so when the RIV value is mapped to the new BWP, the frequency domain resources of only a part of the bandwidth in the new BWP may be allocated, and the entire frequency domain resources of the new BWP may not be allocated sufficiently.
For example, assume that the RIV value ranges from 0 to 59 for the current BWP with 15kHz subcarrier spacing and 10MHz bandwidth, and the range of PRBs that can be scheduled by the RIV value of 0 to 59 for the new BWP with 15kHz subcarrier spacing and 100MHz bandwidth is only 1 PRB (different starting PRB positions).
Therefore, in the above situation, how to map and allocate the bandwidth resource of the target BWP by using the limited number of bits of the frequency domain allocation resource based on the current BWP when the UE switches to the target BWP becomes a problem to be solved.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a frequency domain resource allocation method, a network side device and a terminal, which are used to map and allocate bandwidth resources of a target BWP by using the limited number of bits of frequency domain allocation resources based on the current BWP when the terminal switches to the target BWP, so as to fully utilize the frequency domain resources of the target BWP.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for allocating frequency domain resources, including:
determining a first allocated portion of a first bandwidth portion and a first frequency domain resource allocation granularity, wherein when the number of physical resource blocks of the first bandwidth portion is greater than the number of physical resource blocks of a second bandwidth portion, the first allocated portion of the first bandwidth portion is not more than a second allocated portion of the second bandwidth portion, the first bandwidth portion is a target bandwidth portion for terminal handover, and the second bandwidth portion is a currently activated bandwidth portion of the terminal;
calculating to obtain a value of a resource indicated value according to the frequency domain resource allocated by the terminal in the first bandwidth part and the first frequency domain resource allocation granularity;
and sending downlink control information for indicating the terminal to switch the bandwidth part, wherein the downlink control information comprises the resource indication value.
The embodiment of the invention also provides another method for allocating frequency domain resources, which comprises the following steps:
receiving downlink control information for indicating the terminal to switch the bandwidth part, wherein the downlink control information comprises a resource indicated value;
determining a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein when the number of physical resource blocks of the first bandwidth part is greater than the number of physical resource blocks of a second bandwidth part, the first allocated portion of the first bandwidth part is not more than a second allocated portion of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal;
and determining the frequency domain resources allocated by the terminal in the first bandwidth part according to the first frequency domain resource allocation granularity and the resource indication value.
An embodiment of the present invention further provides a network side device, including:
a processor configured to determine a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein the first allocated portion of the first bandwidth part is not more than a second allocated portion of a second bandwidth part when a number of physical resource blocks of the first bandwidth part is greater than a number of physical resource blocks of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; calculating to obtain a value of a resource indicated value according to the frequency domain resource allocated by the terminal in the first bandwidth part and the first frequency domain resource allocation granularity;
a transceiver, configured to send a downlink control information for instructing the terminal to perform a bandwidth portion switching, where the downlink control information includes the resource indication value.
An embodiment of the present invention further provides a terminal, including:
a transceiver, configured to receive downlink control information for instructing the terminal to perform bandwidth partial handover, where the downlink control information includes a resource indication value;
a processor configured to determine a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein the first allocated portion of the first bandwidth part is not more than a second allocated portion of a second bandwidth part when a number of physical resource blocks of the first bandwidth part is greater than a number of physical resource blocks of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; and determining the frequency domain resources allocated by the terminal in the first bandwidth part according to the first frequency domain resource allocation granularity and the resource indication value.
An embodiment of the present invention further provides a communication device, including: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for allocating frequency domain resources as described above
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the method for allocating frequency domain resources as described above are implemented.
Compared with the prior art, the frequency domain resource allocation method, the network side device and the terminal provided by the embodiment of the invention map and allocate the bandwidth resource of the target BWP by the limited number of bits of the frequency domain allocation resource based on the current BWP when the terminal is switched to the target BWP, so as to fully utilize the frequency domain resource of the target BWP.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a flowchart of a method for allocating frequency domain resources according to an embodiment of the present invention;
fig. 2 is another flowchart of a method for allocating frequency domain resources according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 6 is another schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In a scenario that a terminal switches a currently activated BWP, assuming that the currently activated BWP of the terminal is a secondary bandwidth part (secondary BWP), a target BWP for switching is a primary bandwidth part (primary BWP), and a frequency domain resource allocation manner of the terminal is a continuous resource allocation manner (type 1), if the number of physical resource blocks of the primary bandwidth part is greater than the number of physical resource blocks of the secondary bandwidth part, the number of bits in a frequency domain resource allocation region in DCI may be determined by the bandwidth size of the primary bandwidth part because the value range of the RIV of the primary bandwidth part is greater than the value range of the RIV value of the current BWP (i.e., the secondary bandwidth part), and thus when the RIV value is mapped to the primary bandwidth part, the frequency domain resources of only a part of the primary bandwidth part may be allocated, and all the frequency domain resources of the primary bandwidth part cannot be allocated sufficiently.
In order to solve the above problem, the embodiment of the present invention re-divides the frequency domain resource allocation granularity of the target BWP, so that when the terminal switches to the target BWP, the bandwidth resource of the target BWP can be mapped and allocated by the limited number of bits of the frequency domain allocation resource based on the current BWP, thereby achieving the full utilization of the frequency domain resource of the target BWP.
The method for allocating frequency domain resources provided in the embodiments of the present invention is applied to a network side device, where the network side device may be a Base Station (e.g., a Base Station device in an NR system), and specifically may be a Macro Base Station (Macro Base Station), a micro Base Station (Pico Base Station), a Node B (the name of a 3G mobile Base Station), an enhanced Base Station (eNB), a gNB, a Home enhanced Base Station (Femto eNB or Home eNode B or Home eNB or HeNB), a relay Station, an access point, an RRU (Remote Radio Unit, a Remote Radio module), an RRH (Remote Radio Head, radio Remote Radio Head), a network side Node in a 5G mobile communication system, such as a gNB, a Central Unit (CU, central Unit), or a Distributed Unit (DU, distributed Unit), and the like.
Referring to fig. 1, a method for allocating frequency domain resources according to an embodiment of the present invention, when applied to a network device, includes:
step 11, determining a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein when the number of physical resource blocks of the first bandwidth part is greater than the number of physical resource blocks of a second bandwidth part, the first allocated portion of the first bandwidth part is not more than a second allocated portion of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal.
Here, the network side device may instruct the terminal to perform the switching of the bandwidth part through Downlink Control Information (DCI) when it is required to switch the currently activated bandwidth part of the terminal, for example, to switch from the second bandwidth part to the first bandwidth part. The network side device may detect that the bandwidth part indicated by the BWP indicator is not the bandwidth part currently activated by the terminal after the terminal receives the DCI in the new BWP (i.e., the first bandwidth part) indicated in the BWP indicator in the downlink control information, and switch to the first bandwidth part according to the BWP indicator.
The frequency domain resource allocation granularity of the bandwidth part refers to the granularity corresponding to each bandwidth resource when the bandwidth part is divided into a plurality of continuous and non-overlapping bandwidths. The granularity of frequency-domain resource allocation of the bandwidth part in the prior art is usually one Physical Resource Block (PRB). In the embodiment of the present invention, the first bandwidth part may be divided into a plurality of bandwidth resources with the same or different or not identical sizes, and therefore, the first frequency domain resource allocation granularity corresponding to each bandwidth resource may be the same or different or not identical.
In this embodiment of the present invention, the downlink control information includes a bandwidth part indicator, and a bandwidth part indicated by the bandwidth part indicator is the first bandwidth part. The downlink control information may further include a frequency domain resource allocation domain, where the frequency domain resource allocation domain carries a resource indication value. In the embodiment of the present invention, a frequency domain resource allocation scheme of a continuous resource allocation scheme (type 1) is adopted. When the number of physical resource blocks of the first bandwidth part is greater than the number of physical resource blocks of the second bandwidth part, the first allocated share of the first bandwidth part is not more than the second allocated share of the second bandwidth part, so that the frequency domain resource allocation capable of covering the first bandwidth part is based on the RIV value of the second bandwidth part.
And step 12, calculating to obtain a value of a resource indicated value according to the frequency domain resource allocated by the terminal in the first bandwidth part and the first frequency domain resource allocation granularity.
Here, when calculating the resource indication value, the embodiment of the present invention may refer to the calculation manner in the relevant standard, and is not described herein again for saving space.
Step 13, sending a downlink control information for instructing the terminal to perform the bandwidth part switching, wherein the downlink control information includes the resource indicated value.
Here, the network side device sends the downlink control information to the terminal on the second bandwidth part, the downlink control information includes a bandwidth part indicator, and the bandwidth part indicated by the bandwidth part indicator is the first bandwidth part. In addition, the downlink control information further includes the resource indication value calculated in step 12, so that the terminal determines the frequency domain resource allocated by the terminal in the first bandwidth part according to the resource indication value and the first frequency domain resource allocation granularity.
Through the above steps, the embodiment of the present invention sends, on the second bandwidth part, downlink control information indicating that the terminal is switched to the first bandwidth part, where the downlink control information carries a resource indication value, and because the first allocated portion of the first bandwidth part is not more than the second allocated portion of the second bandwidth part at the first frequency domain resource allocation granularity, when the terminal is switched to the first bandwidth part, the embodiment of the present invention may map and allocate bandwidth resources of the first bandwidth part by using a limited number of bits of frequency domain allocation resources based on the second bandwidth part, thereby achieving sufficient utilization of frequency domain resources of the first bandwidth part.
Two specific determination manners of the first frequency domain resource allocation granularity, which may be adopted in step 11 when the second frequency domain resource allocation granularity of the second bandwidth portion is the same, are described below, and it should be noted that these determination manners are only partial manners that may be adopted by the embodiments of the present invention, and are not limited to the present invention, and any manner that the first allocation fraction of the first bandwidth portion is not more than the second allocation fraction of the second bandwidth portion at the first frequency domain resource allocation granularity may be applied to the present invention.
The method I comprises the following steps:
a) And calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part, and rounding up to obtain a first multiple.
b) And calculating the ratio of the number of the physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first allocated portion of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource allocation granularity.
c) And according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
The size of each bandwidth resource is the frequency domain resource allocation granularity corresponding to the bandwidth resource. Here, the first bandwidth part may be divided in various ways, and the first frequency domain resource allocation granularities obtained by the final division may be all the same or different or not identical (i.e., partially the same, partially different).
As a preferred embodiment, a default partitioning rule may be predefined on the network side and the terminal side, and then when the first bandwidth part is partitioned into multiple contiguous and non-overlapping bandwidth resources according to the first allocation number, and a first frequency domain resource allocation granularity corresponding to each bandwidth resource is determined, the network side device may determine, according to the predefined partitioning rule, that a first frequency domain resource allocation granularity corresponding to a last bandwidth resource in the first allocation number is a second granularity k 12 And the first frequency domain resource allocation granularity corresponding to each remaining bandwidth resource is the first granularity; wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated portion.
Assuming a second frequency-domain resource allocation granularity k for a second bandwidth portion 2 Each of which is 1 Physical Resource Block (PRB). Network side equipment, e.g. base station, based on physical resources of the first bandwidth partCalculating the relative size of the block number relative to the physical resource block number of the second bandwidth part, calculating the ratio of the physical resource block number of the first bandwidth part to the physical resource block number of the second bandwidth part, and rounding up to obtain a first multiple
Figure GDA0003899942220000081
Wherein
Figure GDA0003899942220000082
The number of physical resource blocks of the first bandwidth part,
Figure GDA0003899942220000083
the number of physical resource blocks of the second bandwidth part. At this time, the first granularity is
Figure GDA0003899942220000084
A PRB.
When calculating the first distribution fraction, calculating the ratio of the first bandwidth part to the first granularity and rounding up to obtain the first distribution fraction
Figure GDA0003899942220000085
Dividing the first bandwidth part into
Figure GDA0003899942220000086
And (4) sharing bandwidth resources. In particular, if
Figure GDA0003899942220000087
Can divide k completely 11 The first frequency domain resource allocation granularity of each bandwidth resource is the first granularity; if the whole division can not be performed, then
Figure GDA0003899942220000088
The resource allocation granularity of the shares is a first granularity, and the first frequency domain resource allocation granularity of the last share of bandwidth resources is a second granularity k 12 I.e. by
Figure GDA0003899942220000089
A PRB.
The first frequency domain resource allocation granularity above, i.e. the first granularity k, is determined 11 And a second granularity k 12 Thereafter, in step 12 above, the base station may calculate the RIV value and carry it in the frequency domain resource allocation domain bits in the DCI of the second bandwidth part.
After receiving the DCI in the second bandwidth part, the terminal determines the frequency domain resources in the first bandwidth part allocated to it by the network side device by decoding the RIV value (assumed as the first numerical value) in the DCI and then mapping the RIV value onto the first bandwidth part.
The specific mapping mode is that the terminal calculates to obtain the initial virtual resource block RB corresponding to the RIV value according to the similar mode of the existing standard start (e.g., offset) and at least one bandwidth resource allocated continuously, and then starting the virtual resource block RB corresponding to the RIV value start Multiplied by a first multiple
Figure GDA0003899942220000091
Obtaining the starting allocation position on the first bandwidth part, that is, the starting virtual resource block position of the terminal on the first bandwidth part is
Figure GDA0003899942220000092
The size of the continuous resource block allocated by the terminal may be obtained by accumulating and calculating at least one continuously allocated bandwidth resource according to the first frequency domain resource allocation granularity of each bandwidth resource.
For example, if the second bandwidth part bandwidth is 10 PRBs, the second frequency-domain resource allocation granularity is 1 PRB, and the first bandwidth part bandwidth is 15 PRBs, the first resource allocation granularity for the first bandwidth part is 2 PRBs, and the frequency-domain resources of the first bandwidth part are to be divided into 8 bandwidth resources, where there are 2 PRBs in each of the first 7 bandwidth resources (first granularity), and there are only 1 PRB in the 8 th resource allocation (second granularity). The RIV value is calculated from the 8 resource allocation fraction, which the UE maps onto the first bandwidth part after decoding the DCI.
The second method comprises the following steps:
and directly taking the second allocated portion of the second bandwidth part as the first allocated portion of the first bandwidth part, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources according to the first allocated portion, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource, wherein the first frequency domain resource allocation granularities corresponding to each bandwidth resource are the same or different or not completely the same.
As a preferred implementation of the second method, a ratio of the number of physical resource blocks of the first bandwidth part to the number of physical resource blocks of the second bandwidth part may be calculated and rounded up to obtain a first multiple
Figure GDA0003899942220000093
Wherein the content of the first and second substances,
Figure GDA0003899942220000094
the number of physical resource blocks of the first bandwidth part,
Figure GDA0003899942220000095
the number of physical resource blocks of the second bandwidth part.
Assuming that the second frequency domain resource allocation granularities of the second bandwidth part are all k 2 Then, the first granularity of frequency domain resource allocation of the first bandwidth portion includes two granularities, respectively k 0 k 2 And (k) 0 -1)k 2 Wherein the particle size is k 0 k 2 The number of the bandwidth resources is x, and the granularity is (k) 0 -1)k 2 The number of the bandwidth resources is y, and the following formula is satisfied:
Figure GDA0003899942220000101
for example, a second frequency domain resource allocation granularity k at a second bandwidth portion 2 When all are 1 PRB, the above formula can be simplified as:
Figure GDA0003899942220000102
the first frequency domain resource allocation granularity of the first bandwidth portion may be calculated by the above formula. In addition, the specific locations of the x and y bandwidth resources may be set according to the prior convention of the network side device and the terminal side, for example, the first x parts are set as the granularity k 0 k 2 The last y parts are set as particle size (k) 0 -1)k 2 。
Preferably, the first frequency domain resource allocation granularity is k 0 k 2 Is located at the position of the sub-carrier with lower frequency, the first frequency domain resource allocation granularity is (k) 0 -1)k 2 The bandwidth resource of (2) is located at the position of the subcarrier with higher frequency; that is, the first frequency domain resource allocation granularity is k 0 k 2 Is lower than the first frequency domain resource allocation granularity of (k) 0 -1)k 2 Is located at the frequency of the sub-carrier position.
Or the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (a) is located at the position of the subcarrier with higher frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Is located at the position of the sub-carrier with lower frequency. That is, the first frequency domain resource allocation granularity is k 0 k 2 Higher than the first frequency domain resource allocation granularity of (k) 0 -1)k 2 The bandwidth resource of (2) is located at the frequency of the sub-carrier position.
In the second mode, the first frequency-domain resource allocation granularity of the first bandwidth part is redefined, and the first bandwidth part is divided according to the defined frequency-domain resource allocation granularity, so that the first allocated portion of the bandwidth resources of the first bandwidth part after being subdivided is the same as the second allocated portion of the bandwidth resources of the second bandwidth part. The first frequency-domain resource allocation granularities of the newly defined first bandwidth part partitions may be the same as each other or different from each other. The network side device and the terminal obtain the division mode of the first bandwidth part in advance, and specifically, the division mode can be predefined in a standard protocol and configured on the network side device and the terminal side, or the network side device configures the division mode and notifies the division mode to the terminal in advance. The division mode comprises a first frequency domain resource allocation granularity and a first allocation part of each bandwidth resource.
Then, the network side device calculates the RIV value according to the first allocated number of copies of the first bandwidth part. After the terminal receives the DCI carrying the RIV value on the second bandwidth part, the terminal performs resource mapping according to the newly defined first frequency domain resource allocation granularity and the first allocated number on the first bandwidth part, and the specific processing manner is similar to that in the first manner, so as to obtain the frequency domain resource range scheduled by the network side device for the terminal.
For example, the second bandwidth part is 10 PRBs, the first bandwidth part is 15 PRBs, the 15 PRBs of the first bandwidth part are divided into 10 parts, and a method of dividing the 15 PRBs of the first bandwidth part may be defined in a protocol, for example, the first 5 parts of bandwidth resources, the first frequency domain resource granularity in each part is 1 PRB, the last 5 parts of bandwidth resources, and the frequency domain resource granularity in each part is 2 PRBs. RIV values are calculated from the 10 re-divided frequency domain allocation resources, which the terminal maps onto the first bandwidth portion after decoding the DCI.
From the foregoing, it can be seen that the foregoing method according to the embodiment of the present invention provides an indication scheme for resource allocation of a resource allocation type1 in a BWP handover scenario, and implements a size of a frequency domain resource allocation field in DCI based on a second bandwidth part by re-dividing a frequency domain resource allocation granularity of the first bandwidth part, so as to fully schedule a frequency domain resource range of the first bandwidth part.
Referring to fig. 2, a method for allocating frequency domain resources according to an embodiment of the present invention, when applied to a terminal, includes:
step 21, receiving a downlink control information for instructing the terminal to perform the bandwidth part switching, where the downlink control information includes a resource indication value.
Here, the downlink control information may further include a bandwidth part indicator, and the bandwidth part indicated by the bandwidth part indicator is the first bandwidth part. The terminal determines that the switching of the bandwidth part is required when the first bandwidth part indicated by the bandwidth part indicator is different from the second bandwidth part currently activated by the terminal.
Here, the downlink control information may further include a frequency domain resource allocation region, the resource indication value is carried in the frequency domain resource allocation region, and the frequency domain resource allocation manner is a continuous resource allocation manner.
Step 22, determining a first allocated portion of a first bandwidth portion and a first frequency domain resource allocation granularity, wherein when the number of physical resource blocks of the first bandwidth portion is greater than the number of physical resource blocks of a second bandwidth portion, the first allocated portion of the first bandwidth portion is not greater than a second allocated portion of the second bandwidth portion, the first bandwidth portion is a target bandwidth portion for terminal handover, and the second bandwidth portion is a currently activated bandwidth portion of the terminal.
Step 23, determining the frequency domain resources allocated by the terminal in the first bandwidth part according to the first frequency domain resource allocation granularity and the resource indicated value.
Here, the terminal may calculate, according to a calculation method of an existing standard, a starting resource position corresponding to the resource indication value and at least one bandwidth resource that is continuously allocated. Then, the initial resource position corresponding to the resource indication value is obtained according to the first frequency domain resource allocation granularity, the initial position of the frequency domain resource allocated by the terminal in the first bandwidth part is obtained, at least one continuously allocated bandwidth resource is accumulated according to the first frequency domain resource allocation granularity of each bandwidth resource, and the size of the frequency domain resource allocated by the terminal in the first bandwidth part is obtained through calculation.
Through the above steps, the embodiment of the present invention re-divides the frequency domain resource allocation granularity of the first bandwidth portion, implements the size of the frequency domain resource allocation domain in the DCI based on the second bandwidth portion, and can fully schedule the frequency domain resource range of the first bandwidth portion.
When the first frequency domain resource allocation granularity determining method described in the above first mode is adopted, in step 22, the terminal may calculate a ratio of the number of physical resource blocks of the first bandwidth part to the number of physical resource blocks of the second bandwidth part and rounded up to obtain a first multiple; calculating the ratio of the number of physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first allocated portion of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource allocation granularity; and according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
As an implementation manner, a default partitioning rule may be predefined on a network side and a terminal side, and then when the first bandwidth part is partitioned into multiple contiguous and non-overlapping bandwidth resources according to the first allocation part and a first frequency domain resource allocation granularity corresponding to each bandwidth resource is determined, the terminal may determine, according to the predefined partitioning rule, that a first frequency domain resource allocation granularity corresponding to a last bandwidth resource in the first allocation part is a second granularity k 12 And the first frequency domain resource allocation granularity corresponding to each remaining bandwidth resource is the first granularity; wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated portion.
When the manner of determining the first frequency domain resource allocation granularity is described in the foregoing second manner, in step 22, the terminal may determine each bandwidth resource included in the first bandwidth part and the first frequency domain resource allocation granularity thereof according to a pre-obtained dividing manner of the first bandwidth part, where in the dividing manner, a second allocated portion of the second bandwidth part is the same as a first allocated portion of the first bandwidth part, and first frequency domain resource allocation granularities corresponding to each bandwidth resource are the same or different or not completely the same.
The network side device and the terminal obtain the dividing mode of the first bandwidth part in advance, and specifically, the dividing mode may be predefined in a standard protocol and configured at the network side device and the terminal side, or the network side device configures the dividing mode and notifies the dividing mode to the terminal in advance. The division mode comprises a first frequency domain resource allocation granularity and a first allocation part of each bandwidth resource.
As an implementation manner, the terminal directly uses the second allocated portion of the second bandwidth portion as the first allocated portion of the first bandwidth portion, and divides the first bandwidth portion into multiple contiguous and non-overlapping bandwidth resources according to the first allocated portion, and determines a first frequency domain resource allocation granularity corresponding to each bandwidth resource, where the first frequency domain resource allocation granularities corresponding to each bandwidth resource are the same or all different or not completely the same.
Based on the method, the embodiment of the invention also provides equipment for implementing the method.
Referring to fig. 3, an embodiment of the present invention provides a network side device, as shown in fig. 3, the network side device 30 includes a processor 31 and a transceiver 32. Wherein, the first and the second end of the pipe are connected with each other,
a processor 31, configured to determine a first allocated fraction of a first bandwidth part and a first frequency domain resource allocation granularity, wherein the first allocated fraction of the first bandwidth part is not more than a second allocated fraction of a second bandwidth part when a number of physical resource blocks of the first bandwidth part is greater than a number of physical resource blocks of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; calculating to obtain a value of a resource indicated value according to the frequency domain resource allocated by the terminal in the first bandwidth part and the first frequency domain resource allocation granularity;
a transceiver 32, configured to send downlink control information for instructing the terminal to perform bandwidth part switching, where the downlink control information includes the resource indication value.
Preferably, the processor 31 is specifically configured to calculate a ratio of the number of physical resource blocks of the first bandwidth part to the number of physical resource blocks of the second bandwidth part, and round the ratio upwards to obtain a first multiple; calculating the ratio of the number of the physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first distribution part of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource distribution granularity; and according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
Preferably, the processor 31 is specifically configured to determine that a first frequency domain resource allocation granularity corresponding to a last bandwidth resource in the first allocated portion is a second granularity k 12 And the first frequency domain resource allocation granularity corresponding to each remaining bandwidth resource is the first granularity;
wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated fraction.
Preferably, the processor 31 is specifically configured to use the second allocated portion of the second bandwidth part as the first allocated portion of the first bandwidth part, divide the first bandwidth part into multiple contiguous and non-overlapping bandwidth resources according to the first allocated portion, and determine a first frequency domain resource allocation granularity corresponding to each bandwidth resource, where the first frequency domain resource allocation granularities corresponding to each bandwidth resource are the same or different or not completely the same.
Preferably, the processor 31 is specifically configured to calculate a ratio of the number of physical resource blocks of the first bandwidth part to the number of physical resource blocks of the second bandwidth part, and round the ratio upwards to obtain a first multiple
Figure GDA0003899942220000141
Figure GDA0003899942220000142
Wherein, the first and the second end of the pipe are connected with each other,
Figure GDA0003899942220000143
the number of physical resource blocks of the first bandwidth part,
Figure GDA0003899942220000144
the number of physical resource blocks of the second bandwidth part.
The first granularity of frequency domain resource allocation for determining the first bandwidth part comprises two granularities, respectively k 0 k 2 And (k) 0 -1)k 2 Wherein k is 2 Allocating a granularity for a second frequency domain resource of a second bandwidth portion;
according to the following formula, the following formula is adopted,
Figure GDA0003899942220000145
calculating to obtain a first frequency domain resource allocation granularity k 0 k 2 X, and a first frequency domain resource allocation granularity of (k) 0 -1)k 2 Y, of the bandwidth resource.
Here, the first frequency domain resource allocation granularity is k 0 k 2 Is located at the position of the sub-carrier with lower frequency, the first frequency domain resource allocation granularity is (k) 0 -1)k 2 The bandwidth resource of (a) is located at a subcarrier position with higher frequency; alternatively, the first and second electrodes may be,
the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (a) is located at the position of the subcarrier with higher frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Is located at a lower frequency sub-carrier position.
Here, the downlink control information further includes a bandwidth part indicator, and the bandwidth part indicated by the bandwidth part indicator is the first bandwidth part. The downlink control information comprises a frequency domain resource allocation domain, the resource indication value is carried in the frequency domain resource allocation domain, and the frequency domain resource allocation mode is a continuous resource allocation mode.
Referring to fig. 4, another schematic structural diagram of a network device 400 according to an embodiment of the present invention includes: a processor 401, a transceiver 402, a memory 403, and a bus interface, wherein:
in this embodiment of the present invention, the network side device 400 further includes: a computer program stored in a memory 403 and executable on a processor 401, the computer program when executed by the processor 401 performing the steps of: determining a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein when the number of physical resource blocks of the first bandwidth part is greater than the number of physical resource blocks of a second bandwidth part, the first allocated portion of the first bandwidth part is not more than a second allocated portion of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; calculating to obtain a value of a resource indicated value according to the frequency domain resource allocated by the terminal in the first bandwidth part and the first frequency domain resource allocation granularity; and sending downlink control information for indicating the terminal to switch the bandwidth part, wherein the downlink control information comprises the resource indication value.
In FIG. 4, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 401, and various circuits, represented by memory 403, 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 402 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.
The processor 401 is responsible for managing the bus architecture and general processing, and the memory 403 may store data used by the processor 401 in performing operations.
Optionally, the computer program when executed by the processor 401 may further implement the steps of:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple;
calculating the ratio of the number of physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first allocated portion of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource allocation granularity;
and according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
Optionally, the computer program when executed by the processor 401 may further implement the steps of:
determining a first frequency domain resource allocation granularity corresponding to a last bandwidth resource in the first allocated portion as a second granularity k 12 And, the first frequency domain resource allocation granularity corresponding to each remaining bandwidth resource is the first granularity;
wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated portion.
Optionally, the computer program when executed by the processor 401 may further implement the steps of:
and dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources according to the first allocation part, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource, wherein the first frequency domain resource allocation granularity corresponding to each bandwidth resource is the same or different or not completely the same.
Optionally, the computer program when executed by the processor 401 may further implement the steps of:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple
Figure GDA0003899942220000161
Wherein, the first and the second end of the pipe are connected with each other,
Figure GDA0003899942220000162
the number of physical resource blocks of the first bandwidth part,
Figure GDA0003899942220000163
the number of physical resource blocks of the second bandwidth part.
The first granularity of frequency domain resource allocation for determining the first bandwidth part comprises two granularities, respectively k 0 k 2 And (k) 0 -1)k 2 Wherein k is 2 Allocating a granularity for a second frequency domain resource of a second bandwidth portion;
according to the following formula, the following formula is adopted,
Figure GDA0003899942220000164
calculating to obtain a first frequency domain resource allocation granularity k 0 k 2 X, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Y, of the bandwidth resource.
Here, the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (c) is located at the position of the subcarrier with lower frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 The bandwidth resource of (a) is located at a subcarrier position with higher frequency; alternatively, the first and second electrodes may be,
the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (a) is located at the position of the subcarrier with higher frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Is located at a lower frequency sub-carrier position.
Here, the downlink control information further includes a bandwidth part indicator, and a bandwidth part indicated by the bandwidth part indicator is the first bandwidth part. The downlink control information comprises a frequency domain resource allocation domain, the resource indication value is carried in the frequency domain resource allocation domain, and the frequency domain resource allocation mode is a continuous resource allocation mode.
Referring to fig. 5, an embodiment of the present invention provides a terminal 50, including:
a transceiver 51, configured to receive downlink control information indicating that the terminal performs bandwidth part switching, where the downlink control information includes a resource indication value;
a processor 52, configured to determine a first allocated fraction of a first bandwidth part and a first frequency domain resource allocation granularity, wherein the first allocated fraction of the first bandwidth part is not more than a second allocated fraction of a second bandwidth part when a number of physical resource blocks of the first bandwidth part is greater than a number of physical resource blocks of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; and determining the frequency domain resources allocated by the terminal in the first bandwidth part according to the first frequency domain resource allocation granularity and the resource indication value.
Preferably, the processor 52 is further configured to calculate a ratio of the number of physical resource blocks of the first bandwidth part to the number of physical resource blocks of the second bandwidth part, and round the ratio upwards to obtain a first multiple; calculating the ratio of the number of the physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first distribution part of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource distribution granularity; and according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
Preferably, the processor 52 is further configured to determine that the first frequency-domain resource allocation granularity corresponding to the last bandwidth resource in the first allocated portion is a second granularity k 12 And the first frequency domain resource allocation granularity corresponding to each remaining bandwidth resource is the first granularity; wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated portion.
Preferably, the processor 52 is further configured to determine each bandwidth resource included in the first bandwidth part and a first frequency domain resource allocation granularity thereof according to a pre-obtained partitioning manner of the first bandwidth part, where in the partitioning manner, a second allocated portion of a second bandwidth part is the same as the first allocated portion of the first bandwidth part, and first frequency domain resource allocation granularities corresponding to each bandwidth resource are the same or different or not completely the same.
Preferably, the processor 52 is further configured to calculate a ratio of the number of physical resource blocks of the first bandwidth part to the number of physical resource blocks of the second bandwidth part, and round the ratio upwards to obtain a first multiple
Figure GDA0003899942220000171
Figure GDA0003899942220000172
Wherein the content of the first and second substances,
Figure GDA0003899942220000173
the number of physical resource blocks of the first bandwidth part,
Figure GDA0003899942220000174
the number of physical resource blocks of the second bandwidth part.
The first granularity of frequency domain resource allocation for determining the first bandwidth part comprises two granularities, respectively k 0 k 2 And (k) 0 -1)k 2 Wherein k is 2 Allocating a granularity for a second frequency domain resource of a second bandwidth portion;
according to the following formula, the following formula is adopted,
Figure GDA0003899942220000181
calculating to obtain a first frequency domain resource allocation granularity k 0 k 2 X, and a first frequency domain resource allocation granularity of (k) 0 -1)k 2 Number of bandwidth resources ofy。
Here, the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (c) is located at the position of the subcarrier with lower frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 The bandwidth resource of (2) is located at the position of the subcarrier with higher frequency; alternatively, the first and second liquid crystal display panels may be,
the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (c) is located at the position of the subcarrier with higher frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Is located at a lower frequency sub-carrier position.
Here, the downlink control information further includes a bandwidth part indicator, and a bandwidth part indicated by the bandwidth part indicator is the first bandwidth part. The downlink control information comprises a frequency domain resource allocation domain, the resource indication value is carried in the frequency domain resource allocation domain, and the frequency domain resource allocation mode is a continuous resource allocation mode.
Preferably, the processor 52 is further configured to calculate a starting resource position corresponding to the resource indication value and at least one bandwidth resource that is continuously allocated; and according to the first frequency domain resource allocation granularity of each bandwidth resource, accumulating at least one continuously allocated part of bandwidth resources, and calculating to obtain the size of the frequency domain resources allocated by the terminal in the first bandwidth part.
Referring to fig. 6, another structure of a terminal according to an embodiment of the present invention is that the terminal 600 includes: a processor 601, a transceiver 602, a memory 603, a user interface 604, and a bus interface, wherein:
in this embodiment of the present invention, the terminal 600 further includes: a computer program stored in the memory 603 and executable on the processor 601, the computer program when executed by the processor 601 performing the steps of: receiving downlink control information for indicating the terminal to switch the bandwidth part, wherein the downlink control information comprises a resource indicated value; determining a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein the first allocated portion of the first bandwidth part is not more than a second allocated portion of a second bandwidth part when the first bandwidth part is larger than the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; and determining the frequency domain resources allocated by the terminal in the first bandwidth part according to the first frequency domain resource allocation granularity and the resource indication value.
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 of memory 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. The user interface 604 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
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.
Optionally, the computer program, when executed by the processor 601, further implements the following steps:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple;
calculating the ratio of the number of physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first allocated portion of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource allocation granularity;
and according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
Optionally, the computer program, when executed by the processor 601, further implements the following steps:
determining a first frequency domain resource allocation granularity corresponding to a last bandwidth resource in the first allocated number of shares as a second granularity k 12 And the first frequency domain resource allocation granularity corresponding to each remaining bandwidth resource is the first granularity;
wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated portion.
Optionally, the computer program when executed by the processor 601 may further implement the following steps:
and determining each bandwidth resource included in the first bandwidth part and a first frequency domain resource allocation granularity thereof according to a pre-obtained dividing mode of the first bandwidth part, wherein in the dividing mode, a second allocated number of the second bandwidth part is the same as the first allocated number of the first bandwidth part, and the first frequency domain resource allocation granularities corresponding to each bandwidth resource are the same or different or not completely the same.
Optionally, the computer program, when executed by the processor 601, further implements the following steps:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple
Figure GDA0003899942220000201
Wherein the content of the first and second substances,
Figure GDA0003899942220000202
the number of physical resource blocks of the first bandwidth part,
Figure GDA0003899942220000203
the number of physical resource blocks of the second bandwidth part.
The first frequency domain resource allocation granularity for determining the first bandwidth portion comprises two granularities, k respectively 0 k 2 And (k) 0 -1)k 2 Wherein k is 2 Allocating a granularity for a second frequency domain resource of a second bandwidth portion;
according to the following formula,
Figure GDA0003899942220000204
calculating to obtain a first frequency domain resource allocation granularity k 0 k 2 X, and a first frequency domain resource allocation granularity of (k) 0 -1)k 2 Y, of the bandwidth resource.
Here, the first frequency domain resource allocation granularity is k 0 k 2 Is located at the position of the sub-carrier with lower frequency, the first frequency domain resource allocation granularity is (k) 0 -1)k 2 The bandwidth resource of (a) is located at a subcarrier position with higher frequency; alternatively, the first and second electrodes may be,
the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (a) is located at the position of the subcarrier with higher frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Is located at the position of the sub-carrier with lower frequency.
Optionally, the computer program, when executed by the processor 601, further implements the following steps:
calculating to obtain an initial resource position corresponding to the resource indicated value and at least one continuously allocated bandwidth resource;
obtaining the initial position of the frequency domain resource allocated by the terminal in the first bandwidth part according to the initial resource position corresponding to the resource indicated value and the first frequency domain resource allocation granularity, and,
and accumulating the at least one continuously allocated bandwidth resource according to the first frequency domain resource allocation granularity of each bandwidth resource, and calculating to obtain the size of the frequency domain resource allocated by the terminal in the first bandwidth part.
Here, the downlink control information further includes a bandwidth part indicator, and a bandwidth part indicated by the bandwidth part indicator is the first bandwidth part. The downlink control information comprises a frequency domain resource allocation domain, the resource indication value is carried in the frequency domain resource allocation domain, and the frequency domain resource allocation mode is a continuous resource allocation mode.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present invention or a part of the technical solution that substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method for allocating frequency domain resources received discontinuously according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (21)

1. A method for allocating frequency domain resources is applied to network side equipment, and is characterized by comprising the following steps:
determining a first allocated portion of a first bandwidth portion and a first frequency domain resource allocation granularity, wherein when the number of physical resource blocks of the first bandwidth portion is greater than the number of physical resource blocks of a second bandwidth portion, the first allocated portion of the first bandwidth portion is not more than a second allocated portion of the second bandwidth portion, the first bandwidth portion is a target bandwidth portion for terminal handover, and the second bandwidth portion is a currently activated bandwidth portion of the terminal;
calculating to obtain a value of a resource indicated value according to the frequency domain resource allocated by the terminal in the first bandwidth part and the first frequency domain resource allocation granularity;
and sending downlink control information for indicating the terminal to switch the bandwidth part, wherein the downlink control information comprises the resource indication value.
2. The method of claim 1, wherein the step of determining the first allocated portion of the first bandwidth portion and the first frequency-domain resource allocation granularity comprises:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple;
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first distribution part of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource distribution granularity;
and according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
3. The method according to claim 2, wherein the dividing the first bandwidth part into a plurality of contiguous and non-overlapping bandwidth resources according to the first allocated portion, and determining a first frequency-domain resource allocation granularity corresponding to each bandwidth resource comprises:
determining a first frequency domain resource allocation granularity corresponding to a last bandwidth resource in the first allocated number of shares as a second granularity k 12 And, for each remaining bandwidth resourceThe first frequency domain resource allocation granularity is the first granularity;
wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated fraction, k 11 Representing the first granularity.
4. The method of claim 1, wherein the step of determining the first allocated portion of the first bandwidth portion and the first frequency-domain resource allocation granularity comprises:
and dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources according to the first allocation part, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource, wherein the first frequency domain resource allocation granularity corresponding to each bandwidth resource is the same or different or not completely the same.
5. The method according to claim 4, wherein the step of dividing the first bandwidth into a plurality of contiguous and non-overlapping bandwidth resources according to the first allocated number, and determining a first frequency-domain resource allocation granularity corresponding to each bandwidth resource comprises:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple
Figure FDA0003899942210000021
Wherein, the first and the second end of the pipe are connected with each other,
Figure FDA0003899942210000022
the number of physical resource blocks of the first bandwidth part,
Figure FDA0003899942210000023
a number of physical resource blocks being a second bandwidth portion;
the first frequency domain resource allocation granularity for determining the first bandwidth portion comprises two granularities, k respectively 0 k 2 And (k) 0 -1)k 2 Wherein k is 2 Allocating a granularity for a second frequency domain resource of a second bandwidth portion;
according to the following formula, the following formula is adopted,
Figure FDA0003899942210000024
calculating to obtain a first frequency domain resource allocation granularity k 0 k 2 X, and a first frequency domain resource allocation granularity of (k) 0 -1)k 2 Y, of the bandwidth resource.
6. The method of claim 5,
the first frequency domain resource allocation granularity is k 0 k 2 Is located at the position of the sub-carrier with lower frequency, the first frequency domain resource allocation granularity is (k) 0 -1)k 2 The bandwidth resource of (a) is located at a subcarrier position with higher frequency;
or the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (a) is located at the position of the subcarrier with higher frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Is located at a lower frequency sub-carrier position.
7. The method of claim 1, wherein the downlink control information further includes a bandwidth part indicator, and a bandwidth part indicated by the bandwidth part indicator is the first bandwidth part.
8. The method according to any one of claims 1 to 7, wherein the downlink control information includes a frequency domain resource allocation region, the resource indication value is carried in the frequency domain resource allocation region, and the frequency domain resource allocation manner is a continuous resource allocation manner.
9. A method for allocating frequency domain resources is applied to a terminal, and is characterized by comprising the following steps:
receiving downlink control information for indicating the terminal to perform bandwidth part switching, wherein the downlink control information comprises a resource indicated value;
determining a first allocated portion of a first bandwidth portion and a first frequency domain resource allocation granularity, wherein when the number of physical resource blocks of the first bandwidth portion is greater than the number of physical resource blocks of a second bandwidth portion, the first allocated portion of the first bandwidth portion is not more than a second allocated portion of the second bandwidth portion, the first bandwidth portion is a target bandwidth portion for terminal handover, and the second bandwidth portion is a currently activated bandwidth portion of the terminal;
and determining the frequency domain resources allocated by the terminal in the first bandwidth part according to the first frequency domain resource allocation granularity and the resource indication value.
10. The method of claim 9, wherein the step of determining the first allocated portion of the first bandwidth portion and the first frequency-domain resource allocation granularity comprises:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple;
calculating the ratio of the number of physical resource blocks of the first bandwidth part to a first granularity and rounding up to obtain a first allocated portion of the first bandwidth part, wherein the first granularity is the product of the first multiple and a second frequency domain resource allocation granularity;
and according to the first allocation number, dividing the first bandwidth part into a plurality of continuous and non-overlapping bandwidth resources, and determining a first frequency domain resource allocation granularity corresponding to each bandwidth resource.
11. The method of claim 10, wherein the dividing the first bandwidth part into a plurality of contiguous and non-overlapping bandwidth resources according to the first allocated portion, and determining a first granularity of resource allocation of the frequency domain resources corresponding to each bandwidth resource comprises:
determining a first frequency domain resource allocation granularity corresponding to a last bandwidth resource in the first allocated portion as a second granularity k 12 And, the first frequency domain resource allocation granularity corresponding to each remaining bandwidth resource is the first granularity;
wherein the second granularity k 12 Is a first bandwidth portion and (S-1) k 11 S is the first allocated fraction, k 11 Representing the first granularity.
12. The method of claim 9, wherein the step of determining the first allocated portion of the first bandwidth portion and the first frequency-domain resource allocation granularity comprises:
determining each bandwidth resource included in the first bandwidth part and a first frequency domain resource allocation granularity thereof according to a pre-obtained partitioning manner of the first bandwidth part, wherein in the partitioning manner, a second allocation number of the second bandwidth part is the same as the first allocation number of the first bandwidth part, and the first frequency domain resource allocation granularities corresponding to each bandwidth resource are the same or different or not completely the same.
13. The method according to claim 12, wherein the step of dividing the first bandwidth into a plurality of contiguous and non-overlapping bandwidth resources according to the first allocated number, and determining a first frequency-domain resource allocation granularity corresponding to each bandwidth resource comprises:
calculating the ratio of the number of the physical resource blocks of the first bandwidth part to the number of the physical resource blocks of the second bandwidth part and rounding up to obtain a first multiple
Figure FDA0003899942210000041
Wherein, the first and the second end of the pipe are connected with each other,
Figure FDA0003899942210000042
the number of physical resource blocks of the first bandwidth part,
Figure FDA0003899942210000043
a number of physical resource blocks being a second bandwidth portion;
the first granularity of frequency domain resource allocation for determining the first bandwidth part comprises two granularities, respectively k 0 k 2 And (k) 0 -1)k 2 Wherein k is 2 Allocating a granularity for a second frequency domain resource of a second bandwidth portion;
according to the following formula, the following formula is adopted,
Figure FDA0003899942210000044
calculating to obtain a first frequency domain resource allocation granularity k 0 k 2 X, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Y, of the bandwidth resource.
14. The method of claim 12,
the first frequency domain resource allocation granularity is k 0 k 2 Is located at the position of the sub-carrier with lower frequency, the first frequency domain resource allocation granularity is (k) 0 -1)k 2 The bandwidth resource of (a) is located at a subcarrier position with higher frequency; alternatively, the first and second liquid crystal display panels may be,
the first frequency domain resource allocation granularity is k 0 k 2 The bandwidth resource of (c) is located at the position of the subcarrier with higher frequency, and the first frequency domain resource allocation granularity is (k) 0 -1)k 2 Is located at the position of the sub-carrier with lower frequency.
15. The method of claim 9, wherein the downlink control information further includes a bandwidth part indicator, and the bandwidth part indicated by the bandwidth part indicator is the first bandwidth part.
16. The method according to any one of claims 9 to 15, wherein the downlink control information includes a frequency domain resource allocation region, the resource indication value is carried in the frequency domain resource allocation region, and the frequency domain resource allocation manner is a continuous resource allocation manner.
17. The method of claim 16, wherein the step of determining the frequency domain resources allocated by the terminal in the first bandwidth portion according to the first frequency domain resource allocation granularity and the resource indication value comprises:
calculating to obtain an initial resource position corresponding to the resource indicated value and at least one continuously allocated bandwidth resource;
obtaining the initial position of the frequency domain resource allocated by the terminal in the first bandwidth part according to the initial resource position corresponding to the resource indicated value and the first frequency domain resource allocation granularity,
and accumulating the at least one continuously allocated bandwidth resource according to the first frequency domain resource allocation granularity of each bandwidth resource, and calculating to obtain the size of the frequency domain resource allocated by the terminal in the first bandwidth part.
18. A network-side device, comprising:
a processor configured to determine a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein the first allocated portion of the first bandwidth part is not more than a second allocated portion of a second bandwidth part when a number of physical resource blocks of the first bandwidth part is greater than a number of physical resource blocks of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; calculating to obtain a value of a resource indicated value according to the frequency domain resource allocated by the terminal in the first bandwidth part and the first frequency domain resource allocation granularity;
a transceiver, configured to send downlink control information indicating that the terminal performs bandwidth part switching, where the downlink control information includes the resource indication value.
19. A terminal, comprising:
a transceiver, configured to receive downlink control information for instructing the terminal to perform bandwidth partial handover, where the downlink control information includes a resource indication value;
a processor configured to determine a first allocated portion of a first bandwidth part and a first frequency domain resource allocation granularity, wherein the first allocated portion of the first bandwidth part is not more than a second allocated portion of a second bandwidth part when a number of physical resource blocks of the first bandwidth part is greater than a number of physical resource blocks of the second bandwidth part, the first bandwidth part is a target bandwidth part for terminal handover, and the second bandwidth part is a currently activated bandwidth part of the terminal; and determining the frequency domain resources allocated by the terminal in the first bandwidth part according to the first frequency domain resource allocation granularity and the resource indication value.
20. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method of allocation of frequency domain resources according to any of claims 1 to 17.
21. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the method of allocation of frequency domain resources of any one of claims 1 to 17.
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